gecko/widget/shared/WidgetUtils.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 the Mozilla browser.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@netscape.com>
* Mike Pinkerton <pinkerton@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 "WidgetUtils.h"
#include "nsIBaseWindow.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
namespace mozilla {
namespace widget {
//static
already_AddRefed<nsIWidget>
WidgetUtils::DOMWindowToWidget(nsIDOMWindow *aDOMWindow)
{
nsCOMPtr<nsIWidget> widget;
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aDOMWindow);
if (window) {
nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(window->GetDocShell()));
while (!widget && baseWin) {
baseWin->GetParentWidget(getter_AddRefs(widget));
if (!widget) {
nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(baseWin));
if (!docShellAsItem)
return nsnull;
nsCOMPtr<nsIDocShellTreeItem> parent;
docShellAsItem->GetParent(getter_AddRefs(parent));
window = do_GetInterface(parent);
if (!window)
return nsnull;
baseWin = do_QueryInterface(window->GetDocShell());
}
}
}
return widget.forget();
}
} // namespace widget
} // namespace mozilla