libyui  3.4.2
YWidget_OptimizeChanges.h
1 /*
2  Copyright (C) 2000-2012 Novell, Inc
3  This library is free software; you can redistribute it and/or modify
4  it under the terms of the GNU Lesser General Public License as
5  published by the Free Software Foundation; either version 2.1 of the
6  License, or (at your option) version 3.0 of the License. This library
7  is distributed in the hope that it will be useful, but WITHOUT ANY
8  WARRANTY; without even the implied warranty of MERCHANTABILITY or
9  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
10  License for more details. You should have received a copy of the GNU
11  Lesser General Public License along with this library; if not, write
12  to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
13  Floor, Boston, MA 02110-1301 USA
14 */
15 
16 
17 /*-/
18 
19  File: YWidget_OptimizeChanges.h
20 
21  Author: Michael Andres <ma@suse.de>
22 
23 /-*/
24 
25 #ifndef YWidget_OptimizeChanges_h
26 #define YWidget_OptimizeChanges_h
27 
28 
29 // Moved out of YWidget.h because it's really utterly out of place there.
30 
31 #ifndef YWidget_h
32 #error Do not include this file from anywhere outside YWidget.h!
33 #endif
34 
35 // class YWidget
36 // {
37 
38 public:
39  /**
40  * Helper class that calls startMultipleChanges() in its constructor
41  * and cares about the necessary call to doneMultipleChanges() when it goes
42  * out of scope.
43  **/
45  {
46  public:
47  OptimizeChanges( YWidget & w ) : yw(w) { yw.startMultipleChanges(); }
48  ~OptimizeChanges() { yw.doneMultipleChanges(); }
49  private:
50  OptimizeChanges( const OptimizeChanges & ); // no copy
51  void operator=( const OptimizeChanges & ); // no assign
52  YWidget & yw;
53  };
54 
55 // }; // class YWidget
56 
57 
58 #endif // YWidget_OptimizeChanges_h
virtual void startMultipleChanges()
In some UIs updating the screen content is an expensive operation.
Definition: YWidget.h:640
Helper class that calls startMultipleChanges() in its constructor and cares about the necessary call ...
Abstract base class of all UI widgets.
Definition: YWidget.h:54