tbx  0.7.3
deferdelete.h
1 /*
2  * tbx RISC OS toolbox library
3  *
4  * Copyright (C) 2010 Alan Buckley All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 /*
25  * deferdelete.h
26  *
27  * Created on: 9 Feb 2011
28  * Author: alanb
29  */
30 
31 #ifndef TBX_DEFERDELETE_H_
32 #define TBX_DEFERDELETE_H_
33 
34 #include "application.h"
35 
36 namespace tbx
37 {
38 
40 
44 template<class T> class DeferDeleteCommand : public Command
45 {
46  T *_to_delete;
47  DeferDeleteCommand(T *obj) : _to_delete(obj) {}
48 public:
49  static void Create(T *obj)
50  {
51  DeferDeleteCommand *ddc = new DeferDeleteCommand(obj);
52  tbx::app()->add_idle_command(ddc);
53  }
54 
58  virtual void execute()
59  {
61  delete _to_delete;
62  delete this;
63  }
64 };
65 
67 
74 template<class T> void defer_delete(T * obj)
75 {
76  DeferDeleteCommand<T>::Create(obj);
77 }
78 
79 }
80 
81 
82 
83 #endif /* DEFERDELETE_H_ */
void add_idle_command(Command *command)
Add a command to be run when no events are being received from the desktop.
Definition: application.cc:224
void remove_idle_command(Command *command)
Remove a command to be run when no events are being received from the desktop.
Definition: application.cc:235
void defer_delete(T *obj)
Function to defer the deletion of an object until the next idle (null) wimp poll. ...
Definition: deferdelete.h:74
Application * app()
Get the current application instance.
Definition: application.h:206