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gecko-dev/dom/base/nsDocument.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* Base class for all our document implementations.
*/
#include "nsDocument.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/BinarySearch.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/Likely.h"
#include <algorithm>
#include "prlog.h"
#include "plstr.h"
#include "prprf.h"
#include "mozilla/Telemetry.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsILoadContext.h"
#include "nsUnicharUtils.h"
#include "nsContentList.h"
#include "nsIObserver.h"
#include "nsIBaseWindow.h"
#include "mozilla/css/Loader.h"
#include "mozilla/css/ImageLoader.h"
#include "nsDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsCOMArray.h"
#include "nsDOMClassInfo.h"
#include "mozilla/Services.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/BasicEvents.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/EventStateManager.h"
#include "nsIDOMNodeFilter.h"
#include "nsIDOMStyleSheet.h"
#include "mozilla/dom/Attr.h"
#include "nsIDOMDOMImplementation.h"
#include "nsIDOMDocumentXBL.h"
#include "mozilla/dom/Element.h"
#include "nsGenericHTMLElement.h"
#include "mozilla/dom/CDATASection.h"
#include "mozilla/dom/ProcessingInstruction.h"
#include "nsDOMString.h"
#include "nsNodeUtils.h"
#include "nsLayoutUtils.h" // for GetFrameForPoint
#include "nsIFrame.h"
#include "nsITabChild.h"
#include "nsRange.h"
#include "nsIDOMText.h"
#include "nsIDOMComment.h"
#include "mozilla/dom/DocumentType.h"
#include "mozilla/dom/NodeIterator.h"
#include "mozilla/dom/TreeWalker.h"
#include "nsIServiceManager.h"
#include "nsIServiceWorkerManager.h"
#include "nsCanvasFrame.h"
#include "nsContentCID.h"
#include "nsError.h"
#include "nsPresShell.h"
#include "nsPresContext.h"
#include "nsIJSON.h"
#include "nsThreadUtils.h"
#include "nsNodeInfoManager.h"
#include "nsIFileChannel.h"
#include "nsIMultiPartChannel.h"
#include "nsIRefreshURI.h"
#include "nsIWebNavigation.h"
#include "nsIScriptError.h"
#include "nsStyleSheetService.h"
#include "nsNetUtil.h" // for NS_MakeAbsoluteURI
#include "nsIScriptSecurityManager.h"
#include "nsIPrincipal.h"
#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMElement.h"
#include "nsFocusManager.h"
// for radio group stuff
#include "nsIDOMHTMLInputElement.h"
#include "nsIRadioVisitor.h"
#include "nsIFormControl.h"
#include "nsBidiUtils.h"
#include "nsIParserService.h"
#include "nsContentCreatorFunctions.h"
#include "nsIScriptContext.h"
#include "nsBindingManager.h"
#include "nsIDOMHTMLDocument.h"
#include "nsHTMLDocument.h"
#include "nsIDOMHTMLFormElement.h"
#include "nsIRequest.h"
#include "nsHostObjectProtocolHandler.h"
#include "nsCharsetSource.h"
#include "nsIParser.h"
#include "nsIContentSink.h"
#include "nsDateTimeFormatCID.h"
#include "nsIDateTimeFormat.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStates.h"
#include "mozilla/InternalMutationEvent.h"
#include "nsDOMCID.h"
#include "jsapi.h"
#include "nsIXPConnect.h"
#include "nsCCUncollectableMarker.h"
#include "nsIContentPolicy.h"
#include "nsContentPolicyUtils.h"
#include "nsICategoryManager.h"
#include "nsIDocumentLoaderFactory.h"
#include "nsIDocumentLoader.h"
#include "nsIContentViewer.h"
#include "nsIXMLContentSink.h"
#include "nsIXULDocument.h"
#include "nsIPrompt.h"
#include "nsIPropertyBag2.h"
#include "mozilla/dom/PageTransitionEvent.h"
#include "mozilla/dom/StyleRuleChangeEvent.h"
#include "mozilla/dom/StyleSheetChangeEvent.h"
#include "mozilla/dom/StyleSheetApplicableStateChangeEvent.h"
#include "nsJSUtils.h"
#include "nsFrameLoader.h"
#include "nsEscape.h"
#include "nsObjectLoadingContent.h"
#include "nsHtml5TreeOpExecutor.h"
#include "mozilla/dom/HTMLLinkElement.h"
#include "mozilla/dom/HTMLMediaElement.h"
#include "mozAutoDocUpdate.h"
#include "nsGlobalWindow.h"
#include "mozilla/dom/EncodingUtils.h"
#include "nsDOMNavigationTiming.h"
#include "nsSMILAnimationController.h"
#include "imgIContainer.h"
#include "nsSVGUtils.h"
#include "SVGElementFactory.h"
#include "nsRefreshDriver.h"
// FOR CSP (autogenerated by xpidl)
#include "nsIContentSecurityPolicy.h"
#include "mozilla/dom/nsCSPService.h"
#include "nsHTMLStyleSheet.h"
#include "nsHTMLCSSStyleSheet.h"
#include "SVGAttrAnimationRuleProcessor.h"
#include "mozilla/dom/DOMImplementation.h"
#include "mozilla/dom/ShadowRoot.h"
#include "mozilla/dom/Comment.h"
#include "nsTextNode.h"
#include "mozilla/dom/Link.h"
#include "mozilla/dom/HTMLElementBinding.h"
#include "mozilla/dom/SVGElementBinding.h"
#include "nsXULAppAPI.h"
#include "mozilla/dom/Touch.h"
#include "mozilla/dom/TouchEvent.h"
#include "mozilla/Preferences.h"
#include "imgILoader.h"
#include "imgRequestProxy.h"
#include "nsWrapperCacheInlines.h"
#include "nsSandboxFlags.h"
#include "nsIAppsService.h"
#include "mozilla/dom/AnonymousContent.h"
#include "mozilla/dom/AnimationTimeline.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DocumentFragment.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/HTMLBodyElement.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/MediaQueryList.h"
#include "mozilla/dom/NodeFilterBinding.h"
#include "mozilla/dom/OwningNonNull.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/dom/UndoManager.h"
#include "mozilla/dom/WebComponentsBinding.h"
#include "nsFrame.h"
#include "nsDOMCaretPosition.h"
#include "nsIDOMHTMLTextAreaElement.h"
#include "nsViewportInfo.h"
#include "nsIContentPermissionPrompt.h"
#include "mozilla/StaticPtr.h"
#include "nsITextControlElement.h"
#include "nsIDOMNSEditableElement.h"
#include "nsIEditor.h"
#include "nsIDOMCSSStyleRule.h"
#include "mozilla/css/Rule.h"
#include "nsIDOMLocation.h"
#include "nsIHttpChannelInternal.h"
#include "nsISecurityConsoleMessage.h"
#include "nsCharSeparatedTokenizer.h"
#include "mozilla/dom/XPathEvaluator.h"
#include "mozilla/dom/XPathNSResolverBinding.h"
#include "mozilla/dom/XPathResult.h"
#include "nsIDocumentEncoder.h"
#include "nsIDocumentActivity.h"
#include "nsIStructuredCloneContainer.h"
#include "nsIMutableArray.h"
#include "nsContentPermissionHelper.h"
#include "mozilla/dom/DOMStringList.h"
#include "nsWindowMemoryReporter.h"
#include "nsLocation.h"
#include "mozilla/dom/FontFaceSet.h"
#include "mozilla/dom/BoxObject.h"
#ifdef MOZ_MEDIA_NAVIGATOR
#include "mozilla/MediaManager.h"
#endif // MOZ_MEDIA_NAVIGATOR
#ifdef MOZ_WEBRTC
#include "IPeerConnection.h"
#endif // MOZ_WEBRTC
using namespace mozilla;
using namespace mozilla::dom;
typedef nsTArray<Link*> LinkArray;
#ifdef PR_LOGGING
static PRLogModuleInfo* gDocumentLeakPRLog;
static PRLogModuleInfo* gCspPRLog;
#endif
#define NAME_NOT_VALID ((nsSimpleContentList*)1)
nsIdentifierMapEntry::~nsIdentifierMapEntry()
{
}
void
nsIdentifierMapEntry::Traverse(nsCycleCollectionTraversalCallback* aCallback)
{
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*aCallback,
"mIdentifierMap mNameContentList");
aCallback->NoteXPCOMChild(static_cast<nsIDOMNodeList*>(mNameContentList));
if (mImageElement) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*aCallback,
"mIdentifierMap mImageElement element");
nsIContent* imageElement = mImageElement;
aCallback->NoteXPCOMChild(imageElement);
}
}
bool
nsIdentifierMapEntry::IsEmpty()
{
return mIdContentList.Count() == 0 && !mNameContentList &&
!mChangeCallbacks && !mImageElement;
}
Element*
nsIdentifierMapEntry::GetIdElement()
{
return static_cast<Element*>(mIdContentList.SafeElementAt(0));
}
Element*
nsIdentifierMapEntry::GetImageIdElement()
{
return mImageElement ? mImageElement.get() : GetIdElement();
}
void
nsIdentifierMapEntry::AppendAllIdContent(nsCOMArray<nsIContent>* aElements)
{
for (int32_t i = 0; i < mIdContentList.Count(); ++i) {
aElements->AppendObject(static_cast<Element*>(mIdContentList[i]));
}
}
void
nsIdentifierMapEntry::AddContentChangeCallback(nsIDocument::IDTargetObserver aCallback,
void* aData, bool aForImage)
{
if (!mChangeCallbacks) {
mChangeCallbacks = new nsTHashtable<ChangeCallbackEntry>;
if (!mChangeCallbacks)
return;
}
ChangeCallback cc = { aCallback, aData, aForImage };
mChangeCallbacks->PutEntry(cc);
}
void
nsIdentifierMapEntry::RemoveContentChangeCallback(nsIDocument::IDTargetObserver aCallback,
void* aData, bool aForImage)
{
if (!mChangeCallbacks)
return;
ChangeCallback cc = { aCallback, aData, aForImage };
mChangeCallbacks->RemoveEntry(cc);
if (mChangeCallbacks->Count() == 0) {
mChangeCallbacks = nullptr;
}
}
struct FireChangeArgs {
Element* mFrom;
Element* mTo;
bool mImageOnly;
bool mHaveImageOverride;
};
// XXX Workaround for bug 980560 to maintain the existing broken semantics
template<>
struct nsIStyleRule::COMTypeInfo<css::Rule, void> {
static const nsIID kIID;
};
const nsIID nsIStyleRule::COMTypeInfo<css::Rule, void>::kIID = NS_ISTYLE_RULE_IID;
namespace mozilla {
namespace dom {
static PLDHashOperator
CustomDefinitionsTraverse(CustomElementHashKey* aKey,
CustomElementDefinition* aDefinition,
void* aArg)
{
nsCycleCollectionTraversalCallback* cb =
static_cast<nsCycleCollectionTraversalCallback*>(aArg);
nsAutoPtr<LifecycleCallbacks>& callbacks = aDefinition->mCallbacks;
if (callbacks->mAttributeChangedCallback.WasPassed()) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mCustomDefinitions->mCallbacks->mAttributeChangedCallback");
cb->NoteXPCOMChild(aDefinition->mCallbacks->mAttributeChangedCallback.Value());
}
if (callbacks->mCreatedCallback.WasPassed()) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mCustomDefinitions->mCallbacks->mCreatedCallback");
cb->NoteXPCOMChild(aDefinition->mCallbacks->mCreatedCallback.Value());
}
if (callbacks->mAttachedCallback.WasPassed()) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mCustomDefinitions->mCallbacks->mAttachedCallback");
cb->NoteXPCOMChild(aDefinition->mCallbacks->mAttachedCallback.Value());
}
if (callbacks->mDetachedCallback.WasPassed()) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mCustomDefinitions->mCallbacks->mDetachedCallback");
cb->NoteXPCOMChild(aDefinition->mCallbacks->mDetachedCallback.Value());
}
return PL_DHASH_NEXT;
}
static PLDHashOperator
CandidatesTraverse(CustomElementHashKey* aKey,
nsTArray<nsRefPtr<Element>>* aData,
void* aArg)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(aArg);
for (size_t i = 0; i < aData->Length(); ++i) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, "mCandidatesMap->Element");
cb->NoteXPCOMChild(aData->ElementAt(i));
}
return PL_DHASH_NEXT;
}
struct CustomDefinitionTraceArgs
{
const TraceCallbacks& callbacks;
void* closure;
};
static PLDHashOperator
CustomDefinitionTrace(CustomElementHashKey *aKey,
CustomElementDefinition *aData,
void *aArg)
{
CustomDefinitionTraceArgs* traceArgs = static_cast<CustomDefinitionTraceArgs*>(aArg);
MOZ_ASSERT(aData, "Definition must not be null");
traceArgs->callbacks.Trace(&aData->mPrototype, "mCustomDefinitions prototype",
traceArgs->closure);
return PL_DHASH_NEXT;
}
NS_IMPL_CYCLE_COLLECTION_CLASS(Registry)
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(Registry)
CustomDefinitionTraceArgs customDefinitionArgs = { aCallbacks, aClosure };
tmp->mCustomDefinitions.EnumerateRead(CustomDefinitionTrace,
&customDefinitionArgs);
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Registry)
tmp->mCustomDefinitions.EnumerateRead(CustomDefinitionsTraverse, &cb);
tmp->mCandidatesMap.EnumerateRead(CandidatesTraverse, &cb);
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Registry)
tmp->mCustomDefinitions.Clear();
tmp->mCandidatesMap.Clear();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Registry)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(Registry)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Registry)
Registry::Registry()
{
mozilla::HoldJSObjects(this);
}
Registry::~Registry()
{
mozilla::DropJSObjects(this);
}
void
CustomElementCallback::Call()
{
ErrorResult rv;
switch (mType) {
case nsIDocument::eCreated:
{
// For the duration of this callback invocation, the element is being created
// flag must be set to true.
mOwnerData->mElementIsBeingCreated = true;
// The callback hasn't actually been invoked yet, but we need to flip
// this now in order to enqueue the attached callback. This is a spec
// bug (w3c bug 27437).
mOwnerData->mCreatedCallbackInvoked = true;
// If ELEMENT is in a document and this document has a browsing context,
// enqueue attached callback for ELEMENT.
nsIDocument* document = mThisObject->GetUncomposedDoc();
if (document && document->GetDocShell()) {
document->EnqueueLifecycleCallback(nsIDocument::eAttached, mThisObject);
}
static_cast<LifecycleCreatedCallback *>(mCallback.get())->Call(mThisObject, rv);
mOwnerData->mElementIsBeingCreated = false;
break;
}
case nsIDocument::eAttached:
static_cast<LifecycleAttachedCallback *>(mCallback.get())->Call(mThisObject, rv);
break;
case nsIDocument::eDetached:
static_cast<LifecycleDetachedCallback *>(mCallback.get())->Call(mThisObject, rv);
break;
case nsIDocument::eAttributeChanged:
static_cast<LifecycleAttributeChangedCallback *>(mCallback.get())->Call(mThisObject,
mArgs.name, mArgs.oldValue, mArgs.newValue, rv);
break;
}
}
void
CustomElementCallback::Traverse(nsCycleCollectionTraversalCallback& aCb) const
{
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCb, "mThisObject");
aCb.NoteXPCOMChild(mThisObject);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCb, "mCallback");
aCb.NoteXPCOMChild(mCallback);
}
CustomElementCallback::CustomElementCallback(Element* aThisObject,
nsIDocument::ElementCallbackType aCallbackType,
mozilla::dom::CallbackFunction* aCallback,
CustomElementData* aOwnerData)
: mThisObject(aThisObject),
mCallback(aCallback),
mType(aCallbackType),
mOwnerData(aOwnerData)
{
}
CustomElementDefinition::CustomElementDefinition(JSObject* aPrototype,
nsIAtom* aType,
nsIAtom* aLocalName,
LifecycleCallbacks* aCallbacks,
uint32_t aNamespaceID,
uint32_t aDocOrder)
: mPrototype(aPrototype),
mType(aType),
mLocalName(aLocalName),
mCallbacks(aCallbacks),
mNamespaceID(aNamespaceID),
mDocOrder(aDocOrder)
{
}
CustomElementData::CustomElementData(nsIAtom* aType)
: mType(aType),
mCurrentCallback(-1),
mElementIsBeingCreated(false),
mCreatedCallbackInvoked(true),
mAssociatedMicroTask(-1)
{
}
void
CustomElementData::RunCallbackQueue()
{
// Note: It's possible to re-enter this method.
while (static_cast<uint32_t>(++mCurrentCallback) < mCallbackQueue.Length()) {
mCallbackQueue[mCurrentCallback]->Call();
}
mCallbackQueue.Clear();
mCurrentCallback = -1;
}
} // namespace dom
} // namespace mozilla
static PLDHashOperator
FireChangeEnumerator(nsIdentifierMapEntry::ChangeCallbackEntry *aEntry, void *aArg)
{
FireChangeArgs* args = static_cast<FireChangeArgs*>(aArg);
// Don't fire image changes for non-image observers, and don't fire element
// changes for image observers when an image override is active.
if (aEntry->mKey.mForImage ? (args->mHaveImageOverride && !args->mImageOnly) :
args->mImageOnly)
return PL_DHASH_NEXT;
return aEntry->mKey.mCallback(args->mFrom, args->mTo, aEntry->mKey.mData)
? PL_DHASH_NEXT : PL_DHASH_REMOVE;
}
void
nsIdentifierMapEntry::FireChangeCallbacks(Element* aOldElement,
Element* aNewElement,
bool aImageOnly)
{
if (!mChangeCallbacks)
return;
FireChangeArgs args = { aOldElement, aNewElement, aImageOnly, !!mImageElement };
mChangeCallbacks->EnumerateEntries(FireChangeEnumerator, &args);
}
namespace {
struct PositionComparator
{
Element* const mElement;
explicit PositionComparator(Element* const aElement) : mElement(aElement) {}
int operator()(void* aElement) const {
Element* curElement = static_cast<Element*>(aElement);
if (mElement == curElement) {
return 0;
}
if (nsContentUtils::PositionIsBefore(mElement, curElement)) {
return -1;
}
return 1;
}
};
} // namespace
bool
nsIdentifierMapEntry::AddIdElement(Element* aElement)
{
NS_PRECONDITION(aElement, "Must have element");
NS_PRECONDITION(mIdContentList.IndexOf(nullptr) < 0,
"Why is null in our list?");
#ifdef DEBUG
Element* currentElement =
static_cast<Element*>(mIdContentList.SafeElementAt(0));
#endif
// Common case
if (mIdContentList.Count() == 0) {
if (!mIdContentList.AppendElement(aElement))
return false;
NS_ASSERTION(currentElement == nullptr, "How did that happen?");
FireChangeCallbacks(nullptr, aElement);
return true;
}
// We seem to have multiple content nodes for the same id, or XUL is messing
// with us. Search for the right place to insert the content.
size_t idx;
if (BinarySearchIf(mIdContentList, 0, mIdContentList.Count(),
PositionComparator(aElement), &idx)) {
// Already in the list, so already in the right spot. Get out of here.
// XXXbz this only happens because XUL does all sorts of random
// UpdateIdTableEntry calls. Hate, hate, hate!
return true;
}
if (!mIdContentList.InsertElementAt(aElement, idx))
return false;
if (idx == 0) {
Element* oldElement =
static_cast<Element*>(mIdContentList.SafeElementAt(1));
NS_ASSERTION(currentElement == oldElement, "How did that happen?");
FireChangeCallbacks(oldElement, aElement);
}
return true;
}
void
nsIdentifierMapEntry::RemoveIdElement(Element* aElement)
{
NS_PRECONDITION(aElement, "Missing element");
// This should only be called while the document is in an update.
// Assertions near the call to this method guarantee this.
// This could fire in OOM situations
// Only assert this in HTML documents for now as XUL does all sorts of weird
// crap.
NS_ASSERTION(!aElement->OwnerDoc()->IsHTML() ||
mIdContentList.IndexOf(aElement) >= 0,
"Removing id entry that doesn't exist");
// XXXbz should this ever Compact() I guess when all the content is gone
// we'll just get cleaned up in the natural order of things...
Element* currentElement =
static_cast<Element*>(mIdContentList.SafeElementAt(0));
mIdContentList.RemoveElement(aElement);
if (currentElement == aElement) {
FireChangeCallbacks(currentElement,
static_cast<Element*>(mIdContentList.SafeElementAt(0)));
}
}
void
nsIdentifierMapEntry::SetImageElement(Element* aElement)
{
Element* oldElement = GetImageIdElement();
mImageElement = aElement;
Element* newElement = GetImageIdElement();
if (oldElement != newElement) {
FireChangeCallbacks(oldElement, newElement, true);
}
}
void
nsIdentifierMapEntry::AddNameElement(nsINode* aNode, Element* aElement)
{
if (!mNameContentList) {
mNameContentList = new nsSimpleContentList(aNode);
}
mNameContentList->AppendElement(aElement);
}
void
nsIdentifierMapEntry::RemoveNameElement(Element* aElement)
{
if (mNameContentList) {
mNameContentList->RemoveElement(aElement);
}
}
bool
nsIdentifierMapEntry::HasIdElementExposedAsHTMLDocumentProperty()
{
Element* idElement = GetIdElement();
return idElement &&
nsGenericHTMLElement::ShouldExposeIdAsHTMLDocumentProperty(idElement);
}
size_t
nsIdentifierMapEntry::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
{
return nsStringHashKey::SizeOfExcludingThis(aMallocSizeOf);
}
// Helper structs for the content->subdoc map
class SubDocMapEntry : public PLDHashEntryHdr
{
public:
// Both of these are strong references
Element *mKey; // must be first, to look like PLDHashEntryStub
nsIDocument *mSubDocument;
};
struct FindContentData
{
explicit FindContentData(nsIDocument* aSubDoc)
: mSubDocument(aSubDoc), mResult(nullptr)
{
}
nsISupports *mSubDocument;
Element *mResult;
};
/**
* A struct that holds all the information about a radio group.
*/
struct nsRadioGroupStruct
{
nsRadioGroupStruct()
: mRequiredRadioCount(0)
, mGroupSuffersFromValueMissing(false)
{}
/**
* A strong pointer to the currently selected radio button.
*/
nsRefPtr<HTMLInputElement> mSelectedRadioButton;
nsCOMArray<nsIFormControl> mRadioButtons;
uint32_t mRequiredRadioCount;
bool mGroupSuffersFromValueMissing;
};
nsDOMStyleSheetList::nsDOMStyleSheetList(nsIDocument *aDocument)
{
mLength = -1;
// Not reference counted to avoid circular references.
// The document will tell us when its going away.
mDocument = aDocument;
mDocument->AddObserver(this);
}
nsDOMStyleSheetList::~nsDOMStyleSheetList()
{
if (mDocument) {
mDocument->RemoveObserver(this);
}
}
NS_IMPL_ISUPPORTS_INHERITED(nsDOMStyleSheetList, StyleSheetList,
nsIDocumentObserver,
nsIMutationObserver)
uint32_t
nsDOMStyleSheetList::Length()
{
if (!mDocument) {
return 0;
}
// XXX Find the number and then cache it. We'll use the
// observer notification to figure out if new ones have
// been added or removed.
if (-1 == mLength) {
mLength = mDocument->GetNumberOfStyleSheets();
#ifdef DEBUG
int32_t i;
for (i = 0; i < mLength; i++) {
nsIStyleSheet *sheet = mDocument->GetStyleSheetAt(i);
nsCOMPtr<nsIDOMStyleSheet> domss(do_QueryInterface(sheet));
NS_ASSERTION(domss, "All \"normal\" sheets implement nsIDOMStyleSheet");
}
#endif
}
return mLength;
}
CSSStyleSheet*
nsDOMStyleSheetList::IndexedGetter(uint32_t aIndex, bool& aFound)
{
if (!mDocument || aIndex >= (uint32_t)mDocument->GetNumberOfStyleSheets()) {
aFound = false;
return nullptr;
}
aFound = true;
nsIStyleSheet *sheet = mDocument->GetStyleSheetAt(aIndex);
NS_ASSERTION(sheet, "Must have a sheet");
return static_cast<CSSStyleSheet*>(sheet);
}
void
nsDOMStyleSheetList::NodeWillBeDestroyed(const nsINode *aNode)
{
mDocument = nullptr;
}
void
nsDOMStyleSheetList::StyleSheetAdded(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
bool aDocumentSheet)
{
if (aDocumentSheet && -1 != mLength) {
nsCOMPtr<nsIDOMStyleSheet> domss(do_QueryInterface(aStyleSheet));
if (domss) {
mLength++;
}
}
}
void
nsDOMStyleSheetList::StyleSheetRemoved(nsIDocument *aDocument,
nsIStyleSheet* aStyleSheet,
bool aDocumentSheet)
{
if (aDocumentSheet && -1 != mLength) {
nsCOMPtr<nsIDOMStyleSheet> domss(do_QueryInterface(aStyleSheet));
if (domss) {
mLength--;
}
}
}
// nsOnloadBlocker implementation
NS_IMPL_ISUPPORTS(nsOnloadBlocker, nsIRequest)
NS_IMETHODIMP
nsOnloadBlocker::GetName(nsACString &aResult)
{
aResult.AssignLiteral("about:document-onload-blocker");
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::IsPending(bool *_retval)
{
*_retval = true;
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::GetStatus(nsresult *status)
{
*status = NS_OK;
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::Cancel(nsresult status)
{
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::Suspend(void)
{
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::Resume(void)
{
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::GetLoadGroup(nsILoadGroup * *aLoadGroup)
{
*aLoadGroup = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::SetLoadGroup(nsILoadGroup * aLoadGroup)
{
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::GetLoadFlags(nsLoadFlags *aLoadFlags)
{
*aLoadFlags = nsIRequest::LOAD_NORMAL;
return NS_OK;
}
NS_IMETHODIMP
nsOnloadBlocker::SetLoadFlags(nsLoadFlags aLoadFlags)
{
return NS_OK;
}
// ==================================================================
nsExternalResourceMap::nsExternalResourceMap()
: mHaveShutDown(false)
{
}
nsIDocument*
nsExternalResourceMap::RequestResource(nsIURI* aURI,
nsINode* aRequestingNode,
nsDocument* aDisplayDocument,
ExternalResourceLoad** aPendingLoad)
{
// If we ever start allowing non-same-origin loads here, we might need to do
// something interesting with aRequestingPrincipal even for the hashtable
// gets.
NS_PRECONDITION(aURI, "Must have a URI");
NS_PRECONDITION(aRequestingNode, "Must have a node");
*aPendingLoad = nullptr;
if (mHaveShutDown) {
return nullptr;
}
// First, make sure we strip the ref from aURI.
nsCOMPtr<nsIURI> clone;
nsresult rv = aURI->CloneIgnoringRef(getter_AddRefs(clone));
if (NS_FAILED(rv) || !clone) {
return nullptr;
}
ExternalResource* resource;
mMap.Get(clone, &resource);
if (resource) {
return resource->mDocument;
}
nsRefPtr<PendingLoad> load;
mPendingLoads.Get(clone, getter_AddRefs(load));
if (load) {
load.forget(aPendingLoad);
return nullptr;
}
load = new PendingLoad(aDisplayDocument);
mPendingLoads.Put(clone, load);
if (NS_FAILED(load->StartLoad(clone, aRequestingNode))) {
// Make sure we don't thrash things by trying this load again, since
// chances are it failed for good reasons (security check, etc).
AddExternalResource(clone, nullptr, nullptr, aDisplayDocument);
} else {
load.forget(aPendingLoad);
}
return nullptr;
}
struct
nsExternalResourceEnumArgs
{
nsIDocument::nsSubDocEnumFunc callback;
void *data;
};
static PLDHashOperator
ExternalResourceEnumerator(nsIURI* aKey,
nsExternalResourceMap::ExternalResource* aData,
void* aClosure)
{
nsExternalResourceEnumArgs* args =
static_cast<nsExternalResourceEnumArgs*>(aClosure);
bool next =
aData->mDocument ? args->callback(aData->mDocument, args->data) : true;
return next ? PL_DHASH_NEXT : PL_DHASH_STOP;
}
void
nsExternalResourceMap::EnumerateResources(nsIDocument::nsSubDocEnumFunc aCallback,
void* aData)
{
nsExternalResourceEnumArgs args = { aCallback, aData };
mMap.EnumerateRead(ExternalResourceEnumerator, &args);
}
static PLDHashOperator
ExternalResourceTraverser(nsIURI* aKey,
nsExternalResourceMap::ExternalResource* aData,
void* aClosure)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mExternalResourceMap.mMap entry"
"->mDocument");
cb->NoteXPCOMChild(aData->mDocument);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mExternalResourceMap.mMap entry"
"->mViewer");
cb->NoteXPCOMChild(aData->mViewer);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mExternalResourceMap.mMap entry"
"->mLoadGroup");
cb->NoteXPCOMChild(aData->mLoadGroup);
return PL_DHASH_NEXT;
}
void
nsExternalResourceMap::Traverse(nsCycleCollectionTraversalCallback* aCallback) const
{
// mPendingLoads will get cleared out as the requests complete, so
// no need to worry about those here.
mMap.EnumerateRead(ExternalResourceTraverser, aCallback);
}
static PLDHashOperator
ExternalResourceHider(nsIURI* aKey,
nsExternalResourceMap::ExternalResource* aData,
void* aClosure)
{
if (aData->mViewer) {
aData->mViewer->Hide();
}
return PL_DHASH_NEXT;
}
void
nsExternalResourceMap::HideViewers()
{
mMap.EnumerateRead(ExternalResourceHider, nullptr);
}
static PLDHashOperator
ExternalResourceShower(nsIURI* aKey,
nsExternalResourceMap::ExternalResource* aData,
void* aClosure)
{
if (aData->mViewer) {
aData->mViewer->Show();
}
return PL_DHASH_NEXT;
}
void
nsExternalResourceMap::ShowViewers()
{
mMap.EnumerateRead(ExternalResourceShower, nullptr);
}
void
TransferZoomLevels(nsIDocument* aFromDoc,
nsIDocument* aToDoc)
{
NS_ABORT_IF_FALSE(aFromDoc && aToDoc,
"transferring zoom levels from/to null doc");
nsIPresShell* fromShell = aFromDoc->GetShell();
if (!fromShell)
return;
nsPresContext* fromCtxt = fromShell->GetPresContext();
if (!fromCtxt)
return;
nsIPresShell* toShell = aToDoc->GetShell();
if (!toShell)
return;
nsPresContext* toCtxt = toShell->GetPresContext();
if (!toCtxt)
return;
toCtxt->SetFullZoom(fromCtxt->GetFullZoom());
toCtxt->SetBaseMinFontSize(fromCtxt->BaseMinFontSize());
toCtxt->SetTextZoom(fromCtxt->TextZoom());
}
void
TransferShowingState(nsIDocument* aFromDoc, nsIDocument* aToDoc)
{
NS_ABORT_IF_FALSE(aFromDoc && aToDoc,
"transferring showing state from/to null doc");
if (aFromDoc->IsShowing()) {
aToDoc->OnPageShow(true, nullptr);
}
}
nsresult
nsExternalResourceMap::AddExternalResource(nsIURI* aURI,
nsIContentViewer* aViewer,
nsILoadGroup* aLoadGroup,
nsIDocument* aDisplayDocument)
{
NS_PRECONDITION(aURI, "Unexpected call");
NS_PRECONDITION((aViewer && aLoadGroup) || (!aViewer && !aLoadGroup),
"Must have both or neither");
nsRefPtr<PendingLoad> load;
mPendingLoads.Get(aURI, getter_AddRefs(load));
mPendingLoads.Remove(aURI);
nsresult rv = NS_OK;
nsCOMPtr<nsIDocument> doc;
if (aViewer) {
doc = aViewer->GetDocument();
NS_ASSERTION(doc, "Must have a document");
nsCOMPtr<nsIXULDocument> xulDoc = do_QueryInterface(doc);
if (xulDoc) {
// We don't handle XUL stuff here yet.
rv = NS_ERROR_NOT_AVAILABLE;
} else {
doc->SetDisplayDocument(aDisplayDocument);
// Make sure that hiding our viewer will tear down its presentation.
aViewer->SetSticky(false);
rv = aViewer->Init(nullptr, nsIntRect(0, 0, 0, 0));
if (NS_SUCCEEDED(rv)) {
rv = aViewer->Open(nullptr, nullptr);
}
}
if (NS_FAILED(rv)) {
doc = nullptr;
aViewer = nullptr;
aLoadGroup = nullptr;
}
}
ExternalResource* newResource = new ExternalResource();
mMap.Put(aURI, newResource);
newResource->mDocument = doc;
newResource->mViewer = aViewer;
newResource->mLoadGroup = aLoadGroup;
if (doc) {
TransferZoomLevels(aDisplayDocument, doc);
TransferShowingState(aDisplayDocument, doc);
}
const nsTArray< nsCOMPtr<nsIObserver> > & obs = load->Observers();
for (uint32_t i = 0; i < obs.Length(); ++i) {
obs[i]->Observe(doc, "external-resource-document-created", nullptr);
}
return rv;
}
NS_IMPL_ISUPPORTS(nsExternalResourceMap::PendingLoad,
nsIStreamListener,
nsIRequestObserver)
NS_IMETHODIMP
nsExternalResourceMap::PendingLoad::OnStartRequest(nsIRequest *aRequest,
nsISupports *aContext)
{
nsExternalResourceMap& map = mDisplayDocument->ExternalResourceMap();
if (map.HaveShutDown()) {
return NS_BINDING_ABORTED;
}
nsCOMPtr<nsIContentViewer> viewer;
nsCOMPtr<nsILoadGroup> loadGroup;
nsresult rv = SetupViewer(aRequest, getter_AddRefs(viewer),
getter_AddRefs(loadGroup));
// Make sure to do this no matter what
nsresult rv2 = map.AddExternalResource(mURI, viewer, loadGroup,
mDisplayDocument);
if (NS_FAILED(rv)) {
return rv;
}
if (NS_FAILED(rv2)) {
mTargetListener = nullptr;
return rv2;
}
return mTargetListener->OnStartRequest(aRequest, aContext);
}
nsresult
nsExternalResourceMap::PendingLoad::SetupViewer(nsIRequest* aRequest,
nsIContentViewer** aViewer,
nsILoadGroup** aLoadGroup)
{
NS_PRECONDITION(!mTargetListener, "Unexpected call to OnStartRequest");
*aViewer = nullptr;
*aLoadGroup = nullptr;
nsCOMPtr<nsIChannel> chan(do_QueryInterface(aRequest));
NS_ENSURE_TRUE(chan, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aRequest));
if (httpChannel) {
bool requestSucceeded;
if (NS_FAILED(httpChannel->GetRequestSucceeded(&requestSucceeded)) ||
!requestSucceeded) {
// Bail out on this load, since it looks like we have an HTTP error page
return NS_BINDING_ABORTED;
}
}
nsAutoCString type;
chan->GetContentType(type);
nsCOMPtr<nsILoadGroup> loadGroup;
chan->GetLoadGroup(getter_AddRefs(loadGroup));
// Give this document its own loadgroup
nsCOMPtr<nsILoadGroup> newLoadGroup =
do_CreateInstance(NS_LOADGROUP_CONTRACTID);
NS_ENSURE_TRUE(newLoadGroup, NS_ERROR_OUT_OF_MEMORY);
newLoadGroup->SetLoadGroup(loadGroup);
nsCOMPtr<nsIInterfaceRequestor> callbacks;
loadGroup->GetNotificationCallbacks(getter_AddRefs(callbacks));
nsCOMPtr<nsIInterfaceRequestor> newCallbacks =
new LoadgroupCallbacks(callbacks);
newLoadGroup->SetNotificationCallbacks(newCallbacks);
// This is some serious hackery cribbed from docshell
nsCOMPtr<nsICategoryManager> catMan =
do_GetService(NS_CATEGORYMANAGER_CONTRACTID);
NS_ENSURE_TRUE(catMan, NS_ERROR_NOT_AVAILABLE);
nsXPIDLCString contractId;
nsresult rv = catMan->GetCategoryEntry("Gecko-Content-Viewers", type.get(),
getter_Copies(contractId));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory =
do_GetService(contractId);
NS_ENSURE_TRUE(docLoaderFactory, NS_ERROR_NOT_AVAILABLE);
nsCOMPtr<nsIContentViewer> viewer;
nsCOMPtr<nsIStreamListener> listener;
rv = docLoaderFactory->CreateInstance("external-resource", chan, newLoadGroup,
type.get(), nullptr, nullptr,
getter_AddRefs(listener),
getter_AddRefs(viewer));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(viewer, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIParser> parser = do_QueryInterface(listener);
if (!parser) {
/// We don't want to deal with the various fake documents yet
return NS_ERROR_NOT_IMPLEMENTED;
}
// We can't handle HTML and other weird things here yet.
nsIContentSink* sink = parser->GetContentSink();
nsCOMPtr<nsIXMLContentSink> xmlSink = do_QueryInterface(sink);
if (!xmlSink) {
return NS_ERROR_NOT_IMPLEMENTED;
}
listener.swap(mTargetListener);
viewer.forget(aViewer);
newLoadGroup.forget(aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP
nsExternalResourceMap::PendingLoad::OnDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aStream,
uint64_t aOffset,
uint32_t aCount)
{
NS_PRECONDITION(mTargetListener, "Shouldn't be getting called!");
if (mDisplayDocument->ExternalResourceMap().HaveShutDown()) {
return NS_BINDING_ABORTED;
}
return mTargetListener->OnDataAvailable(aRequest, aContext, aStream, aOffset,
aCount);
}
NS_IMETHODIMP
nsExternalResourceMap::PendingLoad::OnStopRequest(nsIRequest* aRequest,
nsISupports* aContext,
nsresult aStatus)
{
// mTargetListener might be null if SetupViewer or AddExternalResource failed
if (mTargetListener) {
nsCOMPtr<nsIStreamListener> listener;
mTargetListener.swap(listener);
return listener->OnStopRequest(aRequest, aContext, aStatus);
}
return NS_OK;
}
nsresult
nsExternalResourceMap::PendingLoad::StartLoad(nsIURI* aURI,
nsINode* aRequestingNode)
{
NS_PRECONDITION(aURI, "Must have a URI");
NS_PRECONDITION(aRequestingNode, "Must have a node");
// Time to start a load. First, the security checks.
nsIPrincipal* requestingPrincipal = aRequestingNode->NodePrincipal();
nsresult rv = nsContentUtils::GetSecurityManager()->
CheckLoadURIWithPrincipal(requestingPrincipal, aURI,
nsIScriptSecurityManager::STANDARD);
NS_ENSURE_SUCCESS(rv, rv);
// Allow data URIs and other URI's that inherit their principal by passing
// true as the 3rd argument of CheckMayLoad, since we want
// to allow external resources from data URIs regardless of the difference
// in URI scheme.
rv = requestingPrincipal->CheckMayLoad(aURI, true, true);
NS_ENSURE_SUCCESS(rv, rv);
int16_t shouldLoad = nsIContentPolicy::ACCEPT;
rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_OTHER,
aURI,
requestingPrincipal,
aRequestingNode,
EmptyCString(), //mime guess
nullptr, //extra
&shouldLoad,
nsContentUtils::GetContentPolicy(),
nsContentUtils::GetSecurityManager());
if (NS_FAILED(rv)) return rv;
if (NS_CP_REJECTED(shouldLoad)) {
// Disallowed by content policy
return NS_ERROR_CONTENT_BLOCKED;
}
nsIDocument* doc = aRequestingNode->OwnerDoc();
nsCOMPtr<nsIInterfaceRequestor> req = nsContentUtils::GetSameOriginChecker();
NS_ENSURE_TRUE(req, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<nsILoadGroup> loadGroup = doc->GetDocumentLoadGroup();
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel),
aURI,
aRequestingNode,
nsILoadInfo::SEC_NORMAL,
nsIContentPolicy::TYPE_OTHER,
loadGroup,
req); // aCallbacks
NS_ENSURE_SUCCESS(rv, rv);
mURI = aURI;
return channel->AsyncOpen(this, nullptr);
}
NS_IMPL_ISUPPORTS(nsExternalResourceMap::LoadgroupCallbacks,
nsIInterfaceRequestor)
#define IMPL_SHIM(_i) \
NS_IMPL_ISUPPORTS(nsExternalResourceMap::LoadgroupCallbacks::_i##Shim, _i)
IMPL_SHIM(nsILoadContext)
IMPL_SHIM(nsIProgressEventSink)
IMPL_SHIM(nsIChannelEventSink)
IMPL_SHIM(nsISecurityEventSink)
IMPL_SHIM(nsIApplicationCacheContainer)
#undef IMPL_SHIM
#define IID_IS(_i) aIID.Equals(NS_GET_IID(_i))
#define TRY_SHIM(_i) \
PR_BEGIN_MACRO \
if (IID_IS(_i)) { \
nsCOMPtr<_i> real = do_GetInterface(mCallbacks); \
if (!real) { \
return NS_NOINTERFACE; \
} \
nsCOMPtr<_i> shim = new _i##Shim(this, real); \
if (!shim) { \
return NS_ERROR_OUT_OF_MEMORY; \
} \
shim.forget(aSink); \
return NS_OK; \
} \
PR_END_MACRO
NS_IMETHODIMP
nsExternalResourceMap::LoadgroupCallbacks::GetInterface(const nsIID & aIID,
void **aSink)
{
if (mCallbacks &&
(IID_IS(nsIPrompt) || IID_IS(nsIAuthPrompt) || IID_IS(nsIAuthPrompt2) ||
IID_IS(nsITabChild))) {
return mCallbacks->GetInterface(aIID, aSink);
}
*aSink = nullptr;
TRY_SHIM(nsILoadContext);
TRY_SHIM(nsIProgressEventSink);
TRY_SHIM(nsIChannelEventSink);
TRY_SHIM(nsISecurityEventSink);
TRY_SHIM(nsIApplicationCacheContainer);
return NS_NOINTERFACE;
}
#undef TRY_SHIM
#undef IID_IS
nsExternalResourceMap::ExternalResource::~ExternalResource()
{
if (mViewer) {
mViewer->Close(nullptr);
mViewer->Destroy();
}
}
// ==================================================================
// =
// ==================================================================
// If we ever have an nsIDocumentObserver notification for stylesheet title
// changes we should update the list from that instead of overriding
// EnsureFresh.
class nsDOMStyleSheetSetList MOZ_FINAL : public DOMStringList
{
public:
explicit nsDOMStyleSheetSetList(nsIDocument* aDocument);
void Disconnect()
{
mDocument = nullptr;
}
virtual void EnsureFresh() MOZ_OVERRIDE;
protected:
nsIDocument* mDocument; // Our document; weak ref. It'll let us know if it
// dies.
};
nsDOMStyleSheetSetList::nsDOMStyleSheetSetList(nsIDocument* aDocument)
: mDocument(aDocument)
{
NS_ASSERTION(mDocument, "Must have document!");
}
void
nsDOMStyleSheetSetList::EnsureFresh()
{
MOZ_ASSERT(NS_IsMainThread());
mNames.Clear();
if (!mDocument) {
return; // Spec says "no exceptions", and we have no style sets if we have
// no document, for sure
}
int32_t count = mDocument->GetNumberOfStyleSheets();
nsAutoString title;
for (int32_t index = 0; index < count; index++) {
nsIStyleSheet* sheet = mDocument->GetStyleSheetAt(index);
NS_ASSERTION(sheet, "Null sheet in sheet list!");
sheet->GetTitle(title);
if (!title.IsEmpty() && !mNames.Contains(title) && !Add(title)) {
return;
}
}
}
// ==================================================================
nsIDocument::SelectorCache::SelectorCache()
: nsExpirationTracker<SelectorCacheKey, 4>(1000) { }
// CacheList takes ownership of aSelectorList.
void nsIDocument::SelectorCache::CacheList(const nsAString& aSelector,
nsCSSSelectorList* aSelectorList)
{
SelectorCacheKey* key = new SelectorCacheKey(aSelector);
mTable.Put(key->mKey, aSelectorList);
AddObject(key);
}
class nsIDocument::SelectorCacheKeyDeleter MOZ_FINAL : public nsRunnable
{
public:
explicit SelectorCacheKeyDeleter(SelectorCacheKey* aToDelete)
: mSelector(aToDelete)
{
MOZ_COUNT_CTOR(SelectorCacheKeyDeleter);
}
protected:
~SelectorCacheKeyDeleter()
{
MOZ_COUNT_DTOR(SelectorCacheKeyDeleter);
}
public:
NS_IMETHOD Run()
{
return NS_OK;
}
private:
nsAutoPtr<SelectorCacheKey> mSelector;
};
void nsIDocument::SelectorCache::NotifyExpired(SelectorCacheKey* aSelector)
{
RemoveObject(aSelector);
mTable.Remove(aSelector->mKey);
nsCOMPtr<nsIRunnable> runnable = new SelectorCacheKeyDeleter(aSelector);
NS_DispatchToCurrentThread(runnable);
}
struct nsIDocument::FrameRequest
{
FrameRequest(const FrameRequestCallbackHolder& aCallback,
int32_t aHandle) :
mCallback(aCallback),
mHandle(aHandle)
{}
// Conversion operator so that we can append these to a
// FrameRequestCallbackList
operator const FrameRequestCallbackHolder& () const {
return mCallback;
}
// Comparator operators to allow RemoveElementSorted with an
// integer argument on arrays of FrameRequest
bool operator==(int32_t aHandle) const {
return mHandle == aHandle;
}
bool operator<(int32_t aHandle) const {
return mHandle < aHandle;
}
FrameRequestCallbackHolder mCallback;
int32_t mHandle;
};
static already_AddRefed<mozilla::dom::NodeInfo> nullNodeInfo;
// ==================================================================
// =
// ==================================================================
nsIDocument::nsIDocument()
: nsINode(nullNodeInfo),
mReferrerPolicySet(false),
mReferrerPolicy(mozilla::net::RP_Default),
mCharacterSet(NS_LITERAL_CSTRING("ISO-8859-1")),
mNodeInfoManager(nullptr),
mCompatMode(eCompatibility_FullStandards),
mVisibilityState(dom::VisibilityState::Hidden),
mIsInitialDocumentInWindow(false),
mMayStartLayout(true),
mVisible(true),
mRemovedFromDocShell(false),
// mAllowDNSPrefetch starts true, so that we can always reliably && it
// with various values that might disable it. Since we never prefetch
// unless we get a window, and in that case the docshell value will get
// &&-ed in, this is safe.
mAllowDNSPrefetch(true),
mIsBeingUsedAsImage(false),
mHasLinksToUpdate(false),
mPartID(0),
mDidFireDOMContentLoaded(true)
{
SetInDocument();
PR_INIT_CLIST(&mDOMMediaQueryLists);
}
// NOTE! nsDocument::operator new() zeroes out all members, so don't
// bother initializing members to 0.
nsDocument::nsDocument(const char* aContentType)
: nsIDocument()
, mAnimatingImages(true)
, mViewportType(Unknown)
{
SetContentTypeInternal(nsDependentCString(aContentType));
#ifdef PR_LOGGING
if (!gDocumentLeakPRLog)
gDocumentLeakPRLog = PR_NewLogModule("DocumentLeak");
if (gDocumentLeakPRLog)
PR_LOG(gDocumentLeakPRLog, PR_LOG_DEBUG,
("DOCUMENT %p created", this));
if (!gCspPRLog)
gCspPRLog = PR_NewLogModule("CSP");
#endif
// Start out mLastStyleSheetSet as null, per spec
SetDOMStringToNull(mLastStyleSheetSet);
if (!sProcessingStack) {
sProcessingStack.emplace();
// Add the base queue sentinel to the processing stack.
sProcessingStack->AppendElement((CustomElementData*) nullptr);
}
}
static PLDHashOperator
ClearAllBoxObjects(nsIContent* aKey, nsPIBoxObject* aBoxObject, void* aUserArg)
{
if (aBoxObject) {
aBoxObject->Clear();
}
return PL_DHASH_NEXT;
}
nsIDocument::~nsIDocument()
{
NS_ABORT_IF_FALSE(PR_CLIST_IS_EMPTY(&mDOMMediaQueryLists),
"must not have media query lists left");
if (mNodeInfoManager) {
mNodeInfoManager->DropDocumentReference();
}
}
nsDocument::~nsDocument()
{
#ifdef PR_LOGGING
if (gDocumentLeakPRLog)
PR_LOG(gDocumentLeakPRLog, PR_LOG_DEBUG,
("DOCUMENT %p destroyed", this));
#endif
NS_ASSERTION(!mIsShowing, "Destroying a currently-showing document");
// Note: This assert is only non-fatal because mochitest-bc triggers
// it... as well as the preceding assert about !mIsShowing.
NS_ASSERTION(!mObservingAppThemeChanged,
"Document leaked to shutdown, then the observer service dropped "
"its ref to us so we were able to go away.");
if (IsTopLevelContentDocument()) {
//don't report for about: pages
nsCOMPtr<nsIPrincipal> principal = GetPrincipal();
nsCOMPtr<nsIURI> uri;
principal->GetURI(getter_AddRefs(uri));
bool isAboutScheme = true;
if (uri) {
uri->SchemeIs("about", &isAboutScheme);
}
if (!isAboutScheme) {
// Record the page load
uint32_t pageLoaded = 1;
Accumulate(Telemetry::MIXED_CONTENT_UNBLOCK_COUNTER, pageLoaded);
// Record the mixed content status of the docshell in Telemetry
enum {
NO_MIXED_CONTENT = 0, // There is no Mixed Content on the page
MIXED_DISPLAY_CONTENT = 1, // The page attempted to load Mixed Display Content
MIXED_ACTIVE_CONTENT = 2, // The page attempted to load Mixed Active Content
MIXED_DISPLAY_AND_ACTIVE_CONTENT = 3 // The page attempted to load Mixed Display & Mixed Active Content
};
bool mixedActiveLoaded = GetHasMixedActiveContentLoaded();
bool mixedActiveBlocked = GetHasMixedActiveContentBlocked();
bool mixedDisplayLoaded = GetHasMixedDisplayContentLoaded();
bool mixedDisplayBlocked = GetHasMixedDisplayContentBlocked();
bool hasMixedDisplay = (mixedDisplayBlocked || mixedDisplayLoaded);
bool hasMixedActive = (mixedActiveBlocked || mixedActiveLoaded);
uint32_t mixedContentLevel = NO_MIXED_CONTENT;
if (hasMixedDisplay && hasMixedActive) {
mixedContentLevel = MIXED_DISPLAY_AND_ACTIVE_CONTENT;
} else if (hasMixedActive){
mixedContentLevel = MIXED_ACTIVE_CONTENT;
} else if (hasMixedDisplay) {
mixedContentLevel = MIXED_DISPLAY_CONTENT;
}
Accumulate(Telemetry::MIXED_CONTENT_PAGE_LOAD, mixedContentLevel);
}
}
mInDestructor = true;
mInUnlinkOrDeletion = true;
mRegistry = nullptr;
mozilla::DropJSObjects(this);
// Clear mObservers to keep it in sync with the mutationobserver list
mObservers.Clear();
if (mStyleSheetSetList) {
mStyleSheetSetList->Disconnect();
}
if (mAnimationController) {
mAnimationController->Disconnect();
}
mParentDocument = nullptr;
// Kill the subdocument map, doing this will release its strong
// references, if any.
if (mSubDocuments) {
PL_DHashTableDestroy(mSubDocuments);
mSubDocuments = nullptr;
}
// Destroy link map now so we don't waste time removing
// links one by one
DestroyElementMaps();
nsAutoScriptBlocker scriptBlocker;
int32_t indx; // must be signed
uint32_t count = mChildren.ChildCount();
for (indx = int32_t(count) - 1; indx >= 0; --indx) {
mChildren.ChildAt(indx)->UnbindFromTree();
mChildren.RemoveChildAt(indx);
}
mFirstChild = nullptr;
mCachedRootElement = nullptr;
// Let the stylesheets know we're going away
indx = mStyleSheets.Count();
while (--indx >= 0) {
mStyleSheets[indx]->SetOwningDocument(nullptr);
}
if (mAttrStyleSheet) {
mAttrStyleSheet->SetOwningDocument(nullptr);
}
// We don't own the mOnDemandBuiltInUASheets, so we don't need to reset them.
if (mListenerManager) {
mListenerManager->Disconnect();
UnsetFlags(NODE_HAS_LISTENERMANAGER);
}
if (mScriptLoader) {
mScriptLoader->DropDocumentReference();
}
if (mCSSLoader) {
// Could be null here if Init() failed or if we have been unlinked.
mCSSLoader->DropDocumentReference();
}
if (mStyleImageLoader) {
mStyleImageLoader->DropDocumentReference();
}
delete mHeaderData;
if (mBoxObjectTable) {
mBoxObjectTable->EnumerateRead(ClearAllBoxObjects, nullptr);
delete mBoxObjectTable;
}
mPendingTitleChangeEvent.Revoke();
for (uint32_t i = 0; i < mHostObjectURIs.Length(); ++i) {
nsHostObjectProtocolHandler::RemoveDataEntry(mHostObjectURIs[i]);
}
// We don't want to leave residual locks on images. Make sure we're in an
// unlocked state, and then clear the table.
SetImageLockingState(false);
mImageTracker.Clear();
mPlugins.Clear();
}
NS_INTERFACE_TABLE_HEAD(nsDocument)
NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
NS_INTERFACE_TABLE_BEGIN
NS_INTERFACE_TABLE_ENTRY_AMBIGUOUS(nsDocument, nsISupports, nsINode)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsINode)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIDocument)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIDOMDocument)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIDOMNode)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIDOMDocumentXBL)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIScriptObjectPrincipal)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIDOMEventTarget)
NS_INTERFACE_TABLE_ENTRY(nsDocument, mozilla::dom::EventTarget)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsISupportsWeakReference)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIRadioGroupContainer)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIMutationObserver)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIApplicationCacheContainer)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIObserver)
NS_INTERFACE_TABLE_ENTRY(nsDocument, nsIDOMXPathEvaluator)
NS_INTERFACE_TABLE_END
NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(nsDocument)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDocument)
NS_IMETHODIMP_(MozExternalRefCountType)
nsDocument::Release()
{
NS_PRECONDITION(0 != mRefCnt, "dup release");
NS_ASSERT_OWNINGTHREAD(nsDocument);
nsISupports* base = NS_CYCLE_COLLECTION_CLASSNAME(nsDocument)::Upcast(this);
bool shouldDelete = false;
nsrefcnt count = mRefCnt.decr(base, &shouldDelete);
NS_LOG_RELEASE(this, count, "nsDocument");
if (count == 0) {
if (mStackRefCnt && !mNeedsReleaseAfterStackRefCntRelease) {
mNeedsReleaseAfterStackRefCntRelease = true;
NS_ADDREF_THIS();
return mRefCnt.get();
}
mRefCnt.incr(base);
nsNodeUtils::LastRelease(this);
mRefCnt.decr(base);
if (shouldDelete) {
mRefCnt.stabilizeForDeletion();
DeleteCycleCollectable();
}
}
return count;
}
NS_IMETHODIMP_(void)
nsDocument::DeleteCycleCollectable()
{
delete this;
}
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(nsDocument)
if (Element::CanSkip(tmp, aRemovingAllowed)) {
EventListenerManager* elm = tmp->GetExistingListenerManager();
if (elm) {
elm->MarkForCC();
}
return true;
}
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(nsDocument)
return Element::CanSkipInCC(tmp);
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(nsDocument)
return Element::CanSkipThis(tmp);
NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
static PLDHashOperator
SubDocTraverser(PLDHashTable *table, PLDHashEntryHdr *hdr, uint32_t number,
void *arg)
{
SubDocMapEntry *entry = static_cast<SubDocMapEntry*>(hdr);
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(arg);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, "mSubDocuments entry->mKey");
cb->NoteXPCOMChild(entry->mKey);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, "mSubDocuments entry->mSubDocument");
cb->NoteXPCOMChild(entry->mSubDocument);
return PL_DHASH_NEXT;
}
static PLDHashOperator
RadioGroupsTraverser(const nsAString& aKey, nsRadioGroupStruct* aData,
void* aClosure)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mRadioGroups entry->mSelectedRadioButton");
cb->NoteXPCOMChild(ToSupports(aData->mSelectedRadioButton));
uint32_t i, count = aData->mRadioButtons.Count();
for (i = 0; i < count; ++i) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb,
"mRadioGroups entry->mRadioButtons[i]");
cb->NoteXPCOMChild(aData->mRadioButtons[i]);
}
return PL_DHASH_NEXT;
}
static PLDHashOperator
BoxObjectTraverser(nsIContent* key, nsPIBoxObject* boxObject, void* userArg)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(userArg);
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, "mBoxObjectTable entry");
cb->NoteXPCOMChild(boxObject);
return PL_DHASH_NEXT;
}
static PLDHashOperator
IdentifierMapEntryTraverse(nsIdentifierMapEntry *aEntry, void *aArg)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(aArg);
aEntry->Traverse(cb);
return PL_DHASH_NEXT;
}
static const char* kNSURIs[] = {
"([none])",
"(xmlns)",
"(xml)",
"(xhtml)",
"(XLink)",
"(XSLT)",
"(XBL)",
"(MathML)",
"(RDF)",
"(XUL)"
};
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsDocument)
if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
char name[512];
nsAutoCString loadedAsData;
if (tmp->IsLoadedAsData()) {
loadedAsData.AssignLiteral("data");
} else {
loadedAsData.AssignLiteral("normal");
}
uint32_t nsid = tmp->GetDefaultNamespaceID();
nsAutoCString uri;
if (tmp->mDocumentURI)
tmp->mDocumentURI->GetSpec(uri);
if (nsid < ArrayLength(kNSURIs)) {
PR_snprintf(name, sizeof(name), "nsDocument %s %s %s",
loadedAsData.get(), kNSURIs[nsid], uri.get());
}
else {
PR_snprintf(name, sizeof(name), "nsDocument %s %s",
loadedAsData.get(), uri.get());
}
cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name);
}
else {
NS_IMPL_CYCLE_COLLECTION_DESCRIBE(nsDocument, tmp->mRefCnt.get())
}
// Always need to traverse script objects, so do that before we check
// if we're uncollectable.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
if (!nsINode::Traverse(tmp, cb)) {
return NS_SUCCESS_INTERRUPTED_TRAVERSE;
}
tmp->mIdentifierMap.EnumerateEntries(IdentifierMapEntryTraverse, &cb);
tmp->mExternalResourceMap.Traverse(&cb);
// Traverse the mChildren nsAttrAndChildArray.
for (int32_t indx = int32_t(tmp->mChildren.ChildCount()); indx > 0; --indx) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mChildren[i]");
cb.NoteXPCOMChild(tmp->mChildren.ChildAt(indx - 1));
}
// Traverse all nsIDocument pointer members.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSecurityInfo)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDisplayDocument)
// Traverse all nsDocument nsCOMPtrs.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParser)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mScriptGlobalObject)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mListenerManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDOMStyleSheets)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStyleSheetSetList)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mScriptLoader)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMasterDocument)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mImportManager)
tmp->mRadioGroups.EnumerateRead(RadioGroupsTraverser, &cb);
// The boxobject for an element will only exist as long as it's in the
// document, so we'll traverse the table here instead of from the element.
if (tmp->mBoxObjectTable) {
tmp->mBoxObjectTable->EnumerateRead(BoxObjectTraverser, &cb);
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChannel)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStyleAttrStyleSheet)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mXPathEvaluator)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLayoutHistoryState)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOnloadBlocker)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFirstBaseNodeWithHref)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDOMImplementation)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mImageMaps)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOriginalDocument)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCachedEncoder)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStateObjectCached)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mUndoManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAnimationTimeline)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPendingPlayerTracker)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTemplateContentsOwner)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChildrenCollection)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRegistry)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAnonymousContents)
// Traverse all our nsCOMArrays.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStyleSheets)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOnDemandBuiltInUASheets)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPreloadingImages)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSubImportLinks)
for (uint32_t i = 0; i < tmp->mFrameRequestCallbacks.Length(); ++i) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mFrameRequestCallbacks[i]");
cb.NoteXPCOMChild(tmp->mFrameRequestCallbacks[i].mCallback.GetISupports());
}
// Traverse animation components
if (tmp->mAnimationController) {
tmp->mAnimationController->Traverse(&cb);
}
if (tmp->mSubDocuments && tmp->mSubDocuments->ops) {
PL_DHashTableEnumerate(tmp->mSubDocuments, SubDocTraverser, &cb);
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCSSLoader)
for (uint32_t i = 0; i < tmp->mHostObjectURIs.Length(); ++i) {
nsHostObjectProtocolHandler::Traverse(tmp->mHostObjectURIs[i], cb);
}
// We own only the items in mDOMMediaQueryLists that have listeners;
// this reference is managed by their AddListener and RemoveListener
// methods.
for (PRCList *l = PR_LIST_HEAD(&tmp->mDOMMediaQueryLists);
l != &tmp->mDOMMediaQueryLists; l = PR_NEXT_LINK(l)) {
MediaQueryList *mql = static_cast<MediaQueryList*>(l);
if (mql->HasListeners()) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mDOMMediaQueryLists item");
cb.NoteXPCOMChild(mql);
}
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_CLASS(nsDocument)
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsDocument)
if (tmp->PreservingWrapper()) {
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mExpandoAndGeneration.expando);
}
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDocument)
tmp->mInUnlinkOrDeletion = true;
// Clear out our external resources
tmp->mExternalResourceMap.Shutdown();
nsAutoScriptBlocker scriptBlocker;
nsINode::Unlink(tmp);
// Unlink the mChildren nsAttrAndChildArray.
for (int32_t indx = int32_t(tmp->mChildren.ChildCount()) - 1;
indx >= 0; --indx) {
tmp->mChildren.ChildAt(indx)->UnbindFromTree();
tmp->mChildren.RemoveChildAt(indx);
}
tmp->mFirstChild = nullptr;
NS_IMPL_CYCLE_COLLECTION_UNLINK(mXPathEvaluator)
tmp->mCachedRootElement = nullptr; // Avoid a dangling pointer
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDisplayDocument)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFirstBaseNodeWithHref)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDOMImplementation)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mImageMaps)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mOriginalDocument)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCachedEncoder)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mUndoManager)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mAnimationTimeline)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mPendingPlayerTracker)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mTemplateContentsOwner)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mChildrenCollection)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mRegistry)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mMasterDocument)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mImportManager)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSubImportLinks)
tmp->mParentDocument = nullptr;
NS_IMPL_CYCLE_COLLECTION_UNLINK(mPreloadingImages)
if (tmp->mBoxObjectTable) {
tmp->mBoxObjectTable->EnumerateRead(ClearAllBoxObjects, nullptr);
delete tmp->mBoxObjectTable;
tmp->mBoxObjectTable = nullptr;
}
if (tmp->mListenerManager) {
tmp->mListenerManager->Disconnect();
tmp->UnsetFlags(NODE_HAS_LISTENERMANAGER);
tmp->mListenerManager = nullptr;
}
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDOMStyleSheets)
if (tmp->mStyleSheetSetList) {
tmp->mStyleSheetSetList->Disconnect();
tmp->mStyleSheetSetList = nullptr;
}
if (tmp->mSubDocuments) {
PL_DHashTableDestroy(tmp->mSubDocuments);
tmp->mSubDocuments = nullptr;
}
tmp->mFrameRequestCallbacks.Clear();
tmp->mRadioGroups.Clear();
// nsDocument has a pretty complex destructor, so we're going to
// assume that *most* cycles you actually want to break somewhere
// else, and not unlink an awful lot here.
tmp->mIdentifierMap.Clear();
tmp->mExpandoAndGeneration.Unlink();
if (tmp->mAnimationController) {
tmp->mAnimationController->Unlink();
}
tmp->mPendingTitleChangeEvent.Revoke();
if (tmp->mCSSLoader) {
tmp->mCSSLoader->DropDocumentReference();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCSSLoader)
}
for (uint32_t i = 0; i < tmp->mHostObjectURIs.Length(); ++i) {
nsHostObjectProtocolHandler::RemoveDataEntry(tmp->mHostObjectURIs[i]);
}
// We own only the items in mDOMMediaQueryLists that have listeners;
// this reference is managed by their AddListener and RemoveListener
// methods.
for (PRCList *l = PR_LIST_HEAD(&tmp->mDOMMediaQueryLists);
l != &tmp->mDOMMediaQueryLists; ) {
PRCList *next = PR_NEXT_LINK(l);
MediaQueryList *mql = static_cast<MediaQueryList*>(l);
mql->RemoveAllListeners();
l = next;
}
tmp->mInUnlinkOrDeletion = false;
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
static bool sPrefsInitialized = false;
static uint32_t sOnloadDecodeLimit = 0;
nsresult
nsDocument::Init()
{
if (mCSSLoader || mStyleImageLoader || mNodeInfoManager || mScriptLoader) {
return NS_ERROR_ALREADY_INITIALIZED;
}
if (!sPrefsInitialized) {
sPrefsInitialized = true;
Preferences::AddUintVarCache(&sOnloadDecodeLimit, "image.onload.decode.limit", 0);
}
// Force initialization.
nsINode::nsSlots* slots = Slots();
// Prepend self as mutation-observer whether we need it or not (some
// subclasses currently do, other don't). This is because the code in
// nsNodeUtils always notifies the first observer first, expecting the
// first observer to be the document.
NS_ENSURE_TRUE(slots->mMutationObservers.PrependElementUnlessExists(static_cast<nsIMutationObserver*>(this)),
NS_ERROR_OUT_OF_MEMORY);
mOnloadBlocker = new nsOnloadBlocker();
mCSSLoader = new mozilla::css::Loader(this);
// Assume we're not quirky, until we know otherwise
mCSSLoader->SetCompatibilityMode(eCompatibility_FullStandards);
mStyleImageLoader = new mozilla::css::ImageLoader(this);
mNodeInfoManager = new nsNodeInfoManager();
nsresult rv = mNodeInfoManager->Init(this);
NS_ENSURE_SUCCESS(rv, rv);
// mNodeInfo keeps NodeInfoManager alive!
mNodeInfo = mNodeInfoManager->GetDocumentNodeInfo();
NS_ENSURE_TRUE(mNodeInfo, NS_ERROR_OUT_OF_MEMORY);
NS_ABORT_IF_FALSE(mNodeInfo->NodeType() == nsIDOMNode::DOCUMENT_NODE,
"Bad NodeType in aNodeInfo");
NS_ASSERTION(OwnerDoc() == this, "Our nodeinfo is busted!");
// If after creation the owner js global is not set for a document
// we use the default compartment for this document, instead of creating
// wrapper in some random compartment when the document is exposed to js
// via some events.
nsCOMPtr<nsIGlobalObject> global = xpc::NativeGlobal(xpc::PrivilegedJunkScope());
NS_ENSURE_TRUE(global, NS_ERROR_FAILURE);
mScopeObject = do_GetWeakReference(global);
MOZ_ASSERT(mScopeObject);
mScriptLoader = new nsScriptLoader(this);
mozilla::HoldJSObjects(this);
return NS_OK;
}
void
nsIDocument::DeleteAllProperties()
{
for (uint32_t i = 0; i < GetPropertyTableCount(); ++i) {
PropertyTable(i)->DeleteAllProperties();
}
}
void
nsIDocument::DeleteAllPropertiesFor(nsINode* aNode)
{
for (uint32_t i = 0; i < GetPropertyTableCount(); ++i) {
PropertyTable(i)->DeleteAllPropertiesFor(aNode);
}
}
nsPropertyTable*
nsIDocument::GetExtraPropertyTable(uint16_t aCategory)
{
NS_ASSERTION(aCategory > 0, "Category 0 should have already been handled");
while (aCategory >= mExtraPropertyTables.Length() + 1) {
mExtraPropertyTables.AppendElement(new nsPropertyTable());
}
return mExtraPropertyTables[aCategory - 1];
}
bool
nsIDocument::IsVisibleConsideringAncestors() const
{
const nsIDocument *parent = this;
do {
if (!parent->IsVisible()) {
return false;
}
} while ((parent = parent->GetParentDocument()));
return true;
}
void
nsDocument::Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup)
{
nsCOMPtr<nsIURI> uri;
nsCOMPtr<nsIPrincipal> principal;
if (aChannel) {
// Note: this code is duplicated in XULDocument::StartDocumentLoad and
// nsScriptSecurityManager::GetChannelResultPrincipal.
// Note: this should match nsDocShell::OnLoadingSite
NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
nsIScriptSecurityManager *securityManager =
nsContentUtils::GetSecurityManager();
if (securityManager) {
securityManager->GetChannelResultPrincipal(aChannel,
getter_AddRefs(principal));
}
}
ResetToURI(uri, aLoadGroup, principal);
nsCOMPtr<nsIPropertyBag2> bag = do_QueryInterface(aChannel);
if (bag) {
nsCOMPtr<nsIURI> baseURI;
bag->GetPropertyAsInterface(NS_LITERAL_STRING("baseURI"),
NS_GET_IID(nsIURI), getter_AddRefs(baseURI));
if (baseURI) {
mDocumentBaseURI = baseURI;
mChromeXHRDocBaseURI = baseURI;
}
}
mChannel = aChannel;
}
void
nsDocument::ResetToURI(nsIURI *aURI, nsILoadGroup *aLoadGroup,
nsIPrincipal* aPrincipal)
{
NS_PRECONDITION(aURI, "Null URI passed to ResetToURI");
#ifdef PR_LOGGING
if (gDocumentLeakPRLog && PR_LOG_TEST(gDocumentLeakPRLog, PR_LOG_DEBUG)) {
nsAutoCString spec;
aURI->GetSpec(spec);
PR_LogPrint("DOCUMENT %p ResetToURI %s", this, spec.get());
}
#endif
mSecurityInfo = nullptr;
mDocumentLoadGroup = nullptr;
// Delete references to sub-documents and kill the subdocument map,
// if any. It holds strong references
if (mSubDocuments) {
PL_DHashTableDestroy(mSubDocuments);
mSubDocuments = nullptr;
}
// Destroy link map now so we don't waste time removing
// links one by one
DestroyElementMaps();
bool oldVal = mInUnlinkOrDeletion;
mInUnlinkOrDeletion = true;
uint32_t count = mChildren.ChildCount();
{ // Scope for update
MOZ_AUTO_DOC_UPDATE(this, UPDATE_CONTENT_MODEL, true);
for (int32_t i = int32_t(count) - 1; i >= 0; i--) {
nsCOMPtr<nsIContent> content = mChildren.ChildAt(i);
nsIContent* previousSibling = content->GetPreviousSibling();
if (nsINode::GetFirstChild() == content) {
mFirstChild = content->GetNextSibling();
}
mChildren.RemoveChildAt(i);
nsNodeUtils::ContentRemoved(this, content, i, previousSibling);
content->UnbindFromTree();
}
mCachedRootElement = nullptr;
}
mInUnlinkOrDeletion = oldVal;
if (!mMasterDocument) {
// "When creating an import, use the registry of the master document."
// Note: at this point the mMasterDocument is already set for imports
// (and only for imports)
mRegistry = nullptr;
}
// Reset our stylesheets
ResetStylesheetsToURI(aURI);
// Release the listener manager
if (mListenerManager) {
mListenerManager->Disconnect();
mListenerManager = nullptr;
}
// Release the stylesheets list.
mDOMStyleSheets = nullptr;
// Release our principal after tearing down the document, rather than before.
// This ensures that, during teardown, the document and the dying window (which
// already nulled out its document pointer and cached the principal) have
// matching principals.
SetPrincipal(nullptr);
// Clear the original URI so SetDocumentURI sets it.
mOriginalURI = nullptr;
SetDocumentURI(aURI);
mChromeXHRDocURI = aURI;
// If mDocumentBaseURI is null, nsIDocument::GetBaseURI() returns
// mDocumentURI.
mDocumentBaseURI = nullptr;
mChromeXHRDocBaseURI = nullptr;
if (aLoadGroup) {
mDocumentLoadGroup = do_GetWeakReference(aLoadGroup);
// there was an assertion here that aLoadGroup was not null. This
// is no longer valid: nsDocShell::SetDocument does not create a
// load group, and it works just fine
// XXXbz what does "just fine" mean exactly? And given that there
// is no nsDocShell::SetDocument, what is this talking about?
}
mLastModified.Truncate();
// XXXbz I guess we're assuming that the caller will either pass in
// a channel with a useful type or call SetContentType?
SetContentTypeInternal(EmptyCString());
mContentLanguage.Truncate();
mBaseTarget.Truncate();
mReferrer.Truncate();
mXMLDeclarationBits = 0;
// Now get our new principal
if (aPrincipal) {
SetPrincipal(aPrincipal);
} else {
nsIScriptSecurityManager *securityManager =
nsContentUtils::GetSecurityManager();
if (securityManager) {
nsCOMPtr<nsILoadContext> loadContext(mDocumentContainer);
if (!loadContext && aLoadGroup) {
nsCOMPtr<nsIInterfaceRequestor> cbs;
aLoadGroup->GetNotificationCallbacks(getter_AddRefs(cbs));
loadContext = do_GetInterface(cbs);
}
MOZ_ASSERT(loadContext,
"must have a load context or pass in an explicit principal");
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = securityManager->
GetLoadContextCodebasePrincipal(mDocumentURI, loadContext,
getter_AddRefs(principal));
if (NS_SUCCEEDED(rv)) {
SetPrincipal(principal);
}
}
}
// Refresh the principal on the compartment.
nsPIDOMWindow* win = GetInnerWindow();
if (win) {
win->RefreshCompartmentPrincipal();
}
}
void
nsDocument::RemoveDocStyleSheetsFromStyleSets()
{
// The stylesheets should forget us
int32_t indx = mStyleSheets.Count();
while (--indx >= 0) {
nsIStyleSheet* sheet = mStyleSheets[indx];
sheet->SetOwningDocument(nullptr);
if (sheet->IsApplicable()) {
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
shell->StyleSet()->RemoveDocStyleSheet(sheet);
}
}
// XXX Tell observers?
}
}
void
nsDocument::RemoveStyleSheetsFromStyleSets(nsCOMArray<nsIStyleSheet>& aSheets, nsStyleSet::sheetType aType)
{
// The stylesheets should forget us
int32_t indx = aSheets.Count();
while (--indx >= 0) {
nsIStyleSheet* sheet = aSheets[indx];
sheet->SetOwningDocument(nullptr);
if (sheet->IsApplicable()) {
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
shell->StyleSet()->RemoveStyleSheet(aType, sheet);
}
}
// XXX Tell observers?
}
}
void
nsDocument::ResetStylesheetsToURI(nsIURI* aURI)
{
MOZ_ASSERT(aURI);
mozAutoDocUpdate upd(this, UPDATE_STYLE, true);
RemoveDocStyleSheetsFromStyleSets();
RemoveStyleSheetsFromStyleSets(mOnDemandBuiltInUASheets, nsStyleSet::eAgentSheet);
RemoveStyleSheetsFromStyleSets(mAdditionalSheets[eAgentSheet], nsStyleSet::eAgentSheet);
RemoveStyleSheetsFromStyleSets(mAdditionalSheets[eUserSheet], nsStyleSet::eUserSheet);
RemoveStyleSheetsFromStyleSets(mAdditionalSheets[eAuthorSheet], nsStyleSet::eDocSheet);
// Release all the sheets
mStyleSheets.Clear();
mOnDemandBuiltInUASheets.Clear();
for (uint32_t i = 0; i < SheetTypeCount; ++i)
mAdditionalSheets[i].Clear();
// NOTE: We don't release the catalog sheets. It doesn't really matter
// now, but it could in the future -- in which case not releasing them
// is probably the right thing to do.
// Now reset our inline style and attribute sheets.
if (mAttrStyleSheet) {
mAttrStyleSheet->Reset();
mAttrStyleSheet->SetOwningDocument(this);
} else {
mAttrStyleSheet = new nsHTMLStyleSheet(this);
}
if (!mStyleAttrStyleSheet) {
mStyleAttrStyleSheet = new nsHTMLCSSStyleSheet();
}
if (!mSVGAttrAnimationRuleProcessor) {
mSVGAttrAnimationRuleProcessor =
new mozilla::SVGAttrAnimationRuleProcessor();
}
// Now set up our style sets
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
FillStyleSet(shell->StyleSet());
}
}
static bool
AppendAuthorSheet(nsIStyleSheet *aSheet, void *aData)
{
nsStyleSet *styleSet = static_cast<nsStyleSet*>(aData);
styleSet->AppendStyleSheet(nsStyleSet::eDocSheet, aSheet);
return true;
}
static void
AppendSheetsToStyleSet(nsStyleSet* aStyleSet,
const nsCOMArray<nsIStyleSheet>& aSheets,
nsStyleSet::sheetType aType)
{
for (int32_t i = aSheets.Count() - 1; i >= 0; --i) {
aStyleSet->AppendStyleSheet(aType, aSheets[i]);
}
}
void
nsDocument::FillStyleSet(nsStyleSet* aStyleSet)
{
NS_PRECONDITION(aStyleSet, "Must have a style set");
NS_PRECONDITION(aStyleSet->SheetCount(nsStyleSet::eDocSheet) == 0,
"Style set already has document sheets?");
// We could consider moving this to nsStyleSet::Init, to match its
// handling of the eAnimationSheet and eTransitionSheet levels.
aStyleSet->DirtyRuleProcessors(nsStyleSet::ePresHintSheet);
aStyleSet->DirtyRuleProcessors(nsStyleSet::eStyleAttrSheet);
int32_t i;
for (i = mStyleSheets.Count() - 1; i >= 0; --i) {
nsIStyleSheet* sheet = mStyleSheets[i];
if (sheet->IsApplicable()) {
aStyleSet->AddDocStyleSheet(sheet, this);
}
}
nsStyleSheetService *sheetService = nsStyleSheetService::GetInstance();
if (sheetService) {
sheetService->AuthorStyleSheets()->EnumerateForwards(AppendAuthorSheet,
aStyleSet);
}
// Iterate backwards to maintain order
for (i = mOnDemandBuiltInUASheets.Count() - 1; i >= 0; --i) {
nsIStyleSheet* sheet = mOnDemandBuiltInUASheets[i];
if (sheet->IsApplicable()) {
aStyleSet->PrependStyleSheet(nsStyleSet::eAgentSheet, sheet);
}
}
AppendSheetsToStyleSet(aStyleSet, mAdditionalSheets[eAgentSheet],
nsStyleSet::eAgentSheet);
AppendSheetsToStyleSet(aStyleSet, mAdditionalSheets[eUserSheet],
nsStyleSet::eUserSheet);
AppendSheetsToStyleSet(aStyleSet, mAdditionalSheets[eAuthorSheet],
nsStyleSet::eDocSheet);
}
static void
WarnIfSandboxIneffective(nsIDocShell* aDocShell,
uint32_t aSandboxFlags,
nsIChannel* aChannel)
{
// If the document is sandboxed (via the HTML5 iframe sandbox
// attribute) and both the allow-scripts and allow-same-origin
// keywords are supplied, the sandboxed document can call into its
// parent document and remove its sandboxing entirely - we print a
// warning to the web console in this case.
if (aSandboxFlags & SANDBOXED_NAVIGATION &&
!(aSandboxFlags & SANDBOXED_SCRIPTS) &&
!(aSandboxFlags & SANDBOXED_ORIGIN)) {
nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
aDocShell->GetSameTypeParent(getter_AddRefs(parentAsItem));
nsCOMPtr<nsIDocShell> parentDocShell = do_QueryInterface(parentAsItem);
if (!parentDocShell) {
return;
}
// Don't warn if our parent is not the top-level document.
nsCOMPtr<nsIDocShellTreeItem> grandParentAsItem;
parentDocShell->GetSameTypeParent(getter_AddRefs(grandParentAsItem));
if (grandParentAsItem) {
return;
}
nsCOMPtr<nsIChannel> parentChannel;
parentDocShell->GetCurrentDocumentChannel(getter_AddRefs(parentChannel));
if (!parentChannel) {
return;
}
nsresult rv = nsContentUtils::CheckSameOrigin(aChannel, parentChannel);
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIDocument> parentDocument = do_GetInterface(parentDocShell);
nsCOMPtr<nsIURI> iframeUri;
parentChannel->GetURI(getter_AddRefs(iframeUri));
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("Iframe Sandbox"),
parentDocument,
nsContentUtils::eSECURITY_PROPERTIES,
"BothAllowScriptsAndSameOriginPresent",
nullptr, 0, iframeUri);
}
}
nsresult
nsDocument::StartDocumentLoad(const char* aCommand, nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener **aDocListener,
bool aReset, nsIContentSink* aSink)
{
#ifdef PR_LOGGING
if (gDocumentLeakPRLog && PR_LOG_TEST(gDocumentLeakPRLog, PR_LOG_DEBUG)) {
nsCOMPtr<nsIURI> uri;
aChannel->GetURI(getter_AddRefs(uri));
nsAutoCString spec;
if (uri)
uri->GetSpec(spec);
PR_LogPrint("DOCUMENT %p StartDocumentLoad %s", this, spec.get());
}
#endif
#ifdef DEBUG
{
uint32_t appId;
nsresult rv = NodePrincipal()->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
MOZ_ASSERT(appId != nsIScriptSecurityManager::UNKNOWN_APP_ID,
"Document should never have UNKNOWN_APP_ID");
}
#endif
MOZ_ASSERT(GetReadyStateEnum() == nsIDocument::READYSTATE_UNINITIALIZED,
"Bad readyState");
SetReadyStateInternal(READYSTATE_LOADING);
if (nsCRT::strcmp(kLoadAsData, aCommand) == 0) {
mLoadedAsData = true;
// We need to disable script & style loading in this case.
// We leave them disabled even in EndLoad(), and let anyone
// who puts the document on display to worry about enabling.
// Do not load/process scripts when loading as data
ScriptLoader()->SetEnabled(false);
// styles
CSSLoader()->SetEnabled(false); // Do not load/process styles when loading as data
} else if (nsCRT::strcmp("external-resource", aCommand) == 0) {
// Allow CSS, but not scripts
ScriptLoader()->SetEnabled(false);
}
mMayStartLayout = false;
mHaveInputEncoding = true;
if (aReset) {
Reset(aChannel, aLoadGroup);
}
nsAutoCString contentType;
nsCOMPtr<nsIPropertyBag2> bag = do_QueryInterface(aChannel);
if ((bag && NS_SUCCEEDED(bag->GetPropertyAsACString(
NS_LITERAL_STRING("contentType"), contentType))) ||
NS_SUCCEEDED(aChannel->GetContentType(contentType))) {
// XXX this is only necessary for viewsource:
nsACString::const_iterator start, end, semicolon;
contentType.BeginReading(start);
contentType.EndReading(end);
semicolon = start;
FindCharInReadable(';', semicolon, end);
SetContentTypeInternal(Substring(start, semicolon));
}
RetrieveRelevantHeaders(aChannel);
mChannel = aChannel;
nsCOMPtr<nsIInputStreamChannel> inStrmChan = do_QueryInterface(mChannel);
if (inStrmChan) {
bool isSrcdocChannel;
inStrmChan->GetIsSrcdocChannel(&isSrcdocChannel);
if (isSrcdocChannel) {
mIsSrcdocDocument = true;
}
}
// If this document is being loaded by a docshell, copy its sandbox flags
// to the document. These are immutable after being set here.
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(aContainer);
if (docShell) {
nsresult rv = docShell->GetSandboxFlags(&mSandboxFlags);
NS_ENSURE_SUCCESS(rv, rv);
WarnIfSandboxIneffective(docShell, mSandboxFlags, GetChannel());
}
// If this is not a data document, set CSP.
if (!mLoadedAsData) {
nsresult rv = InitCSP(aChannel);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
void
CSPErrorQueue::Add(const char* aMessageName)
{
mErrors.AppendElement(aMessageName);
}
void
CSPErrorQueue::Flush(nsIDocument* aDocument)
{
for (uint32_t i = 0; i < mErrors.Length(); i++) {
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("CSP"), aDocument,
nsContentUtils::eSECURITY_PROPERTIES,
mErrors[i]);
}
mErrors.Clear();
}
void
nsDocument::SendToConsole(nsCOMArray<nsISecurityConsoleMessage>& aMessages)
{
for (uint32_t i = 0; i < aMessages.Length(); ++i) {
nsAutoString messageTag;
aMessages[i]->GetTag(messageTag);
nsAutoString category;
aMessages[i]->GetCategory(category);
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_ConvertUTF16toUTF8(category),
this, nsContentUtils::eSECURITY_PROPERTIES,
NS_ConvertUTF16toUTF8(messageTag).get());
}
}
static nsresult
AppendCSPFromHeader(nsIContentSecurityPolicy* csp,
const nsAString& aHeaderValue,
bool aReportOnly)
{
// Need to tokenize the header value since multiple headers could be
// concatenated into one comma-separated list of policies.
// See RFC2616 section 4.2 (last paragraph)
nsresult rv = NS_OK;
nsCharSeparatedTokenizer tokenizer(aHeaderValue, ',');
while (tokenizer.hasMoreTokens()) {
const nsSubstring& policy = tokenizer.nextToken();
rv = csp->AppendPolicy(policy, aReportOnly);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef PR_LOGGING
{
PR_LOG(gCspPRLog, PR_LOG_DEBUG,
("CSP refined with policy: \"%s\"",
NS_ConvertUTF16toUTF8(policy).get()));
}
#endif
}
return NS_OK;
}
bool
nsDocument::IsLoopDocument(nsIChannel *aChannel)
{
nsCOMPtr<nsIURI> chanURI;
nsresult rv = aChannel->GetOriginalURI(getter_AddRefs(chanURI));
NS_ENSURE_SUCCESS(rv, false);
bool isAbout = false;
bool isLoop = false;
rv = chanURI->SchemeIs("about", &isAbout);
NS_ENSURE_SUCCESS(rv, false);
if (isAbout) {
nsCOMPtr<nsIURI> loopURI;
rv = NS_NewURI(getter_AddRefs(loopURI), "about:loopconversation");
NS_ENSURE_SUCCESS(rv, false);
rv = chanURI->EqualsExceptRef(loopURI, &isLoop);
NS_ENSURE_SUCCESS(rv, false);
if (!isLoop) {
rv = NS_NewURI(getter_AddRefs(loopURI), "about:looppanel");
NS_ENSURE_SUCCESS(rv, false);
rv = chanURI->EqualsExceptRef(loopURI, &isLoop);
NS_ENSURE_SUCCESS(rv, false);
}
}
return isLoop;
}
nsresult
nsDocument::InitCSP(nsIChannel* aChannel)
{
nsCOMPtr<nsIContentSecurityPolicy> csp;
if (!CSPService::sCSPEnabled) {
#ifdef PR_LOGGING
PR_LOG(gCspPRLog, PR_LOG_DEBUG,
("CSP is disabled, skipping CSP init for document %p", this));
#endif
return NS_OK;
}
nsAutoCString tCspHeaderValue, tCspROHeaderValue;
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel);
if (httpChannel) {
httpChannel->GetResponseHeader(
NS_LITERAL_CSTRING("content-security-policy"),
tCspHeaderValue);
httpChannel->GetResponseHeader(
NS_LITERAL_CSTRING("content-security-policy-report-only"),
tCspROHeaderValue);
}
NS_ConvertASCIItoUTF16 cspHeaderValue(tCspHeaderValue);
NS_ConvertASCIItoUTF16 cspROHeaderValue(tCspROHeaderValue);
// Figure out if we need to apply an app default CSP or a CSP from an app manifest
nsIPrincipal* principal = NodePrincipal();
uint16_t appStatus = principal->GetAppStatus();
bool applyAppDefaultCSP = false;
bool applyAppManifestCSP = false;
nsAutoString appManifestCSP;
nsAutoString appDefaultCSP;
if (appStatus != nsIPrincipal::APP_STATUS_NOT_INSTALLED) {
nsCOMPtr<nsIAppsService> appsService = do_GetService(APPS_SERVICE_CONTRACTID);
if (appsService) {
uint32_t appId = 0;
if (NS_SUCCEEDED(principal->GetAppId(&appId))) {
appsService->GetManifestCSPByLocalId(appId, appManifestCSP);
if (!appManifestCSP.IsEmpty()) {
applyAppManifestCSP = true;
}
appsService->GetDefaultCSPByLocalId(appId, appDefaultCSP);
if (!appDefaultCSP.IsEmpty()) {
applyAppDefaultCSP = true;
}
}
}
}
// Check if this is part of the Loop/Hello service
bool applyLoopCSP = IsLoopDocument(aChannel);
// If there's no CSP to apply, go ahead and return early
if (!applyAppDefaultCSP &&
!applyAppManifestCSP &&
!applyLoopCSP &&
cspHeaderValue.IsEmpty() &&
cspROHeaderValue.IsEmpty()) {
#ifdef PR_LOGGING
nsCOMPtr<nsIURI> chanURI;
aChannel->GetURI(getter_AddRefs(chanURI));
nsAutoCString aspec;
chanURI->GetAsciiSpec(aspec);
PR_LOG(gCspPRLog, PR_LOG_DEBUG,
("no CSP for document, %s, %s",
aspec.get(),
applyAppDefaultCSP ? "is app" : "not an app"));
#endif
return NS_OK;
}
#ifdef PR_LOGGING
PR_LOG(gCspPRLog, PR_LOG_DEBUG, ("Document is an app or CSP header specified %p", this));
#endif
nsresult rv;
// If Document is an app check to see if we already set CSP and return early
// if that is indeed the case.
//
// In general (see bug 947831), we should not be setting CSP on a principal
// that aliases another document. For non-app code this is not a problem
// since we only share the underlying principal with nested browsing
// contexts for which a header cannot be set (e.g., about:blank and
// about:srcodoc iframes) and thus won't try to set the CSP again. This
// check ensures that we do not try to set CSP for an app.
if (applyAppDefaultCSP || applyAppManifestCSP) {
nsCOMPtr<nsIContentSecurityPolicy> csp;
rv = principal->GetCsp(getter_AddRefs(csp));
NS_ENSURE_SUCCESS(rv, rv);
if (csp) {
#ifdef PR_LOGGING
PR_LOG(gCspPRLog, PR_LOG_DEBUG, ("%s %s %s",
"This document is sharing principal with another document.",
"Since the document is an app, CSP was already set.",
"Skipping attempt to set CSP."));
#endif
return NS_OK;
}
}
csp = do_CreateInstance("@mozilla.org/cspcontext;1", &rv);
if (NS_FAILED(rv)) {
#ifdef PR_LOGGING
PR_LOG(gCspPRLog, PR_LOG_DEBUG, ("Failed to create CSP object: %x", rv));
#endif
return rv;
}
// used as a "self" identifier for the CSP.
nsCOMPtr<nsIURI> selfURI;
aChannel->GetURI(getter_AddRefs(selfURI));
// Store the request context for violation reports
csp->SetRequestContext(nullptr, nullptr, aChannel);
// ----- if the doc is an app and we want a default CSP, apply it.
if (applyAppDefaultCSP) {
csp->AppendPolicy(appDefaultCSP, false);
}
// ----- if the doc is an app and specifies a CSP in its manifest, apply it.
if (applyAppManifestCSP) {
csp->AppendPolicy(appManifestCSP, false);
}
// ----- if the doc is part of Loop, apply the loop CSP
if (applyLoopCSP) {
nsAdoptingString loopCSP;
loopCSP = Preferences::GetString("loop.CSP");
NS_ASSERTION(loopCSP, "Missing loop.CSP preference");
// If the pref has been removed, we continue without setting a CSP
if (loopCSP) {
csp->AppendPolicy(loopCSP, false);
}
}
// ----- if there's a full-strength CSP header, apply it.
if (!cspHeaderValue.IsEmpty()) {
rv = AppendCSPFromHeader(csp, cspHeaderValue, false);
NS_ENSURE_SUCCESS(rv, rv);
}
// ----- if there's a report-only CSP header, apply it.
if (!cspROHeaderValue.IsEmpty()) {
rv = AppendCSPFromHeader(csp, cspROHeaderValue, true);
NS_ENSURE_SUCCESS(rv, rv);
}
// ----- Enforce frame-ancestor policy on any applied policies
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
if (docShell) {
bool safeAncestry = false;
// PermitsAncestry sends violation reports when necessary
rv = csp->PermitsAncestry(docShell, &safeAncestry);
if (NS_FAILED(rv) || !safeAncestry) {
#ifdef PR_LOGGING
PR_LOG(gCspPRLog, PR_LOG_DEBUG,
("CSP doesn't like frame's ancestry, not loading."));
#endif
// stop! ERROR page!
aChannel->Cancel(NS_ERROR_CSP_FRAME_ANCESTOR_VIOLATION);
}
}
// ----- Set up any Referrer Policy specified by CSP
bool hasReferrerPolicy = false;
uint32_t referrerPolicy = mozilla::net::RP_Default;
rv = csp->GetReferrerPolicy(&referrerPolicy, &hasReferrerPolicy);
NS_ENSURE_SUCCESS(rv, rv);
if (hasReferrerPolicy) {
// Referrer policy spec (section 6.1) says that once the referrer policy
// is set, any future attempts to change it result in No-Referrer.
if (!mReferrerPolicySet) {
mReferrerPolicy = static_cast<ReferrerPolicy>(referrerPolicy);
mReferrerPolicySet = true;
} else if (mReferrerPolicy != referrerPolicy) {
mReferrerPolicy = mozilla::net::RP_No_Referrer;
#ifdef PR_LOGGING
{
PR_LOG(gCspPRLog, PR_LOG_DEBUG, ("%s %s",
"CSP wants to set referrer, but nsDocument"
"already has it set. No referrers will be sent"));
}
#endif
}
// Referrer Policy is set separately for the speculative parser in
// nsHTMLDocument::StartDocumentLoad() so there's nothing to do here for
// speculative loads.
}
rv = principal->SetCsp(csp);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef PR_LOGGING
PR_LOG(gCspPRLog, PR_LOG_DEBUG,
("Inserted CSP into principal %p", principal));
#endif
return NS_OK;
}
void
nsDocument::StopDocumentLoad()
{
if (mParser) {
mParserAborted = true;
mParser->Terminate();
}
}
void
nsDocument::SetDocumentURI(nsIURI* aURI)
{
nsCOMPtr<nsIURI> oldBase = GetDocBaseURI();
mDocumentURI = NS_TryToMakeImmutable(aURI);
nsIURI* newBase = GetDocBaseURI();
bool equalBases = false;
// Changing just the ref of a URI does not change how relative URIs would
// resolve wrt to it, so we can treat the bases as equal as long as they're
// equal ignoring the ref.
if (oldBase && newBase) {
oldBase->EqualsExceptRef(newBase, &equalBases);
}
else {
equalBases = !oldBase && !newBase;
}
// If this is the first time we're setting the document's URI, set the
// document's original URI.
if (!mOriginalURI)
mOriginalURI = mDocumentURI;
// If changing the document's URI changed the base URI of the document, we
// need to refresh the hrefs of all the links on the page.
if (!equalBases) {
RefreshLinkHrefs();
}
}
void
nsDocument::SetChromeXHRDocURI(nsIURI* aURI)
{
mChromeXHRDocURI = aURI;
}
void
nsDocument::SetChromeXHRDocBaseURI(nsIURI* aURI)
{
mChromeXHRDocBaseURI = aURI;
}
NS_IMETHODIMP
nsDocument::GetLastModified(nsAString& aLastModified)
{
nsIDocument::GetLastModified(aLastModified);
return NS_OK;
}
void
nsIDocument::GetLastModified(nsAString& aLastModified) const
{
if (!mLastModified.IsEmpty()) {
aLastModified.Assign(mLastModified);
} else {
// If we for whatever reason failed to find the last modified time
// (or even the current time), fall back to what NS4.x returned.
aLastModified.AssignLiteral(MOZ_UTF16("01/01/1970 00:00:00"));
}
}
void
nsDocument::AddToNameTable(Element *aElement, nsIAtom* aName)
{
MOZ_ASSERT(nsGenericHTMLElement::ShouldExposeNameAsHTMLDocumentProperty(aElement),
"Only put elements that need to be exposed as document['name'] in "
"the named table.");
nsIdentifierMapEntry *entry =
mIdentifierMap.PutEntry(nsDependentAtomString(aName));
// Null for out-of-memory
if (entry) {
if (!entry->HasNameElement() &&
!entry->HasIdElementExposedAsHTMLDocumentProperty()) {
++mExpandoAndGeneration.generation;
}
entry->AddNameElement(this, aElement);
}
}
void
nsDocument::RemoveFromNameTable(Element *aElement, nsIAtom* aName)
{
// Speed up document teardown
if (mIdentifierMap.Count() == 0)
return;
nsIdentifierMapEntry *entry =
mIdentifierMap.GetEntry(nsDependentAtomString(aName));
if (!entry) // Could be false if the element was anonymous, hence never added
return;
entry->RemoveNameElement(aElement);
if (!entry->HasNameElement() &&
!entry->HasIdElementExposedAsHTMLDocumentProperty()) {
++mExpandoAndGeneration.generation;
}
}
void
nsDocument::AddToIdTable(Element *aElement, nsIAtom* aId)
{
nsIdentifierMapEntry *entry =
mIdentifierMap.PutEntry(nsDependentAtomString(aId));
if (entry) { /* True except on OOM */
if (nsGenericHTMLElement::ShouldExposeIdAsHTMLDocumentProperty(aElement) &&
!entry->HasNameElement() &&
!entry->HasIdElementExposedAsHTMLDocumentProperty()) {
++mExpandoAndGeneration.generation;
}
entry->AddIdElement(aElement);
}
}
void
nsDocument::RemoveFromIdTable(Element *aElement, nsIAtom* aId)
{
NS_ASSERTION(aId, "huhwhatnow?");
// Speed up document teardown
if (mIdentifierMap.Count() == 0) {
return;
}
nsIdentifierMapEntry *entry =
mIdentifierMap.GetEntry(nsDependentAtomString(aId));
if (!entry) // Can be null for XML elements with changing ids.
return;
entry->RemoveIdElement(aElement);
if (nsGenericHTMLElement::ShouldExposeIdAsHTMLDocumentProperty(aElement) &&
!entry->HasNameElement() &&
!entry->HasIdElementExposedAsHTMLDocumentProperty()) {
++mExpandoAndGeneration.generation;
}
if (entry->IsEmpty()) {
mIdentifierMap.RawRemoveEntry(entry);
}
}
nsIPrincipal*
nsDocument::GetPrincipal()
{
return NodePrincipal();
}
extern bool sDisablePrefetchHTTPSPref;
void
nsDocument::SetPrincipal(nsIPrincipal *aNewPrincipal)
{
if (aNewPrincipal && mAllowDNSPrefetch && sDisablePrefetchHTTPSPref) {
nsCOMPtr<nsIURI> uri;
aNewPrincipal->GetURI(getter_AddRefs(uri));
bool isHTTPS;
if (!uri || NS_FAILED(uri->SchemeIs("https", &isHTTPS)) ||
isHTTPS) {
mAllowDNSPrefetch = false;
}
}
mNodeInfoManager->SetDocumentPrincipal(aNewPrincipal);
}
NS_IMETHODIMP
nsDocument::GetApplicationCache(nsIApplicationCache **aApplicationCache)
{
NS_IF_ADDREF(*aApplicationCache = mApplicationCache);
return NS_OK;
}
NS_IMETHODIMP
nsDocument::SetApplicationCache(nsIApplicationCache *aApplicationCache)
{
mApplicationCache = aApplicationCache;
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetContentType(nsAString& aContentType)
{
CopyUTF8toUTF16(GetContentTypeInternal(), aContentType);
return NS_OK;
}
void
nsDocument::SetContentType(const nsAString& aContentType)
{
NS_ASSERTION(GetContentTypeInternal().IsEmpty() ||
GetContentTypeInternal().Equals(NS_ConvertUTF16toUTF8(aContentType)),
"Do you really want to change the content-type?");
SetContentTypeInternal(NS_ConvertUTF16toUTF8(aContentType));
}
nsresult
nsDocument::GetAllowPlugins(bool * aAllowPlugins)
{
// First, we ask our docshell if it allows plugins.
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
if (docShell) {
docShell->GetAllowPlugins(aAllowPlugins);
// If the docshell allows plugins, we check whether
// we are sandboxed and plugins should not be allowed.
if (*aAllowPlugins)
*aAllowPlugins = !(mSandboxFlags & SANDBOXED_PLUGINS);
}
return NS_OK;
}
already_AddRefed<UndoManager>
nsDocument::GetUndoManager()
{
Element* rootElement = GetRootElement();
if (!rootElement) {
return nullptr;
}
if (!mUndoManager) {
mUndoManager = new UndoManager(rootElement);
}
nsRefPtr<UndoManager> undoManager = mUndoManager;
return undoManager.forget();
}
AnimationTimeline*
nsDocument::Timeline()
{
if (!mAnimationTimeline) {
mAnimationTimeline = new AnimationTimeline(this);
}
return mAnimationTimeline;
}
/* Return true if the document is in the focused top-level window, and is an
* ancestor of the focused DOMWindow. */
NS_IMETHODIMP
nsDocument::HasFocus(bool* aResult)
{
ErrorResult rv;
*aResult = nsIDocument::HasFocus(rv);
return rv.ErrorCode();
}
bool
nsIDocument::HasFocus(ErrorResult& rv) const
{
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
rv.Throw(NS_ERROR_NOT_AVAILABLE);
return false;
}
// Is there a focused DOMWindow?
nsCOMPtr<nsIDOMWindow> focusedWindow;
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
if (!focusedWindow) {
return false;
}
// Are we an ancestor of the focused DOMWindow?
nsCOMPtr<nsIDOMDocument> domDocument;
focusedWindow->GetDocument(getter_AddRefs(domDocument));
nsCOMPtr<nsIDocument> document = do_QueryInterface(domDocument);
for (nsIDocument* currentDoc = document; currentDoc;
currentDoc = currentDoc->GetParentDocument()) {
if (currentDoc == this) {
// Yes, we are an ancestor
return true;
}
}
return false;
}
NS_IMETHODIMP
nsDocument::GetReferrer(nsAString& aReferrer)
{
nsIDocument::GetReferrer(aReferrer);
return NS_OK;
}
void
nsIDocument::GetReferrer(nsAString& aReferrer) const
{
if (mIsSrcdocDocument && mParentDocument)
mParentDocument->GetReferrer(aReferrer);
else
CopyUTF8toUTF16(mReferrer, aReferrer);
}
nsresult
nsIDocument::GetSrcdocData(nsAString &aSrcdocData)
{
if (mIsSrcdocDocument) {
nsCOMPtr<nsIInputStreamChannel> inStrmChan = do_QueryInterface(mChannel);
if (inStrmChan) {
return inStrmChan->GetSrcdocData(aSrcdocData);
}
}
aSrcdocData = NullString();
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetActiveElement(nsIDOMElement **aElement)
{
nsCOMPtr<nsIDOMElement> el(do_QueryInterface(nsIDocument::GetActiveElement()));
el.forget(aElement);
return NS_OK;
}
Element*
nsIDocument::GetActiveElement()
{
// Get the focused element.
nsCOMPtr<nsPIDOMWindow> window = GetWindow();
if (window) {
nsCOMPtr<nsPIDOMWindow> focusedWindow;
nsIContent* focusedContent =
nsFocusManager::GetFocusedDescendant(window, false,
getter_AddRefs(focusedWindow));
// be safe and make sure the element is from this document
if (focusedContent && focusedContent->OwnerDoc() == this) {
if (focusedContent->ChromeOnlyAccess()) {
focusedContent = focusedContent->FindFirstNonChromeOnlyAccessContent();
}
if (focusedContent) {
return focusedContent->AsElement();
}
}
}
// No focused element anywhere in this document. Try to get the BODY.
nsRefPtr<nsHTMLDocument> htmlDoc = AsHTMLDocument();
if (htmlDoc) {
// Because of IE compatibility, return null when html document doesn't have
// a body.
return htmlDoc->GetBody();
}
// If we couldn't get a BODY, return the root element.
return GetDocumentElement();
}
NS_IMETHODIMP
nsDocument::GetCurrentScript(nsIDOMElement **aElement)
{
nsCOMPtr<nsIDOMElement> el(do_QueryInterface(nsIDocument::GetCurrentScript()));
el.forget(aElement);
return NS_OK;
}
Element*
nsIDocument::GetCurrentScript()
{
nsCOMPtr<Element> el(do_QueryInterface(ScriptLoader()->GetCurrentScript()));
return el;
}
NS_IMETHODIMP
nsDocument::ElementFromPoint(float aX, float aY, nsIDOMElement** aReturn)
{
Element* el = nsIDocument::ElementFromPoint(aX, aY);
nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(el);
retval.forget(aReturn);
return NS_OK;
}
Element*
nsIDocument::ElementFromPoint(float aX, float aY)
{
return ElementFromPointHelper(aX, aY, false, true);
}
Element*
nsDocument::ElementFromPointHelper(float aX, float aY,
bool aIgnoreRootScrollFrame,
bool aFlushLayout)
{
// As per the the spec, we return null if either coord is negative
if (!aIgnoreRootScrollFrame && (aX < 0 || aY < 0)) {
return nullptr;
}
nscoord x = nsPresContext::CSSPixelsToAppUnits(aX);
nscoord y = nsPresContext::CSSPixelsToAppUnits(aY);
nsPoint pt(x, y);
// Make sure the layout information we get is up-to-date, and
// ensure we get a root frame (for everything but XUL)
if (aFlushLayout)
FlushPendingNotifications(Flush_Layout);
nsIPresShell *ps = GetShell();
if (!ps) {
return nullptr;
}
nsIFrame *rootFrame = ps->GetRootFrame();
// XUL docs, unlike HTML, have no frame tree until everything's done loading
if (!rootFrame) {
return nullptr; // return null to premature XUL callers as a reminder to wait
}
nsIFrame *ptFrame = nsLayoutUtils::GetFrameForPoint(rootFrame, pt,
nsLayoutUtils::IGNORE_PAINT_SUPPRESSION | nsLayoutUtils::IGNORE_CROSS_DOC |
(aIgnoreRootScrollFrame ? nsLayoutUtils::IGNORE_ROOT_SCROLL_FRAME : 0));
if (!ptFrame) {
return nullptr;
}
nsIContent* elem = GetContentInThisDocument(ptFrame);
if (elem && !elem->IsElement()) {
elem = elem->GetParent();
}
return elem ? elem->AsElement() : nullptr;
}
nsresult
nsDocument::NodesFromRectHelper(float aX, float aY,
float aTopSize, float aRightSize,
float aBottomSize, float aLeftSize,
bool aIgnoreRootScrollFrame,
bool aFlushLayout,
nsIDOMNodeList** aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
nsSimpleContentList* elements = new nsSimpleContentList(this);
NS_ADDREF(elements);
*aReturn = elements;
// Following the same behavior of elementFromPoint,
// we don't return anything if either coord is negative
if (!aIgnoreRootScrollFrame && (aX < 0 || aY < 0))
return NS_OK;
nscoord x = nsPresContext::CSSPixelsToAppUnits(aX - aLeftSize);
nscoord y = nsPresContext::CSSPixelsToAppUnits(aY - aTopSize);
nscoord w = nsPresContext::CSSPixelsToAppUnits(aLeftSize + aRightSize) + 1;
nscoord h = nsPresContext::CSSPixelsToAppUnits(aTopSize + aBottomSize) + 1;
nsRect rect(x, y, w, h);
// Make sure the layout information we get is up-to-date, and
// ensure we get a root frame (for everything but XUL)
if (aFlushLayout) {
FlushPendingNotifications(Flush_Layout);
}
nsIPresShell *ps = GetShell();
NS_ENSURE_STATE(ps);
nsIFrame *rootFrame = ps->GetRootFrame();
// XUL docs, unlike HTML, have no frame tree until everything's done loading
if (!rootFrame)
return NS_OK; // return nothing to premature XUL callers as a reminder to wait
nsAutoTArray<nsIFrame*,8> outFrames;
nsLayoutUtils::GetFramesForArea(rootFrame, rect, outFrames,
nsLayoutUtils::IGNORE_PAINT_SUPPRESSION | nsLayoutUtils::IGNORE_CROSS_DOC |
(aIgnoreRootScrollFrame ? nsLayoutUtils::IGNORE_ROOT_SCROLL_FRAME : 0));
// Used to filter out repeated elements in sequence.
nsIContent* lastAdded = nullptr;
for (uint32_t i = 0; i < outFrames.Length(); i++) {
nsIContent* node = GetContentInThisDocument(outFrames[i]);
if (node && !node->IsElement() && !node->IsNodeOfType(nsINode::eTEXT)) {
// We have a node that isn't an element or a text node,
// use its parent content instead.
node = node->GetParent();
}
if (node && node != lastAdded) {
elements->AppendElement(node);
lastAdded = node;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetElementsByClassName(const nsAString& aClasses,
nsIDOMNodeList** aReturn)
{
*aReturn = nsIDocument::GetElementsByClassName(aClasses).take();
return NS_OK;
}
already_AddRefed<nsContentList>
nsIDocument::GetElementsByClassName(const nsAString& aClasses)
{
return nsContentUtils::GetElementsByClassName(this, aClasses);
}
NS_IMETHODIMP
nsDocument::ReleaseCapture()
{
nsIDocument::ReleaseCapture();
return NS_OK;
}
void
nsIDocument::ReleaseCapture() const
{
// only release the capture if the caller can access it. This prevents a
// page from stopping a scrollbar grab for example.
nsCOMPtr<nsINode> node = nsIPresShell::GetCapturingContent();
if (node && nsContentUtils::CanCallerAccess(node)) {
nsIPresShell::SetCapturingContent(nullptr, 0);
}
}
already_AddRefed<nsIURI>
nsIDocument::GetBaseURI(bool aTryUseXHRDocBaseURI) const
{
nsCOMPtr<nsIURI> uri;
if (aTryUseXHRDocBaseURI && mChromeXHRDocBaseURI) {
uri = mChromeXHRDocBaseURI;
} else {
uri = GetDocBaseURI();
}
return uri.forget();
}
nsresult
nsDocument::SetBaseURI(nsIURI* aURI)
{
if (!aURI && !mDocumentBaseURI) {
return NS_OK;
}
// Don't do anything if the URI wasn't actually changed.
if (aURI && mDocumentBaseURI) {
bool equalBases = false;
mDocumentBaseURI->Equals(aURI, &equalBases);
if (equalBases) {
return NS_OK;
}
}
// Check if CSP allows this base-uri
nsCOMPtr<nsIContentSecurityPolicy> csp;
nsresult rv = NodePrincipal()->GetCsp(getter_AddRefs(csp));
NS_ENSURE_SUCCESS(rv, rv);
if (csp) {
bool permitsBaseURI = false;
// base-uri is only enforced if explicitly defined in the
// policy - do *not* consult default-src, see:
// http://www.w3.org/TR/CSP2/#directive-default-src
rv = csp->Permits(aURI, nsIContentSecurityPolicy::BASE_URI_DIRECTIVE,
true, &permitsBaseURI);
NS_ENSURE_SUCCESS(rv, rv);
if (!permitsBaseURI) {
return NS_OK;
}
}
if (aURI) {
mDocumentBaseURI = NS_TryToMakeImmutable(aURI);
} else {
mDocumentBaseURI = nullptr;
}
RefreshLinkHrefs();
return NS_OK;
}
void
nsDocument::GetBaseTarget(nsAString &aBaseTarget)
{
aBaseTarget = mBaseTarget;
}
void
nsDocument::SetDocumentCharacterSet(const nsACString& aCharSetID)
{
// XXX it would be a good idea to assert the sanity of the argument,
// but before we figure out what to do about non-Encoding Standard
// encodings in the charset menu and in mailnews, assertions are futile.
if (!mCharacterSet.Equals(aCharSetID)) {
if (mMasterDocument && !aCharSetID.EqualsLiteral("UTF-8")) {
// Imports are always UTF-8
return;
}
mCharacterSet = aCharSetID;
int32_t n = mCharSetObservers.Length();
for (int32_t i = 0; i < n; i++) {
nsIObserver* observer = mCharSetObservers.ElementAt(i);
observer->Observe(static_cast<nsIDocument *>(this), "charset",
NS_ConvertASCIItoUTF16(aCharSetID).get());
}
}
}
nsresult
nsDocument::AddCharSetObserver(nsIObserver* aObserver)
{
NS_ENSURE_ARG_POINTER(aObserver);
NS_ENSURE_TRUE(mCharSetObservers.AppendElement(aObserver), NS_ERROR_FAILURE);
return NS_OK;
}
void
nsDocument::RemoveCharSetObserver(nsIObserver* aObserver)
{
mCharSetObservers.RemoveElement(aObserver);
}
void
nsDocument::GetHeaderData(nsIAtom* aHeaderField, nsAString& aData) const
{
aData.Truncate();
const nsDocHeaderData* data = mHeaderData;
while (data) {
if (data->mField == aHeaderField) {
aData = data->mData;
break;
}
data = data->mNext;
}
}
void
nsDocument::SetHeaderData(nsIAtom* aHeaderField, const nsAString& aData)
{
if (!aHeaderField) {
NS_ERROR("null headerField");
return;
}
if (!mHeaderData) {
if (!aData.IsEmpty()) { // don't bother storing empty string
mHeaderData = new nsDocHeaderData(aHeaderField, aData);
}
}
else {
nsDocHeaderData* data = mHeaderData;
nsDocHeaderData** lastPtr = &mHeaderData;
bool found = false;
do { // look for existing and replace
if (data->mField == aHeaderField) {
if (!aData.IsEmpty()) {
data->mData.Assign(aData);
}
else { // don't store empty string
*lastPtr = data->mNext;
data->mNext = nullptr;
delete data;
}
found = true;
break;
}
lastPtr = &(data->mNext);
data = *lastPtr;
} while (data);
if (!aData.IsEmpty() && !found) {
// didn't find, append
*lastPtr = new nsDocHeaderData(aHeaderField, aData);
}
}
if (aHeaderField == nsGkAtoms::headerContentLanguage) {
CopyUTF16toUTF8(aData, mContentLanguage);
}
if (aHeaderField == nsGkAtoms::headerDefaultStyle) {
// Only mess with our stylesheets if we don't have a lastStyleSheetSet, per
// spec.
if (DOMStringIsNull(mLastStyleSheetSet)) {
// Calling EnableStyleSheetsForSetInternal, not SetSelectedStyleSheetSet,
// per spec. The idea here is that we're changing our preferred set and
// that shouldn't change the value of lastStyleSheetSet. Also, we're
// using the Internal version so we can update the CSSLoader and not have
// to worry about null strings.
EnableStyleSheetsForSetInternal(aData, true);
}
}
if (aHeaderField == nsGkAtoms::refresh) {
// We get into this code before we have a script global yet, so get to
// our container via mDocumentContainer.
nsCOMPtr<nsIRefreshURI> refresher(mDocumentContainer);
if (refresher) {
// Note: using mDocumentURI instead of mBaseURI here, for consistency
// (used to just use the current URI of our webnavigation, but that
// should really be the same thing). Note that this code can run
// before the current URI of the webnavigation has been updated, so we
// can't assert equality here.
refresher->SetupRefreshURIFromHeader(mDocumentURI, NodePrincipal(),
NS_ConvertUTF16toUTF8(aData));
}
}
if (aHeaderField == nsGkAtoms::headerDNSPrefetchControl &&
mAllowDNSPrefetch) {
// Chromium treats any value other than 'on' (case insensitive) as 'off'.
mAllowDNSPrefetch = aData.IsEmpty() || aData.LowerCaseEqualsLiteral("on");
}
if (aHeaderField == nsGkAtoms::viewport ||
aHeaderField == nsGkAtoms::handheldFriendly ||
aHeaderField == nsGkAtoms::viewport_minimum_scale ||
aHeaderField == nsGkAtoms::viewport_maximum_scale ||
aHeaderField == nsGkAtoms::viewport_initial_scale ||
aHeaderField == nsGkAtoms::viewport_height ||
aHeaderField == nsGkAtoms::viewport_width ||
aHeaderField == nsGkAtoms::viewport_user_scalable) {
mViewportType = Unknown;
}
// Referrer policy spec says to ignore any empty referrer policies.
if (aHeaderField == nsGkAtoms::referrer && !aData.IsEmpty()) {
ReferrerPolicy policy = mozilla::net::ReferrerPolicyFromString(aData);
// Referrer policy spec (section 6.1) says that once the referrer policy
// is set, any future attempts to change it result in No-Referrer.
if (!mReferrerPolicySet) {
mReferrerPolicy = policy;
mReferrerPolicySet = true;
} else if (mReferrerPolicy != policy) {
mReferrerPolicy = mozilla::net::RP_No_Referrer;
}
}
}
void
nsDocument::TryChannelCharset(nsIChannel *aChannel,
int32_t& aCharsetSource,
nsACString& aCharset,
nsHtml5TreeOpExecutor* aExecutor)
{
if (aChannel) {
nsAutoCString charsetVal;
nsresult rv = aChannel->GetContentCharset(charsetVal);
if (NS_SUCCEEDED(rv)) {
nsAutoCString preferred;
if(EncodingUtils::FindEncodingForLabel(charsetVal, preferred)) {
aCharset = preferred;
aCharsetSource = kCharsetFromChannel;
return;
} else if (aExecutor && !charsetVal.IsEmpty()) {
aExecutor->ComplainAboutBogusProtocolCharset(this);
}
}
}
}
already_AddRefed<nsIPresShell>
nsDocument::CreateShell(nsPresContext* aContext, nsViewManager* aViewManager,
nsStyleSet* aStyleSet)
{
// Don't add anything here. Add it to |doCreateShell| instead.
// This exists so that subclasses can pass other values for the 4th
// parameter some of the time.
return doCreateShell(aContext, aViewManager, aStyleSet,
eCompatibility_FullStandards);
}
already_AddRefed<nsIPresShell>
nsDocument::doCreateShell(nsPresContext* aContext,
nsViewManager* aViewManager, nsStyleSet* aStyleSet,
nsCompatibility aCompatMode)
{
NS_ASSERTION(!mPresShell, "We have a presshell already!");
NS_ENSURE_FALSE(GetBFCacheEntry(), nullptr);
FillStyleSet(aStyleSet);
nsRefPtr<PresShell> shell = new PresShell;
shell->Init(this, aContext, aViewManager, aStyleSet, aCompatMode);
// Note: we don't hold a ref to the shell (it holds a ref to us)
mPresShell = shell;
// Make sure to never paint if we belong to an invisible DocShell.
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
if (docShell && docShell->IsInvisible())
shell->SetNeverPainting(true);
mExternalResourceMap.ShowViewers();
MaybeRescheduleAnimationFrameNotifications();
return shell.forget();
}
void
nsDocument::MaybeRescheduleAnimationFrameNotifications()
{
if (!mPresShell || !IsEventHandlingEnabled()) {
// bail out for now, until one of those conditions changes
return;
}
nsRefreshDriver* rd = mPresShell->GetPresContext()->RefreshDriver();
if (!mFrameRequestCallbacks.IsEmpty()) {
rd->ScheduleFrameRequestCallbacks(this);
}
}
void
nsIDocument::TakeFrameRequestCallbacks(FrameRequestCallbackList& aCallbacks)
{
aCallbacks.AppendElements(mFrameRequestCallbacks);
mFrameRequestCallbacks.Clear();
}
PLDHashOperator RequestDiscardEnumerator(imgIRequest* aKey,
uint32_t aData,
void* userArg)
{
aKey->RequestDiscard();
return PL_DHASH_NEXT;
}
void
nsDocument::DeleteShell()
{
mExternalResourceMap.HideViewers();
if (IsEventHandlingEnabled()) {
RevokeAnimationFrameNotifications();
}
// When our shell goes away, request that all our images be immediately
// discarded, so we don't carry around decoded image data for a document we
// no longer intend to paint.
mImageTracker.EnumerateRead(RequestDiscardEnumerator, nullptr);
mPresShell = nullptr;
}
void
nsDocument::RevokeAnimationFrameNotifications()
{
if (!mFrameRequestCallbacks.IsEmpty()) {
mPresShell->GetPresContext()->RefreshDriver()->
RevokeFrameRequestCallbacks(this);
}
}
static void
SubDocClearEntry(PLDHashTable *table, PLDHashEntryHdr *entry)
{
SubDocMapEntry *e = static_cast<SubDocMapEntry *>(entry);
NS_RELEASE(e->mKey);
if (e->mSubDocument) {
e->mSubDocument->SetParentDocument(nullptr);
NS_RELEASE(e->mSubDocument);
}
}
static bool
SubDocInitEntry(PLDHashTable *table, PLDHashEntryHdr *entry, const void *key)
{
SubDocMapEntry *e =
const_cast<SubDocMapEntry *>
(static_cast<const SubDocMapEntry *>(entry));
e->mKey = const_cast<Element*>(static_cast<const Element*>(key));
NS_ADDREF(e->mKey);
e->mSubDocument = nullptr;
return true;
}
nsresult
nsDocument::SetSubDocumentFor(Element* aElement, nsIDocument* aSubDoc)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_UNEXPECTED);
if (!aSubDoc) {
// aSubDoc is nullptr, remove the mapping
if (mSubDocuments) {
SubDocMapEntry *entry =
static_cast<SubDocMapEntry*>
(PL_DHashTableOperate(mSubDocuments, aElement,
PL_DHASH_LOOKUP));
if (PL_DHASH_ENTRY_IS_BUSY(entry)) {
PL_DHashTableRawRemove(mSubDocuments, entry);
}
}
} else {
if (!mSubDocuments) {
// Create a new hashtable
static const PLDHashTableOps hash_table_ops =
{
PL_DHashAllocTable,
PL_DHashFreeTable,
PL_DHashVoidPtrKeyStub,
PL_DHashMatchEntryStub,
PL_DHashMoveEntryStub,
SubDocClearEntry,
PL_DHashFinalizeStub,
SubDocInitEntry
};
mSubDocuments = PL_NewDHashTable(&hash_table_ops, nullptr,
sizeof(SubDocMapEntry));
if (!mSubDocuments) {
return NS_ERROR_OUT_OF_MEMORY;
}
}
// Add a mapping to the hash table
SubDocMapEntry *entry =
static_cast<SubDocMapEntry*>
(PL_DHashTableOperate(mSubDocuments, aElement,
PL_DHASH_ADD));
if (!entry) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (entry->mSubDocument) {
entry->mSubDocument->SetParentDocument(nullptr);
// Release the old sub document
NS_RELEASE(entry->mSubDocument);
}
entry->mSubDocument = aSubDoc;
NS_ADDREF(entry->mSubDocument);
aSubDoc->SetParentDocument(this);
}
return NS_OK;
}
nsIDocument*
nsDocument::GetSubDocumentFor(nsIContent *aContent) const
{
if (mSubDocuments && aContent->IsElement()) {
SubDocMapEntry *entry =
static_cast<SubDocMapEntry*>
(PL_DHashTableOperate(mSubDocuments, aContent->AsElement(),
PL_DHASH_LOOKUP));
if (PL_DHASH_ENTRY_IS_BUSY(entry)) {
return entry->mSubDocument;
}
}
return nullptr;
}
static PLDHashOperator
FindContentEnumerator(PLDHashTable *table, PLDHashEntryHdr *hdr,
uint32_t number, void *arg)
{
SubDocMapEntry *entry = static_cast<SubDocMapEntry*>(hdr);
FindContentData *data = static_cast<FindContentData*>(arg);
if (entry->mSubDocument == data->mSubDocument) {
data->mResult = entry->mKey;
return PL_DHASH_STOP;
}
return PL_DHASH_NEXT;
}
Element*
nsDocument::FindContentForSubDocument(nsIDocument *aDocument) const
{
NS_ENSURE_TRUE(aDocument, nullptr);
if (!mSubDocuments) {
return nullptr;
}
FindContentData data(aDocument);
PL_DHashTableEnumerate(mSubDocuments, FindContentEnumerator, &data);
return data.mResult;
}
bool
nsDocument::IsNodeOfType(uint32_t aFlags) const
{
return !(aFlags & ~eDOCUMENT);
}
Element*
nsIDocument::GetRootElement() const
{
return (mCachedRootElement && mCachedRootElement->GetParentNode() == this) ?
mCachedRootElement : GetRootElementInternal();
}
Element*
nsDocument::GetRootElementInternal() const
{
// Loop backwards because any non-elements, such as doctypes and PIs
// are likely to appear before the root element.
uint32_t i;
for (i = mChildren.ChildCount(); i > 0; --i) {
nsIContent* child = mChildren.ChildAt(i - 1);
if (child->IsElement()) {
const_cast<nsDocument*>(this)->mCachedRootElement = child->AsElement();
return child->AsElement();
}
}
const_cast<nsDocument*>(this)->mCachedRootElement = nullptr;
return nullptr;
}
nsIContent *
nsDocument::GetChildAt(uint32_t aIndex) const
{
return mChildren.GetSafeChildAt(aIndex);
}
int32_t
nsDocument::IndexOf(const nsINode* aPossibleChild) const
{
return mChildren.IndexOfChild(aPossibleChild);
}
uint32_t
nsDocument::GetChildCount() const
{
return mChildren.ChildCount();
}
nsIContent * const *
nsDocument::GetChildArray(uint32_t* aChildCount) const
{
return mChildren.GetChildArray(aChildCount);
}
nsresult
nsDocument::InsertChildAt(nsIContent* aKid, uint32_t aIndex,
bool aNotify)
{
if (aKid->IsElement() && GetRootElement()) {
NS_WARNING("Inserting root element when we already have one");
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
}
return doInsertChildAt(aKid, aIndex, aNotify, mChildren);
}
void
nsDocument::RemoveChildAt(uint32_t aIndex, bool aNotify)
{
nsCOMPtr<nsIContent> oldKid = GetChildAt(aIndex);
if (!oldKid) {
return;
}
if (oldKid->IsElement()) {
// Destroy the link map up front before we mess with the child list.
DestroyElementMaps();
}
doRemoveChildAt(aIndex, aNotify, oldKid, mChildren);
mCachedRootElement = nullptr;
}
void
nsDocument::EnsureOnDemandBuiltInUASheet(CSSStyleSheet* aSheet)
{
// Contains() takes nsISupport*, so annoyingly we have to cast here
if (mOnDemandBuiltInUASheets.Contains(static_cast<nsIStyleSheet*>(aSheet))) {
return;
}
BeginUpdate(UPDATE_STYLE);
AddOnDemandBuiltInUASheet(aSheet);
EndUpdate(UPDATE_STYLE);
}
void
nsDocument::AddOnDemandBuiltInUASheet(CSSStyleSheet* aSheet)
{
// Contains() takes nsISupport*, so annoyingly we have to cast here
MOZ_ASSERT(!mOnDemandBuiltInUASheets.Contains(static_cast<nsIStyleSheet*>(aSheet)));
// Prepend here so that we store the sheets in mOnDemandBuiltInUASheets in
// the same order that they should end up in the style set.
mOnDemandBuiltInUASheets.InsertElementAt(0, aSheet);
if (aSheet->IsApplicable()) {
// This is like |AddStyleSheetToStyleSets|, but for an agent sheet.
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
// Note that prepending here is necessary to make sure that html.css etc.
// do not override Firefox OS/Mobile's content.css sheet. Maybe we should
// have an insertion point to match the order of
// nsDocumentViewer::CreateStyleSet though?
shell->StyleSet()->PrependStyleSheet(nsStyleSet::eAgentSheet, aSheet);
}
}
NotifyStyleSheetAdded(aSheet, false);
}
int32_t
nsDocument::GetNumberOfStyleSheets() const
{
return mStyleSheets.Count();
}
nsIStyleSheet*
nsDocument::GetStyleSheetAt(int32_t aIndex) const
{
NS_ENSURE_TRUE(0 <= aIndex && aIndex < mStyleSheets.Count(), nullptr);
return mStyleSheets[aIndex];
}
int32_t
nsDocument::GetIndexOfStyleSheet(nsIStyleSheet* aSheet) const
{
return mStyleSheets.IndexOf(aSheet);
}
void
nsDocument::AddStyleSheetToStyleSets(nsIStyleSheet* aSheet)
{
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
shell->StyleSet()->AddDocStyleSheet(aSheet, this);
}
}
#define DO_STYLESHEET_NOTIFICATION(className, type, memberName, argName) \
do { \
nsRefPtr<CSSStyleSheet> cssSheet = do_QueryObject(aSheet); \
if (!cssSheet) { \
return; \
} \
\
className##Init init; \
init.mBubbles = true; \
init.mCancelable = true; \
init.mStylesheet = cssSheet; \
init.memberName = argName; \
\
nsRefPtr<className> event = \
className::Constructor(this, NS_LITERAL_STRING(type), init); \
event->SetTrusted(true); \
event->SetTarget(this); \
nsRefPtr<AsyncEventDispatcher> asyncDispatcher = \
new AsyncEventDispatcher(this, event); \
asyncDispatcher->mDispatchChromeOnly = true; \
asyncDispatcher->PostDOMEvent(); \
} while (0);
void
nsDocument::NotifyStyleSheetAdded(nsIStyleSheet* aSheet, bool aDocumentSheet)
{
NS_DOCUMENT_NOTIFY_OBSERVERS(StyleSheetAdded, (this, aSheet, aDocumentSheet));
if (StyleSheetChangeEventsEnabled()) {
DO_STYLESHEET_NOTIFICATION(StyleSheetChangeEvent,
"StyleSheetAdded",
mDocumentSheet,
aDocumentSheet);
}
}
void
nsDocument::NotifyStyleSheetRemoved(nsIStyleSheet* aSheet, bool aDocumentSheet)
{
NS_DOCUMENT_NOTIFY_OBSERVERS(StyleSheetRemoved, (this, aSheet, aDocumentSheet));
if (StyleSheetChangeEventsEnabled()) {
DO_STYLESHEET_NOTIFICATION(StyleSheetChangeEvent,
"StyleSheetRemoved",
mDocumentSheet,
aDocumentSheet);
}
}
void
nsDocument::AddStyleSheet(nsIStyleSheet* aSheet)
{
NS_PRECONDITION(aSheet, "null arg");
mStyleSheets.AppendObject(aSheet);
aSheet->SetOwningDocument(this);
if (aSheet->IsApplicable()) {
AddStyleSheetToStyleSets(aSheet);
}
NotifyStyleSheetAdded(aSheet, true);
}
void
nsDocument::RemoveStyleSheetFromStyleSets(nsIStyleSheet* aSheet)
{
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
shell->StyleSet()->RemoveDocStyleSheet(aSheet);
}
}
void
nsDocument::RemoveStyleSheet(nsIStyleSheet* aSheet)
{
NS_PRECONDITION(aSheet, "null arg");
nsCOMPtr<nsIStyleSheet> sheet = aSheet; // hold ref so it won't die too soon
if (!mStyleSheets.RemoveObject(aSheet)) {
NS_ASSERTION(mInUnlinkOrDeletion, "stylesheet not found");
return;
}
if (!mIsGoingAway) {
if (aSheet->IsApplicable()) {
RemoveStyleSheetFromStyleSets(aSheet);
}
NotifyStyleSheetRemoved(aSheet, true);
}
aSheet->SetOwningDocument(nullptr);
}
void
nsDocument::UpdateStyleSheets(nsCOMArray<nsIStyleSheet>& aOldSheets,
nsCOMArray<nsIStyleSheet>& aNewSheets)
{
BeginUpdate(UPDATE_STYLE);
// XXX Need to set the sheet on the ownernode, if any
NS_PRECONDITION(aOldSheets.Count() == aNewSheets.Count(),
"The lists must be the same length!");
int32_t count = aOldSheets.Count();
nsCOMPtr<nsIStyleSheet> oldSheet;
int32_t i;
for (i = 0; i < count; ++i) {
oldSheet = aOldSheets[i];
// First remove the old sheet.
NS_ASSERTION(oldSheet, "None of the old sheets should be null");
int32_t oldIndex = mStyleSheets.IndexOf(oldSheet);
RemoveStyleSheet(oldSheet); // This does the right notifications
// Now put the new one in its place. If it's null, just ignore it.
nsIStyleSheet* newSheet = aNewSheets[i];
if (newSheet) {
mStyleSheets.InsertObjectAt(newSheet, oldIndex);
newSheet->SetOwningDocument(this);
if (newSheet->IsApplicable()) {
AddStyleSheetToStyleSets(newSheet);
}
NotifyStyleSheetAdded(newSheet, true);
}
}
EndUpdate(UPDATE_STYLE);
}
void
nsDocument::InsertStyleSheetAt(nsIStyleSheet* aSheet, int32_t aIndex)
{
NS_PRECONDITION(aSheet, "null ptr");
mStyleSheets.InsertObjectAt(aSheet, aIndex);
aSheet->SetOwningDocument(this);
if (aSheet->IsApplicable()) {
AddStyleSheetToStyleSets(aSheet);
}
NotifyStyleSheetAdded(aSheet, true);
}
void
nsDocument::SetStyleSheetApplicableState(nsIStyleSheet* aSheet,
bool aApplicable)
{
NS_PRECONDITION(aSheet, "null arg");
// If we're actually in the document style sheet list
if (-1 != mStyleSheets.IndexOf(aSheet)) {
if (aApplicable) {
AddStyleSheetToStyleSets(aSheet);
} else {
RemoveStyleSheetFromStyleSets(aSheet);
}
}
// We have to always notify, since this will be called for sheets
// that are children of sheets in our style set, as well as some
// sheets for nsHTMLEditor.
NS_DOCUMENT_NOTIFY_OBSERVERS(StyleSheetApplicableStateChanged,
(this, aSheet, aApplicable));
if (StyleSheetChangeEventsEnabled()) {
DO_STYLESHEET_NOTIFICATION(StyleSheetApplicableStateChangeEvent,
"StyleSheetApplicableStateChanged",
mApplicable,
aApplicable);
}
if (!mSSApplicableStateNotificationPending) {
nsRefPtr<nsIRunnable> notification = NS_NewRunnableMethod(this,
&nsDocument::NotifyStyleSheetApplicableStateChanged);
mSSApplicableStateNotificationPending =
NS_SUCCEEDED(NS_DispatchToCurrentThread(notification));
}
}
void
nsDocument::NotifyStyleSheetApplicableStateChanged()
{
mSSApplicableStateNotificationPending = false;
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService) {
observerService->NotifyObservers(static_cast<nsIDocument*>(this),
"style-sheet-applicable-state-changed",
nullptr);
}
}
static nsStyleSet::sheetType
ConvertAdditionalSheetType(nsIDocument::additionalSheetType aType)
{
switch(aType) {
case nsIDocument::eAgentSheet:
return nsStyleSet::eAgentSheet;
case nsIDocument::eUserSheet:
return nsStyleSet::eUserSheet;
case nsIDocument::eAuthorSheet:
return nsStyleSet::eDocSheet;
default:
NS_ASSERTION(false, "wrong type");
// we must return something although this should never happen
return nsStyleSet::eSheetTypeCount;
}
}
static int32_t
FindSheet(const nsCOMArray<nsIStyleSheet>& aSheets, nsIURI* aSheetURI)
{
for (int32_t i = aSheets.Count() - 1; i >= 0; i-- ) {
bool bEqual;
nsIURI* uri = aSheets[i]->GetSheetURI();
if (uri && NS_SUCCEEDED(uri->Equals(aSheetURI, &bEqual)) && bEqual)
return i;
}
return -1;
}
nsresult
nsDocument::LoadAdditionalStyleSheet(additionalSheetType aType, nsIURI* aSheetURI)
{
NS_PRECONDITION(aSheetURI, "null arg");
// Checking if we have loaded this one already.
if (FindSheet(mAdditionalSheets[aType], aSheetURI) >= 0)
return NS_ERROR_INVALID_ARG;
// Loading the sheet sync.
nsRefPtr<mozilla::css::Loader> loader = new mozilla::css::Loader();
nsRefPtr<CSSStyleSheet> sheet;
nsresult rv = loader->LoadSheetSync(aSheetURI, aType == eAgentSheet,
true, getter_AddRefs(sheet));
NS_ENSURE_SUCCESS(rv, rv);
sheet->SetOwningDocument(this);
MOZ_ASSERT(sheet->IsApplicable());
return AddAdditionalStyleSheet(aType, sheet);
}
nsresult
nsDocument::AddAdditionalStyleSheet(additionalSheetType aType, nsIStyleSheet* aSheet)
{
if (mAdditionalSheets[aType].Contains(aSheet))
return NS_ERROR_INVALID_ARG;
if (!aSheet->IsApplicable())
return NS_ERROR_INVALID_ARG;
mAdditionalSheets[aType].AppendObject(aSheet);
BeginUpdate(UPDATE_STYLE);
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
nsStyleSet::sheetType type = ConvertAdditionalSheetType(aType);
shell->StyleSet()->AppendStyleSheet(type, aSheet);
}
// Passing false, so documet.styleSheets.length will not be affected by
// these additional sheets.
NotifyStyleSheetAdded(aSheet, false);
EndUpdate(UPDATE_STYLE);
return NS_OK;
}
void
nsDocument::RemoveAdditionalStyleSheet(additionalSheetType aType, nsIURI* aSheetURI)
{
MOZ_ASSERT(aSheetURI);
nsCOMArray<nsIStyleSheet>& sheets = mAdditionalSheets[aType];
int32_t i = FindSheet(mAdditionalSheets[aType], aSheetURI);
if (i >= 0) {
nsCOMPtr<nsIStyleSheet> sheetRef = sheets[i];
sheets.RemoveObjectAt(i);
BeginUpdate(UPDATE_STYLE);
if (!mIsGoingAway) {
MOZ_ASSERT(sheetRef->IsApplicable());
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
nsStyleSet::sheetType type = ConvertAdditionalSheetType(aType);
shell->StyleSet()->RemoveStyleSheet(type, sheetRef);
}
}
// Passing false, so documet.styleSheets.length will not be affected by
// these additional sheets.
NotifyStyleSheetRemoved(sheetRef, false);
EndUpdate(UPDATE_STYLE);
sheetRef->SetOwningDocument(nullptr);
}
}
nsIStyleSheet*
nsDocument::FirstAdditionalAuthorSheet()
{
return mAdditionalSheets[eAuthorSheet].SafeObjectAt(0);
}
nsIGlobalObject*
nsDocument::GetScopeObject() const
{
nsCOMPtr<nsIGlobalObject> scope(do_QueryReferent(mScopeObject));
return scope;
}
void
nsDocument::SetScopeObject(nsIGlobalObject* aGlobal)
{
mScopeObject = do_GetWeakReference(aGlobal);
if (aGlobal) {
mHasHadScriptHandlingObject = true;
}
}
#ifdef MOZ_EME
static void
CheckIfContainsEMEContent(nsISupports* aSupports, void* aContainsEME)
{
nsCOMPtr<nsIDOMHTMLMediaElement> domMediaElem(do_QueryInterface(aSupports));
if (domMediaElem) {
nsCOMPtr<nsIContent> content(do_QueryInterface(domMediaElem));
MOZ_ASSERT(content, "aSupports is not a content");
HTMLMediaElement* mediaElem = static_cast<HTMLMediaElement*>(content.get());
bool* contains = static_cast<bool*>(aContainsEME);
if (mediaElem->GetMediaKeys()) {
*contains = true;
}
}
}
bool
nsDocument::ContainsEMEContent()
{
bool containsEME = false;
EnumerateActivityObservers(CheckIfContainsEMEContent,
static_cast<void*>(&containsEME));
return containsEME;
}
#endif // MOZ_EME
static void
NotifyActivityChanged(nsISupports *aSupports, void *aUnused)
{
nsCOMPtr<nsIDOMHTMLMediaElement> domMediaElem(do_QueryInterface(aSupports));
if (domMediaElem) {
nsCOMPtr<nsIContent> content(do_QueryInterface(domMediaElem));
MOZ_ASSERT(content, "aSupports is not a content");
HTMLMediaElement* mediaElem = static_cast<HTMLMediaElement*>(content.get());
mediaElem->NotifyOwnerDocumentActivityChanged();
}
nsCOMPtr<nsIObjectLoadingContent> objectLoadingContent(do_QueryInterface(aSupports));
if (objectLoadingContent) {
nsObjectLoadingContent* olc = static_cast<nsObjectLoadingContent*>(objectLoadingContent.get());
olc->NotifyOwnerDocumentActivityChanged();
}
nsCOMPtr<nsIDocumentActivity> objectDocumentActivity(do_QueryInterface(aSupports));
if (objectDocumentActivity) {
objectDocumentActivity->NotifyOwnerDocumentActivityChanged();
}
}
void
nsIDocument::SetContainer(nsDocShell* aContainer)
{
if (aContainer) {
mDocumentContainer = aContainer;
} else {
mDocumentContainer = WeakPtr<nsDocShell>();
}
EnumerateActivityObservers(NotifyActivityChanged, nullptr);
if (!aContainer) {
return;
}
// Get the Docshell
if (aContainer->ItemType() == nsIDocShellTreeItem::typeContent) {
// check if same type root
nsCOMPtr<nsIDocShellTreeItem> sameTypeRoot;
aContainer->GetSameTypeRootTreeItem(getter_AddRefs(sameTypeRoot));
NS_ASSERTION(sameTypeRoot, "No document shell root tree item from document shell tree item!");
if (sameTypeRoot == aContainer) {
static_cast<nsDocument*>(this)->SetIsTopLevelContentDocument(true);
}
}
}
nsISupports*
nsIDocument::GetContainer() const
{
return static_cast<nsIDocShell*>(mDocumentContainer);
}
void
nsDocument::SetScriptGlobalObject(nsIScriptGlobalObject *aScriptGlobalObject)
{
#ifdef DEBUG
{
nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aScriptGlobalObject));
NS_ASSERTION(!win || win->IsInnerWindow(),
"Script global object must be an inner window!");
}
#endif
NS_ABORT_IF_FALSE(aScriptGlobalObject || !mAnimationController ||
mAnimationController->IsPausedByType(
nsSMILTimeContainer::PAUSE_PAGEHIDE |
nsSMILTimeContainer::PAUSE_BEGIN),
"Clearing window pointer while animations are unpaused");
if (mScriptGlobalObject && !aScriptGlobalObject) {
// We're detaching from the window. We need to grab a pointer to
// our layout history state now.
mLayoutHistoryState = GetLayoutHistoryState();
if (mPresShell && !EventHandlingSuppressed()) {
RevokeAnimationFrameNotifications();
}
// Also make sure to remove our onload blocker now if we haven't done it yet
if (mOnloadBlockCount != 0) {
nsCOMPtr<nsILoadGroup> loadGroup = GetDocumentLoadGroup();
if (loadGroup) {
loadGroup->RemoveRequest(mOnloadBlocker, nullptr, NS_OK);
}
}
}
mScriptGlobalObject = aScriptGlobalObject;
if (aScriptGlobalObject) {
mHasHadScriptHandlingObject = true;
mHasHadDefaultView = true;
// Go back to using the docshell for the layout history state
mLayoutHistoryState = nullptr;
mScopeObject = do_GetWeakReference(aScriptGlobalObject);
#ifdef DEBUG
if (!mWillReparent) {
// We really shouldn't have a wrapper here but if we do we need to make sure
// it has the correct parent.
JSObject *obj = GetWrapperPreserveColor();
if (obj) {
JSObject *newScope = aScriptGlobalObject->GetGlobalJSObject();
NS_ASSERTION(js::GetGlobalForObjectCrossCompartment(obj) == newScope,
"Wrong scope, this is really bad!");
}
}
#endif
if (mAllowDNSPrefetch) {
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
if (docShell) {
#ifdef DEBUG
nsCOMPtr<nsIWebNavigation> webNav =
do_GetInterface(aScriptGlobalObject);
NS_ASSERTION(SameCOMIdentity(webNav, docShell),
"Unexpected container or script global?");
#endif
bool allowDNSPrefetch;
docShell->GetAllowDNSPrefetch(&allowDNSPrefetch);
mAllowDNSPrefetch = allowDNSPrefetch;
}
}
MaybeRescheduleAnimationFrameNotifications();
mRegistry = new Registry();
}
// Remember the pointer to our window (or lack there of), to avoid
// having to QI every time it's asked for.
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(mScriptGlobalObject);
mWindow = window;
// Now that we know what our window is, we can flush the CSP errors to the
// Web Console. We are flushing all messages that occured and were stored
// in the queue prior to this point.
FlushCSPWebConsoleErrorQueue();
nsCOMPtr<nsIHttpChannelInternal> internalChannel =
do_QueryInterface(GetChannel());
if (internalChannel) {
nsCOMArray<nsISecurityConsoleMessage> messages;
internalChannel->TakeAllSecurityMessages(messages);
SendToConsole(messages);
}
// Set our visibility state, but do not fire the event. This is correct
// because either we're coming out of bfcache (in which case IsVisible() will
// still test false at this point and no state change will happen) or we're
// doing the initial document load and don't want to fire the event for this
// change.
mVisibilityState = GetVisibilityState();
// The global in the template contents owner document should be the same.
if (mTemplateContentsOwner && mTemplateContentsOwner != this) {
mTemplateContentsOwner->SetScriptGlobalObject(aScriptGlobalObject);
}
nsCOMPtr<nsIChannel> channel = GetChannel();
if (!mMaybeServiceWorkerControlled && channel) {
nsLoadFlags loadFlags = 0;
channel->GetLoadFlags(&loadFlags);
// If we are shift-reloaded, don't associate with a ServiceWorker.
// FIXME(nsm): Bug 1041339.
if (loadFlags & nsIRequest::LOAD_BYPASS_CACHE) {
NS_WARNING("Page was shift reloaded, skipping ServiceWorker control");
return;
}
nsCOMPtr<nsIServiceWorkerManager> swm = mozilla::services::GetServiceWorkerManager();
if (swm) {
swm->MaybeStartControlling(this);
mMaybeServiceWorkerControlled = true;
}
}
}
nsIScriptGlobalObject*
nsDocument::GetScriptHandlingObjectInternal() const
{
MOZ_ASSERT(!mScriptGlobalObject,
"Do not call this when mScriptGlobalObject is set!");
if (mHasHadDefaultView) {
return nullptr;
}
nsCOMPtr<nsIScriptGlobalObject> scriptHandlingObject =
do_QueryReferent(mScopeObject);
nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(scriptHandlingObject);
if (win) {
NS_ASSERTION(win->IsInnerWindow(), "Should have inner window here!");
nsPIDOMWindow* outer = win->GetOuterWindow();
if (!outer || outer->GetCurrentInnerWindow() != win) {
NS_WARNING("Wrong inner/outer window combination!");
return nullptr;
}
}
return scriptHandlingObject;
}
void
nsDocument::SetScriptHandlingObject(nsIScriptGlobalObject* aScriptObject)
{
NS_ASSERTION(!mScriptGlobalObject ||
mScriptGlobalObject == aScriptObject,
"Wrong script object!");
nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aScriptObject);
NS_ASSERTION(!win || win->IsInnerWindow(), "Should have inner window here!");
if (aScriptObject) {
mScopeObject = do_GetWeakReference(aScriptObject);
mHasHadScriptHandlingObject = true;
mHasHadDefaultView = false;
}
}
bool
nsDocument::IsTopLevelContentDocument()
{
return mIsTopLevelContentDocument;
}
void
nsDocument::SetIsTopLevelContentDocument(bool aIsTopLevelContentDocument)
{
mIsTopLevelContentDocument = aIsTopLevelContentDocument;
}
nsPIDOMWindow *
nsDocument::GetWindowInternal() const
{
MOZ_ASSERT(!mWindow, "This should not be called when mWindow is not null!");
// Let's use mScriptGlobalObject. Even if the document is already removed from
// the docshell, the outer window might be still obtainable from the it.
nsCOMPtr<nsPIDOMWindow> win;
if (mRemovedFromDocShell) {
// The docshell returns the outer window we are done.
nsCOMPtr<nsIDocShell> kungfuDeathGrip(mDocumentContainer);
if (mDocumentContainer) {
win = mDocumentContainer->GetWindow();
}
} else {
win = do_QueryInterface(mScriptGlobalObject);
if (win) {
// mScriptGlobalObject is always the inner window, let's get the outer.
win = win->GetOuterWindow();
}
}
return win;
}
nsScriptLoader*
nsDocument::ScriptLoader()
{
return mScriptLoader;
}
bool
nsDocument::InternalAllowXULXBL()
{
if (nsContentUtils::AllowXULXBLForPrincipal(NodePrincipal())) {
mAllowXULXBL = eTriTrue;
return true;
}
mAllowXULXBL = eTriFalse;
return false;
}
// Note: We don't hold a reference to the document observer; we assume
// that it has a live reference to the document.
void
nsDocument::AddObserver(nsIDocumentObserver* aObserver)
{
NS_ASSERTION(mObservers.IndexOf(aObserver) == nsTArray<int>::NoIndex,
"Observer already in the list");
mObservers.AppendElement(aObserver);
AddMutationObserver(aObserver);
}
bool
nsDocument::RemoveObserver(nsIDocumentObserver* aObserver)
{
// If we're in the process of destroying the document (and we're
// informing the observers of the destruction), don't remove the
// observers from the list. This is not a big deal, since we
// don't hold a live reference to the observers.
if (!mInDestructor) {
RemoveMutationObserver(aObserver);
return mObservers.RemoveElement(aObserver);
}
return mObservers.Contains(aObserver);
}
void
nsDocument::MaybeEndOutermostXBLUpdate()
{
// Only call BindingManager()->EndOutermostUpdate() when
// we're not in an update and it is safe to run scripts.
if (mUpdateNestLevel == 0 && mInXBLUpdate) {
if (nsContentUtils::IsSafeToRunScript()) {
mInXBLUpdate = false;
BindingManager()->EndOutermostUpdate();
} else if (!mInDestructor) {
nsContentUtils::AddScriptRunner(
NS_NewRunnableMethod(this, &nsDocument::MaybeEndOutermostXBLUpdate));
}
}
}
void
nsDocument::BeginUpdate(nsUpdateType aUpdateType)
{
if (mUpdateNestLevel == 0 && !mInXBLUpdate) {
mInXBLUpdate = true;
BindingManager()->BeginOutermostUpdate();
}
++mUpdateNestLevel;
nsContentUtils::AddScriptBlocker();
NS_DOCUMENT_NOTIFY_OBSERVERS(BeginUpdate, (this, aUpdateType));
}
void
nsDocument::EndUpdate(nsUpdateType aUpdateType)
{
NS_DOCUMENT_NOTIFY_OBSERVERS(EndUpdate, (this, aUpdateType));
nsContentUtils::RemoveScriptBlocker();
--mUpdateNestLevel;
// This set of updates may have created XBL bindings. Let the
// binding manager know we're done.
MaybeEndOutermostXBLUpdate();
MaybeInitializeFinalizeFrameLoaders();
}
void
nsDocument::BeginLoad()
{
// Block onload here to prevent having to deal with blocking and
// unblocking it while we know the document is loading.
BlockOnload();
mDidFireDOMContentLoaded = false;
BlockDOMContentLoaded();
if (mScriptLoader) {
mScriptLoader->BeginDeferringScripts();
}
NS_DOCUMENT_NOTIFY_OBSERVERS(BeginLoad, (this));
}
void
nsDocument::ReportEmptyGetElementByIdArg()
{
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("DOM"), this,
nsContentUtils::eDOM_PROPERTIES,
"EmptyGetElementByIdParam");
}
Element*
nsDocument::GetElementById(const nsAString& aElementId)
{
if (!CheckGetElementByIdArg(aElementId)) {
return nullptr;
}
nsIdentifierMapEntry *entry = mIdentifierMap.GetEntry(aElementId);
return entry ? entry->GetIdElement() : nullptr;
}
const nsSmallVoidArray*
nsDocument::GetAllElementsForId(const nsAString& aElementId) const
{
if (aElementId.IsEmpty()) {
return nullptr;
}
nsIdentifierMapEntry *entry = mIdentifierMap.GetEntry(aElementId);
return entry ? entry->GetIdElements() : nullptr;
}
NS_IMETHODIMP
nsDocument::GetElementById(const nsAString& aId, nsIDOMElement** aReturn)
{
Element *content = GetElementById(aId);
if (content) {
return CallQueryInterface(content, aReturn);
}
*aReturn = nullptr;
return NS_OK;
}
Element*
nsDocument::AddIDTargetObserver(nsIAtom* aID, IDTargetObserver aObserver,
void* aData, bool aForImage)
{
nsDependentAtomString id(aID);
if (!CheckGetElementByIdArg(id))
return nullptr;
nsIdentifierMapEntry *entry = mIdentifierMap.PutEntry(id);
NS_ENSURE_TRUE(entry, nullptr);
entry->AddContentChangeCallback(aObserver, aData, aForImage);
return aForImage ? entry->GetImageIdElement() : entry->GetIdElement();
}
void
nsDocument::RemoveIDTargetObserver(nsIAtom* aID, IDTargetObserver aObserver,
void* aData, bool aForImage)
{
nsDependentAtomString id(aID);
if (!CheckGetElementByIdArg(id))
return;
nsIdentifierMapEntry *entry = mIdentifierMap.GetEntry(id);
if (!entry) {
return;
}
entry->RemoveContentChangeCallback(aObserver, aData, aForImage);
}
NS_IMETHODIMP
nsDocument::MozSetImageElement(const nsAString& aImageElementId,
nsIDOMElement* aImageElement)
{
nsCOMPtr<Element> el = do_QueryInterface(aImageElement);
MozSetImageElement(aImageElementId, el);
return NS_OK;
}
void
nsDocument::MozSetImageElement(const nsAString& aImageElementId,
Element* aElement)
{
if (aImageElementId.IsEmpty())
return;
// Hold a script blocker while calling SetImageElement since that can call
// out to id-observers
nsAutoScriptBlocker scriptBlocker;
nsIdentifierMapEntry *entry = mIdentifierMap.PutEntry(aImageElementId);
if (entry) {
entry->SetImageElement(aElement);
if (entry->IsEmpty()) {
mIdentifierMap.RemoveEntry(aImageElementId);
}
}
}
Element*
nsDocument::LookupImageElement(const nsAString& aId)
{
if (aId.IsEmpty())
return nullptr;
nsIdentifierMapEntry *entry = mIdentifierMap.GetEntry(aId);
return entry ? entry->GetImageIdElement() : nullptr;
}
void
nsDocument::DispatchContentLoadedEvents()
{
// If you add early returns from this method, make sure you're
// calling UnblockOnload properly.
// Unpin references to preloaded images
mPreloadingImages.Clear();
if (mTiming) {
mTiming->NotifyDOMContentLoadedStart(nsIDocument::GetDocumentURI());
}
// Dispatch observer notification to notify observers document is interactive.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
nsIPrincipal *principal = GetPrincipal();
os->NotifyObservers(static_cast<nsIDocument*>(this),
nsContentUtils::IsSystemPrincipal(principal) ?
"chrome-document-interactive" :
"content-document-interactive",
nullptr);
// Fire a DOM event notifying listeners that this document has been
// loaded (excluding images and other loads initiated by this
// document).
nsContentUtils::DispatchTrustedEvent(this, static_cast<nsIDocument*>(this),
NS_LITERAL_STRING("DOMContentLoaded"),
true, true);
if (mTiming) {
mTiming->NotifyDOMContentLoadedEnd(nsIDocument::GetDocumentURI());
}
// If this document is a [i]frame, fire a DOMFrameContentLoaded
// event on all parent documents notifying that the HTML (excluding
// other external files such as images and stylesheets) in a frame
// has finished loading.
// target_frame is the [i]frame element that will be used as the
// target for the event. It's the [i]frame whose content is done
// loading.
nsCOMPtr<EventTarget> target_frame;
if (mParentDocument) {
target_frame = mParentDocument->FindContentForSubDocument(this);
}
if (target_frame) {
nsCOMPtr<nsIDocument> parent = mParentDocument;
do {
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(parent);
nsCOMPtr<nsIDOMEvent> event;
if (domDoc) {
domDoc->CreateEvent(NS_LITERAL_STRING("Events"),
getter_AddRefs(event));
}
if (event) {
event->InitEvent(NS_LITERAL_STRING("DOMFrameContentLoaded"), true,
true);
event->SetTarget(target_frame);
event->SetTrusted(true);
// To dispatch this event we must manually call
// EventDispatcher::Dispatch() on the ancestor document since the
// target is not in the same document, so the event would never reach
// the ancestor document if we used the normal event
// dispatching code.
WidgetEvent* innerEvent = event->GetInternalNSEvent();
if (innerEvent) {
nsEventStatus status = nsEventStatus_eIgnore;
nsIPresShell *shell = parent->GetShell();
if (shell) {
nsRefPtr<nsPresContext> context = shell->GetPresContext();
if (context) {
EventDispatcher::Dispatch(parent, context, innerEvent, event,
&status);
}
}
}
}
parent = parent->GetParentDocument();
} while (parent);
}
// If the document has a manifest attribute, fire a MozApplicationManifest
// event.
Element* root = GetRootElement();
if (root && root->HasAttr(kNameSpaceID_None, nsGkAtoms::manifest)) {
nsContentUtils::DispatchChromeEvent(this, static_cast<nsIDocument*>(this),
NS_LITERAL_STRING("MozApplicationManifest"),
true, true);
}
UnblockOnload(true);
}
void
nsDocument::EndLoad()
{
// Drop the ref to our parser, if any, but keep hold of the sink so that we
// can flush it from FlushPendingNotifications as needed. We might have to
// do that to get a StartLayout() to happen.
if (mParser) {
mWeakSink = do_GetWeakReference(mParser->GetContentSink());
mParser = nullptr;
}
NS_DOCUMENT_NOTIFY_OBSERVERS(EndLoad, (this));
UnblockDOMContentLoaded();
}
void
nsDocument::UnblockDOMContentLoaded()
{
MOZ_ASSERT(mBlockDOMContentLoaded);
if (--mBlockDOMContentLoaded != 0 || mDidFireDOMContentLoaded) {
return;
}
mDidFireDOMContentLoaded = true;
MOZ_ASSERT(mReadyState == READYSTATE_INTERACTIVE);
if (!mSynchronousDOMContentLoaded) {
nsRefPtr<nsIRunnable> ev =
NS_NewRunnableMethod(this, &nsDocument::DispatchContentLoadedEvents);
NS_DispatchToCurrentThread(ev);
} else {
DispatchContentLoadedEvents();
}
}
void
nsDocument::ContentStateChanged(nsIContent* aContent, EventStates aStateMask)
{
NS_PRECONDITION(!nsContentUtils::IsSafeToRunScript(),
"Someone forgot a scriptblocker");
NS_DOCUMENT_NOTIFY_OBSERVERS(ContentStateChanged,
(this, aContent, aStateMask));
}
void
nsDocument::DocumentStatesChanged(EventStates aStateMask)
{
// Invalidate our cached state.
mGotDocumentState &= ~aStateMask;
mDocumentState &= ~aStateMask;
NS_DOCUMENT_NOTIFY_OBSERVERS(DocumentStatesChanged, (this, aStateMask));
}
void
nsDocument::StyleRuleChanged(nsIStyleSheet* aSheet,
nsIStyleRule* aOldStyleRule,
nsIStyleRule* aNewStyleRule)
{
NS_DOCUMENT_NOTIFY_OBSERVERS(StyleRuleChanged,
(this, aSheet,
aOldStyleRule, aNewStyleRule));
if (StyleSheetChangeEventsEnabled()) {
nsCOMPtr<css::Rule> rule = do_QueryInterface(aNewStyleRule);
DO_STYLESHEET_NOTIFICATION(StyleRuleChangeEvent,
"StyleRuleChanged",
mRule,
rule ? rule->GetDOMRule() : nullptr);
}
}
void
nsDocument::StyleRuleAdded(nsIStyleSheet* aSheet,
nsIStyleRule* aStyleRule)
{
NS_DOCUMENT_NOTIFY_OBSERVERS(StyleRuleAdded,
(this, aSheet, aStyleRule));
if (StyleSheetChangeEventsEnabled()) {
nsCOMPtr<css::Rule> rule = do_QueryInterface(aStyleRule);
DO_STYLESHEET_NOTIFICATION(StyleRuleChangeEvent,
"StyleRuleAdded",
mRule,
rule ? rule->GetDOMRule() : nullptr);
}
}
void
nsDocument::StyleRuleRemoved(nsIStyleSheet* aSheet,
nsIStyleRule* aStyleRule)
{
NS_DOCUMENT_NOTIFY_OBSERVERS(StyleRuleRemoved,
(this, aSheet, aStyleRule));
if (StyleSheetChangeEventsEnabled()) {
nsCOMPtr<css::Rule> rule = do_QueryInterface(aStyleRule);
DO_STYLESHEET_NOTIFICATION(StyleRuleChangeEvent,
"StyleRuleRemoved",
mRule,
rule ? rule->GetDOMRule() : nullptr);
}
}
#undef DO_STYLESHEET_NOTIFICATION
already_AddRefed<AnonymousContent>
nsIDocument::InsertAnonymousContent(Element& aElement, ErrorResult& aRv)
{
nsIPresShell* shell = GetShell();
if (!shell || !shell->GetCanvasFrame()) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
nsCOMPtr<Element> container = shell->GetCanvasFrame()
->GetCustomContentContainer();
if (!container) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
// Clone the node to avoid returning a direct reference
nsCOMPtr<nsINode> clonedElement = aElement.CloneNode(true, aRv);
if (aRv.Failed()) {
return nullptr;
}
// Insert the element into the container
nsresult rv;
rv = container->AppendChildTo(clonedElement->AsContent(), true);
if (NS_FAILED(rv)) {
return nullptr;
}
nsRefPtr<AnonymousContent> anonymousContent =
new AnonymousContent(clonedElement->AsElement());
mAnonymousContents.AppendElement(anonymousContent);
return anonymousContent.forget();
}
void
nsIDocument::RemoveAnonymousContent(AnonymousContent& aContent,
ErrorResult& aRv)
{
nsIPresShell* shell = GetShell();
if (!shell || !shell->GetCanvasFrame()) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return;
}
nsCOMPtr<Element> container = shell->GetCanvasFrame()
->GetCustomContentContainer();
if (!container) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return;
}
// Iterate over know customContents to get and remove the right one
for (int32_t i = mAnonymousContents.Length() - 1; i >= 0; --i) {
if (mAnonymousContents[i] == &aContent) {
// Get the node from the customContent
nsCOMPtr<Element> node = aContent.GetContentNode();
// Remove the entry in mAnonymousContents
mAnonymousContents.RemoveElementAt(i);
// Remove the node from its container
container->RemoveChild(*node, aRv);
if (aRv.Failed()) {
return;
}
break;
}
}
}
//
// nsIDOMDocument interface
//
DocumentType*
nsIDocument::GetDoctype() const
{
for (nsIContent* child = GetFirstChild();
child;
child = child->GetNextSibling()) {
if (child->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
return static_cast<DocumentType*>(child);
}
}
return nullptr;
}
NS_IMETHODIMP
nsDocument::GetDoctype(nsIDOMDocumentType** aDoctype)
{
MOZ_ASSERT(aDoctype);
nsCOMPtr<nsIDOMDocumentType> doctype = nsIDocument::GetDoctype();
doctype.forget(aDoctype);
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetImplementation(nsIDOMDOMImplementation** aImplementation)
{
ErrorResult rv;
*aImplementation = GetImplementation(rv);
if (rv.Failed()) {
MOZ_ASSERT(!*aImplementation);
return rv.ErrorCode();
}
NS_ADDREF(*aImplementation);
return NS_OK;
}
DOMImplementation*
nsDocument::GetImplementation(ErrorResult& rv)
{
if (!mDOMImplementation) {
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), "about:blank");
if (!uri) {
rv.Throw(NS_ERROR_OUT_OF_MEMORY);
return nullptr;
}
bool hasHadScriptObject = true;
nsIScriptGlobalObject* scriptObject =
GetScriptHandlingObject(hasHadScriptObject);
if (!scriptObject && hasHadScriptObject) {
rv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
mDOMImplementation = new DOMImplementation(this,
scriptObject ? scriptObject : GetScopeObject(), uri, uri);
}
return mDOMImplementation;
}
NS_IMETHODIMP
nsDocument::GetDocumentElement(nsIDOMElement** aDocumentElement)
{
NS_ENSURE_ARG_POINTER(aDocumentElement);
Element* root = GetRootElement();
if (root) {
return CallQueryInterface(root, aDocumentElement);
}
*aDocumentElement = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDocument::CreateElement(const nsAString& aTagName,
nsIDOMElement** aReturn)
{
*aReturn = nullptr;
ErrorResult rv;
nsCOMPtr<Element> element = nsIDocument::CreateElement(aTagName, rv);
NS_ENSURE_FALSE(rv.Failed(), rv.ErrorCode());
return CallQueryInterface(element, aReturn);
}
bool IsLowercaseASCII(const nsAString& aValue)
{
int32_t len = aValue.Length();
for (int32_t i = 0; i < len; ++i) {
char16_t c = aValue[i];
if (!(0x0061 <= (c) && ((c) <= 0x007a))) {
return false;
}
}
return true;
}
already_AddRefed<Element>
nsIDocument::CreateElement(const nsAString& aTagName, ErrorResult& rv)
{
rv = nsContentUtils::CheckQName(aTagName, false);
if (rv.Failed()) {
return nullptr;
}
bool needsLowercase = IsHTML() && !IsLowercaseASCII(aTagName);
nsAutoString lcTagName;
if (needsLowercase) {
nsContentUtils::ASCIIToLower(aTagName, lcTagName);
}
nsCOMPtr<nsIContent> content;
rv = CreateElem(needsLowercase ? lcTagName : aTagName,
nullptr, mDefaultElementType, getter_AddRefs(content));
if (rv.Failed()) {
return nullptr;
}
return dont_AddRef(content.forget().take()->AsElement());
}
void
nsDocument::SetupCustomElement(Element* aElement,
uint32_t aNamespaceID,
const nsAString* aTypeExtension)
{
if (!mRegistry) {
return;
}
nsCOMPtr<nsIAtom> tagAtom = aElement->Tag();
nsCOMPtr<nsIAtom> typeAtom = aTypeExtension ?
do_GetAtom(*aTypeExtension) : tagAtom;
if (aTypeExtension && !aElement->HasAttr(kNameSpaceID_None, nsGkAtoms::is)) {
// Custom element setup in the parser happens after the "is"
// attribute is added.
aElement->SetAttr(kNameSpaceID_None, nsGkAtoms::is, *aTypeExtension, true);
}
CustomElementDefinition* data;
CustomElementHashKey key(aNamespaceID, typeAtom);
if (!mRegistry->mCustomDefinitions.Get(&key, &data)) {
// The type extension doesn't exist in the registry,
// thus we don't need to enqueue callback or adjust
// the "is" attribute, but it is possibly an upgrade candidate.
RegisterUnresolvedElement(aElement, typeAtom);
return;
}
if (data->mLocalName != tagAtom) {
// The element doesn't match the local name for the
// definition, thus the element isn't a custom element
// and we don't need to do anything more.
return;
}
// Enqueuing the created callback will set the CustomElementData on the
// element, causing prototype swizzling to occur in Element::WrapObject.
EnqueueLifecycleCallback(nsIDocument::eCreated, aElement, nullptr, data);
}
already_AddRefed<Element>
nsDocument::CreateElement(const nsAString& aTagName,
const nsAString& aTypeExtension,
ErrorResult& rv)
{
nsRefPtr<Element> elem = nsIDocument::CreateElement(aTagName, rv);
if (rv.Failed()) {
return nullptr;
}
if (!aTagName.Equals(aTypeExtension)) {
// Custom element type can not extend itself.
SetupCustomElement(elem, GetDefaultNamespaceID(), &aTypeExtension);
}
return elem.forget();
}
NS_IMETHODIMP
nsDocument::CreateElementNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
nsIDOMElement** aReturn)
{
*aReturn = nullptr;
ErrorResult rv;
nsCOMPtr<Element> element =
nsIDocument::CreateElementNS(aNamespaceURI, aQualifiedName, rv);
NS_ENSURE_FALSE(rv.Failed(), rv.ErrorCode());
return CallQueryInterface(element, aReturn);
}
already_AddRefed<Element>
nsIDocument::CreateElementNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
ErrorResult& rv)
{
nsRefPtr<mozilla::dom::NodeInfo> nodeInfo;
rv = nsContentUtils::GetNodeInfoFromQName(aNamespaceURI,
aQualifiedName,
mNodeInfoManager,
nsIDOMNode::ELEMENT_NODE,
getter_AddRefs(nodeInfo));
if (rv.Failed()) {
return nullptr;
}
nsCOMPtr<Element> element;
rv = NS_NewElement(getter_AddRefs(element), nodeInfo.forget(),
NOT_FROM_PARSER);
if (rv.Failed()) {
return nullptr;
}
return element.forget();
}
already_AddRefed<Element>
nsDocument::CreateElementNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
const nsAString& aTypeExtension,
ErrorResult& rv)
{
nsRefPtr<Element> elem = nsIDocument::CreateElementNS(aNamespaceURI,
aQualifiedName,
rv);
if (rv.Failed()) {
return nullptr;
}
int32_t nameSpaceId = kNameSpaceID_Wildcard;
if (!aNamespaceURI.EqualsLiteral("*")) {
rv = nsContentUtils::NameSpaceManager()->RegisterNameSpace(aNamespaceURI,
nameSpaceId);
if (rv.Failed()) {
return nullptr;
}
}
if (!aQualifiedName.Equals(aTypeExtension)) {
// A custom element type can not extend itself.
SetupCustomElement(elem, nameSpaceId, &aTypeExtension);
}
return elem.forget();
}
NS_IMETHODIMP
nsDocument::CreateTextNode(const nsAString& aData, nsIDOMText** aReturn)
{
*aReturn = nsIDocument::CreateTextNode(aData).take();
return NS_OK;
}
already_AddRefed<nsTextNode>
nsIDocument::CreateTextNode(const nsAString& aData) const
{
nsRefPtr<nsTextNode> text = new nsTextNode(mNodeInfoManager);
// Don't notify; this node is still being created.
text->SetText(aData, false);
return text.forget();
}
NS_IMETHODIMP
nsDocument::CreateDocumentFragment(nsIDOMDocumentFragment** aReturn)
{
*aReturn = nsIDocument::CreateDocumentFragment().take();
return NS_OK;
}
already_AddRefed<DocumentFragment>
nsIDocument::CreateDocumentFragment() const
{
nsRefPtr<DocumentFragment> frag = new DocumentFragment(mNodeInfoManager);
return frag.forget();
}
NS_IMETHODIMP
nsDocument::CreateComment(const nsAString& aData, nsIDOMComment** aReturn)
{
*aReturn = nsIDocument::CreateComment(aData).take();
return NS_OK;
}
// Unfortunately, bareword "Comment" is ambiguous with some Mac system headers.
already_AddRefed<dom::Comment>
nsIDocument::CreateComment(const nsAString& aData) const
{
nsRefPtr<dom::Comment> comment = new dom::Comment(mNodeInfoManager);
// Don't notify; this node is still being created.
comment->SetText(aData, false);
return comment.forget();
}
NS_IMETHODIMP
nsDocument::CreateCDATASection(const nsAString& aData,
nsIDOMCDATASection** aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
ErrorResult rv;
*aReturn = nsIDocument::CreateCDATASection(aData, rv).take();
return rv.ErrorCode();
}
already_AddRefed<CDATASection>
nsIDocument::CreateCDATASection(const nsAString& aData,
ErrorResult& rv)
{
if (IsHTML()) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
if (FindInReadable(NS_LITERAL_STRING("]]>"), aData)) {
rv.Throw(NS_ERROR_DOM_INVALID_CHARACTER_ERR);
return nullptr;
}
nsRefPtr<CDATASection> cdata = new CDATASection(mNodeInfoManager);
// Don't notify; this node is still being created.
cdata->SetText(aData, false);
return cdata.forget();
}
NS_IMETHODIMP
nsDocument::CreateProcessingInstruction(const nsAString& aTarget,
const nsAString& aData,
nsIDOMProcessingInstruction** aReturn)
{
ErrorResult rv;
*aReturn =
nsIDocument::CreateProcessingInstruction(aTarget, aData, rv).take();
return rv.ErrorCode();
}
already_AddRefed<ProcessingInstruction>
nsIDocument::CreateProcessingInstruction(const nsAString& aTarget,
const nsAString& aData,
ErrorResult& rv) const
{
nsresult res = nsContentUtils::CheckQName(aTarget, false);
if (NS_FAILED(res)) {
rv.Throw(res);
return nullptr;
}
if (FindInReadable(NS_LITERAL_STRING("?>"), aData)) {
rv.Throw(NS_ERROR_DOM_INVALID_CHARACTER_ERR);
return nullptr;
}
nsRefPtr<ProcessingInstruction> pi =
NS_NewXMLProcessingInstruction(mNodeInfoManager, aTarget, aData);
return pi.forget();
}
NS_IMETHODIMP
nsDocument::CreateAttribute(const nsAString& aName,
nsIDOMAttr** aReturn)
{
ErrorResult rv;
*aReturn = nsIDocument::CreateAttribute(aName, rv).take();
return rv.ErrorCode();
}
already_AddRefed<Attr>
nsIDocument::CreateAttribute(const nsAString& aName, ErrorResult& rv)
{
WarnOnceAbout(eCreateAttribute);
if (!mNodeInfoManager) {
rv.Throw(NS_ERROR_NOT_INITIALIZED);
return nullptr;
}
nsresult res = nsContentUtils::CheckQName(aName, false);
if (NS_FAILED(res)) {
rv.Throw(res);
return nullptr;
}
nsRefPtr<mozilla::dom::NodeInfo> nodeInfo;
res = mNodeInfoManager->GetNodeInfo(aName, nullptr, kNameSpaceID_None,
nsIDOMNode::ATTRIBUTE_NODE,
getter_AddRefs(nodeInfo));
if (NS_FAILED(res)) {
rv.Throw(res);
return nullptr;
}
nsRefPtr<Attr> attribute = new Attr(nullptr, nodeInfo.forget(),
EmptyString(), false);
return attribute.forget();
}
NS_IMETHODIMP
nsDocument::CreateAttributeNS(const nsAString & aNamespaceURI,
const nsAString & aQualifiedName,
nsIDOMAttr **aResult)
{
ErrorResult rv;
*aResult =
nsIDocument::CreateAttributeNS(aNamespaceURI, aQualifiedName, rv).take();
return rv.ErrorCode();
}
already_AddRefed<Attr>
nsIDocument::CreateAttributeNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
ErrorResult& rv)
{
WarnOnceAbout(eCreateAttributeNS);
nsRefPtr<mozilla::dom::NodeInfo> nodeInfo;
rv = nsContentUtils::GetNodeInfoFromQName(aNamespaceURI,
aQualifiedName,
mNodeInfoManager,
nsIDOMNode::ATTRIBUTE_NODE,
getter_AddRefs(nodeInfo));
if (rv.Failed()) {
return nullptr;
}
nsRefPtr<Attr> attribute = new Attr(nullptr, nodeInfo.forget(),
EmptyString(), true);
return attribute.forget();
}
bool
nsDocument::CustomElementConstructor(JSContext* aCx, unsigned aArgc, JS::Value* aVp)
{
JS::CallArgs args = JS::CallArgsFromVp(aArgc, aVp);
JS::Rooted<JSObject*> global(aCx,
JS_GetGlobalForObject(aCx, &args.callee()));
nsCOMPtr<nsPIDOMWindow> window = do_QueryWrapper(aCx, global);
MOZ_ASSERT(window, "Should have a non-null window");
nsDocument* document = static_cast<nsDocument*>(window->GetDoc());
// Function name is the type of the custom element.
JSString* jsFunName =
JS_GetFunctionId(JS_ValueToFunction(aCx, args.calleev()));
nsAutoJSString elemName;
if (!elemName.init(aCx, jsFunName)) {
return true;
}
nsCOMPtr<nsIAtom> typeAtom(do_GetAtom(elemName));
CustomElementHashKey key(kNameSpaceID_Unknown, typeAtom);
CustomElementDefinition* definition;
if (!document->mRegistry ||
!document->mRegistry->mCustomDefinitions.Get(&key, &definition)) {
return true;
}
nsDependentAtomString localName(definition->mLocalName);
nsCOMPtr<nsIContent> newElement;
nsresult rv = document->CreateElem(localName, nullptr,
definition->mNamespaceID,
getter_AddRefs(newElement));
NS_ENSURE_SUCCESS(rv, true);
nsCOMPtr<Element> element = do_QueryInterface(newElement);
if (definition->mLocalName != typeAtom) {
// This element is a custom element by extension, thus we need to
// do some special setup. For non-extended custom elements, this happens
// when the element is created.
document->SetupCustomElement(element, definition->mNamespaceID, &elemName);
}
rv = nsContentUtils::WrapNative(aCx, newElement, newElement, args.rval());
NS_ENSURE_SUCCESS(rv, true);
return true;
}
bool
nsDocument::IsWebComponentsEnabled(JSContext* aCx, JSObject* aObject)
{
JS::Rooted<JSObject*> obj(aCx, aObject);
return Preferences::GetBool("dom.webcomponents.enabled") ||
IsInCertifiedApp(aCx, obj);
}
nsresult
nsDocument::RegisterUnresolvedElement(Element* aElement, nsIAtom* aTypeName)
{
if (!mRegistry) {
return NS_OK;
}
mozilla::dom::NodeInfo* info = aElement->NodeInfo();
// Candidate may be a custom element through extension,
// in which case the custom element type name will not
// match the element tag name. e.g. <button is="x-button">.
nsCOMPtr<nsIAtom> typeName = aTypeName;
if (!typeName) {
typeName = info->NameAtom();
}
CustomElementHashKey key(info->NamespaceID(), typeName);
if (mRegistry->mCustomDefinitions.Get(&key)) {
return NS_OK;
}
nsTArray<nsRefPtr<Element>>* unresolved;
mRegistry->mCandidatesMap.Get(&key, &unresolved);
if (!unresolved) {
unresolved = new nsTArray<nsRefPtr<Element>>();
// Ownership of unresolved is taken by mCandidatesMap.
mRegistry->mCandidatesMap.Put(&key, unresolved);
}
nsRefPtr<Element>* elem = unresolved->AppendElement();
*elem = aElement;
return NS_OK;
}
namespace {
class ProcessStackRunner MOZ_FINAL : public nsIRunnable
{
~ProcessStackRunner() {}
public:
explicit ProcessStackRunner(bool aIsBaseQueue = false)
: mIsBaseQueue(aIsBaseQueue)
{
}
NS_DECL_ISUPPORTS
NS_IMETHOD Run() MOZ_OVERRIDE
{
nsDocument::ProcessTopElementQueue(mIsBaseQueue);
return NS_OK;
}
bool mIsBaseQueue;
};
NS_IMPL_ISUPPORTS(ProcessStackRunner, nsIRunnable);
} // anonymous namespace
void
nsDocument::EnqueueLifecycleCallback(nsIDocument::ElementCallbackType aType,
Element* aCustomElement,
LifecycleCallbackArgs* aArgs,
CustomElementDefinition* aDefinition)
{
if (!mRegistry) {
// The element might not belong to a document that
// has a browsing context, and thus no registry.
return;
}
CustomElementData* elementData = aCustomElement->GetCustomElementData();
// Let DEFINITION be ELEMENT's definition
CustomElementDefinition* definition = aDefinition;
if (!definition) {
mozilla::dom::NodeInfo* info = aCustomElement->NodeInfo();
// Make sure we get the correct definition in case the element
// is a extended custom element e.g. <button is="x-button">.
nsCOMPtr<nsIAtom> typeAtom = elementData ?
elementData->mType.get() : info->NameAtom();
CustomElementHashKey key(info->NamespaceID(), typeAtom);
if (!mRegistry->mCustomDefinitions.Get(&key, &definition) ||
definition->mLocalName != info->NameAtom()) {
// Trying to enqueue a callback for an element that is not
// a custom element. We are done, nothing to do.
return;
}
}
if (!elementData) {
// Create the custom element data the first time
// that we try to enqueue a callback.
elementData = new CustomElementData(definition->mType);
// aCustomElement takes ownership of elementData
aCustomElement->SetCustomElementData(elementData);
MOZ_ASSERT(aType == nsIDocument::eCreated,
"First callback should be the created callback");
}
// Let CALLBACK be the callback associated with the key NAME in CALLBACKS.
CallbackFunction* func = nullptr;
switch (aType) {
case nsIDocument::eCreated:
if (definition->mCallbacks->mCreatedCallback.WasPassed()) {
func = definition->mCallbacks->mCreatedCallback.Value();
}
break;
case nsIDocument::eAttached:
if (definition->mCallbacks->mAttachedCallback.WasPassed()) {
func = definition->mCallbacks->mAttachedCallback.Value();
}
break;
case nsIDocument::eDetached:
if (definition->mCallbacks->mDetachedCallback.WasPassed()) {
func = definition->mCallbacks->mDetachedCallback.Value();
}
break;
case nsIDocument::eAttributeChanged:
if (definition->mCallbacks->mAttributeChangedCallback.WasPassed()) {
func = definition->mCallbacks->mAttributeChangedCallback.Value();
}
break;
}
// If there is no such callback, stop.
if (!func) {
return;
}
if (aType == nsIDocument::eCreated) {
elementData->mCreatedCallbackInvoked = false;
} else if (!elementData->mCreatedCallbackInvoked) {
// Callbacks other than created callback must not be enqueued
// until after the created callback has been invoked.
return;
}
// Add CALLBACK to ELEMENT's callback queue.
CustomElementCallback* callback = new CustomElementCallback(aCustomElement,
aType,
func,
elementData);
// Ownership of callback is taken by mCallbackQueue.
elementData->mCallbackQueue.AppendElement(callback);
if (aArgs) {
callback->SetArgs(*aArgs);
}
if (!elementData->mElementIsBeingCreated) {
CustomElementData* lastData =
sProcessingStack->SafeLastElement(nullptr);
// A new element queue needs to be pushed if the queue at the
// top of the stack is associated with another microtask level.
// Don't push a queue for the level 0 microtask (base element queue)
// because we don't want to process the queue until the
// microtask checkpoint.
bool shouldPushElementQueue = nsContentUtils::MicroTaskLevel() > 0 &&
(!lastData || lastData->mAssociatedMicroTask <
static_cast<int32_t>(nsContentUtils::MicroTaskLevel()));
// Push a new element queue onto the processing stack when appropriate
// (when we enter a new microtask).
if (shouldPushElementQueue) {
// Push a sentinel value on the processing stack to mark the
// boundary between the element queues.
sProcessingStack->AppendElement((CustomElementData*) nullptr);
}
sProcessingStack->AppendElement(elementData);
elementData->mAssociatedMicroTask =
static_cast<int32_t>(nsContentUtils::MicroTaskLevel());
// Add a script runner to pop and process the element queue at
// the top of the processing stack.
if (shouldPushElementQueue) {
// Lifecycle callbacks enqueued by user agent implementation
// should be invoked prior to returning control back to script.
// Create a script runner to process the top of the processing
// stack as soon as it is safe to run script.
nsContentUtils::AddScriptRunner(new ProcessStackRunner());
}
}
}
// static
void
nsDocument::ProcessBaseElementQueue()
{
// Prevent re-entrance. Also, if a microtask checkpoint is reached
// and there is no processing stack to process, then we are done.
if (sProcessingBaseElementQueue || !sProcessingStack) {
return;
}
MOZ_ASSERT(nsContentUtils::MicroTaskLevel() == 0);
sProcessingBaseElementQueue = true;
nsContentUtils::AddScriptRunner(new ProcessStackRunner(true));
}
// static
void
nsDocument::ProcessTopElementQueue(bool aIsBaseQueue)
{
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
nsTArray<nsRefPtr<CustomElementData>>& stack = *sProcessingStack;
uint32_t firstQueue = stack.LastIndexOf((CustomElementData*) nullptr);
if (aIsBaseQueue && firstQueue != 0) {
return;
}
for (uint32_t i = firstQueue + 1; i < stack.Length(); ++i) {
// Callback queue may have already been processed in an earlier
// element queue or in an element queue that was popped
// off more recently.
if (stack[i]->mAssociatedMicroTask != -1) {
stack[i]->RunCallbackQueue();
stack[i]->mAssociatedMicroTask = -1;
}
}
// If this was actually the base element queue, don't bother trying to pop
// the first "queue" marker (sentinel).
if (firstQueue != 0) {
stack.SetLength(firstQueue);
} else {
// Don't pop sentinel for base element queue.
stack.SetLength(1);
sProcessingBaseElementQueue = false;
}
}
bool
nsDocument::RegisterEnabled()
{
static bool sPrefValue =
Preferences::GetBool("dom.webcomponents.enabled", false);
return sPrefValue;
}
// static
Maybe<nsTArray<nsRefPtr<mozilla::dom::CustomElementData>>>
nsDocument::sProcessingStack;
// static
bool
nsDocument::sProcessingBaseElementQueue;
void
nsDocument::RegisterElement(JSContext* aCx, const nsAString& aType,
const ElementRegistrationOptions& aOptions,
JS::MutableHandle<JSObject*> aRetval,
ErrorResult& rv)
{
if (!mRegistry) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return;
}
Registry::DefinitionMap& definitions = mRegistry->mCustomDefinitions;
// Unconditionally convert TYPE to lowercase.
nsAutoString lcType;
nsContentUtils::ASCIIToLower(aType, lcType);
// Only convert NAME to lowercase in HTML documents. Note that NAME is
// options.extends.
nsAutoString lcName;
if (IsHTML()) {
nsContentUtils::ASCIIToLower(aOptions.mExtends, lcName);
} else {
lcName.Assign(aOptions.mExtends);
}
nsCOMPtr<nsIAtom> typeAtom(do_GetAtom(lcType));
if (!nsContentUtils::IsCustomElementName(typeAtom)) {
rv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return;
}
// If there already exists a definition with the same TYPE, set ERROR to
// DuplicateDefinition and stop.
// Note that we need to find existing custom elements from either namespace.
CustomElementHashKey duplicateFinder(kNameSpaceID_Unknown, typeAtom);
if (definitions.Get(&duplicateFinder)) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return;
}
nsIGlobalObject* sgo = GetScopeObject();
if (!sgo) {
rv.Throw(NS_ERROR_UNEXPECTED);
return;
}
JS::Rooted<JSObject*> global(aCx, sgo->GetGlobalJSObject());
nsCOMPtr<nsIAtom> nameAtom;
int32_t namespaceID = kNameSpaceID_XHTML;
JS::Rooted<JSObject*> protoObject(aCx);
{
JSAutoCompartment ac(aCx, global);
JS::Handle<JSObject*> htmlProto(
HTMLElementBinding::GetProtoObjectHandle(aCx, global));
if (!htmlProto) {
rv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
if (!aOptions.mPrototype) {
protoObject = JS_NewObject(aCx, nullptr, htmlProto, JS::NullPtr());
if (!protoObject) {
rv.Throw(NS_ERROR_UNEXPECTED);
return;
}
} else {
protoObject = aOptions.mPrototype;
// We are already operating on the document's (/global's) compartment. Let's
// get a view of the passed in proto from this compartment.
if (!JS_WrapObject(aCx, &protoObject)) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return;
}
// We also need an unwrapped version of it for various checks.
JS::Rooted<JSObject*> protoObjectUnwrapped(aCx,
js::CheckedUnwrap(protoObject));
if (!protoObjectUnwrapped) {
// If the documents compartment does not have same origin access
// to the compartment of the proto we should just throw.
rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
// If PROTOTYPE is already an interface prototype object for any interface
// object or PROTOTYPE has a non-configurable property named constructor,
// throw a NotSupportedError and stop.
const js::Class* clasp = js::GetObjectClass(protoObjectUnwrapped);
if (IsDOMIfaceAndProtoClass(clasp)) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return;
}
JS::Rooted<JSPropertyDescriptor> descRoot(aCx);
JS::MutableHandle<JSPropertyDescriptor> desc(&descRoot);
// This check will go through a wrapper, but as we checked above
// it should be transparent or an xray. This should be fine for now,
// until the spec is sorted out.
if (!JS_GetPropertyDescriptor(aCx, protoObject, "constructor", desc)) {
rv.Throw(NS_ERROR_UNEXPECTED);
return;
}
// Check if non-configurable
if (desc.isPermanent()) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return;
}
JS::Handle<JSObject*> svgProto(
SVGElementBinding::GetProtoObjectHandle(aCx, global));
if (!svgProto) {
rv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
JS::Rooted<JSObject*> protoProto(aCx, protoObject);
// If PROTOTYPE's interface inherits from SVGElement, set NAMESPACE to SVG
// Namespace.
while (protoProto) {
if (protoProto == htmlProto) {
break;
}
if (protoProto == svgProto) {
namespaceID = kNameSpaceID_SVG;
break;
}
if (!JS_GetPrototype(aCx, protoProto, &protoProto)) {
rv.Throw(NS_ERROR_UNEXPECTED);
return;
}
}
}
// If name was provided and not null...
if (!lcName.IsEmpty()) {
// Let BASE be the element interface for NAME and NAMESPACE.
bool known = false;
nameAtom = do_GetAtom(lcName);
if (namespaceID == kNameSpaceID_XHTML) {
nsIParserService* ps = nsContentUtils::GetParserService();
if (!ps) {
rv.Throw(NS_ERROR_UNEXPECTED);
return;
}
known =
ps->HTMLCaseSensitiveAtomTagToId(nameAtom) != eHTMLTag_userdefined;
} else {
known = SVGElementFactory::Exists(nameAtom);
}
// If BASE does not exist or is an interface for a custom element, set ERROR
// to InvalidName and stop.
// If BASE exists, then it cannot be an interface for a custom element.
if (!known) {
rv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return;
}
} else {
// If NAMESPACE is SVG Namespace, set ERROR to InvalidName and stop.
if (namespaceID == kNameSpaceID_SVG) {
rv.Throw(NS_ERROR_UNEXPECTED);
return;
}
nameAtom = typeAtom;
}
} // Leaving the document's compartment for the LifecycleCallbacks init
// Note: We call the init from the caller compartment here
nsAutoPtr<LifecycleCallbacks> callbacksHolder(new LifecycleCallbacks());
JS::RootedValue rootedv(aCx, JS::ObjectValue(*protoObject));
if (!JS_WrapValue(aCx, &rootedv) || !callbacksHolder->Init(aCx, rootedv)) {
rv.Throw(NS_ERROR_FAILURE);
return;
}
// Entering the global's compartment again
JSAutoCompartment ac(aCx, global);
// Associate the definition with the custom element.
CustomElementHashKey key(namespaceID, typeAtom);
LifecycleCallbacks* callbacks = callbacksHolder.forget();
CustomElementDefinition* definition =
new CustomElementDefinition(protoObject,
typeAtom,
nameAtom,
callbacks,
namespaceID,
0 /* TODO dependent on HTML imports. Bug 877072 */);
definitions.Put(&key, definition);
// Do element upgrade.
nsAutoPtr<nsTArray<nsRefPtr<Element>>> candidates;
mRegistry->mCandidatesMap.RemoveAndForget(&key, candidates);
if (candidates) {
for (size_t i = 0; i < candidates->Length(); ++i) {
Element *elem = candidates->ElementAt(i);
// Make sure that the element name matches the name in the definition.
// (e.g. a definition for x-button extending button should match
// <button is="x-button"> but not <x-button>.
if (elem->NodeInfo()->NameAtom() != nameAtom) {
// Skip over this element because definition does not apply.
continue;
}
nsWrapperCache* cache;
CallQueryInterface(elem, &cache);
MOZ_ASSERT(cache, "Element doesn't support wrapper cache?");
JS::RootedObject wrapper(aCx);
if ((wrapper = cache->GetWrapper())) {
if (!JS_SetPrototype(aCx, wrapper, protoObject)) {
continue;
}
}
EnqueueLifecycleCallback(nsIDocument::eCreated, elem, nullptr, definition);
}
}
// Create constructor to return. Store the name of the custom element as the
// name of the function.
JSFunction* constructor = JS_NewFunction(aCx, nsDocument::CustomElementConstructor, 0,
JSFUN_CONSTRUCTOR, JS::NullPtr(),
NS_ConvertUTF16toUTF8(lcType).get());
if (!constructor) {
rv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
JS::Rooted<JSObject*> constructorObj(aCx, JS_GetFunctionObject(constructor));
if (!JS_LinkConstructorAndPrototype(aCx, constructorObj, protoObject)) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return;
}
aRetval.set(constructorObj);
}
void
nsDocument::UseRegistryFromDocument(nsIDocument* aDocument)
{
nsDocument* doc = static_cast<nsDocument*>(aDocument);
MOZ_ASSERT(!mRegistry, "There should be no existing registry.");
mRegistry = doc->mRegistry;
}
NS_IMETHODIMP
nsDocument::GetElementsByTagName(const nsAString& aTagname,
nsIDOMNodeList** aReturn)
{
nsRefPtr<nsContentList> list = GetElementsByTagName(aTagname);
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
// transfer ref to aReturn
list.forget(aReturn);
return NS_OK;
}
long
nsDocument::BlockedTrackingNodeCount() const
{
return mBlockedTrackingNodes.Length();
}
already_AddRefed<nsSimpleContentList>
nsDocument::BlockedTrackingNodes() const
{
nsRefPtr<nsSimpleContentList> list = new nsSimpleContentList(nullptr);
nsTArray<nsWeakPtr> blockedTrackingNodes;
blockedTrackingNodes = mBlockedTrackingNodes;
for (unsigned long i = 0; i < blockedTrackingNodes.Length(); i++) {
nsWeakPtr weakNode = blockedTrackingNodes[i];
nsCOMPtr<nsIContent> node = do_QueryReferent(weakNode);
// Consider only nodes to which we have managed to get strong references.
// Coping with nullptrs since it's expected for nodes to disappear when
// nobody else is referring to them.
if (node) {
list->AppendElement(node);
}
}
return list.forget();
}
already_AddRefed<nsContentList>
nsIDocument::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
const nsAString& aLocalName,
ErrorResult& aResult)
{
int32_t nameSpaceId = kNameSpaceID_Wildcard;
if (!aNamespaceURI.EqualsLiteral("*")) {
aResult =
nsContentUtils::NameSpaceManager()->RegisterNameSpace(aNamespaceURI,
nameSpaceId);
if (aResult.Failed()) {
return nullptr;
}
}
NS_ASSERTION(nameSpaceId != kNameSpaceID_Unknown, "Unexpected namespace ID!");
return NS_GetContentList(this, nameSpaceId, aLocalName);
}
NS_IMETHODIMP
nsDocument::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
const nsAString& aLocalName,
nsIDOMNodeList** aReturn)
{
ErrorResult rv;
nsRefPtr<nsContentList> list =
nsIDocument::GetElementsByTagNameNS(aNamespaceURI, aLocalName, rv);
if (rv.Failed()) {
return rv.ErrorCode();
}
// transfer ref to aReturn
list.forget(aReturn);
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetAsync(bool *aAsync)
{
NS_ERROR("nsDocument::GetAsync() should be overriden by subclass!");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocument::SetAsync(bool aAsync)
{
NS_ERROR("nsDocument::SetAsync() should be overriden by subclass!");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocument::Load(const nsAString& aUrl, bool *aReturn)
{
NS_ERROR("nsDocument::Load() should be overriden by subclass!");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocument::GetStyleSheets(nsIDOMStyleSheetList** aStyleSheets)
{
NS_ADDREF(*aStyleSheets = StyleSheets());
return NS_OK;
}
StyleSheetList*
nsDocument::StyleSheets()
{
if (!mDOMStyleSheets) {
mDOMStyleSheets = new nsDOMStyleSheetList(this);
}
return mDOMStyleSheets;
}
NS_IMETHODIMP
nsDocument::GetMozSelectedStyleSheetSet(nsAString& aSheetSet)
{
nsIDocument::GetSelectedStyleSheetSet(aSheetSet);
return NS_OK;
}
void
nsIDocument::GetSelectedStyleSheetSet(nsAString& aSheetSet)
{
aSheetSet.Truncate();
// Look through our sheets, find the selected set title
int32_t count = GetNumberOfStyleSheets();
nsAutoString title;
for (int32_t index = 0; index < count; index++) {
nsIStyleSheet* sheet = GetStyleSheetAt(index);
NS_ASSERTION(sheet, "Null sheet in sheet list!");
nsCOMPtr<nsIDOMStyleSheet> domSheet = do_QueryInterface(sheet);
NS_ASSERTION(domSheet, "Sheet must QI to nsIDOMStyleSheet");
bool disabled;
domSheet->GetDisabled(&disabled);
if (disabled) {
// Disabled sheets don't affect the currently selected set
continue;
}
sheet->GetTitle(title);
if (aSheetSet.IsEmpty()) {
aSheetSet = title;
} else if (!title.IsEmpty() && !aSheetSet.Equals(title)) {
// Sheets from multiple sets enabled; return null string, per spec.
SetDOMStringToNull(aSheetSet);
return;
}
}
}
NS_IMETHODIMP
nsDocument::SetMozSelectedStyleSheetSet(const nsAString& aSheetSet)
{
SetSelectedStyleSheetSet(aSheetSet);
return NS_OK;
}
void
nsDocument::SetSelectedStyleSheetSet(const nsAString& aSheetSet)
{
if (DOMStringIsNull(aSheetSet)) {
return;
}
// Must update mLastStyleSheetSet before doing anything else with stylesheets
// or CSSLoaders.
mLastStyleSheetSet = aSheetSet;
EnableStyleSheetsForSetInternal(aSheetSet, true);
}
NS_IMETHODIMP
nsDocument::GetLastStyleSheetSet(nsAString& aSheetSet)
{
nsString sheetSet;
GetLastStyleSheetSet(sheetSet);
aSheetSet = sheetSet;
return NS_OK;
}
void
nsDocument::GetLastStyleSheetSet(nsString& aSheetSet)
{
aSheetSet = mLastStyleSheetSet;
}
NS_IMETHODIMP
nsDocument::GetPreferredStyleSheetSet(nsAString& aSheetSet)
{
nsIDocument::GetPreferredStyleSheetSet(aSheetSet);
return NS_OK;
}
void
nsIDocument::GetPreferredStyleSheetSet(nsAString& aSheetSet)
{
GetHeaderData(nsGkAtoms::headerDefaultStyle, aSheetSet);
}
NS_IMETHODIMP
nsDocument::GetStyleSheetSets(nsISupports** aList)
{
NS_ADDREF(*aList = StyleSheetSets());
return NS_OK;
}
DOMStringList*
nsDocument::StyleSheetSets()
{
if (!mStyleSheetSetList) {
mStyleSheetSetList = new nsDOMStyleSheetSetList(this);
}
return mStyleSheetSetList;
}
NS_IMETHODIMP
nsDocument::MozEnableStyleSheetsForSet(const nsAString& aSheetSet)
{
EnableStyleSheetsForSet(aSheetSet);
return NS_OK;
}
void
nsDocument::EnableStyleSheetsForSet(const nsAString& aSheetSet)
{
// Per spec, passing in null is a no-op.
if (!DOMStringIsNull(aSheetSet)) {
// Note: must make sure to not change the CSSLoader's preferred sheet --
// that value should be equal to either our lastStyleSheetSet (if that's
// non-null) or to our preferredStyleSheetSet. And this method doesn't
// change either of those.
EnableStyleSheetsForSetInternal(aSheetSet, false);
}
}
void
nsDocument::EnableStyleSheetsForSetInternal(const nsAString& aSheetSet,
bool aUpdateCSSLoader)
{
BeginUpdate(UPDATE_STYLE);
int32_t count = GetNumberOfStyleSheets();
nsAutoString title;
for (int32_t index = 0; index < count; index++) {
nsIStyleSheet* sheet = GetStyleSheetAt(index);
NS_ASSERTION(sheet, "Null sheet in sheet list!");
sheet->GetTitle(title);
if (!title.IsEmpty()) {
sheet->SetEnabled(title.Equals(aSheetSet));
}
}
if (aUpdateCSSLoader) {
CSSLoader()->SetPreferredSheet(aSheetSet);
}
EndUpdate(UPDATE_STYLE);
}
NS_IMETHODIMP
nsDocument::GetCharacterSet(nsAString& aCharacterSet)
{
nsIDocument::GetCharacterSet(aCharacterSet);
return NS_OK;
}
void
nsIDocument::GetCharacterSet(nsAString& aCharacterSet) const
{
CopyASCIItoUTF16(GetDocumentCharacterSet(), aCharacterSet);
}
NS_IMETHODIMP
nsDocument::ImportNode(nsIDOMNode* aImportedNode,
bool aDeep,
uint8_t aArgc,
nsIDOMNode** aResult)
{
if (aArgc == 0) {
aDeep = true;
}
*aResult = nullptr;
nsCOMPtr<nsINode> imported = do_QueryInterface(aImportedNode);
NS_ENSURE_TRUE(imported, NS_ERROR_UNEXPECTED);
ErrorResult rv;
nsCOMPtr<nsINode> result = nsIDocument::ImportNode(*imported, aDeep, rv);
if (rv.Failed()) {
return rv.ErrorCode();
}
NS_ADDREF(*aResult = result->AsDOMNode());
return NS_OK;
}
already_AddRefed<nsINode>
nsIDocument::ImportNode(nsINode& aNode, bool aDeep, ErrorResult& rv) const
{
nsINode* imported = &aNode;
switch (imported->NodeType()) {
case nsIDOMNode::ATTRIBUTE_NODE:
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
case nsIDOMNode::ELEMENT_NODE:
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
case nsIDOMNode::TEXT_NODE:
case nsIDOMNode::CDATA_SECTION_NODE:
case nsIDOMNode::COMMENT_NODE:
case nsIDOMNode::DOCUMENT_TYPE_NODE:
{
nsCOMPtr<nsINode> newNode;
nsCOMArray<nsINode> nodesWithProperties;
rv = nsNodeUtils::Clone(imported, aDeep, mNodeInfoManager,
nodesWithProperties, getter_AddRefs(newNode));
if (rv.Failed()) {
return nullptr;
}
return newNode.forget();
}
default:
{
NS_WARNING("Don't know how to clone this nodetype for importNode.");
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
}
}
return nullptr;
}
NS_IMETHODIMP
nsDocument::LoadBindingDocument(const nsAString& aURI)
{
ErrorResult rv;
nsIDocument::LoadBindingDocument(aURI, rv);
return rv.ErrorCode();
}
void
nsIDocument::LoadBindingDocument(const nsAString& aURI, ErrorResult& rv)
{
nsCOMPtr<nsIURI> uri;
rv = NS_NewURI(getter_AddRefs(uri), aURI,
mCharacterSet.get(),
GetDocBaseURI());
if (rv.Failed()) {
return;
}
// Note - This computation of subjectPrincipal isn't necessarily sensical.
// It's just designed to preserve the old semantics during a mass-conversion
// patch.
nsCOMPtr<nsIPrincipal> subjectPrincipal =
nsContentUtils::GetCurrentJSContext() ? nsContentUtils::SubjectPrincipal()
: NodePrincipal();
BindingManager()->LoadBindingDocument(this, uri, subjectPrincipal);
}
NS_IMETHODIMP
nsDocument::GetBindingParent(nsIDOMNode* aNode, nsIDOMElement** aResult)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
NS_ENSURE_ARG_POINTER(node);
Element* bindingParent = nsIDocument::GetBindingParent(*node);
nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(bindingParent);
retval.forget(aResult);
return NS_OK;
}
Element*
nsIDocument::GetBindingParent(nsINode& aNode)
{
nsCOMPtr<nsIContent> content(do_QueryInterface(&aNode));
if (!content)
return nullptr;
nsIContent* bindingParent = content->GetBindingParent();
return bindingParent ? bindingParent->AsElement() : nullptr;
}
static Element*
GetElementByAttribute(nsIContent* aContent, nsIAtom* aAttrName,
const nsAString& aAttrValue, bool aUniversalMatch)
{
if (aUniversalMatch ? aContent->HasAttr(kNameSpaceID_None, aAttrName) :
aContent->AttrValueIs(kNameSpaceID_None, aAttrName,
aAttrValue, eCaseMatters)) {
return aContent->AsElement();
}
for (nsIContent* child = aContent->GetFirstChild();
child;
child = child->GetNextSibling()) {
Element* matchedElement =
GetElementByAttribute(child, aAttrName, aAttrValue, aUniversalMatch);
if (matchedElement)
return matchedElement;
}
return nullptr;
}
Element*
nsDocument::GetAnonymousElementByAttribute(nsIContent* aElement,
nsIAtom* aAttrName,
const nsAString& aAttrValue) const
{
nsINodeList* nodeList = BindingManager()->GetAnonymousNodesFor(aElement);
if (!nodeList)
return nullptr;
uint32_t length = 0;
nodeList->GetLength(&length);
bool universalMatch = aAttrValue.EqualsLiteral("*");
for (uint32_t i = 0; i < length; ++i) {
nsIContent* current = nodeList->Item(i);
Element* matchedElm =
GetElementByAttribute(current, aAttrName, aAttrValue, universalMatch);
if (matchedElm)
return matchedElm;
}
return nullptr;
}
NS_IMETHODIMP
nsDocument::GetAnonymousElementByAttribute(nsIDOMElement* aElement,
const nsAString& aAttrName,
const nsAString& aAttrValue,
nsIDOMElement** aResult)
{
nsCOMPtr<Element> element = do_QueryInterface(aElement);
NS_ENSURE_ARG_POINTER(element);
Element* anonEl =
nsIDocument::GetAnonymousElementByAttribute(*element, aAttrName,
aAttrValue);
nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(anonEl);
retval.forget(aResult);
return NS_OK;
}
Element*
nsIDocument::GetAnonymousElementByAttribute(Element& aElement,
const nsAString& aAttrName,
const nsAString& aAttrValue)
{
nsCOMPtr<nsIAtom> attribute = do_GetAtom(aAttrName);
return GetAnonymousElementByAttribute(&aElement, attribute, aAttrValue);
}
NS_IMETHODIMP
nsDocument::GetAnonymousNodes(nsIDOMElement* aElement,
nsIDOMNodeList** aResult)
{
*aResult = nullptr;
nsCOMPtr<nsIContent> content(do_QueryInterface(aElement));
return BindingManager()->GetAnonymousNodesFor(content, aResult);
}
nsINodeList*
nsIDocument::GetAnonymousNodes(Element& aElement)
{
return BindingManager()->GetAnonymousNodesFor(&aElement);
}
NS_IMETHODIMP
nsDocument::CreateRange(nsIDOMRange** aReturn)
{
ErrorResult rv;
*aReturn = nsIDocument::CreateRange(rv).take();
return rv.ErrorCode();
}
already_AddRefed<nsRange>
nsIDocument::CreateRange(ErrorResult& rv)
{
nsRefPtr<nsRange> range = new nsRange(this);
nsresult res = range->Set(this, 0, this, 0);
if (NS_FAILED(res)) {
rv.Throw(res);
return nullptr;
}
return range.forget();
}
NS_IMETHODIMP
nsDocument::CreateNodeIterator(nsIDOMNode *aRoot,
uint32_t aWhatToShow,
nsIDOMNodeFilter *aFilter,
uint8_t aOptionalArgc,
nsIDOMNodeIterator **_retval)
{
*_retval = nullptr;
if (!aOptionalArgc) {
aWhatToShow = nsIDOMNodeFilter::SHOW_ALL;
}
if (!aRoot) {
return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
}
nsCOMPtr<nsINode> root = do_QueryInterface(aRoot);
NS_ENSURE_TRUE(root, NS_ERROR_UNEXPECTED);
ErrorResult rv;
NodeFilterHolder holder(aFilter);
*_retval = nsIDocument::CreateNodeIterator(*root, aWhatToShow, holder,
rv).take();
return rv.ErrorCode();
}
already_AddRefed<NodeIterator>
nsIDocument::CreateNodeIterator(nsINode& aRoot, uint32_t aWhatToShow,
NodeFilter* aFilter,
ErrorResult& rv) const
{
NodeFilterHolder holder(aFilter);
return CreateNodeIterator(aRoot, aWhatToShow, holder, rv);
}
already_AddRefed<NodeIterator>
nsIDocument::CreateNodeIterator(nsINode& aRoot, uint32_t aWhatToShow,
const NodeFilterHolder& aFilter,
ErrorResult& rv) const
{
nsINode* root = &aRoot;
nsRefPtr<NodeIterator> iterator = new NodeIterator(root, aWhatToShow,
aFilter);
return iterator.forget();
}
NS_IMETHODIMP
nsDocument::CreateTreeWalker(nsIDOMNode *aRoot,
uint32_t aWhatToShow,
nsIDOMNodeFilter *aFilter,
uint8_t aOptionalArgc,
nsIDOMTreeWalker **_retval)
{
*_retval = nullptr;
if (!aOptionalArgc) {
aWhatToShow = nsIDOMNodeFilter::SHOW_ALL;
}
nsCOMPtr<nsINode> root = do_QueryInterface(aRoot);
NS_ENSURE_TRUE(root, NS_ERROR_DOM_NOT_SUPPORTED_ERR);
ErrorResult rv;
NodeFilterHolder holder(aFilter);
*_retval = nsIDocument::CreateTreeWalker(*root, aWhatToShow, holder,
rv).take();
return rv.ErrorCode();
}
already_AddRefed<TreeWalker>
nsIDocument::CreateTreeWalker(nsINode& aRoot, uint32_t aWhatToShow,
NodeFilter* aFilter,
ErrorResult& rv) const
{
NodeFilterHolder holder(aFilter);
return CreateTreeWalker(aRoot, aWhatToShow, holder, rv);
}
already_AddRefed<TreeWalker>
nsIDocument::CreateTreeWalker(nsINode& aRoot, uint32_t aWhatToShow,
const NodeFilterHolder& aFilter,
ErrorResult& rv) const
{
nsINode* root = &aRoot;
nsRefPtr<TreeWalker> walker = new TreeWalker(root, aWhatToShow, aFilter);
return walker.forget();
}
NS_IMETHODIMP
nsDocument::GetDefaultView(nsIDOMWindow** aDefaultView)
{
*aDefaultView = nullptr;
nsCOMPtr<nsPIDOMWindow> win = GetWindow();
win.forget(aDefaultView);
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetLocation(nsIDOMLocation **_retval)
{
*_retval = nsIDocument::GetLocation().take();
return NS_OK;
}
already_AddRefed<nsLocation>
nsIDocument::GetLocation() const
{
nsCOMPtr<nsIDOMWindow> w = do_QueryInterface(mScriptGlobalObject);
if (!w) {
return nullptr;
}
nsCOMPtr<nsIDOMLocation> loc;
w->GetLocation(getter_AddRefs(loc));
return loc.forget().downcast<nsLocation>();
}
Element*
nsIDocument::GetHtmlElement() const
{
Element* rootElement = GetRootElement();
if (rootElement && rootElement->IsHTML(nsGkAtoms::html))
return rootElement;
return nullptr;
}
Element*
nsIDocument::GetHtmlChildElement(nsIAtom* aTag)
{
Element* html = GetHtmlElement();
if (!html)
return nullptr;
// Look for the element with aTag inside html. This needs to run
// forwards to find the first such element.
for (nsIContent* child = html->GetFirstChild();
child;
child = child->GetNextSibling()) {
if (child->IsHTML(aTag))
return child->AsElement();
}
return nullptr;
}
nsIContent*
nsDocument::GetTitleContent(uint32_t aNamespace)
{
// mMayHaveTitleElement will have been set to true if any HTML or SVG
// <title> element has been bound to this document. So if it's false,
// we know there is nothing to do here. This avoids us having to search
// the whole DOM if someone calls document.title on a large document
// without a title.
if (!mMayHaveTitleElement)
return nullptr;
nsRefPtr<nsContentList> list =
NS_GetContentList(this, aNamespace, NS_LITERAL_STRING("title"));
return list->Item(0, false);
}
void
nsDocument::GetTitleFromElement(uint32_t aNamespace, nsAString& aTitle)
{
nsIContent* title = GetTitleContent(aNamespace);
if (!title)
return;
if(!nsContentUtils::GetNodeTextContent(title, false, aTitle))
NS_RUNTIMEABORT("OOM");
}
NS_IMETHODIMP
nsDocument::GetTitle(nsAString& aTitle)
{
nsString title;
GetTitle(title);
aTitle = title;
return NS_OK;
}
void
nsDocument::GetTitle(nsString& aTitle)
{
aTitle.Truncate();
nsIContent *rootElement = GetRootElement();
if (!rootElement)
return;
nsAutoString tmp;
switch (rootElement->GetNameSpaceID()) {
#ifdef MOZ_XUL
case kNameSpaceID_XUL:
rootElement->GetAttr(kNameSpaceID_None, nsGkAtoms::title, tmp);
break;
#endif
case kNameSpaceID_SVG:
if (rootElement->Tag() == nsGkAtoms::svg) {
GetTitleFromElement(kNameSpaceID_SVG, tmp);
break;
} // else fall through
default:
GetTitleFromElement(kNameSpaceID_XHTML, tmp);
break;
}
tmp.CompressWhitespace();
aTitle = tmp;
}
NS_IMETHODIMP
nsDocument::SetTitle(const nsAString& aTitle)
{
Element *rootElement = GetRootElement();
if (!rootElement)
return NS_OK;
switch (rootElement->GetNameSpaceID()) {
case kNameSpaceID_SVG:
return NS_OK; // SVG doesn't support setting a title
#ifdef MOZ_XUL
case kNameSpaceID_XUL:
return rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::title,
aTitle, true);
#endif
}
// Batch updates so that mutation events don't change "the title
// element" under us
mozAutoDocUpdate updateBatch(this, UPDATE_CONTENT_MODEL, true);
nsIContent* title = GetTitleContent(kNameSpaceID_XHTML);
if (!title) {
Element *head = GetHeadElement();
if (!head)
return NS_OK;
{
nsRefPtr<mozilla::dom::NodeInfo> titleInfo;
titleInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::title, nullptr,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
title = NS_NewHTMLTitleElement(titleInfo.forget());
if (!title)
return NS_OK;
}
head->AppendChildTo(title, true);
}
return nsContentUtils::SetNodeTextContent(title, aTitle, false);
}
void
nsDocument::SetTitle(const nsAString& aTitle, ErrorResult& rv)
{
rv = SetTitle(aTitle);
}
void
nsDocument::NotifyPossibleTitleChange(bool aBoundTitleElement)
{
NS_ASSERTION(!mInUnlinkOrDeletion || !aBoundTitleElement,
"Setting a title while unlinking or destroying the element?");
if (mInUnlinkOrDeletion) {
return;
}
if (aBoundTitleElement) {
mMayHaveTitleElement = true;
}
if (mPendingTitleChangeEvent.IsPending())
return;
nsRefPtr<nsRunnableMethod<nsDocument, void, false> > event =
NS_NewNonOwningRunnableMethod(this,
&nsDocument::DoNotifyPossibleTitleChange);
nsresult rv = NS_DispatchToCurrentThread(event);
if (NS_SUCCEEDED(rv)) {
mPendingTitleChangeEvent = event;
}
}
void
nsDocument::DoNotifyPossibleTitleChange()
{
mPendingTitleChangeEvent.Forget();
mHaveFiredTitleChange = true;
nsAutoString title;
GetTitle(title);
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
nsCOMPtr<nsISupports> container =
shell->GetPresContext()->GetContainerWeak();
if (container) {
nsCOMPtr<nsIBaseWindow> docShellWin = do_QueryInterface(container);
if (docShellWin) {
docShellWin->SetTitle(title.get());
}
}
}
// Fire a DOM event for the title change.
nsContentUtils::DispatchChromeEvent(this, static_cast<nsIDocument*>(this),
NS_LITERAL_STRING("DOMTitleChanged"),
true, true);
}
already_AddRefed<BoxObject>
nsDocument::GetBoxObjectFor(Element* aElement, ErrorResult& aRv)
{
if (!aElement) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
nsIDocument* doc = aElement->OwnerDoc();
if (doc != this) {
aRv.Throw(NS_ERROR_DOM_WRONG_DOCUMENT_ERR);
return nullptr;
}
if (!mHasWarnedAboutBoxObjects && !aElement->IsXUL()) {
mHasWarnedAboutBoxObjects = true;
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("BoxObjects"), this,
nsContentUtils::eDOM_PROPERTIES,
"UseOfGetBoxObjectForWarning");
}
if (!mBoxObjectTable) {
mBoxObjectTable = new nsInterfaceHashtable<nsPtrHashKey<nsIContent>, nsPIBoxObject>(6);
} else {
nsCOMPtr<nsPIBoxObject> boxObject = mBoxObjectTable->Get(aElement);
if (boxObject) {
return boxObject.forget().downcast<BoxObject>();
}
}
int32_t namespaceID;
nsCOMPtr<nsIAtom> tag = BindingManager()->ResolveTag(aElement, &namespaceID);
nsAutoCString contractID("@mozilla.org/layout/xul-boxobject");
if (namespaceID == kNameSpaceID_XUL) {
if (tag == nsGkAtoms::browser ||
tag == nsGkAtoms::editor ||
tag == nsGkAtoms::iframe)
contractID += "-container";
else if (tag == nsGkAtoms::menu)
contractID += "-menu";
else if (tag == nsGkAtoms::popup ||
tag == nsGkAtoms::menupopup ||
tag == nsGkAtoms::panel ||
tag == nsGkAtoms::tooltip)
contractID += "-popup";
else if (tag == nsGkAtoms::tree)
contractID += "-tree";
else if (tag == nsGkAtoms::listbox)
contractID += "-listbox";
else if (tag == nsGkAtoms::scrollbox)
contractID += "-scrollbox";
}
contractID += ";1";
nsCOMPtr<nsPIBoxObject> boxObject(do_CreateInstance(contractID.get()));
if (!boxObject) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
boxObject->Init(aElement);
if (mBoxObjectTable) {
mBoxObjectTable->Put(aElement, boxObject.get());
}
return boxObject.forget().downcast<BoxObject>();
}
void
nsDocument::ClearBoxObjectFor(nsIContent* aContent)
{
if (mBoxObjectTable) {
nsPIBoxObject *boxObject = mBoxObjectTable->GetWeak(aContent);
if (boxObject) {
boxObject->Clear();
mBoxObjectTable->Remove(aContent);
}
}
}
already_AddRefed<MediaQueryList>
nsIDocument::MatchMedia(const nsAString& aMediaQueryList)
{
nsRefPtr<MediaQueryList> result = new MediaQueryList(this, aMediaQueryList);
// Insert the new item at the end of the linked list.
PR_INSERT_BEFORE(result, &mDOMMediaQueryLists);
return result.forget();
}
void
nsDocument::FlushSkinBindings()
{
BindingManager()->FlushSkinBindings();
}
nsresult
nsDocument::InitializeFrameLoader(nsFrameLoader* aLoader)
{
mInitializableFrameLoaders.RemoveElement(aLoader);
// Don't even try to initialize.
if (mInDestructor) {
NS_WARNING("Trying to initialize a frame loader while"
"document is being deleted");
return NS_ERROR_FAILURE;
}
mInitializableFrameLoaders.AppendElement(aLoader);
if (!mFrameLoaderRunner) {
mFrameLoaderRunner =
NS_NewRunnableMethod(this, &nsDocument::MaybeInitializeFinalizeFrameLoaders);
NS_ENSURE_TRUE(mFrameLoaderRunner, NS_ERROR_OUT_OF_MEMORY);
nsContentUtils::AddScriptRunner(mFrameLoaderRunner);
}
return NS_OK;
}
nsresult
nsDocument::FinalizeFrameLoader(nsFrameLoader* aLoader)
{
mInitializableFrameLoaders.RemoveElement(aLoader);
if (mInDestructor) {
return NS_ERROR_FAILURE;
}
mFinalizableFrameLoaders.AppendElement(aLoader);
if (!mFrameLoaderRunner) {
mFrameLoaderRunner =
NS_NewRunnableMethod(this, &nsDocument::MaybeInitializeFinalizeFrameLoaders);
NS_ENSURE_TRUE(mFrameLoaderRunner, NS_ERROR_OUT_OF_MEMORY);
nsContentUtils::AddScriptRunner(mFrameLoaderRunner);
}
return NS_OK;
}
void
nsDocument::MaybeInitializeFinalizeFrameLoaders()
{
if (mDelayFrameLoaderInitialization || mUpdateNestLevel != 0) {
// This method will be recalled when mUpdateNestLevel drops to 0,
// or when !mDelayFrameLoaderInitialization.
mFrameLoaderRunner = nullptr;
return;
}
// We're not in an update, but it is not safe to run scripts, so
// postpone frameloader initialization and finalization.
if (!nsContentUtils::IsSafeToRunScript()) {
if (!mInDestructor && !mFrameLoaderRunner &&
(mInitializableFrameLoaders.Length() ||
mFinalizableFrameLoaders.Length())) {
mFrameLoaderRunner =
NS_NewRunnableMethod(this, &nsDocument::MaybeInitializeFinalizeFrameLoaders);
nsContentUtils::AddScriptRunner(mFrameLoaderRunner);
}
return;
}
mFrameLoaderRunner = nullptr;
// Don't use a temporary array for mInitializableFrameLoaders, because
// loading a frame may cause some other frameloader to be removed from the
// array. But be careful to keep the loader alive when starting the load!
while (mInitializableFrameLoaders.Length()) {
nsRefPtr<nsFrameLoader> loader = mInitializableFrameLoaders[0];
mInitializableFrameLoaders.RemoveElementAt(0);
NS_ASSERTION(loader, "null frameloader in the array?");
loader->ReallyStartLoading();
}
uint32_t length = mFinalizableFrameLoaders.Length();
if (length > 0) {
nsTArray<nsRefPtr<nsFrameLoader> > loaders;
mFinalizableFrameLoaders.SwapElements(loaders);
for (uint32_t i = 0; i < length; ++i) {
loaders[i]->Finalize();
}
}
}
void
nsDocument::TryCancelFrameLoaderInitialization(nsIDocShell* aShell)
{
uint32_t length = mInitializableFrameLoaders.Length();
for (uint32_t i = 0; i < length; ++i) {
if (mInitializableFrameLoaders[i]->GetExistingDocShell() == aShell) {
mInitializableFrameLoaders.RemoveElementAt(i);
return;
}
}
}
bool
nsDocument::FrameLoaderScheduledToBeFinalized(nsIDocShell* aShell)
{
if (aShell) {
uint32_t length = mFinalizableFrameLoaders.Length();
for (uint32_t i = 0; i < length; ++i) {
if (mFinalizableFrameLoaders[i]->GetExistingDocShell() == aShell) {
return true;
}
}
}
return false;
}
nsIDocument*
nsDocument::RequestExternalResource(nsIURI* aURI,
nsINode* aRequestingNode,
ExternalResourceLoad** aPendingLoad)
{
NS_PRECONDITION(aURI, "Must have a URI");
NS_PRECONDITION(aRequestingNode, "Must have a node");
if (mDisplayDocument) {
return mDisplayDocument->RequestExternalResource(aURI,
aRequestingNode,
aPendingLoad);
}
return mExternalResourceMap.RequestResource(aURI, aRequestingNode,
this, aPendingLoad);
}
void
nsDocument::EnumerateExternalResources(nsSubDocEnumFunc aCallback, void* aData)
{
mExternalResourceMap.EnumerateResources(aCallback, aData);
}
nsSMILAnimationController*
nsDocument::GetAnimationController()
{
// We create the animation controller lazily because most documents won't want
// one and only SVG documents and the like will call this
if (mAnimationController)
return mAnimationController;
// Refuse to create an Animation Controller for data documents.
if (mLoadedAsData || mLoadedAsInteractiveData)
return nullptr;
mAnimationController = new nsSMILAnimationController(this);
// If there's a presContext then check the animation mode and pause if
// necessary.
nsIPresShell *shell = GetShell();
if (mAnimationController && shell) {
nsPresContext *context = shell->GetPresContext();
if (context &&
context->ImageAnimationMode() == imgIContainer::kDontAnimMode) {
mAnimationController->Pause(nsSMILTimeContainer::PAUSE_USERPREF);
}
}
// If we're hidden (or being hidden), notify the newly-created animation
// controller. (Skip this check for SVG-as-an-image documents, though,
// because they don't get OnPageShow / OnPageHide calls).
if (!mIsShowing && !mIsBeingUsedAsImage) {
mAnimationController->OnPageHide();
}
return mAnimationController;
}
PendingPlayerTracker*
nsDocument::GetOrCreatePendingPlayerTracker()
{
if (!mPendingPlayerTracker) {
mPendingPlayerTracker = new PendingPlayerTracker(this);
}
return mPendingPlayerTracker;
}
/**
* Retrieve the "direction" property of the document.
*
* @lina 01/09/2001
*/
NS_IMETHODIMP
nsDocument::GetDir(nsAString& aDirection)
{
nsIDocument::GetDir(aDirection);
return NS_OK;
}
void
nsIDocument::GetDir(nsAString& aDirection) const
{
aDirection.Truncate();
Element* rootElement = GetHtmlElement();
if (rootElement) {
static_cast<nsGenericHTMLElement*>(rootElement)->GetDir(aDirection);
}
}
/**
* Set the "direction" property of the document.
*
* @lina 01/09/2001
*/
NS_IMETHODIMP
nsDocument::SetDir(const nsAString& aDirection)
{
nsIDocument::SetDir(aDirection);
return NS_OK;
}
void
nsIDocument::SetDir(const nsAString& aDirection)
{
Element* rootElement = GetHtmlElement();
if (rootElement) {
rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir,
aDirection, true);
}
}
NS_IMETHODIMP
nsDocument::GetInputEncoding(nsAString& aInputEncoding)
{
nsIDocument::GetInputEncoding(aInputEncoding);
return NS_OK;
}
void
nsIDocument::GetInputEncoding(nsAString& aInputEncoding)
{
// Not const function, because WarnOnceAbout is not a const method
WarnOnceAbout(eInputEncoding);
if (mHaveInputEncoding) {
return GetCharacterSet(aInputEncoding);
}
SetDOMStringToNull(aInputEncoding);
}
NS_IMETHODIMP
nsDocument::GetMozSyntheticDocument(bool *aSyntheticDocument)
{
*aSyntheticDocument = mIsSyntheticDocument;
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetDocumentURI(nsAString& aDocumentURI)
{
nsString temp;
nsIDocument::GetDocumentURI(temp);
aDocumentURI = temp;
return NS_OK;
}
void
nsIDocument::GetDocumentURI(nsString& aDocumentURI) const
{
if (mDocumentURI) {
nsAutoCString uri;
mDocumentURI->GetSpec(uri);
CopyUTF8toUTF16(uri, aDocumentURI);
} else {
aDocumentURI.Truncate();
}
}
// Alias of above
NS_IMETHODIMP
nsDocument::GetURL(nsAString& aURL)
{
return GetDocumentURI(aURL);
}
void
nsIDocument::GetURL(nsString& aURL) const
{
return GetDocumentURI(aURL);
}
void
nsIDocument::GetDocumentURIFromJS(nsString& aDocumentURI) const
{
if (!mChromeXHRDocURI || !nsContentUtils::IsCallerChrome()) {
return GetDocumentURI(aDocumentURI);
}
nsAutoCString uri;
mChromeXHRDocURI->GetSpec(uri);
CopyUTF8toUTF16(uri, aDocumentURI);
}
nsIURI*
nsIDocument::GetDocumentURIObject() const
{
if (!mChromeXHRDocURI) {
return GetDocumentURI();
}
return mChromeXHRDocURI;
}
// readonly attribute DOMString compatMode;
// Returns "BackCompat" if we are in quirks mode, "CSS1Compat" if we are
// in almost standards or full standards mode. See bug 105640. This was
// implemented to match MSIE's compatMode property.
NS_IMETHODIMP
nsDocument::GetCompatMode(nsAString& aCompatMode)
{
nsString temp;
nsIDocument::GetCompatMode(temp);
aCompatMode = temp;
return NS_OK;
}
void
nsIDocument::GetCompatMode(nsString& aCompatMode) const
{
NS_ASSERTION(mCompatMode == eCompatibility_NavQuirks ||
mCompatMode == eCompatibility_AlmostStandards ||
mCompatMode == eCompatibility_FullStandards,
"mCompatMode is neither quirks nor strict for this document");
if (mCompatMode == eCompatibility_NavQuirks) {
aCompatMode.AssignLiteral("BackCompat");
} else {
aCompatMode.AssignLiteral("CSS1Compat");
}
}
static void BlastSubtreeToPieces(nsINode *aNode);
PLDHashOperator
BlastFunc(nsAttrHashKey::KeyType aKey, Attr *aData, void* aUserArg)
{
nsCOMPtr<nsIAttribute> *attr =
static_cast<nsCOMPtr<nsIAttribute>*>(aUserArg);
*attr = aData;
NS_ASSERTION(attr->get(),
"non-nsIAttribute somehow made it into the hashmap?!");
return PL_DHASH_STOP;
}
static void
BlastSubtreeToPieces(nsINode *aNode)
{
if (aNode->IsElement()) {
Element *element = aNode->AsElement();
const nsDOMAttributeMap *map = element->GetAttributeMap();
if (map) {
nsCOMPtr<nsIAttribute> attr;
while (map->Enumerate(BlastFunc, &attr) > 0) {
BlastSubtreeToPieces(attr);
#ifdef DEBUG
nsresult rv =
#endif
element->UnsetAttr(attr->NodeInfo()->NamespaceID(),
attr->NodeInfo()->NameAtom(),
false);
// XXX Should we abort here?
NS_ASSERTION(NS_SUCCEEDED(rv), "Uhoh, UnsetAttr shouldn't fail!");
}
}
}
uint32_t count = aNode->GetChildCount();
for (uint32_t i = 0; i < count; ++i) {
BlastSubtreeToPieces(aNode->GetFirstChild());
aNode->RemoveChildAt(0, false);
}
}
NS_IMETHODIMP
nsDocument::AdoptNode(nsIDOMNode *aAdoptedNode, nsIDOMNode **aResult)
{
*aResult = nullptr;
nsCOMPtr<nsINode> adoptedNode = do_QueryInterface(aAdoptedNode);
NS_ENSURE_TRUE(adoptedNode, NS_ERROR_UNEXPECTED);
ErrorResult rv;
nsINode* result = nsIDocument::AdoptNode(*adoptedNode, rv);
if (rv.Failed()) {
return rv.ErrorCode();
}
NS_ADDREF(*aResult = result->AsDOMNode());
return NS_OK;
}
nsINode*
nsIDocument::AdoptNode(nsINode& aAdoptedNode, ErrorResult& rv)
{
nsINode* adoptedNode = &aAdoptedNode;
// Scope firing mutation events so that we don't carry any state that
// might be stale
{
nsINode* parent = adoptedNode->GetParentNode();
if (parent) {
nsContentUtils::MaybeFireNodeRemoved(adoptedNode, parent,
adoptedNode->OwnerDoc());
}
}
nsAutoScriptBlocker scriptBlocker;
switch (adoptedNode->NodeType()) {
case nsIDOMNode::ATTRIBUTE_NODE:
{
// Remove from ownerElement.
nsRefPtr<Attr> adoptedAttr = static_cast<Attr*>(adoptedNode);
nsCOMPtr<Element> ownerElement = adoptedAttr->GetOwnerElement(rv);
if (rv.Failed()) {
return nullptr;
}
if (ownerElement) {
nsRefPtr<Attr> newAttr =
ownerElement->RemoveAttributeNode(*adoptedAttr, rv);
if (rv.Failed()) {
return nullptr;
}
newAttr.swap(adoptedAttr);
}
break;
}
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
case nsIDOMNode::ELEMENT_NODE:
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
case nsIDOMNode::TEXT_NODE:
case nsIDOMNode::CDATA_SECTION_NODE:
case nsIDOMNode::COMMENT_NODE:
case nsIDOMNode::DOCUMENT_TYPE_NODE:
{
// Don't allow adopting a node's anonymous subtree out from under it.
if (adoptedNode->AsContent()->IsRootOfAnonymousSubtree()) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
// We don't want to adopt an element into its own contentDocument or into
// a descendant contentDocument, so we check if the frameElement of this
// document or any of its parents is the adopted node or one of its
// descendants.
nsIDocument *doc = this;
do {
nsPIDOMWindow *win = doc->GetWindow();
if (win) {
nsCOMPtr<nsINode> node = win->GetFrameElementInternal();
if (node &&
nsContentUtils::ContentIsDescendantOf(node, adoptedNode)) {
rv.Throw(NS_ERROR_DOM_HIERARCHY_REQUEST_ERR);
return nullptr;
}
}
} while ((doc = doc->GetParentDocument()));
// Remove from parent.
nsCOMPtr<nsINode> parent = adoptedNode->GetParentNode();
if (parent) {
int32_t idx = parent->IndexOf(adoptedNode);
MOZ_ASSERT(idx >= 0);
parent->RemoveChildAt(idx, true);
} else {
MOZ_ASSERT(!adoptedNode->IsInDoc());
// If we're adopting a node that's not in a document, it might still
// have a binding applied. Remove the binding from the element now
// that it's getting adopted into a new document.
// TODO Fully tear down the binding.
adoptedNode->AsContent()->SetXBLBinding(nullptr);
}
break;
}
case nsIDOMNode::DOCUMENT_NODE:
{
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
default:
{
NS_WARNING("Don't know how to adopt this nodetype for adoptNode.");
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
}
nsCOMPtr<nsIDocument> oldDocument = adoptedNode->OwnerDoc();
bool sameDocument = oldDocument == this;
AutoJSContext cx;
JS::Rooted<JSObject*> newScope(cx, nullptr);
if (!sameDocument) {
newScope = GetWrapper();
if (!newScope && GetScopeObject() && GetScopeObject()->GetGlobalJSObject()) {
// Make sure cx is in a semi-sane compartment before we call WrapNative.
// It's kind of irrelevant, given that we're passing aAllowWrapping =
// false, and documents should always insist on being wrapped in an
// canonical scope. But we try to pass something sane anyway.
JSAutoCompartment ac(cx, GetScopeObject()->GetGlobalJSObject());
JS::Rooted<JS::Value> v(cx);
rv = nsContentUtils::WrapNative(cx, this, this, &v,
/* aAllowWrapping = */ false);
if (rv.Failed())
return nullptr;
newScope = &v.toObject();
}
}
nsCOMArray<nsINode> nodesWithProperties;
rv = nsNodeUtils::Adopt(adoptedNode, sameDocument ? nullptr : mNodeInfoManager,
newScope, nodesWithProperties);
if (rv.Failed()) {
// Disconnect all nodes from their parents, since some have the old document
// as their ownerDocument and some have this as their ownerDocument.
BlastSubtreeToPieces(adoptedNode);
if (!sameDocument && oldDocument) {
uint32_t count = nodesWithProperties.Count();
for (uint32_t j = 0; j < oldDocument->GetPropertyTableCount(); ++j) {
for (uint32_t i = 0; i < count; ++i) {
// Remove all properties.
oldDocument->PropertyTable(j)->
DeleteAllPropertiesFor(nodesWithProperties[i]);
}
}
}
return nullptr;
}
uint32_t count = nodesWithProperties.Count();
if (!sameDocument && oldDocument) {
for (uint32_t j = 0; j < oldDocument->GetPropertyTableCount(); ++j) {
nsPropertyTable *oldTable = oldDocument->PropertyTable(j);
nsPropertyTable *newTable = PropertyTable(j);
for (uint32_t i = 0; i < count; ++i) {
rv = oldTable->TransferOrDeleteAllPropertiesFor(nodesWithProperties[i],
newTable);
}
}
if (rv.Failed()) {
// Disconnect all nodes from their parents.
BlastSubtreeToPieces(adoptedNode);
return nullptr;
}
}
NS_ASSERTION(adoptedNode->OwnerDoc() == this,
"Should still be in the document we just got adopted into");
return adoptedNode;
}
nsViewportInfo
nsDocument::GetViewportInfo(const ScreenIntSize& aDisplaySize)
{
// Compute the CSS-to-LayoutDevice pixel scale as the product of the
// widget scale and the full zoom.
nsPresContext* context = mPresShell->GetPresContext();
float fullZoom = context ? context->GetFullZoom() : 1.0;
fullZoom = (fullZoom == 0.0) ? 1.0 : fullZoom;
nsIWidget *widget = nsContentUtils::WidgetForDocument(this);
float widgetScale = widget ? widget->GetDefaultScale().scale : 1.0f;
CSSToLayoutDeviceScale layoutDeviceScale(widgetScale * fullZoom);
CSSToScreenScale defaultScale = layoutDeviceScale
* LayoutDeviceToScreenScale(1.0);
if (!Preferences::GetBool("dom.meta-viewport.enabled", false)) {
return nsViewportInfo(aDisplaySize,
defaultScale,
/*allowZoom*/ false,
/*allowDoubleTapZoom*/ true);
}
// In cases where the width of the CSS viewport is less than or equal to the width
// of the display (i.e. width <= device-width) then we disable double-tap-to-zoom
// behaviour. See bug 941995 for details.
switch (mViewportType) {
case DisplayWidthHeight:
return nsViewportInfo(aDisplaySize,
defaultScale,
/*allowZoom*/ true,
/*allowDoubleTapZoom*/ true);
case DisplayWidthHeightNoZoom:
return nsViewportInfo(aDisplaySize,
defaultScale,
/*allowZoom*/ false,
/*allowDoubleTapZoom*/ false);
case Unknown:
{
nsAutoString viewport;
GetHeaderData(nsGkAtoms::viewport, viewport);
if (viewport.IsEmpty()) {
// If the docType specifies that we are on a site optimized for mobile,
// then we want to return specially crafted defaults for the viewport info.
nsCOMPtr<nsIDOMDocumentType> docType;
nsresult rv = GetDoctype(getter_AddRefs(docType));
if (NS_SUCCEEDED(rv) && docType) {
nsAutoString docId;
rv = docType->GetPublicId(docId);
if (NS_SUCCEEDED(rv)) {
if ((docId.Find("WAP") != -1) ||
(docId.Find("Mobile") != -1) ||
(docId.Find("WML") != -1))
{
// We're making an assumption that the docType can't change here
mViewportType = DisplayWidthHeight;
return nsViewportInfo(aDisplaySize,
defaultScale,
/*allowZoom*/true,
/*allowDoubleTapZoom*/false);
}
}
}
nsAutoString handheldFriendly;
GetHeaderData(nsGkAtoms::handheldFriendly, handheldFriendly);
if (handheldFriendly.EqualsLiteral("true")) {
mViewportType = DisplayWidthHeight;
return nsViewportInfo(aDisplaySize,
defaultScale,
/*allowZoom*/true,
/*allowDoubleTapZoom*/false);
}
}
nsAutoString minScaleStr;
GetHeaderData(nsGkAtoms::viewport_minimum_scale, minScaleStr);
nsresult errorCode;
mScaleMinFloat = LayoutDeviceToScreenScale(minScaleStr.ToFloat(&errorCode));
if (NS_FAILED(errorCode)) {
mScaleMinFloat = kViewportMinScale;
}
mScaleMinFloat = mozilla::clamped(
mScaleMinFloat, kViewportMinScale, kViewportMaxScale);
nsAutoString maxScaleStr;
GetHeaderData(nsGkAtoms::viewport_maximum_scale, maxScaleStr);
// We define a special error code variable for the scale and max scale,
// because they are used later (see the width calculations).
nsresult scaleMaxErrorCode;
mScaleMaxFloat = LayoutDeviceToScreenScale(maxScaleStr.ToFloat(&scaleMaxErrorCode));
if (NS_FAILED(scaleMaxErrorCode)) {
mScaleMaxFloat = kViewportMaxScale;
}
mScaleMaxFloat = mozilla::clamped(
mScaleMaxFloat, kViewportMinScale, kViewportMaxScale);
nsAutoString scaleStr;
GetHeaderData(nsGkAtoms::viewport_initial_scale, scaleStr);
nsresult scaleErrorCode;
mScaleFloat = LayoutDeviceToScreenScale(scaleStr.ToFloat(&scaleErrorCode));
nsAutoString widthStr, heightStr;
GetHeaderData(nsGkAtoms::viewport_height, heightStr);
GetHeaderData(nsGkAtoms::viewport_width, widthStr);
mAutoSize = false;
if (widthStr.EqualsLiteral("device-width")) {
mAutoSize = true;
}
if (widthStr.IsEmpty() &&
(heightStr.EqualsLiteral("device-height") ||
(mScaleFloat.scale == 1.0)))
{
mAutoSize = true;
}
nsresult widthErrorCode, heightErrorCode;
mViewportSize.width = widthStr.ToInteger(&widthErrorCode);
mViewportSize.height = heightStr.ToInteger(&heightErrorCode);
// If width or height has not been set to a valid number by this point,
// fall back to a default value.
mValidWidth = (!widthStr.IsEmpty() && NS_SUCCEEDED(widthErrorCode) && mViewportSize.width > 0);
mValidHeight = (!heightStr.IsEmpty() && NS_SUCCEEDED(heightErrorCode) && mViewportSize.height > 0);
mAllowZoom = true;
nsAutoString userScalable;
GetHeaderData(nsGkAtoms::viewport_user_scalable, userScalable);
if ((userScalable.EqualsLiteral("0")) ||
(userScalable.EqualsLiteral("no")) ||
(userScalable.EqualsLiteral("false"))) {
mAllowZoom = false;
}
mAllowDoubleTapZoom = mAllowZoom;
mScaleStrEmpty = scaleStr.IsEmpty();
mWidthStrEmpty = widthStr.IsEmpty();
mValidScaleFloat = !scaleStr.IsEmpty() && NS_SUCCEEDED(scaleErrorCode);
mValidMaxScale = !maxScaleStr.IsEmpty() && NS_SUCCEEDED(scaleMaxErrorCode);
mViewportType = Specified;
}
case Specified:
default:
CSSSize size = mViewportSize;
if (!mValidWidth) {
if (mValidHeight && !aDisplaySize.IsEmpty()) {
size.width = size.height * aDisplaySize.width / aDisplaySize.height;
} else {
// Stretch CSS pixel size of viewport to keep device pixel size
// unchanged after full zoom applied.
// See bug 974242.
size.width = Preferences::GetInt("browser.viewport.desktopWidth",
kViewportDefaultScreenWidth) / fullZoom;
}
}
if (!mValidHeight) {
if (!aDisplaySize.IsEmpty()) {
size.height = size.width * aDisplaySize.height / aDisplaySize.width;
} else {
size.height = size.width;
}
}
CSSToScreenScale scaleFloat = mScaleFloat * layoutDeviceScale;
CSSToScreenScale scaleMinFloat = mScaleMinFloat * layoutDeviceScale;
CSSToScreenScale scaleMaxFloat = mScaleMaxFloat * layoutDeviceScale;
if (mAutoSize) {
// aDisplaySize is in screen pixels; convert them to CSS pixels for the viewport size.
CSSToScreenScale defaultPixelScale = layoutDeviceScale * LayoutDeviceToScreenScale(1.0f);
size = ScreenSize(aDisplaySize) / defaultPixelScale;
}
size.width = clamped(size.width, float(kViewportMinSize.width), float(kViewportMaxSize.width));
// Also recalculate the default zoom, if it wasn't specified in the metadata,
// and the width is specified.
if (mScaleStrEmpty && !mWidthStrEmpty) {
CSSToScreenScale defaultScale(float(aDisplaySize.width) / size.width);
scaleFloat = (scaleFloat > defaultScale) ? scaleFloat : defaultScale;
}
size.height = clamped(size.height, float(kViewportMinSize.height), float(kViewportMaxSize.height));
// We need to perform a conversion, but only if the initial or maximum
// scale were set explicitly by the user.
if (mValidScaleFloat) {
CSSSize displaySize = ScreenSize(aDisplaySize) / scaleFloat;
size.width = std::max(size.width, displaySize.width);
size.height = std::max(size.height, displaySize.height);
} else if (mValidMaxScale) {
CSSSize displaySize = ScreenSize(aDisplaySize) / scaleMaxFloat;
size.width = std::max(size.width, displaySize.width);
size.height = std::max(size.height, displaySize.height);
}
return nsViewportInfo(scaleFloat, scaleMinFloat, scaleMaxFloat, size,
mAutoSize, mAllowZoom, mAllowDoubleTapZoom);
}
}
EventListenerManager*
nsDocument::GetOrCreateListenerManager()
{
if (!mListenerManager) {
mListenerManager =
new EventListenerManager(static_cast<EventTarget*>(this));
SetFlags(NODE_HAS_LISTENERMANAGER);
}
return mListenerManager;
}
EventListenerManager*
nsDocument::GetExistingListenerManager() const
{
return mListenerManager;
}
nsresult
nsDocument::PreHandleEvent(EventChainPreVisitor& aVisitor)
{
aVisitor.mCanHandle = true;
// FIXME! This is a hack to make middle mouse paste working also in Editor.
// Bug 329119
aVisitor.mForceContentDispatch = true;
// Load events must not propagate to |window| object, see bug 335251.
if (aVisitor.mEvent->message != NS_LOAD) {
nsGlobalWindow* window = static_cast<nsGlobalWindow*>(GetWindow());
aVisitor.mParentTarget =
window ? window->GetTargetForEventTargetChain() : nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocument::CreateEvent(const nsAString& aEventType, nsIDOMEvent** aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
ErrorResult rv;
*aReturn = nsIDocument::CreateEvent(aEventType, rv).take();
return rv.ErrorCode();
}
already_AddRefed<Event>
nsIDocument::CreateEvent(const nsAString& aEventType, ErrorResult& rv) const
{
nsIPresShell *shell = GetShell();
nsPresContext *presContext = nullptr;
if (shell) {
// Retrieve the context
presContext = shell->GetPresContext();
}
// Create event even without presContext.
nsCOMPtr<nsIDOMEvent> ev;
rv = EventDispatcher::CreateEvent(const_cast<nsIDocument*>(this),
presContext, nullptr, aEventType,
getter_AddRefs(ev));
if (!ev) {
return nullptr;
}
WidgetEvent* e = ev->GetInternalNSEvent();
e->mFlags.mBubbles = false;
e->mFlags.mCancelable = false;
return dont_AddRef(ev.forget().take()->InternalDOMEvent());
}
void
nsDocument::FlushPendingNotifications(mozFlushType aType)
{
nsDocumentOnStack dos(this);
// We need to flush the sink for non-HTML documents (because the XML
// parser still does insertion with deferred notifications). We
// also need to flush the sink if this is a layout-related flush, to
// make sure that layout is started as needed. But we can skip that
// part if we have no presshell or if it's already done an initial
// reflow.
if ((!IsHTML() ||
(aType > Flush_ContentAndNotify && mPresShell &&
!mPresShell->DidInitialize())) &&
(mParser || mWeakSink)) {
nsCOMPtr<nsIContentSink> sink;
if (mParser) {
sink = mParser->GetContentSink();
} else {
sink = do_QueryReferent(mWeakSink);
if (!sink) {
mWeakSink = nullptr;
}
}
// Determine if it is safe to flush the sink notifications
// by determining if it safe to flush all the presshells.
if (sink && (aType == Flush_Content || IsSafeToFlush())) {
sink->FlushPendingNotifications(aType);
}
}
// Should we be flushing pending binding constructors in here?
if (aType <= Flush_ContentAndNotify) {
// Nothing to do here
return;
}
// If we have a parent we must flush the parent too to ensure that our
// container is reflowed if its size was changed. But if it's not safe to
// flush ourselves, then don't flush the parent, since that can cause things
// like resizes of our frame's widget, which we can't handle while flushing
// is unsafe.
// Since media queries mean that a size change of our container can
// affect style, we need to promote a style flush on ourself to a
// layout flush on our parent, since we need our container to be the
// correct size to determine the correct style.
if (mParentDocument && IsSafeToFlush()) {
mozFlushType parentType = aType;
if (aType >= Flush_Style)
parentType = std::max(Flush_Layout, aType);
mParentDocument->FlushPendingNotifications(parentType);
}
// We can optimize away getting our presshell and calling
// FlushPendingNotifications on it if we don't need a flush of the sort we're
// looking at. The one exception is if mInFlush is true, because in that
// case we might have set mNeedStyleFlush and mNeedLayoutFlush to false
// already but the presshell hasn't actually done the corresponding work yet.
// So if mInFlush and reentering this code, we need to flush the presshell.
if (mNeedStyleFlush ||
(mNeedLayoutFlush && aType >= Flush_InterruptibleLayout) ||
aType >= Flush_Display ||
mInFlush) {
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
mNeedStyleFlush = false;
mNeedLayoutFlush = mNeedLayoutFlush && (aType < Flush_InterruptibleLayout);
// mInFlush is a bitfield, so can't us AutoRestore here. But we
// need to keep track of multi-level reentry correctly, so need
// to restore the old mInFlush value.
bool oldInFlush = mInFlush;
mInFlush = true;
shell->FlushPendingNotifications(aType);
mInFlush = oldInFlush;
}
}
}
static bool
Copy(nsIDocument* aDocument, void* aData)
{
nsTArray<nsCOMPtr<nsIDocument> >* resources =
static_cast<nsTArray<nsCOMPtr<nsIDocument> >* >(aData);
resources->AppendElement(aDocument);
return true;
}
void
nsDocument::FlushExternalResources(mozFlushType aType)
{
NS_ASSERTION(aType >= Flush_Style,
"should only need to flush for style or higher in external resources");
if (GetDisplayDocument()) {
return;
}
nsTArray<nsCOMPtr<nsIDocument> > resources;
EnumerateExternalResources(Copy, &resources);
for (uint32_t i = 0; i < resources.Length(); i++) {
resources[i]->FlushPendingNotifications(aType);
}
}
void
nsDocument::SetXMLDeclaration(const char16_t *aVersion,
const char16_t *aEncoding,
const int32_t aStandalone)
{
if (!aVersion || *aVersion == '\0') {
mXMLDeclarationBits = 0;
return;
}
mXMLDeclarationBits = XML_DECLARATION_BITS_DECLARATION_EXISTS;
if (aEncoding && *aEncoding != '\0') {
mXMLDeclarationBits |= XML_DECLARATION_BITS_ENCODING_EXISTS;
}
if (aStandalone == 1) {
mXMLDeclarationBits |= XML_DECLARATION_BITS_STANDALONE_EXISTS |
XML_DECLARATION_BITS_STANDALONE_YES;
}
else if (aStandalone == 0) {
mXMLDeclarationBits |= XML_DECLARATION_BITS_STANDALONE_EXISTS;
}
}
void
nsDocument::GetXMLDeclaration(nsAString& aVersion, nsAString& aEncoding,
nsAString& aStandalone)
{
aVersion.Truncate();
aEncoding.Truncate();
aStandalone.Truncate();
if (!(mXMLDeclarationBits & XML_DECLARATION_BITS_DECLARATION_EXISTS)) {
return;
}
// always until we start supporting 1.1 etc.
aVersion.AssignLiteral("1.0");
if (mXMLDeclarationBits & XML_DECLARATION_BITS_ENCODING_EXISTS) {
// This is what we have stored, not necessarily what was written
// in the original
GetCharacterSet(aEncoding);
}
if (mXMLDeclarationBits & XML_DECLARATION_BITS_STANDALONE_EXISTS) {
if (mXMLDeclarationBits & XML_DECLARATION_BITS_STANDALONE_YES) {
aStandalone.AssignLiteral("yes");
} else {
aStandalone.AssignLiteral("no");
}
}
}
bool
nsDocument::IsScriptEnabled()
{
// If this document is sandboxed without 'allow-scripts'
// script is not enabled
if (mSandboxFlags & SANDBOXED_SCRIPTS) {
return false;
}
nsCOMPtr<nsIScriptSecurityManager> sm(do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID));
NS_ENSURE_TRUE(sm, false);
nsCOMPtr<nsIScriptGlobalObject> globalObject = do_QueryInterface(GetInnerWindow());
if (!globalObject && mMasterDocument) {
globalObject = do_QueryInterface(mMasterDocument->GetInnerWindow());
}
NS_ENSURE_TRUE(globalObject && globalObject->GetGlobalJSObject(), false);
return sm->ScriptAllowed(globalObject->GetGlobalJSObject());
}
nsRadioGroupStruct*
nsDocument::GetRadioGroupInternal(const nsAString& aName) const
{
#ifdef DEBUG
if (IsHTML()) {
nsAutoString lcName;
ToLowerCase(aName, lcName);
MOZ_ASSERT(aName == lcName);
}
#endif
nsRadioGroupStruct* radioGroup;
if (!mRadioGroups.Get(aName, &radioGroup)) {
return nullptr;
}
return radioGroup;
}
nsRadioGroupStruct*
nsDocument::GetRadioGroup(const nsAString& aName) const
{
nsAutoString tmKey(aName);
if (IsHTML()) {
ToLowerCase(tmKey); //should case-insensitive.
}
return GetRadioGroupInternal(tmKey);
}
nsRadioGroupStruct*
nsDocument::GetOrCreateRadioGroup(const nsAString& aName)
{
nsAutoString tmKey(aName);
if (IsHTML()) {
ToLowerCase(tmKey); //should case-insensitive.
}
if (nsRadioGroupStruct* radioGroup = GetRadioGroupInternal(tmKey)) {
return radioGroup;
}
nsAutoPtr<nsRadioGroupStruct> newRadioGroup(new nsRadioGroupStruct());
mRadioGroups.Put(tmKey, newRadioGroup);
return newRadioGroup.forget();
}
void
nsDocument::SetCurrentRadioButton(const nsAString& aName,
HTMLInputElement* aRadio)
{
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mSelectedRadioButton = aRadio;
}
HTMLInputElement*
nsDocument::GetCurrentRadioButton(const nsAString& aName)
{
return GetOrCreateRadioGroup(aName)->mSelectedRadioButton;
}
NS_IMETHODIMP
nsDocument::GetNextRadioButton(const nsAString& aName,
const bool aPrevious,
HTMLInputElement* aFocusedRadio,
HTMLInputElement** aRadioOut)
{
// XXX Can we combine the HTML radio button method impls of
// nsDocument and nsHTMLFormControl?
// XXX Why is HTML radio button stuff in nsDocument, as
// opposed to nsHTMLDocument?
*aRadioOut = nullptr;
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
// Return the radio button relative to the focused radio button.
// If no radio is focused, get the radio relative to the selected one.
nsRefPtr<HTMLInputElement> currentRadio;
if (aFocusedRadio) {
currentRadio = aFocusedRadio;
}
else {
currentRadio = radioGroup->mSelectedRadioButton;
if (!currentRadio) {
return NS_ERROR_FAILURE;
}
}
int32_t index = radioGroup->mRadioButtons.IndexOf(currentRadio);
if (index < 0) {
return NS_ERROR_FAILURE;
}
int32_t numRadios = radioGroup->mRadioButtons.Count();
nsRefPtr<HTMLInputElement> radio;
do {
if (aPrevious) {
if (--index < 0) {
index = numRadios -1;
}
}
else if (++index >= numRadios) {
index = 0;
}
NS_ASSERTION(static_cast<nsGenericHTMLFormElement*>(radioGroup->mRadioButtons[index])->IsHTML(nsGkAtoms::input),
"mRadioButtons holding a non-radio button");
radio = static_cast<HTMLInputElement*>(radioGroup->mRadioButtons[index]);
} while (radio->Disabled() && radio != currentRadio);
radio.forget(aRadioOut);
return NS_OK;
}
void
nsDocument::AddToRadioGroup(const nsAString& aName,
nsIFormControl* aRadio)
{
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mRadioButtons.AppendObject(aRadio);
nsCOMPtr<nsIContent> element = do_QueryInterface(aRadio);
NS_ASSERTION(element, "radio controls have to be content elements");
if (element->HasAttr(kNameSpaceID_None, nsGkAtoms::required)) {
radioGroup->mRequiredRadioCount++;
}
}
void
nsDocument::RemoveFromRadioGroup(const nsAString& aName,
nsIFormControl* aRadio)
{
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mRadioButtons.RemoveObject(aRadio);
nsCOMPtr<nsIContent> element = do_QueryInterface(aRadio);
NS_ASSERTION(element, "radio controls have to be content elements");
if (element->HasAttr(kNameSpaceID_None, nsGkAtoms::required)) {
NS_ASSERTION(radioGroup->mRequiredRadioCount != 0,
"mRequiredRadioCount about to wrap below 0!");
radioGroup->mRequiredRadioCount--;
}
}
NS_IMETHODIMP
nsDocument::WalkRadioGroup(const nsAString& aName,
nsIRadioVisitor* aVisitor,
bool aFlushContent)
{
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
for (int i = 0; i < radioGroup->mRadioButtons.Count(); i++) {
if (!aVisitor->Visit(radioGroup->mRadioButtons[i])) {
return NS_OK;
}
}
return NS_OK;
}
uint32_t
nsDocument::GetRequiredRadioCount(const nsAString& aName) const
{
nsRadioGroupStruct* radioGroup = GetRadioGroup(aName);
return radioGroup ? radioGroup->mRequiredRadioCount : 0;
}
void
nsDocument::RadioRequiredWillChange(const nsAString& aName, bool aRequiredAdded)
{
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
if (aRequiredAdded) {
radioGroup->mRequiredRadioCount++;
} else {
NS_ASSERTION(radioGroup->mRequiredRadioCount != 0,
"mRequiredRadioCount about to wrap below 0!");
radioGroup->mRequiredRadioCount--;
}
}
bool
nsDocument::GetValueMissingState(const nsAString& aName) const
{
nsRadioGroupStruct* radioGroup = GetRadioGroup(aName);
return radioGroup && radioGroup->mGroupSuffersFromValueMissing;
}
void
nsDocument::SetValueMissingState(const nsAString& aName, bool aValue)
{
nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
radioGroup->mGroupSuffersFromValueMissing = aValue;
}
void
nsDocument::RetrieveRelevantHeaders(nsIChannel *aChannel)
{
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel);
PRTime modDate = 0;
nsresult rv;
if (httpChannel) {
nsAutoCString tmp;
rv = httpChannel->GetResponseHeader(NS_LITERAL_CSTRING("last-modified"),
tmp);
if (NS_SUCCEEDED(rv)) {
PRTime time;
PRStatus st = PR_ParseTimeString(tmp.get(), true, &time);
if (st == PR_SUCCESS) {
modDate = time;
}
}
// The misspelled key 'referer' is as per the HTTP spec
rv = httpChannel->GetRequestHeader(NS_LITERAL_CSTRING("referer"),
mReferrer);
if (NS_FAILED(rv)) {
mReferrer.Truncate();
}
static const char *const headers[] = {
"default-style",
"content-style-type",
"content-language",
"content-disposition",
"refresh",
"x-dns-prefetch-control",
"x-frame-options",
// add more http headers if you need
// XXXbz don't add content-location support without reading bug
// 238654 and its dependencies/dups first.
0
};
nsAutoCString headerVal;
const char *const *name = headers;
while (*name) {
rv =
httpChannel->GetResponseHeader(nsDependentCString(*name), headerVal);
if (NS_SUCCEEDED(rv) && !headerVal.IsEmpty()) {
nsCOMPtr<nsIAtom> key = do_GetAtom(*name);
SetHeaderData(key, NS_ConvertASCIItoUTF16(headerVal));
}
++name;
}
} else {
nsCOMPtr<nsIFileChannel> fileChannel = do_QueryInterface(aChannel);
if (fileChannel) {
nsCOMPtr<nsIFile> file;
fileChannel->GetFile(getter_AddRefs(file));
if (file) {
PRTime msecs;
rv = file->GetLastModifiedTime(&msecs);
if (NS_SUCCEEDED(rv)) {
modDate = msecs * int64_t(PR_USEC_PER_MSEC);
}
}
} else {
nsAutoCString contentDisp;
rv = aChannel->GetContentDispositionHeader(contentDisp);
if (NS_SUCCEEDED(rv)) {
SetHeaderData(nsGkAtoms::headerContentDisposition,
NS_ConvertASCIItoUTF16(contentDisp));
}
}
}
if (modDate == 0) {
// We got nothing from our attempt to ask nsIFileChannel and
// nsIHttpChannel for the last modified time. Return the current
// time.
modDate = PR_Now();
}
mLastModified.Truncate();
if (modDate != 0) {
PRExplodedTime prtime;
PR_ExplodeTime(modDate, PR_LocalTimeParameters, &prtime);
// "MM/DD/YYYY hh:mm:ss"
char formatedTime[24];
if (PR_snprintf(formatedTime, sizeof(formatedTime),
"%02ld/%02ld/%04hd %02ld:%02ld:%02ld",
prtime.tm_month + 1, prtime.tm_mday, prtime.tm_year,
prtime.tm_hour , prtime.tm_min, prtime.tm_sec)) {
CopyASCIItoUTF16(nsDependentCString(formatedTime), mLastModified);
}
}
}
nsresult
nsDocument::CreateElem(const nsAString& aName, nsIAtom *aPrefix, int32_t aNamespaceID,
nsIContent **aResult)
{
#ifdef DEBUG
nsAutoString qName;
if (aPrefix) {
aPrefix->ToString(qName);
qName.Append(':');
}
qName.Append(aName);
// Note: "a:b:c" is a valid name in non-namespaces XML, and
// nsDocument::CreateElement can call us with such a name and no prefix,
// which would cause an error if we just used true here.
bool nsAware = aPrefix != nullptr || aNamespaceID != GetDefaultNamespaceID();
NS_ASSERTION(NS_SUCCEEDED(nsContentUtils::CheckQName(qName, nsAware)),
"Don't pass invalid prefixes to nsDocument::CreateElem, "
"check caller.");
#endif
*aResult = nullptr;
nsRefPtr<mozilla::dom::NodeInfo> nodeInfo;
mNodeInfoManager->GetNodeInfo(aName, aPrefix, aNamespaceID,
nsIDOMNode::ELEMENT_NODE,
getter_AddRefs(nodeInfo));
NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<Element> element;
nsresult rv = NS_NewElement(getter_AddRefs(element), nodeInfo.forget(),
NOT_FROM_PARSER);
element.forget(aResult);
return rv;
}
bool
nsDocument::IsSafeToFlush() const
{
nsIPresShell* shell = GetShell();
if (!shell)
return true;
return shell->IsSafeToFlush();
}
void
nsDocument::Sanitize()
{
// Sanitize the document by resetting all password fields and any form
// fields with autocomplete=off to their default values. We do this now,
// instead of when the presentation is restored, to offer some protection
// in case there is ever an exploit that allows a cached document to be
// accessed from a different document.
// First locate all input elements, regardless of whether they are
// in a form, and reset the password and autocomplete=off elements.
nsRefPtr<nsContentList> nodes = GetElementsByTagName(NS_LITERAL_STRING("input"));
nsCOMPtr<nsIContent> item;
nsAutoString value;
uint32_t length = nodes->Length(true);
for (uint32_t i = 0; i < length; ++i) {
NS_ASSERTION(nodes->Item(i), "null item in node list!");
nsRefPtr<HTMLInputElement> input = HTMLInputElement::FromContentOrNull(nodes->Item(i));
if (!input)
continue;
bool resetValue = false;
input->GetAttribute(NS_LITERAL_STRING("autocomplete"), value);
if (value.LowerCaseEqualsLiteral("off")) {
resetValue = true;
} else {
input->GetType(value);
if (value.LowerCaseEqualsLiteral("password"))
resetValue = true;
}
if (resetValue) {
input->Reset();
}
}
// Now locate all _form_ elements that have autocomplete=off and reset them
nodes = GetElementsByTagName(NS_LITERAL_STRING("form"));
length = nodes->Length(true);
for (uint32_t i = 0; i < length; ++i) {
NS_ASSERTION(nodes->Item(i), "null item in nodelist");
nsCOMPtr<nsIDOMHTMLFormElement> form = do_QueryInterface(nodes->Item(i));
if (!form)
continue;
nodes->Item(i)->AsElement()->GetAttr(kNameSpaceID_None,
nsGkAtoms::autocomplete, value);
if (value.LowerCaseEqualsLiteral("off"))
form->Reset();
}
}
struct SubDocEnumArgs
{
nsIDocument::nsSubDocEnumFunc callback;
void *data;
};
static PLDHashOperator
SubDocHashEnum(PLDHashTable *table, PLDHashEntryHdr *hdr,
uint32_t number, void *arg)
{
SubDocMapEntry *entry = static_cast<SubDocMapEntry*>(hdr);
SubDocEnumArgs *args = static_cast<SubDocEnumArgs*>(arg);
nsIDocument *subdoc = entry->mSubDocument;
bool next = subdoc ? args->callback(subdoc, args->data) : true;
return next ? PL_DHASH_NEXT : PL_DHASH_STOP;
}
void
nsDocument::EnumerateSubDocuments(nsSubDocEnumFunc aCallback, void *aData)
{
if (mSubDocuments) {
SubDocEnumArgs args = { aCallback, aData };
PL_DHashTableEnumerate(mSubDocuments, SubDocHashEnum, &args);
}
}
static PLDHashOperator
CanCacheSubDocument(PLDHashTable *table, PLDHashEntryHdr *hdr,
uint32_t number, void *arg)
{
SubDocMapEntry *entry = static_cast<SubDocMapEntry*>(hdr);
bool *canCacheArg = static_cast<bool*>(arg);
nsIDocument *subdoc = entry->mSubDocument;
// The aIgnoreRequest we were passed is only for us, so don't pass it on.
bool canCache = subdoc ? subdoc->CanSavePresentation(nullptr) : false;
if (!canCache) {
*canCacheArg = false;
return PL_DHASH_STOP;
}
return PL_DHASH_NEXT;
}
#ifdef DEBUG_bryner
#define DEBUG_PAGE_CACHE
#endif
bool
nsDocument::CanSavePresentation(nsIRequest *aNewRequest)
{
if (EventHandlingSuppressed()) {
return false;
}
nsPIDOMWindow* win = GetInnerWindow();
if (win && win->TimeoutSuspendCount()) {
return false;
}
// Check our event listener manager for unload/beforeunload listeners.
nsCOMPtr<EventTarget> piTarget = do_QueryInterface(mScriptGlobalObject);
if (piTarget) {
EventListenerManager* manager = piTarget->GetExistingListenerManager();
if (manager && manager->HasUnloadListeners()) {
return false;
}
}
// Check if we have pending network requests
nsCOMPtr<nsILoadGroup> loadGroup = GetDocumentLoadGroup();
if (loadGroup) {
nsCOMPtr<nsISimpleEnumerator> requests;
loadGroup->GetRequests(getter_AddRefs(requests));
bool hasMore = false;
// We want to bail out if we have any requests other than aNewRequest (or
// in the case when aNewRequest is a part of a multipart response the base
// channel the multipart response is coming in on).
nsCOMPtr<nsIChannel> baseChannel;
nsCOMPtr<nsIMultiPartChannel> part(do_QueryInterface(aNewRequest));
if (part) {
part->GetBaseChannel(getter_AddRefs(baseChannel));
}
while (NS_SUCCEEDED(requests->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> elem;
requests->GetNext(getter_AddRefs(elem));
nsCOMPtr<nsIRequest> request = do_QueryInterface(elem);
if (request && request != aNewRequest && request != baseChannel) {
#ifdef DEBUG_PAGE_CACHE
nsAutoCString requestName, docSpec;
request->GetName(requestName);
if (mDocumentURI)
mDocumentURI->GetSpec(docSpec);
printf("document %s has request %s\n",
docSpec.get(), requestName.get());
#endif
return false;
}
}
}
#ifdef MOZ_MEDIA_NAVIGATOR
// Check if we have active GetUserMedia use
if (MediaManager::Exists() && win &&
MediaManager::Get()->IsWindowStillActive(win->WindowID())) {
return false;
}
#endif // MOZ_MEDIA_NAVIGATOR
#ifdef MOZ_WEBRTC
// Check if we have active PeerConnections
nsCOMPtr<IPeerConnectionManager> pcManager =
do_GetService(IPEERCONNECTION_MANAGER_CONTRACTID);
if (pcManager && win) {
bool active;
pcManager->HasActivePeerConnection(win->WindowID(), &active);
if (active) {
return false;
}
}
#endif // MOZ_WEBRTC
#ifdef MOZ_EME
// Don't save presentations for documents containing EME content, so that
// CDMs reliably shutdown upon user navigation.
if (ContainsEMEContent()) {
return false;
}
#endif
bool canCache = true;
if (mSubDocuments)
PL_DHashTableEnumerate(mSubDocuments, CanCacheSubDocument, &canCache);
return canCache;
}
void
nsDocument::Destroy()
{
// The ContentViewer wants to release the document now. So, tell our content
// to drop any references to the document so that it can be destroyed.
if (mIsGoingAway)
return;
mIsGoingAway = true;
RemovedFromDocShell();
bool oldVal = mInUnlinkOrDeletion;
mInUnlinkOrDeletion = true;
uint32_t i, count = mChildren.ChildCount();
for (i = 0; i < count; ++i) {
mChildren.ChildAt(i)->DestroyContent();
}
mInUnlinkOrDeletion = oldVal;
mLayoutHistoryState = nullptr;
// Shut down our external resource map. We might not need this for
// leak-fixing if we fix nsDocumentViewer to do cycle-collection, but
// tearing down all those frame trees right now is the right thing to do.
mExternalResourceMap.Shutdown();
mRegistry = nullptr;
nsCOMPtr<nsIServiceWorkerManager> swm = mozilla::services::GetServiceWorkerManager();
if (swm) {
swm->MaybeStopControlling(this);
}
// XXX We really should let cycle collection do this, but that currently still
// leaks (see https://bugzilla.mozilla.org/show_bug.cgi?id=406684).
ReleaseWrapper(static_cast<nsINode*>(this));
}
void
nsDocument::RemovedFromDocShell()
{
if (mRemovedFromDocShell)
return;
mRemovedFromDocShell = true;
EnumerateActivityObservers(NotifyActivityChanged, nullptr);
uint32_t i, count = mChildren.ChildCount();
for (i = 0; i < count; ++i) {
mChildren.ChildAt(i)->SaveSubtreeState();
}
}
already_AddRefed<nsILayoutHistoryState>
nsDocument::GetLayoutHistoryState() const
{
nsCOMPtr<nsILayoutHistoryState> state;
if (!mScriptGlobalObject) {
state = mLayoutHistoryState;
} else {
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
if (docShell) {
docShell->GetLayoutHistoryState(getter_AddRefs(state));
}
}
return state.forget();
}
void
nsDocument::EnsureOnloadBlocker()
{
// If mScriptGlobalObject is null, we shouldn't be messing with the loadgroup
// -- it's not ours.
if (mOnloadBlockCount != 0 && mScriptGlobalObject) {
nsCOMPtr<nsILoadGroup> loadGroup = GetDocumentLoadGroup();
if (loadGroup) {
// Check first to see if mOnloadBlocker is in the loadgroup.
nsCOMPtr<nsISimpleEnumerator> requests;
loadGroup->GetRequests(getter_AddRefs(requests));
bool hasMore = false;
while (NS_SUCCEEDED(requests->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> elem;
requests->GetNext(getter_AddRefs(elem));
nsCOMPtr<nsIRequest> request = do_QueryInterface(elem);
if (request && request == mOnloadBlocker) {
return;
}
}
// Not in the loadgroup, so add it.
loadGroup->AddRequest(mOnloadBlocker, nullptr);
}
}
}
void
nsDocument::AsyncBlockOnload()
{
while (mAsyncOnloadBlockCount) {
--mAsyncOnloadBlockCount;
BlockOnload();
}
}
void
nsDocument::BlockOnload()
{
if (mDisplayDocument) {
mDisplayDocument->BlockOnload();
return;
}
// If mScriptGlobalObject is null, we shouldn't be messing with the loadgroup
// -- it's not ours.
if (mOnloadBlockCount == 0 && mScriptGlobalObject) {
if (!nsContentUtils::IsSafeToRunScript()) {
// Because AddRequest may lead to OnStateChange calls in chrome,
// block onload only when there are no script blockers.
++mAsyncOnloadBlockCount;
if (mAsyncOnloadBlockCount == 1) {
bool success = nsContentUtils::AddScriptRunner(
NS_NewRunnableMethod(this, &nsDocument::AsyncBlockOnload));
// The script runner shouldn't fail to add. But if somebody broke
// something and it does, we'll thrash at 100% cpu forever. The best
// response is just to ignore the onload blocking request. See bug 579535.
if (!success) {
NS_WARNING("Disaster! Onload blocking script runner failed to add - expect bad things!");
mAsyncOnloadBlockCount = 0;
}
}
return;
}
nsCOMPtr<nsILoadGroup> loadGroup = GetDocumentLoadGroup();
if (loadGroup) {
loadGroup->AddRequest(mOnloadBlocker, nullptr);
}
}
++mOnloadBlockCount;
}
void
nsDocument::UnblockOnload(bool aFireSync)
{
if (mDisplayDocument) {
mDisplayDocument->UnblockOnload(aFireSync);
return;
}
if (mOnloadBlockCount == 0 && mAsyncOnloadBlockCount == 0) {
NS_NOTREACHED("More UnblockOnload() calls than BlockOnload() calls; dropping call");
return;
}
--mOnloadBlockCount;
if (mOnloadBlockCount == 0) {
if (mScriptGlobalObject) {
// Only manipulate the loadgroup in this case, because if mScriptGlobalObject
// is null, it's not ours.
if (aFireSync && mAsyncOnloadBlockCount == 0) {
// Increment mOnloadBlockCount, since DoUnblockOnload will decrement it
++mOnloadBlockCount;
DoUnblockOnload();
} else {
PostUnblockOnloadEvent();
}
} else if (mIsBeingUsedAsImage) {
// To correctly unblock onload for a document that contains an SVG
// image, we need to know when all of the SVG document's resources are
// done loading, in a way comparable to |window.onload|. We fire this
// event to indicate that the SVG should be considered fully loaded.
// Because scripting is disabled on SVG-as-image documents, this event
// is not accessible to content authors. (See bug 837135.)
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(this,
NS_LITERAL_STRING("MozSVGAsImageDocumentLoad"),
false,
false);
asyncDispatcher->PostDOMEvent();
}
}
}
class nsUnblockOnloadEvent : public nsRunnable {
public:
explicit nsUnblockOnloadEvent(nsDocument* aDoc) : mDoc(aDoc) {}
NS_IMETHOD Run() {
mDoc->DoUnblockOnload();
return NS_OK;
}
private:
nsRefPtr<nsDocument> mDoc;
};
void
nsDocument::PostUnblockOnloadEvent()
{
nsCOMPtr<nsIRunnable> evt = new nsUnblockOnloadEvent(this);
nsresult rv = NS_DispatchToCurrentThread(evt);
if (NS_SUCCEEDED(rv)) {
// Stabilize block count so we don't post more events while this one is up
++mOnloadBlockCount;
} else {
NS_WARNING("failed to dispatch nsUnblockOnloadEvent");
}
}
void
nsDocument::DoUnblockOnload()
{
NS_PRECONDITION(!mDisplayDocument,
"Shouldn't get here for resource document");
NS_PRECONDITION(mOnloadBlockCount != 0,
"Shouldn't have a count of zero here, since we stabilized in "
"PostUnblockOnloadEvent");
--mOnloadBlockCount;
if (mOnloadBlockCount != 0) {
// We blocked again after the last unblock. Nothing to do here. We'll
// post a new event when we unblock again.
return;
}
if (mAsyncOnloadBlockCount != 0) {
// We need to wait until the async onload block has been handled.
PostUnblockOnloadEvent();
}
// If mScriptGlobalObject is null, we shouldn't be messing with the loadgroup
// -- it's not ours.
if (mScriptGlobalObject) {
nsCOMPtr<nsILoadGroup> loadGroup = GetDocumentLoadGroup();
if (loadGroup) {
loadGroup->RemoveRequest(mOnloadBlocker, nullptr, NS_OK);
}
}
}
nsIContent*
nsDocument::GetContentInThisDocument(nsIFrame* aFrame) const
{
for (nsIFrame* f = aFrame; f;
f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {
nsIContent* content = f->GetContent();
if (!content || content->IsInAnonymousSubtree())
continue;
if (content->OwnerDoc() == this) {
return content;
}
// We must be in a subdocument so jump directly to the root frame.
// GetParentOrPlaceholderForCrossDoc gets called immediately to jump up to
// the containing document.
f = f->PresContext()->GetPresShell()->GetRootFrame();
}
return nullptr;
}
void
nsDocument::DispatchPageTransition(EventTarget* aDispatchTarget,
const nsAString& aType,
bool aPersisted)
{
if (!aDispatchTarget) {
return;
}
PageTransitionEventInit init;
init.mBubbles = true;
init.mCancelable = true;
init.mPersisted = aPersisted;
nsRefPtr<PageTransitionEvent> event =
PageTransitionEvent::Constructor(this, aType, init);
event->SetTrusted(true);
event->SetTarget(this);
EventDispatcher::DispatchDOMEvent(aDispatchTarget, nullptr, event,
nullptr, nullptr);
}
static bool
NotifyPageShow(nsIDocument* aDocument, void* aData)
{
const bool* aPersistedPtr = static_cast<const bool*>(aData);
aDocument->OnPageShow(*aPersistedPtr, nullptr);
return true;
}
void
nsDocument::OnPageShow(bool aPersisted,
EventTarget* aDispatchStartTarget)
{
mVisible = true;
EnumerateActivityObservers(NotifyActivityChanged, nullptr);
EnumerateExternalResources(NotifyPageShow, &aPersisted);
Element* root = GetRootElement();
if (aPersisted && root) {
// Send out notifications that our <link> elements are attached.
nsRefPtr<nsContentList> links = NS_GetContentList(root,
kNameSpaceID_XHTML,
NS_LITERAL_STRING("link"));
uint32_t linkCount = links->Length(true);
for (uint32_t i = 0; i < linkCount; ++i) {
static_cast<HTMLLinkElement*>(links->Item(i, false))->LinkAdded();
}
}
// See nsIDocument
if (!aDispatchStartTarget) {
// Set mIsShowing before firing events, in case those event handlers
// move us around.
mIsShowing = true;
}
if (mAnimationController) {
mAnimationController->OnPageShow();
}
if (aPersisted) {
SetImagesNeedAnimating(true);
}
UpdateVisibilityState();
nsCOMPtr<EventTarget> target = aDispatchStartTarget;
if (!target) {
target = do_QueryInterface(GetWindow());
}
// Dispatch observer notification to notify observers page is shown.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
nsIPrincipal *principal = GetPrincipal();
os->NotifyObservers(static_cast<nsIDocument*>(this),
nsContentUtils::IsSystemPrincipal(principal) ?
"chrome-page-shown" :
"content-page-shown",
nullptr);
if (!mObservingAppThemeChanged) {
os->AddObserver(this, "app-theme-changed", /* ownsWeak */ false);
mObservingAppThemeChanged = true;
}
DispatchPageTransition(target, NS_LITERAL_STRING("pageshow"), aPersisted);
}
static bool
NotifyPageHide(nsIDocument* aDocument, void* aData)
{
const bool* aPersistedPtr = static_cast<const bool*>(aData);
aDocument->OnPageHide(*aPersistedPtr, nullptr);
return true;
}
static void
DispatchFullScreenChange(nsIDocument* aTarget)
{
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(aTarget,
NS_LITERAL_STRING("mozfullscreenchange"),
true,
false);
asyncDispatcher->PostDOMEvent();
}
void
nsDocument::OnPageHide(bool aPersisted,
EventTarget* aDispatchStartTarget)
{
// Send out notifications that our <link> elements are detached,
// but only if this is not a full unload.
Element* root = GetRootElement();
if (aPersisted && root) {
nsRefPtr<nsContentList> links = NS_GetContentList(root,
kNameSpaceID_XHTML,
NS_LITERAL_STRING("link"));
uint32_t linkCount = links->Length(true);
for (uint32_t i = 0; i < linkCount; ++i) {
static_cast<HTMLLinkElement*>(links->Item(i, false))->LinkRemoved();
}
}
// See nsIDocument
if (!aDispatchStartTarget) {
// Set mIsShowing before firing events, in case those event handlers
// move us around.
mIsShowing = false;
}
if (mAnimationController) {
mAnimationController->OnPageHide();
}
if (aPersisted) {
SetImagesNeedAnimating(false);
}
MozExitPointerLock();
// Now send out a PageHide event.
nsCOMPtr<EventTarget> target = aDispatchStartTarget;
if (!target) {
target = do_QueryInterface(GetWindow());
}
// Dispatch observer notification to notify observers page is hidden.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
if (os) {
nsIPrincipal* principal = GetPrincipal();
os->NotifyObservers(static_cast<nsIDocument*>(this),
nsContentUtils::IsSystemPrincipal(principal) ?
"chrome-page-hidden" :
"content-page-hidden",
nullptr);
os->RemoveObserver(this, "app-theme-changed");
mObservingAppThemeChanged = false;
}
DispatchPageTransition(target, NS_LITERAL_STRING("pagehide"), aPersisted);
mVisible = false;
UpdateVisibilityState();
EnumerateExternalResources(NotifyPageHide, &aPersisted);
EnumerateActivityObservers(NotifyActivityChanged, nullptr);
if (IsFullScreenDoc()) {
// If this document was fullscreen, we should exit fullscreen in this
// doctree branch. This ensures that if the user navigates while in
// fullscreen mode we don't leave its still visible ancestor documents
// in fullscreen mode. So exit fullscreen in the document's fullscreen
// root document, as this will exit fullscreen in all the root's
// descendant documents. Note that documents are removed from the
// doctree by the time OnPageHide() is called, so we must store a
// reference to the root (in nsDocument::mFullscreenRoot) since we can't
// just traverse the doctree to get the root.
nsIDocument::ExitFullscreen(this, /* async */ false);
// Since the document is removed from the doctree before OnPageHide() is
// called, ExitFullscreen() can't traverse from the root down to *this*
// document, so we must manually call CleanupFullscreenState() below too.
// Note that CleanupFullscreenState() clears nsDocument::mFullscreenRoot,
// so we *must* call it after ExitFullscreen(), not before.
// OnPageHide() is called in every hidden (i.e. descendant) document,
// so calling CleanupFullscreenState() here will ensure all hidden
// documents have their fullscreen state reset.
CleanupFullscreenState();
// If anyone was listening to this document's state, advertizing the state
// change would be the least of the politeness.
DispatchFullScreenChange(this);
}
}
void
nsDocument::WillDispatchMutationEvent(nsINode* aTarget)
{
NS_ASSERTION(mSubtreeModifiedDepth != 0 ||
mSubtreeModifiedTargets.Count() == 0,
"mSubtreeModifiedTargets not cleared after dispatching?");
++mSubtreeModifiedDepth;
if (aTarget) {
// MayDispatchMutationEvent is often called just before this method,
// so it has already appended the node to mSubtreeModifiedTargets.
int32_t count = mSubtreeModifiedTargets.Count();
if (!count || mSubtreeModifiedTargets[count - 1] != aTarget) {
mSubtreeModifiedTargets.AppendObject(aTarget);
}
}
}
void
nsDocument::MutationEventDispatched(nsINode* aTarget)
{
--mSubtreeModifiedDepth;
if (mSubtreeModifiedDepth == 0) {
int32_t count = mSubtreeModifiedTargets.Count();
if (!count) {
return;
}
nsPIDOMWindow* window = GetInnerWindow();
if (window &&
!window->HasMutationListeners(NS_EVENT_BITS_MUTATION_SUBTREEMODIFIED)) {
mSubtreeModifiedTargets.Clear();
return;
}
nsCOMArray<nsINode> realTargets;
for (int32_t i = 0; i < count; ++i) {
nsINode* possibleTarget = mSubtreeModifiedTargets[i];
nsCOMPtr<nsIContent> content = do_QueryInterface(possibleTarget);
if (content && content->ChromeOnlyAccess()) {
continue;
}
nsINode* commonAncestor = nullptr;
int32_t realTargetCount = realTargets.Count();
for (int32_t j = 0; j < realTargetCount; ++j) {
commonAncestor =
nsContentUtils::GetCommonAncestor(possibleTarget, realTargets[j]);
if (commonAncestor) {
realTargets.ReplaceObjectAt(commonAncestor, j);
break;
}
}
if (!commonAncestor) {
realTargets.AppendObject(possibleTarget);
}
}
mSubtreeModifiedTargets.Clear();
int32_t realTargetCount = realTargets.Count();
for (int32_t k = 0; k < realTargetCount; ++k) {
InternalMutationEvent mutation(true, NS_MUTATION_SUBTREEMODIFIED);
(new AsyncEventDispatcher(realTargets[k], mutation))->
RunDOMEventWhenSafe();
}
}
}
void
nsDocument::AddStyleRelevantLink(Link* aLink)
{
NS_ASSERTION(aLink, "Passing in a null link. Expect crashes RSN!");
#ifdef DEBUG
nsPtrHashKey<Link>* entry = mStyledLinks.GetEntry(aLink);
NS_ASSERTION(!entry, "Document already knows about this Link!");
mStyledLinksCleared = false;
#endif
(void)mStyledLinks.PutEntry(aLink);
}
void
nsDocument::ForgetLink(Link* aLink)
{
NS_ASSERTION(aLink, "Passing in a null link. Expect crashes RSN!");
#ifdef DEBUG
nsPtrHashKey<Link>* entry = mStyledLinks.GetEntry(aLink);
NS_ASSERTION(entry || mStyledLinksCleared,
"Document knows nothing about this Link!");
#endif
(void)mStyledLinks.RemoveEntry(aLink);
}
void
nsDocument::DestroyElementMaps()
{
#ifdef DEBUG
mStyledLinksCleared = true;
#endif
mStyledLinks.Clear();
mIdentifierMap.Clear();
++mExpandoAndGeneration.generation;
}
static
PLDHashOperator
EnumerateStyledLinks(nsPtrHashKey<Link>* aEntry, void* aArray)
{
LinkArray* array = static_cast<LinkArray*>(aArray);
(void)array->AppendElement(aEntry->GetKey());
return PL_DHASH_NEXT;
}
void
nsDocument::RefreshLinkHrefs()
{
// Get a list of all links we know about. We will reset them, which will
// remove them from the document, so we need a copy of what is in the
// hashtable.
LinkArray linksToNotify(mStyledLinks.Count());
(void)mStyledLinks.EnumerateEntries(EnumerateStyledLinks, &linksToNotify);
// Reset all of our styled links.
nsAutoScriptBlocker scriptBlocker;
for (LinkArray::size_type i = 0; i < linksToNotify.Length(); i++) {
linksToNotify[i]->ResetLinkState(true, linksToNotify[i]->ElementHasHref());
}
}
nsresult
nsDocument::CloneDocHelper(nsDocument* clone) const
{
clone->mIsStaticDocument = mCreatingStaticClone;
// Init document
nsresult rv = clone->Init();
NS_ENSURE_SUCCESS(rv, rv);
if (mCreatingStaticClone) {
nsCOMPtr<nsILoadGroup> loadGroup;
// |mDocumentContainer| is the container of the document that is being
// created and not the original container. See CreateStaticClone function().
nsCOMPtr<nsIDocumentLoader> docLoader(mDocumentContainer);
if (docLoader) {
docLoader->GetLoadGroup(getter_AddRefs(loadGroup));
}
nsCOMPtr<nsIChannel> channel = GetChannel();
nsCOMPtr<nsIURI> uri;
if (channel) {
NS_GetFinalChannelURI(channel, getter_AddRefs(uri));
} else {
uri = nsIDocument::GetDocumentURI();
}
clone->mChannel = channel;
if (uri) {
clone->ResetToURI(uri, loadGroup, NodePrincipal());
}
clone->SetContainer(mDocumentContainer);
}
// Now ensure that our clone has the same URI, base URI, and principal as us.
// We do this after the mCreatingStaticClone block above, because that block
// can set the base URI to an incorrect value in cases when base URI
// information came from the channel. So we override explicitly, and do it
// for all these properties, in case ResetToURI messes with any of the rest of
// them.
clone->nsDocument::SetDocumentURI(nsIDocument::GetDocumentURI());
clone->SetChromeXHRDocURI(mChromeXHRDocURI);
clone->SetPrincipal(NodePrincipal());
clone->mDocumentBaseURI = mDocumentBaseURI;
clone->SetChromeXHRDocBaseURI(mChromeXHRDocBaseURI);
// Set scripting object
bool hasHadScriptObject = true;
nsIScriptGlobalObject* scriptObject =
GetScriptHandlingObject(hasHadScriptObject);
NS_ENSURE_STATE(scriptObject || !hasHadScriptObject);
if (scriptObject) {
clone->SetScriptHandlingObject(scriptObject);
} else {
clone->SetScopeObject(GetScopeObject());
}
// Make the clone a data document
clone->SetLoadedAsData(true);
// Misc state
// State from nsIDocument
clone->mCharacterSet = mCharacterSet;
clone->mCharacterSetSource = mCharacterSetSource;
clone->mCompatMode = mCompatMode;
clone->mBidiOptions = mBidiOptions;
clone->mContentLanguage = mContentLanguage;
clone->SetContentTypeInternal(GetContentTypeInternal());
clone->mSecurityInfo = mSecurityInfo;
// State from nsDocument
clone->mType = mType;
clone->mXMLDeclarationBits = mXMLDeclarationBits;
clone->mBaseTarget = mBaseTarget;
return NS_OK;
}
void
nsDocument::SetReadyStateInternal(ReadyState rs)
{
mReadyState = rs;
if (rs == READYSTATE_UNINITIALIZED) {
// Transition back to uninitialized happens only to keep assertions happy
// right before readyState transitions to something else. Make this
// transition undetectable by Web content.
return;
}
if (mTiming) {
switch (rs) {
case READYSTATE_LOADING:
mTiming->NotifyDOMLoading(nsIDocument::GetDocumentURI());
break;
case READYSTATE_INTERACTIVE:
mTiming->NotifyDOMInteractive(nsIDocument::GetDocumentURI());
break;
case READYSTATE_COMPLETE:
mTiming->NotifyDOMComplete(nsIDocument::GetDocumentURI());
break;
default:
NS_WARNING("Unexpected ReadyState value");
break;
}
}
// At the time of loading start, we don't have timing object, record time.
if (READYSTATE_LOADING == rs) {
mLoadingTimeStamp = mozilla::TimeStamp::Now();
}
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(this, NS_LITERAL_STRING("readystatechange"),
false, false);
asyncDispatcher->RunDOMEventWhenSafe();
}
NS_IMETHODIMP
nsDocument::GetReadyState(nsAString& aReadyState)
{
nsIDocument::GetReadyState(aReadyState);
return NS_OK;
}
void
nsIDocument::GetReadyState(nsAString& aReadyState) const
{
switch(mReadyState) {
case READYSTATE_LOADING :
aReadyState.AssignLiteral(MOZ_UTF16("loading"));
break;
case READYSTATE_INTERACTIVE :
aReadyState.AssignLiteral(MOZ_UTF16("interactive"));
break;
case READYSTATE_COMPLETE :
aReadyState.AssignLiteral(MOZ_UTF16("complete"));
break;
default:
aReadyState.AssignLiteral(MOZ_UTF16("uninitialized"));
}
}
namespace {
struct SuppressArgs
{
nsIDocument::SuppressionType mWhat;
uint32_t mIncrease;
};
}
static bool
SuppressEventHandlingInDocument(nsIDocument* aDocument, void* aData)
{
SuppressArgs* args = static_cast<SuppressArgs*>(aData);
aDocument->SuppressEventHandling(args->mWhat, args->mIncrease);
return true;
}
void
nsDocument::SuppressEventHandling(nsIDocument::SuppressionType aWhat,
uint32_t aIncrease)
{
if (mEventsSuppressed == 0 && mAnimationsPaused == 0 &&
aIncrease != 0 && mPresShell && mScriptGlobalObject) {
RevokeAnimationFrameNotifications();
}
if (aWhat == eAnimationsOnly) {
mAnimationsPaused += aIncrease;
} else {
mEventsSuppressed += aIncrease;
}
SuppressArgs args = { aWhat, aIncrease };
EnumerateSubDocuments(SuppressEventHandlingInDocument, &args);
}
static void
FireOrClearDelayedEvents(nsTArray<nsCOMPtr<nsIDocument> >& aDocuments,
bool aFireEvents)
{
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm)
return;
for (uint32_t i = 0; i < aDocuments.Length(); ++i) {
// NB: Don't bother trying to fire delayed events on documents that were
// closed before this event ran.
if (!aDocuments[i]->EventHandlingSuppressed()) {
fm->FireDelayedEvents(aDocuments[i]);
nsCOMPtr<nsIPresShell> shell = aDocuments[i]->GetShell();
if (shell) {
// Only fire events for active documents.
bool fire = aFireEvents &&
aDocuments[i]->GetInnerWindow() &&
aDocuments[i]->GetInnerWindow()->IsCurrentInnerWindow();
shell->FireOrClearDelayedEvents(fire);
}
}
}
}
void
nsDocument::MaybePreLoadImage(nsIURI* uri, const nsAString &aCrossOriginAttr,
ReferrerPolicy aReferrerPolicy)
{
// Early exit if the img is already present in the img-cache
// which indicates that the "real" load has already started and
// that we shouldn't preload it.
int16_t blockingStatus;
if (nsContentUtils::IsImageInCache(uri, static_cast<nsIDocument *>(this)) ||
!nsContentUtils::CanLoadImage(uri, static_cast<nsIDocument *>(this),
this, NodePrincipal(), &blockingStatus)) {
return;
}
nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL;
switch (Element::StringToCORSMode(aCrossOriginAttr)) {
case CORS_NONE:
// Nothing to do
break;
case CORS_ANONYMOUS:
loadFlags |= imgILoader::LOAD_CORS_ANONYMOUS;
break;
case CORS_USE_CREDENTIALS:
loadFlags |= imgILoader::LOAD_CORS_USE_CREDENTIALS;
break;
default:
MOZ_CRASH("Unknown CORS mode!");
}
// Image not in cache - trigger preload
nsRefPtr<imgRequestProxy> request;
nsresult rv =
nsContentUtils::LoadImage(uri,
this,
NodePrincipal(),
mDocumentURI, // uri of document used as referrer
aReferrerPolicy,
nullptr, // no observer
loadFlags,
NS_LITERAL_STRING("img"),
getter_AddRefs(request));
// Pin image-reference to avoid evicting it from the img-cache before
// the "real" load occurs. Unpinned in DispatchContentLoadedEvents and
// unlink
if (NS_SUCCEEDED(rv)) {
mPreloadingImages.Put(uri, request.forget());
}
}
void
nsDocument::ForgetImagePreload(nsIURI* aURI)
{
// Checking count is faster than hashing the URI in the common
// case of empty table.
if (mPreloadingImages.Count() != 0) {
nsCOMPtr<imgIRequest> req;
mPreloadingImages.Remove(aURI, getter_AddRefs(req));
if (req) {
// Make sure to cancel the request so imagelib knows it's gone.
req->CancelAndForgetObserver(NS_BINDING_ABORTED);
}
}
}
EventStates
nsDocument::GetDocumentState()
{
if (!mGotDocumentState.HasState(NS_DOCUMENT_STATE_RTL_LOCALE)) {
if (IsDocumentRightToLeft()) {
mDocumentState |= NS_DOCUMENT_STATE_RTL_LOCALE;
}
mGotDocumentState |= NS_DOCUMENT_STATE_RTL_LOCALE;
}
if (!mGotDocumentState.HasState(NS_DOCUMENT_STATE_WINDOW_INACTIVE)) {
nsIPresShell* shell = GetShell();
if (shell && shell->GetPresContext() &&
shell->GetPresContext()->IsTopLevelWindowInactive()) {
mDocumentState |= NS_DOCUMENT_STATE_WINDOW_INACTIVE;
}
mGotDocumentState |= NS_DOCUMENT_STATE_WINDOW_INACTIVE;
}
return mDocumentState;
}
namespace {
/**
* Stub for LoadSheet(), since all we want is to get the sheet into
* the CSSLoader's style cache
*/
class StubCSSLoaderObserver MOZ_FINAL : public nsICSSLoaderObserver {
~StubCSSLoaderObserver() {}
public:
NS_IMETHOD
StyleSheetLoaded(CSSStyleSheet*, bool, nsresult)
{
return NS_OK;
}
NS_DECL_ISUPPORTS
};
NS_IMPL_ISUPPORTS(StubCSSLoaderObserver, nsICSSLoaderObserver)
}
void
nsDocument::PreloadStyle(nsIURI* uri, const nsAString& charset,
const nsAString& aCrossOriginAttr,
const ReferrerPolicy aReferrerPolicy)
{
// The CSSLoader will retain this object after we return.
nsCOMPtr<nsICSSLoaderObserver> obs = new StubCSSLoaderObserver();
// Charset names are always ASCII.
CSSLoader()->LoadSheet(uri, NodePrincipal(),
NS_LossyConvertUTF16toASCII(charset),
obs,
Element::StringToCORSMode(aCrossOriginAttr),
aReferrerPolicy);
}
nsresult
nsDocument::LoadChromeSheetSync(nsIURI* uri, bool isAgentSheet,
CSSStyleSheet** sheet)
{
return CSSLoader()->LoadSheetSync(uri, isAgentSheet, isAgentSheet, sheet);
}
class nsDelayedEventDispatcher : public nsRunnable
{
public:
explicit nsDelayedEventDispatcher(nsTArray<nsCOMPtr<nsIDocument>>& aDocuments)
{
mDocuments.SwapElements(aDocuments);
}
virtual ~nsDelayedEventDispatcher() {}
NS_IMETHOD Run()
{
FireOrClearDelayedEvents(mDocuments, true);
return NS_OK;
}
private:
nsTArray<nsCOMPtr<nsIDocument> > mDocuments;
};
namespace {
struct UnsuppressArgs
{
explicit UnsuppressArgs(nsIDocument::SuppressionType aWhat)
: mWhat(aWhat)
{
}
nsIDocument::SuppressionType mWhat;
nsTArray<nsCOMPtr<nsIDocument>> mDocs;
};
}
static bool
GetAndUnsuppressSubDocuments(nsIDocument* aDocument,
void* aData)
{
UnsuppressArgs* args = static_cast<UnsuppressArgs*>(aData);
if (args->mWhat != nsIDocument::eAnimationsOnly &&
aDocument->EventHandlingSuppressed() > 0) {
static_cast<nsDocument*>(aDocument)->DecreaseEventSuppression();
} else if (args->mWhat == nsIDocument::eAnimationsOnly &&
aDocument->AnimationsPaused()) {
static_cast<nsDocument*>(aDocument)->ResumeAnimations();
}
if (args->mWhat != nsIDocument::eAnimationsOnly) {
// No need to remember documents if we only care about animation frames.
args->mDocs.AppendElement(aDocument);
}
aDocument->EnumerateSubDocuments(GetAndUnsuppressSubDocuments, aData);
return true;
}
void
nsDocument::UnsuppressEventHandlingAndFireEvents(nsIDocument::SuppressionType aWhat,
bool aFireEvents)
{
UnsuppressArgs args(aWhat);
GetAndUnsuppressSubDocuments(this, &args);
if (aWhat == nsIDocument::eAnimationsOnly) {
// No need to fire events if we only care about animations here.
return;
}
if (aFireEvents) {
NS_DispatchToCurrentThread(new nsDelayedEventDispatcher(args.mDocs));
} else {
FireOrClearDelayedEvents(args.mDocs, false);
}
}
nsISupports*
nsDocument::GetCurrentContentSink()
{
return mParser ? mParser->GetContentSink() : nullptr;
}
nsIDocument*
nsDocument::GetTemplateContentsOwner()
{
if (!mTemplateContentsOwner) {
bool hasHadScriptObject = true;
nsIScriptGlobalObject* scriptObject =
GetScriptHandlingObject(hasHadScriptObject);
nsCOMPtr<nsIDOMDocument> domDocument;
nsresult rv = NS_NewDOMDocument(getter_AddRefs(domDocument),
EmptyString(), // aNamespaceURI
EmptyString(), // aQualifiedName
nullptr, // aDoctype
nsIDocument::GetDocumentURI(),
nsIDocument::GetDocBaseURI(),
NodePrincipal(),
true, // aLoadedAsData
scriptObject, // aEventObject
DocumentFlavorHTML);
NS_ENSURE_SUCCESS(rv, nullptr);
mTemplateContentsOwner = do_QueryInterface(domDocument);
NS_ENSURE_TRUE(mTemplateContentsOwner, nullptr);
nsDocument* doc = static_cast<nsDocument*>(mTemplateContentsOwner.get());
if (!scriptObject) {
mTemplateContentsOwner->SetScopeObject(GetScopeObject());
}
doc->mHasHadScriptHandlingObject = hasHadScriptObject;
// Set |doc| as the template contents owner of itself so that
// |doc| is the template contents owner of template elements created
// by |doc|.
doc->mTemplateContentsOwner = doc;
}
return mTemplateContentsOwner;
}
void
nsDocument::RegisterHostObjectUri(const nsACString& aUri)
{
mHostObjectURIs.AppendElement(aUri);
}
void
nsDocument::UnregisterHostObjectUri(const nsACString& aUri)
{
mHostObjectURIs.RemoveElement(aUri);
}
void
nsDocument::SetScrollToRef(nsIURI *aDocumentURI)
{
if (!aDocumentURI) {
return;
}
nsAutoCString ref;
// Since all URI's that pass through here aren't URL's we can't
// rely on the nsIURI implementation for providing a way for
// finding the 'ref' part of the URI, we'll haveto revert to
// string routines for finding the data past '#'
aDocumentURI->GetSpec(ref);
nsReadingIterator<char> start, end;
ref.BeginReading(start);
ref.EndReading(end);
if (FindCharInReadable('#', start, end)) {
++start; // Skip over the '#'
mScrollToRef = Substring(start, end);
}
}
void
nsDocument::ScrollToRef()
{
if (mScrolledToRefAlready) {
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
shell->ScrollToAnchor();
}
return;
}
if (mScrollToRef.IsEmpty()) {
return;
}
char* tmpstr = ToNewCString(mScrollToRef);
if (!tmpstr) {
return;
}
nsUnescape(tmpstr);
nsAutoCString unescapedRef;
unescapedRef.Assign(tmpstr);
nsMemory::Free(tmpstr);
nsresult rv = NS_ERROR_FAILURE;
// We assume that the bytes are in UTF-8, as it says in the spec:
// http://www.w3.org/TR/html4/appendix/notes.html#h-B.2.1
NS_ConvertUTF8toUTF16 ref(unescapedRef);
nsCOMPtr<nsIPresShell> shell = GetShell();
if (shell) {
// Check an empty string which might be caused by the UTF-8 conversion
if (!ref.IsEmpty()) {
// Note that GoToAnchor will handle flushing layout as needed.
rv = shell->GoToAnchor(ref, mChangeScrollPosWhenScrollingToRef);
} else {
rv = NS_ERROR_FAILURE;
}
// If UTF-8 URI failed then try to assume the string as a
// document's charset.
if (NS_FAILED(rv)) {
const nsACString &docCharset = GetDocumentCharacterSet();
rv = nsContentUtils::ConvertStringFromEncoding(docCharset,
unescapedRef,
ref);
if (NS_SUCCEEDED(rv) && !ref.IsEmpty()) {
rv = shell->GoToAnchor(ref, mChangeScrollPosWhenScrollingToRef);
}
}
if (NS_SUCCEEDED(rv)) {
mScrolledToRefAlready = true;
}
}
}
void
nsDocument::ResetScrolledToRefAlready()
{
mScrolledToRefAlready = false;
}
void
nsDocument::SetChangeScrollPosWhenScrollingToRef(bool aValue)
{
mChangeScrollPosWhenScrollingToRef = aValue;
}
void
nsIDocument::RegisterActivityObserver(nsISupports* aSupports)
{
if (!mActivityObservers) {
mActivityObservers = new nsTHashtable<nsPtrHashKey<nsISupports> >();
if (!mActivityObservers)
return;
}
mActivityObservers->PutEntry(aSupports);
}
bool
nsIDocument::UnregisterActivityObserver(nsISupports* aSupports)
{
if (!mActivityObservers)
return false;
if (!mActivityObservers->GetEntry(aSupports))
return false;
mActivityObservers->RemoveEntry(aSupports);
return true;
}
struct EnumerateActivityObserversData {
nsIDocument::ActivityObserverEnumerator mEnumerator;
void* mData;
};
static PLDHashOperator
EnumerateObservers(nsPtrHashKey<nsISupports>* aEntry, void* aData)
{
EnumerateActivityObserversData* data = static_cast<EnumerateActivityObserversData*>(aData);
data->mEnumerator(aEntry->GetKey(), data->mData);
return PL_DHASH_NEXT;
}
void
nsIDocument::EnumerateActivityObservers(ActivityObserverEnumerator aEnumerator,
void* aData)
{
if (!mActivityObservers)
return;
EnumerateActivityObserversData data = { aEnumerator, aData };
mActivityObservers->EnumerateEntries(EnumerateObservers, &data);
}
void
nsIDocument::RegisterPendingLinkUpdate(Link* aLink)
{
MOZ_ASSERT(!mIsLinkUpdateRegistrationsForbidden);
mLinksToUpdate.PutEntry(aLink);
mHasLinksToUpdate = true;
}
void
nsIDocument::UnregisterPendingLinkUpdate(Link* aLink)
{
MOZ_ASSERT(!mIsLinkUpdateRegistrationsForbidden);
if (!mHasLinksToUpdate)
return;
mLinksToUpdate.RemoveEntry(aLink);
}
static PLDHashOperator
EnumeratePendingLinkUpdates(nsPtrHashKey<Link>* aEntry, void* aData)
{
aEntry->GetKey()->GetElement()->UpdateLinkState(aEntry->GetKey()->LinkState());
return PL_DHASH_NEXT;
}
void
nsIDocument::FlushPendingLinkUpdates()
{
MOZ_ASSERT(!mIsLinkUpdateRegistrationsForbidden);
if (!mHasLinksToUpdate)
return;
#ifdef DEBUG
AutoRestore<bool> saved(mIsLinkUpdateRegistrationsForbidden);
mIsLinkUpdateRegistrationsForbidden = true;
#endif
mLinksToUpdate.EnumerateEntries(EnumeratePendingLinkUpdates, nullptr);
mLinksToUpdate.Clear();
mHasLinksToUpdate = false;
}
already_AddRefed<nsIDocument>
nsIDocument::CreateStaticClone(nsIDocShell* aCloneContainer)
{
nsDocument* thisAsDoc = static_cast<nsDocument*>(this);
mCreatingStaticClone = true;
// Make document use different container during cloning.
nsRefPtr<nsDocShell> originalShell = mDocumentContainer.get();
SetContainer(static_cast<nsDocShell*>(aCloneContainer));
nsCOMPtr<nsIDOMNode> clonedNode;
nsresult rv = thisAsDoc->CloneNode(true, 1, getter_AddRefs(clonedNode));
SetContainer(originalShell);
nsRefPtr<nsDocument> clonedDoc;
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIDocument> tmp = do_QueryInterface(clonedNode);
if (tmp) {
clonedDoc = static_cast<nsDocument*>(tmp.get());
if (IsStaticDocument()) {
clonedDoc->mOriginalDocument = mOriginalDocument;
} else {
clonedDoc->mOriginalDocument = this;
}
int32_t sheetsCount = GetNumberOfStyleSheets();
for (int32_t i = 0; i < sheetsCount; ++i) {
nsRefPtr<CSSStyleSheet> sheet = do_QueryObject(GetStyleSheetAt(i));
if (sheet) {
if (sheet->IsApplicable()) {
nsRefPtr<CSSStyleSheet> clonedSheet =
sheet->Clone(nullptr, nullptr, clonedDoc, nullptr);
NS_WARN_IF_FALSE(clonedSheet, "Cloning a stylesheet didn't work!");
if (clonedSheet) {
clonedDoc->AddStyleSheet(clonedSheet);
}
}
}
}
sheetsCount = thisAsDoc->mOnDemandBuiltInUASheets.Count();
// Iterate backwards to maintain order
for (int32_t i = sheetsCount - 1; i >= 0; --i) {
nsRefPtr<CSSStyleSheet> sheet =
do_QueryObject(thisAsDoc->mOnDemandBuiltInUASheets[i]);
if (sheet) {
if (sheet->IsApplicable()) {
nsRefPtr<CSSStyleSheet> clonedSheet =
sheet->Clone(nullptr, nullptr, clonedDoc, nullptr);
NS_WARN_IF_FALSE(clonedSheet, "Cloning a stylesheet didn't work!");
if (clonedSheet) {
clonedDoc->AddOnDemandBuiltInUASheet(clonedSheet);
}
}
}
}
}
}
mCreatingStaticClone = false;
return clonedDoc.forget();
}
nsresult
nsIDocument::ScheduleFrameRequestCallback(const FrameRequestCallbackHolder& aCallback,
int32_t *aHandle)
{
if (mFrameRequestCallbackCounter == INT32_MAX) {
// Can't increment without overflowing; bail out
return NS_ERROR_NOT_AVAILABLE;
}
int32_t newHandle = ++mFrameRequestCallbackCounter;
bool alreadyRegistered = !mFrameRequestCallbacks.IsEmpty();
DebugOnly<FrameRequest*> request =
mFrameRequestCallbacks.AppendElement(FrameRequest(aCallback, newHandle));
NS_ASSERTION(request, "This is supposed to be infallible!");
if (!alreadyRegistered && mPresShell && IsEventHandlingEnabled()) {
mPresShell->GetPresContext()->RefreshDriver()->
ScheduleFrameRequestCallbacks(this);
}
*aHandle = newHandle;
return NS_OK;
}
void
nsIDocument::CancelFrameRequestCallback(int32_t aHandle)
{
// mFrameRequestCallbacks is stored sorted by handle
if (mFrameRequestCallbacks.RemoveElementSorted(aHandle) &&
mFrameRequestCallbacks.IsEmpty() &&
mPresShell && IsEventHandlingEnabled()) {
mPresShell->GetPresContext()->RefreshDriver()->
RevokeFrameRequestCallbacks(this);
}
}
nsresult
nsDocument::GetStateObject(nsIVariant** aState)
{
// Get the document's current state object. This is the object backing both
// history.state and popStateEvent.state.
//
// mStateObjectContainer may be null; this just means that there's no
// current state object.
nsCOMPtr<nsIVariant> stateObj;
if (!mStateObjectCached && mStateObjectContainer) {
AutoJSContext cx;
nsIGlobalObject* sgo = GetScopeObject();
NS_ENSURE_TRUE(sgo, NS_ERROR_UNEXPECTED);
JS::Rooted<JSObject*> global(cx, sgo->GetGlobalJSObject());
NS_ENSURE_TRUE(global, NS_ERROR_UNEXPECTED);
JSAutoCompartment ac(cx, global);
mStateObjectContainer->
DeserializeToVariant(cx, getter_AddRefs(mStateObjectCached));
}
NS_IF_ADDREF(*aState = mStateObjectCached);
return NS_OK;
}
nsDOMNavigationTiming*
nsDocument::GetNavigationTiming() const
{
return mTiming;
}
nsresult
nsDocument::SetNavigationTiming(nsDOMNavigationTiming* aTiming)
{
mTiming = aTiming;
if (!mLoadingTimeStamp.IsNull() && mTiming) {
mTiming->SetDOMLoadingTimeStamp(nsIDocument::GetDocumentURI(), mLoadingTimeStamp);
}
return NS_OK;
}
Element*
nsDocument::FindImageMap(const nsAString& aUseMapValue)
{
if (aUseMapValue.IsEmpty()) {
return nullptr;
}
nsAString::const_iterator start, end;
aUseMapValue.BeginReading(start);
aUseMapValue.EndReading(end);
int32_t hash = aUseMapValue.FindChar('#');
if (hash < 0) {
return nullptr;
}
// aUsemap contains a '#', set start to point right after the '#'
start.advance(hash + 1);
if (start == end) {
return nullptr; // aUsemap == "#"
}
const nsAString& mapName = Substring(start, end);
if (!mImageMaps) {
mImageMaps = new nsContentList(this, kNameSpaceID_XHTML, nsGkAtoms::map, nsGkAtoms::map);
}
uint32_t i, n = mImageMaps->Length(true);
nsString name;
for (i = 0; i < n; ++i) {
nsIContent* map = mImageMaps->Item(i);
if (map->AttrValueIs(kNameSpaceID_None, nsGkAtoms::id, mapName,
eCaseMatters) ||
(map->GetAttr(kNameSpaceID_None, nsGkAtoms::name, name) &&
mapName.Equals(name, nsCaseInsensitiveStringComparator()))) {
return map->AsElement();
}
}
return nullptr;
}
#define DEPRECATED_OPERATION(_op) #_op "Warning",
static const char* kDeprecationWarnings[] = {
#include "nsDeprecatedOperationList.h"
nullptr
};
#undef DEPRECATED_OPERATION
#define DOCUMENT_WARNING(_op) #_op "Warning",
static const char* kDocumentWarnings[] = {
#include "nsDocumentWarningList.h"
nullptr
};
#undef DOCUMENT_WARNING
bool
nsIDocument::HasWarnedAbout(DeprecatedOperations aOperation)
{
static_assert(eDeprecatedOperationCount <= 64,
"Too many deprecated operations");
return mDeprecationWarnedAbout & (1ull << aOperation);
}
void
nsIDocument::WarnOnceAbout(DeprecatedOperations aOperation,
bool asError /* = false */)
{
if (HasWarnedAbout(aOperation)) {
return;
}
mDeprecationWarnedAbout |= (1ull << aOperation);
uint32_t flags = asError ? nsIScriptError::errorFlag
: nsIScriptError::warningFlag;
nsContentUtils::ReportToConsole(flags,
NS_LITERAL_CSTRING("DOM Core"), this,
nsContentUtils::eDOM_PROPERTIES,
kDeprecationWarnings[aOperation]);
}
bool
nsIDocument::HasWarnedAbout(DocumentWarnings aWarning)
{
static_assert(eDocumentWarningCount <= 64,
"Too many document warnings");
return mDocWarningWarnedAbout & (1ull << aWarning);
}
void
nsIDocument::WarnOnceAbout(DocumentWarnings aWarning,
bool asError /* = false */,
const char16_t **aParams /* = nullptr */,
uint32_t aParamsLength /* = 0 */)
{
if (HasWarnedAbout(aWarning)) {
return;
}
mDocWarningWarnedAbout |= (1ull << aWarning);
uint32_t flags = asError ? nsIScriptError::errorFlag
: nsIScriptError::warningFlag;
nsContentUtils::ReportToConsole(flags,
NS_LITERAL_CSTRING("DOM Core"), this,
nsContentUtils::eDOM_PROPERTIES,
kDocumentWarnings[aWarning],
aParams,
aParamsLength);
}
nsresult
nsDocument::AddImage(imgIRequest* aImage)
{
NS_ENSURE_ARG_POINTER(aImage);
// See if the image is already in the hashtable. If it is, get the old count.
uint32_t oldCount = 0;
mImageTracker.Get(aImage, &oldCount);
// Put the image in the hashtable, with the proper count.
mImageTracker.Put(aImage, oldCount + 1);
nsresult rv = NS_OK;
// If this is the first insertion and we're locking images, lock this image
// too.
if (oldCount == 0) {
if (mLockingImages)
rv = aImage->LockImage();
if (NS_SUCCEEDED(rv) && (!sOnloadDecodeLimit ||
mImageTracker.Count() < sOnloadDecodeLimit))
rv = aImage->StartDecoding();
}
// If this is the first insertion and we're animating images, request
// that this image be animated too.
if (oldCount == 0 && mAnimatingImages) {
nsresult rv2 = aImage->IncrementAnimationConsumers();
rv = NS_SUCCEEDED(rv) ? rv2 : rv;
}
return rv;
}
nsresult
nsDocument::RemoveImage(imgIRequest* aImage, uint32_t aFlags)
{
NS_ENSURE_ARG_POINTER(aImage);
// Get the old count. It should exist and be > 0.
uint32_t count = 0;
DebugOnly<bool> found = mImageTracker.Get(aImage, &count);
NS_ABORT_IF_FALSE(found, "Removing image that wasn't in the tracker!");
NS_ABORT_IF_FALSE(count > 0, "Entry in the cache tracker with count 0!");
// We're removing, so decrement the count.
count--;
// If the count is now zero, remove from the tracker.
// Otherwise, set the new value.
if (count != 0) {
mImageTracker.Put(aImage, count);
return NS_OK;
}
mImageTracker.Remove(aImage);
nsresult rv = NS_OK;
// Now that we're no longer tracking this image, unlock it if we'd
// previously locked it.
if (mLockingImages) {
rv = aImage->UnlockImage();
}
// If we're animating images, remove our request to animate this one.
if (mAnimatingImages) {
nsresult rv2 = aImage->DecrementAnimationConsumers();
rv = NS_SUCCEEDED(rv) ? rv2 : rv;
}
if (aFlags & REQUEST_DISCARD) {
// Request that the image be discarded if nobody else holds a lock on it.
// Do this even if !mLockingImages, because even if we didn't just unlock
// this image, it might still be a candidate for discarding.
aImage->RequestDiscard();
}
return rv;
}
nsresult
nsDocument::AddPlugin(nsIObjectLoadingContent* aPlugin)
{
MOZ_ASSERT(aPlugin);
if (!mPlugins.PutEntry(aPlugin)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
void
nsDocument::RemovePlugin(nsIObjectLoadingContent* aPlugin)
{
MOZ_ASSERT(aPlugin);
mPlugins.RemoveEntry(aPlugin);
}
static bool
AllSubDocumentPluginEnum(nsIDocument* aDocument, void* userArg)
{
nsTArray<nsIObjectLoadingContent*>* plugins =
reinterpret_cast< nsTArray<nsIObjectLoadingContent*>* >(userArg);
MOZ_ASSERT(plugins);
aDocument->GetPlugins(*plugins);
return true;
}
static PLDHashOperator
AllPluginEnum(nsPtrHashKey<nsIObjectLoadingContent>* aPlugin, void* userArg)
{
nsTArray<nsIObjectLoadingContent*>* allPlugins =
reinterpret_cast< nsTArray<nsIObjectLoadingContent*>* >(userArg);
MOZ_ASSERT(allPlugins);
allPlugins->AppendElement(aPlugin->GetKey());
return PL_DHASH_NEXT;
}
void
nsDocument::GetPlugins(nsTArray<nsIObjectLoadingContent*>& aPlugins)
{
aPlugins.SetCapacity(aPlugins.Length() + mPlugins.Count());
mPlugins.EnumerateEntries(AllPluginEnum, &aPlugins);
EnumerateSubDocuments(AllSubDocumentPluginEnum, &aPlugins);
}
PLDHashOperator LockEnumerator(imgIRequest* aKey,
uint32_t aData,
void* userArg)
{
aKey->LockImage();
aKey->RequestDecode();
return PL_DHASH_NEXT;
}
PLDHashOperator UnlockEnumerator(imgIRequest* aKey,
uint32_t aData,
void* userArg)
{
aKey->UnlockImage();
return PL_DHASH_NEXT;
}
nsresult
nsDocument::SetImageLockingState(bool aLocked)
{
if (XRE_GetProcessType() == GeckoProcessType_Content &&
!Preferences::GetBool("image.mem.allow_locking_in_content_processes", true)) {
return NS_OK;
}
// If there's no change, there's nothing to do.
if (mLockingImages == aLocked)
return NS_OK;
// Otherwise, iterate over our images and perform the appropriate action.
mImageTracker.EnumerateRead(aLocked ? LockEnumerator
: UnlockEnumerator,
nullptr);
// Update state.
mLockingImages = aLocked;
return NS_OK;
}
PLDHashOperator IncrementAnimationEnumerator(imgIRequest* aKey,
uint32_t aData,
void* userArg)
{
aKey->IncrementAnimationConsumers();
return PL_DHASH_NEXT;
}
PLDHashOperator DecrementAnimationEnumerator(imgIRequest* aKey,
uint32_t aData,
void* userArg)
{
aKey->DecrementAnimationConsumers();
return PL_DHASH_NEXT;
}
void
nsDocument::SetImagesNeedAnimating(bool aAnimating)
{
// If there's no change, there's nothing to do.
if (mAnimatingImages == aAnimating)
return;
// Otherwise, iterate over our images and perform the appropriate action.
mImageTracker.EnumerateRead(aAnimating ? IncrementAnimationEnumerator
: DecrementAnimationEnumerator,
nullptr);
// Update state.
mAnimatingImages = aAnimating;
}
already_AddRefed<Touch>
nsIDocument::CreateTouch(nsIDOMWindow* aView,
EventTarget* aTarget,
int32_t aIdentifier,
int32_t aPageX, int32_t aPageY,
int32_t aScreenX, int32_t aScreenY,
int32_t aClientX, int32_t aClientY,
int32_t aRadiusX, int32_t aRadiusY,
float aRotationAngle,
float aForce)
{
nsRefPtr<Touch> touch = new Touch(aTarget,
aIdentifier,
aPageX, aPageY,
aScreenX, aScreenY,
aClientX, aClientY,
aRadiusX, aRadiusY,
aRotationAngle,
aForce);
return touch.forget();
}
already_AddRefed<TouchList>
nsIDocument::CreateTouchList()
{
nsRefPtr<TouchList> retval = new TouchList(ToSupports(this));
return retval.forget();
}
already_AddRefed<TouchList>
nsIDocument::CreateTouchList(Touch& aTouch,
const Sequence<OwningNonNull<Touch> >& aTouches)
{
nsRefPtr<TouchList> retval = new TouchList(ToSupports(this));
retval->Append(&aTouch);
for (uint32_t i = 0; i < aTouches.Length(); ++i) {
retval->Append(aTouches[i].get());
}
return retval.forget();
}
already_AddRefed<TouchList>
nsIDocument::CreateTouchList(const Sequence<OwningNonNull<Touch> >& aTouches)
{
nsRefPtr<TouchList> retval = new TouchList(ToSupports(this));
for (uint32_t i = 0; i < aTouches.Length(); ++i) {
retval->Append(aTouches[i].get());
}
return retval.forget();
}
already_AddRefed<nsDOMCaretPosition>
nsIDocument::CaretPositionFromPoint(float aX, float aY)
{
nscoord x = nsPresContext::CSSPixelsToAppUnits(aX);
nscoord y = nsPresContext::CSSPixelsToAppUnits(aY);
nsPoint pt(x, y);
FlushPendingNotifications(Flush_Layout);
nsIPresShell *ps = GetShell();
if (!ps) {
return nullptr;
}
nsIFrame *rootFrame = ps->GetRootFrame();
// XUL docs, unlike HTML, have no frame tree until everything's done loading
if (!rootFrame) {
return nullptr;
}
nsIFrame *ptFrame = nsLayoutUtils::GetFrameForPoint(rootFrame, pt,
nsLayoutUtils::IGNORE_PAINT_SUPPRESSION | nsLayoutUtils::IGNORE_CROSS_DOC);
if (!ptFrame) {
return nullptr;
}
// GetContentOffsetsFromPoint requires frame-relative coordinates, so we need
// to adjust to frame-relative coordinates before we can perform this call.
// It should also not take into account the padding of the frame.
nsPoint adjustedPoint = pt - ptFrame->GetOffsetTo(rootFrame);
nsFrame::ContentOffsets offsets =
ptFrame->GetContentOffsetsFromPoint(adjustedPoint);
nsCOMPtr<nsIContent> node = offsets.content;
uint32_t offset = offsets.offset;
nsCOMPtr<nsIContent> anonNode = node;
bool nodeIsAnonymous = node && node->IsInNativeAnonymousSubtree();
if (nodeIsAnonymous) {
node = ptFrame->GetContent();
nsIContent* nonanon = node->FindFirstNonChromeOnlyAccessContent();
nsCOMPtr<nsIDOMHTMLInputElement> input = do_QueryInterface(nonanon);
nsCOMPtr<nsIDOMHTMLTextAreaElement> textArea = do_QueryInterface(nonanon);
bool isText;
if (textArea || (input &&
NS_SUCCEEDED(input->MozIsTextField(false, &isText)) &&
isText)) {
// If the anonymous content node has a child, then we need to make sure
// that we get the appropriate child, as otherwise the offset may not be
// correct when we construct a range for it.
nsCOMPtr<nsIContent> firstChild = anonNode->GetFirstChild();
if (firstChild) {
anonNode = firstChild;
}
if (textArea) {
offset = nsContentUtils::GetAdjustedOffsetInTextControl(ptFrame, offset);
}
node = nonanon;
} else {
node = nullptr;
offset = 0;
}
}
nsRefPtr<nsDOMCaretPosition> aCaretPos = new nsDOMCaretPosition(node, offset);
if (nodeIsAnonymous) {
aCaretPos->SetAnonymousContentNode(anonNode);
}
return aCaretPos.forget();
}
NS_IMETHODIMP
nsDocument::CaretPositionFromPoint(float aX, float aY, nsISupports** aCaretPos)
{
NS_ENSURE_ARG_POINTER(aCaretPos);
*aCaretPos = nsIDocument::CaretPositionFromPoint(aX, aY).take();
return NS_OK;
}
void
nsIDocument::ObsoleteSheet(nsIURI *aSheetURI, ErrorResult& rv)
{
nsresult res = CSSLoader()->ObsoleteSheet(aSheetURI);
if (NS_FAILED(res)) {
rv.Throw(res);
}
}
void
nsIDocument::ObsoleteSheet(const nsAString& aSheetURI, ErrorResult& rv)
{
nsCOMPtr<nsIURI> uri;
nsresult res = NS_NewURI(getter_AddRefs(uri), aSheetURI);
if (NS_FAILED(res)) {
rv.Throw(res);
return;
}
res = CSSLoader()->ObsoleteSheet(uri);
if (NS_FAILED(res)) {
rv.Throw(res);
}
}
nsIHTMLCollection*
nsIDocument::Children()
{
if (!mChildrenCollection) {
mChildrenCollection = new nsContentList(this, kNameSpaceID_Wildcard,
nsGkAtoms::_asterix,
nsGkAtoms::_asterix,
false);
}
return mChildrenCollection;
}
uint32_t
nsIDocument::ChildElementCount()
{
return Children()->Length();
}
namespace mozilla {
// Singleton class to manage the list of fullscreen documents which are the
// root of a branch which contains fullscreen documents. We maintain this list
// so that we can easily exit all windows from fullscreen when the user
// presses the escape key.
class FullscreenRoots {
public:
// Adds a root to the manager. Adding a root multiple times does not result
// in duplicate entries for that item, only one.
static void Add(nsIDocument* aRoot);
// Iterates over every root in the root list, and calls aFunction, passing
// each root once to aFunction. It is safe to call Add() and Remove() while
// iterating over the list (i.e. in aFunction). Documents that are removed
// from the manager during traversal are not traversed, and documents that
// are added to the manager during traversal are also not traversed.
static void ForEach(void(*aFunction)(nsIDocument* aDoc));
// Removes a specific root from the manager.
static void Remove(nsIDocument* aRoot);
// Returns true if all roots added to the list have been removed.
static bool IsEmpty();
private:
FullscreenRoots() {
MOZ_COUNT_CTOR(FullscreenRoots);
}
~FullscreenRoots() {
MOZ_COUNT_DTOR(FullscreenRoots);
}
enum {
NotFound = uint32_t(-1)
};
// Looks in mRoots for aRoot. Returns the index if found, otherwise NotFound.
static uint32_t Find(nsIDocument* aRoot);
// Returns true if aRoot is in the list of fullscreen roots.
static bool Contains(nsIDocument* aRoot);
// Singleton instance of the FullscreenRoots. This is instantiated when a
// root is added, and it is deleted when the last root is removed.
static FullscreenRoots* sInstance;
// List of weak pointers to roots.
nsTArray<nsWeakPtr> mRoots;
};
FullscreenRoots* FullscreenRoots::sInstance = nullptr;
/* static */
void
FullscreenRoots::ForEach(void(*aFunction)(nsIDocument* aDoc))
{
if (!sInstance) {
return;
}
// Create a copy of the roots array, and iterate over the copy. This is so
// that if an element is removed from mRoots we don't mess up our iteration.
nsTArray<nsWeakPtr> roots(sInstance->mRoots);
// Call aFunction on all entries.
for (uint32_t i = 0; i < roots.Length(); i++) {
nsCOMPtr<nsIDocument> root = do_QueryReferent(roots[i]);
// Check that the root isn't in the manager. This is so that new additions
// while we were running don't get traversed.
if (root && FullscreenRoots::Contains(root)) {
aFunction(root);
}
}
}
/* static */
bool
FullscreenRoots::Contains(nsIDocument* aRoot)
{
return FullscreenRoots::Find(aRoot) != NotFound;
}
/* static */
void
FullscreenRoots::Add(nsIDocument* aRoot)
{
if (!FullscreenRoots::Contains(aRoot)) {
if (!sInstance) {
sInstance = new FullscreenRoots();
}
sInstance->mRoots.AppendElement(do_GetWeakReference(aRoot));
}
}
/* static */
uint32_t
FullscreenRoots::Find(nsIDocument* aRoot)
{
if (!sInstance) {
return NotFound;
}
nsTArray<nsWeakPtr>& roots = sInstance->mRoots;
for (uint32_t i = 0; i < roots.Length(); i++) {
nsCOMPtr<nsIDocument> otherRoot(do_QueryReferent(roots[i]));
if (otherRoot == aRoot) {
return i;
}
}
return NotFound;
}
/* static */
void
FullscreenRoots::Remove(nsIDocument* aRoot)
{
uint32_t index = Find(aRoot);
NS_ASSERTION(index != NotFound,
"Should only try to remove roots which are still added!");
if (index == NotFound || !sInstance) {
return;
}
sInstance->mRoots.RemoveElementAt(index);
if (sInstance->mRoots.IsEmpty()) {
delete sInstance;
sInstance = nullptr;
}
}
/* static */
bool
FullscreenRoots::IsEmpty()
{
return !sInstance;
}
} // end namespace mozilla.
using mozilla::FullscreenRoots;
nsIDocument*
nsDocument::GetFullscreenRoot()
{
nsCOMPtr<nsIDocument> root = do_QueryReferent(mFullscreenRoot);
return root;
}
void
nsDocument::SetFullscreenRoot(nsIDocument* aRoot)
{
mFullscreenRoot = do_GetWeakReference(aRoot);
}
NS_IMETHODIMP
nsDocument::MozCancelFullScreen()
{
nsIDocument::MozCancelFullScreen();
return NS_OK;
}
void
nsIDocument::MozCancelFullScreen()
{
RestorePreviousFullScreenState();
}
// Runnable to set window full-screen mode. Used as a script runner
// to ensure we only call nsGlobalWindow::SetFullScreen() when it's safe to
// run script. nsGlobalWindow::SetFullScreen() dispatches a synchronous event
// (handled in chome code) which is unsafe to run if this is called in
// Element::UnbindFromTree().
class nsSetWindowFullScreen : public nsRunnable {
public:
nsSetWindowFullScreen(nsIDocument* aDoc, bool aValue, gfx::VRHMDInfo* aHMD = nullptr)
: mDoc(aDoc), mValue(aValue), mHMD(aHMD) {}
NS_IMETHOD Run()
{
if (mDoc->GetWindow()) {
mDoc->GetWindow()->SetFullScreenInternal(mValue, false, mHMD);
}
return NS_OK;
}
private:
nsCOMPtr<nsIDocument> mDoc;
bool mValue;
nsRefPtr<gfx::VRHMDInfo> mHMD;
};
static nsIDocument*
GetFullscreenRootDocument(nsIDocument* aDoc)
{
if (!aDoc) {
return nullptr;
}
nsIDocument* doc = aDoc;
nsIDocument* parent;
while ((parent = doc->GetParentDocument()) &&
(!nsContentUtils::IsFullscreenApiContentOnly() ||
!nsContentUtils::IsChromeDoc(parent))) {
doc = parent;
}
return doc;
}
static void
SetWindowFullScreen(nsIDocument* aDoc, bool aValue, gfx::VRHMDInfo *aVRHMD = nullptr)
{
// Maintain list of fullscreen root documents.
nsCOMPtr<nsIDocument> root = GetFullscreenRootDocument(aDoc);
if (aValue) {
FullscreenRoots::Add(root);
} else {
FullscreenRoots::Remove(root);
}
if (!nsContentUtils::IsFullscreenApiContentOnly()) {
nsContentUtils::AddScriptRunner(new nsSetWindowFullScreen(aDoc, aValue, aVRHMD));
}
}
class nsCallExitFullscreen : public nsRunnable {
public:
explicit nsCallExitFullscreen(nsIDocument* aDoc)
: mDoc(aDoc) {}
NS_IMETHOD Run()
{
nsDocument::ExitFullscreen(mDoc);
return NS_OK;
}
private:
nsCOMPtr<nsIDocument> mDoc;
};
/* static */
void
nsIDocument::ExitFullscreen(nsIDocument* aDoc, bool aRunAsync)
{
if (aDoc && !aDoc->IsFullScreenDoc()) {
return;
}
if (aRunAsync) {
NS_DispatchToCurrentThread(new nsCallExitFullscreen(aDoc));
return;
}
nsDocument::ExitFullscreen(aDoc);
}
// Returns true if the document is a direct child of a cross process parent
// mozbrowser iframe or TabParent. This is the case when the document has
// a null parent and its DocShell reports that it is a browser frame, or
// we can get a TabChild from it.
static bool
HasCrossProcessParent(nsIDocument* aDocument)
{
if (XRE_GetProcessType() != GeckoProcessType_Content) {
return false;
}
if (aDocument->GetParentDocument() != nullptr) {
return false;
}
nsPIDOMWindow* win = aDocument->GetWindow();
if (!win) {
return false;
}
nsCOMPtr<nsIDocShell> docShell = win->GetDocShell();
if (!docShell) {
return false;
}
TabChild* tabChild(TabChild::GetFrom(docShell));
if (!tabChild) {
return false;
}
return true;
}
static bool
CountFullscreenSubDocuments(nsIDocument* aDoc, void* aData)
{
if (aDoc->IsFullScreenDoc()) {
uint32_t* count = static_cast<uint32_t*>(aData);
(*count)++;
}
return true;
}
static uint32_t
CountFullscreenSubDocuments(nsIDocument* aDoc)
{
uint32_t count = 0;
aDoc->EnumerateSubDocuments(CountFullscreenSubDocuments, &count);
return count;
}
bool
nsDocument::IsFullscreenLeaf()
{
// A fullscreen leaf document is fullscreen, and has no fullscreen
// subdocuments.
if (!IsFullScreenDoc()) {
return false;
}
return CountFullscreenSubDocuments(this) == 0;
}
static bool
ResetFullScreen(nsIDocument* aDocument, void* aData)
{
if (aDocument->IsFullScreenDoc()) {
NS_ASSERTION(CountFullscreenSubDocuments(aDocument) <= 1,
"Should have at most 1 fullscreen subdocument.");
static_cast<nsDocument*>(aDocument)->CleanupFullscreenState();
NS_ASSERTION(!aDocument->IsFullScreenDoc(), "Should reset full-screen");
nsTArray<nsIDocument*>* changed = reinterpret_cast<nsTArray<nsIDocument*>*>(aData);
changed->AppendElement(aDocument);
if (HasCrossProcessParent(aDocument)) {
// We're at the top of the content-process side doc tree. Ask the parent
// process to exit fullscreen.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
os->NotifyObservers(aDocument, "ask-parent-to-exit-fullscreen", nullptr);
}
// Dispatch a notification so that if this document has any
// cross-process subdocuments, they'll be notified to exit fullscreen.
// The BrowserElementParent listens for this event and performs the
// cross process notification if it has a remote child process.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
os->NotifyObservers(aDocument, "ask-children-to-exit-fullscreen", nullptr);
aDocument->EnumerateSubDocuments(ResetFullScreen, aData);
}
return true;
}
static void
ExitFullscreenInDocTree(nsIDocument* aMaybeNotARootDoc)
{
MOZ_ASSERT(aMaybeNotARootDoc);
nsCOMPtr<nsIDocument> root = aMaybeNotARootDoc->GetFullscreenRoot();
NS_ASSERTION(root, "Should have root when in fullscreen!");
if (!root) {
return;
}
NS_ASSERTION(root->IsFullScreenDoc(),
"Fullscreen root should be a fullscreen doc...");
// Stores a list of documents to which we must dispatch "mozfullscreenchange".
// We're required by the spec to dispatch the events in leaf-to-root
// order when exiting fullscreen, but we traverse the doctree in a
// root-to-leaf order, so we save references to the documents we must
// dispatch to so that we dispatch in the specified order.
nsAutoTArray<nsIDocument*, 8> changed;
// Walk the tree of fullscreen documents, and reset their fullscreen state.
ResetFullScreen(root, static_cast<void*>(&changed));
// Dispatch "mozfullscreenchange" events. Note this loop is in reverse
// order so that the events for the leaf document arrives before the root
// document, as required by the spec.
for (uint32_t i = 0; i < changed.Length(); ++i) {
DispatchFullScreenChange(changed[changed.Length() - i - 1]);
}
NS_ASSERTION(!root->IsFullScreenDoc(),
"Fullscreen root should no longer be a fullscreen doc...");
// Move the top-level window out of fullscreen mode.
SetWindowFullScreen(root, false);
}
/* static */
void
nsDocument::ExitFullscreen(nsIDocument* aDoc)
{
// Unlock the pointer, if it's locked.
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (pointerLockedElement) {
UnlockPointer();
}
if (aDoc) {
ExitFullscreenInDocTree(aDoc);
return;
}
// Clear fullscreen stacks in all fullscreen roots' descendant documents.
FullscreenRoots::ForEach(&ExitFullscreenInDocTree);
NS_ASSERTION(FullscreenRoots::IsEmpty(),
"Should have exited all fullscreen roots from fullscreen");
}
bool
GetFullscreenLeaf(nsIDocument* aDoc, void* aData)
{
if (aDoc->IsFullscreenLeaf()) {
nsIDocument** result = static_cast<nsIDocument**>(aData);
*result = aDoc;
return false;
} else if (aDoc->IsFullScreenDoc()) {
aDoc->EnumerateSubDocuments(GetFullscreenLeaf, aData);
}
return true;
}
static nsIDocument*
GetFullscreenLeaf(nsIDocument* aDoc)
{
nsIDocument* leaf = nullptr;
GetFullscreenLeaf(aDoc, &leaf);
if (leaf) {
return leaf;
}
// Otherwise we could be either in a non-fullscreen doc tree, or we're
// below the fullscreen doc. Start the search from the root.
nsIDocument* root = GetFullscreenRootDocument(aDoc);
// Check that the root is actually fullscreen so we don't waste time walking
// around its descendants.
if (!root->IsFullScreenDoc()) {
return nullptr;
}
GetFullscreenLeaf(root, &leaf);
return leaf;
}
void
nsDocument::RestorePreviousFullScreenState()
{
NS_ASSERTION(!IsFullScreenDoc() || !FullscreenRoots::IsEmpty(),
"Should have at least 1 fullscreen root when fullscreen!");
NS_ASSERTION(!nsContentUtils::IsFullscreenApiContentOnly() ||
!nsContentUtils::IsChromeDoc(this),
"Should not run RestorePreviousFullScreenState() on "
"chrome document when fullscreen is content only");
if (!IsFullScreenDoc() || !GetWindow() || FullscreenRoots::IsEmpty()) {
return;
}
// If fullscreen mode is updated the pointer should be unlocked
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (pointerLockedElement) {
UnlockPointer();
}
nsCOMPtr<nsIDocument> fullScreenDoc = GetFullscreenLeaf(this);
// The fullscreen document may contain a <iframe mozbrowser> element which
// has a cross process child. So send a notification so that its browser
// parent will send a message to its child process to also exit fullscreen.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
os->NotifyObservers(fullScreenDoc, "ask-children-to-exit-fullscreen", nullptr);
// Clear full-screen stacks in all descendant in process documents, bottom up.
nsIDocument* doc = fullScreenDoc;
while (doc != this) {
NS_ASSERTION(doc->IsFullScreenDoc(), "Should be full-screen doc");
static_cast<nsDocument*>(doc)->CleanupFullscreenState();
UnlockPointer();
DispatchFullScreenChange(doc);
doc = doc->GetParentDocument();
}
// Roll-back full-screen state to previous full-screen element.
NS_ASSERTION(doc == this, "Must have reached this doc.");
while (doc != nullptr) {
static_cast<nsDocument*>(doc)->FullScreenStackPop();
UnlockPointer();
DispatchFullScreenChange(doc);
if (static_cast<nsDocument*>(doc)->mFullScreenStack.IsEmpty()) {
if (HasCrossProcessParent(doc)) {
// Send notification to the parent process to tell it to rollback to
// the previous fullscreen elements in its fullscreen element stacks.
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
os->NotifyObservers(doc, "ask-parent-to-rollback-fullscreen", nullptr);
}
// Full-screen stack in document is empty. Go back up to the parent
// document. We'll pop the containing element off its stack, and use
// its next full-screen element as the full-screen element.
static_cast<nsDocument*>(doc)->CleanupFullscreenState();
doc = doc->GetParentDocument();
} else {
// Else we popped the top of the stack, and there's still another
// element in there, so that will become the full-screen element.
if (fullScreenDoc != doc) {
// We've popped so enough off the stack that we've rolled back to
// a fullscreen element in a parent document. If this document isn't
// approved for fullscreen, or if it's cross origin, dispatch an
// event to chrome so it knows to show the authorization/warning UI.
if (!nsContentUtils::HaveEqualPrincipals(fullScreenDoc, doc) ||
(!nsContentUtils::IsSitePermAllow(doc->NodePrincipal(), "fullscreen") &&
!static_cast<nsDocument*>(doc)->mIsApprovedForFullscreen)) {
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(doc,
NS_LITERAL_STRING("MozEnteredDomFullscreen"),
true,
true);
asyncDispatcher->PostDOMEvent();
}
}
if (!nsContentUtils::HaveEqualPrincipals(doc, fullScreenDoc)) {
// The origin which is fullscreen changed. Send a notification to
// the root process so that a warning or approval UI can be shown
// as necessary.
nsAutoString origin;
nsContentUtils::GetUTFOrigin(doc->NodePrincipal(), origin);
nsIDocument* root = GetFullscreenRootDocument(doc);
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
os->NotifyObservers(root, "fullscreen-origin-change", origin.get());
}
break;
}
}
if (doc == nullptr) {
// We moved all documents in this doctree out of fullscreen mode,
// move the top-level window out of fullscreen mode.
NS_ASSERTION(!GetFullscreenRootDocument(this)->IsFullScreenDoc(),
"Should have cleared all docs' stacks");
SetWindowFullScreen(this, false);
}
}
bool
nsDocument::IsFullScreenDoc()
{
return GetFullScreenElement() != nullptr;
}
class nsCallRequestFullScreen : public nsRunnable
{
public:
explicit nsCallRequestFullScreen(Element* aElement, FullScreenOptions& aOptions)
: mElement(aElement),
mDoc(aElement->OwnerDoc()),
mWasCallerChrome(nsContentUtils::IsCallerChrome()),
mHadRequestPending(static_cast<nsDocument*>(mDoc.get())->
mAsyncFullscreenPending),
mOptions(aOptions)
{
static_cast<nsDocument*>(mDoc.get())->
mAsyncFullscreenPending = true;
}
NS_IMETHOD Run()
{
static_cast<nsDocument*>(mDoc.get())->
mAsyncFullscreenPending = mHadRequestPending;
nsDocument* doc = static_cast<nsDocument*>(mDoc.get());
doc->RequestFullScreen(mElement,
mOptions,
mWasCallerChrome,
/* aNotifyOnOriginChange */ true);
return NS_OK;
}
nsRefPtr<Element> mElement;
nsCOMPtr<nsIDocument> mDoc;
bool mWasCallerChrome;
bool mHadRequestPending;
FullScreenOptions mOptions;
};
void
nsDocument::AsyncRequestFullScreen(Element* aElement,
FullScreenOptions& aOptions)
{
NS_ASSERTION(aElement,
"Must pass non-null element to nsDocument::AsyncRequestFullScreen");
if (!aElement) {
return;
}
// Request full-screen asynchronously.
nsCOMPtr<nsIRunnable> event(new nsCallRequestFullScreen(aElement, aOptions));
NS_DispatchToCurrentThread(event);
}
static void
LogFullScreenDenied(bool aLogFailure, const char* aMessage, nsIDocument* aDoc)
{
if (!aLogFailure) {
return;
}
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(aDoc,
NS_LITERAL_STRING("mozfullscreenerror"),
true,
false);
asyncDispatcher->PostDOMEvent();
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
NS_LITERAL_CSTRING("DOM"), aDoc,
nsContentUtils::eDOM_PROPERTIES,
aMessage);
}
nsresult
nsDocument::AddFullscreenApprovedObserver()
{
if (mHasFullscreenApprovedObserver ||
!Preferences::GetBool("full-screen-api.approval-required")) {
return NS_OK;
}
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
NS_ENSURE_TRUE(os, NS_ERROR_FAILURE);
nsresult res = os->AddObserver(this, "fullscreen-approved", true);
NS_ENSURE_SUCCESS(res, res);
mHasFullscreenApprovedObserver = true;
return NS_OK;
}
nsresult
nsDocument::RemoveFullscreenApprovedObserver()
{
if (!mHasFullscreenApprovedObserver) {
return NS_OK;
}
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
NS_ENSURE_TRUE(os, NS_ERROR_FAILURE);
nsresult res = os->RemoveObserver(this, "fullscreen-approved");
NS_ENSURE_SUCCESS(res, res);
mHasFullscreenApprovedObserver = false;
return NS_OK;
}
void
nsDocument::CleanupFullscreenState()
{
if (!mFullScreenStack.IsEmpty()) {
// The top element in the full-screen stack will have full-screen
// style bits set on it and its ancestors. Remove the style bits.
// Note the non-top elements won't have the style bits set.
Element* top = FullScreenStackTop();
NS_ASSERTION(top, "Should have a top when full-screen stack isn't empty");
if (top) {
// Remove any VR state properties
top->DeleteProperty(nsGkAtoms::vr_state);
EventStateManager::SetFullScreenState(top, false);
}
mFullScreenStack.Clear();
}
SetApprovedForFullscreen(false);
RemoveFullscreenApprovedObserver();
mFullscreenRoot = nullptr;
}
bool
nsDocument::FullScreenStackPush(Element* aElement)
{
NS_ASSERTION(aElement, "Must pass non-null to FullScreenStackPush()");
Element* top = FullScreenStackTop();
if (top == aElement || !aElement) {
return false;
}
if (top) {
// We're pushing a new element onto the full-screen stack, so we must
// remove the ancestor and full-screen styles from the former top of the
// stack.
EventStateManager::SetFullScreenState(top, false);
}
EventStateManager::SetFullScreenState(aElement, true);
mFullScreenStack.AppendElement(do_GetWeakReference(aElement));
NS_ASSERTION(GetFullScreenElement() == aElement, "Should match");
return true;
}
void
nsDocument::FullScreenStackPop()
{
if (mFullScreenStack.IsEmpty()) {
return;
}
Element* top = FullScreenStackTop();
// Remove any VR state properties
top->DeleteProperty(nsGkAtoms::vr_state);
// Remove styles from existing top element.
EventStateManager::SetFullScreenState(top, false);
// Remove top element. Note the remaining top element in the stack
// will not have full-screen style bits set, so we will need to restore
// them on the new top element before returning.
uint32_t last = mFullScreenStack.Length() - 1;
mFullScreenStack.RemoveElementAt(last);
// Pop from the stack null elements (references to elements which have
// been GC'd since they were added to the stack) and elements which are
// no longer in this document.
while (!mFullScreenStack.IsEmpty()) {
Element* element = FullScreenStackTop();
if (!element || !element->IsInDoc() || element->OwnerDoc() != this) {
NS_ASSERTION(!element->IsFullScreenAncestor(),
"Should have already removed full-screen styles");
uint32_t last = mFullScreenStack.Length() - 1;
mFullScreenStack.RemoveElementAt(last);
} else {
// The top element of the stack is now an in-doc element. Apply the
// full-screen styles and return.
EventStateManager::SetFullScreenState(element, true);
break;
}
}
}
Element*
nsDocument::FullScreenStackTop()
{
if (mFullScreenStack.IsEmpty()) {
return nullptr;
}
uint32_t last = mFullScreenStack.Length() - 1;
nsCOMPtr<Element> element(do_QueryReferent(mFullScreenStack[last]));
NS_ASSERTION(element, "Should have full-screen element!");
NS_ASSERTION(element->IsInDoc(), "Full-screen element should be in doc");
NS_ASSERTION(element->OwnerDoc() == this, "Full-screen element should be in this doc");
return element;
}
// Returns true if aDoc is in the focused tab in the active window.
static bool
IsInActiveTab(nsIDocument* aDoc)
{
nsCOMPtr<nsIDocShell> docshell = aDoc->GetDocShell();
if (!docshell) {
return false;
}
bool isActive = false;
docshell->GetIsActive(&isActive);
if (!isActive) {
return false;
}
nsCOMPtr<nsIDocShellTreeItem> rootItem;
docshell->GetRootTreeItem(getter_AddRefs(rootItem));
if (!rootItem) {
return false;
}
nsCOMPtr<nsIDOMWindow> rootWin = rootItem->GetWindow();
if (!rootWin) {
return false;
}
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
return false;
}
nsCOMPtr<nsIDOMWindow> activeWindow;
fm->GetActiveWindow(getter_AddRefs(activeWindow));
if (!activeWindow) {
return false;
}
return activeWindow == rootWin;
}
nsresult nsDocument::RemoteFrameFullscreenChanged(nsIDOMElement* aFrameElement,
const nsAString& aOrigin)
{
// Ensure the frame element is the fullscreen element in this document.
// If the frame element is already the fullscreen element in this document,
// this has no effect.
nsCOMPtr<nsIContent> content(do_QueryInterface(aFrameElement));
FullScreenOptions opts;
RequestFullScreen(content->AsElement(),
opts,
/* aWasCallerChrome */ false,
/* aNotifyOnOriginChange */ false);
// Origin changed in child process, send notifiction, so that chrome can
// update the UI to reflect the fullscreen origin change if necessary.
// The BrowserElementChild listens on this, and forwards it over its
// parent process, where it is redispatched. Chrome (in the root process,
// which could be *this* process) listens for this notification so that
// it can show a warning or approval UI.
if (!aOrigin.IsEmpty()) {
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
os->NotifyObservers(GetFullscreenRootDocument(this),
"fullscreen-origin-change",
PromiseFlatString(aOrigin).get());
}
return NS_OK;
}
nsresult nsDocument::RemoteFrameFullscreenReverted()
{
RestorePreviousFullScreenState();
return NS_OK;
}
static void
ReleaseHMDInfoRef(void *, nsIAtom*, void *aPropertyValue, void *)
{
if (aPropertyValue) {
static_cast<gfx::VRHMDInfo*>(aPropertyValue)->Release();
}
}
void
nsDocument::RequestFullScreen(Element* aElement,
FullScreenOptions& aOptions,
bool aWasCallerChrome,
bool aNotifyOnOriginChange)
{
NS_ASSERTION(aElement,
"Must pass non-null element to nsDocument::RequestFullScreen");
if (!aElement || aElement == GetFullScreenElement()) {
return;
}
if (!aElement->IsInDoc()) {
LogFullScreenDenied(true, "FullScreenDeniedNotInDocument", this);
return;
}
if (aElement->OwnerDoc() != this) {
LogFullScreenDenied(true, "FullScreenDeniedMovedDocument", this);
return;
}
if (!GetWindow()) {
LogFullScreenDenied(true, "FullScreenDeniedLostWindow", this);
return;
}
if (nsContentUtils::IsFullscreenApiContentOnly() &&
nsContentUtils::IsChromeDoc(this)) {
// Block fullscreen requests in the chrome document when the fullscreen API
// is configured for content only.
LogFullScreenDenied(true, "FullScreenDeniedContentOnly", this);
return;
}
if (!IsFullScreenEnabled(aWasCallerChrome, true)) {
// IsFullScreenEnabled calls LogFullScreenDenied, no need to log.
return;
}
if (GetFullScreenElement() &&
!nsContentUtils::ContentIsDescendantOf(aElement, GetFullScreenElement())) {
// If this document is full-screen, only grant full-screen requests from
// a descendant of the current full-screen element.
LogFullScreenDenied(true, "FullScreenDeniedNotDescendant", this);
return;
}
if (!nsContentUtils::IsChromeDoc(this) && !IsInActiveTab(this)) {
LogFullScreenDenied(true, "FullScreenDeniedNotFocusedTab", this);
return;
}
// Deny requests when a windowed plugin is focused.
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
NS_WARNING("Failed to retrieve focus manager in full-screen request.");
return;
}
nsCOMPtr<nsIDOMElement> focusedElement;
fm->GetFocusedElement(getter_AddRefs(focusedElement));
if (focusedElement) {
nsCOMPtr<nsIContent> content = do_QueryInterface(focusedElement);
if (nsContentUtils::HasPluginWithUncontrolledEventDispatch(content)) {
LogFullScreenDenied(true, "FullScreenDeniedFocusedPlugin", this);
return;
}
}
// Stash a reference to any existing fullscreen doc, we'll use this later
// to detect if the origin which is fullscreen has changed.
nsCOMPtr<nsIDocument> previousFullscreenDoc = GetFullscreenLeaf(this);
AddFullscreenApprovedObserver();
// Stores a list of documents which we must dispatch "mozfullscreenchange"
// too. We're required by the spec to dispatch the events in root-to-leaf
// order, but we traverse the doctree in a leaf-to-root order, so we save
// references to the documents we must dispatch to so that we get the order
// as specified.
nsAutoTArray<nsIDocument*, 8> changed;
// Remember the root document, so that if a full-screen document is hidden
// we can reset full-screen state in the remaining visible full-screen documents.
nsIDocument* fullScreenRootDoc = GetFullscreenRootDocument(this);
if (fullScreenRootDoc->IsFullScreenDoc()) {
// A document is already in fullscreen, unlock the mouse pointer
// before setting a new document to fullscreen
UnlockPointer();
}
// If a document is already in fullscreen, then unlock the mouse pointer
// before setting a new document to fullscreen
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (pointerLockedElement) {
UnlockPointer();
}
// Process options -- in this case, just HMD
if (aOptions.mVRHMDDevice) {
nsRefPtr<gfx::VRHMDInfo> hmdRef = aOptions.mVRHMDDevice;
aElement->SetProperty(nsGkAtoms::vr_state, hmdRef.forget().take(),
ReleaseHMDInfoRef,
true);
}
// Set the full-screen element. This sets the full-screen style on the
// element, and the full-screen-ancestor styles on ancestors of the element
// in this document.
DebugOnly<bool> x = FullScreenStackPush(aElement);
NS_ASSERTION(x, "Full-screen state of requesting doc should always change!");
changed.AppendElement(this);
// Propagate up the document hierarchy, setting the full-screen element as
// the element's container in ancestor documents. This also sets the
// appropriate css styles as well. Note we don't propagate down the
// document hierarchy, the full-screen element (or its container) is not
// visible there. Stop when we reach the root document.
nsIDocument* child = this;
while (true) {
child->SetFullscreenRoot(fullScreenRootDoc);
NS_ASSERTION(child->GetFullscreenRoot() == fullScreenRootDoc,
"Fullscreen root should be set!");
if (child == fullScreenRootDoc) {
break;
}
nsIDocument* parent = child->GetParentDocument();
Element* element = parent->FindContentForSubDocument(child)->AsElement();
if (static_cast<nsDocument*>(parent)->FullScreenStackPush(element)) {
changed.AppendElement(parent);
child = parent;
} else {
// We've reached either the root, or a point in the doctree where the
// new full-screen element container is the same as the previous
// full-screen element's container. No more changes need to be made
// to the full-screen stacks of documents further up the tree.
break;
}
}
// Dispatch "mozfullscreenchange" events. Note this loop is in reverse
// order so that the events for the root document arrives before the leaf
// document, as required by the spec.
for (uint32_t i = 0; i < changed.Length(); ++i) {
DispatchFullScreenChange(changed[changed.Length() - i - 1]);
}
// If this document hasn't already been approved in this session,
// check to see if the user has granted the fullscreen access
// to the document's principal's host, if it has one. Note that documents
// in web apps which are the same origin as the web app are considered
// trusted and so are automatically approved.
if (!mIsApprovedForFullscreen) {
mIsApprovedForFullscreen =
!Preferences::GetBool("full-screen-api.approval-required") ||
NodePrincipal()->GetAppStatus() >= nsIPrincipal::APP_STATUS_INSTALLED ||
nsContentUtils::IsSitePermAllow(NodePrincipal(), "fullscreen");
}
// If this document, or a document with the same principal has not
// already been approved for fullscreen this fullscreen-session, dispatch
// an event so that chrome knows to pop up a warning/approval UI.
// Note previousFullscreenDoc=nullptr upon first entry, so we always
// take this path on the first time we enter fullscreen in a fullscreen
// session.
if (!mIsApprovedForFullscreen ||
!nsContentUtils::HaveEqualPrincipals(previousFullscreenDoc, this)) {
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(this,
NS_LITERAL_STRING("MozEnteredDomFullscreen"),
true,
true);
asyncDispatcher->PostDOMEvent();
}
#ifdef DEBUG
// Note assertions must run before SetWindowFullScreen() as that does
// synchronous event dispatch which can run script which exits full-screen!
NS_ASSERTION(GetFullScreenElement() == aElement,
"Full-screen element should be the requested element!");
NS_ASSERTION(IsFullScreenDoc(), "Should be full-screen doc");
nsCOMPtr<nsIDOMElement> fse;
GetMozFullScreenElement(getter_AddRefs(fse));
nsCOMPtr<nsIContent> c(do_QueryInterface(fse));
NS_ASSERTION(c->AsElement() == aElement,
"GetMozFullScreenElement should match GetFullScreenElement()");
#endif
// The origin which is fullscreen changed, send a notifiction so that the
// root document knows the origin of the document which requested fullscreen.
// This is used for the fullscreen approval UI. If we're in a child
// process, the root BrowserElementChild listens for this notification,
// and forwards it across to its BrowserElementParent, which
// re-broadcasts the message for the root document in its process.
if (aNotifyOnOriginChange &&
!nsContentUtils::HaveEqualPrincipals(previousFullscreenDoc, this)) {
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
nsIDocument* root = GetFullscreenRootDocument(this);
nsAutoString origin;
nsContentUtils::GetUTFOrigin(NodePrincipal(), origin);
os->NotifyObservers(root, "fullscreen-origin-change", origin.get());
}
// Make the window full-screen. Note we must make the state changes above
// before making the window full-screen, as then the document reports as
// being in full-screen mode when the chrome "fullscreen" event fires,
// enabling chrome to distinguish between browser and dom full-screen
// modes. Also note that nsGlobalWindow::SetFullScreen() (which
// SetWindowFullScreen() calls) proxies to the root window in its hierarchy,
// and does not operate on the a per-nsIDOMWindow basis.
SetWindowFullScreen(this, true, aOptions.mVRHMDDevice);
}
NS_IMETHODIMP
nsDocument::GetMozFullScreenElement(nsIDOMElement **aFullScreenElement)
{
ErrorResult rv;
Element* el = GetMozFullScreenElement(rv);
if (rv.Failed()) {
return rv.ErrorCode();
}
nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(el);
retval.forget(aFullScreenElement);
return NS_OK;
}
Element*
nsDocument::GetMozFullScreenElement(ErrorResult& rv)
{
if (IsFullScreenDoc()) {
// Must have a full-screen element while in full-screen mode.
Element* el = GetFullScreenElement();
if (!el) {
rv.Throw(NS_ERROR_UNEXPECTED);
}
return el;
}
return nullptr;
}
Element*
nsDocument::GetFullScreenElement()
{
Element* element = FullScreenStackTop();
NS_ASSERTION(!element ||
element->IsFullScreenAncestor(),
"Fullscreen element should have fullscreen styles applied");
return element;
}
NS_IMETHODIMP
nsDocument::GetMozFullScreen(bool *aFullScreen)
{
*aFullScreen = MozFullScreen();
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetMozFullScreenEnabled(bool *aFullScreen)
{
NS_ENSURE_ARG_POINTER(aFullScreen);
*aFullScreen = MozFullScreenEnabled();
return NS_OK;
}
bool
nsDocument::MozFullScreenEnabled()
{
return IsFullScreenEnabled(nsContentUtils::IsCallerChrome(), false);
}
static bool
HasFullScreenSubDocument(nsIDocument* aDoc)
{
uint32_t count = CountFullscreenSubDocuments(aDoc);
NS_ASSERTION(count <= 1, "Fullscreen docs should have at most 1 fullscreen child!");
return count >= 1;
}
bool
nsDocument::IsFullScreenEnabled(bool aCallerIsChrome, bool aLogFailure)
{
if (nsContentUtils::IsFullScreenApiEnabled() && aCallerIsChrome) {
// Chrome code can always use the full-screen API, provided it's not
// explicitly disabled. Note IsCallerChrome() returns true when running
// in an nsRunnable, so don't use GetMozFullScreenEnabled() from an
// nsRunnable!
return true;
}
if (!nsContentUtils::IsFullScreenApiEnabled()) {
LogFullScreenDenied(aLogFailure, "FullScreenDeniedDisabled", this);
return false;
}
if (!IsVisible()) {
LogFullScreenDenied(aLogFailure, "FullScreenDeniedHidden", this);
return false;
}
if (HasFullScreenSubDocument(this)) {
LogFullScreenDenied(aLogFailure, "FullScreenDeniedSubDocFullScreen", this);
return false;
}
// Ensure that all ancestor <iframe> elements have the allowfullscreen
// boolean attribute set.
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
bool allowed = false;
if (docShell) {
docShell->GetFullscreenAllowed(&allowed);
}
if (!allowed) {
LogFullScreenDenied(aLogFailure, "FullScreenDeniedIframeNotAllowed", this);
}
return allowed;
}
static void
DispatchPointerLockChange(nsIDocument* aTarget)
{
if (!aTarget) {
return;
}
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(aTarget,
NS_LITERAL_STRING("mozpointerlockchange"),
true,
false);
asyncDispatcher->PostDOMEvent();
}
static void
DispatchPointerLockError(nsIDocument* aTarget)
{
if (!aTarget) {
return;
}
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(aTarget,
NS_LITERAL_STRING("mozpointerlockerror"),
true,
false);
asyncDispatcher->PostDOMEvent();
}
mozilla::StaticRefPtr<nsPointerLockPermissionRequest> gPendingPointerLockRequest;
class nsPointerLockPermissionRequest : public nsRunnable,
public nsIContentPermissionRequest
{
public:
nsPointerLockPermissionRequest(Element* aElement, bool aUserInputOrChromeCaller)
: mElement(do_GetWeakReference(aElement)),
mDocument(do_GetWeakReference(aElement->OwnerDoc())),
mUserInputOrChromeCaller(aUserInputOrChromeCaller) {}
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSICONTENTPERMISSIONREQUEST
NS_IMETHOD Run()
{
nsCOMPtr<Element> e = do_QueryReferent(mElement);
nsCOMPtr<nsIDocument> d = do_QueryReferent(mDocument);
if (!e || !d || gPendingPointerLockRequest != this ||
e->GetUncomposedDoc() != d) {
Handled();
DispatchPointerLockError(d);
return NS_OK;
}
// We're about to enter fullscreen mode.
nsDocument* doc = static_cast<nsDocument*>(d.get());
if (doc->mAsyncFullscreenPending ||
(doc->mHasFullscreenApprovedObserver && !doc->mIsApprovedForFullscreen)) {
// We're still waiting for approval.
return NS_OK;
}
if (doc->mIsApprovedForFullscreen || doc->mAllowRelocking) {
Allow(JS::UndefinedHandleValue);
return NS_OK;
}
// In non-fullscreen mode user input (or chrome caller) is required!
// Also, don't let the page to try to get the permission too many times.
if (!mUserInputOrChromeCaller ||
doc->mCancelledPointerLockRequests > 2) {
Handled();
DispatchPointerLockError(d);
return NS_OK;
}
// Handling a request from user input in non-fullscreen mode.
// Do a normal permission check.
nsCOMPtr<nsPIDOMWindow> window = doc->GetInnerWindow();
nsContentPermissionUtils::AskPermission(this, window);
return NS_OK;
}
void Handled()
{
mElement = nullptr;
mDocument = nullptr;
if (gPendingPointerLockRequest == this) {
gPendingPointerLockRequest = nullptr;
}
}
nsWeakPtr mElement;
nsWeakPtr mDocument;
bool mUserInputOrChromeCaller;
protected:
virtual ~nsPointerLockPermissionRequest() {}
};
NS_IMPL_ISUPPORTS_INHERITED(nsPointerLockPermissionRequest,
nsRunnable,
nsIContentPermissionRequest)
NS_IMETHODIMP
nsPointerLockPermissionRequest::GetTypes(nsIArray** aTypes)
{
nsTArray<nsString> emptyOptions;
return nsContentPermissionUtils::CreatePermissionArray(NS_LITERAL_CSTRING("pointerLock"),
NS_LITERAL_CSTRING("unused"),
emptyOptions,
aTypes);
}
NS_IMETHODIMP
nsPointerLockPermissionRequest::GetPrincipal(nsIPrincipal** aPrincipal)
{
nsCOMPtr<nsIDocument> d = do_QueryReferent(mDocument);
if (d) {
NS_ADDREF(*aPrincipal = d->NodePrincipal());
}
return NS_OK;
}
NS_IMETHODIMP
nsPointerLockPermissionRequest::GetWindow(nsIDOMWindow** aWindow)
{
nsCOMPtr<nsIDocument> d = do_QueryReferent(mDocument);
if (d) {
NS_IF_ADDREF(*aWindow = d->GetInnerWindow());
}
return NS_OK;
}
NS_IMETHODIMP
nsPointerLockPermissionRequest::GetElement(nsIDOMElement** aElement)
{
// It is enough to implement GetWindow.
*aElement = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsPointerLockPermissionRequest::Cancel()
{
nsCOMPtr<nsIDocument> d = do_QueryReferent(mDocument);
Handled();
if (d) {
static_cast<nsDocument*>(d.get())->mCancelledPointerLockRequests++;
DispatchPointerLockError(d);
}
return NS_OK;
}
NS_IMETHODIMP
nsPointerLockPermissionRequest::Allow(JS::HandleValue aChoices)
{
MOZ_ASSERT(aChoices.isUndefined());
nsCOMPtr<Element> e = do_QueryReferent(mElement);
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocument);
nsDocument* d = static_cast<nsDocument*>(doc.get());
if (!e || !d || gPendingPointerLockRequest != this ||
e->GetUncomposedDoc() != d ||
(!mUserInputOrChromeCaller && !d->mIsApprovedForFullscreen)) {
Handled();
DispatchPointerLockError(d);
return NS_OK;
}
// Mark handled here so that we don't need to call it everywhere below.
Handled();
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (e == pointerLockedElement) {
DispatchPointerLockChange(d);
return NS_OK;
}
// Note, we must bypass focus change, so pass true as the last parameter!
if (!d->ShouldLockPointer(e, pointerLockedElement, true)) {
DispatchPointerLockError(d);
return NS_OK;
}
if (!d->SetPointerLock(e, NS_STYLE_CURSOR_NONE)) {
DispatchPointerLockError(d);
return NS_OK;
}
d->mCancelledPointerLockRequests = 0;
e->SetPointerLock();
EventStateManager::sPointerLockedElement = do_GetWeakReference(e);
EventStateManager::sPointerLockedDoc = do_GetWeakReference(doc);
NS_ASSERTION(EventStateManager::sPointerLockedElement &&
EventStateManager::sPointerLockedDoc,
"aElement and this should support weak references!");
DispatchPointerLockChange(d);
return NS_OK;
}
void
nsDocument::SetApprovedForFullscreen(bool aIsApproved)
{
mIsApprovedForFullscreen = aIsApproved;
}
nsresult
nsDocument::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *aData)
{
if (strcmp("fullscreen-approved", aTopic) == 0) {
nsCOMPtr<nsIDocument> subject(do_QueryInterface(aSubject));
if (subject != this) {
return NS_OK;
}
SetApprovedForFullscreen(true);
if (gPendingPointerLockRequest) {
// We have a request pending. Create a clone of it and re-dispatch so that
// Run() method gets called again.
nsCOMPtr<Element> el =
do_QueryReferent(gPendingPointerLockRequest->mElement);
nsCOMPtr<nsIDocument> doc =
do_QueryReferent(gPendingPointerLockRequest->mDocument);
bool userInputOrChromeCaller =
gPendingPointerLockRequest->mUserInputOrChromeCaller;
gPendingPointerLockRequest->Handled();
if (doc == this && el && el->GetUncomposedDoc() == doc) {
nsPointerLockPermissionRequest* clone =
new nsPointerLockPermissionRequest(el, userInputOrChromeCaller);
gPendingPointerLockRequest = clone;
nsCOMPtr<nsIRunnable> r = gPendingPointerLockRequest.get();
NS_DispatchToMainThread(r);
}
}
} else if (strcmp("app-theme-changed", aTopic) == 0) {
if (!nsContentUtils::IsSystemPrincipal(NodePrincipal()) &&
!IsUnstyledDocument()) {
// We don't want to style the chrome window, only app ones.
OnAppThemeChanged();
}
}
return NS_OK;
}
void
nsDocument::OnAppThemeChanged()
{
// Bail out if there is no theme support set up properly.
auto themeOrigin = Preferences::GetString("b2g.theme.origin");
if (!themeOrigin || !Preferences::GetBool("dom.mozApps.themable")) {
return;
}
for (int32_t i = 0; i < GetNumberOfStyleSheets(); i++) {
nsRefPtr<CSSStyleSheet> sheet = do_QueryObject(GetStyleSheetAt(i));
if (!sheet) {
continue;
}
nsINode* owningNode = sheet->GetOwnerNode();
if (!owningNode) {
continue;
}
// Get a DOM stylesheet link to check the href against the theme origin.
nsIURI* sheetURI = sheet->GetOriginalURI();
if (!sheetURI) {
continue;
}
nsAutoString sheetOrigin;
nsContentUtils::GetUTFOrigin(sheetURI, sheetOrigin);
if (!sheetOrigin.Equals(themeOrigin)) {
continue;
}
// Finally getting a Stylesheet link.
nsCOMPtr<nsIStyleSheetLinkingElement> link = do_QueryInterface(owningNode);
if (!link) {
continue;
}
bool willNotify;
bool isAlternate;
link->UpdateStyleSheet(nullptr, &willNotify, &isAlternate, true);
}
}
void
nsDocument::RequestPointerLock(Element* aElement)
{
NS_ASSERTION(aElement,
"Must pass non-null element to nsDocument::RequestPointerLock");
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (aElement == pointerLockedElement) {
DispatchPointerLockChange(this);
return;
}
if (!ShouldLockPointer(aElement, pointerLockedElement)) {
DispatchPointerLockError(this);
return;
}
bool userInputOrChromeCaller = EventStateManager::IsHandlingUserInput() ||
nsContentUtils::IsCallerChrome();
gPendingPointerLockRequest =
new nsPointerLockPermissionRequest(aElement, userInputOrChromeCaller);
nsCOMPtr<nsIRunnable> r = gPendingPointerLockRequest.get();
NS_DispatchToMainThread(r);
}
bool
nsDocument::ShouldLockPointer(Element* aElement, Element* aCurrentLock,
bool aNoFocusCheck)
{
// Check if pointer lock pref is enabled
if (!Preferences::GetBool("full-screen-api.pointer-lock.enabled")) {
NS_WARNING("ShouldLockPointer(): Pointer Lock pref not enabled");
return false;
}
if (aCurrentLock && aCurrentLock->OwnerDoc() != aElement->OwnerDoc()) {
NS_WARNING("ShouldLockPointer(): Existing pointer lock element in a different document");
return false;
}
if (!aElement->IsInDoc()) {
NS_WARNING("ShouldLockPointer(): Element without Document");
return false;
}
if (mSandboxFlags & SANDBOXED_POINTER_LOCK) {
NS_WARNING("ShouldLockPointer(): Document is sandboxed and doesn't allow pointer-lock");
return false;
}
// Check if the element is in a document with a docshell.
nsCOMPtr<nsIDocument> ownerDoc = aElement->OwnerDoc();
if (!ownerDoc->GetContainer()) {
return false;
}
nsCOMPtr<nsPIDOMWindow> ownerWindow = ownerDoc->GetWindow();
if (!ownerWindow) {
return false;
}
nsCOMPtr<nsPIDOMWindow> ownerInnerWindow = ownerDoc->GetInnerWindow();
if (!ownerInnerWindow) {
return false;
}
if (ownerWindow->GetCurrentInnerWindow() != ownerInnerWindow) {
return false;
}
nsCOMPtr<nsIDOMWindow> top;
ownerWindow->GetScriptableTop(getter_AddRefs(top));
nsCOMPtr<nsPIDOMWindow> piTop = do_QueryInterface(top);
if (!piTop || !piTop->GetExtantDoc() ||
piTop->GetExtantDoc()->Hidden()) {
NS_WARNING("ShouldLockPointer(): Top document isn't visible.");
return false;
}
if (!aNoFocusCheck) {
mozilla::ErrorResult rv;
if (!piTop->GetExtantDoc()->HasFocus(rv)) {
NS_WARNING("ShouldLockPointer(): Top document isn't focused.");
return false;
}
}
return true;
}
bool
nsDocument::SetPointerLock(Element* aElement, int aCursorStyle)
{
// NOTE: aElement will be nullptr when unlocking.
nsCOMPtr<nsPIDOMWindow> window = GetWindow();
if (!window) {
NS_WARNING("SetPointerLock(): No Window");
return false;
}
nsIDocShell *docShell = window->GetDocShell();
if (!docShell) {
NS_WARNING("SetPointerLock(): No DocShell (window already closed?)");
return false;
}
nsRefPtr<nsPresContext> presContext;
docShell->GetPresContext(getter_AddRefs(presContext));
if (!presContext) {
NS_WARNING("SetPointerLock(): Unable to get presContext in \
domWindow->GetDocShell()->GetPresContext()");
return false;
}
nsCOMPtr<nsIPresShell> shell = presContext->PresShell();
if (!shell) {
NS_WARNING("SetPointerLock(): Unable to find presContext->PresShell()");
return false;
}
nsIFrame* rootFrame = shell->GetRootFrame();
if (!rootFrame) {
NS_WARNING("SetPointerLock(): Unable to get root frame");
return false;
}
nsCOMPtr<nsIWidget> widget = rootFrame->GetNearestWidget();
if (!widget) {
NS_WARNING("SetPointerLock(): Unable to find widget in \
shell->GetRootFrame()->GetNearestWidget();");
return false;
}
if (aElement && (aElement->OwnerDoc() != this)) {
NS_WARNING("SetPointerLock(): Element not in this document.");
return false;
}
// Hide the cursor and set pointer lock for future mouse events
nsRefPtr<EventStateManager> esm = presContext->EventStateManager();
esm->SetCursor(aCursorStyle, nullptr, false,
0.0f, 0.0f, widget, true);
esm->SetPointerLock(widget, aElement);
return true;
}
void
nsDocument::UnlockPointer(nsIDocument* aDoc)
{
if (!EventStateManager::sIsPointerLocked) {
return;
}
nsCOMPtr<nsIDocument> pointerLockedDoc =
do_QueryReferent(EventStateManager::sPointerLockedDoc);
if (!pointerLockedDoc || (aDoc && aDoc != pointerLockedDoc)) {
return;
}
nsDocument* doc = static_cast<nsDocument*>(pointerLockedDoc.get());
if (!doc->SetPointerLock(nullptr, NS_STYLE_CURSOR_AUTO)) {
return;
}
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (pointerLockedElement) {
pointerLockedElement->ClearPointerLock();
}
EventStateManager::sPointerLockedElement = nullptr;
EventStateManager::sPointerLockedDoc = nullptr;
static_cast<nsDocument*>(pointerLockedDoc.get())->mAllowRelocking = !!aDoc;
gPendingPointerLockRequest = nullptr;
DispatchPointerLockChange(pointerLockedDoc);
}
void
nsIDocument::UnlockPointer(nsIDocument* aDoc)
{
nsDocument::UnlockPointer(aDoc);
}
NS_IMETHODIMP
nsDocument::MozExitPointerLock()
{
nsIDocument::MozExitPointerLock();
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetMozPointerLockElement(nsIDOMElement** aPointerLockedElement)
{
Element* el = nsIDocument::GetMozPointerLockElement();
nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(el);
retval.forget(aPointerLockedElement);
return NS_OK;
}
Element*
nsIDocument::GetMozPointerLockElement()
{
nsCOMPtr<Element> pointerLockedElement =
do_QueryReferent(EventStateManager::sPointerLockedElement);
if (!pointerLockedElement) {
return nullptr;
}
// Make sure pointer locked element is in the same document.
nsCOMPtr<nsIDocument> pointerLockedDoc =
do_QueryReferent(EventStateManager::sPointerLockedDoc);
if (pointerLockedDoc != this) {
return nullptr;
}
return pointerLockedElement;
}
void
nsDocument::XPCOMShutdown()
{
gPendingPointerLockRequest = nullptr;
sProcessingStack.reset();
}
void
nsDocument::UpdateVisibilityState()
{
dom::VisibilityState oldState = mVisibilityState;
mVisibilityState = GetVisibilityState();
if (oldState != mVisibilityState) {
nsContentUtils::DispatchTrustedEvent(this, static_cast<nsIDocument*>(this),
NS_LITERAL_STRING("visibilitychange"),
/* bubbles = */ true,
/* cancelable = */ false);
nsContentUtils::DispatchTrustedEvent(this, static_cast<nsIDocument*>(this),
NS_LITERAL_STRING("mozvisibilitychange"),
/* bubbles = */ true,
/* cancelable = */ false);
EnumerateActivityObservers(NotifyActivityChanged, nullptr);
}
}
VisibilityState
nsDocument::GetVisibilityState() const
{
// We have to check a few pieces of information here:
// 1) Are we in bfcache (!IsVisible())? If so, nothing else matters.
// 2) Do we have an outer window? If not, we're hidden. Note that we don't
// want to use GetWindow here because it does weird groveling for windows
// in some cases.
// 3) Is our outer window background? If so, we're hidden.
// Otherwise, we're visible.
if (!IsVisible() || !mWindow || !mWindow->GetOuterWindow() ||
mWindow->GetOuterWindow()->IsBackground()) {
return dom::VisibilityState::Hidden;
}
return dom::VisibilityState::Visible;
}
/* virtual */ void
nsDocument::PostVisibilityUpdateEvent()
{
nsCOMPtr<nsIRunnable> event =
NS_NewRunnableMethod(this, &nsDocument::UpdateVisibilityState);
NS_DispatchToMainThread(event);
}
NS_IMETHODIMP
nsDocument::GetMozHidden(bool* aHidden)
{
*aHidden = MozHidden();
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetHidden(bool* aHidden)
{
*aHidden = Hidden();
return NS_OK;
}
NS_IMETHODIMP
nsDocument::GetMozVisibilityState(nsAString& aState)
{
WarnOnceAbout(ePrefixedVisibilityAPI);
return GetVisibilityState(aState);
}
NS_IMETHODIMP
nsDocument::GetVisibilityState(nsAString& aState)
{
const EnumEntry& entry =
VisibilityStateValues::strings[static_cast<int>(mVisibilityState)];
aState.AssignASCII(entry.value, entry.length);
return NS_OK;
}
/* virtual */ void
nsIDocument::DocAddSizeOfExcludingThis(nsWindowSizes* aWindowSizes) const
{
aWindowSizes->mDOMOtherSize +=
nsINode::SizeOfExcludingThis(aWindowSizes->mMallocSizeOf);
if (mPresShell) {
mPresShell->AddSizeOfIncludingThis(aWindowSizes->mMallocSizeOf,
&aWindowSizes->mArenaStats,
&aWindowSizes->mLayoutPresShellSize,
&aWindowSizes->mLayoutStyleSetsSize,
&aWindowSizes->mLayoutTextRunsSize,
&aWindowSizes->mLayoutPresContextSize);
}
aWindowSizes->mPropertyTablesSize +=
mPropertyTable.SizeOfExcludingThis(aWindowSizes->mMallocSizeOf);
for (uint32_t i = 0, count = mExtraPropertyTables.Length();
i < count; ++i) {
aWindowSizes->mPropertyTablesSize +=
mExtraPropertyTables[i]->SizeOfIncludingThis(aWindowSizes->mMallocSizeOf);
}
if (EventListenerManager* elm = GetExistingListenerManager()) {
aWindowSizes->mDOMEventListenersCount += elm->ListenerCount();
}
// Measurement of the following members may be added later if DMD finds it
// is worthwhile:
// - many!
}
void
nsIDocument::DocAddSizeOfIncludingThis(nsWindowSizes* aWindowSizes) const
{
aWindowSizes->mDOMOtherSize += aWindowSizes->mMallocSizeOf(this);
DocAddSizeOfExcludingThis(aWindowSizes);
}
static size_t
SizeOfStyleSheetsElementIncludingThis(nsIStyleSheet* aStyleSheet,
MallocSizeOf aMallocSizeOf,
void* aData)
{
if (!aStyleSheet->GetOwningDocument()) {
// Avoid over-reporting shared sheets.
return 0;
}
return aStyleSheet->SizeOfIncludingThis(aMallocSizeOf);
}
size_t
nsDocument::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
{
// This SizeOfExcludingThis() overrides the one from nsINode. But
// nsDocuments can only appear at the top of the DOM tree, and we use the
// specialized DocAddSizeOfExcludingThis() in that case. So this should never
// be called.
MOZ_CRASH();
}
void
nsDocument::DocAddSizeOfExcludingThis(nsWindowSizes* aWindowSizes) const
{
nsIDocument::DocAddSizeOfExcludingThis(aWindowSizes);
for (nsIContent* node = nsINode::GetFirstChild();
node;
node = node->GetNextNode(this))
{
size_t nodeSize = node->SizeOfIncludingThis(aWindowSizes->mMallocSizeOf);
size_t* p;
switch (node->NodeType()) {
case nsIDOMNode::ELEMENT_NODE:
p = &aWindowSizes->mDOMElementNodesSize;
break;
case nsIDOMNode::TEXT_NODE:
p = &aWindowSizes->mDOMTextNodesSize;
break;
case nsIDOMNode::CDATA_SECTION_NODE:
p = &aWindowSizes->mDOMCDATANodesSize;
break;
case nsIDOMNode::COMMENT_NODE:
p = &aWindowSizes->mDOMCommentNodesSize;
break;
default:
p = &aWindowSizes->mDOMOtherSize;
break;
}
*p += nodeSize;
if (EventListenerManager* elm = node->GetExistingListenerManager()) {
aWindowSizes->mDOMEventListenersCount += elm->ListenerCount();
}
}
aWindowSizes->mStyleSheetsSize +=
mStyleSheets.SizeOfExcludingThis(SizeOfStyleSheetsElementIncludingThis,
aWindowSizes->mMallocSizeOf);
// Note that we do not own the sheets pointed to by mOnDemandBuiltInUASheets
// (the nsLayoutStyleSheetCache singleton does) so pass nullptr as the
// aSizeOfElementIncludingThis callback argument.
aWindowSizes->mStyleSheetsSize +=
mOnDemandBuiltInUASheets.SizeOfExcludingThis(nullptr,
aWindowSizes->mMallocSizeOf);
aWindowSizes->mStyleSheetsSize +=
mAdditionalSheets[eAgentSheet].
SizeOfExcludingThis(SizeOfStyleSheetsElementIncludingThis,
aWindowSizes->mMallocSizeOf);
aWindowSizes->mStyleSheetsSize +=
mAdditionalSheets[eUserSheet].
SizeOfExcludingThis(SizeOfStyleSheetsElementIncludingThis,
aWindowSizes->mMallocSizeOf);
aWindowSizes->mStyleSheetsSize +=
mAdditionalSheets[eAuthorSheet].
SizeOfExcludingThis(SizeOfStyleSheetsElementIncludingThis,
aWindowSizes->mMallocSizeOf);
// Lumping in the loader with the style-sheets size is not ideal,
// but most of the things in there are in fact stylesheets, so it
// doesn't seem worthwhile to separate it out.
aWindowSizes->mStyleSheetsSize +=
CSSLoader()->SizeOfIncludingThis(aWindowSizes->mMallocSizeOf);
aWindowSizes->mDOMOtherSize +=
mAttrStyleSheet ?
mAttrStyleSheet->DOMSizeOfIncludingThis(aWindowSizes->mMallocSizeOf) :
0;
aWindowSizes->mDOMOtherSize +=
mSVGAttrAnimationRuleProcessor ?
mSVGAttrAnimationRuleProcessor->DOMSizeOfIncludingThis(
aWindowSizes->mMallocSizeOf) :
0;
aWindowSizes->mDOMOtherSize +=
mStyledLinks.SizeOfExcludingThis(nullptr, aWindowSizes->mMallocSizeOf);
aWindowSizes->mDOMOtherSize +=
mIdentifierMap.SizeOfExcludingThis(aWindowSizes->mMallocSizeOf);
// Measurement of the following members may be added later if DMD finds it
// is worthwhile:
// - many!
}
NS_IMETHODIMP
nsDocument::QuerySelector(const nsAString& aSelector, nsIDOMElement **aReturn)
{
return nsINode::QuerySelector(aSelector, aReturn);
}
NS_IMETHODIMP
nsDocument::QuerySelectorAll(const nsAString& aSelector, nsIDOMNodeList **aReturn)
{
return nsINode::QuerySelectorAll(aSelector, aReturn);
}
already_AddRefed<nsIDocument>
nsIDocument::Constructor(const GlobalObject& aGlobal,
ErrorResult& rv)
{
nsCOMPtr<nsIScriptGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
if (!global) {
rv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
nsCOMPtr<nsIScriptObjectPrincipal> prin = do_QueryInterface(aGlobal.GetAsSupports());
if (!prin) {
rv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), "about:blank");
if (!uri) {
rv.Throw(NS_ERROR_OUT_OF_MEMORY);
return nullptr;
}
nsCOMPtr<nsIDOMDocument> document;
nsresult res =
NS_NewDOMDocument(getter_AddRefs(document),
NullString(),
EmptyString(),
nullptr,
uri,
uri,
prin->GetPrincipal(),
true,
global,
DocumentFlavorPlain);
if (NS_FAILED(res)) {
rv.Throw(res);
return nullptr;
}
nsCOMPtr<nsIDocument> doc = do_QueryInterface(document);
doc->SetReadyStateInternal(nsIDocument::READYSTATE_COMPLETE);
return doc.forget();
}
XPathExpression*
nsIDocument::CreateExpression(const nsAString& aExpression,
XPathNSResolver* aResolver,
ErrorResult& rv)
{
return XPathEvaluator()->CreateExpression(aExpression, aResolver, rv);
}
nsINode*
nsIDocument::CreateNSResolver(nsINode& aNodeResolver)
{
return XPathEvaluator()->CreateNSResolver(aNodeResolver);
}
already_AddRefed<XPathResult>
nsIDocument::Evaluate(JSContext* aCx, const nsAString& aExpression,
nsINode& aContextNode, XPathNSResolver* aResolver,
uint16_t aType, JS::Handle<JSObject*> aResult,
ErrorResult& rv)
{
return XPathEvaluator()->Evaluate(aCx, aExpression, aContextNode, aResolver,
aType, aResult, rv);
}
NS_IMETHODIMP
nsDocument::Evaluate(const nsAString& aExpression, nsIDOMNode* aContextNode,
nsIDOMNode* aResolver, uint16_t aType,
nsISupports* aInResult, nsISupports** aResult)
{
return XPathEvaluator()->Evaluate(aExpression, aContextNode, aResolver, aType,
aInResult, aResult);
}
XPathEvaluator*
nsIDocument::XPathEvaluator()
{
if (!mXPathEvaluator) {
mXPathEvaluator = new dom::XPathEvaluator(this);
}
return mXPathEvaluator;
}
already_AddRefed<nsIDocumentEncoder>
nsIDocument::GetCachedEncoder()
{
return mCachedEncoder.forget();
}
void
nsIDocument::SetCachedEncoder(already_AddRefed<nsIDocumentEncoder> aEncoder)
{
mCachedEncoder = aEncoder;
}
void
nsIDocument::SetContentTypeInternal(const nsACString& aType)
{
mCachedEncoder = nullptr;
mContentType = aType;
}
nsILoadContext*
nsIDocument::GetLoadContext() const
{
return mDocumentContainer;
}
nsIDocShell*
nsIDocument::GetDocShell() const
{
return mDocumentContainer;
}
void
nsIDocument::SetStateObject(nsIStructuredCloneContainer *scContainer)
{
mStateObjectContainer = scContainer;
mStateObjectCached = nullptr;
}
already_AddRefed<Element>
nsIDocument::CreateHTMLElement(nsIAtom* aTag)
{
nsRefPtr<mozilla::dom::NodeInfo> nodeInfo;
nodeInfo = mNodeInfoManager->GetNodeInfo(aTag, nullptr, kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
MOZ_ASSERT(nodeInfo, "GetNodeInfo should never fail");
nsCOMPtr<Element> element;
DebugOnly<nsresult> rv = NS_NewHTMLElement(getter_AddRefs(element),
nodeInfo.forget(),
mozilla::dom::NOT_FROM_PARSER);
MOZ_ASSERT(NS_SUCCEEDED(rv), "NS_NewHTMLElement should never fail");
return element.forget();
}
bool
MarkDocumentTreeToBeInSyncOperation(nsIDocument* aDoc, void* aData)
{
nsCOMArray<nsIDocument>* documents =
static_cast<nsCOMArray<nsIDocument>*>(aData);
if (aDoc) {
aDoc->SetIsInSyncOperation(true);
documents->AppendObject(aDoc);
aDoc->EnumerateSubDocuments(MarkDocumentTreeToBeInSyncOperation, aData);
}
return true;
}
nsAutoSyncOperation::nsAutoSyncOperation(nsIDocument* aDoc)
{
mMicroTaskLevel = nsContentUtils::MicroTaskLevel();
nsContentUtils::SetMicroTaskLevel(0);
if (aDoc) {
nsPIDOMWindow* win = aDoc->GetWindow();
if (win) {
nsCOMPtr<nsIDOMWindow> topWindow;
win->GetTop(getter_AddRefs(topWindow));
nsCOMPtr<nsPIDOMWindow> top = do_QueryInterface(topWindow);
if (top) {
nsCOMPtr<nsIDocument> doc = top->GetExtantDoc();
MarkDocumentTreeToBeInSyncOperation(doc, &mDocuments);
}
}
}
}
nsAutoSyncOperation::~nsAutoSyncOperation()
{
for (int32_t i = 0; i < mDocuments.Count(); ++i) {
mDocuments[i]->SetIsInSyncOperation(false);
}
nsContentUtils::SetMicroTaskLevel(mMicroTaskLevel);
}
FontFaceSet*
nsIDocument::GetFonts(ErrorResult& aRv)
{
nsIPresShell* shell = GetShell();
if (!shell) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
nsPresContext* presContext = shell->GetPresContext();
if (!presContext) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return presContext->Fonts();
}
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