libyui-qt  2.43.5
/usr/src/RPM/BUILD/libyui-qt-2.43.5/src/YQSignalBlocker.h
00001 /*
00002   Copyright (C) 2000-2012 Novell, Inc
00003   This library is free software; you can redistribute it and/or modify
00004   it under the terms of the GNU Lesser General Public License as
00005   published by the Free Software Foundation; either version 2.1 of the
00006   License, or (at your option) version 3.0 of the License. This library
00007   is distributed in the hope that it will be useful, but WITHOUT ANY
00008   WARRANTY; without even the implied warranty of MERCHANTABILITY or
00009   FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
00010   License for more details. You should have received a copy of the GNU
00011   Lesser General Public License along with this library; if not, write
00012   to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
00013   Floor, Boston, MA 02110-1301 USA
00014 */
00015 
00016 
00017 /*-/
00018 
00019   File:       YQSignalBlocker.h
00020 
00021   Author:     Stefan Hundhammer <sh@suse.de>
00022 
00023 /-*/
00024 
00025 #ifndef YQSignalBlocker_h
00026 #define YQSignalBlocker_h
00027 
00028 class QObject;
00029 
00030 /**
00031  * Helper class to block Qt signals for QWidgets or QObjects as long as this
00032  * object exists.
00033  *
00034  * This object will restore the old blocked state when it goes out of scope.
00035  **/
00036 class YQSignalBlocker
00037 {
00038 public:
00039 
00040     /**
00041      * Constructor.
00042      *
00043      * Qt signals for 'qobject' will be blocked as long as this object exists.
00044      * Remember that a QWidget is also a QObject.
00045      **/
00046     YQSignalBlocker( QObject * qobject );
00047 
00048     /**
00049      * Destructor.
00050      *
00051      * This will restore the old signal state.
00052      **/
00053     ~YQSignalBlocker();
00054 
00055 
00056 private:
00057 
00058     QObject *   _qobject;
00059     bool        _oldBlockedState;
00060 };
00061 
00062 
00063 #endif // ifndef YQSignalBlocker_h
 All Classes Functions Variables