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
|
// qtractorCommand.h
//
/****************************************************************************
Copyright (C) 2005-2022, rncbc aka Rui Nuno Capela. All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*****************************************************************************/
#ifndef __qtractorCommand_h
#define __qtractorCommand_h
#include "qtractorList.h"
#include <QObject>
#include <QString>
// Forward declarations.
class QAction;
//----------------------------------------------------------------------
// class qtractorCommand - declaration.
//
class qtractorCommand : public qtractorList<qtractorCommand>::Link
{
public:
// Constructor.
qtractorCommand(const QString& sName)
: m_sName(sName), m_flags(Refresh) {}
// Virtual destructor.
virtual ~qtractorCommand() {}
// Descriptive command name accessors.
void setName(const QString& sName) { m_sName = sName; }
const QString& name() const { return m_sName; }
// Command flags.
enum Flag {
None = 0, AutoDelete = 1, Refresh = 2,
Clear = 4, Select = 8, Reset = 16,
ClearSelect = Clear | Select,
ClearSelectReset = ClearSelect | Reset
};
// Command flags accessor.
unsigned int flags() const { return m_flags; }
// Auto-removal/deletion flag accessors.
void setAutoDelete(bool bAutoDelete)
{ setFlags(AutoDelete, bAutoDelete); }
bool isAutoDelete() const
{ return isFlags(AutoDelete); }
// Contents-refresh accessors.
void setRefresh(bool bRefresh)
{ setFlags(Refresh, bRefresh); }
bool isRefresh() const
{ return isFlags(Refresh); }
// Selection clear/reset accessors.
void setClearSelect(bool bClearSelect)
{ setFlags(ClearSelect, bClearSelect); }
bool isClearSelect() const
{ return isFlags(ClearSelect); }
void setClearSelectReset(bool bClearSelectReset)
{ setFlags(ClearSelectReset, bClearSelectReset); }
bool isClearSelectReset() const
{ return isFlags(ClearSelectReset); }
// Cannonical command methods.
virtual bool redo() = 0;
virtual bool undo() = 0;
protected:
// Discrete flag accessors.
void setFlags(unsigned int flags, bool bOn = true)
{ if (bOn) m_flags |= flags; else m_flags &= ~flags; }
bool isFlags(unsigned int flags) const
{ return ((m_flags & flags) == flags); }
private:
// Instance variables.
QString m_sName;
unsigned int m_flags;
};
//----------------------------------------------------------------------
// class qtractorCommandList - declaration.
//
class qtractorCommandList : public QObject
{
Q_OBJECT
public:
// Constructor.
qtractorCommandList();
// Destructor.
virtual ~qtractorCommandList();
// Command stack cleaner.
void clear();
// Command cursor accessors.
qtractorCommand *lastCommand() const;
qtractorCommand *nextCommand() const;
// Remove last command from command chain.
void removeLastCommand();
// Special backout method.
void backout(qtractorCommand *pCommand);
// Cannonical command methods.
bool push(qtractorCommand *pCommand);
bool exec(qtractorCommand *pCommand);
bool undo();
bool redo();
// Command action update helper.
void updateAction(QAction *pAction, qtractorCommand *pCommand) const;
signals:
// Command update notification.
void updateNotifySignal(unsigned int);
private:
// Instance variables.
qtractorList<qtractorCommand> m_commands;
qtractorCommand *m_pLastCommand;
};
#endif // __qtractorCommand_h
// end of qtractorCommand.h
|