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nsTreeSelection.h
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00001 /* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is the Mozilla browser.
00017  *
00018  * The Initial Developer of the Original Code is
00019  * Netscape Communications, Inc.
00020  * Portions created by the Initial Developer are Copyright (C) 1999
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *   Dave Hyatt <hyatt@mozilla.org> (Original Author)
00025  *   Brian Ryner <bryner@brianryner.com>
00026  *   Jan Varga <varga@ku.sk>
00027  *
00028  * Alternatively, the contents of this file may be used under the terms of
00029  * either of the GNU General Public License Version 2 or later (the "GPL"),
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00039  *
00040  * ***** END LICENSE BLOCK ***** */
00041 
00042 #ifndef nsTreeSelection_h__
00043 #define nsTreeSelection_h__
00044 
00045 #include "nsITreeSelection.h"
00046 #include "nsITimer.h"
00047 
00048 class nsITreeBoxObject;
00049 struct nsTreeRange;
00050 
00051 class nsTreeSelection : public nsITreeSelection
00052 {
00053 public:
00054   nsTreeSelection(nsITreeBoxObject* aTree);
00055   ~nsTreeSelection();
00056    
00057   NS_DECL_ISUPPORTS
00058   NS_DECL_NSITREESELECTION
00059 
00060   friend struct nsTreeRange;
00061 
00062 protected:
00063   nsresult FireOnSelectHandler();
00064   static void SelectCallback(nsITimer *aTimer, void *aClosure);
00065 
00066 protected:
00067   // Members
00068   nsITreeBoxObject* mTree; // [Weak]. The tree will hold on to us through the view and let go when it dies.
00069 
00070   PRBool mSuppressed; // Whether or not we should be firing onselect events.
00071   PRInt32 mCurrentIndex; // The item to draw the rect around. The last one clicked, etc.
00072   PRInt32 mShiftSelectPivot; // Used when multiple SHIFT+selects are performed to pivot on.
00073 
00074   nsTreeRange* mFirstRange; // Our list of ranges.
00075 
00076   nsCOMPtr<nsITimer> mSelectTimer;
00077 };
00078 
00079 nsresult
00080 NS_NewTreeSelection(nsITreeBoxObject* aTree, nsITreeSelection** aResult);
00081 
00082 #endif