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fune/docshell/base/nsWebShell.cpp
valeski%netscape.com 0a20396f56 webshell/public/nsIDocumentLoader.h 
Removed support for the underlying timer/refreshurl infrastructure.

webshell/src/nsDocLoader.cpp
1. Added support in nsDocumentBindInfo for the new nsIRefreshUrl method for cancelling.
1.5 Changed the refreshurl() method so it delegates to the container's (i.e. webshell's) refreshurl() method.
2. Removed the "actual" refresh url implementation (timers) from the nsDocumentBindInfo. It's now in the webshell and nsDocumentBindInfo's implementation of nsIRefreshUrl simply delegates to the "container" (i.e. the webshell).
3. Added call to new NS_NewURL() routine which takes an nsISupports pointer as an arg, if the nsDocumentBindInfo has a container to pass along.

webshell/src/nsWebShell.cpp
Added support for the nsIRefreshUrl interface to nsWebShell (this includes the underlying timers and callback mechanism).
1998-08-18 23:25:17 +00:00

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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 "nsIDeviceContext.h"
#include "nsILinkHandler.h"
#include "nsIStreamListener.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptContextOwner.h"
#include "nsIDocumentLoaderObserver.h"
#include "nsDOMEvent.h"
#include "nsIPresContext.h"
#include "nsRepository.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 "nsPluginsCID.h"
#include "nsIPref.h"
#include "nsIBrowserWindow.h"
#include "nsIRefreshUrl.h"
#include "nsITimer.h"
#include "prlog.h"
//XXX for nsIPostData; this is wrong; we shouldn't see the nsIDocument type
#include "nsIDocument.h"
#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("webwidget");
#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 XP_UNIX
// XXX. This should be changed.
// Allow the event queue to be setup from outside
// the webshell.
PLEventQueue* gWebShell_UnixEventQueue;
void nsWebShell_SetUnixEventQueue(PLEventQueue* aEventQueue)
{
gWebShell_UnixEventQueue = aEventQueue;
}
#endif
//----------------------------------------------------------------------
class nsWebShell : public nsIWebShell,
public nsIWebShellContainer,
public nsILinkHandler,
public nsIScriptContextOwner,
public nsIDocumentLoaderObserver,
public nsIRefreshUrl
{
public:
nsWebShell();
virtual ~nsWebShell();
void* operator new(size_t sz) {
void* rv = new char[sz];
nsCRT::zero(rv, sz);
return rv;
}
// nsISupports
NS_DECL_ISUPPORTS
// nsIContentViewerContainer
NS_IMETHOD QueryCapability(const nsIID &aIID, void** aResult);
NS_IMETHOD Embed(nsIContentViewer* aDocViewer,
const char* aCommand,
nsISupports* aExtraInfo);
// nsIWebShell
NS_IMETHOD Init(nsNativeWidget aNativeParent,
PRInt32 x, PRInt32 y, PRInt32 w, PRInt32 h,
nsScrollPreference aScrolling = nsScrollPreference_kAuto,
PRBool aAllowPlugins = PR_TRUE);
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 MoveTo(PRInt32 aX, PRInt32 aY);
NS_IMETHOD Show();
NS_IMETHOD Hide();
NS_IMETHOD Repaint(PRBool aForce);
NS_IMETHOD SetContentViewer(nsIContentViewer* aViewer);
NS_IMETHOD GetContentViewer(nsIContentViewer*& aResult);
NS_IMETHOD SetContainer(nsIWebShellContainer* aContainer);
NS_IMETHOD GetContainer(nsIWebShellContainer*& aResult);
NS_IMETHOD SetObserver(nsIStreamObserver* anObserver);
NS_IMETHOD GetObserver(nsIStreamObserver*& aResult);
NS_IMETHOD SetPrefs(nsIPref* aPrefs);
NS_IMETHOD GetPrefs(nsIPref*& aPrefs);
NS_IMETHOD GetRootWebShell(nsIWebShell*& aResult);
NS_IMETHOD SetParent(nsIWebShell* aParent);
NS_IMETHOD GetParent(nsIWebShell*& aParent);
NS_IMETHOD GetChildCount(PRInt32& aResult);
NS_IMETHOD AddChild(nsIWebShell* aChild);
NS_IMETHOD ChildAt(PRInt32 aIndex, nsIWebShell*& aResult);
NS_IMETHOD GetName(PRUnichar** aName);
NS_IMETHOD SetName(const PRUnichar* aName);
NS_IMETHOD FindChildWithName(const PRUnichar* aName,
nsIWebShell*& aResult);
NS_IMETHOD GetMarginWidth (PRInt32& aWidth);
NS_IMETHOD SetMarginWidth (PRInt32 aWidth);
NS_IMETHOD GetMarginHeight(PRInt32& aWidth);
NS_IMETHOD SetMarginHeight(PRInt32 aHeight);
// Document load api's
NS_IMETHOD GetDocumentLoader(nsIDocumentLoader*& aResult);
NS_IMETHOD LoadURL(const PRUnichar *aURLSpec,
nsIPostData* aPostData=nsnull,
PRBool aModifyHistory=PR_TRUE);
NS_IMETHOD Stop(void);
NS_IMETHOD Reload(nsReloadType 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 GetHistoryIndex(PRInt32& aResult);
NS_IMETHOD GetURL(PRInt32 aHistoryIndex, PRUnichar** aURLResult);
// Chrome api's
NS_IMETHOD SetTitle(const PRUnichar* aTitle);
NS_IMETHOD GetTitle(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, PRInt32 aStatus);
NS_IMETHOD OverLink(nsIWebShell* aShell, const PRUnichar* aURLSpec, const PRUnichar* aTargetSpec);
// nsILinkHandler
NS_IMETHOD OnLinkClick(nsIFrame* aFrame,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIPostData* aPostData = 0);
NS_IMETHOD OnOverLink(nsIFrame* aFrame,
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);
// nsIDocumentLoaderObserver
NS_IMETHOD OnConnectionsComplete();
// nsIRefreshURL interface methods...
NS_IMETHOD RefreshURL(nsIURL* aURL, PRInt32 millis, PRBool repeat);
NS_IMETHOD CancelRefreshURLTimers(void);
// nsWebShell
void HandleLinkClickEvent(const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIPostData* aPostDat = 0);
void ShowHistory();
nsIWebShell* GetTarget(const PRUnichar* aName);
static void RefreshURLCallback(nsITimer* aTimer, void* aClosure);
static nsEventStatus PR_CALLBACK HandleEvent(nsGUIEvent *aEvent);
static nsresult CreatePluginHost(void);
protected:
nsIScriptGlobalObject *mScriptGlobal;
nsIScriptContext* mScriptContext;
nsIWebShellContainer* mContainer;
nsIContentViewer* mContentViewer;
nsIDeviceContext* mDeviceContext;
nsIPref* mPrefs;
nsIWidget* mWindow;
nsISupports* mInnerWindow;
nsIDocumentLoader* mDocLoader;
nsIStreamObserver* mObserver;
nsIWebShell* mParent;
nsVoidArray mChildren;
nsString mName;
nsVoidArray mHistory;
PRInt32 mHistoryIndex;
nsString mTitle;
nsString mOverURL;
nsString mOverTarget;
nsScrollPreference mScrollPref;
PRInt32 mMarginWidth;
PRInt32 mMarginHeight;
nsVoidArray mRefreshments;
void ReleaseChildren();
static nsIPluginHost *mPluginHost;
static nsIPluginManager *mPluginManager;
static PRBool mPluginInited;
};
//----------------------------------------------------------------------
// Class IID's
static NS_DEFINE_IID(kChildCID, NS_CHILD_CID);
static NS_DEFINE_IID(kDeviceContextCID, NS_DEVICE_CONTEXT_CID);
static NS_DEFINE_IID(kDocumentLoaderCID, NS_DOCUMENTLOADER_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(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(kIStreamObserverIID, NS_ISTREAMOBSERVER_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIWebShellIID, NS_IWEB_SHELL_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(kCPluginHostCID, NS_PLUGIN_HOST_CID);
static NS_DEFINE_IID(kIBrowserWindowIID, NS_IBROWSER_WINDOW_IID);
static NS_DEFINE_IID(kIDocumentLoaderObserverIID, NS_IDOCUMENT_LOADER_OBSERVER_IID);
static NS_DEFINE_IID(kIDocumentViewerIID, NS_IDOCUMENT_VIEWER_IID);
static NS_DEFINE_IID(kRefreshURLIID, NS_IREFRESHURL_IID);
// XXX not sure
static NS_DEFINE_IID(kILinkHandlerIID, NS_ILINKHANDLER_IID);
nsIPluginHost *nsWebShell::mPluginHost = nsnull;
nsIPluginManager *nsWebShell::mPluginManager = nsnull;
PRBool nsWebShell::mPluginInited = PR_FALSE;
nsresult nsWebShell::CreatePluginHost(void)
{
nsresult rv = NS_ERROR_FAILURE;
if (nsnull == mPluginManager)
{
rv = NSRepository::CreateInstance(kCPluginHostCID, nsnull,
kIPluginManagerIID,
(void**)&mPluginManager);
if (NS_OK == rv)
{
if (NS_OK == mPluginManager->QueryInterface(kIPluginHostIID,
(void **)&mPluginHost))
{
mPluginHost->Init();
mPluginHost->LoadPlugins();
}
}
}
return rv;
}
//----------------------------------------------------------------------
// Note: operator new zeros our memory
nsWebShell::nsWebShell()
{
NS_INIT_REFCNT();
mHistoryIndex = -1;
mScrollPref = nsScrollPreference_kAuto;
mScriptGlobal = nsnull;
mScriptContext = nsnull;
mMarginWidth = -1;
mMarginHeight = -1;
}
nsWebShell::~nsWebShell()
{
// Stop any pending document loads and destroy the loader...
if (nsnull != mDocLoader) {
mDocLoader->Stop();
mDocLoader->RemoveObserver((nsIDocumentLoaderObserver*)this);
NS_RELEASE(mDocLoader);
}
// Cancel any timers that were set for this loader.
CancelRefreshURLTimers();
NS_IF_RELEASE(mInnerWindow);
NS_IF_RELEASE(mContentViewer);
NS_IF_RELEASE(mDeviceContext);
NS_IF_RELEASE(mPrefs);
NS_IF_RELEASE(mContainer);
NS_IF_RELEASE(mObserver);
if (nsnull != mScriptGlobal) {
mScriptGlobal->SetWebShell(nsnull);
NS_RELEASE(mScriptGlobal);
}
NS_IF_RELEASE(mScriptContext);
// Release references on our children
ReleaseChildren();
// Free up history memory
PRInt32 i, n = mHistory.Count();
for (i = 0; i < n; i++) {
nsString* s = (nsString*) mHistory.ElementAt(i);
delete s;
}
}
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();
}
NS_IMPL_ADDREF(nsWebShell)
NS_IMPL_RELEASE(nsWebShell)
//XXX missing nsIWebShellContainer!!!
nsresult
nsWebShell::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kIWebShellIID)) {
*aInstancePtr = (void*)(nsIWebShell*)this;
AddRef();
return NS_OK;
}
if (aIID.Equals(kIContentViewerContainerIID)) {
*aInstancePtr = (void*)(nsIContentViewerContainer*)this;
AddRef();
return NS_OK;
}
if (aIID.Equals(kIScriptContextOwnerIID)) {
*aInstancePtr = (void*)(nsIScriptContextOwner*)this;
AddRef();
return NS_OK;
}
if (aIID.Equals(kIDocumentLoaderObserverIID)) {
*aInstancePtr = (void*)(nsIDocumentLoaderObserver*)this;
AddRef();
return NS_OK;
}
if (aIID.Equals(kISupportsIID)) {
*aInstancePtr = (void*)(nsISupports*)(nsIWebShell*)this;
AddRef();
return NS_OK;
}
if (aIID.Equals(kRefreshURLIID)) {
*aInstancePtr = (void*)(nsIRefreshUrl*)this;
AddRef();
return NS_OK;
}
if (nsnull != mInnerWindow) {
return mInnerWindow->QueryInterface(aIID, aInstancePtr);
}
return NS_NOINTERFACE;
}
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);
AddRef();
return NS_OK;
}
if (aIID.Equals(kIScriptContextOwnerIID)) {
*aInstancePtr = (void*) ((nsIScriptContextOwner*)this);
AddRef();
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);
mContentViewer = aContentViewer;
NS_ADDREF(aContentViewer);
mWindow->GetBounds(bounds);
bounds.x = bounds.y = 0;
rv = mContentViewer->Init(mWindow->GetNativeData(NS_NATIVE_WIDGET),
mDeviceContext,
mPrefs,
bounds,
mScrollPref);
if (NS_OK == rv) {
mContentViewer->Show();
}
// Now that we have switched documents, forget all of our children
ReleaseChildren();
return rv;
}
NS_IMETHODIMP
nsWebShell::Init(nsNativeWidget aNativeParent,
PRInt32 x, PRInt32 y, PRInt32 w, PRInt32 h,
nsScrollPreference aScrolling,
PRBool aAllowPlugins)
{
//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);
if ((PR_TRUE == aAllowPlugins) && (PR_FALSE == mPluginInited))
CreatePluginHost();
//never attempt to initialize plugins again...
mPluginInited = PR_TRUE;
mScrollPref = aScrolling;
WEB_TRACE(WEB_TRACE_CALLS,
("nsWebShell::Init: this=%p", this));
nsresult rv = NS_OK;
// 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) {
nsIDocumentLoader* parentLoader;
// Create a child document loader...
mParent->GetDocumentLoader(parentLoader);
if (NS_OK == rv) {
rv = parentLoader->CreateDocumentLoader(&mDocLoader);
NS_RELEASE(parentLoader);
}
} else {
rv = NSRepository::CreateInstance(kDocumentLoaderCID,
nsnull,
kIDocumentLoaderIID,
(void**)&mDocLoader);
}
if (NS_OK != rv) {
goto done;
}
//Register ourselves as an observer for the new doc loader
mDocLoader->AddObserver((nsIDocumentLoaderObserver*)this);
// Create device context
rv = NSRepository::CreateInstance(kDeviceContextCID, nsnull,
kIDeviceContextIID,
(void **)&mDeviceContext);
if (NS_OK != rv) {
goto done;
}
mDeviceContext->Init(aNativeParent);
mDeviceContext->SetDevUnitsToAppUnits(mDeviceContext->GetDevUnitsToTwips());
mDeviceContext->SetAppUnitsToDevUnits(mDeviceContext->GetTwipsToDevUnits());
// mDeviceContext->SetGamma(1.7f);
mDeviceContext->SetGamma(1.0f);
// Create a Native window for the shell container...
rv = NSRepository::CreateInstance(kChildCID,
(nsISupports*)((nsIWebShell*)this),
kISupportsIID,
(void**)&mInnerWindow);
if (NS_OK != rv) {
goto done;
}
mInnerWindow->QueryInterface(kIWidgetIID, (void**) &mWindow);
if (NS_OK != rv) {
NS_RELEASE(mInnerWindow);
}
else {
mWindow->Create(aNativeParent, aBounds, nsWebShell::HandleEvent,
mDeviceContext, nsnull);
// Get rid of extra reference count
mWindow->Release();
}
done:
return rv;
}
NS_IMETHODIMP
nsWebShell::Destroy()
{
nsresult rv = NS_OK;
// Stop any URLs that are currently being loaded...
mDocLoader->Stop();
// Cancel any timers that were set for this loader.
CancelRefreshURLTimers();
SetContainer(nsnull);
SetObserver(nsnull);
NS_IF_RELEASE(mContentViewer);
return rv;
}
NS_IMETHODIMP
nsWebShell::GetBounds(PRInt32 &x, PRInt32 &y, PRInt32 &w, PRInt32 &h)
{
nsRect aResult;
NS_PRECONDITION(nsnull != mWindow, "null window");
aResult.SetRect(0, 0, 0, 0);
if (nsnull != mWindow) {
mWindow->GetBounds(aResult);
}
x = aResult.x;
y = aResult.y;
w = aResult.width;
h = aResult.height;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetBounds(PRInt32 x, PRInt32 y, PRInt32 w, PRInt32 h)
{
NS_PRECONDITION(nsnull != mWindow, "null window");
if (nsnull != mWindow) {
// Don't have the widget repaint. Layout will generate repaint requests
// during reflow
mWindow->Resize(x, y, w, h,
PR_FALSE);
}
if (nsnull != mContentViewer) {
nsRect rr(0, 0, w, h);
mContentViewer->SetBounds(rr);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::MoveTo(PRInt32 aX, PRInt32 aY)
{
NS_PRECONDITION(nsnull != mWindow, "null window");
if (nsnull != mWindow) {
mWindow->Move(aX, aY);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::Show()
{
NS_PRECONDITION(nsnull != mWindow, "null window");
if (nsnull != mWindow) {
mWindow->Show(PR_TRUE);
}
if (nsnull != mContentViewer) {
mContentViewer->Show();
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::Hide()
{
NS_PRECONDITION(nsnull != mWindow, "null window");
if (nsnull != mWindow) {
mWindow->Show(PR_FALSE);
}
if (nsnull != mContentViewer) {
mContentViewer->Hide();
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::Repaint(PRBool aForce)
{
NS_PRECONDITION(nsnull != mWindow, "null window");
if (nsnull != mWindow) {
mWindow->Invalidate(aForce);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetContentViewer(nsIContentViewer* aViewer)
{
NS_IF_RELEASE(mContentViewer);
mContentViewer = aViewer;
NS_IF_ADDREF(aViewer);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetContentViewer(nsIContentViewer*& aResult)
{
aResult = mContentViewer;
NS_IF_ADDREF(mContentViewer);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetContainer(nsIWebShellContainer* aContainer)
{
NS_IF_RELEASE(mContainer);
mContainer = aContainer;
NS_IF_ADDREF(aContainer);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetContainer(nsIWebShellContainer*& aResult)
{
aResult = mContainer;
NS_IF_ADDREF(mContainer);
return NS_OK;
}
nsEventStatus PR_CALLBACK
nsWebShell::HandleEvent(nsGUIEvent *aEvent)
{
return nsEventStatus_eIgnore;
}
NS_IMETHODIMP
nsWebShell::SetObserver(nsIStreamObserver* anObserver)
{
NS_IF_RELEASE(mObserver);
mObserver = anObserver;
NS_IF_ADDREF(mObserver);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetObserver(nsIStreamObserver*& aResult)
{
aResult = mObserver;
NS_IF_ADDREF(mObserver);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetPrefs(nsIPref* aPrefs)
{
NS_IF_RELEASE(mPrefs);
mPrefs = aPrefs;
NS_IF_ADDREF(mPrefs);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetPrefs(nsIPref*& aPrefs)
{
aPrefs = mPrefs;
NS_IF_ADDREF(aPrefs);
return NS_OK;
}
nsresult
nsWebShell::GetRootWebShell(nsIWebShell*& aResult)
{
nsIWebShell* top = this;
NS_ADDREF(this);
for (;;) {
nsIWebShell* parent;
top->GetParent(parent);
if (nsnull == parent) {
break;
}
NS_RELEASE(top);
top = parent;
}
aResult = top;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetParent(nsIWebShell* aParent)
{
NS_IF_RELEASE(mParent);
mParent = aParent;
NS_IF_ADDREF(aParent);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetParent(nsIWebShell*& aParent)
{
aParent = mParent;
NS_IF_ADDREF(mParent);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetChildCount(PRInt32& aResult)
{
aResult = mChildren.Count();
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::AddChild(nsIWebShell* aChild)
{
NS_PRECONDITION(nsnull != aChild, "null ptr");
if (nsnull == aChild) {
return NS_ERROR_NULL_POINTER;
}
mChildren.AppendElement(aChild);
aChild->SetParent(this);
NS_ADDREF(aChild);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::ChildAt(PRInt32 aIndex, nsIWebShell*& aResult)
{
if (PRUint32(aIndex) >= PRUint32(mChildren.Count())) {
aResult = nsnull;
}
else {
aResult = (nsIWebShell*) mChildren.ElementAt(aIndex);
NS_IF_ADDREF(aResult);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetName(PRUnichar** aName)
{
*aName = mName;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetName(const PRUnichar* aName)
{
mName = aName;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::FindChildWithName(const PRUnichar* aName1,
nsIWebShell*& aResult)
{
aResult = nsnull;
nsString aName(aName1);
PRUnichar *childName;
PRInt32 i, n = mChildren.Count();
for (i = 0; i < n; i++) {
nsIWebShell* child = (nsIWebShell*) mChildren.ElementAt(i);
if (nsnull != child) {
child->GetName(&childName);
if (aName.Equals(childName)) {
aResult = child;
NS_ADDREF(child);
break;
}
// See if child contains the shell with the given name
nsresult rv = child->FindChildWithName(aName, aResult);
if (NS_OK != rv) {
return rv;
}
if (nsnull != aResult) {
break;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetMarginWidth(PRInt32& aWidth)
{
aWidth = mMarginWidth;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetMarginWidth(PRInt32 aWidth)
{
mMarginWidth = aWidth;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetMarginHeight(PRInt32& aHeight)
{
aHeight = mMarginHeight;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::SetMarginHeight(PRInt32 aHeight)
{
mMarginHeight = aHeight;
return NS_OK;
}
/**
* Document Load methods
*/
NS_IMETHODIMP
nsWebShell::GetDocumentLoader(nsIDocumentLoader*& aResult)
{
aResult = mDocLoader;
NS_IF_ADDREF(mDocLoader);
return (nsnull != mDocLoader) ? NS_OK : NS_ERROR_FAILURE;
}
#define FILE_PROTOCOL "file:///"
static void convertFileToURL(nsString &aIn, nsString &aOut)
{
#ifdef XP_PC
char szFile[1000];
aIn.ToCString(szFile, sizeof(szFile));
if (PL_strchr(szFile, '\\')) {
PRInt32 len = strlen(szFile);
PRInt32 sum = len + sizeof(FILE_PROTOCOL);
char* lpszFileURL = new char[sum];
// Translate '\' to '/'
for (PRInt32 i = 0; i < len; i++) {
if (szFile[i] == '\\') {
szFile[i] = '/';
}
if (szFile[i] == ':') {
szFile[i] = '|';
}
}
// Build the file URL
PR_snprintf(lpszFileURL, sum, "%s%s", FILE_PROTOCOL, szFile);
aOut = lpszFileURL;
}
else
#endif
{
aOut = aIn;
}
}
NS_IMETHODIMP
nsWebShell::LoadURL(const PRUnichar *aURLSpec,
nsIPostData* aPostData,
PRBool aModifyHistory)
{
nsresult rv;
PRInt32 colon, fSlash;
PRUnichar port;
nsAutoString urlSpec;
convertFileToURL(nsString(aURLSpec), urlSpec);
fSlash=urlSpec.Find('/');
// if no scheme (protocol) is found, assume http.
if ( ((colon=urlSpec.Find(':')) == -1) // no colon at all
|| ( (fSlash > -1) && (colon > fSlash) ) // the only colon comes after the first slash
|| ( (colon < urlSpec.Length()-1) // the first char after the first colon is a digit (i.e. a port)
&& ((port=urlSpec.CharAt(colon+1)) < '9')
&& (port > '0') )
) {
nsString httpDef("http://");
urlSpec.Insert(httpDef, 0, 7);
}
// Give web-shell-container right of refusal
if (nsnull != mContainer) {
rv = mContainer->WillLoadURL(this, urlSpec, nsLoadURL);
if (NS_OK != rv) {
return rv;
}
}
nsString* url = new nsString(urlSpec);
if (aModifyHistory) {
// Discard part of history that is no longer reachable
PRInt32 i, n = mHistory.Count();
i = mHistoryIndex + 1;
while (--n >= i) {
nsString* u = (nsString*) mHistory.ElementAt(n);
delete u;
mHistory.RemoveElementAt(n);
}
// Tack on new url
mHistory.AppendElement(url);
mHistoryIndex++;
}
else {
// Replace the current history index with this URL
nsString* u = (nsString*) mHistory.ElementAt(mHistoryIndex);
if (nsnull != u) {
delete u;
}
mHistory.ReplaceElementAt(url, mHistoryIndex);
}
ShowHistory();
// Tell web-shell-container we are loading a new url
if (nsnull != mContainer) {
rv = mContainer->BeginLoadURL(this, urlSpec);
if (NS_OK != rv) {
return rv;
}
}
Stop();
// Cancel any timers that were set for this loader.
CancelRefreshURLTimers();
rv = mDocLoader->LoadURL(urlSpec, // URL string
nsnull, // Command
this, // Container
aPostData, // Post Data
nsnull, // Extra Info...
mObserver); // Observer
return rv;
}
NS_IMETHODIMP nsWebShell::Stop(void)
{
if (mDocLoader) {
// Stop any documents that are currently being loaded...
mDocLoader->Stop();
// Cancel any timers that were set for this loader.
CancelRefreshURLTimers();
return NS_OK;
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsWebShell::Reload(nsReloadType aType)
{
nsString* s = (nsString*) mHistory.ElementAt(mHistoryIndex);
if (nsnull != s) {
// XXX What about the post data?
return LoadURL(*s, nsnull, PR_FALSE);
}
return NS_ERROR_FAILURE;
}
//----------------------------------------
// History methods
NS_IMETHODIMP
nsWebShell::Back(void)
{
return GoTo(mHistoryIndex - 1);
}
NS_IMETHODIMP
nsWebShell::CanBack(void)
{
return (mHistoryIndex > 0 ? NS_OK : NS_COMFALSE);
}
NS_IMETHODIMP
nsWebShell::Forward(void)
{
return GoTo(mHistoryIndex + 1);
}
NS_IMETHODIMP
nsWebShell::CanForward(void)
{
return (mHistoryIndex < mHistory.Count() - 1 ? NS_OK : NS_COMFALSE);
}
NS_IMETHODIMP
nsWebShell::GoTo(PRInt32 aHistoryIndex)
{
nsresult rv = NS_ERROR_ILLEGAL_VALUE;
if ((aHistoryIndex >= 0) &&
(aHistoryIndex < mHistory.Count())) {
nsString* s = (nsString*) mHistory.ElementAt(aHistoryIndex);
// Give web-shell-container right of refusal
nsAutoString urlSpec(*s);
if (nsnull != mContainer) {
rv = mContainer->WillLoadURL(this, urlSpec, nsLoadHistory);
if (NS_OK != rv) {
return rv;
}
}
printf("Goto %d\n", aHistoryIndex);
mHistoryIndex = aHistoryIndex;
ShowHistory();
// Tell web-shell-container we are loading a new url
if (nsnull != mContainer) {
rv = mContainer->BeginLoadURL(this, urlSpec);
if (NS_OK != rv) {
return rv;
}
}
// Stop any documents that are currently being loaded...
mDocLoader->Stop();
// Cancel any timers that were set for this loader.
CancelRefreshURLTimers();
rv = mDocLoader->LoadURL(urlSpec, // URL string
nsnull, // Command
this, // Container
nsnull, // Post Data
nsnull, // Extra Info...
mObserver); // Observer
}
return rv;
}
NS_IMETHODIMP
nsWebShell::GetHistoryIndex(PRInt32& aResult)
{
aResult = mHistoryIndex;
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetURL(PRInt32 aHistoryIndex, PRUnichar** aURLResult)
{
nsresult rv = NS_ERROR_ILLEGAL_VALUE;
if ((aHistoryIndex >= 0) &&
(aHistoryIndex <= mHistory.Count() - 1)) {
nsString* s = (nsString*) mHistory.ElementAt(aHistoryIndex);
if (nsnull != s) {
*aURLResult = *s;
}
rv = NS_OK;
}
return rv;
}
void
nsWebShell::ShowHistory()
{
#ifdef NS_DEBUG
if (WEB_LOG_TEST(gLogModule, WEB_TRACE_HISTORY)) {
PRInt32 i, n = mHistory.Count();
for (i = 0; i < n; i++) {
if (i == mHistoryIndex) {
printf("**");
}
else {
printf(" ");
}
nsString* u = (nsString*) mHistory.ElementAt(i);
fputs(*u, stdout);
printf("\n");
}
}
#endif
}
//----------------------------------------
// Chrome API's
NS_IMETHODIMP
nsWebShell::SetTitle(const PRUnichar* aTitle)
{
// Record local title
mTitle = aTitle;
// Title's set on the top level web-shell are passed ont to the container
if (nsnull == mParent) {
if (nsnull != mContainer) {
mContainer->SetTitle(aTitle);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::GetTitle(PRUnichar** aResult)
{
*aResult = mTitle;
return NS_OK;
}
//----------------------------------------------------------------------
// WebShell container implementation
NS_IMETHODIMP
nsWebShell::WillLoadURL(nsIWebShell* aShell, const PRUnichar* aURL, nsLoadType aReason)
{
if (nsnull != mContainer) {
return mContainer->WillLoadURL(aShell, aURL, aReason);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::BeginLoadURL(nsIWebShell* aShell, const PRUnichar* aURL)
{
if (nsnull != mContainer) {
return mContainer->BeginLoadURL(aShell, aURL);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::ProgressLoadURL(nsIWebShell* aShell,
const PRUnichar* aURL,
PRInt32 aProgress,
PRInt32 aProgressMax)
{
if (nsnull != mContainer) {
return mContainer->ProgressLoadURL(aShell, aURL, aProgress, aProgressMax);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::EndLoadURL(nsIWebShell* aShell, const PRUnichar* aURL, PRInt32 aStatus)
{
if (nsnull != mContainer) {
return mContainer->EndLoadURL(aShell, aURL, aStatus);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::OverLink(nsIWebShell* aShell, const PRUnichar* aURLSpec, const PRUnichar* aTargetSpec)
{
if (nsnull != mContainer) {
return mContainer->OverLink(aShell, aURLSpec, aTargetSpec);
}
return NS_OK;
}
//----------------------------------------------------------------------
// WebShell link handling
struct OnLinkClickEvent : public PLEvent {
OnLinkClickEvent(nsWebShell* aHandler, const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec, nsIPostData* aPostData = 0);
~OnLinkClickEvent();
void HandleEvent() {
mHandler->HandleLinkClickEvent(*mURLSpec, *mTargetSpec, mPostData);
}
nsWebShell* mHandler;
nsString* mURLSpec;
nsString* mTargetSpec;
nsIPostData* mPostData;
};
static void PR_CALLBACK HandlePLEvent(OnLinkClickEvent* aEvent)
{
aEvent->HandleEvent();
}
static void PR_CALLBACK DestroyPLEvent(OnLinkClickEvent* aEvent)
{
delete aEvent;
}
OnLinkClickEvent::OnLinkClickEvent(nsWebShell* aHandler,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIPostData* aPostData)
{
mHandler = aHandler;
NS_ADDREF(aHandler);
mURLSpec = new nsString(aURLSpec);
mTargetSpec = new nsString(aTargetSpec);
mPostData = aPostData;
NS_IF_ADDREF(mPostData);
#ifdef XP_PC
PL_InitEvent(this, nsnull,
(PLHandleEventProc) ::HandlePLEvent,
(PLDestroyEventProc) ::DestroyPLEvent);
PLEventQueue* eventQueue = PL_GetMainEventQueue();
PL_PostEvent(eventQueue, this);
#endif
#ifdef XP_UNIX
PL_InitEvent(this, nsnull,
(PLHandleEventProc) ::HandlePLEvent,
(PLDestroyEventProc) ::DestroyPLEvent);
PL_PostEvent(gWebShell_UnixEventQueue, this);
#endif
}
OnLinkClickEvent::~OnLinkClickEvent()
{
NS_IF_RELEASE(mHandler);
NS_IF_RELEASE(mPostData);
if (nsnull != mURLSpec) delete mURLSpec;
if (nsnull != mTargetSpec) delete mTargetSpec;
}
//----------------------------------------
NS_IMETHODIMP
nsWebShell::OnLinkClick(nsIFrame* aFrame,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIPostData* aPostData)
{
OnLinkClickEvent* ev;
nsresult rv = NS_OK;
ev = new OnLinkClickEvent(this, aURLSpec, aTargetSpec, aPostData);
if (nsnull == ev) {
rv = NS_ERROR_OUT_OF_MEMORY;
}
return rv;
}
// Find the web shell in the entire tree that we can reach that the
// link click should go to.
// XXX This doesn't yet know how to target other windows with their
// own tree
nsIWebShell*
nsWebShell::GetTarget(const PRUnichar* aName)
{
nsString name(aName);
nsIWebShell* target = nsnull;
if (name.EqualsIgnoreCase("_blank")) {
// XXX Need api in nsIWebShellContainer
NS_ASSERTION(0, "not implemented yet");
target = this;
NS_ADDREF(target);
}
else if (name.EqualsIgnoreCase("_self")) {
target = this;
NS_ADDREF(target);
}
else if (name.EqualsIgnoreCase("_parent")) {
if (nsnull == mParent) {
target = this;
}
else {
target = mParent;
}
NS_ADDREF(target);
}
else if (name.EqualsIgnoreCase("_top")) {
GetRootWebShell(target);
}
else {
// Look from the top of the tree downward
nsIWebShell* top;
GetRootWebShell(top);
top->FindChildWithName(aName, target);
if (nsnull == target) {
target = this;
NS_ADDREF(target);
}
NS_RELEASE(top);
}
return target;
}
void
nsWebShell::HandleLinkClickEvent(const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec,
nsIPostData* aPostData)
{
nsIWebShell* shell = GetTarget(aTargetSpec);
if (nsnull != shell) {
shell->LoadURL(aURLSpec, aPostData);
}
}
NS_IMETHODIMP
nsWebShell::OnOverLink(nsIFrame* aFrame,
const PRUnichar* aURLSpec,
const PRUnichar* aTargetSpec)
{
if (!mOverURL.Equals(aURLSpec) || !mOverTarget.Equals(aTargetSpec)) {
fputs("Was '", stdout); fputs(mOverURL, stdout); fputs("' '", stdout); fputs(mOverTarget, stdout); fputs("'\n", stdout);
fputs("Over link '", stdout);
fputs(aURLSpec, stdout);
fputs("' '", stdout);
fputs(aTargetSpec, stdout);
fputs("'\n", stdout);
mOverURL = aURLSpec;
mOverTarget = aTargetSpec;
nsIWebShell *mRootWebShell;
GetRootWebShell(mRootWebShell);
if (nsnull != mRootWebShell) {
nsIWebShellContainer *mRootContainer;
mRootWebShell->GetContainer(mRootContainer);
if (nsnull != mRootContainer) {
nsIBrowserWindow *mBrowser;
if (NS_OK == mRootContainer->QueryInterface(kIBrowserWindowIID, (void**)&mBrowser)) {
mBrowser->SetStatus(mOverURL);
NS_RELEASE(mBrowser);
}
NS_RELEASE(mRootContainer);
}
NS_RELEASE(mRootWebShell);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell:: GetLinkState(const PRUnichar* aURLSpec, nsLinkState& aState)
{
nsString URLSpec(aURLSpec);
aState = eLinkState_Unvisited;
#ifdef NS_DEBUG
if (URLSpec.Equals("http://visited/")) {
aState = eLinkState_Visited;
}
else if (URLSpec.Equals("http://out-of-date/")) {
aState = eLinkState_OutOfDate;
}
else if (URLSpec.Equals("http://active/")) {
aState = eLinkState_Active;
}
else if (URLSpec.Equals("http://hover/")) {
aState = eLinkState_Hover;
}
#endif
return NS_OK;
}
//----------------------------------------------------------------------
nsresult
nsWebShell::GetScriptContext(nsIScriptContext** aContext)
{
NS_PRECONDITION(nsnull != aContext, "null arg");
nsresult res = NS_OK;
if (nsnull == mScriptGlobal) {
res = NS_NewScriptGlobalObject(&mScriptGlobal);
if (NS_OK != res) {
return res;
}
mScriptGlobal->SetWebShell(this);
}
if (nsnull == mScriptContext) {
res = NS_CreateContext(mScriptGlobal, &mScriptContext);
if (NS_OK != res) {
return res;
}
}
*aContext = mScriptContext;
NS_ADDREF(mScriptContext);
return res;
}
nsresult
nsWebShell::GetScriptGlobalObject(nsIScriptGlobalObject** aGlobal)
{
NS_PRECONDITION(nsnull != aGlobal, "null arg");
nsresult res = NS_OK;
if (nsnull == mScriptGlobal) {
res = NS_NewScriptGlobalObject(&mScriptGlobal);
if (NS_OK != res) {
return res;
}
mScriptGlobal->SetWebShell(this);
}
*aGlobal = mScriptGlobal;
NS_IF_ADDREF(mScriptGlobal);
return res;
}
nsresult
nsWebShell::ReleaseScriptContext(nsIScriptContext *aContext)
{
// XXX Is this right? Why are we passing in a context?
NS_IF_RELEASE(aContext);
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::OnConnectionsComplete()
{
nsresult ret = NS_ERROR_FAILURE;
if (nsnull != mScriptGlobal) {
nsIDocumentViewer *mDocViewer;
if (nsnull != mContentViewer &&
NS_OK == mContentViewer->QueryInterface(kIDocumentViewerIID, (void**)&mDocViewer)) {
nsIPresContext *mPresContext;
if (NS_OK == mDocViewer->GetPresContext(mPresContext)) {
nsEventStatus mStatus = nsEventStatus_eIgnore;
nsMouseEvent mEvent;
mEvent.eventStructType = NS_EVENT;
mEvent.message = NS_PAGE_LOAD;
ret = mScriptGlobal->HandleDOMEvent(*mPresContext, &mEvent, nsnull, DOM_EVENT_INIT, mStatus);
NS_RELEASE(mPresContext);
}
NS_RELEASE(mDocViewer);
}
}
return ret;
}
/* For use with redirect/refresh url api */
class refreshData {
public:
nsIWebShell* shell;
nsString* aUrlSpec;
PRBool repeat;
PRInt32 delay;
};
NS_IMETHODIMP
nsWebShell::RefreshURL(nsIURL* aURL, PRInt32 millis, PRBool repeat)
{
NS_PRECONDITION((aURL != nsnull), "Null pointer");
refreshData *data= new refreshData();
nsITimer *timer=nsnull;
NS_PRECONDITION((nsnull != data), "Null pointer");
data->shell = this;
NS_ADDREF(data->shell);
data->aUrlSpec = new nsString(aURL->GetSpec());
data->delay = millis;
data->repeat = repeat;
/* Create the timer. */
if (NS_OK == NS_NewTimer(&timer)) {
/* Add the timer to our array. */
mRefreshments.AppendElement(timer);
timer->Init(nsWebShell::RefreshURLCallback, data, millis);
}
return NS_OK;
}
NS_IMETHODIMP
nsWebShell::CancelRefreshURLTimers(void) {
PRInt32 count = mRefreshments.Count();
PRInt32 tmp=0;
nsITimer* timer;
refreshData* data = nsnull;
/* Right now all we can do is cancel all the timers for this webshell. */
while (tmp < count) {
timer=(nsITimer*)mRefreshments.ElementAt(tmp);
/* ditch the mem allocated in/to data */
data = (refreshData*)timer->GetClosure();
if (data) {
NS_RELEASE(data->shell);
if (data->aUrlSpec)
delete data->aUrlSpec;
}
delete data;
mRefreshments.RemoveElementAt(tmp);
if (timer) {
timer->Cancel();
timer->Release();
}
tmp++;
}
return NS_OK;
}
void nsWebShell::RefreshURLCallback(nsITimer* aTimer, void* aClosure) {
refreshData *data=(refreshData*)aClosure;
NS_PRECONDITION((data != nsnull), "Null pointer...");
data->shell->LoadURL(*data->aUrlSpec, nsnull, PR_TRUE);
}
//----------------------------------------------------------------------
// Factory code for creating nsWebShell's
class nsWebShellFactory : public nsIFactory
{
public:
nsWebShellFactory();
virtual ~nsWebShellFactory();
// nsISupports methods
NS_IMETHOD QueryInterface(const nsIID &aIID, void **aResult);
NS_IMETHOD_(nsrefcnt) AddRef(void);
NS_IMETHOD_(nsrefcnt) Release(void);
// nsIFactory methods
NS_IMETHOD CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
private:
nsrefcnt mRefCnt;
};
nsWebShellFactory::nsWebShellFactory()
{
mRefCnt = 0;
}
nsWebShellFactory::~nsWebShellFactory()
{
NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
}
nsresult
nsWebShellFactory::QueryInterface(const nsIID &aIID, void **aResult)
{
if (aResult == NULL) {
return NS_ERROR_NULL_POINTER;
}
// Always NULL result, in case of failure
*aResult = NULL;
if (aIID.Equals(kISupportsIID)) {
*aResult = (void *)(nsISupports*)this;
} else if (aIID.Equals(kIFactoryIID)) {
*aResult = (void *)(nsIFactory*)this;
}
if (*aResult == NULL) {
return NS_NOINTERFACE;
}
AddRef(); // Increase reference count for caller
return NS_OK;
}
nsrefcnt
nsWebShellFactory::AddRef()
{
return ++mRefCnt;
}
nsrefcnt
nsWebShellFactory::Release()
{
if (--mRefCnt == 0) {
delete this;
return 0; // Don't access mRefCnt after deleting!
}
return mRefCnt;
}
nsresult
nsWebShellFactory::CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult)
{
nsresult rv;
nsWebShell *inst;
if (aResult == NULL) {
return NS_ERROR_NULL_POINTER;
}
*aResult = NULL;
if (nsnull != aOuter) {
rv = NS_ERROR_NO_AGGREGATION;
goto done;
}
inst = new nsWebShell();
if (inst == NULL) {
rv = NS_ERROR_OUT_OF_MEMORY;
goto done;
}
NS_ADDREF(inst);
rv = inst->QueryInterface(aIID, aResult);
NS_RELEASE(inst);
done:
return rv;
}
nsresult
nsWebShellFactory::LockFactory(PRBool aLock)
{
// Not implemented in simplest case.
return NS_OK;
}
extern "C" NS_WEB nsresult
NS_NewWebShellFactory(nsIFactory** aFactory)
{
nsresult rv = NS_OK;
nsIFactory* inst = new nsWebShellFactory();
if (nsnull == inst) {
rv = NS_ERROR_OUT_OF_MEMORY;
}
else {
NS_ADDREF(inst);
}
*aFactory = inst;
return rv;
}
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