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nsWebShell.cpp
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nsWebShell.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (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/NPL/
*
* 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 Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
#include "nsIWebShell.h"
#include "nsIDocumentLoader.h"
#include "nsIContentViewer.h"
#include "nsIDocumentViewer.h"
#include "nsIClipboardCommands.h"
#include "nsIDeviceContext.h"
#include "nsILinkHandler.h"
#include "nsIStreamListener.h"
#include "nsIPrompt.h"
#include "nsNeckoUtil.h"
#include "nsIProtocolHandler.h"
#include "nsIDNSService.h"
#include "nsIRefreshURI.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptContextOwner.h"
#include "nsIDocumentLoaderObserver.h"
#include "nsIProgressEventSink.h"
#include "nsDOMEvent.h"
#include "nsIPresContext.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsIEventQueueService.h"
#include "nsCRT.h"
#include "nsVoidArray.h"
#include "nsString.h"
#include "nsWidgetsCID.h"
#include "nsGfxCIID.h"
#include "plevent.h"
#include "prprf.h"
#include "nsIPluginHost.h"
#include "nsplugin.h"
#include "nsIFrame.h"
//#include "nsPluginsCID.h"
#include "nsIPluginManager.h"
#include "nsIPref.h"
#include "nsITimer.h"
#include "nsITimerCallback.h"
#include "nsIBrowserWindow.h"
#include "nsIContent.h"
#include "prlog.h"
#include "nsCOMPtr.h"
#include "nsIPresShell.h"
#include "nsIWebShellServices.h"
#include "nsIGlobalHistory.h"
#include "prmem.h"
#include "nsXPIDLString.h"
#include "nsIDOMHTMLElement.h"
#include "nsIDOMHTMLDocument.h"
#include "nsLayoutCID.h"
#include "nsIDOMRange.h"
#include "stopwatch.h"
#include "nsILocaleService.h"
static NS_DEFINE_CID(kLocaleServiceCID, NS_LOCALESERVICE_CID);
#ifdef XP_PC
#include <windows.h>
#endif
#include "nsIIOService.h"
#include "nsIURL.h"
//XXX for nsIPostData; this is wrong; we shouldn't see the nsIDocument type
#include "nsIDocument.h"
#ifdef DEBUG
#undef NOISY_LINKS
#undef NOISY_WEBSHELL_LEAKS
#else
#undef NOISY_LINKS
#undef NOISY_WEBSHELL_LEAKS
#endif
#ifdef NOISY_WEBSHELL_LEAKS
#undef DETECT_WEBSHELL_LEAKS
#define DETECT_WEBSHELL_LEAKS
#endif
#ifdef NS_DEBUG
/**
* Note: the log module is created during initialization which
* means that you cannot perform logging before then.
*/
static PRLogModuleInfo* gLogModule = PR_NewLogModule("webshell");
#endif
#define WEB_TRACE_CALLS 0x1
#define WEB_TRACE_HISTORY 0x2
#define WEB_LOG_TEST(_lm,_bit) (PRIntn((_lm)->level) & (_bit))
#ifdef NS_DEBUG
#define WEB_TRACE(_bit,_args) \
PR_BEGIN_MACRO \
if (WEB_LOG_TEST(gLogModule,_bit)) { \
PR_LogPrint _args; \
} \
PR_END_MACRO
#else
#define WEB_TRACE(_bit,_args)
#endif
#if OLD_EVENT_QUEUE
/* The following is not used for the GTK version of the browser.
* It is still lurking around for Motif
*/
PLEventQueue* gWebShell_UnixEventQueue;
void nsWebShell_SetUnixEventQueue(PLEventQueue* aEventQueue)
{
gWebShell_UnixEventQueue = aEventQueue;
}
#endif /* OLD_EVENT_QUEUE */
static NS_DEFINE_CID(kGlobalHistoryCID, NS_GLOBALHISTORY_CID);
static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
//----------------------------------------------------------------------
typedef enum {
eCharsetReloadInit,
eCharsetReloadRequested,
eCharsetReloadStopOrigional
} eCharsetReloadState;
class nsWebShell : public nsIWebShell,
public nsIWebShellContainer,
public nsIWebShellServices,
public nsILinkHandler,
public nsIScriptContextOwner,
public nsIDocumentLoaderObserver,
public nsIProgressEventSink, // should go away (nsIDocLoaderObs)
public nsIPrompt,
public nsIRefreshURI,
public nsIClipboardCommands
{
public:
nsWebShell();
virtual ~nsWebShell();
NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
// nsISupports
NS_DECL_ISUPPORTS
// nsIContentViewerContainer
NS_IMETHOD QueryCapability(const nsIID &aIID, void** aResult);
NS_IMETHOD Embed(nsIContentViewer* aDocViewer,
const char* aCommand,
nsISupports* aExtraInfo);
NS_IMETHOD GetContentViewer(nsIContentViewer** aResult);
// nsIWebShell
NS_IMETHOD Init(nsNativeWidget aNativeParent,
PRInt32 x, PRInt32 y, PRInt32 w, PRInt32 h,
nsScrollPreference aScrolling = nsScrollPreference_kAuto,
PRBool aAllowPlugins = PR_TRUE,
PRBool aIsSunkenBorder = PR_FALSE);
NS_IMETHOD Destroy(void);
NS_IMETHOD GetBounds(PRInt32 &x, PRInt32 &y, PRInt32 &w, PRInt32 &h);
NS_IMETHOD SetBounds(PRInt32 x, PRInt32 y, PRInt32 w, PRInt32 h);
NS_IMETHOD SizeToContent();
NS_IMETHOD MoveTo(PRInt32 aX, PRInt32 aY);
NS_IMETHOD Show();
NS_IMETHOD Hide();
NS_IMETHOD SetFocus();
NS_IMETHOD RemoveFocus();
NS_IMETHOD Repaint(PRBool aForce);
NS_IMETHOD SetContentViewer(nsIContentViewer* aViewer);
NS_IMETHOD SetContainer(nsIWebShellContainer* aContainer);
NS_IMETHOD GetContainer(nsIWebShellContainer*& aResult);
NS_IMETHOD SetDocLoaderObserver(nsIDocumentLoaderObserver* anObserver);
NS_IMETHOD GetDocLoaderObserver(nsIDocumentLoaderObserver*& aResult);
NS_IMETHOD SetPrefs(nsIPref* aPrefs);
NS_IMETHOD GetPrefs(nsIPref*& aPrefs);
NS_IMETHOD GetRootWebShell(nsIWebShell*& aResult);
NS_IMETHOD GetRootWebShellEvenIfChrome(nsIWebShell*& aResult);
NS_IMETHOD SetParent(nsIWebShell* aParent);
NS_IMETHOD GetParent(nsIWebShell*& aParent);
NS_IMETHOD GetParentEvenIfChrome(nsIWebShell*& aParent);
NS_IMETHOD GetReferrer(nsIURI **aReferrer);
NS_IMETHOD GetChildCount(PRInt32& aResult);
NS_IMETHOD AddChild(nsIWebShell* aChild);
NS_IMETHOD RemoveChild(nsIWebShell* aChild);
NS_IMETHOD ChildAt(PRInt32 aIndex, nsIWebShell*& aResult);
NS_IMETHOD GetName(const PRUnichar** aName);
NS_IMETHOD SetName(const PRUnichar* aName);
NS_IMETHOD FindChildWithName(const PRUnichar* aName,
nsIWebShell*& aResult);
NS_IMETHOD SetWebShellType(nsWebShellType aWebShellType);
NS_IMETHOD GetWebShellType(nsWebShellType& aWebShellType);
NS_IMETHOD GetContainingChromeElement(nsIContent** aResult);
NS_IMETHOD SetContainingChromeElement(nsIContent* aChromeElement);
NS_IMETHOD GetMarginWidth (PRInt32& aWidth);
NS_IMETHOD SetMarginWidth (PRInt32 aWidth);
NS_IMETHOD GetMarginHeight(PRInt32& aWidth);
NS_IMETHOD SetMarginHeight(PRInt32 aHeight);
NS_IMETHOD GetScrolling(PRInt32& aScrolling);
NS_IMETHOD SetScrolling(PRInt32 aScrolling, PRBool aSetCurrentAndInitial = PR_TRUE);
NS_IMETHOD GetIsFrame(PRBool& aIsFrame);
NS_IMETHOD SetIsFrame(PRBool aIsFrame);
NS_IMETHOD SetZoom(float aZoom);
NS_IMETHOD GetZoom(float *aZoom);
// Document load api's
NS_IMETHOD GetDocumentLoader(nsIDocumentLoader*& aResult);
NS_IMETHOD LoadURL(const PRUnichar *aURLSpec,
nsIInputStream* aPostDataStream=nsnull,
PRBool aModifyHistory=PR_TRUE,
nsLoadFlags aType = nsIChannel::LOAD_NORMAL,
const PRUint32 localIP = 0,
nsISupports * aHistoryState = nsnull,
const PRUnichar* aReferrer=nsnull);
NS_IMETHOD LoadURL(const PRUnichar *aURLSpec,
const char* aCommand,
nsIInputStream* aPostDataStream=nsnull,
PRBool aModifyHistory=PR_TRUE,
nsLoadFlags aType = nsIChannel::LOAD_NORMAL,
const PRUint32 localIP = 0,
nsISupports * aHistoryState=nsnull,
const PRUnichar* aReferrer=nsnull);
NS_IMETHOD LoadURI(nsIURI * aUri,
const char * aCommand,
nsIInputStream* aPostDataStream=nsnull,
PRBool aModifyHistory=PR_TRUE,
nsLoadFlags aType = nsIChannel::LOAD_NORMAL,
const PRUint32 aLocalIP=0,
nsISupports * aHistoryState=nsnull,
const PRUnichar* aReferrer=nsnull);
NS_IMETHOD Stop(void);
NS_IMETHOD Reload(nsLoadFlags aType);
// History api's
NS_IMETHOD Back(void);
NS_IMETHOD CanBack(void);
NS_IMETHOD Forward(void);
NS_IMETHOD CanForward(void);
NS_IMETHOD GoTo(PRInt32 aHistoryIndex);
NS_IMETHOD GetHistoryLength(PRInt32& aResult);
NS_IMETHOD GetHistoryIndex(PRInt32& aResult);
NS_IMETHOD GetURL(PRInt32 aHistoryIndex, const PRUnichar** aURLResult);
// Chrome api's
NS_IMETHOD SetTitle(const PRUnichar* aTitle);
NS_IMETHOD GetTitle(const PRUnichar** aResult);
// nsIWebShellContainer
NS_IMETHOD WillLoadURL(nsIWebShell* aShell, const PRUnichar* aURL, nsLoadType aReason);
NS_IMETHOD BeginLoadURL(nsIWebShell* aShell, const PRUnichar* aURL);
NS_IMETHOD ProgressLoadURL(nsIWebShell* aShell, const PRUnichar* aURL, PRInt32 aProgress, PRInt32 aProgressMax);
NS_IMETHOD EndLoadURL(nsIWebShell* aShell, const PRUnichar* aURL, nsresult aStatus);
NS_IMETHOD NewWebShell(PRUint32 aChromeMask,
PRBool aVisible,
nsIWebShell *&aNewWebShell);
NS_IMETHOD ContentShellAdded(nsIWebShell* aChildShell, nsIContent* frameNode);
NS_IMETHOD CreatePopup(nsIDOMElement* aElement, nsIDOMElement* aPopupContent,
PRInt32 aXPos, PRInt32 aYPos,
const nsString& aPopupType, const nsString& anAnchorAlignment,
const nsString& aPopupAlignment,
nsIDOMWindow* aWindow, nsIDOMWindow** outPopup);
NS_IMETHOD FindWebShellWithName(const PRUnichar* aName, nsIWebShell*& aResult);
NS_IMETHOD FocusAvailable(nsIWebShell* aFocusedWebShell, PRBool& aFocusTaken);
NS_IMETHOD GetHistoryState(nsISupports** aLayoutHistoryState);
NS_IMETHOD SetHistoryState(nsISupports* aLayoutHistoryState);
// nsIWebShellServices
NS_IMETHOD LoadDocument(const char* aURL,
const char* aCharset= nsnull ,
nsCharsetSource aSource = kCharsetUninitialized);
NS_IMETHOD ReloadDocument(const char* aCharset= nsnull ,
nsCharsetSource aSource = kCharsetUninitialized,
const char* aCmd=nsnull);
NS_IMETHOD StopDocumentLoad(void);
NS_IMETHOD SetRendering(PRBool aRender);
// nsILinkHandler
NS_IMETHOD OnLinkClick(nsIContent* aContent,
nsLinkVerb aVerb,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream = 0);
NS_IMETHOD OnOverLink(nsIContent* aContent,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec);
NS_IMETHOD GetLinkState(const PRUnichar* aURLSpec, nsLinkState& aState);
// nsIScriptContextOwner
NS_IMETHOD GetScriptContext(nsIScriptContext **aContext);
NS_IMETHOD GetScriptGlobalObject(nsIScriptGlobalObject **aGlobal);
NS_IMETHOD ReleaseScriptContext(nsIScriptContext *aContext);
NS_IMETHOD ReportScriptError(const char* aErrorString,
const char* aFileName,
PRInt32 aLineNo,
const char* aLineBuf);
// nsIDocumentLoaderObserver
NS_IMETHOD OnStartDocumentLoad(nsIDocumentLoader* loader,
nsIURI* aURL,
const char* aCommand);
NS_IMETHOD OnEndDocumentLoad(nsIDocumentLoader* loader,
nsIChannel* channel,
nsresult aStatus,
nsIDocumentLoaderObserver * );
NS_IMETHOD OnStartURLLoad(nsIDocumentLoader* loader,
nsIChannel* channel,
nsIContentViewer* aViewer);
NS_IMETHOD OnProgressURLLoad(nsIDocumentLoader* loader,
nsIChannel* channel, PRUint32 aProgress,
PRUint32 aProgressMax);
NS_IMETHOD OnStatusURLLoad(nsIDocumentLoader* loader,
nsIChannel* channel, nsString& aMsg);
NS_IMETHOD OnEndURLLoad(nsIDocumentLoader* loader,
nsIChannel* channel, nsresult aStatus);
NS_IMETHOD HandleUnknownContentType(nsIDocumentLoader* loader,
nsIChannel* channel,
const char *aContentType,
const char *aCommand );
NS_IMETHOD RefreshURL(const char* aURL, PRInt32 millis, PRBool repeat);
// nsIRefreshURL interface methods...
NS_IMETHOD RefreshURI(nsIURI* aURI, PRInt32 aMillis, PRBool aRepeat);
NS_IMETHOD CancelRefreshURITimers(void);
// nsIPrompt
NS_DECL_NSIPROMPT
// nsIProgressEventSink
NS_DECL_NSIPROGRESSEVENTSINK
// nsIClipboardCommands
NS_IMETHOD CanCutSelection (PRBool* aResult);
NS_IMETHOD CanCopySelection (PRBool* aResult);
NS_IMETHOD CanPasteSelection(PRBool* aResult);
NS_IMETHOD CutSelection (void);
NS_IMETHOD CopySelection (void);
NS_IMETHOD PasteSelection(void);
NS_IMETHOD SelectAll(void);
NS_IMETHOD SelectNone(void);
NS_IMETHOD FindNext(const PRUnichar * aSearchStr, PRBool aMatchCase, PRBool aSearchDown, PRBool &aIsFound);
// nsWebShell
nsIEventQueue* GetEventQueue(void);
void HandleLinkClickEvent(nsIContent *aContent,
nsLinkVerb aVerb,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream = 0);
void ShowHistory();
nsIWebShell* GetTarget(const PRUnichar* aName);
nsIBrowserWindow* GetBrowserWindow(void);
static void RefreshURLCallback(nsITimer* aTimer, void* aClosure);
static nsEventStatus PR_CALLBACK HandleEvent(nsGUIEvent *aEvent);
nsresult CreatePluginHost(PRBool aAllowPlugins);
nsresult DestroyPluginHost(void);
NS_IMETHOD IsBusy(PRBool& aResult);
NS_IMETHOD GetDefaultCharacterSet (const PRUnichar** aDefaultCharacterSet);
NS_IMETHOD SetDefaultCharacterSet (const PRUnichar* aDefaultCharacterSet);
NS_IMETHOD GetForceCharacterSet (const PRUnichar** aForceCharacterSet);
NS_IMETHOD SetForceCharacterSet (const PRUnichar* aForceCharacterSet);
NS_IMETHOD GetCharacterSetHint (const PRUnichar** oHintCharset, nsCharsetSource* oSource);
NS_IMETHOD SetSessionHistory(nsISessionHistory * aSHist);
NS_IMETHOD GetSessionHistory(nsISessionHistory *& aResult);
NS_IMETHOD SetIsInSHist(PRBool aIsFrame);
NS_IMETHOD GetIsInSHist(PRBool& aIsFrame);
NS_IMETHOD GetURL(const PRUnichar** aURL);
NS_IMETHOD SetURL(const PRUnichar* aURL);
NS_IMETHOD SetUrlDispatcher(nsIUrlDispatcher * anObserver);
NS_IMETHOD GetUrlDispatcher(nsIUrlDispatcher *& aResult);
protected:
void InitFrameData(PRBool aCompleteInitScrolling);
nsresult CheckForTrailingSlash(nsIURI* aURL);
nsresult StopBeforeRequestingURL(void);
nsresult StopAfterURLAvailable(void);
nsresult GetViewManager(nsIViewManager* *viewManager);
nsIEventQueue* mThreadEventQueue;
nsIScriptGlobalObject *mScriptGlobal;
nsIScriptContext* mScriptContext;
nsIWebShellContainer* mContainer;
nsIContentViewer* mContentViewer;
nsIDeviceContext* mDeviceContext;
nsIPref* mPrefs;
nsIWidget* mWindow;
nsIDocumentLoader* mDocLoader;
nsIDocumentLoaderObserver* mDocLoaderObserver;
nsIUrlDispatcher * mUrlDispatcher;
nsIWebShell* mParent;
nsVoidArray mChildren;
nsString mName;
nsString mDefaultCharacterSet;
nsVoidArray mHistory;
PRInt32 mHistoryIndex;
nsIGlobalHistory* mHistoryService;
nsISessionHistory * mSHist;
nsString mTitle;
nsString mURL;
nsString mReferrer;
nsString mOverURL;
nsString mOverTarget;
PRPackedBool mIsInSHist;
PRPackedBool mIsFrame;
PRPackedBool mFailedToLoadHistoryService;
nsScrollPreference mScrollPref;
PRInt32 mMarginWidth;
PRInt32 mMarginHeight;
PRInt32 mScrolling[2];
nsVoidArray mRefreshments;
eCharsetReloadState mCharsetReloadState;
nsWebShellType mWebShellType;
nsIContent* mChromeElement; // Weak reference.
nsISupports* mHistoryState; // Weak reference. Session history owns this.
void ReleaseChildren();
void DestroyChildren();
nsresult CreateScriptEnvironment();
nsresult DoLoadURL(nsIURI * aUri,
const char* aCommand,
nsIInputStream* aPostDataStream,
nsLoadFlags aType,
const PRUint32 aLocalIP,
const PRUnichar* aReferrer);
float mZoom;
static nsIPluginHost *mPluginHost;
static nsIPluginManager *mPluginManager;
static PRUint32 mPluginInitCnt;
PRBool mProcessedEndDocumentLoad;
// XXX store mHintCharset and mHintCharsetSource here untill we find out a good cood path
nsString mHintCharset;
nsCharsetSource mHintCharsetSource;
PRBool mViewSource;
nsString mForceCharacterSet;
// if there is no mWindow, this will keep track of the bounds --dwc0001
nsRect mBounds;
#ifdef MOZ_PERF_METRICS
Stopwatch mTotalTime;
#endif
#ifdef DETECT_WEBSHELL_LEAKS
private:
// We're counting the number of |nsWebShells| to help find leaks
static unsigned long gNumberOfWebShells;
public:
static unsigned long TotalWebShellsInExistence() { return gNumberOfWebShells; }
#endif
};
#ifdef DETECT_WEBSHELL_LEAKS
unsigned long nsWebShell::gNumberOfWebShells = 0;
extern "C" NS_WEB
unsigned long
NS_TotalWebShellsInExistence()
{
return nsWebShell::TotalWebShellsInExistence();
}
#endif
//----------------------------------------------------------------------
// Class IID's
static NS_DEFINE_IID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
static NS_DEFINE_IID(kChildCID, NS_CHILD_CID);
static NS_DEFINE_IID(kDeviceContextCID, NS_DEVICE_CONTEXT_CID);
static NS_DEFINE_IID(kDocLoaderServiceCID, NS_DOCUMENTLOADER_SERVICE_CID);
static NS_DEFINE_IID(kWebShellCID, NS_WEB_SHELL_CID);
// IID's
static NS_DEFINE_IID(kIContentViewerContainerIID,
NS_ICONTENT_VIEWER_CONTAINER_IID);
static NS_DEFINE_IID(kIDocumentLoaderObserverIID,
NS_IDOCUMENT_LOADER_OBSERVER_IID);
static NS_DEFINE_IID(kIProgressEventSinkIID, NS_IPROGRESSEVENTSINK_IID);
static NS_DEFINE_IID(kIDeviceContextIID, NS_IDEVICE_CONTEXT_IID);
static NS_DEFINE_IID(kIDocumentLoaderIID, NS_IDOCUMENTLOADER_IID);
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
static NS_DEFINE_IID(kIScriptContextOwnerIID, NS_ISCRIPTCONTEXTOWNER_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kRefreshURIIID, NS_IREFRESHURI_IID);
static NS_DEFINE_IID(kIWebShellIID, NS_IWEB_SHELL_IID);
static NS_DEFINE_IID(kIWebShellServicesIID, NS_IWEB_SHELL_SERVICES_IID);
static NS_DEFINE_IID(kIWidgetIID, NS_IWIDGET_IID);
static NS_DEFINE_IID(kIPluginManagerIID, NS_IPLUGINMANAGER_IID);
static NS_DEFINE_IID(kIPluginHostIID, NS_IPLUGINHOST_IID);
static NS_DEFINE_IID(kCPluginManagerCID, NS_PLUGINMANAGER_CID);
static NS_DEFINE_IID(kIDocumentViewerIID, NS_IDOCUMENT_VIEWER_IID);
static NS_DEFINE_IID(kITimerCallbackIID, NS_ITIMERCALLBACK_IID);
static NS_DEFINE_IID(kIWebShellContainerIID, NS_IWEB_SHELL_CONTAINER_IID);
static NS_DEFINE_IID(kIBrowserWindowIID, NS_IBROWSER_WINDOW_IID);
static NS_DEFINE_IID(kIClipboardCommandsIID, NS_ICLIPBOARDCOMMANDS_IID);
static NS_DEFINE_IID(kIEventQueueServiceIID, NS_IEVENTQUEUESERVICE_IID);
static NS_DEFINE_IID(kISessionHistoryIID, NS_ISESSIONHISTORY_IID);
static NS_DEFINE_IID(kIDOMHTMLDocumentIID, NS_IDOMHTMLDOCUMENT_IID);
static NS_DEFINE_CID(kCDOMRangeCID, NS_RANGE_CID);
// XXX not sure
static NS_DEFINE_IID(kILinkHandlerIID, NS_ILINKHANDLER_IID);
nsIPluginHost *nsWebShell::mPluginHost = nsnull;
nsIPluginManager *nsWebShell::mPluginManager = nsnull;
PRUint32 nsWebShell::mPluginInitCnt = 0;
nsresult nsWebShell::CreatePluginHost(PRBool aAllowPlugins)
{
nsresult rv = NS_OK;
if ((PR_TRUE == aAllowPlugins) && (0 == mPluginInitCnt))
{
if (nsnull == mPluginManager)
{
// use the service manager to obtain the plugin manager.
rv = nsServiceManager::GetService(kCPluginManagerCID, kIPluginManagerIID,
(nsISupports**)&mPluginManager);
if (NS_OK == rv)
{
if (NS_OK == mPluginManager->QueryInterface(kIPluginHostIID,
(void **)&mPluginHost))
{
mPluginHost->Init();
}
}
}
}
mPluginInitCnt++;
return rv;
}
nsresult nsWebShell::DestroyPluginHost(void)
{
mPluginInitCnt--;
NS_ASSERTION(!(mPluginInitCnt < 0), "underflow in plugin host destruction");
if (0 == mPluginInitCnt)
{
if (nsnull != mPluginHost) {
mPluginHost->Destroy();
mPluginHost->Release();
mPluginHost = NULL;
}
// use the service manager to release the plugin manager.
if (nsnull != mPluginManager) {
nsServiceManager::ReleaseService(kCPluginManagerCID, mPluginManager);
mPluginManager = NULL;
}
}
return NS_OK;
}
//----------------------------------------------------------------------
// Note: operator new zeros our memory
nsWebShell::nsWebShell()
{
#ifdef DETECT_WEBSHELL_LEAKS
// We're counting the number of |nsWebShells| to help find leaks
++gNumberOfWebShells;
#endif
#ifdef NOISY_WEBSHELL_LEAKS
printf("WEBSHELL+ = %d\n", gNumberOfWebShells);
#endif
NS_INIT_REFCNT();
mHistoryIndex = -1;
mScrollPref = nsScrollPreference_kAuto;
mScriptGlobal = nsnull;
mScriptContext = nsnull;
mThreadEventQueue = nsnull;
InitFrameData(PR_TRUE);
mIsFrame = PR_FALSE;
mWebShellType = nsWebShellContent;
mChromeElement = nsnull;
mSHist = nsnull;
mIsInSHist = PR_FALSE;
mFailedToLoadHistoryService = PR_FALSE;
mDefaultCharacterSet = "";
mProcessedEndDocumentLoad = PR_FALSE;
mHintCharset = "";
mHintCharsetSource = kCharsetUninitialized;
mCharsetReloadState = eCharsetReloadInit;
mViewSource=PR_FALSE;
mForceCharacterSet = "";
mHistoryService = nsnull;
mHistoryState = nsnull;
}
nsWebShell::~nsWebShell()
{
if (nsnull != mHistoryService) {
nsServiceManager::ReleaseService(kGlobalHistoryCID, mHistoryService);
mHistoryService = nsnull;
}
// Stop any pending document loads and destroy the loader...
if (nsnull != mDocLoader) {
mDocLoader->Stop();
mDocLoader->RemoveObserver((nsIDocumentLoaderObserver*)this);
mDocLoader->SetContainer(nsnull);
NS_RELEASE(mDocLoader);
}
// Cancel any timers that were set for this loader.
CancelRefreshURITimers();
++mRefCnt; // following releases can cause this destructor to be called
// recursively if the refcount is allowed to remain 0
NS_IF_RELEASE(mSHist);
NS_IF_RELEASE(mWindow);
NS_IF_RELEASE(mThreadEventQueue);
NS_IF_RELEASE(mContentViewer);
NS_IF_RELEASE(mDeviceContext);
NS_IF_RELEASE(mPrefs);
NS_IF_RELEASE(mContainer);
if (nsnull != mScriptGlobal) {
mScriptGlobal->SetWebShell(nsnull);
NS_RELEASE(mScriptGlobal);
}
if (nsnull != mScriptContext) {
mScriptContext->SetOwner(nsnull);
NS_RELEASE(mScriptContext);
}
InitFrameData(PR_TRUE);
mIsFrame = PR_FALSE;
// XXX Because we hold references to the children and they hold references
// to us we never get destroyed. See Destroy() instead...
#if 0
// Release references on our children
ReleaseChildren();
#endif
// Free up history memory
PRInt32 i, n = mHistory.Count();
for (i = 0; i < n; i++) {
nsString* s = (nsString*) mHistory.ElementAt(i);
delete s;
}
DestroyPluginHost();
#ifdef DETECT_WEBSHELL_LEAKS
// We're counting the number of |nsWebShells| to help find leaks
--gNumberOfWebShells;
#endif
#ifdef NOISY_WEBSHELL_LEAKS
printf("WEBSHELL- = %d\n", gNumberOfWebShells);
#endif
}
void nsWebShell::InitFrameData(PRBool aCompleteInitScrolling)
{
if (aCompleteInitScrolling) {
mScrolling[0] = -1;
mScrolling[1] = -1;
mMarginWidth = -1;
mMarginHeight = -1;
}
else {
mScrolling[1] = mScrolling[0];
}
}
void
nsWebShell::ReleaseChildren()
{
PRInt32 i, n = mChildren.Count();
for (i = 0; i < n; i++) {
nsIWebShell* shell = (nsIWebShell*) mChildren.ElementAt(i);
shell->SetParent(nsnull);
//Break circular reference of webshell to contentviewer
shell->SetContentViewer(nsnull);
NS_RELEASE(shell);
}
mChildren.Clear();
}
void
nsWebShell::DestroyChildren()
{
PRInt32 i, n = mChildren.Count();
for (i = 0; i < n; i++) {
nsIWebShell* shell = (nsIWebShell*) mChildren.ElementAt(i);
shell->SetParent(nsnull);
shell->Destroy();
NS_RELEASE(shell);
}
mChildren.Clear();
}
NS_IMPL_ADDREF(nsWebShell)
NS_IMPL_RELEASE(nsWebShell)
nsresult
nsWebShell::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
nsresult rv = NS_NOINTERFACE;
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kIWebShellServicesIID)) {
*aInstancePtr = (void*)(nsIWebShellServices*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIWebShellIID)) {
*aInstancePtr = (void*)(nsIWebShell*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIContentViewerContainerIID)) {
*aInstancePtr = (void*)(nsIContentViewerContainer*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIScriptContextOwnerIID)) {
*aInstancePtr = (void*)(nsIScriptContextOwner*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIDocumentLoaderObserverIID)) {
*aInstancePtr = (void*)(nsIDocumentLoaderObserver*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIProgressEventSinkIID)) {
*aInstancePtr = (void*)(nsIProgressEventSink*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIWebShellContainerIID)) {
*aInstancePtr = (void*)(nsIWebShellContainer*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kILinkHandlerIID)) {
//I added this for plugin support of jumping
//through links. maybe there is a better way... MMP
*aInstancePtr = (void*)(nsILinkHandler*)this;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(nsIPrompt::GetIID())) {
*aInstancePtr = (void*) ((nsIPrompt*)this);
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kRefreshURIIID)) {
*aInstancePtr = (void*) ((nsIRefreshURI*)this);
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIClipboardCommandsIID)) {
*aInstancePtr = (void*) ((nsIClipboardCommands*)this);
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kISupportsIID)) {
*aInstancePtr = (void*)(nsISupports*)(nsIWebShell*)this;
NS_ADDREF_THIS();
return NS_OK;
}
#if defined(NS_DEBUG)
/*
* Check for the debug-only interface indicating thread-safety
*/
static NS_DEFINE_IID(kIsThreadsafeIID, NS_ISTHREADSAFE_IID);
if (aIID.Equals(kIsThreadsafeIID)) {
return NS_OK;
}
#endif /* NS_DEBUG */
return rv;
}
NS_IMETHODIMP
nsWebShell::QueryCapability(const nsIID &aIID, void** aInstancePtr)
{
if (nsnull == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kILinkHandlerIID)) {
*aInstancePtr = (void*) ((nsILinkHandler*)this);
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIScriptContextOwnerIID)) {
*aInstancePtr = (void*) ((nsIScriptContextOwner*)this);
NS_ADDREF_THIS();
return NS_OK;
}
//XXX this seems a little wrong. MMP
if (nsnull != mPluginManager)
return mPluginManager->QueryInterface(aIID, aInstancePtr);
return NS_NOINTERFACE;
}
NS_IMETHODIMP
nsWebShell::Embed(nsIContentViewer* aContentViewer,
const char* aCommand,
nsISupports* aExtraInfo)
{
nsresult rv;
nsRect bounds;
WEB_TRACE(WEB_TRACE_CALLS,
("nsWebShell::Embed: this=%p aDocViewer=%p aCommand=%s aExtraInfo=%p",
this, aContentViewer, aCommand ? aCommand : "", aExtraInfo));
NS_IF_RELEASE(mContentViewer);
if (nsnull != mScriptContext) {
mScriptContext->GC();
}
mContentViewer = aContentViewer;
NS_ADDREF(aContentViewer);
// check to see if we have a window to embed into --dwc0001
/* Note we also need to check for the presence of a native widget. If the
webshell is hidden before it's embedded, which can happen in an onload
handler, the native widget is destroyed before this code is run. This
appears to be mostly harmless except on Windows, where the subsequent
attempt to create a child window without a parent is met with disdain
by the OS. It's handy, then, that GetNativeData on Windows returns
null in this case. */
if(mWindow && mWindow->GetNativeData(NS_NATIVE_WIDGET)) {
mWindow->GetClientBounds(bounds);
bounds.x = bounds.y = 0;
rv = mContentViewer->Init(mWindow->GetNativeData(NS_NATIVE_WIDGET),
mDeviceContext,
mPrefs,
bounds,
mScrollPref);
// If the history state has been set by session history,
// set it on the pres shell now that we have a content
// viewer.
if (mContentViewer && mHistoryState) {
nsCOMPtr<nsIDocumentViewer> docv = do_QueryInterface(mContentViewer);
if (nsnull != docv) {
nsCOMPtr<nsIPresShell> shell;
rv = docv->GetPresShell(*getter_AddRefs(shell));
if (NS_SUCCEEDED(rv)) {
rv = shell->SetHistoryState((nsILayoutHistoryState*) mHistoryState);
}
}
}
if (NS_SUCCEEDED(rv)) {
mContentViewer->Show();
}
} else {
mContentViewer = nsnull;
}
// Now that we have switched documents, forget all of our children
DestroyChildren();
return rv;
}
NS_IMETHODIMP
nsWebShell::GetContentViewer(nsIContentViewer** aResult)
{
nsresult rv = NS_OK;
if (nsnull == aResult) {
rv = NS_ERROR_NULL_POINTER;
} else {
*aResult = mContentViewer;
NS_IF_ADDREF(mContentViewer);
}
return rv;
}
NS_IMETHODIMP
nsWebShell::HandleUnknownContentType(nsIDocumentLoader* loader,
nsIChannel* channel,
const char *aContentType,
const char *aCommand ) {
// If we have a doc loader observer, let it respond to this.
return mDocLoaderObserver ? mDocLoaderObserver->HandleUnknownContentType( mDocLoader, channel, aContentType, aCommand )
: NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsWebShell::Init(nsNativeWidget aNativeParent,
PRInt32 x, PRInt32 y, PRInt32 w, PRInt32 h,
nsScrollPreference aScrolling,
PRBool aAllowPlugins,
PRBool aIsSunkenBorder)
{
nsresult rv = NS_OK;
// Cache the PL_EventQueue of the current UI thread...
//
// Since this call must be made on the UI thread, we know the Event Queue
// will be associated with the current thread...
//
NS_WITH_SERVICE(nsIEventQueueService, eventService, kEventQueueServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = eventService->GetThreadEventQueue(PR_GetCurrentThread(), &mThreadEventQueue);
if (NS_FAILED(rv)) return rv;
//XXX make sure plugins have started up. this really needs to
//be associated with the nsIContentViewerContainer interfaces,
//not the nsIWebShell interfaces. this is a hack. MMP
nsRect aBounds(x,y,w,h);
mBounds.SetRect(x,y,w,h); // initialize the webshells bounds --dwc0001
nsWidgetInitData widgetInit;
CreatePluginHost(aAllowPlugins);
//mScrollPref = aScrolling;
WEB_TRACE(WEB_TRACE_CALLS,
("nsWebShell::Init: this=%p", this));
/* it is ok to have a webshell without an aNativeParent (used later to create the mWindow --dwc0001
// Initial error checking...
NS_PRECONDITION(nsnull != aNativeParent, "null Parent Window");
if (nsnull == aNativeParent) {
rv = NS_ERROR_NULL_POINTER;
goto done;
}
*/
// Create a document loader...
if (nsnull != mParent) {