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gecko-dev/docshell/base/nsWebShell.cpp
gerv%gerv.net 9d2ee4928c Bug 236613: change to MPL/LGPL/GPL tri-license.
2004-04-17 21:52:36 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Dan Rosen <dr@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 ***** */
#include "nsDocShell.h"
#include "nsIWebShell.h"
#include "nsWebShell.h"
#include "nsIWebBrowserChrome.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIWebProgress.h"
#include "nsIDocumentLoader.h"
#include "nsIContentViewer.h"
#include "nsIDocumentViewer.h"
#include "nsIMarkupDocumentViewer.h"
#include "nsIClipboardCommands.h"
#include "nsILinkHandler.h"
#include "nsIStreamListener.h"
#include "nsIPrompt.h"
#include "nsNetUtil.h"
#include "nsIDNSService.h"
#include "nsISocketProvider.h"
#include "nsIRefreshURI.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptGlobalObjectOwner.h"
#include "nsIDOMEvent.h"
#include "nsIPresContext.h"
#include "nsIComponentManager.h"
#include "nsIEventQueueService.h"
#include "nsCRT.h"
#include "nsVoidArray.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "plevent.h"
#include "prprf.h"
#include "nsIPluginHost.h"
#include "nsplugin.h"
#include "nsIPluginManager.h"
#include "nsCDefaultURIFixup.h"
#include "nsIContent.h"
#include "prlog.h"
#include "nsCOMPtr.h"
#include "nsIPresShell.h"
#include "nsIWebShellServices.h"
#include "nsIGlobalHistory.h"
#include "prmem.h"
#include "prthread.h"
#include "nsXPIDLString.h"
#include "nsDOMError.h"
#include "nsIDOMRange.h"
#include "nsIURIContentListener.h"
#include "nsIDOMDocument.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsIBaseWindow.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShellTreeNode.h"
#include "nsIDocShellTreeOwner.h"
#include "nsCURILoader.h"
#include "nsIDOMWindowInternal.h"
#include "nsEscape.h"
#include "nsIPlatformCharset.h"
#include "nsICharsetConverterManager.h"
#include "nsISocketTransportService.h"
#include "nsTextFormatter.h"
#include "nsPIDOMWindow.h"
#include "nsPICommandUpdater.h"
#include "nsIController.h"
#include "nsIFocusController.h"
#include "nsGUIEvent.h"
#include "nsISHistoryInternal.h"
#include "nsIHttpChannel.h"
#include "nsIUploadChannel.h"
#include "nsISeekableStream.h"
#include "nsILocaleService.h"
#include "nsIStringBundle.h"
#include "nsICachingChannel.h"
//XXX for nsIPostData; this is wrong; we shouldn't see the nsIDocument type
#include "nsIDocument.h"
#include "nsITextToSubURI.h"
#include "nsIExternalProtocolService.h"
#include "nsCExternalHandlerService.h"
// Used in the fixup code
#include "prnetdb.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("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
//----------------------------------------------------------------------
static PRBool
IsOffline()
{
PRBool offline = PR_TRUE;
nsCOMPtr<nsIIOService> ios(do_GetIOService());
if (ios)
ios->GetOffline(&offline);
return offline;
}
//----------------------------------------------------------------------
// Note: operator new zeros our memory
nsWebShell::nsWebShell() : nsDocShell()
{
#ifdef DEBUG
// We're counting the number of |nsWebShells| to help find leaks
++gNumberOfWebShells;
#endif
#ifdef DEBUG
printf("++WEBSHELL == %ld\n", gNumberOfWebShells);
#endif
mThread = nsnull;
InitFrameData();
mItemType = typeContent;
mCharsetReloadState = eCharsetReloadInit;
}
nsWebShell::~nsWebShell()
{
Destroy();
// Stop any pending document loads and destroy the loader...
if (mDocLoader) {
mDocLoader->Stop();
mDocLoader->SetContainer(nsnull);
mDocLoader->Destroy();
mDocLoader = nsnull;
}
// 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
mContentViewer=nsnull;
mDeviceContext=nsnull;
NS_IF_RELEASE(mContainer);
if (mScriptGlobal) {
mScriptGlobal->SetDocShell(nsnull);
mScriptGlobal = nsnull;
}
if (mScriptContext) {
mScriptContext->SetOwner(nsnull);
mScriptContext = nsnull;
}
InitFrameData();
#ifdef DEBUG
// We're counting the number of |nsWebShells| to help find leaks
--gNumberOfWebShells;
#endif
#ifdef DEBUG
printf("--WEBSHELL == %ld\n", gNumberOfWebShells);
#endif
}
void nsWebShell::InitFrameData()
{
SetMarginWidth(-1);
SetMarginHeight(-1);
}
nsresult
nsWebShell::EnsureCommandHandler()
{
if (!mCommandManager)
{
mCommandManager = do_CreateInstance("@mozilla.org/embedcomp/command-manager;1");
if (!mCommandManager) return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsPICommandUpdater> commandUpdater = do_QueryInterface(mCommandManager);
if (!commandUpdater) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMWindow> domWindow = do_GetInterface(NS_STATIC_CAST(nsIInterfaceRequestor *, this));
#ifdef DEBUG
nsresult rv =
#endif
commandUpdater->Init(domWindow);
NS_ASSERTION(NS_SUCCEEDED(rv), "Initting command manager failed");
}
return mCommandManager ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMPL_ADDREF_INHERITED(nsWebShell, nsDocShell)
NS_IMPL_RELEASE_INHERITED(nsWebShell, nsDocShell)
NS_INTERFACE_MAP_BEGIN(nsWebShell)
NS_INTERFACE_MAP_ENTRY(nsIWebShell)
NS_INTERFACE_MAP_ENTRY(nsIWebShellServices)
NS_INTERFACE_MAP_ENTRY(nsIWebShellContainer)
NS_INTERFACE_MAP_ENTRY(nsILinkHandler)
NS_INTERFACE_MAP_ENTRY(nsIClipboardCommands)
NS_INTERFACE_MAP_END_INHERITING(nsDocShell)
NS_IMETHODIMP
nsWebShell::GetInterface(const nsIID &aIID, void** aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
nsresult rv = NS_OK;
*aInstancePtr = nsnull;
if(aIID.Equals(NS_GET_IID(nsILinkHandler)))
{
// Note: If we ever allow for registering other link handlers,
// we need to make sure that link handler implementations take
// the necessary precautions to prevent the security compromise
// that is blocked by nsWebSell::OnLinkClickSync().
*aInstancePtr = NS_STATIC_CAST(nsILinkHandler*, this);
NS_ADDREF((nsISupports*)*aInstancePtr);
return NS_OK;
}
else if(aIID.Equals(NS_GET_IID(nsIScriptGlobalObjectOwner)))
{
*aInstancePtr = NS_STATIC_CAST(nsIScriptGlobalObjectOwner*, this);
NS_ADDREF((nsISupports*)*aInstancePtr);
return NS_OK;
}
else if(aIID.Equals(NS_GET_IID(nsIScriptGlobalObject)))
{
NS_ENSURE_SUCCESS(EnsureScriptEnvironment(), NS_ERROR_FAILURE);
*aInstancePtr = mScriptGlobal;
NS_ADDREF((nsISupports*)*aInstancePtr);
return NS_OK;
}
else if(aIID.Equals(NS_GET_IID(nsIDOMWindowInternal)) ||
aIID.Equals(NS_GET_IID(nsIDOMWindow)))
{
NS_ENSURE_SUCCESS(EnsureScriptEnvironment(), NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(mScriptGlobal->QueryInterface(aIID, aInstancePtr),
NS_ERROR_FAILURE);
return NS_OK;
}
else if(aIID.Equals(NS_GET_IID(nsICommandManager)))
{
NS_ENSURE_SUCCESS(EnsureCommandHandler(), NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(mCommandManager->QueryInterface(NS_GET_IID(nsICommandManager),
aInstancePtr), NS_ERROR_FAILURE);
return NS_OK;
}
if (!*aInstancePtr || NS_FAILED(rv))
return nsDocShell::GetInterface(aIID,aInstancePtr);
else
return rv;
}
NS_IMETHODIMP
nsWebShell::SetContainer(nsIWebShellContainer* aContainer)
{
NS_IF_RELEASE(mContainer);
mContainer = aContainer;
NS_IF_ADDREF(mContainer);
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;
}
/**
* Document Load methods
*/
NS_IMETHODIMP
nsWebShell::GetDocumentLoader(nsIDocumentLoader*& aResult)
{
aResult = mDocLoader;
if (!mDocLoader)
return NS_ERROR_FAILURE;
NS_ADDREF(aResult);
return NS_OK;
}
//----------------------------------------------------------------------
// Web Shell Services API
//This functions is only called when a new charset is detected in loading a document.
//Its name should be changed to "CharsetReloadDocument"
NS_IMETHODIMP
nsWebShell::ReloadDocument(const char* aCharset,
PRInt32 aSource)
{
// XXX hack. kee the aCharset and aSource wait to pick it up
nsCOMPtr<nsIContentViewer> cv;
NS_ENSURE_SUCCESS(GetContentViewer(getter_AddRefs(cv)), NS_ERROR_FAILURE);
if (cv)
{
nsCOMPtr<nsIMarkupDocumentViewer> muDV = do_QueryInterface(cv);
if (muDV)
{
PRInt32 hint;
muDV->GetHintCharacterSetSource(&hint);
if( aSource > hint )
{
muDV->SetHintCharacterSet(nsDependentCString(aCharset));
muDV->SetHintCharacterSetSource(aSource);
if(eCharsetReloadRequested != mCharsetReloadState)
{
mCharsetReloadState = eCharsetReloadRequested;
return Reload(LOAD_FLAGS_CHARSET_CHANGE);
}
}
}
}
//return failer if this request is not accepted due to mCharsetReloadState
return NS_ERROR_WEBSHELL_REQUEST_REJECTED;
}
NS_IMETHODIMP
nsWebShell::StopDocumentLoad(void)
{
if(eCharsetReloadRequested != mCharsetReloadState)
{
Stop(nsIWebNavigation::STOP_ALL);
return NS_OK;
}
//return failer if this request is not accepted due to mCharsetReloadState
return NS_ERROR_WEBSHELL_REQUEST_REJECTED;
}
NS_IMETHODIMP
nsWebShell::SetRendering(PRBool aRender)
{
if(eCharsetReloadRequested != mCharsetReloadState)
{
if (mContentViewer) {
mContentViewer->SetEnableRendering(aRender);
return NS_OK;
}
}
//return failer if this request is not accepted due to mCharsetReloadState
return NS_ERROR_WEBSHELL_REQUEST_REJECTED;
}
//----------------------------------------------------------------------
// WebShell link handling
struct OnLinkClickEvent : public PLEvent {
OnLinkClickEvent(nsWebShell* aHandler, nsIContent* aContent,
nsLinkVerb aVerb, nsIURI* aURI,
const PRUnichar* aTargetSpec, nsIInputStream* aPostDataStream = 0,
nsIInputStream* aHeadersDataStream = 0);
~OnLinkClickEvent();
void HandleEvent() {
mHandler->OnLinkClickSync(mContent, mVerb, mURI,
mTargetSpec.get(), mPostDataStream,
mHeadersDataStream,
nsnull, nsnull);
}
nsWebShell* mHandler;
nsCOMPtr<nsIURI> mURI;
nsString mTargetSpec;
nsCOMPtr<nsIInputStream> mPostDataStream;
nsCOMPtr<nsIInputStream> mHeadersDataStream;
nsCOMPtr<nsIContent> mContent;
nsLinkVerb mVerb;
};
static void PR_CALLBACK HandlePLEvent(OnLinkClickEvent* aEvent)
{
aEvent->HandleEvent();
}
static void PR_CALLBACK DestroyPLEvent(OnLinkClickEvent* aEvent)
{
delete aEvent;
}
OnLinkClickEvent::OnLinkClickEvent(nsWebShell* aHandler,
nsIContent *aContent,
nsLinkVerb aVerb,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream,
nsIInputStream* aHeadersDataStream)
{
mHandler = aHandler;
NS_ADDREF(aHandler);
mURI = aURI;
mTargetSpec.Assign(aTargetSpec);
mPostDataStream = aPostDataStream;
mHeadersDataStream = aHeadersDataStream;
mContent = aContent;
mVerb = aVerb;
PL_InitEvent(this, nsnull,
(PLHandleEventProc) ::HandlePLEvent,
(PLDestroyEventProc) ::DestroyPLEvent);
nsCOMPtr<nsIEventQueue> eventQueue;
aHandler->GetEventQueue(getter_AddRefs(eventQueue));
NS_ASSERTION(eventQueue, "no event queue");
if (eventQueue)
eventQueue->PostEvent(this);
}
OnLinkClickEvent::~OnLinkClickEvent()
{
NS_IF_RELEASE(mHandler);
}
//----------------------------------------
NS_IMETHODIMP
nsWebShell::OnLinkClick(nsIContent* aContent,
nsLinkVerb aVerb,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream,
nsIInputStream* aHeadersDataStream)
{
OnLinkClickEvent* ev;
ev = new OnLinkClickEvent(this, aContent, aVerb, aURI,
aTargetSpec, aPostDataStream, aHeadersDataStream);
if (!ev) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
nsresult
nsWebShell::GetEventQueue(nsIEventQueue **aQueue)
{
NS_ENSURE_ARG_POINTER(aQueue);
*aQueue = 0;
nsCOMPtr<nsIEventQueueService> eventService(do_GetService(NS_EVENTQUEUESERVICE_CONTRACTID));
if (eventService)
eventService->GetThreadEventQueue(mThread, aQueue);
return *aQueue ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsWebShell::OnLinkClickSync(nsIContent *aContent,
nsLinkVerb aVerb,
nsIURI* aURI,
const PRUnichar* aTargetSpec,
nsIInputStream* aPostDataStream,
nsIInputStream* aHeadersDataStream,
nsIDocShell** aDocShell,
nsIRequest** aRequest)
{
PRBool earlyReturn = PR_FALSE;
{
// defer to an external protocol handler if necessary...
nsCOMPtr<nsIExternalProtocolService> extProtService = do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID);
if (extProtService) {
nsCAutoString scheme;
aURI->GetScheme(scheme);
if (!scheme.IsEmpty()) {
// if the URL scheme does not correspond to an exposed protocol, then we
// need to hand this link click over to the external protocol handler.
PRBool isExposed;
nsresult rv = extProtService->IsExposedProtocol(scheme.get(), &isExposed);
if (NS_SUCCEEDED(rv) && !isExposed) {
rv = extProtService->LoadUrl(aURI);
if (NS_SUCCEEDED(rv))
earlyReturn = PR_TRUE;
else
NS_WARNING("failed to launch external protocol handler");
}
}
}
}
if (earlyReturn)
return NS_OK;
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(aContent));
NS_ENSURE_TRUE(node, NS_ERROR_UNEXPECTED);
PRBool isJS = PR_FALSE;
PRBool isData = PR_FALSE;
aURI->SchemeIs("javascript", &isJS);
aURI->SchemeIs("data", &isData);
if (isJS || isData) {
nsCOMPtr<nsIDocument> sourceDoc = aContent->GetDocument();
if (!sourceDoc) {
// The source is in a 'zombie' document, or not part of a
// document any more. Don't let it execute any javascript in the
// new document.
return NS_OK;
}
nsCOMPtr<nsIPresShell> presShell;
GetPresShell(getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
nsCOMPtr<nsIDocument> currentDoc;
presShell->GetDocument(getter_AddRefs(currentDoc));
if (currentDoc != sourceDoc) {
// The source is not in the current document, don't let it
// execute any javascript in the current document.
return NS_OK;
}
}
// Get the owner document of the link that was clicked, this will be
// the document that the link is in, or the last document that the
// link was in. From that document, we'll get the URI to use as the
// referer, since the current URI in this webshell/docshell may be a
// new document that we're in the process of loading.
nsCOMPtr<nsIDOMDocument> refererOwnerDoc;
node->GetOwnerDocument(getter_AddRefs(refererOwnerDoc));
nsCOMPtr<nsIDocument> refererDoc(do_QueryInterface(refererOwnerDoc));
NS_ENSURE_TRUE(refererDoc, NS_ERROR_UNEXPECTED);
nsIURI *referer = refererDoc->GetDocumentURI();
// referer could be null here in some odd cases, but that's ok,
// we'll just load the link w/o sending a referer in those cases.
nsAutoString target(aTargetSpec);
// If this is an anchor element, grab its type property to use as a hint
nsAutoString typeHint;
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(aContent));
if (anchor) {
anchor->GetType(typeHint);
}
// Initialize the DocShell / Request
if (aDocShell) {
*aDocShell = nsnull;
}
if (aRequest) {
*aRequest = nsnull;
}
switch(aVerb) {
case eLinkVerb_New:
target.Assign(NS_LITERAL_STRING("_blank"));
// Fall into replace case
case eLinkVerb_Undefined:
// Fall through, this seems like the most reasonable action
case eLinkVerb_Replace:
{
return InternalLoad(aURI, // New URI
referer, // Referer URI
nsnull, // No onwer
PR_TRUE, // Inherit owner from document
target.get(), // Window target
NS_LossyConvertUCS2toASCII(typeHint).get(),
aPostDataStream, // Post data stream
aHeadersDataStream, // Headers stream
LOAD_LINK, // Load type
nsnull, // No SHEntry
PR_TRUE, // first party site
aDocShell, // DocShell out-param
aRequest); // Request out-param
}
break;
case eLinkVerb_Embed:
// XXX TODO Should be similar to the HTML IMG ALT attribute handling
// in NS 4.x
default:
NS_ABORT_IF_FALSE(0,"unexpected link verb");
return NS_ERROR_UNEXPECTED;
}
}
NS_IMETHODIMP
nsWebShell::OnOverLink(nsIContent* aContent,
nsIURI* aURI,
const PRUnichar* aTargetSpec)
{
nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(mTreeOwner));
nsresult rv = NS_ERROR_FAILURE;
if (browserChrome) {
nsCOMPtr<nsITextToSubURI> textToSubURI = do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
// use url origin charset to unescape the URL
nsCAutoString charset;
rv = aURI->GetOriginCharset(charset);
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString spec;
rv = aURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoString uStr;
rv = textToSubURI->UnEscapeURIForUI(charset, spec, uStr);
if (NS_SUCCEEDED(rv))
rv = browserChrome->SetStatus(nsIWebBrowserChrome::STATUS_LINK, uStr.get());
}
return rv;
}
NS_IMETHODIMP
nsWebShell::OnLeaveLink()
{
nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(mTreeOwner));
nsresult rv = NS_ERROR_FAILURE;
if (browserChrome) {
rv = browserChrome->SetStatus(nsIWebBrowserChrome::STATUS_LINK,
EmptyString().get());
}
return rv;
}
NS_IMETHODIMP
nsWebShell::GetLinkState(nsIURI* aLinkURI, nsLinkState& aState)
{
if (!aLinkURI) {
// No uri means not a link
aState = eLinkState_NotLink;
return NS_OK;
}
aState = eLinkState_Unvisited;
// no history, leave state unchanged
if (!mGlobalHistory)
return NS_OK;
PRBool isVisited;
NS_ENSURE_SUCCESS(mGlobalHistory->IsVisited(aLinkURI, &isVisited),
NS_ERROR_FAILURE);
if (isVisited)
aState = eLinkState_Visited;
return NS_OK;
}
//----------------------------------------------------------------------
nsresult nsWebShell::EndPageLoad(nsIWebProgress *aProgress,
nsIChannel* channel,
nsresult aStatus)
{
nsresult rv = NS_OK;
if(!channel)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIURI> url;
rv = channel->GetURI(getter_AddRefs(url));
if (NS_FAILED(rv)) return rv;
// clean up reload state for meta charset
if(eCharsetReloadRequested == mCharsetReloadState)
mCharsetReloadState = eCharsetReloadStopOrigional;
else
mCharsetReloadState = eCharsetReloadInit;
//
// one of many safeguards that prevent death and destruction if
// someone is so very very rude as to bring this window down
// during this load handler.
//
nsCOMPtr<nsIWebShell> kungFuDeathGrip(this);
nsDocShell::EndPageLoad(aProgress, channel, aStatus);
// Test if this is the top frame or a subframe
PRBool isTopFrame = PR_TRUE;
nsCOMPtr<nsIDocShellTreeItem> targetParentTreeItem;
rv = GetSameTypeParent(getter_AddRefs(targetParentTreeItem));
if (NS_SUCCEEDED(rv) && targetParentTreeItem)
{
isTopFrame = PR_FALSE;
}
//
// If the page load failed, then deal with the error condition...
// Errors are handled as follows:
// 1. Check to see if it a file not found error.
// 2. Send the URI to a keyword server (if enabled)
// 3. If the error was DNS failure, then add www and .com to the URI
// (if appropriate).
// 4. Throw an error dialog box...
//
if(url && NS_FAILED(aStatus)) {
if (aStatus == NS_ERROR_FILE_NOT_FOUND) {
DisplayLoadError(aStatus, url, nsnull);
return NS_OK;
}
// Create the fixup object if necessary
if (!mURIFixup)
{
mURIFixup = do_GetService(NS_URIFIXUP_CONTRACTID);
}
if (mURIFixup)
{
//
// Try and make an alternative URI from the old one
//
nsCOMPtr<nsIURI> newURI;
nsCAutoString oldSpec;
url->GetSpec(oldSpec);
//
// First try keyword fixup
//
if (aStatus == NS_ERROR_UNKNOWN_HOST)
{
PRBool keywordsEnabled = PR_FALSE;
if (mPrefs && NS_FAILED(mPrefs->GetBoolPref("keyword.enabled", &keywordsEnabled)))
keywordsEnabled = PR_FALSE;
nsCAutoString host;
url->GetHost(host);
nsCAutoString scheme;
url->GetScheme(scheme);
PRInt32 dotLoc = host.FindChar('.');
// we should only perform a keyword search under the following conditions:
// (0) Pref keyword.enabled is true
// (1) the url scheme is http (or https)
// (2) the url does not have a protocol scheme
// If we don't enforce such a policy, then we end up doing keyword searchs on urls
// we don't intend like imap, file, mailbox, etc. This could lead to a security
// problem where we send data to the keyword server that we shouldn't be.
// Someone needs to clean up keywords in general so we can determine on a per url basis
// if we want keywords enabled...this is just a bandaid...
if (keywordsEnabled && !scheme.IsEmpty() &&
(scheme.Find("http") != 0)) {
keywordsEnabled = PR_FALSE;
}
// Don't perform fixup on an IP address
PRNetAddr addr;
if(PR_StringToNetAddr(host.get(), &addr) == PR_SUCCESS) {
keywordsEnabled = PR_FALSE;
}
if(keywordsEnabled && (-1 == dotLoc)) {
// only send non-qualified hosts to the keyword server
nsCAutoString keywordSpec("keyword:");
keywordSpec += host;
NS_NewURI(getter_AddRefs(newURI),
keywordSpec, nsnull);
} // end keywordsEnabled
}
//
// Now try change the address, e.g. turn http://foo into http://www.foo.com
//
if (aStatus == NS_ERROR_UNKNOWN_HOST ||
aStatus == NS_ERROR_NET_RESET)
{
PRBool doCreateAlternate = PR_TRUE;
// Skip fixup for anything except a normal document load operation on
// the topframe.
if (mLoadType != LOAD_NORMAL || !isTopFrame)
{
doCreateAlternate = PR_FALSE;
}
else
{
// Test if keyword lookup produced a new URI or not
if (newURI)
{
PRBool sameURI = PR_FALSE;
url->Equals(newURI, &sameURI);
if (!sameURI)
{
// Keyword lookup made a new URI so no need to try an
// alternate one.
doCreateAlternate = PR_FALSE;
}
}
}
if (doCreateAlternate)
{
newURI = nsnull;
mURIFixup->CreateFixupURI(oldSpec,
nsIURIFixup::FIXUP_FLAGS_MAKE_ALTERNATE_URI, getter_AddRefs(newURI));
}
}
//
// Did we make a new URI that is different to the old one? If so load it.
//
if (newURI)
{
// Make sure the new URI is different from the old one, otherwise
// there's little point trying to load it again.
PRBool sameURI = PR_FALSE;
url->Equals(newURI, &sameURI);
if (!sameURI)
{
nsCAutoString newSpec;
newURI->GetSpec(newSpec);
NS_ConvertUTF8toUCS2 newSpecW(newSpec);
// This seems evil, since it is modifying the original URL
rv = url->SetSpec(newSpec);
if (NS_FAILED(rv)) return rv;
return LoadURI(newSpecW.get(), // URI string
LOAD_FLAGS_NONE, // Load flags
nsnull, // Referring URI
nsnull, // Post data stream
nsnull); // Headers stream
}
}
}
//
// Well, fixup didn't work :-(
// It is time to throw an error dialog box, and be done with it...
//
// Errors to be shown only on top-level frames
if ((aStatus == NS_ERROR_UNKNOWN_HOST ||
aStatus == NS_ERROR_CONNECTION_REFUSED ||
aStatus == NS_ERROR_UNKNOWN_PROXY_HOST ||
aStatus == NS_ERROR_PROXY_CONNECTION_REFUSED) &&
(isTopFrame || mUseErrorPages)) {
DisplayLoadError(aStatus, url, nsnull);
}
// Errors to be shown for any frame
else if (aStatus == NS_ERROR_NET_TIMEOUT ||
aStatus == NS_ERROR_REDIRECT_LOOP ||
aStatus == NS_ERROR_UNKNOWN_SOCKET_TYPE ||
aStatus == NS_ERROR_NET_INTERRUPT ||
aStatus == NS_ERROR_NET_RESET) {
DisplayLoadError(aStatus, url, nsnull);
}
else if (aStatus == NS_ERROR_DOCUMENT_NOT_CACHED) {
/* A document that was requested to be fetched *only* from
* the cache is not in cache. May be this is one of those
* postdata results. Throw a dialog to the user,
* saying that the page has expired from cache and ask if
* they wish to refetch the page from the net. Do this only
* if the request is a form post.
*/
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
nsCAutoString method;
if (httpChannel)
httpChannel->GetRequestMethod(method);
if (method.Equals("POST") && !IsOffline()) {
nsCOMPtr<nsIPrompt> prompter;
PRBool repost;
nsCOMPtr<nsIStringBundle> stringBundle;
GetPromptAndStringBundle(getter_AddRefs(prompter),
getter_AddRefs(stringBundle));
if (stringBundle && prompter) {
nsXPIDLString messageStr;
nsresult rv = stringBundle->GetStringFromName(NS_LITERAL_STRING("repost").get(),
getter_Copies(messageStr));
if (NS_SUCCEEDED(rv) && messageStr) {
prompter->Confirm(nsnull, messageStr, &repost);
/* If the user pressed cancel in the dialog,
* return failure. Don't try to load the page with out
* the post data.
*/
if (!repost)
return NS_OK;
// The user wants to repost the data to the server.
// If the page was loaded due to a back/forward/go
// operation, update the session history index.
// This is similar to the updating done in
// nsDocShell::OnNewURI() for regular pages
nsCOMPtr<nsISHistory> rootSH=mSessionHistory;
if (!mSessionHistory) {
nsCOMPtr<nsIDocShellTreeItem> root;
//Get the root docshell
GetSameTypeRootTreeItem(getter_AddRefs(root));
if (root) {
// QI root to nsIWebNavigation
nsCOMPtr<nsIWebNavigation> rootAsWebnav(do_QueryInterface(root));
if (rootAsWebnav) {
// Get the handle to SH from the root docshell
rootAsWebnav->GetSessionHistory(getter_AddRefs(rootSH));
}
}
} // mSessionHistory
if (rootSH && (mLoadType & LOAD_CMD_HISTORY)) {
nsCOMPtr<nsISHistoryInternal> shInternal(do_QueryInterface(rootSH));
if (shInternal)
shInternal->UpdateIndex();
}
/* The user does want to repost the data to the server.
* Initiate a new load again.
*/
/* Get the postdata if any from the channel */
nsCOMPtr<nsIInputStream> inputStream;
nsCOMPtr<nsIURI> referrer;
if (channel) {
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
if(httpChannel) {
httpChannel->GetReferrer(getter_AddRefs(referrer));
nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(channel));
if (uploadChannel) {
uploadChannel->GetUploadStream(getter_AddRefs(inputStream));
}
}
}
nsCOMPtr<nsISeekableStream> postDataSeekable(do_QueryInterface(inputStream));
if (postDataSeekable)
{
postDataSeekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
}
InternalLoad(url, // URI
referrer, // Referring URI
nsnull, // Owner
PR_TRUE, // Inherit owner
nsnull, // No window target
nsnull, // No type hint
inputStream, // Post data stream
nsnull, // No headers stream
LOAD_RELOAD_BYPASS_PROXY_AND_CACHE,// Load type
nsnull, // No SHEntry
PR_TRUE, // first party site
nsnull, // No nsIDocShell
nsnull); // No nsIRequest
}
}
}
else {
DisplayLoadError(aStatus, url, nsnull);
}
}
} // if we have a host
return NS_OK;
}
//
// Routines for selection and clipboard
//
#ifdef XP_MAC
#pragma mark -
#endif
nsresult
nsWebShell::GetControllerForCommand ( const char * inCommand, nsIController** outController )
{
NS_ENSURE_ARG_POINTER(outController);
*outController = nsnull;
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsPIDOMWindow> window ( do_QueryInterface(mScriptGlobal) );
if ( window ) {
nsCOMPtr<nsIFocusController> focusController;
rv = window->GetRootFocusController ( getter_AddRefs(focusController) );
if ( focusController )
rv = focusController->GetControllerForCommand ( inCommand, outController );
} // if window
return rv;
} // GetControllerForCommand
nsresult
nsWebShell::IsCommandEnabled ( const char * inCommand, PRBool* outEnabled )
{
NS_ENSURE_ARG_POINTER(outEnabled);
*outEnabled = PR_FALSE;
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIController> controller;
rv = GetControllerForCommand ( inCommand, getter_AddRefs(controller) );
if ( controller )
rv = controller->IsCommandEnabled(inCommand, outEnabled);
return rv;
}
nsresult
nsWebShell::DoCommand ( const char * inCommand )
{
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIController> controller;
rv = GetControllerForCommand ( inCommand, getter_AddRefs(controller) );
if ( controller )
rv = controller->DoCommand(inCommand);
return rv;
}
NS_IMETHODIMP
nsWebShell::CanCutSelection(PRBool* aResult)
{
return IsCommandEnabled ( "cmd_cut", aResult );
}
NS_IMETHODIMP
nsWebShell::CanCopySelection(PRBool* aResult)
{
return IsCommandEnabled ( "cmd_copy", aResult );
}
NS_IMETHODIMP
nsWebShell::CanCopyLinkLocation(PRBool* aResult)
{
return IsCommandEnabled ( "cmd_copyLink", aResult );
}
NS_IMETHODIMP
nsWebShell::CanCopyImageLocation(PRBool* aResult)
{
return IsCommandEnabled ( "cmd_copyImageLocation",
aResult );
}
NS_IMETHODIMP
nsWebShell::CanCopyImageContents(PRBool* aResult)
{
return IsCommandEnabled ( "cmd_copyImageContents",
aResult );
}
NS_IMETHODIMP
nsWebShell::CanPaste(PRBool* aResult)
{
return IsCommandEnabled ( "cmd_paste", aResult );
}
NS_IMETHODIMP
nsWebShell::CutSelection(void)
{
return DoCommand ( "cmd_cut" );
}
NS_IMETHODIMP
nsWebShell::CopySelection(void)
{
return DoCommand ( "cmd_copy" );
}
NS_IMETHODIMP
nsWebShell::CopyLinkLocation(void)
{
return DoCommand ( "cmd_copyLink" );
}
NS_IMETHODIMP
nsWebShell::CopyImageLocation(void)
{
return DoCommand ( "cmd_copyImageLocation" );
}
NS_IMETHODIMP
nsWebShell::CopyImageContents(void)
{
return DoCommand ( "cmd_copyImageContents" );
}
NS_IMETHODIMP
nsWebShell::Paste(void)
{
return DoCommand ( "cmd_paste" );
}
NS_IMETHODIMP
nsWebShell::SelectAll(void)
{
return DoCommand ( "cmd_selectAll" );
}
//
// SelectNone
//
// Collapses the current selection, insertion point ends up at beginning
// of previous selection.
//
NS_IMETHODIMP
nsWebShell::SelectNone(void)
{
return DoCommand ( "cmd_selectNone" );
}
#ifdef XP_MAC
#pragma mark -
#endif
//*****************************************************************************
// nsWebShell::nsIBaseWindow
//*****************************************************************************
NS_IMETHODIMP nsWebShell::Create()
{
// Remember the current thread (in current and forseeable implementations,
// it'll just be the unique UI thread)
//
// Since this call must be made on the UI thread, we know the Event Queue
// will be associated with the current thread...
//
mThread = PR_GetCurrentThread();
WEB_TRACE(WEB_TRACE_CALLS,
("nsWebShell::Init: this=%p", this));
// HACK....force the uri loader to give us a load cookie for this webshell...then get its
// doc loader and store it...as more of the docshell lands, we'll be able to get rid
// of this hack...
nsresult rv;
nsCOMPtr<nsIURILoader> uriLoader = do_GetService(NS_URI_LOADER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = uriLoader->GetDocumentLoaderForContext(this,
getter_AddRefs(mDocLoader));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIContentViewerContainer> shellAsContainer;
CallQueryInterface(this, NS_STATIC_CAST(nsIContentViewerContainer**, getter_AddRefs(shellAsContainer)));
// Set the webshell as the default IContentViewerContainer for the loader...
mDocLoader->SetContainer(shellAsContainer);
return nsDocShell::Create();
}
NS_IMETHODIMP nsWebShell::Destroy()
{
nsDocShell::Destroy();
SetContainer(nsnull);
return NS_OK;
}
#ifdef DEBUG
unsigned long nsWebShell::gNumberOfWebShells = 0;
#endif
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