1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 : *
3 : * ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is the Mozilla browser.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * Netscape Communications Corporation.
20 : * Portions created by the Initial Developer are Copyright (C) 1999
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : * Stuart Parmenter <pavlov@netscape.com>
25 : * Mike Pinkerton <pinkerton@netscape.com>
26 : *
27 : * Alternatively, the contents of this file may be used under the terms of
28 : * either the GNU General Public License Version 2 or later (the "GPL"), or
29 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
30 : * in which case the provisions of the GPL or the LGPL are applicable instead
31 : * of those above. If you wish to allow use of your version of this file only
32 : * under the terms of either the GPL or the LGPL, and not to allow others to
33 : * use your version of this file under the terms of the MPL, indicate your
34 : * decision by deleting the provisions above and replace them with the notice
35 : * and other provisions required by the GPL or the LGPL. If you do not delete
36 : * the provisions above, a recipient may use your version of this file under
37 : * the terms of any one of the MPL, the GPL or the LGPL.
38 : *
39 : * ***** END LICENSE BLOCK ***** */
40 :
41 : #include "WidgetUtils.h"
42 :
43 : #include "nsIBaseWindow.h"
44 : #include "nsIDocShellTreeItem.h"
45 : #include "nsIDocShell.h"
46 : #include "nsIInterfaceRequestorUtils.h"
47 :
48 : namespace mozilla {
49 : namespace widget {
50 :
51 : //static
52 : already_AddRefed<nsIWidget>
53 0 : WidgetUtils::DOMWindowToWidget(nsIDOMWindow *aDOMWindow)
54 : {
55 0 : nsCOMPtr<nsIWidget> widget;
56 :
57 0 : nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aDOMWindow);
58 0 : if (window) {
59 0 : nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(window->GetDocShell()));
60 :
61 0 : while (!widget && baseWin) {
62 0 : baseWin->GetParentWidget(getter_AddRefs(widget));
63 0 : if (!widget) {
64 0 : nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(baseWin));
65 0 : if (!docShellAsItem)
66 0 : return nsnull;
67 :
68 0 : nsCOMPtr<nsIDocShellTreeItem> parent;
69 0 : docShellAsItem->GetParent(getter_AddRefs(parent));
70 :
71 0 : window = do_GetInterface(parent);
72 0 : if (!window)
73 0 : return nsnull;
74 :
75 0 : baseWin = do_QueryInterface(window->GetDocShell());
76 : }
77 : }
78 : }
79 :
80 0 : return widget.forget();
81 : }
82 :
83 : } // namespace widget
84 : } // namespace mozilla
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