gecko-dev/dom/html/HTMLSharedObjectElement.cpp
Edgar Chen 64cc70e197 Bug 1308069 - Clear pending error event fired by src="" case if src changed before it fired. r=bz
MozReview-Commit-ID: B8f975mZNN9

--HG--
extra : rebase_source : b44b969c733160a9e96139b6b55ac60fb140e478
2016-10-06 12:30:35 +08:00

420 lines
13 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "mozilla/EventStates.h"
#include "mozilla/dom/HTMLSharedObjectElement.h"
#include "mozilla/dom/HTMLEmbedElementBinding.h"
#include "mozilla/dom/HTMLAppletElementBinding.h"
#include "mozilla/dom/ElementInlines.h"
#include "nsIDocument.h"
#include "nsIPluginDocument.h"
#include "nsIDOMDocument.h"
#include "nsThreadUtils.h"
#include "nsIScriptError.h"
#include "nsIWidget.h"
#include "nsContentUtils.h"
#ifdef XP_MACOSX
#include "mozilla/EventDispatcher.h"
#include "mozilla/dom/Event.h"
#endif
#include "mozilla/dom/HTMLObjectElement.h"
NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(SharedObject)
namespace mozilla {
namespace dom {
HTMLSharedObjectElement::HTMLSharedObjectElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
FromParser aFromParser)
: nsGenericHTMLElement(aNodeInfo),
mIsDoneAddingChildren(mNodeInfo->Equals(nsGkAtoms::embed) || !aFromParser)
{
RegisterActivityObserver();
SetIsNetworkCreated(aFromParser == FROM_PARSER_NETWORK);
// By default we're in the loading state
AddStatesSilently(NS_EVENT_STATE_LOADING);
}
HTMLSharedObjectElement::~HTMLSharedObjectElement()
{
#ifdef XP_MACOSX
HTMLObjectElement::OnFocusBlurPlugin(this, false);
#endif
UnregisterActivityObserver();
DestroyImageLoadingContent();
}
bool
HTMLSharedObjectElement::IsDoneAddingChildren()
{
return mIsDoneAddingChildren;
}
void
HTMLSharedObjectElement::DoneAddingChildren(bool aHaveNotified)
{
if (!mIsDoneAddingChildren) {
mIsDoneAddingChildren = true;
// If we're already in a document, we need to trigger the load
// Otherwise, BindToTree takes care of that.
if (IsInComposedDoc()) {
StartObjectLoad(aHaveNotified, false);
}
}
}
NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLSharedObjectElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLSharedObjectElement,
nsGenericHTMLElement)
nsObjectLoadingContent::Traverse(tmp, cb);
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_ADDREF_INHERITED(HTMLSharedObjectElement, Element)
NS_IMPL_RELEASE_INHERITED(HTMLSharedObjectElement, Element)
NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(HTMLSharedObjectElement)
NS_INTERFACE_TABLE_INHERITED(HTMLSharedObjectElement,
nsIRequestObserver,
nsIStreamListener,
nsIFrameLoaderOwner,
nsIObjectLoadingContent,
imgINotificationObserver,
nsIImageLoadingContent,
imgIOnloadBlocker,
nsIChannelEventSink)
NS_INTERFACE_TABLE_TO_MAP_SEGUE
NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLAppletElement, applet)
NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLEmbedElement, embed)
NS_INTERFACE_MAP_END_INHERITING(nsGenericHTMLElement)
NS_IMPL_ELEMENT_CLONE(HTMLSharedObjectElement)
#ifdef XP_MACOSX
NS_IMETHODIMP
HTMLSharedObjectElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
{
HTMLObjectElement::HandleFocusBlurPlugin(this, aVisitor.mEvent);
return NS_OK;
}
#endif // #ifdef XP_MACOSX
void
HTMLSharedObjectElement::AsyncEventRunning(AsyncEventDispatcher* aEvent)
{
nsImageLoadingContent::AsyncEventRunning(aEvent);
}
nsresult
HTMLSharedObjectElement::BindToTree(nsIDocument *aDocument,
nsIContent *aParent,
nsIContent *aBindingParent,
bool aCompileEventHandlers)
{
nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
aBindingParent,
aCompileEventHandlers);
NS_ENSURE_SUCCESS(rv, rv);
rv = nsObjectLoadingContent::BindToTree(aDocument, aParent,
aBindingParent,
aCompileEventHandlers);
NS_ENSURE_SUCCESS(rv, rv);
// Don't kick off load from being bound to a plugin document - the plugin
// document will call nsObjectLoadingContent::InitializeFromChannel() for the
// initial load.
nsCOMPtr<nsIPluginDocument> pluginDoc = do_QueryInterface(aDocument);
// If we already have all the children, start the load.
if (mIsDoneAddingChildren && !pluginDoc) {
void (HTMLSharedObjectElement::*start)() =
&HTMLSharedObjectElement::StartObjectLoad;
nsContentUtils::AddScriptRunner(NewRunnableMethod(this, start));
}
return NS_OK;
}
void
HTMLSharedObjectElement::UnbindFromTree(bool aDeep,
bool aNullParent)
{
#ifdef XP_MACOSX
// When a page is reloaded (when an nsIDocument's content is removed), the
// focused element isn't necessarily sent an eBlur event. See
// nsFocusManager::ContentRemoved(). This means that a widget may think it
// still contains a focused plugin when it doesn't -- which in turn can
// disable text input in the browser window. See bug 1137229.
HTMLObjectElement::OnFocusBlurPlugin(this, false);
#endif
nsObjectLoadingContent::UnbindFromTree(aDeep, aNullParent);
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
}
nsresult
HTMLSharedObjectElement::SetAttr(int32_t aNameSpaceID, nsIAtom *aName,
nsIAtom *aPrefix, const nsAString &aValue,
bool aNotify)
{
nsresult rv = nsGenericHTMLElement::SetAttr(aNameSpaceID, aName, aPrefix,
aValue, aNotify);
NS_ENSURE_SUCCESS(rv, rv);
// if aNotify is false, we are coming from the parser or some such place;
// we'll get bound after all the attributes have been set, so we'll do the
// object load from BindToTree/DoneAddingChildren.
// Skip the LoadObject call in that case.
// We also don't want to start loading the object when we're not yet in
// a document, just in case that the caller wants to set additional
// attributes before inserting the node into the document.
if (aNotify && IsInComposedDoc() && mIsDoneAddingChildren &&
aNameSpaceID == kNameSpaceID_None && aName == URIAttrName()
&& !BlockEmbedContentLoading()) {
return LoadObject(aNotify, true);
}
return NS_OK;
}
bool
HTMLSharedObjectElement::IsHTMLFocusable(bool aWithMouse,
bool *aIsFocusable,
int32_t *aTabIndex)
{
if (mNodeInfo->Equals(nsGkAtoms::embed) || Type() == eType_Plugin) {
// Has plugin content: let the plugin decide what to do in terms of
// internal focus from mouse clicks
if (aTabIndex) {
GetTabIndex(aTabIndex);
}
*aIsFocusable = true;
// Let the plugin decide, so override.
return true;
}
return nsGenericHTMLElement::IsHTMLFocusable(aWithMouse, aIsFocusable, aTabIndex);
}
nsIContent::IMEState
HTMLSharedObjectElement::GetDesiredIMEState()
{
if (Type() == eType_Plugin) {
return IMEState(IMEState::PLUGIN);
}
return nsGenericHTMLElement::GetDesiredIMEState();
}
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Align, align)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Alt, alt)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Archive, archive)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Code, code)
NS_IMPL_URI_ATTR(HTMLSharedObjectElement, CodeBase, codebase)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Height, height)
NS_IMPL_INT_ATTR(HTMLSharedObjectElement, Hspace, hspace)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Name, name)
NS_IMPL_URI_ATTR_WITH_BASE(HTMLSharedObjectElement, Object, object, codebase)
NS_IMPL_URI_ATTR(HTMLSharedObjectElement, Src, src)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Type, type)
NS_IMPL_INT_ATTR(HTMLSharedObjectElement, Vspace, vspace)
NS_IMPL_STRING_ATTR(HTMLSharedObjectElement, Width, width)
int32_t
HTMLSharedObjectElement::TabIndexDefault()
{
return -1;
}
bool
HTMLSharedObjectElement::ParseAttribute(int32_t aNamespaceID,
nsIAtom *aAttribute,
const nsAString &aValue,
nsAttrValue &aResult)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::align) {
return ParseAlignValue(aValue, aResult);
}
if (ParseImageAttribute(aAttribute, aValue, aResult)) {
return true;
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aResult);
}
static void
MapAttributesIntoRuleBase(const nsMappedAttributes *aAttributes,
nsRuleData *aData)
{
nsGenericHTMLElement::MapImageBorderAttributeInto(aAttributes, aData);
nsGenericHTMLElement::MapImageMarginAttributeInto(aAttributes, aData);
nsGenericHTMLElement::MapImageSizeAttributesInto(aAttributes, aData);
nsGenericHTMLElement::MapImageAlignAttributeInto(aAttributes, aData);
}
static void
MapAttributesIntoRuleExceptHidden(const nsMappedAttributes *aAttributes,
nsRuleData *aData)
{
MapAttributesIntoRuleBase(aAttributes, aData);
nsGenericHTMLElement::MapCommonAttributesIntoExceptHidden(aAttributes, aData);
}
void
HTMLSharedObjectElement::MapAttributesIntoRule(const nsMappedAttributes *aAttributes,
nsRuleData *aData)
{
MapAttributesIntoRuleBase(aAttributes, aData);
nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
}
NS_IMETHODIMP_(bool)
HTMLSharedObjectElement::IsAttributeMapped(const nsIAtom *aAttribute) const
{
static const MappedAttributeEntry* const map[] = {
sCommonAttributeMap,
sImageMarginSizeAttributeMap,
sImageBorderAttributeMap,
sImageAlignAttributeMap,
};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc
HTMLSharedObjectElement::GetAttributeMappingFunction() const
{
if (mNodeInfo->Equals(nsGkAtoms::embed)) {
return &MapAttributesIntoRuleExceptHidden;
}
return &MapAttributesIntoRule;
}
void
HTMLSharedObjectElement::StartObjectLoad(bool aNotify, bool aForceLoad)
{
// BindToTree can call us asynchronously, and we may be removed from the tree
// in the interim
if (!IsInComposedDoc() || !OwnerDoc()->IsActive() ||
BlockEmbedContentLoading()) {
return;
}
LoadObject(aNotify, aForceLoad);
SetIsNetworkCreated(false);
}
EventStates
HTMLSharedObjectElement::IntrinsicState() const
{
return nsGenericHTMLElement::IntrinsicState() | ObjectState();
}
uint32_t
HTMLSharedObjectElement::GetCapabilities() const
{
uint32_t capabilities = eSupportPlugins | eAllowPluginSkipChannel;
if (mNodeInfo->Equals(nsGkAtoms::embed)) {
capabilities |= eSupportImages | eSupportDocuments;
}
return capabilities;
}
void
HTMLSharedObjectElement::DestroyContent()
{
nsObjectLoadingContent::DestroyContent();
nsGenericHTMLElement::DestroyContent();
}
nsresult
HTMLSharedObjectElement::CopyInnerTo(Element* aDest)
{
nsresult rv = nsGenericHTMLElement::CopyInnerTo(aDest);
NS_ENSURE_SUCCESS(rv, rv);
if (aDest->OwnerDoc()->IsStaticDocument()) {
CreateStaticClone(static_cast<HTMLSharedObjectElement*>(aDest));
}
return rv;
}
JSObject*
HTMLSharedObjectElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
JSObject* obj;
if (mNodeInfo->Equals(nsGkAtoms::applet)) {
obj = HTMLAppletElementBinding::Wrap(aCx, this, aGivenProto);
} else {
MOZ_ASSERT(mNodeInfo->Equals(nsGkAtoms::embed));
obj = HTMLEmbedElementBinding::Wrap(aCx, this, aGivenProto);
}
if (!obj) {
return nullptr;
}
JS::Rooted<JSObject*> rootedObj(aCx, obj);
SetupProtoChain(aCx, rootedObj);
return rootedObj;
}
nsContentPolicyType
HTMLSharedObjectElement::GetContentPolicyType() const
{
if (mNodeInfo->Equals(nsGkAtoms::applet)) {
// We use TYPE_INTERNAL_OBJECT for applet too, since it is not exposed
// through RequestContext yet.
return nsIContentPolicy::TYPE_INTERNAL_OBJECT;
} else {
MOZ_ASSERT(mNodeInfo->Equals(nsGkAtoms::embed));
return nsIContentPolicy::TYPE_INTERNAL_EMBED;
}
}
bool
HTMLSharedObjectElement::BlockEmbedContentLoading()
{
// Only check on embed elements
if (!IsHTMLElement(nsGkAtoms::embed)) {
return false;
}
// Traverse up the node tree to see if we have any ancestors that may block us
// from loading
for (nsIContent* parent = GetParent(); parent; parent = parent->GetParent()) {
if (parent->IsAnyOfHTMLElements(nsGkAtoms::video, nsGkAtoms::audio)) {
return true;
}
// If we have an ancestor that is an object with a source, it'll have an
// associated displayed type. If that type is not null, don't load content
// for the embed.
if (HTMLObjectElement* object = HTMLObjectElement::FromContent(parent)) {
uint32_t type = object->DisplayedType();
if (type != eType_Null) {
return true;
}
}
}
return false;
}
} // namespace dom
} // namespace mozilla