gecko-dev/dom/base/nsDOMWindowList.cpp

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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.org 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@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
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* ***** END LICENSE BLOCK ***** */
// Local Includes
#include "nsDOMWindowList.h"
// Helper classes
#include "nsCOMPtr.h"
// Interfaces needed
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDOMWindow.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShellTreeNode.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIScriptGlobalObject.h"
#include "nsIWebNavigation.h"
nsDOMWindowList::nsDOMWindowList(nsIDocShell *aDocShell)
{
SetDocShell(aDocShell);
}
nsDOMWindowList::~nsDOMWindowList()
{
}
NS_IMPL_ADDREF(nsDOMWindowList)
NS_IMPL_RELEASE(nsDOMWindowList)
NS_INTERFACE_MAP_BEGIN(nsDOMWindowList)
NS_INTERFACE_MAP_ENTRY(nsIDOMWindowCollection)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMETHODIMP
nsDOMWindowList::SetDocShell(nsIDocShell* aDocShell)
{
nsCOMPtr<nsIDocShellTreeNode> docShellAsNode(do_QueryInterface(aDocShell));
mDocShellNode = docShellAsNode; // Weak Reference
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowList::GetLength(PRUint32* aLength)
{
nsresult rv = NS_OK;
*aLength = 0;
nsCOMPtr<nsIWebNavigation> shellAsNav(do_QueryInterface(mDocShellNode));
if (shellAsNav) {
nsCOMPtr<nsIDOMDocument> domdoc;
shellAsNav->GetDocument(getter_AddRefs(domdoc));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domdoc));
if (doc) {
doc->FlushPendingNotifications(Flush_ContentAndNotify);
}
}
// The above flush might cause mDocShellNode to be cleared, so we
// need to check that it's still non-null here.
if (mDocShellNode) {
PRInt32 length;
rv = mDocShellNode->GetChildCount(&length);
*aLength = length;
}
return rv;
}
NS_IMETHODIMP
nsDOMWindowList::Item(PRUint32 aIndex, nsIDOMWindow** aReturn)
{
nsCOMPtr<nsIDocShellTreeItem> item;
*aReturn = nsnull;
nsCOMPtr<nsIWebNavigation> shellAsNav = do_QueryInterface(mDocShellNode);
if (shellAsNav) {
nsCOMPtr<nsIDOMDocument> domdoc;
shellAsNav->GetDocument(getter_AddRefs(domdoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domdoc);
if (doc) {
doc->FlushPendingNotifications(Flush_ContentAndNotify);
}
}
// The above flush might cause mDocShellNode to be cleared, so we
// need to check that it's still non-null here.
if (mDocShellNode) {
mDocShellNode->GetChildAt(aIndex, getter_AddRefs(item));
nsCOMPtr<nsIScriptGlobalObject> globalObject(do_GetInterface(item));
NS_ASSERTION(!item || (item && globalObject),
"Couldn't get to the globalObject");
if (globalObject) {
CallQueryInterface(globalObject, aReturn);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowList::NamedItem(const nsAString& aName, nsIDOMWindow** aReturn)
{
nsCOMPtr<nsIDocShellTreeItem> item;
*aReturn = nsnull;
nsCOMPtr<nsIWebNavigation> shellAsNav(do_QueryInterface(mDocShellNode));
if (shellAsNav) {
nsCOMPtr<nsIDOMDocument> domdoc;
shellAsNav->GetDocument(getter_AddRefs(domdoc));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domdoc));
if (doc) {
doc->FlushPendingNotifications(Flush_ContentAndNotify);
}
}
// The above flush might cause mDocShellNode to be cleared, so we
// need to check that it's still non-null here.
if (mDocShellNode) {
mDocShellNode->FindChildWithName(PromiseFlatString(aName).get(),
PR_FALSE, PR_FALSE, nsnull,
nsnull, getter_AddRefs(item));
nsCOMPtr<nsIScriptGlobalObject> globalObject(do_GetInterface(item));
if (globalObject) {
CallQueryInterface(globalObject.get(), aReturn);
}
}
return NS_OK;
}