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gecko-dev/docshell/base/nsDocShell.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: ft=cpp tw=78 sw=4 et ts=4 sts=4 cin
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla browser.
*
* The Initial Developer of the Original Code is
* Netscape Communications, Inc.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Pierre Phaneuf <pp@ludusdesign.com>
* Peter Annema <disttsc@bart.nl>
* Dan Rosen <dr@netscape.com>
* Mats Palmgren <mats.palmgren@bredband.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifdef MOZ_LOGGING
// so we can get logging even in release builds (but only for some things)
#define FORCE_PR_LOG 1
#endif
#include "nsIBrowserDOMWindow.h"
#include "nsIComponentManager.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDOMNSDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMStorage.h"
#include "nsPIDOMStorage.h"
#include "nsIDocumentViewer.h"
#include "nsIDocumentLoaderFactory.h"
#include "nsCURILoader.h"
#include "nsURILoader.h"
#include "nsDocShellCID.h"
#include "nsLayoutCID.h"
#include "nsDOMCID.h"
#include "nsIDOMScriptObjectFactory.h"
#include "nsNetUtil.h"
#include "nsRect.h"
#include "prprf.h"
#include "nsIMarkupDocumentViewer.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMChromeWindow.h"
#include "nsIDOMWindowInternal.h"
#include "nsIWebBrowserChrome.h"
#include "nsPoint.h"
#include "nsGfxCIID.h"
#include "nsIObserverService.h"
#include "nsIPrompt.h"
#include "nsIAuthPrompt.h"
#include "nsIAuthPrompt2.h"
#include "nsTextFormatter.h"
#include "nsIChannelEventSink.h"
#include "nsIUploadChannel.h"
#include "nsISecurityEventSink.h"
#include "nsIScriptSecurityManager.h"
#include "nsIJSContextStack.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsDocumentCharsetInfoCID.h"
#include "nsICanvasFrame.h"
#include "nsIScrollableFrame.h"
#include "nsContentPolicyUtils.h" // NS_CheckContentLoadPolicy(...)
#include "nsICategoryManager.h"
#include "nsXPCOMCID.h"
#include "nsISeekableStream.h"
#include "nsAutoPtr.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsIPrefBranch2.h"
#include "nsIWritablePropertyBag2.h"
#include "nsIAppShell.h"
#include "nsWidgetsCID.h"
#include "nsDOMJSUtils.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsIScrollableView.h"
#include "nsIScriptChannel.h"
#include "nsIURIClassifier.h"
// we want to explore making the document own the load group
// so we can associate the document URI with the load group.
// until this point, we have an evil hack:
#include "nsIHttpChannelInternal.h"
// Local Includes
#include "nsDocShell.h"
#include "nsDocShellLoadInfo.h"
#include "nsCDefaultURIFixup.h"
#include "nsDocShellEnumerator.h"
#include "nsSHistory.h"
// Helper Classes
#include "nsDOMError.h"
#include "nsEscape.h"
// Interfaces Needed
#include "nsIUploadChannel.h"
#include "nsIProgressEventSink.h"
#include "nsIWebProgress.h"
#include "nsILayoutHistoryState.h"
#include "nsITimer.h"
#include "nsISHistoryInternal.h"
#include "nsIPrincipal.h"
#include "nsIHistoryEntry.h"
#include "nsISHistoryListener.h"
#include "nsIWindowWatcher.h"
#include "nsIPromptFactory.h"
#include "nsIObserver.h"
#include "nsINestedURI.h"
#include "nsITransportSecurityInfo.h"
#include "nsINSSErrorsService.h"
// Editor-related
#include "nsIEditingSession.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMDocument.h"
#include "nsICachingChannel.h"
#include "nsICacheVisitor.h"
#include "nsICacheEntryDescriptor.h"
#include "nsIMultiPartChannel.h"
#include "nsIWyciwygChannel.h"
// The following are for bug #13871: Prevent frameset spoofing
#include "nsIHTMLDocument.h"
// For reporting errors with the console service.
// These can go away if error reporting is propagated up past nsDocShell.
#include "nsIConsoleService.h"
#include "nsIScriptError.h"
// used to dispatch urls to default protocol handlers
#include "nsCExternalHandlerService.h"
#include "nsIExternalProtocolService.h"
#include "nsIFocusController.h"
#include "nsITextToSubURI.h"
#include "nsIJARChannel.h"
#include "prlog.h"
#include "prmem.h"
#include "nsISelectionDisplay.h"
#include "nsIGlobalHistory2.h"
#include "nsIGlobalHistory3.h"
#ifdef DEBUG_DOCSHELL_FOCUS
#include "nsIEventStateManager.h"
#endif
#include "nsIFrame.h"
// for embedding
#include "nsIWebBrowserChromeFocus.h"
#include "nsPluginError.h"
static NS_DEFINE_IID(kDeviceContextCID, NS_DEVICE_CONTEXT_CID);
static NS_DEFINE_CID(kDOMScriptObjectFactoryCID,
NS_DOM_SCRIPT_OBJECT_FACTORY_CID);
static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
#if defined(DEBUG_bryner) || defined(DEBUG_chb)
//#define DEBUG_DOCSHELL_FOCUS
#define DEBUG_PAGE_CACHE
#endif
#include "nsContentErrors.h"
// Number of documents currently loading
static PRInt32 gNumberOfDocumentsLoading = 0;
// Global count of existing docshells.
static PRInt32 gDocShellCount = 0;
// Global reference to the URI fixup service.
nsIURIFixup *nsDocShell::sURIFixup = 0;
// True means we validate window targets to prevent frameset
// spoofing. Initialize this to a non-bolean value so we know to check
// the pref on the creation of the first docshell.
static PRBool gValidateOrigin = (PRBool)0xffffffff;
// Hint for native dispatch of events on how long to delay after
// all documents have loaded in milliseconds before favoring normal
// native event dispatch priorites over performance
#define NS_EVENT_STARVATION_DELAY_HINT 2000
// This is needed for displaying an error message
// when navigation is attempted on a document when printing
// The value arbitrary as long as it doesn't conflict with
// any of the other values in the errors in DisplayLoadError
#define NS_ERROR_DOCUMENT_IS_PRINTMODE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_GENERAL,2001)
#ifdef PR_LOGGING
#ifdef DEBUG
static PRLogModuleInfo* gDocShellLog;
#endif
static PRLogModuleInfo* gDocShellLeakLog;
#endif
const char kBrandBundleURL[] = "chrome://branding/locale/brand.properties";
const char kAppstringsBundleURL[] = "chrome://global/locale/appstrings.properties";
static void
FavorPerformanceHint(PRBool perfOverStarvation, PRUint32 starvationDelay)
{
nsCOMPtr<nsIAppShell> appShell = do_GetService(kAppShellCID);
if (appShell)
appShell->FavorPerformanceHint(perfOverStarvation, starvationDelay);
}
//*****************************************************************************
//*** nsDocShellFocusController
//*****************************************************************************
class nsDocShellFocusController
{
public:
static nsDocShellFocusController* GetInstance() { return &mDocShellFocusControllerSingleton; }
virtual ~nsDocShellFocusController(){}
void Focus(nsIDocShell* aDS);
void ClosingDown(nsIDocShell* aDS);
protected:
nsDocShellFocusController(){}
nsIDocShell* mFocusedDocShell; // very weak reference
private:
static nsDocShellFocusController mDocShellFocusControllerSingleton;
};
nsDocShellFocusController nsDocShellFocusController::mDocShellFocusControllerSingleton;
//*****************************************************************************
//*** nsDocShell: Object Management
//*****************************************************************************
nsDocShell::nsDocShell():
nsDocLoader(),
mAllowSubframes(PR_TRUE),
mAllowPlugins(PR_TRUE),
mAllowJavascript(PR_TRUE),
mAllowMetaRedirects(PR_TRUE),
mAllowImages(PR_TRUE),
mFocusDocFirst(PR_FALSE),
mHasFocus(PR_FALSE),
mCreatingDocument(PR_FALSE),
mUseErrorPages(PR_FALSE),
mObserveErrorPages(PR_TRUE),
mAllowAuth(PR_TRUE),
mAllowKeywordFixup(PR_FALSE),
mFiredUnloadEvent(PR_FALSE),
mEODForCurrentDocument(PR_FALSE),
mURIResultedInDocument(PR_FALSE),
mIsBeingDestroyed(PR_FALSE),
mIsExecutingOnLoadHandler(PR_FALSE),
mIsPrintingOrPP(PR_FALSE),
mSavingOldViewer(PR_FALSE),
mAppType(nsIDocShell::APP_TYPE_UNKNOWN),
mChildOffset(0),
mBusyFlags(BUSY_FLAGS_NONE),
mMarginWidth(0),
mMarginHeight(0),
mItemType(typeContent),
mDefaultScrollbarPref(Scrollbar_Auto, Scrollbar_Auto),
mPreviousTransIndex(-1),
mLoadedTransIndex(-1),
mEditorData(nsnull),
mTreeOwner(nsnull),
mChromeEventHandler(nsnull)
#ifdef DEBUG
, mInEnsureScriptEnv(PR_FALSE)
#endif
{
if (gDocShellCount++ == 0) {
NS_ASSERTION(sURIFixup == nsnull,
"Huh, sURIFixup not null in first nsDocShell ctor!");
CallGetService(NS_URIFIXUP_CONTRACTID, &sURIFixup);
}
#ifdef PR_LOGGING
#ifdef DEBUG
if (! gDocShellLog)
gDocShellLog = PR_NewLogModule("nsDocShell");
#endif
if (nsnull == gDocShellLeakLog)
gDocShellLeakLog = PR_NewLogModule("nsDocShellLeak");
if (gDocShellLeakLog)
PR_LOG(gDocShellLeakLog, PR_LOG_DEBUG, ("DOCSHELL %p created\n", this));
#endif
}
nsDocShell::~nsDocShell()
{
nsDocShellFocusController* dsfc = nsDocShellFocusController::GetInstance();
if (dsfc) {
dsfc->ClosingDown(this);
}
Destroy();
if (--gDocShellCount == 0) {
NS_IF_RELEASE(sURIFixup);
}
#ifdef PR_LOGGING
if (gDocShellLeakLog)
PR_LOG(gDocShellLeakLog, PR_LOG_DEBUG, ("DOCSHELL %p destroyed\n", this));
#endif
}
nsresult
nsDocShell::Init()
{
nsresult rv = nsDocLoader::Init();
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(mLoadGroup, "Something went wrong!");
mContentListener = new nsDSURIContentListener(this);
NS_ENSURE_TRUE(mContentListener, NS_ERROR_OUT_OF_MEMORY);
rv = mContentListener->Init();
NS_ENSURE_SUCCESS(rv, rv);
if (!mStorages.Init())
return NS_ERROR_OUT_OF_MEMORY;
// We want to hold a strong ref to the loadgroup, so it better hold a weak
// ref to us... use an InterfaceRequestorProxy to do this.
nsCOMPtr<InterfaceRequestorProxy> proxy =
new InterfaceRequestorProxy(static_cast<nsIInterfaceRequestor*>
(this));
NS_ENSURE_TRUE(proxy, NS_ERROR_OUT_OF_MEMORY);
mLoadGroup->SetNotificationCallbacks(proxy);
rv = nsDocLoader::AddDocLoaderAsChildOfRoot(this);
NS_ENSURE_SUCCESS(rv, rv);
// Add as |this| a progress listener to itself. A little weird, but
// simpler than reproducing all the listener-notification logic in
// overrides of the various methods via which nsDocLoader can be
// notified. Note that this holds an nsWeakPtr to ourselves, so it's ok.
return AddProgressListener(this, nsIWebProgress::NOTIFY_STATE_DOCUMENT |
nsIWebProgress::NOTIFY_STATE_NETWORK);
}
void
nsDocShell::DestroyChildren()
{
nsCOMPtr<nsIDocShellTreeItem> shell;
PRInt32 n = mChildList.Count();
for (PRInt32 i = 0; i < n; i++) {
shell = do_QueryInterface(ChildAt(i));
NS_ASSERTION(shell, "docshell has null child");
if (shell) {
shell->SetTreeOwner(nsnull);
}
}
nsDocLoader::DestroyChildren();
}
//*****************************************************************************
// nsDocShell::nsISupports
//*****************************************************************************
NS_IMPL_ADDREF_INHERITED(nsDocShell, nsDocLoader)
NS_IMPL_RELEASE_INHERITED(nsDocShell, nsDocLoader)
NS_INTERFACE_MAP_BEGIN(nsDocShell)
NS_INTERFACE_MAP_ENTRY(nsIDocShell)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeItem)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeNode)
NS_INTERFACE_MAP_ENTRY(nsIDocShellHistory)
NS_INTERFACE_MAP_ENTRY(nsIWebNavigation)
NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
NS_INTERFACE_MAP_ENTRY(nsIScrollable)
NS_INTERFACE_MAP_ENTRY(nsITextScroll)
NS_INTERFACE_MAP_ENTRY(nsIDocCharset)
NS_INTERFACE_MAP_ENTRY(nsIScriptGlobalObjectOwner)
NS_INTERFACE_MAP_ENTRY(nsIRefreshURI)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_ENTRY(nsIContentViewerContainer)
NS_INTERFACE_MAP_ENTRY(nsIEditorDocShell)
NS_INTERFACE_MAP_ENTRY(nsIWebPageDescriptor)
NS_INTERFACE_MAP_ENTRY(nsIAuthPromptProvider)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_END_INHERITING(nsDocLoader)
///*****************************************************************************
// nsDocShell::nsIInterfaceRequestor
//*****************************************************************************
NS_IMETHODIMP nsDocShell::GetInterface(const nsIID & aIID, void **aSink)
{
NS_PRECONDITION(aSink, "null out param");
*aSink = nsnull;
if (aIID.Equals(NS_GET_IID(nsIURIContentListener))) {
*aSink = mContentListener;
}
else if (aIID.Equals(NS_GET_IID(nsIScriptGlobalObject)) &&
NS_SUCCEEDED(EnsureScriptEnvironment())) {
*aSink = mScriptGlobal;
}
else if ((aIID.Equals(NS_GET_IID(nsIDOMWindowInternal)) ||
aIID.Equals(NS_GET_IID(nsPIDOMWindow)) ||
aIID.Equals(NS_GET_IID(nsIDOMWindow))) &&
NS_SUCCEEDED(EnsureScriptEnvironment())) {
return mScriptGlobal->QueryInterface(aIID, aSink);
}
else if (aIID.Equals(NS_GET_IID(nsIDOMDocument)) &&
NS_SUCCEEDED(EnsureContentViewer())) {
mContentViewer->GetDOMDocument((nsIDOMDocument **) aSink);
return *aSink ? NS_OK : NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsIPrompt)) &&
NS_SUCCEEDED(EnsureScriptEnvironment())) {
nsresult rv;
nsCOMPtr<nsIWindowWatcher> wwatch =
do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMWindow> window(do_QueryInterface(mScriptGlobal));
// Get the an auth prompter for our window so that the parenting
// of the dialogs works as it should when using tabs.
nsIPrompt *prompt;
rv = wwatch->GetNewPrompter(window, &prompt);
NS_ENSURE_SUCCESS(rv, rv);
*aSink = prompt;
return NS_OK;
}
else if (aIID.Equals(NS_GET_IID(nsIAuthPrompt)) ||
aIID.Equals(NS_GET_IID(nsIAuthPrompt2))) {
return NS_SUCCEEDED(
GetAuthPrompt(PROMPT_NORMAL, aIID, aSink)) ?
NS_OK : NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsISHistory))) {
nsCOMPtr<nsISHistory> shistory;
nsresult
rv =
GetSessionHistory(getter_AddRefs(shistory));
if (NS_SUCCEEDED(rv) && shistory) {
*aSink = shistory;
NS_ADDREF((nsISupports *) * aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsIWebBrowserFind))) {
nsresult rv = EnsureFind();
if (NS_FAILED(rv)) return rv;
*aSink = mFind;
NS_ADDREF((nsISupports*)*aSink);
return NS_OK;
}
else if (aIID.Equals(NS_GET_IID(nsIEditingSession)) && NS_SUCCEEDED(EnsureEditorData())) {
nsCOMPtr<nsIEditingSession> editingSession;
mEditorData->GetEditingSession(getter_AddRefs(editingSession));
if (editingSession)
{
*aSink = editingSession;
NS_ADDREF((nsISupports *)*aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
else if (aIID.Equals(NS_GET_IID(nsIClipboardDragDropHookList))
&& NS_SUCCEEDED(EnsureTransferableHookData())) {
*aSink = mTransferableHookData;
NS_ADDREF((nsISupports *)*aSink);
return NS_OK;
}
else if (aIID.Equals(NS_GET_IID(nsISelectionDisplay))) {
nsCOMPtr<nsIPresShell> shell;
nsresult rv = GetPresShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell)
return shell->QueryInterface(aIID,aSink);
}
else if (aIID.Equals(NS_GET_IID(nsIDocShellTreeOwner))) {
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
nsresult rv = GetTreeOwner(getter_AddRefs(treeOwner));
if (NS_SUCCEEDED(rv) && treeOwner)
return treeOwner->QueryInterface(aIID, aSink);
}
else {
return nsDocLoader::GetInterface(aIID, aSink);
}
NS_IF_ADDREF(((nsISupports *) * aSink));
return *aSink ? NS_OK : NS_NOINTERFACE;
}
PRUint32
nsDocShell::
ConvertDocShellLoadInfoToLoadType(nsDocShellInfoLoadType aDocShellLoadType)
{
PRUint32 loadType = LOAD_NORMAL;
switch (aDocShellLoadType) {
case nsIDocShellLoadInfo::loadNormal:
loadType = LOAD_NORMAL;
break;
case nsIDocShellLoadInfo::loadNormalReplace:
loadType = LOAD_NORMAL_REPLACE;
break;
case nsIDocShellLoadInfo::loadNormalExternal:
loadType = LOAD_NORMAL_EXTERNAL;
break;
case nsIDocShellLoadInfo::loadHistory:
loadType = LOAD_HISTORY;
break;
case nsIDocShellLoadInfo::loadNormalBypassCache:
loadType = LOAD_NORMAL_BYPASS_CACHE;
break;
case nsIDocShellLoadInfo::loadNormalBypassProxy:
loadType = LOAD_NORMAL_BYPASS_PROXY;
break;
case nsIDocShellLoadInfo::loadNormalBypassProxyAndCache:
loadType = LOAD_NORMAL_BYPASS_PROXY_AND_CACHE;
break;
case nsIDocShellLoadInfo::loadReloadNormal:
loadType = LOAD_RELOAD_NORMAL;
break;
case nsIDocShellLoadInfo::loadReloadCharsetChange:
loadType = LOAD_RELOAD_CHARSET_CHANGE;
break;
case nsIDocShellLoadInfo::loadReloadBypassCache:
loadType = LOAD_RELOAD_BYPASS_CACHE;
break;
case nsIDocShellLoadInfo::loadReloadBypassProxy:
loadType = LOAD_RELOAD_BYPASS_PROXY;
break;
case nsIDocShellLoadInfo::loadReloadBypassProxyAndCache:
loadType = LOAD_RELOAD_BYPASS_PROXY_AND_CACHE;
break;
case nsIDocShellLoadInfo::loadLink:
loadType = LOAD_LINK;
break;
case nsIDocShellLoadInfo::loadRefresh:
loadType = LOAD_REFRESH;
break;
case nsIDocShellLoadInfo::loadBypassHistory:
loadType = LOAD_BYPASS_HISTORY;
break;
case nsIDocShellLoadInfo::loadStopContent:
loadType = LOAD_STOP_CONTENT;
break;
case nsIDocShellLoadInfo::loadStopContentAndReplace:
loadType = LOAD_STOP_CONTENT_AND_REPLACE;
break;
default:
NS_NOTREACHED("Unexpected nsDocShellInfoLoadType value");
}
return loadType;
}
nsDocShellInfoLoadType
nsDocShell::ConvertLoadTypeToDocShellLoadInfo(PRUint32 aLoadType)
{
nsDocShellInfoLoadType docShellLoadType = nsIDocShellLoadInfo::loadNormal;
switch (aLoadType) {
case LOAD_NORMAL:
docShellLoadType = nsIDocShellLoadInfo::loadNormal;
break;
case LOAD_NORMAL_REPLACE:
docShellLoadType = nsIDocShellLoadInfo::loadNormalReplace;
break;
case LOAD_NORMAL_EXTERNAL:
docShellLoadType = nsIDocShellLoadInfo::loadNormalExternal;
break;
case LOAD_NORMAL_BYPASS_CACHE:
docShellLoadType = nsIDocShellLoadInfo::loadNormalBypassCache;
break;
case LOAD_NORMAL_BYPASS_PROXY:
docShellLoadType = nsIDocShellLoadInfo::loadNormalBypassProxy;
break;
case LOAD_NORMAL_BYPASS_PROXY_AND_CACHE:
docShellLoadType = nsIDocShellLoadInfo::loadNormalBypassProxyAndCache;
break;
case LOAD_HISTORY:
docShellLoadType = nsIDocShellLoadInfo::loadHistory;
break;
case LOAD_RELOAD_NORMAL:
docShellLoadType = nsIDocShellLoadInfo::loadReloadNormal;
break;
case LOAD_RELOAD_CHARSET_CHANGE:
docShellLoadType = nsIDocShellLoadInfo::loadReloadCharsetChange;
break;
case LOAD_RELOAD_BYPASS_CACHE:
docShellLoadType = nsIDocShellLoadInfo::loadReloadBypassCache;
break;
case LOAD_RELOAD_BYPASS_PROXY:
docShellLoadType = nsIDocShellLoadInfo::loadReloadBypassProxy;
break;
case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
docShellLoadType = nsIDocShellLoadInfo::loadReloadBypassProxyAndCache;
break;
case LOAD_LINK:
docShellLoadType = nsIDocShellLoadInfo::loadLink;
break;
case LOAD_REFRESH:
docShellLoadType = nsIDocShellLoadInfo::loadRefresh;
break;
case LOAD_BYPASS_HISTORY:
case LOAD_ERROR_PAGE:
docShellLoadType = nsIDocShellLoadInfo::loadBypassHistory;
break;
case LOAD_STOP_CONTENT:
docShellLoadType = nsIDocShellLoadInfo::loadStopContent;
break;
case LOAD_STOP_CONTENT_AND_REPLACE:
docShellLoadType = nsIDocShellLoadInfo::loadStopContentAndReplace;
break;
default:
NS_NOTREACHED("Unexpected load type value");
}
return docShellLoadType;
}
//*****************************************************************************
// nsDocShell::nsIDocShell
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::LoadURI(nsIURI * aURI,
nsIDocShellLoadInfo * aLoadInfo,
PRUint32 aLoadFlags,
PRBool aFirstParty)
{
// Note: we allow loads to get through here even if mFiredUnloadEvent is
// true; that case will get handled in LoadInternal or LoadHistoryEntry.
if (IsPrintingOrPP()) {
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
nsCOMPtr<nsIURI> referrer;
nsCOMPtr<nsIInputStream> postStream;
nsCOMPtr<nsIInputStream> headersStream;
nsCOMPtr<nsISupports> owner;
PRBool inheritOwner = PR_FALSE;
PRBool sendReferrer = PR_TRUE;
nsCOMPtr<nsISHEntry> shEntry;
nsXPIDLString target;
PRUint32 loadType = MAKE_LOAD_TYPE(LOAD_NORMAL, aLoadFlags);
NS_ENSURE_ARG(aURI);
// Extract the info from the DocShellLoadInfo struct...
if (aLoadInfo) {
aLoadInfo->GetReferrer(getter_AddRefs(referrer));
nsDocShellInfoLoadType lt = nsIDocShellLoadInfo::loadNormal;
aLoadInfo->GetLoadType(&lt);
// Get the appropriate loadType from nsIDocShellLoadInfo type
loadType = ConvertDocShellLoadInfoToLoadType(lt);
aLoadInfo->GetOwner(getter_AddRefs(owner));
aLoadInfo->GetInheritOwner(&inheritOwner);
aLoadInfo->GetSHEntry(getter_AddRefs(shEntry));
aLoadInfo->GetTarget(getter_Copies(target));
aLoadInfo->GetPostDataStream(getter_AddRefs(postStream));
aLoadInfo->GetHeadersStream(getter_AddRefs(headersStream));
aLoadInfo->GetSendReferrer(&sendReferrer);
}
#if defined(PR_LOGGING) && defined(DEBUG)
if (PR_LOG_TEST(gDocShellLog, PR_LOG_DEBUG)) {
nsCAutoString uristr;
aURI->GetAsciiSpec(uristr);
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]: loading %s with flags 0x%08x",
this, uristr.get(), aLoadFlags));
}
#endif
if (!shEntry &&
!LOAD_TYPE_HAS_FLAGS(loadType, LOAD_FLAGS_REPLACE_HISTORY)) {
// First verify if this is a subframe.
nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
GetSameTypeParent(getter_AddRefs(parentAsItem));
nsCOMPtr<nsIDocShell> parentDS(do_QueryInterface(parentAsItem));
PRUint32 parentLoadType;
if (parentDS && parentDS != static_cast<nsIDocShell *>(this)) {
/* OK. It is a subframe. Checkout the
* parent's loadtype. If the parent was loaded thro' a history
* mechanism, then get the SH entry for the child from the parent.
* This is done to restore frameset navigation while going back/forward.
* If the parent was loaded through any other loadType, set the
* child's loadType too accordingly, so that session history does not
* get confused.
*/
// Get the parent's load type
parentDS->GetLoadType(&parentLoadType);
nsCOMPtr<nsIDocShellHistory> parent(do_QueryInterface(parentAsItem));
if (parent) {
// Get the ShEntry for the child from the parent
parent->GetChildSHEntry(mChildOffset, getter_AddRefs(shEntry));
// Make some decisions on the child frame's loadType based on the
// parent's loadType.
if (mCurrentURI == nsnull) {
// This is a newly created frame. Check for exception cases first.
// By default the subframe will inherit the parent's loadType.
if (shEntry && (parentLoadType == LOAD_NORMAL ||
parentLoadType == LOAD_LINK ||
parentLoadType == LOAD_NORMAL_EXTERNAL)) {
// The parent was loaded normally. In this case, this *brand new* child really shouldn't
// have a SHEntry. If it does, it could be because the parent is replacing an
// existing frame with a new frame, in the onLoadHandler. We don't want this
// url to get into session history. Clear off shEntry, and set laod type to
// LOAD_BYPASS_HISTORY.
PRBool inOnLoadHandler=PR_FALSE;
parentDS->GetIsExecutingOnLoadHandler(&inOnLoadHandler);
if (inOnLoadHandler) {
loadType = LOAD_NORMAL_REPLACE;
shEntry = nsnull;
}
}
else if (parentLoadType == LOAD_REFRESH) {
// Clear shEntry. For refresh loads, we have to load
// what comes thro' the pipe, not what's in history.
shEntry = nsnull;
}
else if ((parentLoadType == LOAD_BYPASS_HISTORY) ||
(parentLoadType == LOAD_ERROR_PAGE) ||
(shEntry &&
((parentLoadType & LOAD_CMD_HISTORY) ||
(parentLoadType == LOAD_RELOAD_NORMAL) ||
(parentLoadType == LOAD_RELOAD_CHARSET_CHANGE)))) {
// If the parent url, bypassed history or was loaded from
// history, pass on the parent's loadType to the new child
// frame too, so that the child frame will also
// avoid getting into history.
loadType = parentLoadType;
}
}
else {
// This is a pre-existing subframe. If the load was not originally initiated
// by session history, (if (!shEntry) condition succeeded) and mCurrentURI is not null,
// it is possible that a parent's onLoadHandler or even self's onLoadHandler is loading
// a new page in this child. Check parent's and self's busy flag and if it is set,
// we don't want this onLoadHandler load to get in to session history.
PRUint32 parentBusy = BUSY_FLAGS_NONE;
PRUint32 selfBusy = BUSY_FLAGS_NONE;
parentDS->GetBusyFlags(&parentBusy);
GetBusyFlags(&selfBusy);
if (((parentBusy & BUSY_FLAGS_BUSY) ||
(selfBusy & BUSY_FLAGS_BUSY)) &&
shEntry) {
loadType = LOAD_NORMAL_REPLACE;
shEntry = nsnull;
}
}
} // parent
} //parentDS
else {
// This is the root docshell. If we got here while
// executing an onLoad Handler,this load will not go
// into session history.
PRBool inOnLoadHandler=PR_FALSE;
GetIsExecutingOnLoadHandler(&inOnLoadHandler);
if (inOnLoadHandler) {
loadType = LOAD_NORMAL_REPLACE;
}
}
} // !shEntry
if (shEntry) {
#ifdef DEBUG
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]: loading from session history", this));
#endif
rv = LoadHistoryEntry(shEntry, loadType);
}
// Perform the load...
else {
// We need an owner (a referring principal). 4 possibilities:
// (1) If the system principal was passed in and we're a typeContent
// docshell, inherit the principal from the current document
// instead.
// (2) In all other cases when the principal passed in is not null,
// use that principal.
// (3) If the caller has allowed inheriting from the current document,
// or if we're being called from system code (eg chrome JS or pure
// C++) then inheritOwner should be true and InternalLoad will get
// an owner from the current document. If none of these things are
// true, then
// (4) we pass a null owner into the channel, and an owner will be
// created later from the channel's internal data.
//
// NOTE: This all only works because the only thing the owner is used
// for in InternalLoad is data:, javascript:, and about:blank
// URIs. For other URIs this would all be dead wrong!
nsCOMPtr<nsIScriptSecurityManager> secMan =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
if (owner && mItemType != typeChrome) {
nsCOMPtr<nsIPrincipal> ownerPrincipal = do_QueryInterface(owner);
PRBool isSystem;
rv = secMan->IsSystemPrincipal(ownerPrincipal, &isSystem);
NS_ENSURE_SUCCESS(rv, rv);
if (isSystem) {
owner = nsnull;
inheritOwner = PR_TRUE;
}
}
if (!owner && !inheritOwner) {
// See if there's system or chrome JS code running
rv = secMan->SubjectPrincipalIsSystem(&inheritOwner);
if (NS_FAILED(rv)) {
// Set it back to false
inheritOwner = PR_FALSE;
}
}
PRUint32 flags = 0;
if (inheritOwner)
flags |= INTERNAL_LOAD_FLAGS_INHERIT_OWNER;
if (!sendReferrer)
flags |= INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER;
if (aLoadFlags & LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP)
flags |= INTERNAL_LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
if (aLoadFlags & LOAD_FLAGS_FIRST_LOAD)
flags |= INTERNAL_LOAD_FLAGS_FIRST_LOAD;
if (aLoadFlags & LOAD_FLAGS_BYPASS_CLASSIFIER)
flags |= INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER;
rv = InternalLoad(aURI,
referrer,
owner,
flags,
target.get(),
nsnull, // No type hint
postStream,
headersStream,
loadType,
nsnull, // No SHEntry
aFirstParty,
nsnull, // No nsIDocShell
nsnull); // No nsIRequest
}
return rv;
}
NS_IMETHODIMP
nsDocShell::LoadStream(nsIInputStream *aStream, nsIURI * aURI,
const nsACString &aContentType,
const nsACString &aContentCharset,
nsIDocShellLoadInfo * aLoadInfo)
{
NS_ENSURE_ARG(aStream);
mAllowKeywordFixup = PR_FALSE;
// if the caller doesn't pass in a URI we need to create a dummy URI. necko
// currently requires a URI in various places during the load. Some consumers
// do as well.
nsCOMPtr<nsIURI> uri = aURI;
if (!uri) {
// HACK ALERT
nsresult rv = NS_OK;
uri = do_CreateInstance(NS_SIMPLEURI_CONTRACTID, &rv);
if (NS_FAILED(rv))
return rv;
// Make sure that the URI spec "looks" like a protocol and path...
// For now, just use a bogus protocol called "internal"
rv = uri->SetSpec(NS_LITERAL_CSTRING("internal:load-stream"));
if (NS_FAILED(rv))
return rv;
}
PRUint32 loadType = LOAD_NORMAL;
if (aLoadInfo) {
nsDocShellInfoLoadType lt = nsIDocShellLoadInfo::loadNormal;
(void) aLoadInfo->GetLoadType(&lt);
// Get the appropriate LoadType from nsIDocShellLoadInfo type
loadType = ConvertDocShellLoadInfoToLoadType(lt);
}
NS_ENSURE_SUCCESS(Stop(nsIWebNavigation::STOP_NETWORK), NS_ERROR_FAILURE);
mLoadType = loadType;
// build up a channel for this stream.
nsCOMPtr<nsIChannel> channel;
NS_ENSURE_SUCCESS(NS_NewInputStreamChannel
(getter_AddRefs(channel), uri, aStream,
aContentType, aContentCharset),
NS_ERROR_FAILURE);
nsCOMPtr<nsIURILoader>
uriLoader(do_GetService(NS_URI_LOADER_CONTRACTID));
NS_ENSURE_TRUE(uriLoader, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(DoChannelLoad(channel, uriLoader, PR_FALSE),
NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::CreateLoadInfo(nsIDocShellLoadInfo ** aLoadInfo)
{
nsDocShellLoadInfo *loadInfo = new nsDocShellLoadInfo();
NS_ENSURE_TRUE(loadInfo, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<nsIDocShellLoadInfo> localRef(loadInfo);
*aLoadInfo = localRef;
NS_ADDREF(*aLoadInfo);
return NS_OK;
}
/*
* Reset state to a new content model within the current document and the document
* viewer. Called by the document before initiating an out of band document.write().
*/
NS_IMETHODIMP
nsDocShell::PrepareForNewContentModel()
{
mEODForCurrentDocument = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::FirePageHideNotification(PRBool aIsUnload)
{
if (mContentViewer && !mFiredUnloadEvent) {
// Keep an explicit reference since calling PageHide could release
// mContentViewer
nsCOMPtr<nsIContentViewer> kungFuDeathGrip(mContentViewer);
mFiredUnloadEvent = PR_TRUE;
mContentViewer->PageHide(aIsUnload);
nsAutoTArray<nsCOMPtr<nsIDocShell>, 8> kids;
PRInt32 i, n = mChildList.Count();
kids.SetCapacity(n);
for (i = 0; i < n; i++) {
kids.AppendElement(do_QueryInterface(ChildAt(i)));
}
n = kids.Length();
for (i = 0; i < n; ++i) {
if (kids[i]) {
kids[i]->FirePageHideNotification(aIsUnload);
}
}
}
// Now make sure our editor, if any, is torn down before we go
// any farther.
if (mEditorData && aIsUnload) {
mEditorData->TearDownEditor();
}
return NS_OK;
}
//
// Bug 13871: Prevent frameset spoofing
//
// This routine answers: 'Is origin's document from same domain as
// target's document?'
//
/* static */
PRBool
nsDocShell::ValidateOrigin(nsIDocShellTreeItem* aOriginTreeItem,
nsIDocShellTreeItem* aTargetTreeItem)
{
nsCOMPtr<nsIScriptSecurityManager> securityManager =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
NS_ENSURE_TRUE(securityManager, PR_FALSE);
nsCOMPtr<nsIPrincipal> subjectPrincipal;
nsresult rv =
securityManager->GetSubjectPrincipal(getter_AddRefs(subjectPrincipal));
NS_ENSURE_SUCCESS(rv, PR_FALSE);
if (subjectPrincipal) {
// We're called from JS, check if UniversalBrowserWrite is
// enabled.
PRBool ubwEnabled = PR_FALSE;
rv = securityManager->IsCapabilityEnabled("UniversalBrowserWrite",
&ubwEnabled);
NS_ENSURE_SUCCESS(rv, PR_FALSE);
if (ubwEnabled) {
return PR_TRUE;
}
}
// Get origin document principal
nsCOMPtr<nsIDOMDocument> originDOMDocument =
do_GetInterface(aOriginTreeItem);
nsCOMPtr<nsIDocument> originDocument(do_QueryInterface(originDOMDocument));
NS_ENSURE_TRUE(originDocument, PR_FALSE);
// Get target principal
nsCOMPtr<nsIDOMDocument> targetDOMDocument =
do_GetInterface(aTargetTreeItem);
nsCOMPtr<nsIDocument> targetDocument(do_QueryInterface(targetDOMDocument));
NS_ENSURE_TRUE(targetDocument, PR_FALSE);
PRBool equal;
return
NS_SUCCEEDED(originDocument->NodePrincipal()->
Equals(targetDocument->NodePrincipal(), &equal)) &&
equal;
}
NS_IMETHODIMP
nsDocShell::GetEldestPresContext(nsPresContext** aPresContext)
{
nsresult rv = NS_OK;
NS_ENSURE_ARG_POINTER(aPresContext);
*aPresContext = nsnull;
nsCOMPtr<nsIContentViewer> viewer = mContentViewer;
while (viewer) {
nsCOMPtr<nsIContentViewer> prevViewer;
viewer->GetPreviousViewer(getter_AddRefs(prevViewer));
if (prevViewer)
viewer = prevViewer;
else {
nsCOMPtr<nsIDocumentViewer> docv(do_QueryInterface(viewer));
if (docv)
rv = docv->GetPresContext(aPresContext);
break;
}
}
return rv;
}
NS_IMETHODIMP
nsDocShell::GetPresContext(nsPresContext ** aPresContext)
{
NS_ENSURE_ARG_POINTER(aPresContext);
*aPresContext = nsnull;
if (!mContentViewer)
return NS_OK;
nsCOMPtr<nsIDocumentViewer> docv(do_QueryInterface(mContentViewer));
NS_ENSURE_TRUE(docv, NS_ERROR_NO_INTERFACE);
return docv->GetPresContext(aPresContext);
}
NS_IMETHODIMP
nsDocShell::GetPresShell(nsIPresShell ** aPresShell)
{
nsresult rv = NS_OK;
NS_ENSURE_ARG_POINTER(aPresShell);
*aPresShell = nsnull;
nsCOMPtr<nsPresContext> presContext;
(void) GetPresContext(getter_AddRefs(presContext));
if (presContext) {
NS_IF_ADDREF(*aPresShell = presContext->GetPresShell());
}
return rv;
}
NS_IMETHODIMP
nsDocShell::GetEldestPresShell(nsIPresShell** aPresShell)
{
nsresult rv = NS_OK;
NS_ENSURE_ARG_POINTER(aPresShell);
*aPresShell = nsnull;
nsCOMPtr<nsPresContext> presContext;
(void) GetEldestPresContext(getter_AddRefs(presContext));
if (presContext) {
NS_IF_ADDREF(*aPresShell = presContext->GetPresShell());
}
return rv;
}
NS_IMETHODIMP
nsDocShell::GetContentViewer(nsIContentViewer ** aContentViewer)
{
NS_ENSURE_ARG_POINTER(aContentViewer);
*aContentViewer = mContentViewer;
NS_IF_ADDREF(*aContentViewer);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetChromeEventHandler(nsIDOMEventTarget* aChromeEventHandler)
{
nsCOMPtr<nsPIDOMEventTarget> piTarget =
do_QueryInterface(aChromeEventHandler);
// Weak reference. Don't addref.
mChromeEventHandler = piTarget;
NS_ASSERTION(!mScriptGlobal,
"SetChromeEventHandler() called after the script global "
"object was created! This means that the script global "
"object in this docshell won't get the right chrome event "
"handler. You really don't want to see this assert, FIX "
"YOUR CODE!");
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetChromeEventHandler(nsIDOMEventTarget** aChromeEventHandler)
{
NS_ENSURE_ARG_POINTER(aChromeEventHandler);
nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(mChromeEventHandler);
target.swap(*aChromeEventHandler);
return NS_OK;
}
/* [noscript] void setCurrentURI (in nsIURI uri); */
NS_IMETHODIMP
nsDocShell::SetCurrentURI(nsIURI *aURI)
{
SetCurrentURI(aURI, nsnull, PR_TRUE);
return NS_OK;
}
PRBool
nsDocShell::SetCurrentURI(nsIURI *aURI, nsIRequest *aRequest,
PRBool aFireOnLocationChange)
{
#ifdef PR_LOGGING
if (gDocShellLeakLog && PR_LOG_TEST(gDocShellLeakLog, PR_LOG_DEBUG)) {
nsCAutoString spec;
if (aURI)
aURI->GetSpec(spec);
PR_LogPrint("DOCSHELL %p SetCurrentURI %s\n", this, spec.get());
}
#endif
// We don't want to send a location change when we're displaying an error
// page, and we don't want to change our idea of "current URI" either
if (mLoadType == LOAD_ERROR_PAGE) {
return PR_FALSE;
}
mCurrentURI = NS_TryToMakeImmutable(aURI);
PRBool isRoot = PR_FALSE; // Is this the root docshell
PRBool isSubFrame = PR_FALSE; // Is this a subframe navigation?
nsCOMPtr<nsIDocShellTreeItem> root;
GetSameTypeRootTreeItem(getter_AddRefs(root));
if (root.get() == static_cast<nsIDocShellTreeItem *>(this))
{
// This is the root docshell
isRoot = PR_TRUE;
}
if (mLSHE) {
mLSHE->GetIsSubFrame(&isSubFrame);
}
if (!isSubFrame && !isRoot) {
/*
* We don't want to send OnLocationChange notifications when
* a subframe is being loaded for the first time, while
* visiting a frameset page
*/
return PR_FALSE;
}
if (aFireOnLocationChange) {
FireOnLocationChange(this, aRequest, aURI);
}
return !aFireOnLocationChange;
}
NS_IMETHODIMP
nsDocShell::GetCharset(char** aCharset)
{
NS_ENSURE_ARG_POINTER(aCharset);
*aCharset = nsnull;
nsCOMPtr<nsIPresShell> presShell;
GetPresShell(getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
nsIDocument *doc = presShell->GetDocument();
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
*aCharset = ToNewCString(doc->GetDocumentCharacterSet());
if (!*aCharset) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetCharset(const char* aCharset)
{
// set the default charset
nsCOMPtr<nsIContentViewer> viewer;
GetContentViewer(getter_AddRefs(viewer));
if (viewer) {
nsCOMPtr<nsIMarkupDocumentViewer> muDV(do_QueryInterface(viewer));
if (muDV) {
NS_ENSURE_SUCCESS(muDV->SetDefaultCharacterSet(nsDependentCString(aCharset)),
NS_ERROR_FAILURE);
}
}
// set the charset override
nsCOMPtr<nsIDocumentCharsetInfo> dcInfo;
GetDocumentCharsetInfo(getter_AddRefs(dcInfo));
if (dcInfo) {
nsCOMPtr<nsIAtom> csAtom;
csAtom = do_GetAtom(aCharset);
dcInfo->SetForcedCharset(csAtom);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetDocumentCharsetInfo(nsIDocumentCharsetInfo **
aDocumentCharsetInfo)
{
NS_ENSURE_ARG_POINTER(aDocumentCharsetInfo);
// if the mDocumentCharsetInfo does not exist already, we create it now
if (!mDocumentCharsetInfo) {
mDocumentCharsetInfo = do_CreateInstance(NS_DOCUMENTCHARSETINFO_CONTRACTID);
if (!mDocumentCharsetInfo)
return NS_ERROR_FAILURE;
}
*aDocumentCharsetInfo = mDocumentCharsetInfo;
NS_IF_ADDREF(*aDocumentCharsetInfo);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetDocumentCharsetInfo(nsIDocumentCharsetInfo *
aDocumentCharsetInfo)
{
mDocumentCharsetInfo = aDocumentCharsetInfo;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetChannelIsUnsafe(PRBool *aUnsafe)
{
*aUnsafe = PR_FALSE;
nsCOMPtr<nsIChannel> channel;
GetCurrentDocumentChannel(getter_AddRefs(channel));
if (!channel) {
return NS_OK;
}
nsCOMPtr<nsIJARChannel> jarChannel = do_QueryInterface(channel);
if (!jarChannel) {
return NS_OK;
}
return jarChannel->GetIsUnsafe(aUnsafe);
}
NS_IMETHODIMP
nsDocShell::GetAllowPlugins(PRBool * aAllowPlugins)
{
NS_ENSURE_ARG_POINTER(aAllowPlugins);
*aAllowPlugins = mAllowPlugins;
if (!mAllowPlugins) {
return NS_OK;
}
PRBool unsafe;
*aAllowPlugins = NS_SUCCEEDED(GetChannelIsUnsafe(&unsafe)) && !unsafe;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetAllowPlugins(PRBool aAllowPlugins)
{
mAllowPlugins = aAllowPlugins;
//XXX should enable or disable a plugin host
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetAllowJavascript(PRBool * aAllowJavascript)
{
NS_ENSURE_ARG_POINTER(aAllowJavascript);
*aAllowJavascript = mAllowJavascript;
if (!mAllowJavascript) {
return NS_OK;
}
PRBool unsafe;
*aAllowJavascript = NS_SUCCEEDED(GetChannelIsUnsafe(&unsafe)) && !unsafe;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetAllowJavascript(PRBool aAllowJavascript)
{
mAllowJavascript = aAllowJavascript;
return NS_OK;
}
NS_IMETHODIMP nsDocShell::GetAllowMetaRedirects(PRBool * aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
*aReturn = mAllowMetaRedirects;
if (!mAllowMetaRedirects) {
return NS_OK;
}
PRBool unsafe;
*aReturn = NS_SUCCEEDED(GetChannelIsUnsafe(&unsafe)) && !unsafe;
return NS_OK;
}
NS_IMETHODIMP nsDocShell::SetAllowMetaRedirects(PRBool aValue)
{
mAllowMetaRedirects = aValue;
return NS_OK;
}
NS_IMETHODIMP nsDocShell::GetAllowSubframes(PRBool * aAllowSubframes)
{
NS_ENSURE_ARG_POINTER(aAllowSubframes);
*aAllowSubframes = mAllowSubframes;
return NS_OK;
}
NS_IMETHODIMP nsDocShell::SetAllowSubframes(PRBool aAllowSubframes)
{
mAllowSubframes = aAllowSubframes;
return NS_OK;
}
NS_IMETHODIMP nsDocShell::GetAllowImages(PRBool * aAllowImages)
{
NS_ENSURE_ARG_POINTER(aAllowImages);
*aAllowImages = mAllowImages;
return NS_OK;
}
NS_IMETHODIMP nsDocShell::SetAllowImages(PRBool aAllowImages)
{
mAllowImages = aAllowImages;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetDocShellEnumerator(PRInt32 aItemType, PRInt32 aDirection, nsISimpleEnumerator **outEnum)
{
NS_ENSURE_ARG_POINTER(outEnum);
*outEnum = nsnull;
nsRefPtr<nsDocShellEnumerator> docShellEnum;
if (aDirection == ENUMERATE_FORWARDS)
docShellEnum = new nsDocShellForwardsEnumerator;
else
docShellEnum = new nsDocShellBackwardsEnumerator;
if (!docShellEnum) return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = docShellEnum->SetEnumDocShellType(aItemType);
if (NS_FAILED(rv)) return rv;
rv = docShellEnum->SetEnumerationRootItem((nsIDocShellTreeItem *)this);
if (NS_FAILED(rv)) return rv;
rv = docShellEnum->First();
if (NS_FAILED(rv)) return rv;
rv = docShellEnum->QueryInterface(NS_GET_IID(nsISimpleEnumerator), (void **)outEnum);
return rv;
}
NS_IMETHODIMP
nsDocShell::GetAppType(PRUint32 * aAppType)
{
*aAppType = mAppType;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetAppType(PRUint32 aAppType)
{
mAppType = aAppType;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetAllowAuth(PRBool * aAllowAuth)
{
*aAllowAuth = mAllowAuth;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetAllowAuth(PRBool aAllowAuth)
{
mAllowAuth = aAllowAuth;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetZoom(float *zoom)
{
NS_ENSURE_ARG_POINTER(zoom);
*zoom = 1.0f;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetZoom(float zoom)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShell::GetMarginWidth(PRInt32 * aWidth)
{
NS_ENSURE_ARG_POINTER(aWidth);
*aWidth = mMarginWidth;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetMarginWidth(PRInt32 aWidth)
{
mMarginWidth = aWidth;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetMarginHeight(PRInt32 * aHeight)
{
NS_ENSURE_ARG_POINTER(aHeight);
*aHeight = mMarginHeight;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetMarginHeight(PRInt32 aHeight)
{
mMarginHeight = aHeight;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetBusyFlags(PRUint32 * aBusyFlags)
{
NS_ENSURE_ARG_POINTER(aBusyFlags);
*aBusyFlags = mBusyFlags;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::TabToTreeOwner(PRBool aForward, PRBool* aTookFocus)
{
NS_ENSURE_ARG_POINTER(aTookFocus);
nsCOMPtr<nsIWebBrowserChromeFocus> chromeFocus = do_GetInterface(mTreeOwner);
if (chromeFocus) {
if (aForward)
*aTookFocus = NS_SUCCEEDED(chromeFocus->FocusNextElement());
else
*aTookFocus = NS_SUCCEEDED(chromeFocus->FocusPrevElement());
} else
*aTookFocus = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetSecurityUI(nsISecureBrowserUI **aSecurityUI)
{
NS_IF_ADDREF(*aSecurityUI = mSecurityUI);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetSecurityUI(nsISecureBrowserUI *aSecurityUI)
{
mSecurityUI = aSecurityUI;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetUseErrorPages(PRBool *aUseErrorPages)
{
*aUseErrorPages = mUseErrorPages;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetUseErrorPages(PRBool aUseErrorPages)
{
// If mUseErrorPages is set explicitly, stop observing the pref.
if (mObserveErrorPages) {
nsCOMPtr<nsIPrefBranch2> prefs(do_QueryInterface(mPrefs));
if (prefs) {
prefs->RemoveObserver("browser.xul.error_pages.enabled", this);
mObserveErrorPages = PR_FALSE;
}
}
mUseErrorPages = aUseErrorPages;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetPreviousTransIndex(PRInt32 *aPreviousTransIndex)
{
*aPreviousTransIndex = mPreviousTransIndex;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetLoadedTransIndex(PRInt32 *aLoadedTransIndex)
{
*aLoadedTransIndex = mLoadedTransIndex;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::HistoryPurged(PRInt32 aNumEntries)
{
// These indices are used for fastback cache eviction, to determine
// which session history entries are candidates for content viewer
// eviction. We need to adjust by the number of entries that we
// just purged from history, so that we look at the right session history
// entries during eviction.
mPreviousTransIndex = PR_MAX(-1, mPreviousTransIndex - aNumEntries);
mLoadedTransIndex = PR_MAX(0, mLoadedTransIndex - aNumEntries);
PRInt32 count = mChildList.Count();
for (PRInt32 i = 0; i < count; ++i) {
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(ChildAt(i));
if (shell) {
shell->HistoryPurged(aNumEntries);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetSessionStorageForURI(nsIURI* aURI,
nsIDOMStorage** aStorage)
{
NS_ENSURE_ARG_POINTER(aStorage);
*aStorage = nsnull;
nsCOMPtr<nsIDocShellTreeItem> topItem;
nsresult rv = GetSameTypeRootTreeItem(getter_AddRefs(topItem));
if (NS_FAILED(rv))
return rv;
if (!topItem)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDocShell> topDocShell = do_QueryInterface(topItem);
if (topDocShell != this)
return topDocShell->GetSessionStorageForURI(aURI, aStorage);
nsCAutoString currentDomain;
rv = aURI->GetAsciiHost(currentDomain);
NS_ENSURE_SUCCESS(rv, rv);
if (currentDomain.IsEmpty())
return NS_OK;
if (!mStorages.Get(currentDomain, aStorage)) {
nsCOMPtr<nsIDOMStorage> newstorage =
do_CreateInstance("@mozilla.org/dom/storage;1");
if (!newstorage)
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsPIDOMStorage> pistorage = do_QueryInterface(newstorage);
if (!pistorage)
return NS_ERROR_FAILURE;
pistorage->Init(aURI, NS_ConvertUTF8toUTF16(currentDomain), PR_FALSE);
if (!mStorages.Put(currentDomain, newstorage))
return NS_ERROR_OUT_OF_MEMORY;
*aStorage = newstorage;
NS_ADDREF(*aStorage);
}
return NS_OK;
}
nsresult
nsDocShell::AddSessionStorage(const nsACString& aDomain,
nsIDOMStorage* aStorage)
{
NS_ENSURE_ARG_POINTER(aStorage);
if (aDomain.IsEmpty())
return NS_OK;
nsCOMPtr<nsIDocShellTreeItem> topItem;
nsresult rv = GetSameTypeRootTreeItem(getter_AddRefs(topItem));
if (NS_FAILED(rv))
return rv;
if (topItem) {
nsCOMPtr<nsIDocShell> topDocShell = do_QueryInterface(topItem);
if (topDocShell == this) {
if (!mStorages.Put(aDomain, aStorage))
return NS_ERROR_OUT_OF_MEMORY;
}
else {
return topDocShell->AddSessionStorage(aDomain, aStorage);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetCurrentDocumentChannel(nsIChannel** aResult)
{
*aResult = nsnull;
if (!mContentViewer)
return NS_OK;
nsCOMPtr<nsIDOMDocument> domDoc;
nsresult rv = mContentViewer->GetDOMDocument(getter_AddRefs(domDoc));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
if (doc) {
*aResult = doc->GetChannel();
NS_IF_ADDREF(*aResult);
}
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIDocShellTreeItem
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::GetName(PRUnichar ** aName)
{
NS_ENSURE_ARG_POINTER(aName);
*aName = ToNewUnicode(mName);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetName(const PRUnichar * aName)
{
mName = aName; // this does a copy of aName
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::NameEquals(const PRUnichar *aName, PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(aName);
NS_ENSURE_ARG_POINTER(_retval);
*_retval = mName.Equals(aName);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetItemType(PRInt32 * aItemType)
{
NS_ENSURE_ARG_POINTER(aItemType);
*aItemType = mItemType;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetItemType(PRInt32 aItemType)
{
NS_ENSURE_ARG((aItemType == typeChrome) || (typeContent == aItemType));
// Only allow setting the type on root docshells. Those would be the ones
// that have the docloader service as mParent or have no mParent at all.
nsCOMPtr<nsIDocumentLoader> docLoaderService =
do_GetService(NS_DOCUMENTLOADER_SERVICE_CONTRACTID);
NS_ENSURE_TRUE(docLoaderService, NS_ERROR_UNEXPECTED);
NS_ENSURE_STATE(!mParent || mParent == docLoaderService);
mItemType = aItemType;
// disable auth prompting for anything but content
mAllowAuth = mItemType == typeContent;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetParent(nsIDocShellTreeItem ** aParent)
{
if (!mParent) {
*aParent = nsnull;
} else {
CallQueryInterface(mParent, aParent);
}
// Note that in the case when the parent is not an nsIDocShellTreeItem we
// don't want to throw; we just want to return null.
return NS_OK;
}
nsresult
nsDocShell::SetDocLoaderParent(nsDocLoader * aParent)
{
nsDocLoader::SetDocLoaderParent(aParent);
// Curse ambiguous nsISupports inheritance!
nsISupports* parent = GetAsSupports(aParent);
// If parent is another docshell, we inherit all their flags for
// allowing plugins, scripting etc.
nsCOMPtr<nsIDocShell> parentAsDocShell(do_QueryInterface(parent));
if (parentAsDocShell)
{
PRBool value;
if (NS_SUCCEEDED(parentAsDocShell->GetAllowPlugins(&value)))
{
SetAllowPlugins(value);
}
if (NS_SUCCEEDED(parentAsDocShell->GetAllowJavascript(&value)))
{
SetAllowJavascript(value);
}
if (NS_SUCCEEDED(parentAsDocShell->GetAllowMetaRedirects(&value)))
{
SetAllowMetaRedirects(value);
}
if (NS_SUCCEEDED(parentAsDocShell->GetAllowSubframes(&value)))
{
SetAllowSubframes(value);
}
if (NS_SUCCEEDED(parentAsDocShell->GetAllowImages(&value)))
{
SetAllowImages(value);
}
}
nsCOMPtr<nsIURIContentListener> parentURIListener(do_GetInterface(parent));
if (parentURIListener)
mContentListener->SetParentContentListener(parentURIListener);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetSameTypeParent(nsIDocShellTreeItem ** aParent)
{
NS_ENSURE_ARG_POINTER(aParent);
*aParent = nsnull;
nsCOMPtr<nsIDocShellTreeItem> parent =
do_QueryInterface(GetAsSupports(mParent));
if (!parent)
return NS_OK;
PRInt32 parentType;
NS_ENSURE_SUCCESS(parent->GetItemType(&parentType), NS_ERROR_FAILURE);
if (parentType == mItemType) {
parent.swap(*aParent);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetRootTreeItem(nsIDocShellTreeItem ** aRootTreeItem)
{
NS_ENSURE_ARG_POINTER(aRootTreeItem);
*aRootTreeItem = static_cast<nsIDocShellTreeItem *>(this);
nsCOMPtr<nsIDocShellTreeItem> parent;
NS_ENSURE_SUCCESS(GetParent(getter_AddRefs(parent)), NS_ERROR_FAILURE);
while (parent) {
*aRootTreeItem = parent;
NS_ENSURE_SUCCESS((*aRootTreeItem)->GetParent(getter_AddRefs(parent)),
NS_ERROR_FAILURE);
}
NS_ADDREF(*aRootTreeItem);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetSameTypeRootTreeItem(nsIDocShellTreeItem ** aRootTreeItem)
{
NS_ENSURE_ARG_POINTER(aRootTreeItem);
*aRootTreeItem = static_cast<nsIDocShellTreeItem *>(this);
nsCOMPtr<nsIDocShellTreeItem> parent;
NS_ENSURE_SUCCESS(GetSameTypeParent(getter_AddRefs(parent)),
NS_ERROR_FAILURE);
while (parent) {
*aRootTreeItem = parent;
NS_ENSURE_SUCCESS((*aRootTreeItem)->
GetSameTypeParent(getter_AddRefs(parent)),
NS_ERROR_FAILURE);
}
NS_ADDREF(*aRootTreeItem);
return NS_OK;
}
/* static */
PRBool
nsDocShell::CanAccessItem(nsIDocShellTreeItem* aTargetItem,
nsIDocShellTreeItem* aAccessingItem,
PRBool aConsiderOpener)
{
NS_PRECONDITION(aTargetItem, "Must have target item!");
if (!gValidateOrigin || !aAccessingItem) {
// Good to go
return PR_TRUE;
}
// XXXbz should we care if aAccessingItem or the document therein is
// chrome? Should those get extra privileges?
// For historical context, see:
//
// Bug 13871: Prevent frameset spoofing
// Bug 103638: Targets with same name in different windows open in wrong
// window with javascript
// Now do a security check
//
// Allow navigation if
// 1) aAccessingItem can script aTargetItem or one of its ancestors in
// the frame hierarchy or
// 2) aTargetItem is a top-level frame and aAccessingItem is its descendant
// 3) aTargetItem is a top-level frame and aAccessingItem can target
// its opener per rule (1) or (2).
if (aTargetItem == aAccessingItem) {
// A frame is allowed to navigate itself.
return PR_TRUE;
}
nsCOMPtr<nsIDocShellTreeItem> accessingRoot;
aAccessingItem->GetSameTypeRootTreeItem(getter_AddRefs(accessingRoot));
if (aTargetItem == accessingRoot) {
// A frame can navigate its root.
return PR_TRUE;
}
// Check if aAccessingItem can navigate one of aTargetItem's ancestors.
nsCOMPtr<nsIDocShellTreeItem> target = aTargetItem;
do {
if (ValidateOrigin(aAccessingItem, target)) {
return PR_TRUE;
}
nsCOMPtr<nsIDocShellTreeItem> parent;
target->GetSameTypeParent(getter_AddRefs(parent));
parent.swap(target);
} while (target);
nsCOMPtr<nsIDocShellTreeItem> targetRoot;
aTargetItem->GetSameTypeRootTreeItem(getter_AddRefs(targetRoot));
if (aTargetItem != targetRoot) {
// target is a subframe, not in accessor's frame hierarchy, and all its
// ancestors have origins different from that of the accessor. Don't
// allow access.
return PR_FALSE;
}
if (!aConsiderOpener) {
// All done here
return PR_FALSE;
}
nsCOMPtr<nsIDOMWindow> targetWindow(do_GetInterface(aTargetItem));
nsCOMPtr<nsIDOMWindowInternal> targetInternal(do_QueryInterface(targetWindow));
if (!targetInternal) {
NS_ERROR("This should not happen, really");
return PR_FALSE;
}
nsCOMPtr<nsIDOMWindowInternal> targetOpener;
targetInternal->GetOpener(getter_AddRefs(targetOpener));
nsCOMPtr<nsIWebNavigation> openerWebNav(do_GetInterface(targetOpener));
nsCOMPtr<nsIDocShellTreeItem> openerItem(do_QueryInterface(openerWebNav));
if (!openerItem) {
return PR_FALSE;
}
return CanAccessItem(openerItem, aAccessingItem, PR_FALSE);
}
static PRBool
ItemIsActive(nsIDocShellTreeItem *aItem)
{
nsCOMPtr<nsIDOMWindow> tmp(do_GetInterface(aItem));
nsCOMPtr<nsIDOMWindowInternal> window(do_QueryInterface(tmp));
if (window) {
PRBool isClosed;
if (NS_SUCCEEDED(window->GetClosed(&isClosed)) && !isClosed) {
return PR_TRUE;
}
}
return PR_FALSE;
}
NS_IMETHODIMP
nsDocShell::FindItemWithName(const PRUnichar * aName,
nsISupports * aRequestor,
nsIDocShellTreeItem * aOriginalRequestor,
nsIDocShellTreeItem ** _retval)
{
NS_ENSURE_ARG(aName);
NS_ENSURE_ARG_POINTER(_retval);
// If we don't find one, we return NS_OK and a null result
*_retval = nsnull;
if (!*aName)
return NS_OK;
if (!aRequestor)
{
nsCOMPtr<nsIDocShellTreeItem> foundItem;
// This is the entry point into the target-finding algorithm. Check
// for special names. This should only be done once, hence the check
// for a null aRequestor.
nsDependentString name(aName);
if (name.LowerCaseEqualsLiteral("_self")) {
foundItem = this;
}
else if (name.LowerCaseEqualsLiteral("_blank"))
{
// Just return null. Caller must handle creating a new window with
// a blank name himself.
return NS_OK;
}
else if (name.LowerCaseEqualsLiteral("_parent"))
{
GetSameTypeParent(getter_AddRefs(foundItem));
if(!foundItem)
foundItem = this;
}
else if (name.LowerCaseEqualsLiteral("_top"))
{
GetSameTypeRootTreeItem(getter_AddRefs(foundItem));
NS_ASSERTION(foundItem, "Must have this; worst case it's us!");
}
// _main is an IE target which should be case-insensitive but isn't
// see bug 217886 for details
else if (name.LowerCaseEqualsLiteral("_content") ||
name.EqualsLiteral("_main"))
{
// Must pass our same type root as requestor to the
// treeowner to make sure things work right.
nsCOMPtr<nsIDocShellTreeItem> root;
GetSameTypeRootTreeItem(getter_AddRefs(root));
if (mTreeOwner) {
NS_ASSERTION(root, "Must have this; worst case it's us!");
mTreeOwner->FindItemWithName(aName, root, aOriginalRequestor,
getter_AddRefs(foundItem));
}
#ifdef DEBUG
else {
NS_ERROR("Someone isn't setting up the tree owner. "
"You might like to try that. "
"Things will.....you know, work.");
// Note: _content should always exist. If we don't have one
// hanging off the treeowner, just create a named window....
// so don't return here, in case we did that and can now find
// it.
// XXXbz should we be using |root| instead of creating
// a new window?
}
#endif
}
if (foundItem && !CanAccessItem(foundItem, aOriginalRequestor)) {
foundItem = nsnull;
}
if (foundItem) {
// We return foundItem here even if it's not an active
// item since all the names we've dealt with so far are
// special cases that we won't bother looking for further.
foundItem.swap(*_retval);
return NS_OK;
}
}
// Keep looking
// First we check our name.
if (mName.Equals(aName) && ItemIsActive(this) &&
CanAccessItem(this, aOriginalRequestor)) {
NS_ADDREF(*_retval = this);
return NS_OK;
}
// This QI may fail, but the places where we want to compare, comparing
// against nsnull serves the same purpose.
nsCOMPtr<nsIDocShellTreeItem> reqAsTreeItem(do_QueryInterface(aRequestor));
// Second we check our children making sure not to ask a child if
// it is the aRequestor.
#ifdef DEBUG
nsresult rv =
#endif
FindChildWithName(aName, PR_TRUE, PR_TRUE, reqAsTreeItem,
aOriginalRequestor, _retval);
NS_ASSERTION(NS_SUCCEEDED(rv),
"FindChildWithName should not be failing here.");
if (*_retval)
return NS_OK;
// Third if we have a parent and it isn't the requestor then we
// should ask it to do the search. If it is the requestor we
// should just stop here and let the parent do the rest. If we
// don't have a parent, then we should ask the
// docShellTreeOwner to do the search.
nsCOMPtr<nsIDocShellTreeItem> parentAsTreeItem =
do_QueryInterface(GetAsSupports(mParent));
if (parentAsTreeItem) {
if (parentAsTreeItem == reqAsTreeItem)
return NS_OK;
PRInt32 parentType;
parentAsTreeItem->GetItemType(&parentType);
if (parentType == mItemType) {
return parentAsTreeItem->
FindItemWithName(aName,
static_cast<nsIDocShellTreeItem*>
(this),
aOriginalRequestor,
_retval);
}
}
// If the parent is null or not of the same type fall through and ask tree
// owner.
// This may fail, but comparing against null serves the same purpose
nsCOMPtr<nsIDocShellTreeOwner>
reqAsTreeOwner(do_QueryInterface(aRequestor));
if (mTreeOwner && mTreeOwner != reqAsTreeOwner) {
return mTreeOwner->
FindItemWithName(aName, this, aOriginalRequestor, _retval);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetTreeOwner(nsIDocShellTreeOwner ** aTreeOwner)
{
NS_ENSURE_ARG_POINTER(aTreeOwner);
*aTreeOwner = mTreeOwner;
NS_IF_ADDREF(*aTreeOwner);
return NS_OK;
}
#ifdef DEBUG_DOCSHELL_FOCUS
static void
PrintDocTree(nsIDocShellTreeItem * aParentNode, int aLevel)
{
for (PRInt32 i=0;i<aLevel;i++) printf(" ");
PRInt32 childWebshellCount;
aParentNode->GetChildCount(&childWebshellCount);
nsCOMPtr<nsIDocShell> parentAsDocShell(do_QueryInterface(aParentNode));
PRInt32 type;
aParentNode->GetItemType(&type);
nsCOMPtr<nsIPresShell> presShell;
parentAsDocShell->GetPresShell(getter_AddRefs(presShell));
nsCOMPtr<nsPresContext> presContext;
parentAsDocShell->GetPresContext(getter_AddRefs(presContext));
nsIDocument *doc = presShell->GetDocument();
nsCOMPtr<nsIDOMWindowInternal> domwin(doc->GetWindow());
nsCOMPtr<nsIWidget> widget;
nsIViewManager* vm = presShell->GetViewManager();
if (vm) {
vm->GetWidget(getter_AddRefs(widget));
}
nsIContent* rootContent = doc->GetRootContent();
printf("DS %p Ty %s Doc %p DW %p EM %p CN %p\n",
(void*)parentAsDocShell.get(),
type==nsIDocShellTreeItem::typeChrome?"Chr":"Con",
(void*)doc, (void*)domwin.get(),
(void*)presContext->EventStateManager(), (void*)rootContent);
if (childWebshellCount > 0) {
for (PRInt32 i=0;i<childWebshellCount;i++) {
nsCOMPtr<nsIDocShellTreeItem> child;
aParentNode->GetChildAt(i, getter_AddRefs(child));
PrintDocTree(child, aLevel+1);
}
}
}
static void
PrintDocTree(nsIDocShellTreeItem * aParentNode)
{
NS_ASSERTION(aParentNode, "Pointer is null!");
nsCOMPtr<nsIDocShellTreeItem> parentItem;
aParentNode->GetParent(getter_AddRefs(parentItem));
while (parentItem) {
nsCOMPtr<nsIDocShellTreeItem>tmp;
parentItem->GetParent(getter_AddRefs(tmp));
if (!tmp) {
break;
}
parentItem = tmp;
}
if (!parentItem) {
parentItem = aParentNode;
}
PrintDocTree(parentItem, 0);
}
#endif
NS_IMETHODIMP
nsDocShell::SetTreeOwner(nsIDocShellTreeOwner * aTreeOwner)
{
#ifdef DEBUG_DOCSHELL_FOCUS
nsCOMPtr<nsIDocShellTreeItem> item(do_QueryInterface(aTreeOwner));
if (item) {
PrintDocTree(item);
}
#endif
// Don't automatically set the progress based on the tree owner for frames
if (!IsFrame()) {
nsCOMPtr<nsIWebProgress> webProgress =
do_QueryInterface(GetAsSupports(this));
if (webProgress) {
nsCOMPtr<nsIWebProgressListener>
oldListener(do_QueryInterface(mTreeOwner));
nsCOMPtr<nsIWebProgressListener>
newListener(do_QueryInterface(aTreeOwner));
if (oldListener) {
webProgress->RemoveProgressListener(oldListener);
}
if (newListener) {
webProgress->AddProgressListener(newListener,
nsIWebProgress::NOTIFY_ALL);
}
}
}
mTreeOwner = aTreeOwner; // Weak reference per API
PRInt32 i, n = mChildList.Count();
for (i = 0; i < n; i++) {
nsCOMPtr<nsIDocShellTreeItem> child = do_QueryInterface(ChildAt(i));
NS_ENSURE_TRUE(child, NS_ERROR_FAILURE);
PRInt32 childType = ~mItemType; // Set it to not us in case the get fails
child->GetItemType(&childType); // We don't care if this fails, if it does we won't set the owner
if (childType == mItemType)
child->SetTreeOwner(aTreeOwner);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetChildOffset(PRUint32 aChildOffset)
{
mChildOffset = aChildOffset;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetIsInUnload(PRBool* aIsInUnload)
{
*aIsInUnload = mFiredUnloadEvent;
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIDocShellTreeNode
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::GetChildCount(PRInt32 * aChildCount)
{
NS_ENSURE_ARG_POINTER(aChildCount);
*aChildCount = mChildList.Count();
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::AddChild(nsIDocShellTreeItem * aChild)
{
NS_ENSURE_ARG_POINTER(aChild);
nsRefPtr<nsDocLoader> childAsDocLoader = GetAsDocLoader(aChild);
NS_ENSURE_TRUE(childAsDocLoader, NS_ERROR_UNEXPECTED);
// Make sure we're not creating a loop in the docshell tree
nsDocLoader* ancestor = this;
do {
if (childAsDocLoader == ancestor) {
return NS_ERROR_ILLEGAL_VALUE;
}
ancestor = ancestor->GetParent();
} while (ancestor);
// Make sure to remove the child from its current parent.
nsDocLoader* childsParent = childAsDocLoader->GetParent();
if (childsParent) {
childsParent->RemoveChildLoader(childAsDocLoader);
}
// Make sure to clear the treeowner in case this child is a different type
// from us.
aChild->SetTreeOwner(nsnull);
nsresult res = AddChildLoader(childAsDocLoader);
NS_ENSURE_SUCCESS(res, res);
NS_ASSERTION(mChildList.Count() > 0,
"child list must not be empty after a successful add");
// Set the child's index in the parent's children list
// XXX What if the parent had different types of children?
// XXX in that case docshell hierarchy and SH hierarchy won't match.
{
nsCOMPtr<nsIDocShell> childDocShell = do_QueryInterface(aChild);
if (childDocShell)
childDocShell->SetChildOffset(mChildList.Count() - 1);
}
/* Set the child's global history if the parent has one */
if (mGlobalHistory) {
nsCOMPtr<nsIDocShellHistory>
dsHistoryChild(do_QueryInterface(aChild));
if (dsHistoryChild)
dsHistoryChild->SetUseGlobalHistory(PR_TRUE);
}
PRInt32 childType = ~mItemType; // Set it to not us in case the get fails
aChild->GetItemType(&childType);
if (childType != mItemType)
return NS_OK;
// Everything below here is only done when the child is the same type.
aChild->SetTreeOwner(mTreeOwner);
nsCOMPtr<nsIDocShell> childAsDocShell(do_QueryInterface(aChild));
if (!childAsDocShell)
return NS_OK;
// charset, style-disabling, and zoom will be inherited in SetupNewViewer()
// Now take this document's charset and set the parentCharset field of the
// child's DocumentCharsetInfo to it. We'll later use that field, in the
// loading process, for the charset choosing algorithm.
// If we fail, at any point, we just return NS_OK.
// This code has some performance impact. But this will be reduced when
// the current charset will finally be stored as an Atom, avoiding the
// alias resolution extra look-up.
// we are NOT going to propagate the charset is this Chrome's docshell
if (mItemType == nsIDocShellTreeItem::typeChrome)
return NS_OK;
// get the child's docCSInfo object
nsCOMPtr<nsIDocumentCharsetInfo> dcInfo = NULL;
res = childAsDocShell->GetDocumentCharsetInfo(getter_AddRefs(dcInfo));
if (NS_FAILED(res) || (!dcInfo))
return NS_OK;
// get the parent's current charset
nsCOMPtr<nsIDocumentViewer> docv(do_QueryInterface(mContentViewer));
if (!docv)
return NS_OK;
nsCOMPtr<nsIDocument> doc;
res = docv->GetDocument(getter_AddRefs(doc));
if (NS_FAILED(res) || (!doc))
return NS_OK;
const nsACString &parentCS = doc->GetDocumentCharacterSet();
PRBool isWyciwyg = PR_FALSE;
if (mCurrentURI) {
// Check if the url is wyciwyg
mCurrentURI->SchemeIs("wyciwyg", &isWyciwyg);
}
if (!isWyciwyg) {
// If this docshell is loaded from a wyciwyg: URI, don't
// advertise our charset since it does not in any way reflect
// the actual source charset, which is what we're trying to
// expose here.
// set the child's parentCharset
nsCOMPtr<nsIAtom> parentCSAtom(do_GetAtom(parentCS));
res = dcInfo->SetParentCharset(parentCSAtom);
if (NS_FAILED(res))
return NS_OK;
PRInt32 charsetSource = doc->GetDocumentCharacterSetSource();
// set the child's parentCharset
res = dcInfo->SetParentCharsetSource(charsetSource);
if (NS_FAILED(res))
return NS_OK;
}
// printf("### 1 >>> Adding child. Parent CS = %s. ItemType = %d.\n", NS_LossyConvertUTF16toASCII(parentCS).get(), mItemType);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::RemoveChild(nsIDocShellTreeItem * aChild)
{
NS_ENSURE_ARG_POINTER(aChild);
nsRefPtr<nsDocLoader> childAsDocLoader = GetAsDocLoader(aChild);
NS_ENSURE_TRUE(childAsDocLoader, NS_ERROR_UNEXPECTED);
nsresult rv = RemoveChildLoader(childAsDocLoader);
NS_ENSURE_SUCCESS(rv, rv);
aChild->SetTreeOwner(nsnull);
return nsDocLoader::AddDocLoaderAsChildOfRoot(childAsDocLoader);
}
NS_IMETHODIMP
nsDocShell::GetChildAt(PRInt32 aIndex, nsIDocShellTreeItem ** aChild)
{
NS_ENSURE_ARG_POINTER(aChild);
#ifdef DEBUG
if (aIndex < 0) {
NS_WARNING("Negative index passed to GetChildAt");
}
else if (aIndex >= mChildList.Count()) {
NS_WARNING("Too large an index passed to GetChildAt");
}
#endif
nsIDocumentLoader* child = SafeChildAt(aIndex);
NS_ENSURE_TRUE(child, NS_ERROR_UNEXPECTED);
return CallQueryInterface(child, aChild);
}
NS_IMETHODIMP
nsDocShell::FindChildWithName(const PRUnichar * aName,
PRBool aRecurse, PRBool aSameType,
nsIDocShellTreeItem * aRequestor,
nsIDocShellTreeItem * aOriginalRequestor,
nsIDocShellTreeItem ** _retval)
{
NS_ENSURE_ARG(aName);
NS_ENSURE_ARG_POINTER(_retval);
*_retval = nsnull; // if we don't find one, we return NS_OK and a null result
if (!*aName)
return NS_OK;
nsXPIDLString childName;
PRInt32 i, n = mChildList.Count();
for (i = 0; i < n; i++) {
nsCOMPtr<nsIDocShellTreeItem> child = do_QueryInterface(ChildAt(i));
NS_ENSURE_TRUE(child, NS_ERROR_FAILURE);
PRInt32 childType;
child->GetItemType(&childType);
if (aSameType && (childType != mItemType))
continue;
PRBool childNameEquals = PR_FALSE;
child->NameEquals(aName, &childNameEquals);
if (childNameEquals && ItemIsActive(child) &&
CanAccessItem(child, aOriginalRequestor)) {
child.swap(*_retval);
break;
}
if (childType != mItemType) //Only ask it to check children if it is same type
continue;
if (aRecurse && (aRequestor != child)) // Only ask the child if it isn't the requestor
{
// See if child contains the shell with the given name
#ifdef DEBUG
nsresult rv =
#endif
child->FindChildWithName(aName, PR_TRUE,
aSameType,
static_cast<nsIDocShellTreeItem*>
(this),
aOriginalRequestor,
_retval);
NS_ASSERTION(NS_SUCCEEDED(rv),
"FindChildWithName should not fail here");
if (*_retval) // found it
return NS_OK;
}
}
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIDocShellHistory
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::GetChildSHEntry(PRInt32 aChildOffset, nsISHEntry ** aResult)
{
nsresult rv = NS_OK;
NS_ENSURE_ARG_POINTER(aResult);
*aResult = nsnull;
// A nsISHEntry for a child is *only* available when the parent is in
// the progress of loading a document too...
if (mLSHE) {
/* Before looking for the subframe's url, check
* the expiration status of the parent. If the parent
* has expired from cache, then subframes will not be
* loaded from history in certain situations.
*/
PRBool parentExpired=PR_FALSE;
mLSHE->GetExpirationStatus(&parentExpired);
/* Get the parent's Load Type so that it can be set on the child too.
* By default give a loadHistory value
*/
PRUint32 loadType = nsIDocShellLoadInfo::loadHistory;
mLSHE->GetLoadType(&loadType);
// If the user did a shift-reload on this frameset page,
// we don't want to load the subframes from history.
if (loadType == nsIDocShellLoadInfo::loadReloadBypassCache ||
loadType == nsIDocShellLoadInfo::loadReloadBypassProxy ||
loadType == nsIDocShellLoadInfo::loadReloadBypassProxyAndCache ||
loadType == nsIDocShellLoadInfo::loadRefresh)
return rv;
/* If the user pressed reload and the parent frame has expired
* from cache, we do not want to load the child frame from history.
*/
if (parentExpired && (loadType == nsIDocShellLoadInfo::loadReloadNormal)) {
// The parent has expired. Return null.
*aResult = nsnull;
return rv;
}
nsCOMPtr<nsISHContainer> container(do_QueryInterface(mLSHE));
if (container) {
// Get the child subframe from session history.
rv = container->GetChildAt(aChildOffset, aResult);
if (*aResult)
(*aResult)->SetLoadType(loadType);
}
}
return rv;
}
NS_IMETHODIMP
nsDocShell::AddChildSHEntry(nsISHEntry * aCloneRef, nsISHEntry * aNewEntry,
PRInt32 aChildOffset)
{
nsresult rv;
if (mLSHE) {
/* You get here if you are currently building a
* hierarchy ie.,you just visited a frameset page
*/
nsCOMPtr<nsISHContainer> container(do_QueryInterface(mLSHE, &rv));
if (container) {
rv = container->AddChild(aNewEntry, aChildOffset);
}
}
else if (!aCloneRef) {
/* This is an initial load in some subframe. Just append it if we can */
nsCOMPtr<nsISHContainer> container(do_QueryInterface(mOSHE, &rv));
if (container) {
rv = container->AddChild(aNewEntry, aChildOffset);
}
}
else if (mSessionHistory) {
/* You are currently in the rootDocShell.
* You will get here when a subframe has a new url
* to load and you have walked up the tree all the
* way to the top to clone the current SHEntry hierarchy
* and replace the subframe where a new url was loaded with
* a new entry.
*/
PRInt32 index = -1;
nsCOMPtr<nsIHistoryEntry> currentHE;
mSessionHistory->GetIndex(&index);
if (index < 0)
return NS_ERROR_FAILURE;
rv = mSessionHistory->GetEntryAtIndex(index, PR_FALSE,
getter_AddRefs(currentHE));
NS_ENSURE_TRUE(currentHE, NS_ERROR_FAILURE);
nsCOMPtr<nsISHEntry> currentEntry(do_QueryInterface(currentHE));
if (currentEntry) {
PRUint32 cloneID = 0;
nsCOMPtr<nsISHEntry> nextEntry;
aCloneRef->GetID(&cloneID);
rv = CloneAndReplace(currentEntry, this, cloneID, aNewEntry,
getter_AddRefs(nextEntry));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsISHistoryInternal>
shPrivate(do_QueryInterface(mSessionHistory));
NS_ENSURE_TRUE(shPrivate, NS_ERROR_FAILURE);
rv = shPrivate->AddEntry(nextEntry, PR_TRUE);
}
}
}
else {
/* Just pass this along */
nsCOMPtr<nsIDocShellHistory> parent =
do_QueryInterface(GetAsSupports(mParent), &rv);
if (parent) {
rv = parent->AddChildSHEntry(aCloneRef, aNewEntry, aChildOffset);
}
}
return rv;
}
nsresult
nsDocShell::DoAddChildSHEntry(nsISHEntry* aNewEntry, PRInt32 aChildOffset)
{
/* You will get here when you are in a subframe and
* a new url has been loaded on you.
* The mOSHE in this subframe will be the previous url's
* mOSHE. This mOSHE will be used as the identification
* for this subframe in the CloneAndReplace function.
*/
// In this case, we will end up calling AddEntry, which increases the
// current index by 1
nsCOMPtr<nsISHistory> rootSH;
GetRootSessionHistory(getter_AddRefs(rootSH));
if (rootSH) {
rootSH->GetIndex(&mPreviousTransIndex);
}
nsresult rv;
nsCOMPtr<nsIDocShellHistory> parent =
do_QueryInterface(GetAsSupports(mParent), &rv);
if (parent) {
rv = parent->AddChildSHEntry(mOSHE, aNewEntry, aChildOffset);
}
if (rootSH) {
rootSH->GetIndex(&mLoadedTransIndex);
#ifdef DEBUG_PAGE_CACHE
printf("Previous index: %d, Loaded index: %d\n\n", mPreviousTransIndex,
mLoadedTransIndex);
#endif
}
return rv;
}
NS_IMETHODIMP
nsDocShell::SetUseGlobalHistory(PRBool aUseGlobalHistory)
{
nsresult rv;
if (!aUseGlobalHistory) {
mGlobalHistory = nsnull;
return NS_OK;
}
if (mGlobalHistory) {
return NS_OK;
}
mGlobalHistory = do_GetService(NS_GLOBALHISTORY2_CONTRACTID, &rv);
return rv;
}
NS_IMETHODIMP
nsDocShell::GetUseGlobalHistory(PRBool *aUseGlobalHistory)
{
*aUseGlobalHistory = (mGlobalHistory != nsnull);
return NS_OK;
}
//-------------------------------------
//-- Helper Method for Print discovery
//-------------------------------------
PRBool
nsDocShell::IsPrintingOrPP(PRBool aDisplayErrorDialog)
{
if (mIsPrintingOrPP && aDisplayErrorDialog) {
DisplayLoadError(NS_ERROR_DOCUMENT_IS_PRINTMODE, nsnull, nsnull);
}
return mIsPrintingOrPP;
}
PRBool
nsDocShell::IsNavigationAllowed(PRBool aDisplayPrintErrorDialog)
{
return !IsPrintingOrPP(aDisplayPrintErrorDialog) && !mFiredUnloadEvent;
}
//*****************************************************************************
// nsDocShell::nsIWebNavigation
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::GetCanGoBack(PRBool * aCanGoBack)
{
if (!IsNavigationAllowed(PR_FALSE)) {
*aCanGoBack = PR_FALSE;
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
nsCOMPtr<nsISHistory> rootSH;
rv = GetRootSessionHistory(getter_AddRefs(rootSH));
nsCOMPtr<nsIWebNavigation> webnav(do_QueryInterface(rootSH));
NS_ENSURE_TRUE(webnav, NS_ERROR_FAILURE);
rv = webnav->GetCanGoBack(aCanGoBack);
return rv;
}
NS_IMETHODIMP
nsDocShell::GetCanGoForward(PRBool * aCanGoForward)
{
if (!IsNavigationAllowed(PR_FALSE)) {
*aCanGoForward = PR_FALSE;
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
nsCOMPtr<nsISHistory> rootSH;
rv = GetRootSessionHistory(getter_AddRefs(rootSH));
nsCOMPtr<nsIWebNavigation> webnav(do_QueryInterface(rootSH));
NS_ENSURE_TRUE(webnav, NS_ERROR_FAILURE);
rv = webnav->GetCanGoForward(aCanGoForward);
return rv;
}
NS_IMETHODIMP
nsDocShell::GoBack()
{
if (!IsNavigationAllowed()) {
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
nsCOMPtr<nsISHistory> rootSH;
rv = GetRootSessionHistory(getter_AddRefs(rootSH));
nsCOMPtr<nsIWebNavigation> webnav(do_QueryInterface(rootSH));
NS_ENSURE_TRUE(webnav, NS_ERROR_FAILURE);
rv = webnav->GoBack();
return rv;
}
NS_IMETHODIMP
nsDocShell::GoForward()
{
if (!IsNavigationAllowed()) {
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
nsCOMPtr<nsISHistory> rootSH;
rv = GetRootSessionHistory(getter_AddRefs(rootSH));
nsCOMPtr<nsIWebNavigation> webnav(do_QueryInterface(rootSH));
NS_ENSURE_TRUE(webnav, NS_ERROR_FAILURE);
rv = webnav->GoForward();
return rv;
}
NS_IMETHODIMP nsDocShell::GotoIndex(PRInt32 aIndex)
{
if (!IsNavigationAllowed()) {
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
nsCOMPtr<nsISHistory> rootSH;
rv = GetRootSessionHistory(getter_AddRefs(rootSH));
nsCOMPtr<nsIWebNavigation> webnav(do_QueryInterface(rootSH));
NS_ENSURE_TRUE(webnav, NS_ERROR_FAILURE);
rv = webnav->GotoIndex(aIndex);
return rv;
}
NS_IMETHODIMP
nsDocShell::LoadURI(const PRUnichar * aURI,
PRUint32 aLoadFlags,
nsIURI * aReferringURI,
nsIInputStream * aPostStream,
nsIInputStream * aHeaderStream)
{
if (!IsNavigationAllowed()) {
return NS_OK; // JS may not handle returning of an error code
}
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_OK;
// Create a URI from our string; if that succeeds, we want to
// change aLoadFlags to not include the ALLOW_THIRD_PARTY_FIXUP
// flag.
NS_ConvertUTF16toUTF8 uriString(aURI);
// Cleanup the empty spaces that might be on each end.
uriString.Trim(" ");
// Eliminate embedded newlines, which single-line text fields now allow:
uriString.StripChars("\r\n");
NS_ENSURE_TRUE(!uriString.IsEmpty(), NS_ERROR_FAILURE);
rv = NS_NewURI(getter_AddRefs(uri), uriString);
if (uri) {
aLoadFlags &= ~LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
}
if (sURIFixup) {
// Call the fixup object. This will clobber the rv from NS_NewURI
// above, but that's fine with us. Note that we need to do this even
// if NS_NewURI returned a URI, because fixup handles nested URIs, etc
// (things like view-source:mozilla.org for example).
PRUint32 fixupFlags = 0;
if (aLoadFlags & LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP) {
fixupFlags |= nsIURIFixup::FIXUP_FLAG_ALLOW_KEYWORD_LOOKUP;
}
rv = sURIFixup->CreateFixupURI(uriString, fixupFlags,
getter_AddRefs(uri));
}
// else no fixup service so just use the URI we created and see
// what happens
if (NS_ERROR_MALFORMED_URI == rv) {
DisplayLoadError(rv, uri, aURI);
}
if (NS_FAILED(rv) || !uri)
return NS_ERROR_FAILURE;
PopupControlState popupState;
if (aLoadFlags & LOAD_FLAGS_ALLOW_POPUPS) {
popupState = openAllowed;
aLoadFlags &= ~LOAD_FLAGS_ALLOW_POPUPS;
} else {
popupState = openOverridden;
}
nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(mScriptGlobal));
nsAutoPopupStatePusher statePusher(win, popupState);
// Don't pass certain flags that aren't needed and end up confusing
// ConvertLoadTypeToDocShellLoadInfo. We do need to ensure that they are
// passed to LoadURI though, since it uses them.
PRUint32 extraFlags = (aLoadFlags & EXTRA_LOAD_FLAGS);
aLoadFlags &= ~EXTRA_LOAD_FLAGS;
nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
rv = CreateLoadInfo(getter_AddRefs(loadInfo));
if (NS_FAILED(rv)) return rv;
PRUint32 loadType = MAKE_LOAD_TYPE(LOAD_NORMAL, aLoadFlags);
loadInfo->SetLoadType(ConvertLoadTypeToDocShellLoadInfo(loadType));
loadInfo->SetPostDataStream(aPostStream);
loadInfo->SetReferrer(aReferringURI);
loadInfo->SetHeadersStream(aHeaderStream);
rv = LoadURI(uri, loadInfo, extraFlags, PR_TRUE);
return rv;
}
NS_IMETHODIMP
nsDocShell::DisplayLoadError(nsresult aError, nsIURI *aURI,
const PRUnichar *aURL,
nsIChannel* aFailedChannel)
{
// Get prompt and string bundle servcies
nsCOMPtr<nsIPrompt> prompter;
nsCOMPtr<nsIStringBundle> stringBundle;
GetPromptAndStringBundle(getter_AddRefs(prompter),
getter_AddRefs(stringBundle));
NS_ENSURE_TRUE(stringBundle, NS_ERROR_FAILURE);
NS_ENSURE_TRUE(prompter, NS_ERROR_FAILURE);
nsAutoString error;
const PRUint32 kMaxFormatStrArgs = 2;
nsAutoString formatStrs[kMaxFormatStrArgs];
PRUint32 formatStrCount = 0;
nsresult rv = NS_OK;
nsAutoString messageStr;
nsCAutoString cssClass;
nsCAutoString errorPage;
errorPage.AssignLiteral("neterror");
// Turn the error code into a human readable error message.
if (NS_ERROR_UNKNOWN_PROTOCOL == aError) {
NS_ENSURE_ARG_POINTER(aURI);
// extract the scheme
nsCAutoString scheme;
aURI->GetScheme(scheme);
CopyASCIItoUTF16(scheme, formatStrs[0]);
formatStrCount = 1;
error.AssignLiteral("protocolNotFound");
}
else if (NS_ERROR_FILE_NOT_FOUND == aError) {
NS_ENSURE_ARG_POINTER(aURI);
nsCAutoString spec;
// displaying "file://" is aesthetically unpleasing and could even be
// confusing to the user
PRBool isFileURI = PR_FALSE;
rv = aURI->SchemeIs("file", &isFileURI);
if (NS_FAILED(rv))
return rv;
if (isFileURI)
aURI->GetPath(spec);
else
aURI->GetSpec(spec);
nsCAutoString charset;
// unescape and convert from origin charset
aURI->GetOriginCharset(charset);
nsCOMPtr<nsITextToSubURI> textToSubURI(
do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv))
// UnEscapeURIForUI always succeeds
textToSubURI->UnEscapeURIForUI(charset, spec, formatStrs[0]);
else
CopyUTF8toUTF16(spec, formatStrs[0]);
rv = NS_OK;
formatStrCount = 1;
error.AssignLiteral("fileNotFound");
}
else if (NS_ERROR_UNKNOWN_HOST == aError) {
NS_ENSURE_ARG_POINTER(aURI);
// Get the host
nsCAutoString host;
nsCOMPtr<nsIURI> innermostURI = NS_GetInnermostURI(aURI);
innermostURI->GetHost(host);
CopyUTF8toUTF16(host, formatStrs[0]);
formatStrCount = 1;
error.AssignLiteral("dnsNotFound");
}
else if(NS_ERROR_CONNECTION_REFUSED == aError) {
NS_ENSURE_ARG_POINTER(aURI);
// Build up the host:port string.
nsCAutoString hostport;
aURI->GetHostPort(hostport);
CopyUTF8toUTF16(hostport, formatStrs[0]);
formatStrCount = 1;
error.AssignLiteral("connectionFailure");
}
else if(NS_ERROR_NET_INTERRUPT == aError) {
NS_ENSURE_ARG_POINTER(aURI);
// Build up the host:port string.
nsCAutoString hostport;
aURI->GetHostPort(hostport);
CopyUTF8toUTF16(hostport, formatStrs[0]);
formatStrCount = 1;
error.AssignLiteral("netInterrupt");
}
else if (NS_ERROR_NET_TIMEOUT == aError) {
NS_ENSURE_ARG_POINTER(aURI);
// Get the host
nsCAutoString host;
aURI->GetHost(host);
CopyUTF8toUTF16(host, formatStrs[0]);
formatStrCount = 1;
error.AssignLiteral("netTimeout");
}
else if (NS_ERROR_GET_MODULE(aError) == NS_ERROR_MODULE_SECURITY) {
nsCOMPtr<nsINSSErrorsService> nsserr =
do_GetService(NS_NSS_ERRORS_SERVICE_CONTRACTID);
PRUint32 errorClass;
if (!nsserr ||
NS_FAILED(nsserr->GetErrorClass(aError, &errorClass))) {
errorClass = nsINSSErrorsService::ERROR_CLASS_SSL_PROTOCOL;
}
nsCOMPtr<nsISupports> securityInfo;
nsCOMPtr<nsITransportSecurityInfo> tsi;
if (aFailedChannel)
aFailedChannel->GetSecurityInfo(getter_AddRefs(securityInfo));
tsi = do_QueryInterface(securityInfo);
if (tsi) {
// Usually we should have aFailedChannel and get a detailed message
tsi->GetErrorMessage(getter_Copies(messageStr));
}
else {
// No channel, let's obtain the generic error message
if (nsserr) {
nsserr->GetErrorMessage(aError, messageStr);
}
}
if (!messageStr.IsEmpty()) {
if (errorClass == nsINSSErrorsService::ERROR_CLASS_BAD_CERT) {
error.AssignLiteral("nssBadCert");
} else {
error.AssignLiteral("nssFailure2");
}
}
} else if (NS_ERROR_PHISHING_URI == aError || NS_ERROR_MALWARE_URI == aError) {
nsCAutoString host;
aURI->GetHost(host);
CopyUTF8toUTF16(host, formatStrs[0]);
formatStrCount = 1;
// Malware and phishing detectors may want to use an alternate error
// page, but if the pref's not set, we'll fall back on the standard page
nsXPIDLCString alternateErrorPage;
mPrefs->GetCharPref("urlclassifier.alternate_error_page",
getter_Copies(alternateErrorPage));
if (alternateErrorPage)
errorPage.Assign(alternateErrorPage);
if (NS_ERROR_PHISHING_URI == aError)
error.AssignLiteral("phishingBlocked");
else
error.AssignLiteral("malwareBlocked");
cssClass.AssignLiteral("blacklist");
}
else {
// Errors requiring simple formatting
switch (aError) {
case NS_ERROR_MALFORMED_URI:
// URI is malformed
error.AssignLiteral("malformedURI");
break;
case NS_ERROR_REDIRECT_LOOP:
// Doc failed to load because the server generated too many redirects
error.AssignLiteral("redirectLoop");
break;
case NS_ERROR_UNKNOWN_SOCKET_TYPE:
// Doc failed to load because PSM is not installed
error.AssignLiteral("unknownSocketType");
break;
case NS_ERROR_NET_RESET:
// Doc failed to load because the server kept reseting the connection
// before we could read any data from it
error.AssignLiteral("netReset");
break;
case NS_ERROR_DOCUMENT_NOT_CACHED:
// Doc falied to load because we are offline and the cache does not
// contain a copy of the document.
error.AssignLiteral("netOffline");
break;
case NS_ERROR_DOCUMENT_IS_PRINTMODE:
// Doc navigation attempted while Printing or Print Preview
error.AssignLiteral("isprinting");
break;
case NS_ERROR_PORT_ACCESS_NOT_ALLOWED:
// Port blocked for security reasons
error.AssignLiteral("deniedPortAccess");
break;
case NS_ERROR_UNKNOWN_PROXY_HOST:
// Proxy hostname could not be resolved.
error.AssignLiteral("proxyResolveFailure");
break;
case NS_ERROR_PROXY_CONNECTION_REFUSED:
// Proxy connection was refused.
error.AssignLiteral("proxyConnectFailure");
break;
case NS_ERROR_INVALID_CONTENT_ENCODING:
// Bad Content Encoding.
error.AssignLiteral("contentEncodingError");
break;
case NS_ERROR_UNSAFE_CONTENT_TYPE:
// Channel refused to load from an unrecognized content type.
error.AssignLiteral("unsafeContentType");
break;
}
}
// Test if the error should be displayed
if (error.IsEmpty()) {
return NS_OK;
}
// Test if the error needs to be formatted
if (!messageStr.IsEmpty()) {
// already obtained message
}
else if (formatStrCount > 0) {
const PRUnichar *strs[kMaxFormatStrArgs];
for (PRUint32 i = 0; i < formatStrCount; i++) {
strs[i] = formatStrs[i].get();
}
nsXPIDLString str;
rv = stringBundle->FormatStringFromName(
error.get(),
strs, formatStrCount, getter_Copies(str));
NS_ENSURE_SUCCESS(rv, rv);
messageStr.Assign(str.get());
}
else
{
nsXPIDLString str;
rv = stringBundle->GetStringFromName(
error.get(),
getter_Copies(str));
NS_ENSURE_SUCCESS(rv, rv);
messageStr.Assign(str.get());
}
// Display the error as a page or an alert prompt
NS_ENSURE_FALSE(messageStr.IsEmpty(), NS_ERROR_FAILURE);
// Note: For now, display an alert instead of an error page if we have no
// URI object. Missing URI objects are handled badly by session history.
if (mUseErrorPages && aURI && aFailedChannel) {
// Display an error page
LoadErrorPage(aURI, aURL, errorPage.get(), error.get(),
messageStr.get(), cssClass.get(), aFailedChannel);
}
else
{
// The prompter reqires that our private window has a document (or it
// asserts). Satisfy that assertion now since GetDocument will force
// creation of one if it hasn't already been created.
nsCOMPtr<nsPIDOMWindow> pwin(do_QueryInterface(mScriptGlobal));
if (pwin) {
nsCOMPtr<nsIDOMDocument> doc;
pwin->GetDocument(getter_AddRefs(doc));
}
// Display a message box
prompter->Alert(nsnull, messageStr.get());
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::LoadErrorPage(nsIURI *aURI, const PRUnichar *aURL,
const char *aErrorPage,
const PRUnichar *aErrorType,
const PRUnichar *aDescription,
const char *aCSSClass,
nsIChannel* aFailedChannel)
{
#if defined(PR_LOGGING) && defined(DEBUG)
if (PR_LOG_TEST(gDocShellLog, PR_LOG_DEBUG)) {
nsCAutoString spec;
aURI->GetSpec(spec);
nsCAutoString chanName;
if (aFailedChannel)
aFailedChannel->GetName(chanName);
else
chanName.AssignLiteral("<no channel>");
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]::LoadErrorPage(\"%s\", \"%s\", {...}, [%s])\n", this,
spec.get(), NS_ConvertUTF16toUTF8(aURL).get(), chanName.get()));
}
#endif
// Create an shistory entry for the old load, if we have a channel
if (aFailedChannel) {
mURIResultedInDocument = PR_TRUE;
OnLoadingSite(aFailedChannel, PR_TRUE, PR_FALSE);
} else if (aURI) {
mURIResultedInDocument = PR_TRUE;
OnNewURI(aURI, nsnull, mLoadType, PR_TRUE, PR_FALSE);
}
// Be sure to have a correct mLSHE, it may have been cleared by
// EndPageLoad. See bug 302115.
if (mSessionHistory && !mLSHE) {
PRInt32 idx;
mSessionHistory->GetRequestedIndex(&idx);
nsCOMPtr<nsIHistoryEntry> entry;
mSessionHistory->GetEntryAtIndex(idx, PR_FALSE,
getter_AddRefs(entry));
mLSHE = do_QueryInterface(entry);
}
nsCAutoString url;
nsCAutoString charset;
if (aURI)
{
// Set our current URI
SetCurrentURI(aURI);
nsresult rv = aURI->GetSpec(url);
rv |= aURI->GetOriginCharset(charset);
NS_ENSURE_SUCCESS(rv, rv);
}
else if (aURL)
{
CopyUTF16toUTF8(aURL, url);
}
else
{
return NS_ERROR_INVALID_POINTER;
}
// Create a URL to pass all the error information through to the page.
char *escapedUrl = nsEscape(url.get(), url_Path);
char *escapedCharset = nsEscape(charset.get(), url_Path);
char *escapedError = nsEscape(NS_ConvertUTF16toUTF8(aErrorType).get(), url_Path);
char *escapedDescription = nsEscape(NS_ConvertUTF16toUTF8(aDescription).get(), url_Path);
char *escapedCSSClass = nsEscape(aCSSClass, url_Path);
nsCString errorPageUrl("about:");
errorPageUrl.AppendASCII(aErrorPage);
errorPageUrl.AppendLiteral("?e=");
errorPageUrl.AppendASCII(escapedError);
errorPageUrl.AppendLiteral("&u=");
errorPageUrl.AppendASCII(escapedUrl);
if (escapedCSSClass && escapedCSSClass[0]) {
errorPageUrl.AppendASCII("&s=");
errorPageUrl.AppendASCII(escapedCSSClass);
}
errorPageUrl.AppendLiteral("&c=");
errorPageUrl.AppendASCII(escapedCharset);
errorPageUrl.AppendLiteral("&d=");
errorPageUrl.AppendASCII(escapedDescription);
nsMemory::Free(escapedDescription);
nsMemory::Free(escapedError);
nsMemory::Free(escapedUrl);
nsMemory::Free(escapedCharset);
nsMemory::Free(escapedCSSClass);
nsCOMPtr<nsIURI> errorPageURI;
nsresult rv = NS_NewURI(getter_AddRefs(errorPageURI), errorPageUrl);
NS_ENSURE_SUCCESS(rv, rv);
return InternalLoad(errorPageURI, nsnull, nsnull, PR_TRUE, nsnull, nsnull,
nsnull, nsnull, LOAD_ERROR_PAGE,
nsnull, PR_TRUE, nsnull, nsnull);
}
NS_IMETHODIMP
nsDocShell::Reload(PRUint32 aReloadFlags)
{
if (!IsNavigationAllowed()) {
return NS_OK; // JS may not handle returning of an error code
}
nsresult rv;
NS_ASSERTION(((aReloadFlags & 0xf) == 0),
"Reload command not updated to use load flags!");
PRUint32 loadType = MAKE_LOAD_TYPE(LOAD_RELOAD_NORMAL, aReloadFlags);
NS_ENSURE_TRUE(IsValidLoadType(loadType), NS_ERROR_INVALID_ARG);
// Send notifications to the HistoryListener if any, about the impending reload
nsCOMPtr<nsISHistory> rootSH;
rv = GetRootSessionHistory(getter_AddRefs(rootSH));
nsCOMPtr<nsISHistoryInternal> shistInt(do_QueryInterface(rootSH));
PRBool canReload = PR_TRUE;
if (rootSH) {
nsCOMPtr<nsISHistoryListener> listener;
shistInt->GetListener(getter_AddRefs(listener));
if (listener) {
listener->OnHistoryReload(mCurrentURI, aReloadFlags, &canReload);
}
}
if (!canReload)
return NS_OK;
/* If you change this part of code, make sure bug 45297 does not re-occur */
if (mOSHE) {
rv = LoadHistoryEntry(mOSHE, loadType);
}
else if (mLSHE) { // In case a reload happened before the current load is done
rv = LoadHistoryEntry(mLSHE, loadType);
}
else {
nsCOMPtr<nsIDOMDocument> domDoc(do_GetInterface(GetAsSupports(this)));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
nsIPrincipal* principal = nsnull;
nsAutoString contentTypeHint;
if (doc) {
principal = doc->NodePrincipal();
doc->GetContentType(contentTypeHint);
}
rv = InternalLoad(mCurrentURI,
mReferrerURI,
principal,
INTERNAL_LOAD_FLAGS_NONE, // Do not inherit owner from document
nsnull, // No window target
NS_LossyConvertUTF16toASCII(contentTypeHint).get(),
nsnull, // No post data
nsnull, // No headers data
loadType, // Load type
nsnull, // No SHEntry
PR_TRUE,
nsnull, // No nsIDocShell
nsnull); // No nsIRequest
}
return rv;
}
NS_IMETHODIMP
nsDocShell::Stop(PRUint32 aStopFlags)
{
// Revoke any pending event related to content viewer restoration
mRestorePresentationEvent.Revoke();
if (nsIWebNavigation::STOP_CONTENT & aStopFlags) {
// Stop the document loading
if (mContentViewer)
mContentViewer->Stop();
}
if (nsIWebNavigation::STOP_NETWORK & aStopFlags) {
// Suspend any timers that were set for this loader. We'll clear
// them out for good in CreateContentViewer.
if (mRefreshURIList) {
SuspendRefreshURIs();
mSavedRefreshURIList.swap(mRefreshURIList);
mRefreshURIList = nsnull;
}
if (mClassifier) {
mClassifier->Cancel();
mClassifier = nsnull;
}
// XXXbz We could also pass |this| to nsIURILoader::Stop. That will
// just call Stop() on us as an nsIDocumentLoader... We need fewer
// redundant apis!
Stop();
}
PRInt32 n;
PRInt32 count = mChildList.Count();
for (n = 0; n < count; n++) {
nsCOMPtr<nsIWebNavigation> shellAsNav(do_QueryInterface(ChildAt(n)));
if (shellAsNav)
shellAsNav->Stop(aStopFlags);
}
return NS_OK;
}
/*
NS_IMETHODIMP nsDocShell::SetDocument(nsIDOMDocument* aDocument,
const PRUnichar* aContentType)
{
//XXX First Checkin
NS_ERROR("Not Yet Implemented");
return NS_ERROR_FAILURE;
}
*/
NS_IMETHODIMP
nsDocShell::GetDocument(nsIDOMDocument ** aDocument)
{
NS_ENSURE_ARG_POINTER(aDocument);
NS_ENSURE_SUCCESS(EnsureContentViewer(), NS_ERROR_FAILURE);
return mContentViewer->GetDOMDocument(aDocument);
}
NS_IMETHODIMP
nsDocShell::GetCurrentURI(nsIURI ** aURI)
{
NS_ENSURE_ARG_POINTER(aURI);
if (mCurrentURI) {
return NS_EnsureSafeToReturn(mCurrentURI, aURI);
}
*aURI = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetReferringURI(nsIURI ** aURI)
{
NS_ENSURE_ARG_POINTER(aURI);
*aURI = mReferrerURI;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetSessionHistory(nsISHistory * aSessionHistory)
{
NS_ENSURE_TRUE(aSessionHistory, NS_ERROR_FAILURE);
// make sure that we are the root docshell and
// set a handle to root docshell in SH.
nsCOMPtr<nsIDocShellTreeItem> root;
/* Get the root docshell. If *this* is the root docshell
* then save a handle to *this* in SH. SH needs it to do
* traversions thro' its entries
*/
GetSameTypeRootTreeItem(getter_AddRefs(root));
NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
if (root.get() == static_cast<nsIDocShellTreeItem *>(this)) {
mSessionHistory = aSessionHistory;
nsCOMPtr<nsISHistoryInternal>
shPrivate(do_QueryInterface(mSessionHistory));
NS_ENSURE_TRUE(shPrivate, NS_ERROR_FAILURE);
shPrivate->SetRootDocShell(this);
return NS_OK;
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::GetSessionHistory(nsISHistory ** aSessionHistory)
{
NS_ENSURE_ARG_POINTER(aSessionHistory);
*aSessionHistory = mSessionHistory;
NS_IF_ADDREF(*aSessionHistory);
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIWebPageDescriptor
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::LoadPage(nsISupports *aPageDescriptor, PRUint32 aDisplayType)
{
nsCOMPtr<nsISHEntry> shEntryIn(do_QueryInterface(aPageDescriptor));
// Currently, the opaque 'page descriptor' is an nsISHEntry...
if (!shEntryIn) {
return NS_ERROR_INVALID_POINTER;
}
// Now clone shEntryIn, since we might end up modifying it later on, and we
// want a page descriptor to be reusable.
nsCOMPtr<nsISHEntry> shEntry;
nsresult rv = shEntryIn->Clone(getter_AddRefs(shEntry));
NS_ENSURE_SUCCESS(rv, rv);
//
// load the page as view-source
//
if (nsIWebPageDescriptor::DISPLAY_AS_SOURCE == aDisplayType) {
nsCOMPtr<nsIURI> oldUri, newUri;
nsCString spec, newSpec;
// Create a new view-source URI and replace the original.
rv = shEntry->GetURI(getter_AddRefs(oldUri));
if (NS_FAILED(rv))
return rv;
oldUri->GetSpec(spec);
newSpec.AppendLiteral("view-source:");
newSpec.Append(spec);
rv = NS_NewURI(getter_AddRefs(newUri), newSpec);
if (NS_FAILED(rv)) {
return rv;
}
shEntry->SetURI(newUri);
}
rv = LoadHistoryEntry(shEntry, LOAD_HISTORY);
return rv;
}
NS_IMETHODIMP
nsDocShell::GetCurrentDescriptor(nsISupports **aPageDescriptor)
{
NS_PRECONDITION(aPageDescriptor, "Null out param?");
*aPageDescriptor = nsnull;
nsISHEntry* src = mOSHE ? mOSHE : mLSHE;
if (src) {
nsCOMPtr<nsISHEntry> dest;
nsresult rv = src->Clone(getter_AddRefs(dest));
if (NS_FAILED(rv)) {
return rv;
}
// null out inappropriate cloned attributes...
dest->SetParent(nsnull);
dest->SetIsSubFrame(PR_FALSE);
return CallQueryInterface(dest, aPageDescriptor);
}
return NS_ERROR_NOT_AVAILABLE;
}
//*****************************************************************************
// nsDocShell::nsIBaseWindow
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::InitWindow(nativeWindow parentNativeWindow,
nsIWidget * parentWidget, PRInt32 x, PRInt32 y,
PRInt32 cx, PRInt32 cy)
{
NS_ENSURE_ARG(parentWidget); // DocShells must get a widget for a parent
SetParentWidget(parentWidget);
SetPositionAndSize(x, y, cx, cy, PR_FALSE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::Create()
{
NS_ASSERTION(mItemType == typeContent || mItemType == typeChrome,
"Unexpected item type in docshell");
nsresult rv = NS_ERROR_FAILURE;
mPrefs = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
PRBool tmpbool;
rv = mPrefs->GetBoolPref("browser.frames.enabled", &tmpbool);
if (NS_SUCCEEDED(rv))
mAllowSubframes = tmpbool;
if (gValidateOrigin == (PRBool)0xffffffff) {
// Check pref to see if we should prevent frameset spoofing
rv = mPrefs->GetBoolPref("browser.frame.validate_origin", &tmpbool);
if (NS_SUCCEEDED(rv)) {
gValidateOrigin = tmpbool;
} else {
gValidateOrigin = PR_TRUE;
}
}
// Should we use XUL error pages instead of alerts if possible?
rv = mPrefs->GetBoolPref("browser.xul.error_pages.enabled", &tmpbool);
if (NS_SUCCEEDED(rv))
mUseErrorPages = tmpbool;
nsCOMPtr<nsIPrefBranch2> prefs(do_QueryInterface(mPrefs, &rv));
if (NS_SUCCEEDED(rv) && mObserveErrorPages) {
prefs->AddObserver("browser.xul.error_pages.enabled", this, PR_FALSE);
}
nsCOMPtr<nsIObserverService> serv = do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
if (serv) {
const char* msg = mItemType == typeContent ?
NS_WEBNAVIGATION_CREATE : NS_CHROME_WEBNAVIGATION_CREATE;
serv->NotifyObservers(GetAsSupports(this), msg, nsnull);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::Destroy()
{
NS_ASSERTION(mItemType == typeContent || mItemType == typeChrome,
"Unexpected item type in docshell");
if (!mIsBeingDestroyed) {
nsCOMPtr<nsIObserverService> serv =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
if (serv) {
const char* msg = mItemType == typeContent ?
NS_WEBNAVIGATION_DESTROY : NS_CHROME_WEBNAVIGATION_DESTROY;
serv->NotifyObservers(GetAsSupports(this), msg, nsnull);
}
}
mIsBeingDestroyed = PR_TRUE;
// Remove our pref observers
if (mObserveErrorPages) {
nsCOMPtr<nsIPrefBranch2> prefs(do_QueryInterface(mPrefs));
if (prefs) {
prefs->RemoveObserver("browser.xul.error_pages.enabled", this);
mObserveErrorPages = PR_FALSE;
}
}
// Make sure to blow away our mLoadingURI just in case. No loads
// from inside this pagehide.
mLoadingURI = nsnull;
// Fire unload event before we blow anything away.
(void) FirePageHideNotification(PR_TRUE);
// Note: mContentListener can be null if Init() failed and we're being
// called from the destructor.
if (mContentListener) {
mContentListener->DropDocShellreference();
mContentListener->SetParentContentListener(nsnull);
// Note that we do NOT set mContentListener to null here; that
// way if someone tries to do a load in us after this point
// the nsDSURIContentListener will block it. All of which
// means that we should do this before calling Stop(), of
// course.
}
// Stop any URLs that are currently being loaded...
Stop(nsIWebNavigation::STOP_ALL);
delete mEditorData;
mEditorData = 0;
mTransferableHookData = nsnull;
// Save the state of the current document, before destroying the window.
// This is needed to capture the state of a frameset when the new document
// causes the frameset to be destroyed...
PersistLayoutHistoryState();
// Remove this docshell from its parent's child list
nsCOMPtr<nsIDocShellTreeItem> docShellParentAsItem =
do_QueryInterface(GetAsSupports(mParent));
if (docShellParentAsItem)
docShellParentAsItem->RemoveChild(this);
if (mContentViewer) {
mContentViewer->Close(nsnull);
mContentViewer->Destroy();
mContentViewer = nsnull;
}
nsDocLoader::Destroy();
mParentWidget = nsnull;
mCurrentURI = nsnull;
if (mScriptGlobal) {
nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(mScriptGlobal));
win->SetDocShell(nsnull);
mScriptGlobal = nsnull;
}
mSessionHistory = nsnull;
SetTreeOwner(nsnull);
// required to break ref cycle
mSecurityUI = nsnull;
// Cancel any timers that were set for this docshell; this is needed
// to break the cycle between us and the timers.
CancelRefreshURITimers();
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetPosition(PRInt32 x, PRInt32 y)
{
mBounds.x = x;
mBounds.y = y;
if (mContentViewer)
NS_ENSURE_SUCCESS(mContentViewer->Move(x, y), NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetPosition(PRInt32 * aX, PRInt32 * aY)
{
PRInt32 dummyHolder;
return GetPositionAndSize(aX, aY, &dummyHolder, &dummyHolder);
}
NS_IMETHODIMP
nsDocShell::SetSize(PRInt32 aCX, PRInt32 aCY, PRBool aRepaint)
{
PRInt32 x = 0, y = 0;
GetPosition(&x, &y);
return SetPositionAndSize(x, y, aCX, aCY, aRepaint);
}
NS_IMETHODIMP
nsDocShell::GetSize(PRInt32 * aCX, PRInt32 * aCY)
{
PRInt32 dummyHolder;
return GetPositionAndSize(&dummyHolder, &dummyHolder, aCX, aCY);
}
NS_IMETHODIMP
nsDocShell::SetPositionAndSize(PRInt32 x, PRInt32 y, PRInt32 cx,
PRInt32 cy, PRBool fRepaint)
{
mBounds.x = x;
mBounds.y = y;
mBounds.width = cx;
mBounds.height = cy;
// Hold strong ref, since SetBounds can make us null out mContentViewer
nsCOMPtr<nsIContentViewer> viewer = mContentViewer;
if (viewer) {
//XXX Border figured in here or is that handled elsewhere?
NS_ENSURE_SUCCESS(viewer->SetBounds(mBounds), NS_ERROR_FAILURE);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetPositionAndSize(PRInt32 * x, PRInt32 * y, PRInt32 * cx,
PRInt32 * cy)
{
// We should really consider just getting this information from
// our window instead of duplicating the storage and code...
nsCOMPtr<nsIDOMDocument> document(do_GetInterface(GetAsSupports(mParent)));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(document));
if (doc) {
doc->FlushPendingNotifications(Flush_Layout);
}
DoGetPositionAndSize(x, y, cx, cy);
return NS_OK;
}
void
nsDocShell::DoGetPositionAndSize(PRInt32 * x, PRInt32 * y, PRInt32 * cx,
PRInt32 * cy)
{
if (x)
*x = mBounds.x;
if (y)
*y = mBounds.y;
if (cx)
*cx = mBounds.width;
if (cy)
*cy = mBounds.height;
}
NS_IMETHODIMP
nsDocShell::Repaint(PRBool aForce)
{
nsCOMPtr<nsPresContext> context;
GetPresContext(getter_AddRefs(context));
NS_ENSURE_TRUE(context, NS_ERROR_FAILURE);
nsIViewManager* viewManager = context->GetViewManager();
NS_ENSURE_TRUE(viewManager, NS_ERROR_FAILURE);
// what about aForce ?
NS_ENSURE_SUCCESS(viewManager->UpdateAllViews(0), NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetParentWidget(nsIWidget ** parentWidget)
{
NS_ENSURE_ARG_POINTER(parentWidget);
*parentWidget = mParentWidget;
NS_IF_ADDREF(*parentWidget);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetParentWidget(nsIWidget * aParentWidget)
{
mParentWidget = aParentWidget;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetParentNativeWindow(nativeWindow * parentNativeWindow)
{
NS_ENSURE_ARG_POINTER(parentNativeWindow);
if (mParentWidget)
*parentNativeWindow = mParentWidget->GetNativeData(NS_NATIVE_WIDGET);
else
*parentNativeWindow = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetParentNativeWindow(nativeWindow parentNativeWindow)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShell::GetVisibility(PRBool * aVisibility)
{
NS_ENSURE_ARG_POINTER(aVisibility);
if (!mContentViewer) {
*aVisibility = PR_FALSE;
return NS_OK;
}
// get the pres shell
nsCOMPtr<nsIPresShell> presShell;
NS_ENSURE_SUCCESS(GetPresShell(getter_AddRefs(presShell)),
NS_ERROR_FAILURE);
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
// get the view manager
nsIViewManager* vm = presShell->GetViewManager();
NS_ENSURE_TRUE(vm, NS_ERROR_FAILURE);
// get the root view
nsIView *view = nsnull; // views are not ref counted
NS_ENSURE_SUCCESS(vm->GetRootView(view), NS_ERROR_FAILURE);
NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
// if our root view is hidden, we are not visible
if (view->GetVisibility() == nsViewVisibility_kHide) {
*aVisibility = PR_FALSE;
return NS_OK;
}
// otherwise, we must walk up the document and view trees checking
// for a hidden view.
nsCOMPtr<nsIDocShellTreeItem> treeItem = this;
nsCOMPtr<nsIDocShellTreeItem> parentItem;
treeItem->GetParent(getter_AddRefs(parentItem));
while (parentItem) {
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(treeItem));
docShell->GetPresShell(getter_AddRefs(presShell));
nsCOMPtr<nsIDocShell> parentDS = do_QueryInterface(parentItem);
nsCOMPtr<nsIPresShell> pPresShell;
parentDS->GetPresShell(getter_AddRefs(pPresShell));
// Null-check for crash in bug 267804
if (!pPresShell) {
NS_NOTREACHED("docshell has null pres shell");
*aVisibility = PR_FALSE;
return NS_OK;
}
nsIContent *shellContent =
pPresShell->GetDocument()->FindContentForSubDocument(presShell->GetDocument());
NS_ASSERTION(shellContent, "subshell not in the map");
nsIFrame* frame = pPresShell->GetPrimaryFrameFor(shellContent);
if (frame && !frame->AreAncestorViewsVisible()) {
*aVisibility = PR_FALSE;
return NS_OK;
}
treeItem = parentItem;
treeItem->GetParent(getter_AddRefs(parentItem));
}
nsCOMPtr<nsIBaseWindow>
treeOwnerAsWin(do_QueryInterface(mTreeOwner));
if (!treeOwnerAsWin) {
*aVisibility = PR_TRUE;
return NS_OK;
}
// Check with the tree owner as well to give embedders a chance to
// expose visibility as well.
return treeOwnerAsWin->GetVisibility(aVisibility);
}
NS_IMETHODIMP
nsDocShell::SetVisibility(PRBool aVisibility)
{
if (!mContentViewer)
return NS_OK;
if (aVisibility) {
mContentViewer->Show();
}
else {
mContentViewer->Hide();
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetEnabled(PRBool *aEnabled)
{
NS_ENSURE_ARG_POINTER(aEnabled);
*aEnabled = PR_TRUE;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShell::SetEnabled(PRBool aEnabled)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShell::GetBlurSuppression(PRBool *aBlurSuppression)
{
NS_ENSURE_ARG_POINTER(aBlurSuppression);
*aBlurSuppression = PR_FALSE;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShell::SetBlurSuppression(PRBool aBlurSuppression)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShell::GetMainWidget(nsIWidget ** aMainWidget)
{
// We don't create our own widget, so simply return the parent one.
return GetParentWidget(aMainWidget);
}
NS_IMETHODIMP
nsDocShell::SetFocus()
{
#ifdef DEBUG_DOCSHELL_FOCUS
printf("nsDocShell::SetFocus %p\n", (void*)this);
#endif
// Tell itself (and the DocShellFocusController) who has focus
// this way focus gets removed from the currently focused DocShell
SetHasFocus(PR_TRUE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetTitle(PRUnichar ** aTitle)
{
NS_ENSURE_ARG_POINTER(aTitle);
*aTitle = ToNewUnicode(mTitle);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetTitle(const PRUnichar * aTitle)
{
// Store local title
mTitle = aTitle;
nsCOMPtr<nsIDocShellTreeItem> parent;
GetSameTypeParent(getter_AddRefs(parent));
// When title is set on the top object it should then be passed to the
// tree owner.
if (!parent) {
nsCOMPtr<nsIBaseWindow>
treeOwnerAsWin(do_QueryInterface(mTreeOwner));
if (treeOwnerAsWin)
treeOwnerAsWin->SetTitle(aTitle);
}
if (mGlobalHistory && mCurrentURI && mLoadType != LOAD_ERROR_PAGE) {
mGlobalHistory->SetPageTitle(mCurrentURI, nsDependentString(aTitle));
}
// Update SessionHistory with the document's title. If the
// page was loaded from history or the page bypassed history,
// there is no need to update the title. There is no need to
// go to mSessionHistory to update the title. Setting it in mOSHE
// would suffice.
if (mOSHE && (mLoadType != LOAD_BYPASS_HISTORY) &&
(mLoadType != LOAD_HISTORY) && (mLoadType != LOAD_ERROR_PAGE)) {
mOSHE->SetTitle(mTitle);
}
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIScrollable
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::GetCurScrollPos(PRInt32 scrollOrientation, PRInt32 * curPos)
{
NS_ENSURE_ARG_POINTER(curPos);
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView) {
return NS_ERROR_FAILURE;
}
nscoord x, y;
NS_ENSURE_SUCCESS(scrollView->GetScrollPosition(x, y), NS_ERROR_FAILURE);
switch (scrollOrientation) {
case ScrollOrientation_X:
*curPos = x;
return NS_OK;
case ScrollOrientation_Y:
*curPos = y;
return NS_OK;
default:
NS_ENSURE_TRUE(PR_FALSE, NS_ERROR_INVALID_ARG);
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::SetCurScrollPos(PRInt32 scrollOrientation, PRInt32 curPos)
{
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView) {
return NS_ERROR_FAILURE;
}
PRInt32 other;
PRInt32 x;
PRInt32 y;
GetCurScrollPos(scrollOrientation, &other);
switch (scrollOrientation) {
case ScrollOrientation_X:
x = curPos;
y = other;
break;
case ScrollOrientation_Y:
x = other;
y = curPos;
break;
default:
NS_ENSURE_TRUE(PR_FALSE, NS_ERROR_INVALID_ARG);
x = 0;
y = 0; // fix compiler warning, not actually executed
}
NS_ENSURE_SUCCESS(scrollView->ScrollTo(x, y, NS_VMREFRESH_IMMEDIATE),
NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetCurScrollPosEx(PRInt32 curHorizontalPos, PRInt32 curVerticalPos)
{
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView) {
return NS_ERROR_FAILURE;
}
NS_ENSURE_SUCCESS(scrollView->ScrollTo(curHorizontalPos, curVerticalPos,
NS_VMREFRESH_IMMEDIATE),
NS_ERROR_FAILURE);
return NS_OK;
}
// XXX This is wrong
NS_IMETHODIMP
nsDocShell::GetScrollRange(PRInt32 scrollOrientation,
PRInt32 * minPos, PRInt32 * maxPos)
{
NS_ENSURE_ARG_POINTER(minPos && maxPos);
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView) {
return NS_ERROR_FAILURE;
}
PRInt32 cx;
PRInt32 cy;
NS_ENSURE_SUCCESS(scrollView->GetContainerSize(&cx, &cy), NS_ERROR_FAILURE);
*minPos = 0;
switch (scrollOrientation) {
case ScrollOrientation_X:
*maxPos = cx;
return NS_OK;
case ScrollOrientation_Y:
*maxPos = cy;
return NS_OK;
default:
NS_ENSURE_TRUE(PR_FALSE, NS_ERROR_INVALID_ARG);
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::SetScrollRange(PRInt32 scrollOrientation,
PRInt32 minPos, PRInt32 maxPos)
{
//XXX First Check
/*
Retrieves or Sets the valid ranges for the thumb. When maxPos is set to
something less than the current thumb position, curPos is set = to maxPos.
@return NS_OK - Setting or Getting completed successfully.
NS_ERROR_INVALID_ARG - returned when curPos is not within the
minPos and maxPos.
*/
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::SetScrollRangeEx(PRInt32 minHorizontalPos,
PRInt32 maxHorizontalPos, PRInt32 minVerticalPos,
PRInt32 maxVerticalPos)
{
//XXX First Check
/*
Retrieves or Sets the valid ranges for the thumb. When maxPos is set to
something less than the current thumb position, curPos is set = to maxPos.
@return NS_OK - Setting or Getting completed successfully.
NS_ERROR_INVALID_ARG - returned when curPos is not within the
minPos and maxPos.
*/
return NS_ERROR_FAILURE;
}
// This returns setting for all documents in this webshell
NS_IMETHODIMP
nsDocShell::GetDefaultScrollbarPreferences(PRInt32 scrollOrientation,
PRInt32 * scrollbarPref)
{
NS_ENSURE_ARG_POINTER(scrollbarPref);
switch (scrollOrientation) {
case ScrollOrientation_X:
*scrollbarPref = mDefaultScrollbarPref.x;
return NS_OK;
case ScrollOrientation_Y:
*scrollbarPref = mDefaultScrollbarPref.y;
return NS_OK;
default:
NS_ENSURE_TRUE(PR_FALSE, NS_ERROR_INVALID_ARG);
}
return NS_ERROR_FAILURE;
}
// Set scrolling preference for all documents in this shell
//
// There are three possible values stored in the shell:
// 1) nsIScrollable::Scrollbar_Never = no scrollbar
// 2) nsIScrollable::Scrollbar_Auto = scrollbar appears if the document
// being displayed would normally have scrollbar
// 3) nsIScrollable::Scrollbar_Always = scrollbar always appears
//
// One important client is nsHTMLFrameInnerFrame::CreateWebShell()
NS_IMETHODIMP
nsDocShell::SetDefaultScrollbarPreferences(PRInt32 scrollOrientation,
PRInt32 scrollbarPref)
{
switch (scrollOrientation) {
case ScrollOrientation_X:
mDefaultScrollbarPref.x = scrollbarPref;
return NS_OK;
case ScrollOrientation_Y:
mDefaultScrollbarPref.y = scrollbarPref;
return NS_OK;
default:
NS_ENSURE_TRUE(PR_FALSE, NS_ERROR_INVALID_ARG);
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::GetScrollbarVisibility(PRBool * verticalVisible,
PRBool * horizontalVisible)
{
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView)
return NS_ERROR_FAILURE;
// We should now call nsLayoutUtils::GetScrollableFrameFor,
// but we can't because of stupid linkage!
nsIFrame* scrollFrame =
static_cast<nsIFrame*>(scrollView->View()->GetParent()->GetClientData());
if (!scrollFrame)
return NS_ERROR_FAILURE;
nsIScrollableFrame* scrollable = nsnull;
CallQueryInterface(scrollFrame, &scrollable);
if (!scrollable)
return NS_ERROR_FAILURE;
nsMargin scrollbars = scrollable->GetActualScrollbarSizes();
if (verticalVisible)
*verticalVisible = scrollbars.left != 0 || scrollbars.right != 0;
if (horizontalVisible)
*horizontalVisible = scrollbars.top != 0 || scrollbars.bottom != 0;
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsITextScroll
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::ScrollByLines(PRInt32 numLines)
{
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView) {
return NS_ERROR_FAILURE;
}
NS_ENSURE_SUCCESS(scrollView->ScrollByLines(0, numLines), NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::ScrollByPages(PRInt32 numPages)
{
nsIScrollableView* scrollView;
NS_ENSURE_SUCCESS(GetRootScrollableView(&scrollView),
NS_ERROR_FAILURE);
if (!scrollView) {
return NS_ERROR_FAILURE;
}
NS_ENSURE_SUCCESS(scrollView->ScrollByPages(0, numPages), NS_ERROR_FAILURE);
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIScriptGlobalObjectOwner
//*****************************************************************************
nsIScriptGlobalObject*
nsDocShell::GetScriptGlobalObject()
{
NS_ENSURE_SUCCESS(EnsureScriptEnvironment(), nsnull);
return mScriptGlobal;
}
//*****************************************************************************
// nsDocShell::nsIRefreshURI
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::RefreshURI(nsIURI * aURI, PRInt32 aDelay, PRBool aRepeat,
PRBool aMetaRefresh)
{
NS_ENSURE_ARG(aURI);
/* Check if Meta refresh/redirects are permitted. Some
* embedded applications may not want to do this.
* Must do this before sending out NOTIFY_REFRESH events
* because listeners may have side effects (e.g. displaying a
* button to manually trigger the refresh later).
*/
PRBool allowRedirects = PR_TRUE;
GetAllowMetaRedirects(&allowRedirects);
if (!allowRedirects)
return NS_OK;
// If any web progress listeners are listening for NOTIFY_REFRESH events,
// give them a chance to block this refresh.
PRBool sameURI;
nsresult rv = aURI->Equals(mCurrentURI, &sameURI);
if (NS_FAILED(rv))
sameURI = PR_FALSE;
if (!RefreshAttempted(this, aURI, aDelay, sameURI))
return NS_OK;
nsRefreshTimer *refreshTimer = new nsRefreshTimer();
NS_ENSURE_TRUE(refreshTimer, NS_ERROR_OUT_OF_MEMORY);
PRUint32 busyFlags = 0;
GetBusyFlags(&busyFlags);
nsCOMPtr<nsISupports> dataRef = refreshTimer; // Get the ref count to 1
refreshTimer->mDocShell = this;
refreshTimer->mURI = aURI;
refreshTimer->mDelay = aDelay;
refreshTimer->mRepeat = aRepeat;
refreshTimer->mMetaRefresh = aMetaRefresh;
if (!mRefreshURIList) {
NS_ENSURE_SUCCESS(NS_NewISupportsArray(getter_AddRefs(mRefreshURIList)),
NS_ERROR_FAILURE);
}
if (busyFlags & BUSY_FLAGS_BUSY) {
// We are busy loading another page. Don't create the
// timer right now. Instead queue up the request and trigger the
// timer in EndPageLoad().
mRefreshURIList->AppendElement(refreshTimer);
}
else {
// There is no page loading going on right now. Create the
// timer and fire it right away.
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1");
NS_ENSURE_TRUE(timer, NS_ERROR_FAILURE);
mRefreshURIList->AppendElement(timer); // owning timer ref
timer->InitWithCallback(refreshTimer, aDelay, nsITimer::TYPE_ONE_SHOT);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::ForceRefreshURI(nsIURI * aURI,
PRInt32 aDelay,
PRBool aMetaRefresh)
{
NS_ENSURE_ARG(aURI);
nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
CreateLoadInfo(getter_AddRefs(loadInfo));
NS_ENSURE_TRUE(loadInfo, NS_ERROR_OUT_OF_MEMORY);
/* We do need to pass in a referrer, but we don't want it to
* be sent to the server.
*/
loadInfo->SetSendReferrer(PR_FALSE);
/* for most refreshes the current URI is an appropriate
* internal referrer
*/
loadInfo->SetReferrer(mCurrentURI);
/* Check if this META refresh causes a redirection
* to another site.
*/
PRBool equalUri = PR_FALSE;
nsresult rv = aURI->Equals(mCurrentURI, &equalUri);
if (NS_SUCCEEDED(rv) && (!equalUri) && aMetaRefresh) {
/* It is a META refresh based redirection. Now check if it happened
within the threshold time we have in mind(15000 ms as defined by
REFRESH_REDIRECT_TIMER). If so, pass a REPLACE flag to LoadURI().
*/
if (aDelay <= REFRESH_REDIRECT_TIMER) {
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadNormalReplace);
/* for redirects we mimic HTTP, which passes the
* original referrer
*/
nsCOMPtr<nsIURI> internalReferrer;
GetReferringURI(getter_AddRefs(internalReferrer));
if (internalReferrer) {
loadInfo->SetReferrer(internalReferrer);
}
}
else
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadRefresh);
/*
* LoadURI(...) will cancel all refresh timers... This causes the
* Timer and its refreshData instance to be released...
*/
LoadURI(aURI, loadInfo, nsIWebNavigation::LOAD_FLAGS_NONE, PR_TRUE);
return NS_OK;
}
else
loadInfo->SetLoadType(nsIDocShellLoadInfo::loadRefresh);
LoadURI(aURI, loadInfo, nsIWebNavigation::LOAD_FLAGS_NONE, PR_TRUE);
return NS_OK;
}
nsresult
nsDocShell::SetupRefreshURIFromHeader(nsIURI * aBaseURI,
const nsACString & aHeader)
{
// Refresh headers are parsed with the following format in mind
// <META HTTP-EQUIV=REFRESH CONTENT="5; URL=http://uri">
// By the time we are here, the following is true:
// header = "REFRESH"
// content = "5; URL=http://uri" // note the URL attribute is
// optional, if it is absent, the currently loaded url is used.
// Also note that the seconds and URL separator can be either
// a ';' or a ','. The ',' separator should be illegal but CNN
// is using it.
//
// We need to handle the following strings, where
// - X is a set of digits
// - URI is either a relative or absolute URI
//
// Note that URI should start with "url=" but we allow omission
//
// "" || ";" || ","
// empty string. use the currently loaded URI
// and refresh immediately.
// "X" || "X;" || "X,"
// Refresh the currently loaded URI in X seconds.
// "X; URI" || "X, URI"
// Refresh using URI as the destination in X seconds.
// "URI" || "; URI" || ", URI"
// Refresh immediately using URI as the destination.
//
// Currently, anything immediately following the URI, if
// separated by any char in the set "'\"\t\r\n " will be
// ignored. So "10; url=go.html ; foo=bar" will work,
// and so will "10; url='go.html'; foo=bar". However,
// "10; url=go.html; foo=bar" will result in the uri
// "go.html;" since ';' and ',' are valid uri characters.
//
// Note that we need to remove any tokens wrapping the URI.
// These tokens currently include spaces, double and single
// quotes.
// when done, seconds is 0 or the given number of seconds
// uriAttrib is empty or the URI specified
nsCAutoString uriAttrib;
PRInt32 seconds = 0;
PRBool specifiesSeconds = PR_FALSE;
nsACString::const_iterator iter, tokenStart, doneIterating;
aHeader.BeginReading(iter);
aHeader.EndReading(doneIterating);
// skip leading whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
tokenStart = iter;
// skip leading + and -
if (iter != doneIterating && (*iter == '-' || *iter == '+'))
++iter;
// parse number
while (iter != doneIterating && (*iter >= '0' && *iter <= '9')) {
seconds = seconds * 10 + (*iter - '0');
specifiesSeconds = PR_TRUE;
++iter;
}
if (iter != doneIterating) {
// if we started with a '-', number is negative
if (*tokenStart == '-')
seconds = -seconds;
// skip to next ';' or ','
nsACString::const_iterator iterAfterDigit = iter;
while (iter != doneIterating && !(*iter == ';' || *iter == ','))
{
if (specifiesSeconds)
{
// Non-whitespace characters here mean that the string is
// malformed but tolerate sites that specify a decimal point,
// even though meta refresh only works on whole seconds.
if (iter == iterAfterDigit &&
!nsCRT::IsAsciiSpace(*iter) && *iter != '.')
{
// The characters between the seconds and the next
// section are just garbage!
// e.g. content="2a0z+,URL=http://www.mozilla.org/"
// Just ignore this redirect.
return NS_ERROR_FAILURE;
}
else if (nsCRT::IsAsciiSpace(*iter))
{
// We've had at least one whitespace so tolerate the mistake
// and drop through.
// e.g. content="10 foo"
++iter;
break;
}
}
++iter;
}
// skip any remaining whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
// skip ';' or ','
if (iter != doneIterating && (*iter == ';' || *iter == ',')) {
++iter;
}
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
}
// possible start of URI
tokenStart = iter;
// skip "url = " to real start of URI
if (iter != doneIterating && (*iter == 'u' || *iter == 'U')) {
++iter;
if (iter != doneIterating && (*iter == 'r' || *iter == 'R')) {
++iter;
if (iter != doneIterating && (*iter == 'l' || *iter == 'L')) {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
if (iter != doneIterating && *iter == '=') {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
// found real start of URI
tokenStart = iter;
}
}
}
}
// skip a leading '"' or '\''.
PRBool isQuotedURI = PR_FALSE;
if (tokenStart != doneIterating && (*tokenStart == '"' || *tokenStart == '\''))
{
isQuotedURI = PR_TRUE;
++tokenStart;
}
// set iter to start of URI
iter = tokenStart;
// tokenStart here points to the beginning of URI
// grab the rest of the URI
while (iter != doneIterating)
{
if (isQuotedURI && (*iter == '"' || *iter == '\''))
break;
++iter;
}
// move iter one back if the last character is a '"' or '\''
if (iter != tokenStart && isQuotedURI) {
--iter;
if (!(*iter == '"' || *iter == '\''))
++iter;
}
// URI is whatever's contained from tokenStart to iter.
// note: if tokenStart == doneIterating, so is iter.
nsresult rv = NS_OK;
nsCOMPtr<nsIURI> uri;
PRBool specifiesURI = PR_FALSE;
if (tokenStart == iter) {
uri = aBaseURI;
}
else {
uriAttrib = Substring(tokenStart, iter);
// NS_NewURI takes care of any whitespace surrounding the URL
rv = NS_NewURI(getter_AddRefs(uri), uriAttrib, nsnull, aBaseURI);
specifiesURI = PR_TRUE;
}
// No URI or seconds were specified
if (!specifiesSeconds && !specifiesURI)
{
// Do nothing because the alternative is to spin around in a refresh
// loop forever!
return NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIScriptSecurityManager>
securityManager(do_GetService
(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv)) {
rv = securityManager->
CheckLoadURI(aBaseURI, uri,
nsIScriptSecurityManager::
LOAD_IS_AUTOMATIC_DOCUMENT_REPLACEMENT);
if (NS_SUCCEEDED(rv)) {
// Since we can't travel back in time yet, just pretend
// negative numbers do nothing at all.
if (seconds < 0)
return NS_ERROR_FAILURE;
rv = RefreshURI(uri, seconds * 1000, PR_FALSE, PR_TRUE);
}
}
}
return rv;
}
NS_IMETHODIMP nsDocShell::SetupRefreshURI(nsIChannel * aChannel)
{
nsresult rv;
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel, &rv));
if (NS_SUCCEEDED(rv)) {
nsCAutoString refreshHeader;
rv = httpChannel->GetResponseHeader(NS_LITERAL_CSTRING("refresh"),
refreshHeader);
if (!refreshHeader.IsEmpty()) {
SetupReferrerFromChannel(aChannel);
rv = SetupRefreshURIFromHeader(mCurrentURI, refreshHeader);
if (NS_SUCCEEDED(rv)) {
return NS_REFRESHURI_HEADER_FOUND;
}
}
}
return rv;
}
static void
DoCancelRefreshURITimers(nsISupportsArray* aTimerList)
{
if (!aTimerList)
return;
PRUint32 n=0;
aTimerList->Count(&n);
while (n) {
nsCOMPtr<nsITimer> timer(do_QueryElementAt(aTimerList, --n));
aTimerList->RemoveElementAt(n); // bye bye owning timer ref
if (timer)
timer->Cancel();
}
}
NS_IMETHODIMP
nsDocShell::CancelRefreshURITimers()
{
DoCancelRefreshURITimers(mRefreshURIList);
DoCancelRefreshURITimers(mSavedRefreshURIList);
mRefreshURIList = nsnull;
mSavedRefreshURIList = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetRefreshPending(PRBool* _retval)
{
if (!mRefreshURIList) {
*_retval = PR_FALSE;
return NS_OK;
}
PRUint32 count;
nsresult rv = mRefreshURIList->Count(&count);
if (NS_SUCCEEDED(rv))
*_retval = (count != 0);
return rv;
}
NS_IMETHODIMP
nsDocShell::SuspendRefreshURIs()
{
if (mRefreshURIList) {
PRUint32 n = 0;
mRefreshURIList->Count(&n);
for (PRUint32 i = 0; i < n; ++i) {
nsCOMPtr<nsITimer> timer = do_QueryElementAt(mRefreshURIList, i);
if (!timer)
continue; // this must be a nsRefreshURI already
// Replace this timer object with a nsRefreshTimer object.
nsCOMPtr<nsITimerCallback> callback;
timer->GetCallback(getter_AddRefs(callback));
timer->Cancel();
nsCOMPtr<nsITimerCallback> rt = do_QueryInterface(callback);
NS_ASSERTION(rt, "RefreshURIList timer callbacks should only be RefreshTimer objects");
mRefreshURIList->ReplaceElementAt(rt, i);
}
}
// Suspend refresh URIs for our child shells as well.
PRInt32 n = mChildList.Count();
for (PRInt32 i = 0; i < n; ++i) {
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(ChildAt(i));
if (shell)
shell->SuspendRefreshURIs();
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::ResumeRefreshURIs()
{
RefreshURIFromQueue();
// Resume refresh URIs for our child shells as well.
PRInt32 n = mChildList.Count();
for (PRInt32 i = 0; i < n; ++i) {
nsCOMPtr<nsIDocShell> shell = do_QueryInterface(ChildAt(i));
if (shell)
shell->ResumeRefreshURIs();
}
return NS_OK;
}
nsresult
nsDocShell::RefreshURIFromQueue()
{
if (!mRefreshURIList)
return NS_OK;
PRUint32 n = 0;
mRefreshURIList->Count(&n);
while (n) {
nsCOMPtr<nsISupports> element;
mRefreshURIList->GetElementAt(--n, getter_AddRefs(element));
nsCOMPtr<nsITimerCallback> refreshInfo(do_QueryInterface(element));
if (refreshInfo) {
// This is the nsRefreshTimer object, waiting to be
// setup in a timer object and fired.
// Create the timer and trigger it.
PRUint32 delay = static_cast<nsRefreshTimer*>(static_cast<nsITimerCallback*>(refreshInfo))->GetDelay();
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1");
if (timer) {
// Replace the nsRefreshTimer element in the queue with
// its corresponding timer object, so that in case another
// load comes through before the timer can go off, the timer will
// get cancelled in CancelRefreshURITimer()
mRefreshURIList->ReplaceElementAt(timer, n);
timer->InitWithCallback(refreshInfo, delay, nsITimer::TYPE_ONE_SHOT);
}
}
} // while
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIContentViewerContainer
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::Embed(nsIContentViewer * aContentViewer,
const char *aCommand, nsISupports * aExtraInfo)
{
// Save the LayoutHistoryState of the previous document, before
// setting up new document
PersistLayoutHistoryState();
nsresult rv = SetupNewViewer(aContentViewer);
// If we are loading a wyciwyg url from history, change the base URI for
// the document to the original http url that created the document.write().
// This makes sure that all relative urls in a document.written page loaded
// via history work properly.
if (mCurrentURI &&
(mLoadType & LOAD_CMD_HISTORY ||
mLoadType == LOAD_RELOAD_NORMAL ||
mLoadType == LOAD_RELOAD_CHARSET_CHANGE)){
PRBool isWyciwyg = PR_FALSE;
// Check if the url is wyciwyg
rv = mCurrentURI->SchemeIs("wyciwyg", &isWyciwyg);
if (isWyciwyg && NS_SUCCEEDED(rv))
SetBaseUrlForWyciwyg(aContentViewer);
}
// XXX What if SetupNewViewer fails?
if (mLSHE)
SetHistoryEntry(&mOSHE, mLSHE);
PRBool updateHistory = PR_TRUE;
// Determine if this type of load should update history
switch (mLoadType) {
case LOAD_NORMAL_REPLACE:
case LOAD_STOP_CONTENT_AND_REPLACE:
case LOAD_RELOAD_BYPASS_CACHE:
case LOAD_RELOAD_BYPASS_PROXY:
case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
updateHistory = PR_FALSE;
break;
default:
break;
}
if (!updateHistory)
SetLayoutHistoryState(nsnull);
return NS_OK;
}
/* void setIsPrinting (in boolean aIsPrinting); */
NS_IMETHODIMP
nsDocShell::SetIsPrinting(PRBool aIsPrinting)
{
mIsPrintingOrPP = aIsPrinting;
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIWebProgressListener
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::OnProgressChange(nsIWebProgress * aProgress,
nsIRequest * aRequest,
PRInt32 aCurSelfProgress,
PRInt32 aMaxSelfProgress,
PRInt32 aCurTotalProgress,
PRInt32 aMaxTotalProgress)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::OnStateChange(nsIWebProgress * aProgress, nsIRequest * aRequest,
PRUint32 aStateFlags, nsresult aStatus)
{
nsresult rv;
// Update the busy cursor
if ((~aStateFlags & (STATE_START | STATE_IS_NETWORK)) == 0) {
nsCOMPtr<nsIWyciwygChannel> wcwgChannel(do_QueryInterface(aRequest));
nsCOMPtr<nsIWebProgress> webProgress =
do_QueryInterface(GetAsSupports(this));
// Was the wyciwyg document loaded on this docshell?
if (wcwgChannel && !mLSHE && (mItemType == typeContent) && aProgress == webProgress.get()) {
nsCOMPtr<nsIURI> uri;
wcwgChannel->GetURI(getter_AddRefs(uri));
PRBool equalUri = PR_TRUE;
// Store the wyciwyg url in session history, only if it is
// being loaded fresh for the first time. We don't want
// multiple entries for successive loads
if (mCurrentURI &&
NS_SUCCEEDED(uri->Equals(mCurrentURI, &equalUri)) &&
!equalUri) {
// This is a document.write(). Get the made-up url
// from the channel and store it in session history.
rv = AddToSessionHistory(uri, wcwgChannel, getter_AddRefs(mLSHE));
SetCurrentURI(uri, aRequest, PR_TRUE);
// Save history state of the previous page
rv = PersistLayoutHistoryState();
if (mOSHE)
SetHistoryEntry(&mOSHE, mLSHE);
}
}
// Page has begun to load
mBusyFlags = BUSY_FLAGS_BUSY | BUSY_FLAGS_BEFORE_PAGE_LOAD;
nsCOMPtr<nsIWidget> mainWidget;
GetMainWidget(getter_AddRefs(mainWidget));
if (mainWidget) {
mainWidget->SetCursor(eCursor_spinning);
}
}
else if ((~aStateFlags & (STATE_TRANSFERRING | STATE_IS_DOCUMENT)) == 0) {
// Page is loading
mBusyFlags = BUSY_FLAGS_BUSY | BUSY_FLAGS_PAGE_LOADING;
}
else if ((aStateFlags & STATE_STOP) && (aStateFlags & STATE_IS_NETWORK)) {
// Page has finished loading
mBusyFlags = BUSY_FLAGS_NONE;
nsCOMPtr<nsIWidget> mainWidget;
GetMainWidget(getter_AddRefs(mainWidget));
if (mainWidget) {
mainWidget->SetCursor(eCursor_standard);
}
}
if ((~aStateFlags & (STATE_IS_DOCUMENT | STATE_STOP)) == 0) {
nsCOMPtr<nsIWebProgress> webProgress =
do_QueryInterface(GetAsSupports(this));
// Is the document stop notification for this document?
if (aProgress == webProgress.get()) {
nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
EndPageLoad(aProgress, channel, aStatus);
}
}
// note that redirect state changes will go through here as well, but it
// is better to handle those in OnRedirectStateChange where more
// information is available.
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::OnLocationChange(nsIWebProgress * aProgress,
nsIRequest * aRequest, nsIURI * aURI)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
void
nsDocShell::OnRedirectStateChange(nsIChannel* aOldChannel,
nsIChannel* aNewChannel,
PRUint32 aRedirectFlags,
PRUint32 aStateFlags)
{
NS_ASSERTION(aStateFlags & STATE_REDIRECTING,
"Calling OnRedirectStateChange when there is no redirect");
if (!(aStateFlags & STATE_IS_DOCUMENT))
return; // not a toplevel document
// If this load is being checked by the URI classifier, we need to
// query the classifier again for the new URI.
if (mClassifier) {
mClassifier->SetChannel(aNewChannel);
// we call the nsClassifierCallback:Run() from the main loop to
// give the channel a chance to AsyncOpen() the channel before
// we suspend it.
NS_DispatchToCurrentThread(mClassifier);
}
nsCOMPtr<nsIGlobalHistory3> history3(do_QueryInterface(mGlobalHistory));
nsresult result = NS_ERROR_NOT_IMPLEMENTED;
if (history3) {
// notify global history of this redirect
result = history3->AddDocumentRedirect(aOldChannel, aNewChannel,
aRedirectFlags, !IsFrame());
}
if (result == NS_ERROR_NOT_IMPLEMENTED) {
// when there is no GlobalHistory3, or it doesn't implement
// AddToplevelRedirect, we fall back to GlobalHistory2. Just notify
// that the redirecting page was a redirect so it will be link colored
// but not visible.
nsCOMPtr<nsIURI> oldURI;
aOldChannel->GetURI(getter_AddRefs(oldURI));
if (! oldURI)
return; // nothing to tell anybody about
AddToGlobalHistory(oldURI, PR_TRUE, aOldChannel);
}
}
NS_IMETHODIMP
nsDocShell::OnStatusChange(nsIWebProgress * aWebProgress,
nsIRequest * aRequest,
nsresult aStatus, const PRUnichar * aMessage)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::OnSecurityChange(nsIWebProgress * aWebProgress,
nsIRequest * aRequest, PRUint32 state)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
nsresult
nsDocShell::EndPageLoad(nsIWebProgress * aProgress,
nsIChannel * aChannel, nsresult aStatus)
{
//
// one of many safeguards that prevent death and destruction if
// someone is so very very rude as to bring this window down
// during this load handler.
//
nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
// We're done with the URI classifier for this channel
mClassifier = nsnull;
//
// Notify the ContentViewer that the Document has finished loading...
//
// This will cause any OnLoad(...) handlers to fire, if it is a HTML
// document...
//
if (!mEODForCurrentDocument && mContentViewer) {
mIsExecutingOnLoadHandler = PR_TRUE;
mContentViewer->LoadComplete(aStatus);
mIsExecutingOnLoadHandler = PR_FALSE;
mEODForCurrentDocument = PR_TRUE;
// If all documents have completed their loading
// favor native event dispatch priorities
// over performance
if (--gNumberOfDocumentsLoading == 0) {
// Hint to use normal native event dispatch priorities
FavorPerformanceHint(PR_FALSE, NS_EVENT_STARVATION_DELAY_HINT);
}
}
/* Check if the httpChannel has any cache-control related response headers,
* like no-store, no-cache. If so, update SHEntry so that
* when a user goes back/forward to this page, we appropriately do
* form value restoration or load from server.
*/
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
if (!httpChannel) // HttpChannel could be hiding underneath a Multipart channel.
GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
if (httpChannel) {
// figure out if SH should be saving layout state.
PRBool discardLayoutState = ShouldDiscardLayoutState(httpChannel);
if (mLSHE && discardLayoutState && (mLoadType & LOAD_CMD_NORMAL) &&
(mLoadType != LOAD_BYPASS_HISTORY) && (mLoadType != LOAD_ERROR_PAGE))
mLSHE->SetSaveLayoutStateFlag(PR_FALSE);
}
// Clear mLSHE after calling the onLoadHandlers. This way, if the
// onLoadHandler tries to load something different in
// itself or one of its children, we can deal with it appropriately.
if (mLSHE) {
mLSHE->SetLoadType(nsIDocShellLoadInfo::loadHistory);
// Clear the mLSHE reference to indicate document loading is done one
// way or another.
SetHistoryEntry(&mLSHE, nsnull);
}
// if there's a refresh header in the channel, this method
// will set it up for us.
RefreshURIFromQueue();
return NS_OK;
}
//*****************************************************************************
// nsDocShell: Content Viewer Management
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::EnsureContentViewer()
{
if (mContentViewer)
return NS_OK;
if (mIsBeingDestroyed)
return NS_ERROR_FAILURE;
nsIPrincipal* principal = nsnull;
nsCOMPtr<nsPIDOMWindow> piDOMWindow(do_QueryInterface(mScriptGlobal));
if (piDOMWindow) {
principal = piDOMWindow->GetOpenerScriptPrincipal();
}
if (!principal) {
principal = GetInheritedPrincipal(PR_FALSE);
}
nsresult rv = CreateAboutBlankContentViewer(principal);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIDOMDocument> domDoc;
mContentViewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
NS_ASSERTION(doc,
"Should have doc if CreateAboutBlankContentViewer "
"succeeded!");
doc->SetIsInitialDocument(PR_TRUE);
}
return rv;
}
nsresult
nsDocShell::CreateAboutBlankContentViewer(nsIPrincipal* aPrincipal)
{
nsCOMPtr<nsIDocument> blankDoc;
nsCOMPtr<nsIContentViewer> viewer;
nsresult rv = NS_ERROR_FAILURE;
/* mCreatingDocument should never be true at this point. However, it's
a theoretical possibility. We want to know about it and make it stop,
and this sounds like a job for an assertion. */
NS_ASSERTION(!mCreatingDocument, "infinite(?) loop creating document averted");
if (mCreatingDocument)
return NS_ERROR_FAILURE;
mCreatingDocument = PR_TRUE;
// mContentViewer->PermitUnload may release |this| docshell.
nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
if (mContentViewer) {
// We've got a content viewer already. Make sure the user
// permits us to discard the current document and replace it
// with about:blank. And also ensure we fire the unload events
// in the current document.
PRBool okToUnload;
rv = mContentViewer->PermitUnload(&okToUnload);
if (NS_SUCCEEDED(rv) && !okToUnload) {
// The user chose not to unload the page, interrupt the load.
return NS_ERROR_FAILURE;
}
mSavingOldViewer = CanSavePresentation(LOAD_NORMAL, nsnull, nsnull);
// Make sure to blow away our mLoadingURI just in case. No loads
// from inside this pagehide.
mLoadingURI = nsnull;
// Notify the current document that it is about to be unloaded!!
//
// It is important to fire the unload() notification *before* any state
// is changed within the DocShell - otherwise, javascript will get the
// wrong information :-(
//
(void) FirePageHideNotification(!mSavingOldViewer);
}
// Now make sure we don't think we're in the middle of firing unload after
// this point. This will make us fire unload when the about:blank document
// unloads... but that's ok, more or less. Would be nice if it fired load
// too, of course.
mFiredUnloadEvent = PR_FALSE;
// one helper factory, please
nsCOMPtr<nsICategoryManager> catMan(do_GetService(NS_CATEGORYMANAGER_CONTRACTID));
if (!catMan)
return NS_ERROR_FAILURE;
nsXPIDLCString contractId;
rv = catMan->GetCategoryEntry("Gecko-Content-Viewers", "text/html", getter_Copies(contractId));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDocumentLoaderFactory> docFactory(do_GetService(contractId));
if (docFactory) {
// generate (about:blank) document to load
docFactory->CreateBlankDocument(mLoadGroup, aPrincipal,
getter_AddRefs(blankDoc));
if (blankDoc) {
blankDoc->SetContainer(static_cast<nsIDocShell *>(this));
// create a content viewer for us and the new document
docFactory->CreateInstanceForDocument(NS_ISUPPORTS_CAST(nsIDocShell *, this),
blankDoc, "view", getter_AddRefs(viewer));
// hook 'em up
if (viewer) {
viewer->SetContainer(static_cast<nsIContentViewerContainer *>(this));
nsCOMPtr<nsIDOMDocument> domdoc(do_QueryInterface(blankDoc));
Embed(viewer, "", 0);
viewer->SetDOMDocument(domdoc);
SetCurrentURI(blankDoc->GetDocumentURI(), nsnull, PR_TRUE);
rv = NS_OK;
}
}
}
mCreatingDocument = PR_FALSE;
// The transient about:blank viewer doesn't have a session history entry.
SetHistoryEntry(&mOSHE, nsnull);
return rv;
}
PRBool
nsDocShell::CanSavePresentation(PRUint32 aLoadType,
nsIRequest *aNewRequest,
nsIDocument *aNewDocument)
{
if (!mOSHE)
return PR_FALSE; // no entry to save into
// Only save presentation for "normal" loads and link loads. Anything else
// probably wants to refetch the page, so caching the old presentation
// would be incorrect.
if (aLoadType != LOAD_NORMAL &&
aLoadType != LOAD_HISTORY &&
aLoadType != LOAD_LINK &&
aLoadType != LOAD_STOP_CONTENT &&
aLoadType != LOAD_STOP_CONTENT_AND_REPLACE &&
aLoadType != LOAD_ERROR_PAGE)
return PR_FALSE;
// If the session history entry has the saveLayoutState flag set to false,
// then we should not cache the presentation.
PRBool canSaveState;
mOSHE->GetSaveLayoutStateFlag(&canSaveState);
if (canSaveState == PR_FALSE)
return PR_FALSE;
// If the document is not done loading, don't cache it.
nsCOMPtr<nsPIDOMWindow> pWin = do_QueryInterface(mScriptGlobal);
if (!pWin || pWin->IsLoading())
return PR_FALSE;
if (pWin->WouldReuseInnerWindow(aNewDocument))
return PR_FALSE;
// Avoid doing the work of saving the presentation state in the case where
// the content viewer cache is disabled.
if (nsSHistory::GetMaxTotalViewers() == 0)
return PR_FALSE;
// Don't cache the content viewer if we're in a subframe and the subframe
// pref is disabled.
PRBool cacheFrames = PR_FALSE;
mPrefs->GetBoolPref("browser.sessionhistory.cache_subframes",
&cacheFrames);
if (!cacheFrames) {
nsCOMPtr<nsIDocShellTreeItem> root;
GetSameTypeParent(getter_AddRefs(root));
if (root && root != this) {
return PR_FALSE; // this is a subframe load
}
}
// If the document does not want its presentation cached, then don't.
nsCOMPtr<nsIDocument> doc = do_QueryInterface(pWin->GetExtantDocument());
if (!doc || !doc->CanSavePresentation(aNewRequest))
return PR_FALSE;
return PR_TRUE;
}
nsresult
nsDocShell::CaptureState()
{
if (!mOSHE || mOSHE == mLSHE) {
// No entry to save into, or we're replacing the existing entry.
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsPIDOMWindow> privWin = do_QueryInterface(mScriptGlobal);
if (!privWin)
return NS_ERROR_FAILURE;
nsCOMPtr<nsISupports> windowState;
nsresult rv = privWin->SaveWindowState(getter_AddRefs(windowState));
NS_ENSURE_SUCCESS(rv, rv);
#ifdef DEBUG_PAGE_CACHE
nsCOMPtr<nsIURI> uri;
mOSHE->GetURI(getter_AddRefs(uri));
nsCAutoString spec;
if (uri)
uri->GetSpec(spec);
printf("Saving presentation into session history\n");
printf(" SH URI: %s\n", spec.get());
#endif
rv = mOSHE->SetWindowState(windowState);
NS_ENSURE_SUCCESS(rv, rv);
// Suspend refresh URIs and save off the timer queue
rv = mOSHE->SetRefreshURIList(mSavedRefreshURIList);
NS_ENSURE_SUCCESS(rv, rv);
// Capture the current content viewer bounds.
nsCOMPtr<nsIPresShell> shell;
nsDocShell::GetPresShell(getter_AddRefs(shell));
if (shell) {
nsIViewManager *vm = shell->GetViewManager();
if (vm) {
nsIView *rootView = nsnull;
vm->GetRootView(rootView);
if (rootView) {
nsIWidget *widget = rootView->GetWidget();
if (widget) {
nsRect bounds(0, 0, 0, 0);
widget->GetBounds(bounds);
rv = mOSHE->SetViewerBounds(bounds);
}
}
}
}
// Capture the docshell hierarchy.
mOSHE->ClearChildShells();
PRInt32 childCount = mChildList.Count();
for (PRInt32 i = 0; i < childCount; ++i) {
nsCOMPtr<nsIDocShellTreeItem> childShell = do_QueryInterface(ChildAt(i));
NS_ASSERTION(childShell, "null child shell");
mOSHE->AddChildShell(childShell);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::RestorePresentationEvent::Run()
{
if (mDocShell && NS_FAILED(mDocShell->RestoreFromHistory()))
NS_WARNING("RestoreFromHistory failed");
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::BeginRestore(nsIContentViewer *aContentViewer, PRBool aTop)
{
nsresult rv;
if (!aContentViewer) {
rv = EnsureContentViewer();
NS_ENSURE_SUCCESS(rv, rv);
aContentViewer = mContentViewer;
}
// Dispatch events for restoring the presentation. We try to simulate
// the progress notifications loading the document would cause, so we add
// the document's channel to the loadgroup to initiate stateChange
// notifications.
nsCOMPtr<nsIDOMDocument> domDoc;
aContentViewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
if (doc) {
nsIChannel *channel = doc->GetChannel();
if (channel) {
mEODForCurrentDocument = PR_FALSE;
mIsRestoringDocument = PR_TRUE;
mLoadGroup->AddRequest(channel, nsnull);
mIsRestoringDocument = PR_FALSE;
}
}
if (!aTop) {
// This point corresponds to us having gotten OnStartRequest or
// STATE_START, so do the same thing that CreateContentViewer does at
// this point to ensure that unload/pagehide events for this document
// will fire when it's unloaded again.
mFiredUnloadEvent = PR_FALSE;
// For non-top frames, there is no notion of making sure that the
// previous document is in the domwindow when STATE_START notifications
// happen. We can just call BeginRestore for all of the child shells
// now.
rv = BeginRestoreChildren();
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
nsDocShell::BeginRestoreChildren()
{
PRInt32 n = mChildList.Count();
for (PRInt32 i = 0; i < n; ++i) {
nsCOMPtr<nsIDocShell> child = do_QueryInterface(ChildAt(i));
if (child) {
nsresult rv = child->BeginRestore(nsnull, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::FinishRestore()
{
// First we call finishRestore() on our children. In the simulated load,
// all of the child frames finish loading before the main document.
PRInt32 n = mChildList.Count();
for (PRInt32 i = 0; i < n; ++i) {
nsCOMPtr<nsIDocShell> child = do_QueryInterface(ChildAt(i));
if (child) {
child->FinishRestore();
}
}
if (mContentViewer) {
nsCOMPtr<nsIDOMDocument> domDoc;
mContentViewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
if (doc) {
// Finally, we remove the request from the loadgroup. This will
// cause onStateChange(STATE_STOP) to fire, which will fire the
// pageshow event to the chrome.
nsIChannel *channel = doc->GetChannel();
if (channel) {
mIsRestoringDocument = PR_TRUE;
mLoadGroup->RemoveRequest(channel, nsnull, NS_OK);
mIsRestoringDocument = PR_FALSE;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetRestoringDocument(PRBool *aRestoring)
{
*aRestoring = mIsRestoringDocument;
return NS_OK;
}
nsresult
nsDocShell::RestorePresentation(nsISHEntry *aSHEntry, PRBool *aRestoring)
{
NS_ASSERTION(mLoadType & LOAD_CMD_HISTORY,
"RestorePresentation should only be called for history loads");
nsCOMPtr<nsIContentViewer> viewer;
aSHEntry->GetContentViewer(getter_AddRefs(viewer));
#ifdef DEBUG_PAGE_CACHE
nsCOMPtr<nsIURI> uri;
aSHEntry->GetURI(getter_AddRefs(uri));
nsCAutoString spec;
if (uri)
uri->GetSpec(spec);
#endif
*aRestoring = PR_FALSE;
if (!viewer) {
#ifdef DEBUG_PAGE_CACHE
printf("no saved presentation for uri: %s\n", spec.get());
#endif
return NS_OK;
}
// We need to make sure the content viewer's container is this docshell.
// In subframe navigation, it's possible for the docshell that the
// content viewer was originally loaded into to be replaced with a
// different one. We don't currently support restoring the presentation
// in that case.
nsCOMPtr<nsISupports> container;
viewer->GetContainer(getter_AddRefs(container));
if (!::SameCOMIdentity(container, GetAsSupports(this))) {
#ifdef DEBUG_PAGE_CACHE
printf("No valid container, clearing presentation\n");
#endif
aSHEntry->SetContentViewer(nsnull);
return NS_ERROR_FAILURE;
}
NS_ASSERTION(mContentViewer != viewer, "Restoring existing presentation");
#ifdef DEBUG_PAGE_CACHE
printf("restoring presentation from session history: %s\n", spec.get());
#endif
SetHistoryEntry(&mLSHE, aSHEntry);
// Add the request to our load group. We do this before swapping out
// the content viewers so that consumers of STATE_START can access
// the old document. We only deal with the toplevel load at this time --
// to be consistent with normal document loading, subframes cannot start
// loading until after data arrives, which is after STATE_START completes.
BeginRestore(viewer, PR_TRUE);
// Post an event that will remove the request after we've returned
// to the event loop. This mimics the way it is called by nsIChannel
// implementations.
// Revoke any pending restore (just in case)
NS_ASSERTION(!mRestorePresentationEvent.IsPending(),
"should only have one RestorePresentationEvent");
mRestorePresentationEvent.Revoke();
nsRefPtr<RestorePresentationEvent> evt = new RestorePresentationEvent(this);
nsresult rv = NS_DispatchToCurrentThread(evt);
if (NS_SUCCEEDED(rv)) {
mRestorePresentationEvent = evt.get();
// The rest of the restore processing will happen on our event
// callback.
*aRestoring = PR_TRUE;
}
return rv;
}
nsresult
nsDocShell::RestoreFromHistory()
{
mRestorePresentationEvent.Forget();
// This section of code follows the same ordering as CreateContentViewer.
if (!mLSHE)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIContentViewer> viewer;
mLSHE->GetContentViewer(getter_AddRefs(viewer));
if (!viewer)
return NS_ERROR_FAILURE;
if (mSavingOldViewer) {
// We determined that it was safe to cache the document presentation
// at the time we initiated the new load. We need to check whether
// it's still safe to do so, since there may have been DOM mutations
// or new requests initiated.
nsCOMPtr<nsIDOMDocument> domDoc;
viewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
nsIRequest *request = nsnull;
if (doc)
request = doc->GetChannel();
mSavingOldViewer = CanSavePresentation(mLoadType, request, doc);
}
nsCOMPtr<nsIMarkupDocumentViewer> oldMUDV(do_QueryInterface(mContentViewer));
nsCOMPtr<nsIMarkupDocumentViewer> newMUDV(do_QueryInterface(viewer));
float textZoom = 1.0f;
float pageZoom = 1.0f;
if (oldMUDV && newMUDV) {
oldMUDV->GetTextZoom(&textZoom);
oldMUDV->GetFullZoom(&pageZoom);
}
// Protect against mLSHE going away via a load triggered from
// pagehide or unload.
nsCOMPtr<nsISHEntry> origLSHE = mLSHE;
// Make sure to blow away our mLoadingURI just in case. No loads
// from inside this pagehide.
mLoadingURI = nsnull;
// Notify the old content viewer that it's being hidden.
FirePageHideNotification(!mSavingOldViewer);
// If mLSHE was changed as a result of the pagehide event, then
// something else was loaded. Don't finish restoring.
if (mLSHE != origLSHE)
return NS_OK;
// Set mFiredUnloadEvent = PR_FALSE so that the unload handler for the
// *new* document will fire.
mFiredUnloadEvent = PR_FALSE;
mURIResultedInDocument = PR_TRUE;
nsCOMPtr<nsISHistory> rootSH;
GetRootSessionHistory(getter_AddRefs(rootSH));
if (rootSH) {
nsCOMPtr<nsISHistoryInternal> hist = do_QueryInterface(rootSH);
rootSH->GetIndex(&mPreviousTransIndex);
hist->UpdateIndex();
rootSH->GetIndex(&mLoadedTransIndex);
#ifdef DEBUG_PAGE_CACHE
printf("Previous index: %d, Loaded index: %d\n\n", mPreviousTransIndex,
mLoadedTransIndex);
#endif
}
// Rather than call Embed(), we will retrieve the viewer from the session
// history entry and swap it in.
// XXX can we refactor this so that we can just call Embed()?
PersistLayoutHistoryState();
nsresult rv;
if (mContentViewer) {
if (mSavingOldViewer && NS_FAILED(CaptureState())) {
if (mOSHE) {
mOSHE->SyncPresentationState();
}
mSavingOldViewer = PR_FALSE;
}
}
mSavedRefreshURIList = nsnull;
// In cases where we use a transient about:blank viewer between loads,
// we never show the transient viewer, so _its_ previous viewer is never
// unhooked from the view hierarchy. Destroy any such previous viewer now,
// before we grab the root view sibling, so that we don't grab a view
// that's about to go away.
if (mContentViewer) {
nsCOMPtr<nsIContentViewer> previousViewer;
mContentViewer->GetPreviousViewer(getter_AddRefs(previousViewer));
if (previousViewer) {
mContentViewer->SetPreviousViewer(nsnull);
previousViewer->Destroy();
}
}
// Save off the root view's parent and sibling so that we can insert the
// new content viewer's root view at the same position. Also save the
// bounds of the root view's widget.
nsIView *rootViewSibling = nsnull, *rootViewParent = nsnull;
nsRect newBounds(0, 0, 0, 0);
nsCOMPtr<nsIPresShell> oldPresShell;
nsDocShell::GetPresShell(getter_AddRefs(oldPresShell));
if (oldPresShell) {
nsIViewManager *vm = oldPresShell->GetViewManager();
if (vm) {
nsIView *oldRootView = nsnull;
vm->GetRootView(oldRootView);
if (oldRootView) {
rootViewSibling = oldRootView->GetNextSibling();
rootViewParent = oldRootView->GetParent();
nsIWidget *widget = oldRootView->GetWidget();
if (widget) {
widget->GetBounds(newBounds);
}
}
}
}
// Transfer ownership to mContentViewer. By ensuring that either the
// docshell or the session history, but not both, have references to the
// content viewer, we prevent the viewer from being torn down after
// Destroy() is called.
if (mContentViewer) {
mContentViewer->Close(mSavingOldViewer ? mOSHE.get() : nsnull);
viewer->SetPreviousViewer(mContentViewer);
}
mContentViewer.swap(viewer);
viewer = nsnull; // force a release to complete ownership transfer
// Grab all of the related presentation from the SHEntry now.
// Clearing the viewer from the SHEntry will clear all of this state.
nsCOMPtr<nsISupports> windowState;
mLSHE->GetWindowState(getter_AddRefs(windowState));
mLSHE->SetWindowState(nsnull);
PRBool sticky;
mLSHE->GetSticky(&sticky);
nsCOMPtr<nsIDOMDocument> domDoc;
mContentViewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMArray<nsIDocShellTreeItem> childShells;
PRInt32 i = 0;
nsCOMPtr<nsIDocShellTreeItem> child;
while (NS_SUCCEEDED(mLSHE->ChildShellAt(i++, getter_AddRefs(child))) &&
child) {
childShells.AppendObject(child);
}
// get the previous content viewer size
nsRect oldBounds(0, 0, 0, 0);
mLSHE->GetViewerBounds(oldBounds);
// Restore the refresh URI list. The refresh timers will be restarted
// when EndPageLoad() is called.
nsCOMPtr<nsISupportsArray> refreshURIList;
mLSHE->GetRefreshURIList(getter_AddRefs(refreshURIList));
// Reattach to the window object.
rv = mContentViewer->Open(windowState, mLSHE);
// Now remove it from the cached presentation.
mLSHE->SetContentViewer(nsnull);
mEODForCurrentDocument = PR_FALSE;
#ifdef DEBUG
{
nsCOMPtr<nsISupportsArray> refreshURIs;
mLSHE->GetRefreshURIList(getter_AddRefs(refreshURIs));
nsCOMPtr<nsIDocShellTreeItem> childShell;
mLSHE->ChildShellAt(0, getter_AddRefs(childShell));
NS_ASSERTION(!refreshURIs && !childShell,
"SHEntry should have cleared presentation state");
}
#endif
// Restore the sticky state of the viewer. The viewer has set this state
// on the history entry in Destroy() just before marking itself non-sticky,
// to avoid teardown of the presentation.
mContentViewer->SetSticky(sticky);
// Now that we have switched documents, forget all of our children.
DestroyChildren();
NS_ENSURE_SUCCESS(rv, rv);
// mLSHE is now our currently-loaded document.
SetHistoryEntry(&mOSHE, mLSHE);
// XXX special wyciwyg handling in Embed()?
// We aren't going to restore any items from the LayoutHistoryState,
// but we don't want them to stay around in case the page is reloaded.
SetLayoutHistoryState(nsnull);
// This is the end of our Embed() replacement
mSavingOldViewer = PR_FALSE;
mEODForCurrentDocument = PR_FALSE;
// Tell the event loop to favor plevents over user events, see comments
// in CreateContentViewer.
if (++gNumberOfDocumentsLoading == 1)
FavorPerformanceHint(PR_TRUE, NS_EVENT_STARVATION_DELAY_HINT);
if (oldMUDV && newMUDV) {
newMUDV->SetTextZoom(textZoom);
newMUDV->SetFullZoom(pageZoom);
}
nsCOMPtr<nsIDocument> document = do_QueryInterface(domDoc);
if (document) {
// Use the uri from the mLSHE we had when we entered this function
// (which need not match the document's URI if anchors are involved),
// since that's the history entry we're loading. Note that if we use
// origLSHE we don't have to worry about whether the entry in question
// is still mLSHE or whether it's now mOSHE.
nsCOMPtr<nsIURI> uri;
origLSHE->GetURI(getter_AddRefs(uri));
SetCurrentURI(uri, document->GetChannel(), PR_TRUE);
}
// This is the end of our CreateContentViewer() replacement.
// Now we simulate a load. First, we restore the state of the javascript
// window object.
nsCOMPtr<nsPIDOMWindow> privWin =
do_GetInterface(static_cast<nsIInterfaceRequestor*>(this));
NS_ASSERTION(privWin, "could not get nsPIDOMWindow interface");
rv = privWin->RestoreWindowState(windowState);
NS_ENSURE_SUCCESS(rv, rv);
// Now, dispatch a title change event which would happed as the
// <head> is parsed.
nsCOMPtr<nsIDOMNSDocument> nsDoc = do_QueryInterface(document);
if (nsDoc) {
const nsAFlatString &title = document->GetDocumentTitle();
nsDoc->SetTitle(title);
}
// Now we simulate appending child docshells for subframes.
for (i = 0; i < childShells.Count(); ++i) {
nsIDocShellTreeItem *childItem = childShells.ObjectAt(i);
nsCOMPtr<nsIDocShell> childShell = do_QueryInterface(childItem);
// Make sure to not clobber the state of the child. Since AddChild
// always clobbers it, save it off first.
PRBool allowPlugins;
childShell->GetAllowPlugins(&allowPlugins);
PRBool allowJavascript;
childShell->GetAllowJavascript(&allowJavascript);
PRBool allowRedirects;
childShell->GetAllowMetaRedirects(&allowRedirects);
PRBool allowSubframes;
childShell->GetAllowSubframes(&allowSubframes);
PRBool allowImages;
childShell->GetAllowImages(&allowImages);
AddChild(childItem);
childShell->SetAllowPlugins(allowPlugins);
childShell->SetAllowJavascript(allowJavascript);
childShell->SetAllowMetaRedirects(allowRedirects);
childShell->SetAllowSubframes(allowSubframes);
childShell->SetAllowImages(allowImages);
rv = childShell->BeginRestore(nsnull, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIPresShell> shell;
nsDocShell::GetPresShell(getter_AddRefs(shell));
nsIViewManager *newVM = shell ? shell->GetViewManager() : nsnull;
nsIView *newRootView = nsnull;
if (newVM)
newVM->GetRootView(newRootView);
// Insert the new root view at the correct location in the view tree.
if (rootViewParent) {
nsIViewManager *parentVM = rootViewParent->GetViewManager();
if (parentVM && newRootView) {
// InsertChild(parent, child, sib, PR_TRUE) inserts the child after
// sib in content order, which is before sib in view order. BUT
// when sib is null it inserts at the end of the the document
// order, i.e., first in view order. But when oldRootSibling is
// null, the old root as at the end of the view list --- last in
// content order --- and we want to call InsertChild(parent, child,
// nsnull, PR_FALSE) in that case.
parentVM->InsertChild(rootViewParent, newRootView,
rootViewSibling,
rootViewSibling ? PR_TRUE : PR_FALSE);
NS_ASSERTION(newRootView->GetNextSibling() == rootViewSibling,
"error in InsertChild");
}
}
// Now that all of the child docshells have been put into place, we can
// restart the timers for the window and all of the child frames.
privWin->ResumeTimeouts();
// Restore the refresh URI list. The refresh timers will be restarted
// when EndPageLoad() is called.
mRefreshURIList = refreshURIList;
// Meta-refresh timers have been restarted for this shell, but not
// for our children. Walk the child shells and restart their timers.
PRInt32 n = mChildList.Count();
for (i = 0; i < n; ++i) {
nsCOMPtr<nsIDocShell> child = do_QueryInterface(ChildAt(i));
if (child)
child->ResumeRefreshURIs();
}
// Make sure this presentation is the same size as the previous
// presentation. If this is not the same size we showed it at last time,
// then we need to resize the widget.
// XXXbryner This interacts poorly with Firefox's infobar. If the old
// presentation had the infobar visible, then we will resize the new
// presentation to that smaller size. However, firing the locationchanged
// event will hide the infobar, which will immediately resize the window
// back to the larger size. A future optimization might be to restore
// the presentation at the "wrong" size, then fire the locationchanged
// event and check whether the docshell's new size is the same as the
// cached viewer size (skipping the resize if they are equal).
if (newRootView) {
nsIWidget *widget = newRootView->GetWidget();
if (widget && !newBounds.IsEmpty() && newBounds != oldBounds) {
#ifdef DEBUG_PAGE_CACHE
printf("resize widget(%d, %d, %d, %d)\n", newBounds.x,
newBounds.y, newBounds.width, newBounds.height);
#endif
widget->Resize(newBounds.x, newBounds.y, newBounds.width,
newBounds.height, PR_FALSE);
}
}
// Simulate the completion of the load.
nsDocShell::FinishRestore();
// Restart plugins, and paint the content.
if (shell)
shell->Thaw();
return privWin->FireDelayedDOMEvents();
}
NS_IMETHODIMP
nsDocShell::CreateContentViewer(const char *aContentType,
nsIRequest * request,
nsIStreamListener ** aContentHandler)
{
*aContentHandler = nsnull;
// Can we check the content type of the current content viewer
// and reuse it without destroying it and re-creating it?
NS_ASSERTION(mLoadGroup, "Someone ignored return from Init()?");
// Instantiate the content viewer object
nsCOMPtr<nsIContentViewer> viewer;
nsresult rv = NewContentViewerObj(aContentType, request, mLoadGroup,
aContentHandler, getter_AddRefs(viewer));
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
// Notify the current document that it is about to be unloaded!!
//
// It is important to fire the unload() notification *before* any state
// is changed within the DocShell - otherwise, javascript will get the
// wrong information :-(
//
if (mSavingOldViewer) {
// We determined that it was safe to cache the document presentation
// at the time we initiated the new load. We need to check whether
// it's still safe to do so, since there may have been DOM mutations
// or new requests initiated.
nsCOMPtr<nsIDOMDocument> domDoc;
viewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
mSavingOldViewer = CanSavePresentation(mLoadType, request, doc);
}
NS_ASSERTION(!mLoadingURI, "Re-entering unload?");
nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(request);
if (aOpenedChannel) {
aOpenedChannel->GetURI(getter_AddRefs(mLoadingURI));
}
FirePageHideNotification(!mSavingOldViewer);
mLoadingURI = nsnull;
// Set mFiredUnloadEvent = PR_FALSE so that the unload handler for the
// *new* document will fire.
mFiredUnloadEvent = PR_FALSE;
// we've created a new document so go ahead and call
// OnLoadingSite(), but don't fire OnLocationChange()
// notifications before we've called Embed(). See bug 284993.
mURIResultedInDocument = PR_TRUE;
PRBool onLocationChangeNeeded = OnLoadingSite(aOpenedChannel, PR_FALSE);
// let's try resetting the load group if we need to...
nsCOMPtr<nsILoadGroup> currentLoadGroup;
NS_ENSURE_SUCCESS(aOpenedChannel->
GetLoadGroup(getter_AddRefs(currentLoadGroup)),
NS_ERROR_FAILURE);
if (currentLoadGroup != mLoadGroup) {
nsLoadFlags loadFlags = 0;
//Cancel any URIs that are currently loading...
/// XXX: Need to do this eventually Stop();
//
// Retarget the document to this loadgroup...
//
/* First attach the channel to the right loadgroup
* and then remove from the old loadgroup. This
* puts the notifications in the right order and
* we don't null-out mLSHE in OnStateChange() for
* all redirected urls
*/
aOpenedChannel->SetLoadGroup(mLoadGroup);
// Mark the channel as being a document URI...
aOpenedChannel->GetLoadFlags(&loadFlags);
loadFlags |= nsIChannel::LOAD_DOCUMENT_URI;
aOpenedChannel->SetLoadFlags(loadFlags);
mLoadGroup->AddRequest(request, nsnull);
if (currentLoadGroup)
currentLoadGroup->RemoveRequest(request, nsnull,
NS_BINDING_RETARGETED);
// Update the notification callbacks, so that progress and
// status information are sent to the right docshell...
aOpenedChannel->SetNotificationCallbacks(this);
}
NS_ENSURE_SUCCESS(Embed(viewer, "", (nsISupports *) nsnull),
NS_ERROR_FAILURE);
mSavedRefreshURIList = nsnull;
mSavingOldViewer = PR_FALSE;
mEODForCurrentDocument = PR_FALSE;
// if this document is part of a multipart document,
// the ID can be used to distinguish it from the other parts.
nsCOMPtr<nsIMultiPartChannel> multiPartChannel(do_QueryInterface(request));
if (multiPartChannel) {
nsCOMPtr<nsIPresShell> shell;
rv = GetPresShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
nsIDocument *doc = shell->GetDocument();
if (doc) {
PRUint32 partID;
multiPartChannel->GetPartID(&partID);
doc->SetPartID(partID);
}
}
}
// Give hint to native plevent dispatch mechanism. If a document
// is loading the native plevent dispatch mechanism should favor
// performance over normal native event dispatch priorities.
if (++gNumberOfDocumentsLoading == 1) {
// Hint to favor performance for the plevent notification mechanism.
// We want the pages to load as fast as possible even if its means
// native messages might be starved.
FavorPerformanceHint(PR_TRUE, NS_EVENT_STARVATION_DELAY_HINT);
}
if (onLocationChangeNeeded) {
FireOnLocationChange(this, request, mCurrentURI);
}
return NS_OK;
}
nsresult
nsDocShell::NewContentViewerObj(const char *aContentType,
nsIRequest * request, nsILoadGroup * aLoadGroup,
nsIStreamListener ** aContentHandler,
nsIContentViewer ** aViewer)
{
nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(request);
nsresult rv;
nsCOMPtr<nsICategoryManager> catMan(do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv));
if (NS_FAILED(rv))
return rv;
nsXPIDLCString contractId;
rv = catMan->GetCategoryEntry("Gecko-Content-Viewers", aContentType, getter_Copies(contractId));
// Create an instance of the document-loader-factory
nsCOMPtr<nsIDocumentLoaderFactory> docLoaderFactory;
if (NS_SUCCEEDED(rv))
docLoaderFactory = do_GetService(contractId.get());
if (!docLoaderFactory) {
return NS_ERROR_FAILURE;
}
// Now create an instance of the content viewer
// nsLayoutDLF makes the determination if it should be a "view-source" instead of "view"
NS_ENSURE_SUCCESS(docLoaderFactory->CreateInstance("view",
aOpenedChannel,
aLoadGroup, aContentType,
static_cast<nsIContentViewerContainer*>(this),
nsnull,
aContentHandler,
aViewer),
NS_ERROR_FAILURE);
(*aViewer)->SetContainer(static_cast<nsIContentViewerContainer *>(this));
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetupNewViewer(nsIContentViewer * aNewViewer)
{
//
// Copy content viewer state from previous or parent content viewer.
//
// The following logic is mirrored in nsHTMLDocument::StartDocumentLoad!
//
// Do NOT to maintain a reference to the old content viewer outside
// of this "copying" block, or it will not be destroyed until the end of
// this routine and all <SCRIPT>s and event handlers fail! (bug 20315)
//
// In this block of code, if we get an error result, we return it
// but if we get a null pointer, that's perfectly legal for parent
// and parentContentViewer.
//
PRInt32 x = 0;
PRInt32 y = 0;
PRInt32 cx = 0;
PRInt32 cy = 0;
// This will get the size from the current content viewer or from the
// Init settings
DoGetPositionAndSize(&x, &y, &cx, &cy);
nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
NS_ENSURE_SUCCESS(GetSameTypeParent(getter_AddRefs(parentAsItem)),
NS_ERROR_FAILURE);
nsCOMPtr<nsIDocShell> parent(do_QueryInterface(parentAsItem));
nsCAutoString defaultCharset;
nsCAutoString forceCharset;
nsCAutoString hintCharset;
PRInt32 hintCharsetSource;
nsCAutoString prevDocCharset;
float textZoom;
float pageZoom;
PRBool styleDisabled;
// |newMUDV| also serves as a flag to set the data from the above vars
nsCOMPtr<nsIMarkupDocumentViewer> newMUDV;
if (mContentViewer || parent) {
nsCOMPtr<nsIMarkupDocumentViewer> oldMUDV;
if (mContentViewer) {
// Get any interesting state from old content viewer
// XXX: it would be far better to just reuse the document viewer ,
// since we know we're just displaying the same document as before
oldMUDV = do_QueryInterface(mContentViewer);
// Tell the old content viewer to hibernate in session history when
// it is destroyed.
if (mSavingOldViewer && NS_FAILED(CaptureState())) {
if (mOSHE) {
mOSHE->SyncPresentationState();
}
mSavingOldViewer = PR_FALSE;
}
}
else {
// No old content viewer, so get state from parent's content viewer
nsCOMPtr<nsIContentViewer> parentContentViewer;
parent->GetContentViewer(getter_AddRefs(parentContentViewer));
oldMUDV = do_QueryInterface(parentContentViewer);
}
if (oldMUDV) {
nsresult rv;
newMUDV = do_QueryInterface(aNewViewer,&rv);
if (newMUDV) {
NS_ENSURE_SUCCESS(oldMUDV->
GetDefaultCharacterSet(defaultCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetForceCharacterSet(forceCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetHintCharacterSet(hintCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetHintCharacterSetSource(&hintCharsetSource),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetTextZoom(&textZoom),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetFullZoom(&pageZoom),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetAuthorStyleDisabled(&styleDisabled),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(oldMUDV->
GetPrevDocCharacterSet(prevDocCharset),
NS_ERROR_FAILURE);
}
}
}
// It is necessary to obtain the focus controller to utilize its ability
// to suppress focus. This is necessary to fix Win32-only bugs related to
// a loss of focus when mContentViewer is set to null. The internal window
// is destroyed, and the OS focuses the parent window. This call ends up
// notifying the focus controller that the outer window should focus
// and this hoses us on any link traversal.
//
// Please do not touch any of the focus controller code here without
// testing bugs #28580 and 50509. These are immensely important bugs,
// so PLEASE take care not to regress them if you decide to alter this
// code later -- hyatt
nsIFocusController *focusController = nsnull;
if (mScriptGlobal) {
nsCOMPtr<nsPIDOMWindow> ourWindow = do_QueryInterface(mScriptGlobal);
focusController = ourWindow->GetRootFocusController();
if (focusController) {
// Suppress the command dispatcher.
focusController->SetSuppressFocus(PR_TRUE,
"Win32-Only Link Traversal Issue");
// Remove focus from the element that has it
nsCOMPtr<nsIDOMWindowInternal> focusedWindow;
focusController->GetFocusedWindow(getter_AddRefs(focusedWindow));
// We want to null out the last focused element if the document containing
// it is going away. If the last focused element is in a descendent
// window of our domwindow, its document will be destroyed when we
// destroy our children. So, check for this case and null out the
// last focused element. See bug 70484.
PRBool isSubWindow = PR_FALSE;
nsCOMPtr<nsIDOMWindow> curwin;
if (focusedWindow)
focusedWindow->GetParent(getter_AddRefs(curwin));
while (curwin) {
if (curwin == ourWindow) {
isSubWindow = PR_TRUE;
break;
}
// don't use nsCOMPtr here to avoid extra addref
// when assigning to curwin
nsIDOMWindow* temp;
curwin->GetParent(&temp);
if (curwin == temp) {
NS_RELEASE(temp);
break;
}
curwin = dont_AddRef(temp);
}
if (ourWindow == focusedWindow || isSubWindow)
focusController->ResetElementFocus();
}
}
nscolor bgcolor = NS_RGBA(0, 0, 0, 0);
PRBool bgSet = PR_FALSE;
// Ensure that the content viewer is destroyed *after* the GC - bug 71515
nsCOMPtr<nsIContentViewer> kungfuDeathGrip = mContentViewer;
if (mContentViewer) {
// Stop any activity that may be happening in the old document before
// releasing it...
mContentViewer->Stop();
// Try to extract the default background color from the old
// view manager, so we can use it for the next document.
nsCOMPtr<nsIDocumentViewer> docviewer =
do_QueryInterface(mContentViewer);
if (docviewer) {
nsCOMPtr<nsIPresShell> shell;
docviewer->GetPresShell(getter_AddRefs(shell));
if (shell) {
nsIViewManager* vm = shell->GetViewManager();
if (vm) {
vm->GetDefaultBackgroundColor(&bgcolor);
// If the background color is not known, don't propagate it.
bgSet = NS_GET_A(bgcolor) != 0;
}
}
}
mContentViewer->Close(mSavingOldViewer ? mOSHE.get() : nsnull);
aNewViewer->SetPreviousViewer(mContentViewer);
mContentViewer = nsnull;
}
mContentViewer = aNewViewer;
nsCOMPtr<nsIWidget> widget;
NS_ENSURE_SUCCESS(GetMainWidget(getter_AddRefs(widget)), NS_ERROR_FAILURE);
nsCOMPtr<nsIDeviceContext> deviceContext;
if (widget) {
deviceContext = do_CreateInstance(kDeviceContextCID);
NS_ENSURE_TRUE(deviceContext, NS_ERROR_FAILURE);
deviceContext->Init(widget->GetNativeData(NS_NATIVE_WIDGET));
}
nsRect bounds(x, y, cx, cy);
if (NS_FAILED(mContentViewer->Init(widget, deviceContext, bounds))) {
mContentViewer = nsnull;
NS_ERROR("ContentViewer Initialization failed");
return NS_ERROR_FAILURE;
}
// If we have old state to copy, set the old state onto the new content
// viewer
if (newMUDV) {
NS_ENSURE_SUCCESS(newMUDV->SetDefaultCharacterSet(defaultCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->SetForceCharacterSet(forceCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->SetHintCharacterSet(hintCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->
SetHintCharacterSetSource(hintCharsetSource),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->SetPrevDocCharacterSet(prevDocCharset),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->SetTextZoom(textZoom),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->SetFullZoom(pageZoom),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(newMUDV->SetAuthorStyleDisabled(styleDisabled),
NS_ERROR_FAILURE);
}
// End copying block (Don't mess with the old content/document viewer
// beyond here!!)
// See the book I wrote above regarding why the focus controller is
// being used here. -- hyatt
/* Note it's important that focus suppression be turned off no earlier
because in cases where the docshell is lazily creating an about:blank
document, mContentViewer->Init finally puts a reference to that
document into the DOM window, which prevents an infinite recursion
attempting to lazily create the document as focus is unsuppressed
(bug 110856). */
if (focusController)
focusController->SetSuppressFocus(PR_FALSE,
"Win32-Only Link Traversal Issue");
if (bgSet && widget) {
// Stuff the bgcolor from the last view manager into the new
// view manager. This improves page load continuity.
nsCOMPtr<nsIDocumentViewer> docviewer =
do_QueryInterface(mContentViewer);
if (docviewer) {
nsCOMPtr<nsIPresShell> shell;
docviewer->GetPresShell(getter_AddRefs(shell));
if (shell) {
nsIViewManager* vm = shell->GetViewManager();
if (vm) {
vm->SetDefaultBackgroundColor(bgcolor);
}
}
}
}
// XXX: It looks like the LayoutState gets restored again in Embed()
// right after the call to SetupNewViewer(...)
// We don't show the mContentViewer yet, since we want to draw the old page
// until we have enough of the new page to show. Just return with the new
// viewer still set to hidden.
// Now that we have switched documents, forget all of our children
DestroyChildren();
return NS_OK;
}
nsresult
nsDocShell::CheckLoadingPermissions()
{
// This method checks whether the caller may load content into
// this docshell. Even though we've done our best to hide windows
// from code that doesn't have the right to access them, it's
// still possible for an evil site to open a window and access
// frames in the new window through window.frames[] (which is
// allAccess for historic reasons), so we still need to do this
// check on load.
nsresult rv = NS_OK, sameOrigin = NS_OK;
if (!gValidateOrigin || !IsFrame()) {
// Origin validation was turned off, or we're not a frame.
// Permit all loads.
return rv;
}
// We're a frame. Check that the caller has write permission to
// the parent before allowing it to load anything into this
// docshell.
nsCOMPtr<nsIScriptSecurityManager> securityManager =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
PRBool ubwEnabled = PR_FALSE;
rv = securityManager->IsCapabilityEnabled("UniversalBrowserWrite",
&ubwEnabled);
if (NS_FAILED(rv) || ubwEnabled) {
return rv;
}
nsCOMPtr<nsIPrincipal> subjPrincipal;
rv = securityManager->GetSubjectPrincipal(getter_AddRefs(subjPrincipal));
NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && subjPrincipal, rv);
// Check if the caller is from the same origin as this docshell,
// or any of it's ancestors.
nsCOMPtr<nsIDocShellTreeItem> item(this);
do {
nsCOMPtr<nsIScriptGlobalObject> sgo(do_GetInterface(item));
nsCOMPtr<nsIScriptObjectPrincipal> sop(do_QueryInterface(sgo));
nsIPrincipal *p;
if (!sop || !(p = sop->GetPrincipal())) {
return NS_ERROR_UNEXPECTED;
}
// Compare origins
PRBool equal;
sameOrigin = subjPrincipal->Equals(p, &equal);
if (NS_SUCCEEDED(sameOrigin)) {
if (equal) {
// Same origin, permit load
return sameOrigin;
}
sameOrigin = NS_ERROR_DOM_PROP_ACCESS_DENIED;
}
nsCOMPtr<nsIDocShellTreeItem> tmp;
item->GetSameTypeParent(getter_AddRefs(tmp));
item.swap(tmp);
} while (item);
return sameOrigin;
}
//*****************************************************************************
// nsDocShell: Site Loading
//*****************************************************************************
class InternalLoadEvent : public nsRunnable
{
public:
InternalLoadEvent(nsDocShell* aDocShell, nsIURI * aURI, nsIURI * aReferrer,
nsISupports * aOwner, PRUint32 aFlags,
const char* aTypeHint, nsIInputStream * aPostData,
nsIInputStream * aHeadersData, PRUint32 aLoadType,
nsISHEntry * aSHEntry, PRBool aFirstParty) :
mDocShell(aDocShell),
mURI(aURI),
mReferrer(aReferrer),
mOwner(aOwner),
mFlags(aFlags),
mPostData(aPostData),
mHeadersData(aHeadersData),
mLoadType(aLoadType),
mSHEntry(aSHEntry),
mFirstParty(aFirstParty)
{
// Make sure to keep null things null as needed
if (aTypeHint) {
mTypeHint = aTypeHint;
}
}
NS_IMETHOD Run() {
return mDocShell->InternalLoad(mURI, mReferrer, mOwner, mFlags,
nsnull, mTypeHint.get(),
mPostData, mHeadersData, mLoadType,
mSHEntry, mFirstParty, nsnull, nsnull);
}
private:
nsRefPtr<nsDocShell> mDocShell;
nsCOMPtr<nsIURI> mURI;
nsCOMPtr<nsIURI> mReferrer;
nsCOMPtr<nsISupports> mOwner;
PRUint32 mFlags;
// Use IDL strings so .get() returns null by default
nsXPIDLString mWindowTarget;
nsXPIDLCString mTypeHint;
nsCOMPtr<nsIInputStream> mPostData;
nsCOMPtr<nsIInputStream> mHeadersData;
PRUint32 mLoadType;
nsCOMPtr<nsISHEntry> mSHEntry;
PRBool mFirstParty;
};
NS_IMETHODIMP
nsDocShell::InternalLoad(nsIURI * aURI,
nsIURI * aReferrer,
nsISupports * aOwner,
PRUint32 aFlags,
const PRUnichar *aWindowTarget,
const char* aTypeHint,
nsIInputStream * aPostData,
nsIInputStream * aHeadersData,
PRUint32 aLoadType,
nsISHEntry * aSHEntry,
PRBool aFirstParty,
nsIDocShell** aDocShell,
nsIRequest** aRequest)
{
nsresult rv = NS_OK;
#ifdef PR_LOGGING
if (gDocShellLeakLog && PR_LOG_TEST(gDocShellLeakLog, PR_LOG_DEBUG)) {
nsCAutoString spec;
if (aURI)
aURI->GetSpec(spec);
PR_LogPrint("DOCSHELL %p InternalLoad %s\n", this, spec.get());
}
#endif
// Initialize aDocShell/aRequest
if (aDocShell) {
*aDocShell = nsnull;
}
if (aRequest) {
*aRequest = nsnull;
}
if (!aURI) {
return NS_ERROR_NULL_POINTER;
}
NS_ENSURE_TRUE(IsValidLoadType(aLoadType), NS_ERROR_INVALID_ARG);
NS_ENSURE_TRUE(!mIsBeingDestroyed, NS_ERROR_NOT_AVAILABLE);
// wyciwyg urls can only be loaded through history. Any normal load of
// wyciwyg through docshell is illegal. Disallow such loads.
if (aLoadType & LOAD_CMD_NORMAL) {
PRBool isWyciwyg = PR_FALSE;
rv = aURI->SchemeIs("wyciwyg", &isWyciwyg);
if ((isWyciwyg && NS_SUCCEEDED(rv)) || NS_FAILED(rv))
return NS_ERROR_FAILURE;
}
PRBool bIsJavascript = PR_FALSE;
if (NS_FAILED(aURI->SchemeIs("javascript", &bIsJavascript))) {
bIsJavascript = PR_FALSE;
}
//
// First, notify any nsIContentPolicy listeners about the document load.
// Only abort the load if a content policy listener explicitly vetos it!
//
nsCOMPtr<nsIDOMElement> requestingElement;
// Use nsPIDOMWindow since we _want_ to cross the chrome boundary if needed
nsCOMPtr<nsPIDOMWindow> privateWin(do_QueryInterface(mScriptGlobal));
if (privateWin)
requestingElement = privateWin->GetFrameElementInternal();
PRInt16 shouldLoad = nsIContentPolicy::ACCEPT;
PRUint32 contentType;
if (IsFrame()) {
NS_ASSERTION(requestingElement, "A frame but no DOM element!?");
contentType = nsIContentPolicy::TYPE_SUBDOCUMENT;
} else {
contentType = nsIContentPolicy::TYPE_DOCUMENT;
}
nsISupports* context = requestingElement;
if (!context) {
context = mScriptGlobal;
}
// XXXbz would be nice to know the loading principal here... but we don't
nsCOMPtr<nsIPrincipal> loadingPrincipal;
if (aReferrer) {
nsCOMPtr<nsIScriptSecurityManager> secMan =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = secMan->GetCodebasePrincipal(aReferrer,
getter_AddRefs(loadingPrincipal));
}
rv = NS_CheckContentLoadPolicy(contentType,
aURI,
loadingPrincipal,
context,
EmptyCString(), //mime guess
nsnull, //extra
&shouldLoad);
if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad)) {
if (NS_SUCCEEDED(rv) && shouldLoad == nsIContentPolicy::REJECT_TYPE) {
return NS_ERROR_CONTENT_BLOCKED_SHOW_ALT;
}
return NS_ERROR_CONTENT_BLOCKED;
}
nsCOMPtr<nsISupports> owner(aOwner);
//
// Get an owner from the current document if necessary. Note that we only
// do this for URIs that inherit a security context; in particular we do
// NOT do this for about:blank. This way, random about:blank loads that
// have no owner (which basically means they were done by someone from
// chrome manually messing with our nsIWebNavigation or by C++ setting
// document.location) don't get a funky principal. If callers want
// something interesting to happen with the about:blank principal in this
// case, they should pass an owner in.
//
{
PRBool inherits;
// One more twist: Don't inherit the owner for external loads.
if (aLoadType != LOAD_NORMAL_EXTERNAL && !owner &&
(aFlags & INTERNAL_LOAD_FLAGS_INHERIT_OWNER) &&
NS_SUCCEEDED(URIInheritsSecurityContext(aURI, &inherits)) &&
inherits) {
// Don't allow loads that would inherit our security context
// if this document came from an unsafe channel.
nsCOMPtr<nsIDocShellTreeItem> treeItem = this;
do {
nsCOMPtr<nsIDocShell> itemDocShell =
do_QueryInterface(treeItem);
PRBool isUnsafe;
if (itemDocShell &&
NS_SUCCEEDED(itemDocShell->GetChannelIsUnsafe(&isUnsafe)) &&
isUnsafe) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsIDocShellTreeItem> parent;
treeItem->GetSameTypeParent(getter_AddRefs(parent));
parent.swap(treeItem);
} while (treeItem);
owner = GetInheritedPrincipal(PR_TRUE);
}
}
//
// Resolve the window target before going any further...
// If the load has been targeted to another DocShell, then transfer the
// load to it...
//
if (aWindowTarget && *aWindowTarget) {
// We've already done our owner-inheriting. Mask out that bit, so we
// don't try inheriting an owner from the target window if we came up
// with a null owner above.
aFlags = aFlags & ~INTERNAL_LOAD_FLAGS_INHERIT_OWNER;
// Locate the target DocShell.
// This may involve creating a new toplevel window - if necessary.
//
nsCOMPtr<nsIDocShellTreeItem> targetItem;
FindItemWithName(aWindowTarget, nsnull, this,
getter_AddRefs(targetItem));
nsCOMPtr<nsIDocShell> targetDocShell = do_QueryInterface(targetItem);
PRBool isNewWindow = PR_FALSE;
if (!targetDocShell) {
nsCOMPtr<nsIDOMWindowInternal> win =
do_GetInterface(GetAsSupports(this));
NS_ENSURE_TRUE(win, NS_ERROR_NOT_AVAILABLE);
nsDependentString name(aWindowTarget);
nsCOMPtr<nsIDOMWindow> newWin;
rv = win->Open(EmptyString(), // URL to load
name, // window name
EmptyString(), // Features
getter_AddRefs(newWin));
// In some cases the Open call doesn't actually result in a new
// window being opened. We can detect these cases by examining the
// document in |newWin|, if any.
nsCOMPtr<nsPIDOMWindow> piNewWin = do_QueryInterface(newWin);
if (piNewWin) {
nsCOMPtr<nsIDocument> newDoc =
do_QueryInterface(piNewWin->GetExtantDocument());
if (!newDoc || newDoc->IsInitialDocument()) {
isNewWindow = PR_TRUE;
aFlags |= INTERNAL_LOAD_FLAGS_FIRST_LOAD;
}
}
nsCOMPtr<nsIWebNavigation> webNav = do_GetInterface(newWin);
targetDocShell = do_QueryInterface(webNav);
nsCOMPtr<nsIScriptObjectPrincipal> sop =
do_QueryInterface(mScriptGlobal);
nsCOMPtr<nsIURI> currentCodebase;
if (sop) {
nsIPrincipal *principal = sop->GetPrincipal();
if (principal) {
principal->GetURI(getter_AddRefs(currentCodebase));
}
}
// We opened a new window for the target, clone the
// session storage if the current URI's domain matches
// that of the loading URI.
if (targetDocShell && currentCodebase && aURI) {
nsCAutoString thisDomain, newDomain;
nsresult gethostrv = currentCodebase->GetAsciiHost(thisDomain);
gethostrv |= aURI->GetAsciiHost(newDomain);
if (NS_SUCCEEDED(gethostrv) && thisDomain.Equals(newDomain)) {
nsCOMPtr<nsIDOMStorage> storage;
GetSessionStorageForURI(currentCodebase,
getter_AddRefs(storage));
nsCOMPtr<nsPIDOMStorage> piStorage =
do_QueryInterface(storage);
if (piStorage) {
nsCOMPtr<nsIDOMStorage> newstorage =
piStorage->Clone(currentCodebase);
targetDocShell->AddSessionStorage(thisDomain,
newstorage);
}
}
}
}
//
// Transfer the load to the target DocShell... Pass nsnull as the
// window target name from to prevent recursive retargeting!
//
if (NS_SUCCEEDED(rv) && targetDocShell) {
rv = targetDocShell->InternalLoad(aURI,
aReferrer,
owner,
aFlags,
nsnull, // No window target
aTypeHint,
aPostData,
aHeadersData,
aLoadType,
aSHEntry,
aFirstParty,
aDocShell,
aRequest);
if (rv == NS_ERROR_NO_CONTENT) {
// XXXbz except we never reach this code!
if (isNewWindow) {
//
// At this point, a new window has been created, but the
// URI did not have any data associated with it...
//
// So, the best we can do, is to tear down the new window
// that was just created!
//
nsCOMPtr<nsIDOMWindowInternal> domWin =
do_GetInterface(targetDocShell);
if (domWin) {
domWin->Close();
}
}
//
// NS_ERROR_NO_CONTENT should not be returned to the
// caller... This is an internal error code indicating that
// the URI had no data associated with it - probably a
// helper-app style protocol (ie. mailto://)
//
rv = NS_OK;
}
else if (isNewWindow) {
// XXX: Once new windows are created hidden, the new
// window will need to be made visible... For now,
// do nothing.
}
}
// Else we ran out of memory, or were a popup and got blocked,
// or something.
return rv;
}
//
// Load is being targetted at this docshell so return an error if the
// docshell is in the process of being destroyed.
//
if (mIsBeingDestroyed) {
return NS_ERROR_FAILURE;
}
rv = CheckLoadingPermissions();
if (NS_FAILED(rv)) {
return rv;
}
if (mFiredUnloadEvent) {
if (IsOKToLoadURI(aURI)) {
NS_PRECONDITION(!aWindowTarget || !*aWindowTarget,
"Shouldn't have a window target here!");
// If this is a replace load, make whatever load triggered
// the unload event also a replace load, so we don't
// create extra history entries.
if (LOAD_TYPE_HAS_FLAGS(aLoadType, LOAD_FLAGS_REPLACE_HISTORY)) {
mLoadType = LOAD_NORMAL_REPLACE;
}
// Do this asynchronously
nsCOMPtr<nsIRunnable> ev =
new InternalLoadEvent(this, aURI, aReferrer, aOwner, aFlags,
aTypeHint, aPostData, aHeadersData,
aLoadType, aSHEntry, aFirstParty);
return NS_DispatchToCurrentThread(ev);
}
// Just ignore this load attempt
return NS_OK;
}
// Before going any further vet loads initiated by external programs.
if (aLoadType == LOAD_NORMAL_EXTERNAL) {
// Disallow external chrome: loads targetted at content windows
PRBool isChrome = PR_FALSE;
if (NS_SUCCEEDED(aURI->SchemeIs("chrome", &isChrome)) && isChrome) {
NS_WARNING("blocked external chrome: url -- use '-chrome' option");
return NS_ERROR_FAILURE;
}
// clear the decks to prevent context bleed-through (bug 298255)
rv = CreateAboutBlankContentViewer(nsnull);
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
// reset loadType so we don't have to add lots of tests for
// LOAD_NORMAL_EXTERNAL after this point
aLoadType = LOAD_NORMAL;
}
mAllowKeywordFixup =
(aFlags & INTERNAL_LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP) != 0;
mURIResultedInDocument = PR_FALSE; // reset the clock...
//
// First:
// Check to see if the new URI is an anchor in the existing document.
// Skip this check if we're doing some sort of abnormal load, if the
// new load is a non-history load and has postdata, or if we're doing
// a history load and the page identifiers of mOSHE and aSHEntry
// don't match.
//
PRBool allowScroll = PR_TRUE;
if (!aSHEntry) {
allowScroll = (aPostData == nsnull);
} else if (mOSHE) {
PRUint32 ourPageIdent;
mOSHE->GetPageIdentifier(&ourPageIdent);
PRUint32 otherPageIdent;
aSHEntry->GetPageIdentifier(&otherPageIdent);
allowScroll = (ourPageIdent == otherPageIdent);
#ifdef DEBUG
if (allowScroll) {
nsCOMPtr<nsIInputStream> currentPostData;
mOSHE->GetPostData(getter_AddRefs(currentPostData));
NS_ASSERTION(currentPostData == aPostData,
"Different POST data for entries for the same page?");
}
#endif
}
if ((aLoadType == LOAD_NORMAL ||
aLoadType == LOAD_STOP_CONTENT ||
LOAD_TYPE_HAS_FLAGS(aLoadType, LOAD_FLAGS_REPLACE_HISTORY) ||
aLoadType == LOAD_HISTORY ||
aLoadType == LOAD_LINK) && allowScroll) {
PRBool wasAnchor = PR_FALSE;
nscoord cx, cy;
NS_ENSURE_SUCCESS(ScrollIfAnchor(aURI, &wasAnchor, aLoadType, &cx, &cy), NS_ERROR_FAILURE);
if (wasAnchor) {
mLoadType = aLoadType;
mURIResultedInDocument = PR_TRUE;
/* we need to assign mLSHE to aSHEntry right here, so that on History loads,
* SetCurrentURI() called from OnNewURI() will send proper
* onLocationChange() notifications to the browser to update
* back/forward buttons.
*/
SetHistoryEntry(&mLSHE, aSHEntry);
/* This is a anchor traversal with in the same page.
* call OnNewURI() so that, this traversal will be
* recorded in session and global history.
*/
OnNewURI(aURI, nsnull, mLoadType, PR_TRUE);
nsCOMPtr<nsIInputStream> postData;
PRUint32 pageIdent = PR_UINT32_MAX;
if (mOSHE) {
/* save current position of scroller(s) (bug 59774) */
mOSHE->SetScrollPosition(cx, cy);
// Get the postdata and page ident from the current page, if
// the new load is being done via normal means. Note that
// "normal means" can be checked for just by checking for
// LOAD_CMD_NORMAL, given the loadType and allowScroll check
// above -- it filters out some LOAD_CMD_NORMAL cases that we
// wouldn't want here.
if (aLoadType & LOAD_CMD_NORMAL) {
mOSHE->GetPostData(getter_AddRefs(postData));
mOSHE->GetPageIdentifier(&pageIdent);
}
}
/* Assign mOSHE to mLSHE. This will either be a new entry created
* by OnNewURI() for normal loads or aSHEntry for history loads.
*/
if (mLSHE) {
SetHistoryEntry(&mOSHE, mLSHE);
// Save the postData obtained from the previous page
// in to the session history entry created for the
// anchor page, so that any history load of the anchor
// page will restore the appropriate postData.
if (postData)
mOSHE->SetPostData(postData);
// Propagate our page ident to the new mOSHE so that
// we'll know it just differed by a scroll on the page.
if (pageIdent != PR_UINT32_MAX)
mOSHE->SetPageIdentifier(pageIdent);
}
/* restore previous position of scroller(s), if we're moving
* back in history (bug 59774)
*/
if (mOSHE && (aLoadType == LOAD_HISTORY || aLoadType == LOAD_RELOAD_NORMAL))
{
nscoord bx, by;
mOSHE->GetScrollPosition(&bx, &by);
SetCurScrollPosEx(bx, by);
}
/* Clear out mLSHE so that further anchor visits get
* recorded in SH and SH won't misbehave.
*/
SetHistoryEntry(&mLSHE, nsnull);
/* Set the title for the SH entry for this target url. so that
* SH menus in go/back/forward buttons won't be empty for this.
*/
if (mSessionHistory) {
PRInt32 index = -1;
mSessionHistory->GetIndex(&index);
nsCOMPtr<nsIHistoryEntry> hEntry;
mSessionHistory->GetEntryAtIndex(index, PR_FALSE,
getter_AddRefs(hEntry));
NS_ENSURE_TRUE(hEntry, NS_ERROR_FAILURE);
nsCOMPtr<nsISHEntry> shEntry(do_QueryInterface(hEntry));
if (shEntry)
shEntry->SetTitle(mTitle);
}
return NS_OK;
}
}
// mContentViewer->PermitUnload can destroy |this| docShell, which
// causes the next call of CanSavePresentation to crash.
// Hold onto |this| until we return, to prevent a crash from happening.
// (bug#331040)
nsCOMPtr<nsIDocShell> kungFuDeathGrip(this);
// Check if the page doesn't want to be unloaded. The javascript:
// protocol handler deals with this for javascript: URLs.
if (!bIsJavascript && mContentViewer) {
PRBool okToUnload;
rv = mContentViewer->PermitUnload(&okToUnload);
if (NS_SUCCEEDED(rv) && !okToUnload) {
// The user chose not to unload the page, interrupt the
// load.
return NS_OK;
}
}
// Check for saving the presentation here, before calling Stop().
// This is necessary so that we can catch any pending requests.
// Since the new request has not been created yet, we pass null for the
// new request parameter.
// Also pass nsnull for the document, since it doesn't affect the return
// value for our purposes here.
PRBool savePresentation = CanSavePresentation(aLoadType, nsnull, nsnull);
// Don't stop current network activity for javascript: URL's since
// they might not result in any data, and thus nothing should be
// stopped in those cases. In the case where they do result in
// data, the javascript: URL channel takes care of stopping
// current network activity.
if (!bIsJavascript) {
// Stop any current network activity.
// Also stop content if this is a zombie doc. otherwise
// the onload will be delayed by other loads initiated in the
// background by the first document that
// didn't fully load before the next load was initiated.
// If not a zombie, don't stop content until data
// starts arriving from the new URI...
nsCOMPtr<nsIContentViewer> zombieViewer;
if (mContentViewer) {
mContentViewer->GetPreviousViewer(getter_AddRefs(zombieViewer));
}
if (zombieViewer ||
LOAD_TYPE_HAS_FLAGS(aLoadType, LOAD_FLAGS_STOP_CONTENT)) {
rv = Stop(nsIWebNavigation::STOP_ALL);
} else {
rv = Stop(nsIWebNavigation::STOP_NETWORK);
}
if (NS_FAILED(rv))
return rv;
}
mLoadType = aLoadType;
// mLSHE should be assigned to aSHEntry, only after Stop() has
// been called. But when loading an error page, do not clear the
// mLSHE for the real page.
if (mLoadType != LOAD_ERROR_PAGE)
SetHistoryEntry(&mLSHE, aSHEntry);
mSavingOldViewer = savePresentation;
// If we have a saved content viewer in history, restore and show it now.
if (aSHEntry && (mLoadType & LOAD_CMD_HISTORY)) {
// It's possible that the previous viewer of mContentViewer is the
// viewer that will end up in aSHEntry when it gets closed. If that's
// the case, we need to go ahead and force it into its shentry so we
// can restore it.
if (mContentViewer) {
nsCOMPtr<nsIContentViewer> prevViewer;
mContentViewer->GetPreviousViewer(getter_AddRefs(prevViewer));
if (prevViewer) {
#ifdef DEBUG
nsCOMPtr<nsIContentViewer> prevPrevViewer;
prevViewer->GetPreviousViewer(getter_AddRefs(prevPrevViewer));
NS_ASSERTION(!prevPrevViewer, "Should never have viewer chain here");
#endif
nsCOMPtr<nsISHEntry> viewerEntry;
prevViewer->GetHistoryEntry(getter_AddRefs(viewerEntry));
if (viewerEntry == aSHEntry) {
// Make sure this viewer ends up in the right place
mContentViewer->SetPreviousViewer(nsnull);
prevViewer->Destroy();
}
}
}
nsCOMPtr<nsISHEntry> oldEntry = mOSHE;
PRBool restoring;
rv = RestorePresentation(aSHEntry, &restoring);
if (restoring)
return rv;
// We failed to restore the presentation, so clean up.
// Both the old and new history entries could potentially be in
// an inconsistent state.
if (NS_FAILED(rv)) {
if (oldEntry)
oldEntry->SyncPresentationState();
aSHEntry->SyncPresentationState();
}
}
nsCOMPtr<nsIRequest> req;
rv = DoURILoad(aURI, aReferrer,
!(aFlags & INTERNAL_LOAD_FLAGS_DONT_SEND_REFERRER),
owner, aTypeHint, aPostData, aHeadersData, aFirstParty,
aDocShell, getter_AddRefs(req),
(aFlags & INTERNAL_LOAD_FLAGS_FIRST_LOAD) != 0,
(aFlags & INTERNAL_LOAD_FLAGS_BYPASS_CLASSIFIER) != 0);
if (req && aRequest)
NS_ADDREF(*aRequest = req);
if (NS_FAILED(rv)) {
nsCOMPtr<nsIChannel> chan(do_QueryInterface(req));
DisplayLoadError(rv, aURI, nsnull, chan);
}
return rv;
}
nsIPrincipal*
nsDocShell::GetInheritedPrincipal(PRBool aConsiderCurrentDocument)
{
nsCOMPtr<nsIDocument> document;
if (aConsiderCurrentDocument && mContentViewer) {
nsCOMPtr<nsIDocumentViewer>
docViewer(do_QueryInterface(mContentViewer));
if (!docViewer)
return nsnull;
docViewer->GetDocument(getter_AddRefs(document));
}
if (!document) {
nsCOMPtr<nsIDocShellTreeItem> parentItem;
GetSameTypeParent(getter_AddRefs(parentItem));
if (parentItem) {
nsCOMPtr<nsIDOMDocument> parentDomDoc(do_GetInterface(parentItem));
document = do_QueryInterface(parentDomDoc);
}
}
if (!document) {
if (!aConsiderCurrentDocument) {
return nsnull;
}
// Make sure we end up with _something_ as the principal no matter
// what.
EnsureContentViewer(); // If this fails, we'll just get a null
// docViewer and bail.
nsCOMPtr<nsIDocumentViewer>
docViewer(do_QueryInterface(mContentViewer));
if (!docViewer)
return nsnull;
docViewer->GetDocument(getter_AddRefs(document));
}
//-- Get the document's principal
if (document) {
return document->NodePrincipal();
}
return nsnull;
}
nsresult
nsDocShell::DoURILoad(nsIURI * aURI,
nsIURI * aReferrerURI,
PRBool aSendReferrer,
nsISupports * aOwner,
const char * aTypeHint,
nsIInputStream * aPostData,
nsIInputStream * aHeadersData,
PRBool aFirstParty,
nsIDocShell ** aDocShell,
nsIRequest ** aRequest,
PRBool aIsNewWindowTarget,
PRBool aBypassClassifier)
{
nsresult rv;
nsCOMPtr<nsIURILoader> uriLoader;
uriLoader = do_GetService(NS_URI_LOADER_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
nsLoadFlags loadFlags = nsIRequest::LOAD_NORMAL;
if (aFirstParty) {
// tag first party URL loads
loadFlags |= nsIChannel::LOAD_INITIAL_DOCUMENT_URI;
}
if (mLoadType == LOAD_ERROR_PAGE) {
// Error pages are LOAD_BACKGROUND
loadFlags |= nsIChannel::LOAD_BACKGROUND;
}
// open a channel for the url
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel),
aURI,
nsnull,
nsnull,
static_cast<nsIInterfaceRequestor *>(this),
loadFlags);
if (NS_FAILED(rv)) {
if (rv == NS_ERROR_UNKNOWN_PROTOCOL) {
// This is a uri with a protocol scheme we don't know how
// to handle. Embedders might still be interested in
// handling the load, though, so we fire a notification
// before throwing the load away.
PRBool abort = PR_FALSE;
nsresult rv2 = mContentListener->OnStartURIOpen(aURI, &abort);
if (NS_SUCCEEDED(rv2) && abort) {
// Hey, they're handling the load for us! How convenient!
return NS_OK;
}
}
return rv;
}
// Make sure to give the caller a channel if we managed to create one
// This is important for correct error page/session history interaction
if (aRequest)
NS_ADDREF(*aRequest = channel);
channel->SetOriginalURI(aURI);
if (aTypeHint && *aTypeHint) {
channel->SetContentType(nsDependentCString(aTypeHint));
mContentTypeHint = aTypeHint;
}
else {
mContentTypeHint.Truncate();
}
//hack
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
nsCOMPtr<nsIHttpChannelInternal> httpChannelInternal(do_QueryInterface(channel));
if (httpChannelInternal) {
if (aFirstParty) {
httpChannelInternal->SetDocumentURI(aURI);
} else {
httpChannelInternal->SetDocumentURI(aReferrerURI);
}
}
nsCOMPtr<nsIWritablePropertyBag2> props(do_QueryInterface(channel));
if (props)
{
// save true referrer for those who need it (e.g. xpinstall whitelisting)
// Currently only http and ftp channels support this.
props->SetPropertyAsInterface(NS_LITERAL_STRING("docshell.internalReferrer"),
aReferrerURI);
}
//
// If this is a HTTP channel, then set up the HTTP specific information
// (ie. POST data, referrer, ...)
//
if (httpChannel) {
nsCOMPtr<nsICachingChannel> cacheChannel(do_QueryInterface(httpChannel));
/* Get the cache Key from SH */
nsCOMPtr<nsISupports> cacheKey;
if (mLSHE) {
mLSHE->GetCacheKey(getter_AddRefs(cacheKey));
}
else if (mOSHE) // for reload cases
mOSHE->GetCacheKey(getter_AddRefs(cacheKey));
// figure out if we need to set the post data stream on the channel...
// right now, this is only done for http channels.....
if (aPostData) {
// XXX it's a bit of a hack to rewind the postdata stream here but
// it has to be done in case the post data is being reused multiple
// times.
nsCOMPtr<nsISeekableStream>
postDataSeekable(do_QueryInterface(aPostData));
if (postDataSeekable) {
rv = postDataSeekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(httpChannel));
NS_ASSERTION(uploadChannel, "http must support nsIUploadChannel");
// we really need to have a content type associated with this stream!!
uploadChannel->SetUploadStream(aPostData, EmptyCString(), -1);
/* If there is a valid postdata *and* it is a History Load,
* set up the cache key on the channel, to retrieve the
* data *only* from the cache. If it is a normal reload, the
* cache is free to go to the server for updated postdata.
*/
if (cacheChannel && cacheKey) {
if (mLoadType == LOAD_HISTORY || mLoadType == LOAD_RELOAD_CHARSET_CHANGE) {
cacheChannel->SetCacheKey(cacheKey);
PRUint32 loadFlags;
if (NS_SUCCEEDED(channel->GetLoadFlags(&loadFlags)))
channel->SetLoadFlags(loadFlags | nsICachingChannel::LOAD_ONLY_FROM_CACHE);
}
else if (mLoadType == LOAD_RELOAD_NORMAL)
cacheChannel->SetCacheKey(cacheKey);
}
}
else {
/* If there is no postdata, set the cache key on the channel, and
* do not set the LOAD_ONLY_FROM_CACHE flag, so that the channel
* will be free to get it from net if it is not found in cache.
* New cache may use it creatively on CGI pages with GET
* method and even on those that say "no-cache"
*/
if (mLoadType == LOAD_HISTORY || mLoadType == LOAD_RELOAD_NORMAL
|| mLoadType == LOAD_RELOAD_CHARSET_CHANGE) {
if (cacheChannel && cacheKey)
cacheChannel->SetCacheKey(cacheKey);
}
}
if (aHeadersData) {
rv = AddHeadersToChannel(aHeadersData, httpChannel);
}
// Set the referrer explicitly
if (aReferrerURI && aSendReferrer) {
// Referrer is currenly only set for link clicks here.
httpChannel->SetReferrer(aReferrerURI);
}
}
//
// Set the owner of the channel, but only for channels that can't
// provide their own security context.
//
// XXX: Is seems wrong that the owner is ignored - even if one is
// supplied) unless the URI is javascript or data or about:blank.
// XXX: If this is ever changed, check all callers for what owners they're
// passing in. In particular, see the code and comments in LoadURI
// where we fall back on inheriting the owner if called
// from chrome. That would be very wrong if this code changed
// anything but channels that can't provide their own security context!
//
// (Currently chrome URIs set the owner when they are created!
// So setting a NULL owner would be bad!)
//
// If this code ever changes, change nsObjectLoadingContent::LoadObject
// accordingly.
PRBool inherit;
// We expect URIInheritsSecurityContext to return success for an
// about:blank URI, so don't call IsAboutBlank() if this call fails.
rv = URIInheritsSecurityContext(aURI, &inherit);
if (NS_SUCCEEDED(rv) && (inherit || IsAboutBlank(aURI))) {
channel->SetOwner(aOwner);
}
nsCOMPtr<nsIScriptChannel> scriptChannel = do_QueryInterface(channel);
if (scriptChannel) {
// Allow execution against our context if the principals match
scriptChannel->
SetExecutionPolicy(nsIScriptChannel::EXECUTE_NORMAL);
}
if (aIsNewWindowTarget) {
nsCOMPtr<nsIWritablePropertyBag2> props = do_QueryInterface(channel);
if (props) {
props->SetPropertyAsBool(
NS_LITERAL_STRING("docshell.newWindowTarget"),
PR_TRUE);
}
}
rv = DoChannelLoad(channel, uriLoader, aBypassClassifier);
//
// If the channel load failed, we failed and nsIWebProgress just ain't
// gonna happen.
//
if (NS_SUCCEEDED(rv)) {
if (aDocShell) {
*aDocShell = this;
NS_ADDREF(*aDocShell);
}
}
return rv;
}
static NS_METHOD
AppendSegmentToString(nsIInputStream *in,
void *closure,
const char *fromRawSegment,
PRUint32 toOffset,
PRUint32 count,
PRUint32 *writeCount)
{
// aFromSegment now contains aCount bytes of data.
nsCAutoString *buf = static_cast<nsCAutoString *>(closure);
buf->Append(fromRawSegment, count);
// Indicate that we have consumed all of aFromSegment
*writeCount = count;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::AddHeadersToChannel(nsIInputStream *aHeadersData,
nsIChannel *aGenericChannel)
{
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aGenericChannel);
NS_ENSURE_STATE(httpChannel);
PRUint32 numRead;
nsCAutoString headersString;
nsresult rv = aHeadersData->ReadSegments(AppendSegmentToString,
&headersString,
PR_UINT32_MAX,
&numRead);
NS_ENSURE_SUCCESS(rv, rv);
// used during the manipulation of the String from the InputStream
nsCAutoString headerName;
nsCAutoString headerValue;
PRInt32 crlf;
PRInt32 colon;
//
// Iterate over the headersString: for each "\r\n" delimited chunk,
// add the value as a header to the nsIHttpChannel
//
static const char kWhitespace[] = "\b\t\r\n ";
while (PR_TRUE) {
crlf = headersString.Find("\r\n");
if (crlf == kNotFound)
return NS_OK;
const nsCSubstring &oneHeader = StringHead(headersString, crlf);
colon = oneHeader.FindChar(':');
if (colon == kNotFound)
return NS_ERROR_UNEXPECTED;
headerName = StringHead(oneHeader, colon);
headerValue = Substring(oneHeader, colon + 1);
headerName.Trim(kWhitespace);
headerValue.Trim(kWhitespace);
headersString.Cut(0, crlf + 2);
//
// FINALLY: we can set the header!
//
rv = httpChannel->SetRequestHeader(headerName, headerValue, PR_TRUE);
NS_ENSURE_SUCCESS(rv, rv);
}
NS_NOTREACHED("oops");
return NS_ERROR_UNEXPECTED;
}
nsresult nsDocShell::DoChannelLoad(nsIChannel * aChannel,
nsIURILoader * aURILoader,
PRBool aBypassClassifier)
{
nsresult rv;
// Mark the channel as being a document URI and allow content sniffing...
nsLoadFlags loadFlags = 0;
(void) aChannel->GetLoadFlags(&loadFlags);
loadFlags |= nsIChannel::LOAD_DOCUMENT_URI |
nsIChannel::LOAD_CALL_CONTENT_SNIFFERS;
// Load attributes depend on load type...
switch (mLoadType) {
case LOAD_HISTORY:
loadFlags |= nsIRequest::VALIDATE_NEVER;
break;
case LOAD_RELOAD_CHARSET_CHANGE:
loadFlags |= nsIRequest::LOAD_FROM_CACHE;
break;
case LOAD_RELOAD_NORMAL:
case LOAD_REFRESH:
loadFlags |= nsIRequest::VALIDATE_ALWAYS;
break;
case LOAD_NORMAL_BYPASS_CACHE:
case LOAD_NORMAL_BYPASS_PROXY:
case LOAD_NORMAL_BYPASS_PROXY_AND_CACHE:
case LOAD_RELOAD_BYPASS_CACHE:
case LOAD_RELOAD_BYPASS_PROXY:
case LOAD_RELOAD_BYPASS_PROXY_AND_CACHE:
loadFlags |= nsIRequest::LOAD_BYPASS_CACHE;
break;
case LOAD_NORMAL:
case LOAD_LINK:
// Set cache checking flags
PRInt32 prefSetting;
if (NS_SUCCEEDED
(mPrefs->
GetIntPref("browser.cache.check_doc_frequency",
&prefSetting))) {
switch (prefSetting) {
case 0:
loadFlags |= nsIRequest::VALIDATE_ONCE_PER_SESSION;
break;
case 1:
loadFlags |= nsIRequest::VALIDATE_ALWAYS;
break;
case 2:
loadFlags |= nsIRequest::VALIDATE_NEVER;
break;
}
}
break;
}
(void) aChannel->SetLoadFlags(loadFlags);
rv = aURILoader->OpenURI(aChannel,
(mLoadType == LOAD_LINK),
this);
NS_ENSURE_SUCCESS(rv, rv);
if (!aBypassClassifier) {
rv = CheckClassifier(aChannel);
if (NS_FAILED(rv)) {
aChannel->Cancel(rv);
return rv;
}
}
return NS_OK;
}
nsresult
nsDocShell::CheckClassifier(nsIChannel *aChannel)
{
nsRefPtr<nsClassifierCallback> classifier = new nsClassifierCallback();
if (!classifier) return NS_ERROR_OUT_OF_MEMORY;
classifier->SetChannel(aChannel);
nsresult rv = classifier->Run();
if (rv == NS_ERROR_FACTORY_NOT_REGISTERED ||
rv == NS_ERROR_NOT_AVAILABLE) {
// no URI classifier => ignored cases
return NS_OK;
}
NS_ENSURE_SUCCESS(rv, rv);
mClassifier = classifier;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::ScrollIfAnchor(nsIURI * aURI, PRBool * aWasAnchor,
PRUint32 aLoadType, nscoord *cx, nscoord *cy)
{
NS_ASSERTION(aURI, "null uri arg");
NS_ASSERTION(aWasAnchor, "null anchor arg");
if (aURI == nsnull || aWasAnchor == nsnull) {
return NS_ERROR_FAILURE;
}
*aWasAnchor = PR_FALSE;
if (!mCurrentURI) {
return NS_OK;
}
nsCOMPtr<nsIPresShell> shell;
nsresult rv = GetPresShell(getter_AddRefs(shell));
if (NS_FAILED(rv) || !shell) {
// If we failed to get the shell, or if there is no shell,
// nothing left to do here.
return rv;
}
// NOTE: we assume URIs are absolute for comparison purposes
nsCAutoString currentSpec;
NS_ENSURE_SUCCESS(mCurrentURI->GetSpec(currentSpec),
NS_ERROR_FAILURE);
nsCAutoString newSpec;
NS_ENSURE_SUCCESS(aURI->GetSpec(newSpec), NS_ERROR_FAILURE);
// Search for hash marks in the current URI and the new URI and
// take a copy of everything to the left of the hash for
// comparison.
const char kHash = '#';
// Split the new URI into a left and right part
// (assume we're parsing it out right
nsACString::const_iterator urlStart, urlEnd, refStart, refEnd;
newSpec.BeginReading(urlStart);
newSpec.EndReading(refEnd);
PRInt32 hashNew = newSpec.FindChar(kHash);
if (hashNew == 0) {
return NS_OK; // Strange URI
}
if (hashNew > 0) {
// found it
urlEnd = urlStart;
urlEnd.advance(hashNew);
refStart = urlEnd;
++refStart; // advanced past '#'
}
else {
// no hash at all
urlEnd = refStart = refEnd;
}
const nsACString& sNewLeft = Substring(urlStart, urlEnd);
const nsACString& sNewRef = Substring(refStart, refEnd);
// Split the current URI in a left and right part
nsACString::const_iterator currentLeftStart, currentLeftEnd;
currentSpec.BeginReading(currentLeftStart);
PRInt32 hashCurrent = currentSpec.FindChar(kHash);
if (hashCurrent == 0) {
return NS_OK; // Strange URI
}
if (hashCurrent > 0) {
currentLeftEnd = currentLeftStart;
currentLeftEnd.advance(hashCurrent);
}
else {
currentSpec.EndReading(currentLeftEnd);
}
// If we have no new anchor, we do not want to scroll, unless there is a
// current anchor and we are doing a history load. So return if we have no
// new anchor, and there is no current anchor or the load is not a history
// load.
NS_ASSERTION(hashNew != 0 && hashCurrent != 0,
"What happened to the early returns above?");
if (hashNew == kNotFound &&
(hashCurrent == kNotFound || aLoadType != LOAD_HISTORY)) {
return NS_OK;
}
// Compare the URIs.
//
// NOTE: this is a case sensitive comparison because some parts of the
// URI are case sensitive, and some are not. i.e. the domain name
// is case insensitive but the the paths are not.
//
// This means that comparing "http://www.ABC.com/" to "http://www.abc.com/"
// will fail this test.
if (!Substring(currentLeftStart, currentLeftEnd).Equals(sNewLeft)) {
return NS_OK; // URIs not the same
}
// Now we know we are dealing with an anchor
*aWasAnchor = PR_TRUE;
// Both the new and current URIs refer to the same page. We can now
// browse to the hash stored in the new URI.
//
// But first let's capture positions of scroller(s) that can
// (and usually will) be modified by GoToAnchor() call.
GetCurScrollPos(ScrollOrientation_X, cx);
GetCurScrollPos(ScrollOrientation_Y, cy);
if (!sNewRef.IsEmpty()) {
// anchor is there, but if it's a load from history,
// we don't have any anchor jumping to do
PRBool scroll = aLoadType != LOAD_HISTORY &&
aLoadType != LOAD_RELOAD_NORMAL;
char *str = ToNewCString(sNewRef);
if (!str) {
return NS_ERROR_OUT_OF_MEMORY;
}
// nsUnescape modifies the string that is passed into it.
nsUnescape(str);
// 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
// We try the UTF-8 string first, and then try the document's
// charset (see below). If the string is not UTF-8,
// conversion will fail and give us an empty Unicode string.
// In that case, we should just fall through to using the
// page's charset.
rv = NS_ERROR_FAILURE;
NS_ConvertUTF8toUTF16 uStr(str);
if (!uStr.IsEmpty()) {
rv = shell->GoToAnchor(NS_ConvertUTF8toUTF16(str), scroll);
}
nsMemory::Free(str);
// Above will fail if the anchor name is not UTF-8. Need to
// convert from document charset to unicode.
if (NS_FAILED(rv)) {
// Get a document charset
NS_ENSURE_TRUE(mContentViewer, NS_ERROR_FAILURE);
nsCOMPtr<nsIDocumentViewer>
docv(do_QueryInterface(mContentViewer));
NS_ENSURE_TRUE(docv, NS_ERROR_FAILURE);
nsCOMPtr<nsIDocument> doc;
rv = docv->GetDocument(getter_AddRefs(doc));
NS_ENSURE_SUCCESS(rv, rv);
const nsACString &aCharset = doc->GetDocumentCharacterSet();
nsCOMPtr<nsITextToSubURI> textToSubURI =
do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// Unescape and convert to unicode
nsXPIDLString uStr;
rv = textToSubURI->UnEscapeAndConvert(PromiseFlatCString(aCharset).get(),
PromiseFlatCString(sNewRef).get(),
getter_Copies(uStr));
NS_ENSURE_SUCCESS(rv, rv);
// Ignore return value of GoToAnchor, since it will return an error
// if there is no such anchor in the document, which is actually a
// success condition for us (we want to update the session history
// with the new URI no matter whether we actually scrolled
// somewhere).
shell->GoToAnchor(uStr, scroll);
}
}
else {
// Tell the shell it's at an anchor, without scrolling.
shell->GoToAnchor(EmptyString(), PR_FALSE);
// An empty anchor was found, but if it's a load from history,
// we don't have to jump to the top of the page. Scrollbar
// position will be restored by the caller, based on positions
// stored in session history.
if (aLoadType == LOAD_HISTORY || aLoadType == LOAD_RELOAD_NORMAL)
return rv;
//An empty anchor. Scroll to the top of the page.
rv = SetCurScrollPosEx(0, 0);
}
return rv;
}
void
nsDocShell::SetupReferrerFromChannel(nsIChannel * aChannel)
{
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
if (httpChannel) {
nsCOMPtr<nsIURI> referrer;
nsresult rv = httpChannel->GetReferrer(getter_AddRefs(referrer));
if (NS_SUCCEEDED(rv)) {
SetReferrerURI(referrer);
}
}
}
PRBool
nsDocShell::OnNewURI(nsIURI * aURI, nsIChannel * aChannel,
PRUint32 aLoadType, PRBool aFireOnLocationChange,
PRBool aAddToGlobalHistory)
{
NS_ASSERTION(aURI, "uri is null");
#if defined(PR_LOGGING) && defined(DEBUG)
if (PR_LOG_TEST(gDocShellLog, PR_LOG_DEBUG)) {
nsCAutoString spec;
aURI->GetSpec(spec);
nsCAutoString chanName;
if (aChannel)
aChannel->GetName(chanName);
else
chanName.AssignLiteral("<no channel>");
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]::OnNewURI(\"%s\", [%s], 0x%x)\n", this, spec.get(),
chanName.get(), aLoadType));
}
#endif
PRBool updateHistory = PR_TRUE;
PRBool equalUri = PR_FALSE;
PRBool shAvailable = PR_TRUE;
// Get the post data from the channel
nsCOMPtr<nsIInputStream> inputStream;
if (aChannel) {
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
// Check if the HTTPChannel is hiding under a multiPartChannel
if (!httpChannel) {
GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
}
if (httpChannel) {
nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(httpChannel));
if (uploadChannel) {
uploadChannel->GetUploadStream(getter_AddRefs(inputStream));
}
}
}
/* Create SH Entry (mLSHE) only if there is a SessionHistory object (mSessionHistory) in
* the current frame or in the root docshell
*/
nsCOMPtr<nsISHistory> rootSH = mSessionHistory;
if (!rootSH) {
// Get the handle to SH from the root docshell
GetRootSessionHistory(getter_AddRefs(rootSH));
if (!rootSH)
shAvailable = PR_FALSE;
} // rootSH
// Determine if this type of load should update history.
if (aLoadType == LOAD_BYPASS_HISTORY ||
aLoadType == LOAD_ERROR_PAGE ||
aLoadType & LOAD_CMD_HISTORY ||
aLoadType & LOAD_CMD_RELOAD)
updateHistory = PR_FALSE;
// Check if the url to be loaded is the same as the one already loaded.
if (mCurrentURI)
aURI->Equals(mCurrentURI, &equalUri);
#ifdef DEBUG
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
(" shAvailable=%i updateHistory=%i equalURI=%i\n",
shAvailable, updateHistory, equalUri));
#endif
/* If the url to be loaded is the same as the one already there,
* and the original loadType is LOAD_NORMAL, LOAD_LINK, or
* LOAD_STOP_CONTENT, set loadType to LOAD_NORMAL_REPLACE so that
* AddToSessionHistory() won't mess with the current SHEntry and
* if this page has any frame children, it also will be handled
* properly. see bug 83684
*
* XXX Hopefully changing the loadType at this time will not hurt
* anywhere. The other way to take care of sequentially repeating
* frameset pages is to add new methods to nsIDocShellTreeItem.
* Hopefully I don't have to do that.
*/
if (equalUri &&
(mLoadType == LOAD_NORMAL ||
mLoadType == LOAD_LINK ||
mLoadType == LOAD_STOP_CONTENT) &&
!inputStream)
{
mLoadType = LOAD_NORMAL_REPLACE;
}
// If this is a refresh to the currently loaded url, we don't
// have to update session or global history.
if (mLoadType == LOAD_REFRESH && !inputStream && equalUri) {
SetHistoryEntry(&mLSHE, mOSHE);
}
/* If the user pressed shift-reload, cache will create a new cache key
* for the page. Save the new cacheKey in Session History.
* see bug 90098
*/
if (aChannel &&
(aLoadType == LOAD_RELOAD_BYPASS_CACHE ||
aLoadType == LOAD_RELOAD_BYPASS_PROXY ||
aLoadType == LOAD_RELOAD_BYPASS_PROXY_AND_CACHE)) {
NS_ASSERTION(!updateHistory,
"We shouldn't be updating history for forced reloads!");
nsCOMPtr<nsICachingChannel> cacheChannel(do_QueryInterface(aChannel));
nsCOMPtr<nsISupports> cacheKey;
// Get the Cache Key and store it in SH.
if (cacheChannel)
cacheChannel->GetCacheKey(getter_AddRefs(cacheKey));
// If we already have a loading history entry, store the new cache key
// in it. Otherwise, since we're doing a reload and won't be updating
// our history entry, store the cache key in our current history entry.
if (mLSHE)
mLSHE->SetCacheKey(cacheKey);
else if (mOSHE)
mOSHE->SetCacheKey(cacheKey);
}
if (updateHistory && shAvailable) {
// Update session history if necessary...
if (!mLSHE && (mItemType == typeContent) && mURIResultedInDocument) {
/* This is a fresh page getting loaded for the first time
*.Create a Entry for it and add it to SH, if this is the
* rootDocShell
*/
(void) AddToSessionHistory(aURI, aChannel, getter_AddRefs(mLSHE));
}
// Update Global history
if (aAddToGlobalHistory) {
// Get the referrer uri from the channel
AddToGlobalHistory(aURI, PR_FALSE, aChannel);
}
}
// If this was a history load, update the index in
// SH.
if (rootSH && (mLoadType & LOAD_CMD_HISTORY)) {
nsCOMPtr<nsISHistoryInternal> shInternal(do_QueryInterface(rootSH));
if (shInternal) {
rootSH->GetIndex(&mPreviousTransIndex);
shInternal->UpdateIndex();
rootSH->GetIndex(&mLoadedTransIndex);
#ifdef DEBUG_PAGE_CACHE
printf("Previous index: %d, Loaded index: %d\n\n",
mPreviousTransIndex, mLoadedTransIndex);
#endif
}
}
PRBool onLocationChangeNeeded = SetCurrentURI(aURI, aChannel,
aFireOnLocationChange);
// Make sure to store the referrer from the channel, if any
SetupReferrerFromChannel(aChannel);
return onLocationChangeNeeded;
}
PRBool
nsDocShell::OnLoadingSite(nsIChannel * aChannel, PRBool aFireOnLocationChange,
PRBool aAddToGlobalHistory)
{
nsCOMPtr<nsIURI> uri;
// If this a redirect, use the final url (uri)
// else use the original url
//
// Note that this should match what documents do (see nsDocument::Reset).
NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
NS_ENSURE_TRUE(uri, PR_FALSE);
return OnNewURI(uri, aChannel, mLoadType, aFireOnLocationChange,
aAddToGlobalHistory);
}
void
nsDocShell::SetReferrerURI(nsIURI * aURI)
{
mReferrerURI = aURI; // This assigment addrefs
}
//*****************************************************************************
// nsDocShell: Session History
//*****************************************************************************
PRBool
nsDocShell::ShouldAddToSessionHistory(nsIURI * aURI)
{
// I believe none of the about: urls should go in the history. But then
// that could just be me... If the intent is only deny about:blank then we
// should just do a spec compare, rather than two gets of the scheme and
// then the path. -Gagan
nsresult rv;
nsCAutoString buf;
rv = aURI->GetScheme(buf);
if (NS_FAILED(rv))
return PR_FALSE;
if (buf.Equals("about")) {
rv = aURI->GetPath(buf);
if (NS_FAILED(rv))
return PR_FALSE;
if (buf.Equals("blank")) {
return PR_FALSE;
}
}
return PR_TRUE;
}
nsresult
nsDocShell::AddToSessionHistory(nsIURI * aURI,
nsIChannel * aChannel, nsISHEntry ** aNewEntry)
{
#if defined(PR_LOGGING) && defined(DEBUG)
if (PR_LOG_TEST(gDocShellLog, PR_LOG_DEBUG)) {
nsCAutoString spec;
aURI->GetSpec(spec);
nsCAutoString chanName;
if (aChannel)
aChannel->GetName(chanName);
else
chanName.AssignLiteral("<no channel>");
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsDocShell[%p]::AddToSessionHistory(\"%s\", [%s])\n", this, spec.get(),
chanName.get()));
}
#endif
nsresult rv = NS_OK;
nsCOMPtr<nsISHEntry> entry;
PRBool shouldPersist;
shouldPersist = ShouldAddToSessionHistory(aURI);
// Get a handle to the root docshell
nsCOMPtr<nsIDocShellTreeItem> root;
GetSameTypeRootTreeItem(getter_AddRefs(root));
/*
* If this is a LOAD_FLAGS_REPLACE_HISTORY in a subframe, we use
* the existing SH entry in the page and replace the url and
* other vitalities.
*/
if (LOAD_TYPE_HAS_FLAGS(mLoadType, LOAD_FLAGS_REPLACE_HISTORY) &&
root != static_cast<nsIDocShellTreeItem *>(this)) {
// This is a subframe
entry = mOSHE;
nsCOMPtr<nsISHContainer> shContainer(do_QueryInterface(entry));
if (shContainer) {
PRInt32 childCount = 0;
shContainer->GetChildCount(&childCount);
// Remove all children of this entry
for (PRInt32 i = childCount - 1; i >= 0; i--) {
nsCOMPtr<nsISHEntry> child;
shContainer->GetChildAt(i, getter_AddRefs(child));
shContainer->RemoveChild(child);
} // for
} // shContainer
}
// Create a new entry if necessary.
if (!entry) {
entry = do_CreateInstance(NS_SHENTRY_CONTRACTID);
if (!entry) {
return NS_ERROR_OUT_OF_MEMORY;
}
}
// Get the post data & referrer
nsCOMPtr<nsIInputStream> inputStream;
nsCOMPtr<nsIURI> referrerURI;
nsCOMPtr<nsISupports> cacheKey;
nsCOMPtr<nsISupports> cacheToken;
nsCOMPtr<nsISupports> owner;
PRBool expired = PR_FALSE;
PRBool discardLayoutState = PR_FALSE;
if (aChannel) {
nsCOMPtr<nsICachingChannel>
cacheChannel(do_QueryInterface(aChannel));
/* If there is a caching channel, get the Cache Key and store it
* in SH.
*/
if (cacheChannel) {
cacheChannel->GetCacheKey(getter_AddRefs(cacheKey));
cacheChannel->GetCacheToken(getter_AddRefs(cacheToken));
}
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel));
// Check if the httpChannel is hiding under a multipartChannel
if (!httpChannel) {
GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
}
if (httpChannel) {
nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(httpChannel));
if (uploadChannel) {
uploadChannel->GetUploadStream(getter_AddRefs(inputStream));
}
httpChannel->GetReferrer(getter_AddRefs(referrerURI));
discardLayoutState = ShouldDiscardLayoutState(httpChannel);
}
aChannel->GetOwner(getter_AddRefs(owner));
}
//Title is set in nsDocShell::SetTitle()
entry->Create(aURI, // uri
EmptyString(), // Title
inputStream, // Post data stream
nsnull, // LayoutHistory state
cacheKey, // CacheKey
mContentTypeHint, // Content-type
owner); // Channel owner
entry->SetReferrerURI(referrerURI);
/* If cache got a 'no-store', ask SH not to store
* HistoryLayoutState. By default, SH will set this
* flag to PR_TRUE and save HistoryLayoutState.
*/
if (discardLayoutState) {
entry->SetSaveLayoutStateFlag(PR_FALSE);
}
if (cacheToken) {
// Check if the page has expired from cache
nsCOMPtr<nsICacheEntryInfo> cacheEntryInfo(do_QueryInterface(cacheToken));
if (cacheEntryInfo) {
PRUint32 expTime;
cacheEntryInfo->GetExpirationTime(&expTime);
PRUint32 now = PRTimeToSeconds(PR_Now());
if (expTime <= now)
expired = PR_TRUE;
}
}
if (expired == PR_TRUE)
entry->SetExpirationStatus(PR_TRUE);
if (root == static_cast<nsIDocShellTreeItem *>(this) && mSessionHistory) {
// This is the root docshell
if (LOAD_TYPE_HAS_FLAGS(mLoadType, LOAD_FLAGS_REPLACE_HISTORY)) {
// Replace current entry in session history.
PRInt32 index = 0;
mSessionHistory->GetIndex(&index);
nsCOMPtr<nsISHistoryInternal> shPrivate(do_QueryInterface(mSessionHistory));
// Replace the current entry with the new entry
if (shPrivate)
rv = shPrivate->ReplaceEntry(index, entry);
}
else {
// Add to session history
nsCOMPtr<nsISHistoryInternal>
shPrivate(do_QueryInterface(mSessionHistory));
NS_ENSURE_TRUE(shPrivate, NS_ERROR_FAILURE);
mSessionHistory->GetIndex(&mPreviousTransIndex);
rv = shPrivate->AddEntry(entry, shouldPersist);
mSessionHistory->GetIndex(&mLoadedTransIndex);
#ifdef DEBUG_PAGE_CACHE
printf("Previous index: %d, Loaded index: %d\n\n",
mPreviousTransIndex, mLoadedTransIndex);
#endif
}
}
else {
// This is a subframe.
if (!mOSHE || !LOAD_TYPE_HAS_FLAGS(mLoadType,
LOAD_FLAGS_REPLACE_HISTORY))
rv = DoAddChildSHEntry(entry, mChildOffset);
}
// Return the new SH entry...
if (aNewEntry) {
*aNewEntry = nsnull;
if (NS_SUCCEEDED(rv)) {
*aNewEntry = entry;
NS_ADDREF(*aNewEntry);
}
}
return rv;
}
NS_IMETHODIMP
nsDocShell::LoadHistoryEntry(nsISHEntry * aEntry, PRUint32 aLoadType)
{
if (!IsNavigationAllowed()) {
return NS_OK;
}
nsCOMPtr<nsIURI> uri;
nsCOMPtr<nsIInputStream> postData;
nsCOMPtr<nsIURI> referrerURI;
nsCAutoString contentType;
nsCOMPtr<nsISupports> owner;
NS_ENSURE_TRUE(aEntry, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(aEntry->GetURI(getter_AddRefs(uri)), NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(aEntry->GetReferrerURI(getter_AddRefs(referrerURI)),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(aEntry->GetPostData(getter_AddRefs(postData)),
NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(aEntry->GetContentType(contentType), NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(aEntry->GetOwner(getter_AddRefs(owner)),
NS_ERROR_FAILURE);
// Calling CreateAboutBlankContentViewer can set mOSHE to null, and if
// that's the only thing holding a ref to aEntry that will cause aEntry to
// die while we're loading it. So hold a strong ref to aEntry here, just
// in case.
nsCOMPtr<nsISHEntry> kungFuDeathGrip(aEntry);
PRBool isJS;
nsresult rv = uri->SchemeIs("javascript", &isJS);
if (NS_FAILED(rv) || isJS) {
// We're loading a URL that will execute script from inside asyncOpen.
// Replace the current document with about:blank now to prevent
// anything from the current document from leaking into any JavaScript
// code in the URL.
nsCOMPtr<nsIPrincipal> prin = do_QueryInterface(owner);
rv = CreateAboutBlankContentViewer(prin);
if (NS_FAILED(rv)) {
// The creation of the intermittent about:blank content
// viewer failed for some reason (potentially because the
// user prevented it). Interrupt the history load.
return NS_OK;
}
if (!owner) {
// Ensure that we have an owner. Otherwise javascript: URIs will
// pick it up from the about:blank page we just loaded, and we
// don't really want even that in this case.
owner = do_CreateInstance("@mozilla.org/nullprincipal;1");
NS_ENSURE_TRUE(owner, NS_ERROR_OUT_OF_MEMORY);
}
}
/* If there is a valid postdata *and* the user pressed
* reload or shift-reload, take user's permission before we
* repost the data to the server.
*/
if ((aLoadType & LOAD_CMD_RELOAD) && postData) {
PRBool repost;
rv = ConfirmRepost(&repost);
if (NS_FAILED(rv)) return rv;
// If the user pressed cancel in the dialog, return. We're done here.
if (!repost)
return NS_BINDING_ABORTED;
}
rv = InternalLoad(uri,
referrerURI,
owner,
INTERNAL_LOAD_FLAGS_NONE, // Do not inherit owner from document (security-critical!)
nsnull, // No window target
contentType.get(), // Type hint
postData, // Post data stream
nsnull, // No headers stream
aLoadType, // Load type
aEntry, // SHEntry
PR_TRUE,
nsnull, // No nsIDocShell
nsnull); // No nsIRequest
return rv;
}
NS_IMETHODIMP nsDocShell::GetShouldSaveLayoutState(PRBool* aShould)
{
*aShould = PR_FALSE;
if (mOSHE) {
// Don't capture historystate and save it in history
// if the page asked not to do so.
mOSHE->GetSaveLayoutStateFlag(aShould);
}
return NS_OK;
}
NS_IMETHODIMP nsDocShell::PersistLayoutHistoryState()
{
nsresult rv = NS_OK;
if (mOSHE) {
PRBool shouldSave;
GetShouldSaveLayoutState(&shouldSave);
if (!shouldSave)
return NS_OK;
nsCOMPtr<nsIPresShell> shell;
rv = GetPresShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
nsCOMPtr<nsILayoutHistoryState> layoutState;
rv = shell->CaptureHistoryState(getter_AddRefs(layoutState),
PR_TRUE);
}
}
return rv;
}
/* static */ nsresult
nsDocShell::WalkHistoryEntries(nsISHEntry *aRootEntry,
nsDocShell *aRootShell,
WalkHistoryEntriesFunc aCallback,
void *aData)
{
NS_ENSURE_TRUE(aRootEntry, NS_ERROR_FAILURE);
nsCOMPtr<nsISHContainer> container(do_QueryInterface(aRootEntry));
if (!container)
return NS_ERROR_FAILURE;
PRInt32 childCount;
container->GetChildCount(&childCount);
for (PRInt32 i = 0; i < childCount; i++) {
nsCOMPtr<nsISHEntry> childEntry;
container->GetChildAt(i, getter_AddRefs(childEntry));
if (!childEntry) {
// childEntry can be null for valid reasons, for example if the
// docshell at index i never loaded anything useful.
continue;
}
nsDocShell *childShell = nsnull;
if (aRootShell) {
// Walk the children of aRootShell and see if one of them
// has srcChild as a SHEntry.
PRInt32 childCount = aRootShell->mChildList.Count();
for (PRInt32 j = 0; j < childCount; ++j) {
nsDocShell *child =
static_cast<nsDocShell*>(aRootShell->ChildAt(j));
if (child->HasHistoryEntry(childEntry)) {
childShell = child;
break;
}
}
}
nsresult rv = aCallback(childEntry, childShell, i, aData);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
// callback data for WalkHistoryEntries
struct CloneAndReplaceData
{
CloneAndReplaceData(PRUint32 aCloneID, nsISHEntry *aReplaceEntry,
nsISHEntry *aDestTreeParent)
: cloneID(aCloneID),
replaceEntry(aReplaceEntry),
destTreeParent(aDestTreeParent) { }
PRUint32 cloneID;
nsISHEntry *replaceEntry;
nsISHEntry *destTreeParent;
nsCOMPtr<nsISHEntry> resultEntry;
};
/* static */ nsresult
nsDocShell::CloneAndReplaceChild(nsISHEntry *aEntry, nsDocShell *aShell,
PRInt32 aEntryIndex, void *aData)
{
nsresult result = NS_OK;
nsCOMPtr<nsISHEntry> dest;
CloneAndReplaceData *data = static_cast<CloneAndReplaceData*>(aData);
PRUint32 cloneID = data->cloneID;
nsISHEntry *replaceEntry = data->replaceEntry;
PRUint32 srcID;
aEntry->GetID(&srcID);
if (srcID == cloneID) {
// Just replace the entry, and don't walk the children.
dest = replaceEntry;
dest->SetIsSubFrame(PR_TRUE);
} else {
// Clone the SHEntry...
result = aEntry->Clone(getter_AddRefs(dest));
if (NS_FAILED(result))
return result;
// This entry is for a subframe navigation
dest->SetIsSubFrame(PR_TRUE);
// Walk the children
CloneAndReplaceData childData(cloneID, replaceEntry, dest);
result = WalkHistoryEntries(aEntry, aShell,
CloneAndReplaceChild, &childData);
if (NS_FAILED(result))
return result;
if (aShell)
aShell->SwapHistoryEntries(aEntry, dest);
}
nsCOMPtr<nsISHContainer> container =
do_QueryInterface(data->destTreeParent);
if (container)
container->AddChild(dest, aEntryIndex);
data->resultEntry = dest;
return result;
}
/* static */ nsresult
nsDocShell::CloneAndReplace(nsISHEntry *aSrcEntry,
nsDocShell *aSrcShell,
PRUint32 aCloneID,
nsISHEntry *aReplaceEntry,
nsISHEntry **aResultEntry)
{
NS_ENSURE_ARG_POINTER(aResultEntry);
NS_ENSURE_TRUE(aReplaceEntry, NS_ERROR_FAILURE);
CloneAndReplaceData data(aCloneID, aReplaceEntry, nsnull);
nsresult rv = CloneAndReplaceChild(aSrcEntry, aSrcShell, 0, &data);
data.resultEntry.swap(*aResultEntry);
return rv;
}
void
nsDocShell::SwapHistoryEntries(nsISHEntry *aOldEntry, nsISHEntry *aNewEntry)
{
if (aOldEntry == mOSHE)
mOSHE = aNewEntry;
if (aOldEntry == mLSHE)
mLSHE = aNewEntry;
}
struct SwapEntriesData
{
nsDocShell *ignoreShell; // constant; the shell to ignore
nsISHEntry *destTreeRoot; // constant; the root of the dest tree
nsISHEntry *destTreeParent; // constant; the node under destTreeRoot
// whose children will correspond to aEntry
};
nsresult
nsDocShell::SetChildHistoryEntry(nsISHEntry *aEntry, nsDocShell *aShell,
PRInt32 aEntryIndex, void *aData)
{
SwapEntriesData *data = static_cast<SwapEntriesData*>(aData);
nsDocShell *ignoreShell = data->ignoreShell;
if (!aShell || aShell == ignoreShell)
return NS_OK;
nsISHEntry *destTreeRoot = data->destTreeRoot;
nsCOMPtr<nsISHEntry> destEntry;
nsCOMPtr<nsISHContainer> container =
do_QueryInterface(data->destTreeParent);
if (container) {
// aEntry is a clone of some child of destTreeParent, but since the
// trees aren't necessarily in sync, we'll have to locate it.
// Note that we could set aShell's entry to null if we don't find a
// corresponding entry under destTreeParent.
PRUint32 targetID, id;
aEntry->GetID(&targetID);
// First look at the given index, since this is the common case.
nsCOMPtr<nsISHEntry> entry;
container->GetChildAt(aEntryIndex, getter_AddRefs(entry));
if (entry && NS_SUCCEEDED(entry->GetID(&id)) && id == targetID) {
destEntry.swap(entry);
} else {
PRInt32 childCount;
container->GetChildCount(&childCount);
for (PRInt32 i = 0; i < childCount; ++i) {
container->GetChildAt(i, getter_AddRefs(entry));
if (!entry)
continue;
entry->GetID(&id);
if (id == targetID) {
destEntry.swap(entry);
break;
}
}
}
} else {
destEntry = destTreeRoot;
}
aShell->SwapHistoryEntries(aEntry, destEntry);
// Now handle the children of aEntry.
SwapEntriesData childData = { ignoreShell, destTreeRoot, destEntry };
return WalkHistoryEntries(aEntry, aShell,
SetChildHistoryEntry, &childData);
}
static nsISHEntry*
GetRootSHEntry(nsISHEntry *aEntry)
{
nsCOMPtr<nsISHEntry> rootEntry = aEntry;
nsISHEntry *result = nsnull;
while (rootEntry) {
result = rootEntry;
result->GetParent(getter_AddRefs(rootEntry));
}
return result;
}
void
nsDocShell::SetHistoryEntry(nsCOMPtr<nsISHEntry> *aPtr, nsISHEntry *aEntry)
{
// We need to sync up the docshell and session history trees for
// subframe navigation. If the load was in a subframe, we forward up to
// the root docshell, which will then recursively sync up all docshells
// to their corresponding entries in the new session history tree.
// If we don't do this, then we can cache a content viewer on the wrong
// cloned entry, and subsequently restore it at the wrong time.
nsISHEntry *newRootEntry = GetRootSHEntry(aEntry);
if (newRootEntry) {
// newRootEntry is now the new root entry.
// Find the old root entry as well.
// Need a strong ref. on |oldRootEntry| so it isn't destroyed when
// SetChildHistoryEntry() does SwapHistoryEntries() (bug 304639).
nsCOMPtr<nsISHEntry> oldRootEntry = GetRootSHEntry(*aPtr);
if (oldRootEntry) {
nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
GetSameTypeParent(getter_AddRefs(parentAsItem));
nsCOMPtr<nsIDocShell> rootShell = do_QueryInterface(parentAsItem);
if (rootShell) { // if we're the root just set it, nothing to swap
SwapEntriesData data = { this, newRootEntry };
nsIDocShell *rootIDocShell =
static_cast<nsIDocShell*>(rootShell);
nsDocShell *rootDocShell = static_cast<nsDocShell*>
(rootIDocShell);
#ifdef NS_DEBUG
nsresult rv =
#endif
SetChildHistoryEntry(oldRootEntry, rootDocShell,
0, &data);
NS_ASSERTION(NS_SUCCEEDED(rv), "SetChildHistoryEntry failed");
}
}
}
*aPtr = aEntry;
}
nsresult
nsDocShell::GetRootSessionHistory(nsISHistory ** aReturn)
{
nsresult rv;
nsCOMPtr<nsIDocShellTreeItem> root;
//Get the root docshell
rv = GetSameTypeRootTreeItem(getter_AddRefs(root));
// QI to nsIWebNavigation
nsCOMPtr<nsIWebNavigation> rootAsWebnav(do_QueryInterface(root));
if (rootAsWebnav) {
// Get the handle to SH from the root docshell
rv = rootAsWebnav->GetSessionHistory(aReturn);
}
return rv;
}
nsresult
nsDocShell::GetHttpChannel(nsIChannel * aChannel, nsIHttpChannel ** aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
if (!aChannel)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIMultiPartChannel> multiPartChannel(do_QueryInterface(aChannel));
if (multiPartChannel) {
nsCOMPtr<nsIChannel> baseChannel;
multiPartChannel->GetBaseChannel(getter_AddRefs(baseChannel));
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(baseChannel));
*aReturn = httpChannel;
NS_IF_ADDREF(*aReturn);
}
return NS_OK;
}
PRBool
nsDocShell::ShouldDiscardLayoutState(nsIHttpChannel * aChannel)
{
// By default layout State will be saved.
if (!aChannel)
return PR_FALSE;
// figure out if SH should be saving layout state
nsCOMPtr<nsISupports> securityInfo;
PRBool noStore = PR_FALSE, noCache = PR_FALSE;
aChannel->GetSecurityInfo(getter_AddRefs(securityInfo));
aChannel->IsNoStoreResponse(&noStore);
aChannel->IsNoCacheResponse(&noCache);
return (noStore || (noCache && securityInfo));
}
//*****************************************************************************
// nsDocShell: nsIEditorDocShell
//*****************************************************************************
NS_IMETHODIMP nsDocShell::GetEditor(nsIEditor * *aEditor)
{
NS_ENSURE_ARG_POINTER(aEditor);
nsresult rv = EnsureEditorData();
if (NS_FAILED(rv)) return rv;
return mEditorData->GetEditor(aEditor);
}
NS_IMETHODIMP nsDocShell::SetEditor(nsIEditor * aEditor)
{
nsresult rv = EnsureEditorData();
if (NS_FAILED(rv)) return rv;
return mEditorData->SetEditor(aEditor);
}
NS_IMETHODIMP nsDocShell::GetEditable(PRBool *aEditable)
{
NS_ENSURE_ARG_POINTER(aEditable);
*aEditable = mEditorData && mEditorData->GetEditable();
return NS_OK;
}
NS_IMETHODIMP nsDocShell::GetHasEditingSession(PRBool *aHasEditingSession)
{
NS_ENSURE_ARG_POINTER(aHasEditingSession);
if (mEditorData)
{
nsCOMPtr<nsIEditingSession> editingSession;
mEditorData->GetEditingSession(getter_AddRefs(editingSession));
*aHasEditingSession = (editingSession.get() != nsnull);
}
else
{
*aHasEditingSession = PR_FALSE;
}
return NS_OK;
}
NS_IMETHODIMP nsDocShell::MakeEditable(PRBool inWaitForUriLoad)
{
nsresult rv = EnsureEditorData();
if (NS_FAILED(rv)) return rv;
return mEditorData->MakeEditable(inWaitForUriLoad);
}
nsresult
nsDocShell::AddToGlobalHistory(nsIURI * aURI, PRBool aRedirect,
nsIChannel * aChannel)
{
if (mItemType != typeContent || !mGlobalHistory)
return NS_OK;
// If this is a POST request, we do not want to include this in global
// history, so return early.
nsCOMPtr<nsIHttpChannel> hchan(do_QueryInterface(aChannel));
if (hchan) {
nsCAutoString type;
nsresult rv = hchan->GetRequestMethod(type);
if (NS_SUCCEEDED(rv) && type.EqualsLiteral("POST"))
return NS_OK;
}
PRBool visited;
nsresult rv = mGlobalHistory->IsVisited(aURI, &visited);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIURI> referrer;
if (aChannel)
NS_GetReferrerFromChannel(aChannel, getter_AddRefs(referrer));
rv = mGlobalHistory->AddURI(aURI, aRedirect, !IsFrame(), referrer);
if (NS_FAILED(rv))
return rv;
if (!visited) {
nsCOMPtr<nsIObserverService> obsService =
do_GetService("@mozilla.org/observer-service;1");
if (obsService) {
obsService->NotifyObservers(aURI, NS_LINK_VISITED_EVENT_TOPIC, nsnull);
}
}
return NS_OK;
}
//*****************************************************************************
// nsDocShell: Helper Routines
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::SetLoadType(PRUint32 aLoadType)
{
mLoadType = aLoadType;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetLoadType(PRUint32 * aLoadType)
{
*aLoadType = mLoadType;
return NS_OK;
}
nsresult
nsDocShell::ConfirmRepost(PRBool * aRepost)
{
nsresult rv;
nsCOMPtr<nsIPrompt> prompter;
CallGetInterface(this, static_cast<nsIPrompt**>(getter_AddRefs(prompter)));
nsCOMPtr<nsIStringBundleService>
stringBundleService(do_GetService(NS_STRINGBUNDLE_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIStringBundle> appBundle;
rv = stringBundleService->CreateBundle(kAppstringsBundleURL,
getter_AddRefs(appBundle));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIStringBundle> brandBundle;
rv = stringBundleService->CreateBundle(kBrandBundleURL, getter_AddRefs(brandBundle));
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(prompter && brandBundle && appBundle,
"Unable to set up repost prompter.");
nsXPIDLString brandName;
rv = brandBundle->GetStringFromName(NS_LITERAL_STRING("brandShortName").get(),
getter_Copies(brandName));
nsXPIDLString msgString, button0Title;
if (NS_FAILED(rv)) { // No brand, use the generic version.
rv = appBundle->GetStringFromName(NS_LITERAL_STRING("confirmRepostPrompt").get(),
getter_Copies(msgString));
}
else {
// Brand available - if the app has an override file with formatting, the app name will
// be included. Without an override, the prompt will look like the generic version.
const PRUnichar *formatStrings[] = { brandName.get() };
rv = appBundle->FormatStringFromName(NS_LITERAL_STRING("confirmRepostPrompt").get(),
formatStrings, NS_ARRAY_LENGTH(formatStrings),
getter_Copies(msgString));
}
if (NS_FAILED(rv)) return rv;
rv = appBundle->GetStringFromName(NS_LITERAL_STRING("resendButton.label").get(),
getter_Copies(button0Title));
if (NS_FAILED(rv)) return rv;
PRInt32 buttonPressed;
rv = prompter->
ConfirmEx(nsnull, msgString.get(),
(nsIPrompt::BUTTON_POS_0 * nsIPrompt::BUTTON_TITLE_IS_STRING) +
(nsIPrompt::BUTTON_POS_1 * nsIPrompt::BUTTON_TITLE_CANCEL),
button0Title.get(), nsnull, nsnull, nsnull, nsnull, &buttonPressed);
if (NS_FAILED(rv)) return rv;
*aRepost = (buttonPressed == 0);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetPromptAndStringBundle(nsIPrompt ** aPrompt,
nsIStringBundle ** aStringBundle)
{
NS_ENSURE_SUCCESS(GetInterface(NS_GET_IID(nsIPrompt), (void **) aPrompt),
NS_ERROR_FAILURE);
nsCOMPtr<nsIStringBundleService>
stringBundleService(do_GetService(NS_STRINGBUNDLE_CONTRACTID));
NS_ENSURE_TRUE(stringBundleService, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(stringBundleService->
CreateBundle(kAppstringsBundleURL,
aStringBundle),
NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetChildOffset(nsIDOMNode * aChild, nsIDOMNode * aParent,
PRInt32 * aOffset)
{
NS_ENSURE_ARG_POINTER(aChild || aParent);
nsCOMPtr<nsIDOMNodeList> childNodes;
NS_ENSURE_SUCCESS(aParent->GetChildNodes(getter_AddRefs(childNodes)),
NS_ERROR_FAILURE);
NS_ENSURE_TRUE(childNodes, NS_ERROR_FAILURE);
PRInt32 i = 0;
for (; PR_TRUE; i++) {
nsCOMPtr<nsIDOMNode> childNode;
NS_ENSURE_SUCCESS(childNodes->Item(i, getter_AddRefs(childNode)),
NS_ERROR_FAILURE);
NS_ENSURE_TRUE(childNode, NS_ERROR_FAILURE);
if (childNode.get() == aChild) {
*aOffset = i;
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::GetRootScrollableView(nsIScrollableView ** aOutScrollView)
{
NS_ENSURE_ARG_POINTER(aOutScrollView);
nsCOMPtr<nsIPresShell> shell;
NS_ENSURE_SUCCESS(GetPresShell(getter_AddRefs(shell)), NS_ERROR_FAILURE);
NS_ENSURE_TRUE(shell, NS_ERROR_NULL_POINTER);
NS_ENSURE_SUCCESS(shell->GetViewManager()->GetRootScrollableView(aOutScrollView),
NS_ERROR_FAILURE);
if (*aOutScrollView == nsnull) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::EnsureScriptEnvironment()
{
if (mScriptGlobal)
return NS_OK;
if (mIsBeingDestroyed) {
return NS_ERROR_NOT_AVAILABLE;
}
#ifdef DEBUG
NS_ASSERTION(!mInEnsureScriptEnv,
"Infinite loop! Calling EnsureScriptEnvironment() from "
"within EnsureScriptEnvironment()!");
// Yeah, this isn't re-entrant safe, but that's ok since if we
// re-enter this method, we'll infinitely loop...
mInEnsureScriptEnv = PR_TRUE;
#endif
nsCOMPtr<nsIDOMScriptObjectFactory> factory =
do_GetService(kDOMScriptObjectFactoryCID);
NS_ENSURE_TRUE(factory, NS_ERROR_FAILURE);
nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(mTreeOwner));
NS_ENSURE_TRUE(browserChrome, NS_ERROR_NOT_AVAILABLE);
PRUint32 chromeFlags;
browserChrome->GetChromeFlags(&chromeFlags);
PRBool isModalContentWindow =
(chromeFlags & nsIWebBrowserChrome::CHROME_MODAL) &&
!(chromeFlags & nsIWebBrowserChrome::CHROME_OPENAS_CHROME);
// If our window is modal and we're not opened as chrome, make
// this window a modal content window.
factory->NewScriptGlobalObject(mItemType == typeChrome,
isModalContentWindow,
getter_AddRefs(mScriptGlobal));
NS_ENSURE_TRUE(mScriptGlobal, NS_ERROR_FAILURE);
nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(mScriptGlobal));
win->SetDocShell(static_cast<nsIDocShell *>(this));
// Ensure the script object is set to run javascript - other languages
// setup on demand.
// XXXmarkh - should this be setup to run the default language for this doc?
nsresult rv;
rv = mScriptGlobal->EnsureScriptEnvironment(nsIProgrammingLanguage::JAVASCRIPT);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef DEBUG
mInEnsureScriptEnv = PR_FALSE;
#endif
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::EnsureEditorData()
{
if (!mEditorData && !mIsBeingDestroyed)
{
mEditorData = new nsDocShellEditorData(this);
if (!mEditorData) return NS_ERROR_OUT_OF_MEMORY;
}
return mEditorData ? NS_OK : NS_ERROR_NOT_AVAILABLE;
}
nsresult
nsDocShell::EnsureTransferableHookData()
{
if (!mTransferableHookData) {
mTransferableHookData = new nsTransferableHookData();
if (!mTransferableHookData) return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
NS_IMETHODIMP nsDocShell::EnsureFind()
{
nsresult rv;
if (!mFind)
{
mFind = do_CreateInstance("@mozilla.org/embedcomp/find;1", &rv);
if (NS_FAILED(rv)) return rv;
}
// we promise that the nsIWebBrowserFind that we return has been set
// up to point to the focused, or content window, so we have to
// set that up each time.
nsIScriptGlobalObject* scriptGO = GetScriptGlobalObject();
NS_ENSURE_TRUE(scriptGO, NS_ERROR_UNEXPECTED);
// default to our window
nsCOMPtr<nsIDOMWindow> rootWindow = do_QueryInterface(scriptGO);
nsCOMPtr<nsIDOMWindow> windowToSearch = rootWindow;
// if we can, search the focused window
nsCOMPtr<nsPIDOMWindow> ourWindow = do_QueryInterface(scriptGO);
nsIFocusController *focusController = nsnull;
if (ourWindow)
focusController = ourWindow->GetRootFocusController();
if (focusController)
{
nsCOMPtr<nsIDOMWindowInternal> focusedWindow;
focusController->GetFocusedWindow(getter_AddRefs(focusedWindow));
if (focusedWindow)
windowToSearch = focusedWindow;
}
nsCOMPtr<nsIWebBrowserFindInFrames> findInFrames = do_QueryInterface(mFind);
if (!findInFrames) return NS_ERROR_NO_INTERFACE;
rv = findInFrames->SetRootSearchFrame(rootWindow);
if (NS_FAILED(rv)) return rv;
rv = findInFrames->SetCurrentSearchFrame(windowToSearch);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
PRBool
nsDocShell::IsFrame()
{
nsCOMPtr<nsIDocShellTreeItem> parent =
do_QueryInterface(GetAsSupports(mParent));
if (parent) {
PRInt32 parentType = ~mItemType; // Not us
parent->GetItemType(&parentType);
if (parentType == mItemType) // This is a frame
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP
nsDocShell::GetHasFocus(PRBool *aHasFocus)
{
*aHasFocus = mHasFocus;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetHasFocus(PRBool aHasFocus)
{
#ifdef DEBUG_DOCSHELL_FOCUS
printf(">>>>>>>>>> nsDocShell::SetHasFocus: %p %s\n", (void*)this,
aHasFocus?"Yes":"No");
#endif
mHasFocus = aHasFocus;
nsDocShellFocusController* dsfc = nsDocShellFocusController::GetInstance();
if (dsfc && aHasFocus) {
dsfc->Focus(this);
}
if (!aHasFocus) {
// We may be in a situation where the focus outline was shown
// on this document because the user tabbed into it, but the focus
// is now switching to another document via a click. In this case,
// we need to make sure the focus outline is removed from this document.
SetCanvasHasFocus(PR_FALSE);
}
return NS_OK;
}
// Find an nsICanvasFrame under aFrame. Only search the principal
// child lists. aFrame must be non-null.
static nsICanvasFrame* FindCanvasFrame(nsIFrame* aFrame)
{
nsICanvasFrame* canvasFrame;
if (NS_SUCCEEDED(CallQueryInterface(aFrame, &canvasFrame))) {
return canvasFrame;
}
nsIFrame* kid = aFrame->GetFirstChild(nsnull);
while (kid) {
canvasFrame = FindCanvasFrame(kid);
if (canvasFrame) {
return canvasFrame;
}
kid = kid->GetNextSibling();
}
return nsnull;
}
//-------------------------------------------------------
// Tells the HTMLFrame/CanvasFrame that is now has focus
NS_IMETHODIMP
nsDocShell::SetCanvasHasFocus(PRBool aCanvasHasFocus)
{
if (mEditorData && mEditorData->GetEditable())
return NS_ERROR_NOT_AVAILABLE;
nsCOMPtr<nsIPresShell> presShell;
GetPresShell(getter_AddRefs(presShell));
if (!presShell) return NS_ERROR_FAILURE;
nsIDocument *doc = presShell->GetDocument();
if (!doc) return NS_ERROR_FAILURE;
nsIContent *rootContent = doc->GetRootContent();
if (rootContent) {
nsIFrame* frame = presShell->GetPrimaryFrameFor(rootContent);
if (frame) {
frame = frame->GetParent();
if (frame) {
nsICanvasFrame* canvasFrame;
if (NS_SUCCEEDED(CallQueryInterface(frame, &canvasFrame))) {
return canvasFrame->SetHasFocus(aCanvasHasFocus);
}
}
}
} else {
// Look for the frame the hard way
nsIFrame* frame = presShell->GetRootFrame();
if (frame) {
nsICanvasFrame* canvasFrame = FindCanvasFrame(frame);
if (canvasFrame) {
return canvasFrame->SetHasFocus(aCanvasHasFocus);
}
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDocShell::GetCanvasHasFocus(PRBool *aCanvasHasFocus)
{
return NS_ERROR_FAILURE;
}
/* boolean IsBeingDestroyed (); */
NS_IMETHODIMP
nsDocShell::IsBeingDestroyed(PRBool *aDoomed)
{
NS_ENSURE_ARG(aDoomed);
*aDoomed = mIsBeingDestroyed;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetIsExecutingOnLoadHandler(PRBool *aResult)
{
NS_ENSURE_ARG(aResult);
*aResult = mIsExecutingOnLoadHandler;
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::GetLayoutHistoryState(nsILayoutHistoryState **aLayoutHistoryState)
{
if (mOSHE)
mOSHE->GetLayoutHistoryState(aLayoutHistoryState);
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::SetLayoutHistoryState(nsILayoutHistoryState *aLayoutHistoryState)
{
if (mOSHE)
mOSHE->SetLayoutHistoryState(aLayoutHistoryState);
return NS_OK;
}
//*****************************************************************************
//*** nsRefreshTimer: Object Management
//*****************************************************************************
nsRefreshTimer::nsRefreshTimer()
: mDelay(0), mRepeat(PR_FALSE), mMetaRefresh(PR_FALSE)
{
}
nsRefreshTimer::~nsRefreshTimer()
{
}
//*****************************************************************************
// nsRefreshTimer::nsISupports
//*****************************************************************************
NS_IMPL_THREADSAFE_ADDREF(nsRefreshTimer)
NS_IMPL_THREADSAFE_RELEASE(nsRefreshTimer)
NS_INTERFACE_MAP_BEGIN(nsRefreshTimer)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsITimerCallback)
NS_INTERFACE_MAP_ENTRY(nsITimerCallback)
NS_INTERFACE_MAP_END_THREADSAFE
///*****************************************************************************
// nsRefreshTimer::nsITimerCallback
//******************************************************************************
NS_IMETHODIMP
nsRefreshTimer::Notify(nsITimer * aTimer)
{
NS_ASSERTION(mDocShell, "DocShell is somehow null");
if (mDocShell && aTimer) {
// Get the delay count to determine load type
PRUint32 delay = 0;
aTimer->GetDelay(&delay);
nsCOMPtr<nsIRefreshURI> refreshURI = do_QueryInterface(mDocShell);
if (refreshURI)
refreshURI->ForceRefreshURI(mURI, delay, mMetaRefresh);
}
return NS_OK;
}
//*****************************************************************************
//*** nsDocShellFocusController: Object Management
//*****************************************************************************
void
nsDocShellFocusController::Focus(nsIDocShell* aDocShell)
{
#ifdef DEBUG_DOCSHELL_FOCUS
printf("****** nsDocShellFocusController Focus To: %p Blur To: %p\n",
(void*)aDocShell, (void*)mFocusedDocShell);
#endif
if (aDocShell != mFocusedDocShell) {
if (mFocusedDocShell) {
mFocusedDocShell->SetHasFocus(PR_FALSE);
}
mFocusedDocShell = aDocShell;
}
}
//--------------------------------------------------
// This is need for when the document with focus goes away
void
nsDocShellFocusController::ClosingDown(nsIDocShell* aDocShell)
{
if (aDocShell == mFocusedDocShell) {
mFocusedDocShell = nsnull;
}
}
//*****************************************************************************
// nsDocShell::InterfaceRequestorProxy
//*****************************************************************************
nsDocShell::InterfaceRequestorProxy::InterfaceRequestorProxy(nsIInterfaceRequestor* p)
{
if (p) {
mWeakPtr = do_GetWeakReference(p);
}
}
nsDocShell::InterfaceRequestorProxy::~InterfaceRequestorProxy()
{
mWeakPtr = nsnull;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(nsDocShell::InterfaceRequestorProxy, nsIInterfaceRequestor)
NS_IMETHODIMP
nsDocShell::InterfaceRequestorProxy::GetInterface(const nsIID & aIID, void **aSink)
{
NS_ENSURE_ARG_POINTER(aSink);
nsCOMPtr<nsIInterfaceRequestor> ifReq = do_QueryReferent(mWeakPtr);
if (ifReq) {
return ifReq->GetInterface(aIID, aSink);
}
*aSink = nsnull;
return NS_NOINTERFACE;
}
nsresult
nsDocShell::SetBaseUrlForWyciwyg(nsIContentViewer * aContentViewer)
{
if (!aContentViewer)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIURI> baseURI;
nsCOMPtr<nsIDocument> document;
nsresult rv = NS_ERROR_NOT_AVAILABLE;
if (sURIFixup)
rv = sURIFixup->CreateExposableURI(mCurrentURI,
getter_AddRefs(baseURI));
// Get the current document and set the base uri
if (baseURI) {
nsCOMPtr<nsIDocumentViewer> docViewer(do_QueryInterface(aContentViewer));
if (docViewer) {
rv = docViewer->GetDocument(getter_AddRefs(document));
if (document)
rv = document->SetBaseURI(baseURI);
}
}
return rv;
}
//*****************************************************************************
// nsDocShell::nsIAuthPromptProvider
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::GetAuthPrompt(PRUint32 aPromptReason, const nsIID& iid,
void** aResult)
{
// a priority prompt request will override a false mAllowAuth setting
PRBool priorityPrompt = (aPromptReason == PROMPT_PROXY);
if (!mAllowAuth && !priorityPrompt)
return NS_ERROR_NOT_AVAILABLE;
// we're either allowing auth, or it's a proxy request
nsresult rv;
nsCOMPtr<nsIPromptFactory> wwatch =
do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = EnsureScriptEnvironment();
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMWindow> window(do_QueryInterface(mScriptGlobal));
// Get the an auth prompter for our window so that the parenting
// of the dialogs works as it should when using tabs.
return wwatch->GetPrompt(window, iid,
reinterpret_cast<void**>(aResult));
}
//*****************************************************************************
// nsDocShell::nsIObserver
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::Observe(nsISupports *aSubject, const char *aTopic,
const PRUnichar *aData)
{
nsresult rv = NS_OK;
if (mObserveErrorPages &&
!nsCRT::strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID) &&
!nsCRT::strcmp(aData,
NS_LITERAL_STRING("browser.xul.error_pages.enabled").get())) {
nsCOMPtr<nsIPrefBranch> prefs(do_QueryInterface(aSubject, &rv));
NS_ENSURE_SUCCESS(rv, rv);
PRBool tmpbool;
rv = prefs->GetBoolPref("browser.xul.error_pages.enabled", &tmpbool);
if (NS_SUCCEEDED(rv))
mUseErrorPages = tmpbool;
} else {
rv = NS_ERROR_UNEXPECTED;
}
return rv;
}
/* static */
nsresult
nsDocShell::URIInheritsSecurityContext(nsIURI* aURI, PRBool* aResult)
{
// Note: about:blank URIs do NOT inherit the security context from the
// current document, which is what this function tests for...
return NS_URIChainHasFlags(aURI,
nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
aResult);
}
/* static */
PRBool
nsDocShell::IsAboutBlank(nsIURI* aURI)
{
NS_PRECONDITION(aURI, "Must have URI");
// GetSpec can be expensive for some URIs, so check the scheme first.
PRBool isAbout = PR_FALSE;
if (NS_FAILED(aURI->SchemeIs("about", &isAbout)) || !isAbout) {
return PR_FALSE;
}
nsCAutoString str;
aURI->GetSpec(str);
return str.EqualsLiteral("about:blank");
}
PRBool
nsDocShell::IsOKToLoadURI(nsIURI* aURI)
{
NS_PRECONDITION(aURI, "Must have a URI!");
if (!mFiredUnloadEvent) {
return PR_TRUE;
}
if (!mLoadingURI) {
return PR_FALSE;
}
nsCOMPtr<nsIScriptSecurityManager> secMan =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
return
secMan &&
NS_SUCCEEDED(secMan->CheckSameOriginURI(aURI, mLoadingURI, PR_FALSE));
}
//*****************************************************************************
// nsClassifierCallback
//*****************************************************************************
NS_IMPL_THREADSAFE_ISUPPORTS2(nsClassifierCallback,
nsIURIClassifierCallback,
nsIRunnable)
NS_IMETHODIMP
nsClassifierCallback::Run()
{
if (!mChannel) {
return NS_OK;
}
NS_ASSERTION(!mSuspendedChannel,
"nsClassifierCallback::Run() called while a "
"channel is still suspended.");
nsCOMPtr<nsIChannel> channel;
channel.swap(mChannel);
// Don't bother to run the classifier on a load that has already failed.
// (this might happen after a redirect)
PRUint32 status;
channel->GetStatus(&status);
if (NS_FAILED(status))
return NS_OK;
// Don't bother to run the classifier on a cached load that was
// previously classified.
if (HasBeenClassified()) {
return NS_OK;
}
nsCOMPtr<nsIURI> uri;
nsresult rv = channel->GetURI(getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
// Don't bother checking certain types of URIs.
PRBool hasFlags;
rv = NS_URIChainHasFlags(uri,
nsIProtocolHandler::URI_DANGEROUS_TO_LOAD,
&hasFlags);
NS_ENSURE_SUCCESS(rv, rv);
if (hasFlags) return NS_OK;
rv = NS_URIChainHasFlags(uri,
nsIProtocolHandler::URI_IS_LOCAL_FILE,
&hasFlags);
NS_ENSURE_SUCCESS(rv, rv);
if (hasFlags) return NS_OK;
rv = NS_URIChainHasFlags(uri,
nsIProtocolHandler::URI_IS_UI_RESOURCE,
&hasFlags);
NS_ENSURE_SUCCESS(rv, rv);
if (hasFlags) return NS_OK;
nsCOMPtr<nsIURIClassifier> uriClassifier =
do_GetService(NS_URICLASSIFIERSERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
PRBool expectCallback;
rv = uriClassifier->Classify(uri, this, &expectCallback);
if (NS_FAILED(rv)) return rv;
if (expectCallback) {
// Suspend the channel, it will be resumed when we get the classifier
// callback.
rv = channel->Suspend();
if (NS_FAILED(rv)) {
// Some channels (including nsJSChannel) fail on Suspend. This
// shouldn't be fatal, but will prevent malware from being
// blocked on these channels.
return NS_OK;
}
mSuspendedChannel = channel;
#ifdef DEBUG
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsClassifierCallback[%p]: suspended channel %p",
this, mSuspendedChannel.get()));
#endif
}
return NS_OK;
}
// Note in the cache entry that this URL was classified, so that future
// cached loads don't need to be checked.
void
nsClassifierCallback::MarkEntryClassified(nsresult status)
{
nsCOMPtr<nsICachingChannel> cachingChannel =
do_QueryInterface(mSuspendedChannel);
if (!cachingChannel) {
return;
}
nsCOMPtr<nsISupports> cacheToken;
cachingChannel->GetCacheToken(getter_AddRefs(cacheToken));
if (!cacheToken) {
return;
}
nsCOMPtr<nsICacheEntryDescriptor> cacheEntry =
do_QueryInterface(cacheToken);
if (!cacheEntry) {
return;
}
cacheEntry->SetMetaDataElement("docshell:classified",
NS_SUCCEEDED(status) ? "1" : nsnull);
}
PRBool
nsClassifierCallback::HasBeenClassified()
{
nsCOMPtr<nsICachingChannel> cachingChannel =
do_QueryInterface(mSuspendedChannel);
if (!cachingChannel) {
return PR_FALSE;
}
// Only check the tag if we are loading from the cache without
// validation.
PRBool fromCache;
if (NS_FAILED(cachingChannel->IsFromCache(&fromCache)) || !fromCache) {
return PR_FALSE;
}
nsCOMPtr<nsISupports> cacheToken;
cachingChannel->GetCacheToken(getter_AddRefs(cacheToken));
if (!cacheToken) {
return PR_FALSE;
}
nsCOMPtr<nsICacheEntryDescriptor> cacheEntry =
do_QueryInterface(cacheToken);
if (!cacheEntry) {
return PR_FALSE;
}
nsXPIDLCString tag;
cacheEntry->GetMetaDataElement("docshell:classified", getter_Copies(tag));
return tag.EqualsLiteral("1");
}
NS_IMETHODIMP
nsClassifierCallback::OnClassifyComplete(nsresult aErrorCode)
{
if (mSuspendedChannel) {
MarkEntryClassified(aErrorCode);
if (NS_FAILED(aErrorCode)) {
#ifdef DEBUG
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsClassifierCallback[%p]: cancelling channel %p with error code: %d",
this, mSuspendedChannel.get(), aErrorCode));
#endif
mSuspendedChannel->Cancel(aErrorCode);
}
#ifdef DEBUG
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsClassifierCallback[%p]: resuming channel %p from OnClassifyComplete",
this, mSuspendedChannel.get()));
#endif
mSuspendedChannel->Resume();
mSuspendedChannel = nsnull;
}
return NS_OK;
}
void
nsClassifierCallback::Cancel()
{
if (mSuspendedChannel) {
#ifdef DEBUG
PR_LOG(gDocShellLog, PR_LOG_DEBUG,
("nsClassifierCallback[%p]: resuming channel %p from Cancel()",
this, mSuspendedChannel.get()));
#endif
mSuspendedChannel->Resume();
mSuspendedChannel = nsnull;
}
if (mChannel) {
mChannel = nsnull;
}
}
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