gecko-dev/docshell/base/nsDocShell.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=4 sw=4 et tw=80:
*
* ***** 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>
*
* 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 ***** */
#ifndef nsDocShell_h__
#define nsDocShell_h__
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIContentViewer.h"
#include "nsInterfaceHashtable.h"
#include "nsIScriptContext.h"
#include "nsITimer.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShellTreeNode.h"
#include "nsIBaseWindow.h"
#include "nsIScrollable.h"
#include "nsITextScroll.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIContentViewerContainer.h"
#include "nsDocLoader.h"
#include "nsIURILoader.h"
#include "nsIEditorDocShell.h"
#include "nsWeakReference.h"
// Local Includes
#include "nsDSURIContentListener.h"
#include "nsDocShellEditorData.h"
// Helper Classes
#include "nsCOMPtr.h"
#include "nsPoint.h" // mCurrent/mDefaultScrollbarPreferences
#include "nsString.h"
#include "nsAutoPtr.h"
#include "nsThreadUtils.h"
// Threshold value in ms for META refresh based redirects
#define REFRESH_REDIRECT_TIMER 15000
// Interfaces Needed
#include "nsIDocumentCharsetInfo.h"
#include "nsIDocCharset.h"
#include "nsIGlobalHistory2.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPrompt.h"
#include "nsIRefreshURI.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptGlobalObjectOwner.h"
#include "nsISHistory.h"
#include "nsILayoutHistoryState.h"
#include "nsIStringBundle.h"
#include "nsISupportsArray.h"
#include "nsIWebNavigation.h"
#include "nsIWebPageDescriptor.h"
#include "nsIWebProgressListener.h"
#include "nsISHContainer.h"
#include "nsIDocShellLoadInfo.h"
#include "nsIDocShellHistory.h"
#include "nsIURIFixup.h"
#include "nsIWebBrowserFind.h"
#include "nsIHttpChannel.h"
#include "nsDocShellTransferableHooks.h"
#include "nsIAuthPromptProvider.h"
#include "nsISecureBrowserUI.h"
#include "nsIObserver.h"
#include "nsDocShellLoadTypes.h"
#include "nsIDOMEventTarget.h"
#include "nsILoadContext.h"
#include "nsIWidget.h"
#include "nsIWebShellServices.h"
#include "nsILinkHandler.h"
#include "nsIClipboardCommands.h"
#include "nsICommandManager.h"
#include "nsCRT.h"
class nsDocShell;
class nsIController;
class OnLinkClickEvent;
class nsIScrollableFrame;
class nsDOMNavigationTiming;
/* load commands were moved to nsIDocShell.h */
/* load types were moved to nsDocShellLoadTypes.h */
/* internally used ViewMode types */
enum ViewMode {
viewNormal = 0x0,
viewSource = 0x1
};
//*****************************************************************************
//*** nsRefreshTimer
//*****************************************************************************
class nsRefreshTimer : public nsITimerCallback
{
public:
nsRefreshTimer();
NS_DECL_ISUPPORTS
NS_DECL_NSITIMERCALLBACK
PRInt32 GetDelay() { return mDelay ;}
nsRefPtr<nsDocShell> mDocShell;
nsCOMPtr<nsIURI> mURI;
PRInt32 mDelay;
bool mRepeat;
bool mMetaRefresh;
protected:
virtual ~nsRefreshTimer();
};
#define NS_ERROR_DOCSHELL_REQUEST_REJECTED NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_GENERAL,1001)
typedef enum {
eCharsetReloadInit,
eCharsetReloadRequested,
eCharsetReloadStopOrigional
} eCharsetReloadState;
//*****************************************************************************
//*** nsDocShell
//*****************************************************************************
class nsDocShell : public nsDocLoader,
public nsIDocShell,
public nsIDocShellTreeItem,
public nsIDocShellHistory,
public nsIWebNavigation,
public nsIBaseWindow,
public nsIScrollable,
public nsITextScroll,
public nsIDocCharset,
1999-11-23 13:15:10 +03:00
public nsIContentViewerContainer,
public nsIScriptGlobalObjectOwner,
public nsIRefreshURI,
public nsIWebProgressListener,
public nsIEditorDocShell,
public nsIWebPageDescriptor,
public nsIAuthPromptProvider,
public nsIObserver,
public nsILoadContext,
public nsIWebShellServices,
public nsILinkHandler,
public nsIClipboardCommands
{
friend class nsDSURIContentListener;
public:
// Object Management
nsDocShell();
NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
virtual nsresult Init();
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOCSHELL
NS_DECL_NSIDOCSHELLTREEITEM
NS_DECL_NSIDOCSHELLTREENODE
NS_DECL_NSIDOCSHELLHISTORY
NS_DECL_NSIWEBNAVIGATION
NS_DECL_NSIBASEWINDOW
NS_DECL_NSISCROLLABLE
NS_DECL_NSITEXTSCROLL
NS_DECL_NSIDOCCHARSET
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSIWEBPROGRESSLISTENER
NS_DECL_NSIREFRESHURI
NS_DECL_NSICONTENTVIEWERCONTAINER
NS_DECL_NSIEDITORDOCSHELL
NS_DECL_NSIWEBPAGEDESCRIPTOR
NS_DECL_NSIAUTHPROMPTPROVIDER
NS_DECL_NSIOBSERVER
NS_DECL_NSILOADCONTEXT
NS_DECL_NSICLIPBOARDCOMMANDS
NS_DECL_NSIWEBSHELLSERVICES
NS_IMETHOD Stop() {
// Need this here because otherwise nsIWebNavigation::Stop
// overrides the docloader's Stop()
return nsDocLoader::Stop();
}
// Need to implement (and forward) nsISecurityEventSink, because
// nsIWebProgressListener has methods with identical names...
NS_FORWARD_NSISECURITYEVENTSINK(nsDocLoader::)
// nsILinkHandler
NS_IMETHOD OnLinkClick(nsIContent* aContent,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream,
nsIInputStream* aHeadersDataStream,
bool aIsTrusted);
NS_IMETHOD OnLinkClickSync(nsIContent* aContent,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream = 0,
nsIInputStream* aHeadersDataStream = 0,
nsIDocShell** aDocShell = 0,
nsIRequest** aRequest = 0);
NS_IMETHOD OnOverLink(nsIContent* aContent,
nsIURI* aURI,
const PRUnichar* aTargetSpec);
NS_IMETHOD OnLeaveLink();
nsDocShellInfoLoadType ConvertLoadTypeToDocShellLoadInfo(PRUint32 aLoadType);
PRUint32 ConvertDocShellLoadInfoToLoadType(nsDocShellInfoLoadType aDocShellLoadType);
// nsIScriptGlobalObjectOwner methods
virtual nsIScriptGlobalObject* GetScriptGlobalObject();
// Restores a cached presentation from history (mLSHE).
// This method swaps out the content viewer and simulates loads for
// subframes. It then simulates the completion of the toplevel load.
nsresult RestoreFromHistory();
// Perform a URI load from a refresh timer. This is just like the
// ForceRefreshURI method on nsIRefreshURI, but makes sure to take
// the timer involved out of mRefreshURIList if it's there.
// aTimer must not be null.
nsresult ForceRefreshURIFromTimer(nsIURI * aURI, PRInt32 aDelay,
bool aMetaRefresh, nsITimer* aTimer);
friend class OnLinkClickEvent;
// We need dummy OnLocationChange in some cases to update the UI without
// updating security info.
void FireDummyOnLocationChange()
{
FireOnLocationChange(this, nsnull, mCurrentURI,
LOCATION_CHANGE_SAME_DOCUMENT);
}
nsresult HistoryTransactionRemoved(PRInt32 aIndex);
protected:
// Object Management
virtual ~nsDocShell();
virtual void DestroyChildren();
// Content Viewer Management
NS_IMETHOD EnsureContentViewer();
// aPrincipal can be passed in if the caller wants. If null is
// passed in, the about:blank principal will end up being used.
nsresult CreateAboutBlankContentViewer(nsIPrincipal* aPrincipal,
nsIURI* aBaseURI,
bool aTryToSaveOldPresentation = true);
NS_IMETHOD CreateContentViewer(const char * aContentType,
nsIRequest * request, nsIStreamListener ** aContentHandler);
NS_IMETHOD NewContentViewerObj(const char * aContentType,
nsIRequest * request, nsILoadGroup * aLoadGroup,
nsIStreamListener ** aContentHandler, nsIContentViewer ** aViewer);
NS_IMETHOD SetupNewViewer(nsIContentViewer * aNewViewer);
void SetupReferrerFromChannel(nsIChannel * aChannel);
NS_IMETHOD GetEldestPresContext(nsPresContext** aPresContext);
// Get the principal that we'll set on the channel if we're inheriting. If
// aConsiderCurrentDocument is true, we try to use the current document if
// at all possible. If that fails, we fall back on the parent document.
// If that fails too, we force creation of a content viewer and use the
// resulting principal. If aConsiderCurrentDocument is false, we just look
// at the parent.
nsIPrincipal* GetInheritedPrincipal(bool aConsiderCurrentDocument);
// True if when loading aURI into this docshell, the channel should look
// for an appropriate application cache.
bool ShouldCheckAppCache(nsIURI * aURI);
// Actually open a channel and perform a URI load. Note: whatever owner is
// passed to this function will be set on the channel. Callers who wish to
// not have an owner on the channel should just pass null.
virtual nsresult DoURILoad(nsIURI * aURI,
nsIURI * aReferrer,
bool aSendReferrer,
nsISupports * aOwner,
const char * aTypeHint,
nsIInputStream * aPostData,
nsIInputStream * aHeadersData,
bool firstParty,
nsIDocShell ** aDocShell,
nsIRequest ** aRequest,
bool aIsNewWindowTarget,
bool aBypassClassifier,
bool aForceAllowCookies);
NS_IMETHOD AddHeadersToChannel(nsIInputStream * aHeadersData,
nsIChannel * aChannel);
virtual nsresult DoChannelLoad(nsIChannel * aChannel,
nsIURILoader * aURILoader,
bool aBypassClassifier);
nsresult ScrollToAnchor(nsACString & curHash, nsACString & newHash,
PRUint32 aLoadType);
// Tries to serialize a given variant using structured clone. This only
// works if the variant is backed by a JSVal.
nsresult SerializeJSValVariant(JSContext *aCx, nsIVariant *aData,
nsAString &aResult);
// Returns true if would have called FireOnLocationChange,
// but did not because aFireOnLocationChange was false on entry.
// In this case it is the caller's responsibility to ensure
// FireOnLocationChange is called.
// In all other cases false is returned.
bool OnLoadingSite(nsIChannel * aChannel,
bool aFireOnLocationChange,
bool aAddToGlobalHistory = true);
// Returns true if would have called FireOnLocationChange,
// but did not because aFireOnLocationChange was false on entry.
// In this case it is the caller's responsibility to ensure
// FireOnLocationChange is called.
// In all other cases false is returned.
// Either aChannel or aOwner must be null. If aChannel is
// present, the owner should be gotten from it.
// If OnNewURI calls AddToSessionHistory, it will pass its
// aCloneSHChildren argument as aCloneChildren.
bool OnNewURI(nsIURI * aURI, nsIChannel * aChannel, nsISupports* aOwner,
PRUint32 aLoadType,
bool aFireOnLocationChange,
bool aAddToGlobalHistory,
bool aCloneSHChildren);
virtual void SetReferrerURI(nsIURI * aURI);
// Session History
virtual bool ShouldAddToSessionHistory(nsIURI * aURI);
// Either aChannel or aOwner must be null. If aChannel is
// present, the owner should be gotten from it.
// If aCloneChildren is true, then our current session history's
// children will be cloned onto the new entry. This should be
// used when we aren't actually changing the document while adding
// the new session history entry.
virtual nsresult AddToSessionHistory(nsIURI * aURI, nsIChannel * aChannel,
nsISupports* aOwner,
bool aCloneChildren,
nsISHEntry ** aNewEntry);
nsresult DoAddChildSHEntry(nsISHEntry* aNewEntry, PRInt32 aChildOffset,
bool aCloneChildren);
NS_IMETHOD LoadHistoryEntry(nsISHEntry * aEntry, PRUint32 aLoadType);
NS_IMETHOD PersistLayoutHistoryState();
// Clone a session history tree for subframe navigation.
// The tree rooted at |aSrcEntry| will be cloned into |aDestEntry|, except
// for the entry with id |aCloneID|, which will be replaced with
// |aReplaceEntry|. |aSrcShell| is a (possibly null) docshell which
// corresponds to |aSrcEntry| via its mLSHE or mOHE pointers, and will
// have that pointer updated to point to the cloned history entry.
// If aCloneChildren is true then the children of the entry with id
// |aCloneID| will be cloned into |aReplaceEntry|.
static nsresult CloneAndReplace(nsISHEntry *aSrcEntry,
nsDocShell *aSrcShell,
PRUint32 aCloneID,
nsISHEntry *aReplaceEntry,
bool aCloneChildren,
nsISHEntry **aDestEntry);
// Child-walking callback for CloneAndReplace
static nsresult CloneAndReplaceChild(nsISHEntry *aEntry,
nsDocShell *aShell,
PRInt32 aChildIndex, void *aData);
nsresult GetRootSessionHistory(nsISHistory ** aReturn);
nsresult GetHttpChannel(nsIChannel * aChannel, nsIHttpChannel ** aReturn);
bool ShouldDiscardLayoutState(nsIHttpChannel * aChannel);
// Determine whether this docshell corresponds to the given history entry,
// via having a pointer to it in mOSHE or mLSHE.
bool HasHistoryEntry(nsISHEntry *aEntry) const
{
return aEntry && (aEntry == mOSHE || aEntry == mLSHE);
}
// Update any pointers (mOSHE or mLSHE) to aOldEntry to point to aNewEntry
void SwapHistoryEntries(nsISHEntry *aOldEntry, nsISHEntry *aNewEntry);
// Call this method to swap in a new history entry to m[OL]SHE, rather than
// setting it directly. This completes the navigation in all docshells
// in the case of a subframe navigation.
void SetHistoryEntry(nsCOMPtr<nsISHEntry> *aPtr, nsISHEntry *aEntry);
// Child-walking callback for SetHistoryEntry
static nsresult SetChildHistoryEntry(nsISHEntry *aEntry,
nsDocShell *aShell,
PRInt32 aEntryIndex, void *aData);
// Callback prototype for WalkHistoryEntries.
// aEntry is the child history entry, aShell is its corresponding docshell,
// aChildIndex is the child's index in its parent entry, and aData is
// the opaque pointer passed to WalkHistoryEntries.
typedef nsresult (*WalkHistoryEntriesFunc)(nsISHEntry *aEntry,
nsDocShell *aShell,
PRInt32 aChildIndex,
void *aData);
// For each child of aRootEntry, find the corresponding docshell which is
// a child of aRootShell, and call aCallback. The opaque pointer aData
// is passed to the callback.
static nsresult WalkHistoryEntries(nsISHEntry *aRootEntry,
nsDocShell *aRootShell,
WalkHistoryEntriesFunc aCallback,
void *aData);
// overridden from nsDocLoader, this provides more information than the
// normal OnStateChange with flags STATE_REDIRECTING
virtual void OnRedirectStateChange(nsIChannel* aOldChannel,
nsIChannel* aNewChannel,
PRUint32 aRedirectFlags,
PRUint32 aStateFlags);
/**
* Helper function that determines if channel is an HTTP POST.
*
* @param aChannel
* The channel to test
*
* @return True iff channel is an HTTP post.
*/
bool ChannelIsPost(nsIChannel* aChannel);
/**
* Helper function that finds the last URI and its transition flags for a
* channel.
*
* This method first checks the channel's property bag to see if previous
* info has been saved. If not, it gives back the referrer of the channel.
*
* @param aChannel
* The channel we are transitioning to
* @param aURI
* Output parameter with the previous URI, not addref'd
* @param aChannelRedirectFlags
* If a redirect, output parameter with the previous redirect flags
* from nsIChannelEventSink
*/
void ExtractLastVisit(nsIChannel* aChannel,
nsIURI** aURI,
PRUint32* aChannelRedirectFlags);
/**
* Helper function that caches a URI and a transition for saving later.
*
* @param aChannel
* Channel that will have these properties saved
* @param aURI
* The URI to save for later
* @param aChannelRedirectFlags
* The nsIChannelEventSink redirect flags to save for later
*/
void SaveLastVisit(nsIChannel* aChannel,
nsIURI* aURI,
PRUint32 aChannelRedirectFlags);
/**
* Helper function for adding a URI visit using IHistory. If IHistory is
* not available, the method tries nsIGlobalHistory2.
*
* The IHistory API maintains chains of visits, tracking both HTTP referrers
* and redirects for a user session. VisitURI requires the current URI and
* the previous URI in the chain.
*
* Visits can be saved either during a redirect or when the request has
* reached its final destination. The previous URI in the visit may be
* from another redirect or it may be the referrer.
*
* @pre aURI is not null.
*
* @param aURI
* The URI that was just visited
* @param aReferrerURI
* The referrer URI of this request
* @param aPreviousURI
* The previous URI of this visit (may be the same as aReferrerURI)
* @param aChannelRedirectFlags
* For redirects, the redirect flags from nsIChannelEventSink
* (0 otherwise)
*/
void AddURIVisit(nsIURI* aURI,
nsIURI* aReferrerURI,
nsIURI* aPreviousURI,
PRUint32 aChannelRedirectFlags);
// Helper Routines
nsresult ConfirmRepost(bool * aRepost);
NS_IMETHOD GetPromptAndStringBundle(nsIPrompt ** aPrompt,
nsIStringBundle ** aStringBundle);
NS_IMETHOD GetChildOffset(nsIDOMNode * aChild, nsIDOMNode * aParent,
PRInt32 * aOffset);
nsIScrollableFrame* GetRootScrollFrame();
NS_IMETHOD EnsureScriptEnvironment();
NS_IMETHOD EnsureEditorData();
nsresult EnsureTransferableHookData();
NS_IMETHOD EnsureFind();
nsresult RefreshURIFromQueue();
NS_IMETHOD DisplayLoadError(nsresult aError, nsIURI *aURI,
const PRUnichar *aURL,
nsIChannel* aFailedChannel = nsnull);
NS_IMETHOD LoadErrorPage(nsIURI *aURI, const PRUnichar *aURL,
const char *aErrorPage,
const PRUnichar *aErrorType,
const PRUnichar *aDescription,
const char *aCSSClass,
nsIChannel* aFailedChannel);
bool IsNavigationAllowed(bool aDisplayPrintErrorDialog = true);
bool IsPrintingOrPP(bool aDisplayErrorDialog = true);
nsresult SetBaseUrlForWyciwyg(nsIContentViewer * aContentViewer);
2001-09-08 02:06:08 +04:00
static inline PRUint32
PRTimeToSeconds(PRTime t_usec)
{
PRTime usec_per_sec;
PRUint32 t_sec;
LL_I2L(usec_per_sec, PR_USEC_PER_SEC);
LL_DIV(t_usec, t_usec, usec_per_sec);
LL_L2I(t_sec, t_usec);
return t_sec;
}
bool IsFrame();
//
// Helper method that is called when a new document (including any
// sub-documents - ie. frames) has been completely loaded.
//
virtual nsresult EndPageLoad(nsIWebProgress * aProgress,
nsIChannel * aChannel,
nsresult aResult);
// Sets the current document's current state object to the given SHEntry's
// state object. The current state object is eventually given to the page
// in the PopState event.
nsresult SetDocCurrentStateObj(nsISHEntry *shEntry);
nsresult CheckLoadingPermissions();
// Security checks to prevent frameset spoofing. See comments at
// implementation sites.
static bool CanAccessItem(nsIDocShellTreeItem* aTargetItem,
nsIDocShellTreeItem* aAccessingItem,
bool aConsiderOpener = true);
static bool ValidateOrigin(nsIDocShellTreeItem* aOriginTreeItem,
nsIDocShellTreeItem* aTargetTreeItem);
// Returns true if would have called FireOnLocationChange,
// but did not because aFireOnLocationChange was false on entry.
// In this case it is the caller's responsibility to ensure
// FireOnLocationChange is called.
// In all other cases false is returned.
bool SetCurrentURI(nsIURI *aURI, nsIRequest *aRequest,
bool aFireOnLocationChange,
PRUint32 aLocationFlags);
// The following methods deal with saving and restoring content viewers
// in session history.
// mContentViewer points to the current content viewer associated with
// this docshell. When loading a new document, the content viewer is
// either destroyed or stored into a session history entry. To make sure
// that destruction happens in a controlled fashion, a given content viewer
// is always owned in exactly one of these ways:
// 1) The content viewer is active and owned by a docshell's
// mContentViewer.
// 2) The content viewer is still being displayed while we begin loading
// a new document. The content viewer is owned by the _new_
// content viewer's mPreviousViewer, and has a pointer to the
// nsISHEntry where it will eventually be stored. The content viewer
// has been close()d by the docshell, which detaches the document from
// the window object.
// 3) The content viewer is cached in session history. The nsISHEntry
// has the only owning reference to the content viewer. The viewer
// has released its nsISHEntry pointer to prevent circular ownership.
//
// When restoring a content viewer from session history, open() is called
// to reattach the document to the window object. The content viewer is
// then placed into mContentViewer and removed from the history entry.
// (mContentViewer is put into session history as described above, if
// applicable).
// Determines whether we can safely cache the current mContentViewer in
// session history. This checks a number of factors such as cache policy,
// pending requests, and unload handlers.
// |aLoadType| should be the load type that will replace the current
// presentation. |aNewRequest| should be the request for the document to
// be loaded in place of the current document, or null if such a request
// has not been created yet. |aNewDocument| should be the document that will
// replace the current document.
bool CanSavePresentation(PRUint32 aLoadType,
nsIRequest *aNewRequest,
nsIDocument *aNewDocument);
// Captures the state of the supporting elements of the presentation
// (the "window" object, docshell tree, meta-refresh loads, and security
// state) and stores them on |mOSHE|.
nsresult CaptureState();
// Begin the toplevel restore process for |aSHEntry|.
// This simulates a channel open, and defers the real work until
// RestoreFromHistory is called from a PLEvent.
nsresult RestorePresentation(nsISHEntry *aSHEntry, bool *aRestoring);
// Call BeginRestore(nsnull, false) for each child of this shell.
nsresult BeginRestoreChildren();
// Method to get our current position and size without flushing
void DoGetPositionAndSize(PRInt32 * x, PRInt32 * y, PRInt32 * cx,
PRInt32 * cy);
// Call this when a URI load is handed to us (via OnLinkClick or
// InternalLoad). This makes sure that we're not inside unload, or that if
// we are it's still OK to load this URI.
bool IsOKToLoadURI(nsIURI* aURI);
void ReattachEditorToWindow(nsISHEntry *aSHEntry);
nsresult GetSessionStorageForURI(nsIURI* aURI,
const nsSubstring& aDocumentURI,
bool create,
nsIDOMStorage** aStorage);
// helpers for executing commands
nsresult GetControllerForCommand(const char *inCommand,
nsIController** outController);
nsresult IsCommandEnabled(const char * inCommand, bool* outEnabled);
nsresult DoCommand(const char * inCommand);
nsresult EnsureCommandHandler();
nsIChannel* GetCurrentDocChannel();
protected:
// Override the parent setter from nsDocLoader
virtual nsresult SetDocLoaderParent(nsDocLoader * aLoader);
void ClearFrameHistory(nsISHEntry* aEntry);
nsresult MaybeInitTiming();
// Event type dispatched by RestorePresentation
class RestorePresentationEvent : public nsRunnable {
public:
NS_DECL_NSIRUNNABLE
RestorePresentationEvent(nsDocShell *ds) : mDocShell(ds) {}
void Revoke() { mDocShell = nsnull; }
private:
nsRefPtr<nsDocShell> mDocShell;
};
// hash of session storages, keyed by domain
nsInterfaceHashtable<nsCStringHashKey, nsIDOMStorage> mStorages;
// Dimensions of the docshell
nsIntRect mBounds;
nsString mName;
nsString mTitle;
/**
* Content-Type Hint of the most-recently initiated load. Used for
* session history entries.
*/
nsCString mContentTypeHint;
nsIntPoint mDefaultScrollbarPref; // persistent across doc loads
nsCOMPtr<nsISupportsArray> mRefreshURIList;
nsCOMPtr<nsISupportsArray> mSavedRefreshURIList;
nsRefPtr<nsDSURIContentListener> mContentListener;
nsCOMPtr<nsIContentViewer> mContentViewer;
nsCOMPtr<nsIDocumentCharsetInfo> mDocumentCharsetInfo;
nsCOMPtr<nsIWidget> mParentWidget;
// mCurrentURI should be marked immutable on set if possible.
nsCOMPtr<nsIURI> mCurrentURI;
nsCOMPtr<nsIURI> mReferrerURI;
nsCOMPtr<nsIScriptGlobalObject> mScriptGlobal;
nsCOMPtr<nsISHistory> mSessionHistory;
nsCOMPtr<nsIGlobalHistory2> mGlobalHistory;
nsCOMPtr<nsIWebBrowserFind> mFind;
nsCOMPtr<nsICommandManager> mCommandManager;
// Reference to the SHEntry for this docshell until the page is destroyed.
// Somebody give me better name
nsCOMPtr<nsISHEntry> mOSHE;
// Reference to the SHEntry for this docshell until the page is loaded
// Somebody give me better name.
// If mLSHE is non-null, non-pushState subframe loads don't create separate
// root history entries. That is, frames loaded during the parent page
// load don't generate history entries the way frame navigation after the
// parent has loaded does. (This isn't the only purpose of mLSHE.)
nsCOMPtr<nsISHEntry> mLSHE;
// Holds a weak pointer to a RestorePresentationEvent object if any that
// holds a weak pointer back to us. We use this pointer to possibly revoke
// the event whenever necessary.
nsRevocableEventPtr<RestorePresentationEvent> mRestorePresentationEvent;
// Editor data, if this document is designMode or contentEditable.
nsAutoPtr<nsDocShellEditorData> mEditorData;
// Transferable hooks/callbacks
nsCOMPtr<nsIClipboardDragDropHookList> mTransferableHookData;
// Secure browser UI object
nsCOMPtr<nsISecureBrowserUI> mSecurityUI;
// The URI we're currently loading. This is only relevant during the
// firing of a pagehide/unload. The caller of FirePageHideNotification()
// is responsible for setting it and unsetting it. It may be null if the
// pagehide/unload is happening for some reason other than just loading a
// new URI.
nsCOMPtr<nsIURI> mLoadingURI;
2009-11-11 23:39:34 +03:00
// Set in LoadErrorPage from the method argument and used later
// in CreateContentViewer. We have to delay an shistory entry creation
// for which these objects are needed.
nsCOMPtr<nsIURI> mFailedURI;
nsCOMPtr<nsIChannel> mFailedChannel;
PRUint32 mFailedLoadType;
// WEAK REFERENCES BELOW HERE.
// Note these are intentionally not addrefd. Doing so will create a cycle.
// For that reasons don't use nsCOMPtr.
nsIDocShellTreeOwner * mTreeOwner; // Weak Reference
nsIDOMEventTarget * mChromeEventHandler; //Weak Reference
eCharsetReloadState mCharsetReloadState;
// Offset in the parent's child list.
// -1 if the docshell is added dynamically to the parent shell.
PRUint32 mChildOffset;
PRUint32 mBusyFlags;
PRUint32 mAppType;
PRUint32 mLoadType;
PRInt32 mMarginWidth;
PRInt32 mMarginHeight;
// This can either be a content docshell or a chrome docshell. After
// Create() is called, the type is not expected to change.
PRInt32 mItemType;
// Index into the SHTransaction list, indicating the previous and current
// transaction at the time that this DocShell begins to load
PRInt32 mPreviousTransIndex;
PRInt32 mLoadedTransIndex;
bool mCreated;
bool mAllowSubframes;
bool mAllowPlugins;
bool mAllowJavascript;
bool mAllowMetaRedirects;
bool mAllowImages;
bool mAllowDNSPrefetch;
bool mAllowWindowControl;
bool mCreatingDocument; // (should be) debugging only
bool mUseErrorPages;
bool mObserveErrorPages;
bool mAllowAuth;
bool mAllowKeywordFixup;
bool mIsOffScreenBrowser;
bool mIsActive;
bool mIsAppTab;
bool mUseGlobalHistory;
// This boolean is set to true right before we fire pagehide and generally
// unset when we embed a new content viewer. While it's true no navigation
// is allowed in this docshell.
bool mFiredUnloadEvent;
// this flag is for bug #21358. a docshell may load many urls
// which don't result in new documents being created (i.e. a new
// content viewer) we want to make sure we don't call a on load
// event more than once for a given content viewer.
bool mEODForCurrentDocument;
bool mURIResultedInDocument;
bool mIsBeingDestroyed;
bool mIsExecutingOnLoadHandler;
// Indicates that a DocShell in this "docshell tree" is printing
bool mIsPrintingOrPP;
// Indicates to CreateContentViewer() that it is safe to cache the old
// presentation of the page, and to SetupNewViewer() that the old viewer
// should be passed a SHEntry to save itself into.
bool mSavingOldViewer;
// @see nsIDocShellHistory::createdDynamically
bool mDynamicallyCreated;
#ifdef DEBUG
bool mInEnsureScriptEnv;
#endif
PRUint64 mHistoryID;
static nsIURIFixup *sURIFixup;
nsRefPtr<nsDOMNavigationTiming> mTiming;
#ifdef DEBUG
private:
// We're counting the number of |nsDocShells| to help find leaks
static unsigned long gNumberOfDocShells;
#endif /* DEBUG */
public:
class InterfaceRequestorProxy : public nsIInterfaceRequestor {
public:
InterfaceRequestorProxy(nsIInterfaceRequestor* p);
virtual ~InterfaceRequestorProxy();
NS_DECL_ISUPPORTS
NS_DECL_NSIINTERFACEREQUESTOR
protected:
InterfaceRequestorProxy() {}
nsWeakPtr mWeakPtr;
};
};
#endif /* nsDocShell_h__ */