534 lines
14 KiB
C++
534 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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 Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Johnny Stenback <jst@netscape.com> (original author)
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*
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIFrameLoader.h"
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#include "nsIDOMHTMLIFrameElement.h"
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#include "nsIDOMHTMLFrameElement.h"
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#include "nsIDOMEventListener.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIDOMWindow.h"
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#include "nsIPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIWebNavigation.h"
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#include "nsIChromeEventHandler.h"
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#include "nsIDocShell.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsIDocShellTreeNode.h"
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#include "nsIDocShellTreeOwner.h"
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#include "nsIDocShellLoadInfo.h"
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#include "nsIBaseWindow.h"
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#include "nsIWebShell.h"
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#include "nsIWebProgressListener.h"
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#include "nsIWebProgress.h"
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#include "nsWeakReference.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsICodebasePrincipal.h"
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#include "nsIURI.h"
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#include "nsNetUtil.h"
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class nsFrameLoader : public nsIFrameLoader,
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public nsIDOMEventListener,
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public nsIWebProgressListener,
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public nsSupportsWeakReference
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{
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public:
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nsFrameLoader();
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virtual ~nsFrameLoader();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIFrameLoader
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NS_IMETHOD Init(nsIDOMElement *aOwner);
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NS_IMETHOD LoadURI(nsIURI *aURI);
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NS_IMETHOD GetDocShell(nsIDocShell **aDocShell);
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NS_IMETHOD Destroy();
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// nsIDOMEventListener
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NS_DECL_NSIDOMEVENTLISTENER
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// nsIWebProgressListener
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NS_DECL_NSIWEBPROGRESSLISTENER
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protected:
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nsresult GetPresContext(nsIPresContext **aPresContext);
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nsresult EnsureDocShell();
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nsCOMPtr<nsIDocShell> mDocShell;
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nsCOMPtr<nsIDOMElement> mOwnerElement;
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nsCOMPtr<nsIURI> mURI;
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};
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nsresult
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NS_NewFrameLoader(nsIFrameLoader **aFrameLoader)
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{
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*aFrameLoader = new nsFrameLoader();
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NS_ENSURE_TRUE(*aFrameLoader, NS_ERROR_OUT_OF_MEMORY);
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NS_ADDREF(*aFrameLoader);
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return NS_OK;
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}
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nsFrameLoader::nsFrameLoader()
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{
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NS_INIT_ISUPPORTS();
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}
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nsFrameLoader::~nsFrameLoader()
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{
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nsCOMPtr<nsIBaseWindow> treeOwnerAsWin(do_QueryInterface(mDocShell));
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if (treeOwnerAsWin) {
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treeOwnerAsWin->Destroy();
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}
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}
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// QueryInterface implementation for nsFrameLoader
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NS_INTERFACE_MAP_BEGIN(nsFrameLoader)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_ENTRY(nsIFrameLoader)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsFrameLoader);
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NS_IMPL_RELEASE(nsFrameLoader);
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NS_IMETHODIMP
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nsFrameLoader::Init(nsIDOMElement *aOwner)
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{
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mOwnerElement = aOwner;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFrameLoader::LoadURI(nsIURI *aURI)
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{
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mURI = aURI;
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nsresult rv = EnsureDocShell();
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// Prevent recursion
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// mCreatingViewer=PR_TRUE;
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// Check for security
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nsCOMPtr<nsIScriptSecurityManager> secMan =
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do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
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mDocShell->CreateLoadInfo(getter_AddRefs(loadInfo));
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NS_ENSURE_TRUE(loadInfo, NS_ERROR_FAILURE);
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// Get referring URL
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nsCOMPtr<nsIURI> referrer;
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nsCOMPtr<nsIPrincipal> principal;
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rv = secMan->GetSubjectPrincipal(getter_AddRefs(principal));
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NS_ENSURE_SUCCESS(rv, rv);
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// If we were called from script, get the referring URL from the script
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if (principal) {
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nsCOMPtr<nsICodebasePrincipal> codebase(do_QueryInterface(principal));
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if (codebase) {
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rv = codebase->GetURI(getter_AddRefs(referrer));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// Pass the script principal to the docshell
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loadInfo->SetOwner(principal);
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}
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if (!referrer) {
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// We're not being called form script, tell the docshell
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// to inherit an owner from the current document.
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loadInfo->SetInheritOwner(PR_TRUE);
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nsCOMPtr<nsIDOMDocument> dom_doc;
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mOwnerElement->GetOwnerDocument(getter_AddRefs(dom_doc));
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nsCOMPtr<nsIDocument> doc(do_QueryInterface(dom_doc));
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if (doc) {
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doc->GetBaseURL(*getter_AddRefs(referrer));
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}
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}
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loadInfo->SetReferrer(referrer);
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// Check if we are allowed to load absURL
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rv = secMan->CheckLoadURI(referrer, mURI,
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nsIScriptSecurityManager::STANDARD);
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if (NS_FAILED(rv)) {
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return rv; // We're not
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}
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nsCOMPtr<nsIWebProgress> webProgress(do_GetInterface(mDocShell));
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if (webProgress) {
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webProgress->AddProgressListener(this);
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}
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rv = mDocShell->LoadURI(mURI, loadInfo, nsIWebNavigation::LOAD_FLAGS_NONE);
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NS_ASSERTION(NS_SUCCEEDED(rv), "failed to load URL");
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return rv;
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}
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NS_IMETHODIMP
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nsFrameLoader::GetDocShell(nsIDocShell **aDocShell)
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{
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EnsureDocShell();
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*aDocShell = mDocShell;
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NS_IF_ADDREF(*aDocShell);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFrameLoader::Destroy()
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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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nsFrameLoader::HandleEvent(nsIDOMEvent *aEvent)
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{
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return NS_OK;
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}
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nsresult
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nsFrameLoader::GetPresContext(nsIPresContext **aPresContext)
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{
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*aPresContext = nsnull;
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nsCOMPtr<nsIDOMDocument> dom_doc;
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mOwnerElement->GetOwnerDocument(getter_AddRefs(dom_doc));
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nsCOMPtr<nsIDocument> doc(do_QueryInterface(dom_doc));
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while (doc) {
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nsCOMPtr<nsIPresShell> presShell;
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doc->GetShellAt(0, getter_AddRefs(presShell));
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if (presShell) {
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presShell->GetPresContext(aPresContext);
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return NS_OK;
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}
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nsCOMPtr<nsIDocument> parent;
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doc->GetParentDocument(getter_AddRefs(parent));
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doc = parent;
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}
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return NS_OK;
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}
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nsresult
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nsFrameLoader::EnsureDocShell()
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{
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if (mDocShell) {
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return NS_OK;
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}
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#if 0
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// Bug 8065: Don't exceed some maximum depth in content frames
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// (MAX_DEPTH_CONTENT_FRAMES)
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PRInt32 depth = 0;
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nsCOMPtr<nsISupports> parentAsSupports;
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aPresContext->GetContainer(getter_AddRefs(parentAsSupports));
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if (parentAsSupports) {
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nsCOMPtr<nsIDocShellTreeItem> parentAsItem =
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do_QueryInterface(parentAsSupports);
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while (parentAsItem) {
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++depth;
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if (MAX_DEPTH_CONTENT_FRAMES < depth)
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return NS_ERROR_UNEXPECTED; // Too deep, give up! (silently?)
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// Only count depth on content, not chrome.
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// If we wanted to limit total depth, skip the following check:
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PRInt32 parentType;
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parentAsItem->GetItemType(&parentType);
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if (nsIDocShellTreeItem::typeContent == parentType) {
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nsIDocShellTreeItem* temp = parentAsItem;
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temp->GetParent(getter_AddRefs(parentAsItem));
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} else {
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break; // we have exited content, stop counting, depth is OK!
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}
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}
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}
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#endif
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mDocShell = do_CreateInstance("@mozilla.org/webshell;1");
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NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);
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#if 0
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// notify the pres shell that a docshell has been created
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nsCOMPtr<nsIPresShell> presShell;
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aPresContext->GetShell(getter_AddRefs(presShell));
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if (presShell) {
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nsCOMPtr<nsISupports> subShellAsSupports(do_QueryInterface(mDocShell));
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NS_ENSURE_TRUE(subShellAsSupports, NS_ERROR_FAILURE);
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presShell->SetSubShellFor(mContent, subShellAsSupports);
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// We need to be able to get back to the presShell to unset the
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// subshell at destruction
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mPresShellWeak = getter_AddRefs(NS_GetWeakReference(presShell));
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}
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#endif
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nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(mDocShell));
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NS_ENSURE_TRUE(docShellAsItem, NS_ERROR_FAILURE);
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nsAutoString frameName;
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mOwnerElement->GetAttribute(NS_LITERAL_STRING("name"), frameName);
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if (!frameName.IsEmpty()) {
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docShellAsItem->SetName(frameName.get());
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}
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// If our container is a web-shell, inform it that it has a new
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// child. If it's not a web-shell then some things will not operate
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// properly.
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nsCOMPtr<nsIPresContext> presContext;
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GetPresContext(getter_AddRefs(presContext));
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// what if !presContext ?
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nsCOMPtr<nsISupports> container;
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presContext->GetContainer(getter_AddRefs(container));
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if (container) {
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nsCOMPtr<nsIDocShellTreeNode> parentAsNode(do_QueryInterface(container));
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if (parentAsNode) {
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nsCOMPtr<nsIDocShellTreeItem> parentAsItem =
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do_QueryInterface(parentAsNode);
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PRInt32 parentType;
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parentAsItem->GetItemType(&parentType);
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nsAutoString value, valuePiece;
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PRBool isContent;
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isContent = PR_FALSE;
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mOwnerElement->GetAttribute(NS_LITERAL_STRING("type"), value);
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if (!value.IsEmpty()) {
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// we accept "content" and "content-xxx" values.
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// at time of writing, we expect "xxx" to be "primary", but
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// someday it might be an integer expressing priority
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// string iterators!
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value.Left(valuePiece, 7);
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if (valuePiece.EqualsIgnoreCase("content") &&
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(value.Length() == 7 ||
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value.Mid(valuePiece, 7, 1) == 1 &&
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valuePiece.EqualsWithConversion("-"))) {
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isContent = PR_TRUE;
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}
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}
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if (isContent) {
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// The web shell's type is content.
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docShellAsItem->SetItemType(nsIDocShellTreeItem::typeContent);
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} else {
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// Inherit our type from our parent webshell. If it is
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// chrome, we'll be chrome. If it is content, we'll be
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// content.
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docShellAsItem->SetItemType(parentType);
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}
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parentAsNode->AddChild(docShellAsItem);
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if (isContent) {
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nsCOMPtr<nsIDocShellTreeOwner> parentTreeOwner;
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parentAsItem->GetTreeOwner(getter_AddRefs(parentTreeOwner));
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if(parentTreeOwner) {
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PRBool is_primary = value.EqualsIgnoreCase("content-primary");
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parentTreeOwner->ContentShellAdded(docShellAsItem, is_primary,
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value.get());
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}
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}
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// connect the container...
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nsCOMPtr<nsIWebShell> webShell(do_QueryInterface(mDocShell));
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nsCOMPtr<nsIWebShellContainer> outerContainer =
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do_QueryInterface(container);
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if (outerContainer) {
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webShell->SetContainer(outerContainer);
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}
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// Make sure all shells have links back to the content element
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// in the nearest enclosing chrome shell.
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nsCOMPtr<nsIChromeEventHandler> chromeEventHandler;
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if (parentType == nsIDocShellTreeItem::typeChrome) {
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// Our parent shell is a chrome shell. It is therefore our nearest
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// enclosing chrome shell.
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chromeEventHandler = do_QueryInterface(mOwnerElement);
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NS_WARN_IF_FALSE(chromeEventHandler,
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"This mContent should implement this.");
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} else {
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nsCOMPtr<nsIDocShell> parentShell(do_QueryInterface(parentAsNode));
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// Our parent shell is a content shell. Get the chrome info from
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// it and use that for our shell as well.
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parentShell->GetChromeEventHandler(getter_AddRefs(chromeEventHandler));
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}
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// Should this be in the layout code?
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mDocShell->SetChromeEventHandler(chromeEventHandler);
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}
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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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nsFrameLoader::OnStateChange(nsIWebProgress *aWebProgress,
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nsIRequest *aRequest,
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PRInt32 aStateFlags, PRUint32 aStatus)
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{
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if (!((~aStateFlags) & (nsIWebProgressListener::STATE_IS_DOCUMENT |
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nsIWebProgressListener::STATE_TRANSFERRING))) {
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nsCOMPtr<nsIDOMWindow> win(do_GetInterface(mDocShell));
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nsCOMPtr<nsIDOMEventTarget> eventTarget(do_QueryInterface(win));
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if (eventTarget) {
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eventTarget->AddEventListener(NS_LITERAL_STRING("load"), this,
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PR_FALSE);
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}
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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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nsFrameLoader::OnProgressChange(nsIWebProgress *aWebProgress,
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nsIRequest *aRequest,
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PRInt32 aCurSelfProgress,
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PRInt32 aMaxSelfProgress,
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PRInt32 aCurTotalProgress,
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PRInt32 aMaxTotalProgress)
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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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nsFrameLoader::OnLocationChange(nsIWebProgress *aWebProgress,
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nsIRequest *aRequest, nsIURI *location)
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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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nsFrameLoader::OnStatusChange(nsIWebProgress *aWebProgress,
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nsIRequest *aRequest, nsresult aStatus,
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const PRUnichar *aMessage)
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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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nsFrameLoader::OnSecurityChange(nsIWebProgress *aWebProgress,
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nsIRequest *aRequest, PRInt32 state)
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{
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return NS_OK;
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}
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