mirror of
https://github.com/rn10950/RetroZilla.git
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263 lines
9.4 KiB
C++
263 lines
9.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications, Inc.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Travis Bogard <travis@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsDocShell.h"
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#include "nsDSURIContentListener.h"
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#include "nsIChannel.h"
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#include "nsServiceManagerUtils.h"
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#include "nsXPIDLString.h"
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#include "nsDocShellCID.h"
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#include "nsIWebNavigationInfo.h"
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#include "nsIDOMWindowInternal.h"
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#include "nsAutoPtr.h"
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//*****************************************************************************
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//*** nsDSURIContentListener: Object Management
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//*****************************************************************************
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nsDSURIContentListener::nsDSURIContentListener(nsDocShell* aDocShell)
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: mDocShell(aDocShell),
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mParentContentListener(nsnull)
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{
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}
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nsDSURIContentListener::~nsDSURIContentListener()
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{
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}
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nsresult
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nsDSURIContentListener::Init()
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{
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nsresult rv;
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mNavInfo = do_GetService(NS_WEBNAVIGATION_INFO_CONTRACTID, &rv);
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NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Failed to get webnav info");
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return rv;
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}
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//*****************************************************************************
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// nsDSURIContentListener::nsISupports
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//*****************************************************************************
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NS_IMPL_THREADSAFE_ADDREF(nsDSURIContentListener)
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NS_IMPL_THREADSAFE_RELEASE(nsDSURIContentListener)
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NS_INTERFACE_MAP_BEGIN(nsDSURIContentListener)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIURIContentListener)
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NS_INTERFACE_MAP_ENTRY(nsIURIContentListener)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_END
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//*****************************************************************************
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// nsDSURIContentListener::nsIURIContentListener
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//*****************************************************************************
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NS_IMETHODIMP
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nsDSURIContentListener::OnStartURIOpen(nsIURI* aURI, PRBool* aAbortOpen)
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{
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nsCOMPtr<nsIURIContentListener> parentListener;
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GetParentContentListener(getter_AddRefs(parentListener));
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if (parentListener)
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return parentListener->OnStartURIOpen(aURI, aAbortOpen);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDSURIContentListener::DoContent(const char* aContentType,
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PRBool aIsContentPreferred,
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nsIRequest* request,
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nsIStreamListener** aContentHandler,
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PRBool* aAbortProcess)
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{
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nsresult rv;
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NS_ENSURE_ARG_POINTER(aContentHandler);
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NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);
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if(aAbortProcess)
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*aAbortProcess = PR_FALSE;
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// determine if the channel has just been retargeted to us...
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nsLoadFlags loadFlags = 0;
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nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(request);
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if (aOpenedChannel)
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aOpenedChannel->GetLoadFlags(&loadFlags);
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if(loadFlags & nsIChannel::LOAD_RETARGETED_DOCUMENT_URI)
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{
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// XXX: Why does this not stop the content too?
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mDocShell->Stop(nsIWebNavigation::STOP_NETWORK);
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mDocShell->SetLoadType(aIsContentPreferred ? LOAD_LINK : LOAD_NORMAL);
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}
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rv = mDocShell->CreateContentViewer(aContentType, request, aContentHandler);
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if (NS_FAILED(rv)) {
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// it's okay if we don't know how to handle the content
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return NS_OK;
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}
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if (loadFlags & nsIChannel::LOAD_RETARGETED_DOCUMENT_URI) {
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nsCOMPtr<nsIDOMWindowInternal> domWindow = do_GetInterface(NS_STATIC_CAST(nsIDocShell*, mDocShell));
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NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
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domWindow->Focus();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDSURIContentListener::IsPreferred(const char* aContentType,
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char ** aDesiredContentType,
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PRBool* aCanHandle)
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{
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NS_ENSURE_ARG_POINTER(aCanHandle);
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NS_ENSURE_ARG_POINTER(aDesiredContentType);
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// the docshell has no idea if it is the preferred content provider or not.
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// It needs to ask it's parent if it is the preferred content handler or not...
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nsCOMPtr<nsIURIContentListener> parentListener;
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GetParentContentListener(getter_AddRefs(parentListener));
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if (parentListener) {
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return parentListener->IsPreferred(aContentType,
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aDesiredContentType,
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aCanHandle);
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}
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// we used to return false here if we didn't have a parent properly
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// registered at the top of the docshell hierarchy to dictate what
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// content types this docshell should be a preferred handler for. But
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// this really makes it hard for developers using iframe or browser tags
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// because then they need to make sure they implement
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// nsIURIContentListener otherwise all link clicks would get sent to
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// another window because we said we weren't the preferred handler type.
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// I'm going to change the default now...if we can handle the content,
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// and someone didn't EXPLICITLY set a nsIURIContentListener at the top
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// of our docshell chain, then we'll now always attempt to process the
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// content ourselves...
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return CanHandleContent(aContentType,
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PR_TRUE,
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aDesiredContentType,
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aCanHandle);
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}
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NS_IMETHODIMP
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nsDSURIContentListener::CanHandleContent(const char* aContentType,
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PRBool aIsContentPreferred,
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char ** aDesiredContentType,
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PRBool* aCanHandleContent)
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{
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NS_PRECONDITION(aCanHandleContent, "Null out param?");
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NS_ENSURE_ARG_POINTER(aDesiredContentType);
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*aCanHandleContent = PR_FALSE;
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*aDesiredContentType = nsnull;
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nsresult rv = NS_OK;
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if (aContentType) {
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PRUint32 canHandle = nsIWebNavigationInfo::UNSUPPORTED;
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rv = mNavInfo->IsTypeSupported(nsDependentCString(aContentType),
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mDocShell,
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&canHandle);
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*aCanHandleContent = (canHandle != nsIWebNavigationInfo::UNSUPPORTED);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsDSURIContentListener::GetLoadCookie(nsISupports ** aLoadCookie)
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{
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NS_IF_ADDREF(*aLoadCookie = nsDocShell::GetAsSupports(mDocShell));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDSURIContentListener::SetLoadCookie(nsISupports * aLoadCookie)
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{
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#ifdef DEBUG
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nsRefPtr<nsDocLoader> cookieAsDocLoader =
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nsDocLoader::GetAsDocLoader(aLoadCookie);
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NS_ASSERTION(cookieAsDocLoader && cookieAsDocLoader == mDocShell,
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"Invalid load cookie being set!");
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#endif
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDSURIContentListener::GetParentContentListener(nsIURIContentListener**
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aParentListener)
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{
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if (mWeakParentContentListener)
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{
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nsCOMPtr<nsIURIContentListener> tempListener =
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do_QueryReferent(mWeakParentContentListener);
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*aParentListener = tempListener;
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NS_IF_ADDREF(*aParentListener);
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}
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else {
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*aParentListener = mParentContentListener;
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NS_IF_ADDREF(*aParentListener);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDSURIContentListener::SetParentContentListener(nsIURIContentListener*
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aParentListener)
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{
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if (aParentListener)
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{
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// Store the parent listener as a weak ref. Parents not supporting
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// nsISupportsWeakReference assert but may still be used.
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mParentContentListener = nsnull;
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mWeakParentContentListener = do_GetWeakReference(aParentListener);
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if (!mWeakParentContentListener)
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{
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mParentContentListener = aParentListener;
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}
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}
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else
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{
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mWeakParentContentListener = nsnull;
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mParentContentListener = nsnull;
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}
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return NS_OK;
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}
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