1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* This file is part of the KDE project
Copyright (C) 2000 Werner Trobin <trobin@kde.org>
Copyright (C) 2000 David Faure <faure@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef kocommandhistory_h
#define kocommandhistory_h
#include <tqptrlist.h>
#include <tqstring.h>
#include <tqobject.h>
#include <koffice_export.h>
class KAction;
class KActionCollection;
class TQPopupMenu;
class KCommand;
#include <tqlistbox.h>
class KoListBox : public TQListBox {
Q_OBJECT
TQ_OBJECT
public:
KoListBox( TQWidget *parent = 0, const char *name = 0, WFlags f = 0 );
protected:
virtual void contentsMouseMoveEvent ( TQMouseEvent * );
virtual TQSize sizeHint() const;
signals:
void changeNumberOfSelectedItem( int );
};
/**
* The command history stores a (user) configurable amount of
* Commands. It keeps track of its size and deletes commands
* if it gets too large. The user can set a maximum undo and
* a maximum redo limit (e.g. max. 50 undo / 30 redo commands).
* The KoCommandHistory keeps track of the "borders" and deletes
* commands, if appropriate. It also activates/deactivates the
* undo/redo actions in the menu and changes the text according
* to the name of the command.
*
* @short History of user commands (for undo/redo)
*/
class KOFFICEUI_EXPORT KoCommandHistory : public TQObject {
Q_OBJECT
TQ_OBJECT
public:
/**
* Creates a command history, to store commands.
* This constructor doesn't create actions, so you need to call
* #undo and #redo yourself.
*/
KoCommandHistory();
/**
* Creates a command history, to store commands.
* This also creates an undo and a redo action, in the @p actionCollection,
* using the standard names ("edit_undo" and "edit_redo").
*
* @param actionCollection the collection to put the history in.
* @param withMenus if true, the actions will display a menu when plugged
* into a toolbar.
*/
KoCommandHistory(KActionCollection *actionCollection, bool withMenus = true);
/**
* Destructs the command history object.
*/
virtual ~KoCommandHistory();
/**
* Erases all the undo/redo history.
* Use this when reloading the data, for instance, since this invalidates
* all the commands.
*/
void clear();
/**
* Adds a command to the history. Call this for each @p command you create.
* Unless you set @p execute to false, this will also execute the command.
* This means, most of the application's code will look like:
*
* MyCommand * cmd = new MyCommand(i18n("The Name"), parameters);
* m_historyCommand.addCommand( cmd );
*/
void addCommand(KCommand *command, bool execute=true);
/**
* @return the maximum number of items in the undo history
*/
int undoLimit() const { return m_undoLimit; }
/**
* Sets the maximum number of items in the undo history.
*/
void setUndoLimit(int limit);
/**
* @return the maximum number of items in the redo history
*/
int redoLimit() const { return m_redoLimit; }
/**
* Sets the maximum number of items in the redo history.
*/
void setRedoLimit(int limit);
/**
* Enable or disable the undo and redo actions.
* This isn't usually necessary, but this method can be useful if
* you disable all actions (to go to a "readonly" state), and then
* want to come back to a readwrite mode.
*/
void updateActions();
/**
* @return the current top item on the history stack
*/
KCommand * presentCommand();
public slots:
/**
* Undoes the last action.
* Call this if you don't use the builtin KActions.
*/
virtual void undo();
/**
* Redoes the last undone action.
* Call this if you don't use the builtin KActions.
*/
virtual void redo();
/**
* Remembers when you saved the document.
* Call this right after saving the document. As soon as
* the history reaches the current index again (via some
* undo/redo operations) it will emit @ref documentRestored
* If you implemented undo/redo properly the document is
* the same you saved before.
*/
virtual void documentSaved();
protected slots:
void slotUndoAboutToShow();
void slotUndoActivated( int );
void slotRedoAboutToShow();
void slotRedoActivated( int );
void slotUndoActivated( TQListBoxItem *);
void slotRedoActivated( TQListBoxItem *);
void slotChangeRedoNumberOfSelectedItem( int );
void slotChangeUndoNumberOfSelectedItem( int );
signals:
/**
* Emitted every time a command is executed
* (whether by addCommand, undo or redo).
* You can use this to update the GUI, for instance.
*/
void commandExecuted();
/**
* Emitted every time a command is executed
* (whether by addCommand, undo or redo).
* You can use this to update the GUI, for instance.
* @param command was executed
*/
void commandExecuted(KCommand *cmd);
/**
* Emitted every time we reach the index where you
* saved the document for the last time. See @ref #documentSaved
*/
void documentRestored();
private:
void clipCommands(); // ensures that the limits are kept
TQPtrList<KCommand> m_commands;
KAction *m_undo, *m_redo;
TQPopupMenu *m_undoPopup, *m_redoPopup;
int m_undoLimit, m_redoLimit;
bool m_first; // attention: it's the first command in the list!
protected:
virtual void virtual_hook( int id, void* data );
private:
class KoCommandHistoryPrivate;
KoCommandHistoryPrivate *d;
};
#endif
|
