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
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVESTATE_H
#define QDECLARATIVESTATE_H
#include <qdeclarative.h>
#include <qdeclarativeproperty.h>
#include <QtCore/qobject.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QDeclarativeActionEvent;
class QDeclarativeAbstractBinding;
class QDeclarativeBinding;
class QDeclarativeExpression;
class Q_DECLARATIVE_EXPORT QDeclarativeAction
{
public:
QDeclarativeAction();
QDeclarativeAction(QObject *, const QString &, const QVariant &);
QDeclarativeAction(QObject *, const QString &,
QDeclarativeContext *, const QVariant &);
bool restore:1;
bool actionDone:1;
bool reverseEvent:1;
bool deletableToBinding:1;
QDeclarativeProperty property;
QVariant fromValue;
QVariant toValue;
QDeclarativeAbstractBinding *fromBinding;
QDeclarativeAbstractBinding *toBinding;
QDeclarativeActionEvent *event;
//strictly for matching
QObject *specifiedObject;
QString specifiedProperty;
void deleteFromBinding();
};
class QDeclarativeActionEvent
{
public:
virtual ~QDeclarativeActionEvent();
virtual QString typeName() const;
enum Reason { ActualChange, FastForward };
virtual void execute(Reason reason = ActualChange);
virtual bool isReversable();
virtual void reverse(Reason reason = ActualChange);
virtual void saveOriginals() {}
virtual bool needsCopy() { return false; }
virtual void copyOriginals(QDeclarativeActionEvent *) {}
virtual bool isRewindable() { return isReversable(); }
virtual void rewind() {}
virtual void saveCurrentValues() {}
virtual void saveTargetValues() {}
virtual bool changesBindings();
virtual void clearBindings();
virtual bool override(QDeclarativeActionEvent*other);
};
//### rename to QDeclarativeStateChange?
class QDeclarativeStateGroup;
class Q_DECLARATIVE_EXPORT QDeclarativeStateOperation : public QObject
{
Q_OBJECT
public:
QDeclarativeStateOperation(QObject *parent = 0)
: QObject(parent) {}
typedef QList<QDeclarativeAction> ActionList;
virtual ActionList actions();
protected:
QDeclarativeStateOperation(QObjectPrivate &dd, QObject *parent = 0);
};
typedef QDeclarativeStateOperation::ActionList QDeclarativeStateActions;
class QDeclarativeTransition;
class QDeclarativeStatePrivate;
class Q_DECLARATIVE_EXPORT QDeclarativeState : public QObject
{
Q_OBJECT
Q_PROPERTY(QString name READ name WRITE setName)
Q_PROPERTY(QDeclarativeBinding *when READ when WRITE setWhen)
Q_PROPERTY(QString extend READ extends WRITE setExtends)
Q_PROPERTY(QDeclarativeListProperty<QDeclarativeStateOperation> changes READ changes)
Q_CLASSINFO("DefaultProperty", "changes")
Q_CLASSINFO("DeferredPropertyNames", "changes")
public:
QDeclarativeState(QObject *parent=0);
virtual ~QDeclarativeState();
QString name() const;
void setName(const QString &);
/*'when' is a QDeclarativeBinding to limit state changes oscillation
due to the unpredictable order of evaluation of bound expressions*/
bool isWhenKnown() const;
QDeclarativeBinding *when() const;
void setWhen(QDeclarativeBinding *);
QString extends() const;
void setExtends(const QString &);
QDeclarativeListProperty<QDeclarativeStateOperation> changes();
int operationCount() const;
QDeclarativeStateOperation *operationAt(int) const;
QDeclarativeState &operator<<(QDeclarativeStateOperation *);
void apply(QDeclarativeStateGroup *, QDeclarativeTransition *, QDeclarativeState *revert);
void cancel();
QDeclarativeStateGroup *stateGroup() const;
void setStateGroup(QDeclarativeStateGroup *);
Q_SIGNALS:
void completed();
private:
Q_DECLARE_PRIVATE(QDeclarativeState)
Q_DISABLE_COPY(QDeclarativeState)
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QDeclarativeStateOperation)
QML_DECLARE_TYPE(QDeclarativeState)
QT_END_HEADER
#endif // QDECLARATIVESTATE_H
|
