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nsXULCommandDispatcher.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Original Author: David W. Hyatt (hyatt@netscape.com)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 
00040 /*
00041 
00042    This is the focus manager for XUL documents.
00043 
00044 */
00045 
00046 #ifndef nsXULCommandDispatcher_h__
00047 #define nsXULCommandDispatcher_h__
00048 
00049 #include "nsCOMPtr.h"
00050 #include "nsIDOMXULCommandDispatcher.h"
00051 #include "nsIDOMFocusListener.h"
00052 #include "nsWeakReference.h"
00053 #include "nsIDOMNode.h"
00054 #include "nsString.h"
00055 #include "nsIBoxObject.h"
00056 
00057 class nsIDOMElement;
00058 class nsIFocusController;
00059 
00060 class nsXULCommandDispatcher : public nsIDOMXULCommandDispatcher,
00061                                public nsSupportsWeakReference
00062 {
00063 protected:
00064     nsXULCommandDispatcher(nsIDocument* aDocument);
00065     virtual ~nsXULCommandDispatcher();
00066 
00067     void EnsureFocusController();
00068 
00069 public:
00070 
00071     static NS_IMETHODIMP
00072     Create(nsIDocument* aDocument, nsXULCommandDispatcher** aResult);
00073     void Disconnect()
00074     {
00075       mFocusController = nsnull;
00076       mDocument = nsnull;
00077     }
00078 
00079     // nsISupports
00080     NS_DECL_ISUPPORTS
00081 
00082     // nsIDOMXULCommandDispatcher interface
00083     NS_DECL_NSIDOMXULCOMMANDDISPATCHER
00084 
00085 protected:
00086     nsIFocusController* mFocusController; // Weak. We always die before the focus controller does.
00087     nsIDocument* mDocument; // Weak.
00088 
00089     class Updater {
00090     public:
00091       Updater(nsIBoxObject* aWeakElement,
00092               const nsAString& aEvents,
00093               const nsAString& aTargets)
00094           : mWeakElement(aWeakElement),
00095             mEvents(aEvents),
00096             mTargets(aTargets),
00097             mNext(nsnull)
00098       {}
00099 
00100       nsCOMPtr<nsIBoxObject> mWeakElement;
00101       nsString               mEvents;
00102       nsString               mTargets;
00103       Updater*               mNext;
00104     };
00105 
00106     Updater* mUpdaters;
00107 
00108     PRBool Matches(const nsString& aList, 
00109                    const nsAString& aElement);
00110 };
00111 
00112 #endif // nsXULCommandDispatcher_h__