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
201
202
203
204
205
206
207
208
209
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKSTATE_H
#define QQUICKSTATE_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qqml.h>
#include <qqmlproperty.h>
#include <QtCore/qobject.h>
#include <QtCore/qsharedpointer.h>
#include <private/qtquickglobal_p.h>
#include <private/qqmlabstractbinding_p.h>
QT_BEGIN_NAMESPACE
class QQuickStateActionEvent;
class QQmlBinding;
class QQmlExpression;
class QQuickStateAction
{
public:
QQuickStateAction();
QQuickStateAction(QObject *, const QString &, const QVariant &);
QQuickStateAction(QObject *, const QString &,
QQmlContext *, const QVariant &);
bool restore:1;
bool actionDone:1;
bool reverseEvent:1;
bool deletableToBinding:1;
QQmlProperty property;
QVariant fromValue;
QVariant toValue;
QQmlAbstractBinding::Ptr fromBinding;
QQmlAbstractBinding::Ptr toBinding;
QQuickStateActionEvent *event;
//strictly for matching
QObject *specifiedObject;
QString specifiedProperty;
void deleteFromBinding();
};
class Q_AUTOTEST_EXPORT QQuickStateActionEvent
{
public:
virtual ~QQuickStateActionEvent();
enum EventType { Script, SignalHandler, ParentChange, AnchorChanges };
virtual EventType type() const = 0;
virtual void execute();
virtual bool isReversable();
virtual void reverse();
virtual void saveOriginals() {}
virtual bool needsCopy() { return false; }
virtual void copyOriginals(QQuickStateActionEvent *) {}
virtual bool isRewindable() { return isReversable(); }
virtual void rewind() {}
virtual void saveCurrentValues() {}
virtual void saveTargetValues() {}
virtual bool changesBindings();
virtual void clearBindings();
virtual bool override(QQuickStateActionEvent*other);
};
//### rename to QQuickStateChange?
class QQuickStateGroup;
class QQuickState;
class QQuickStateOperationPrivate;
class Q_QUICK_PRIVATE_EXPORT QQuickStateOperation : public QObject
{
Q_OBJECT
public:
QQuickStateOperation(QObject *parent = 0)
: QObject(parent) {}
typedef QList<QQuickStateAction> ActionList;
virtual ActionList actions();
QQuickState *state() const;
void setState(QQuickState *state);
protected:
QQuickStateOperation(QObjectPrivate &dd, QObject *parent = 0);
private:
Q_DECLARE_PRIVATE(QQuickStateOperation)
Q_DISABLE_COPY(QQuickStateOperation)
};
typedef QQuickStateOperation::ActionList QQuickStateActions;
class QQuickTransition;
class QQuickStatePrivate;
class Q_QUICK_PRIVATE_EXPORT QQuickState : public QObject
{
Q_OBJECT
Q_PROPERTY(QString name READ name WRITE setName)
Q_PROPERTY(QQmlBinding *when READ when WRITE setWhen)
Q_PROPERTY(QString extend READ extends WRITE setExtends)
Q_PROPERTY(QQmlListProperty<QQuickStateOperation> changes READ changes)
Q_CLASSINFO("DefaultProperty", "changes")
Q_CLASSINFO("DeferredPropertyNames", "changes")
public:
QQuickState(QObject *parent=0);
virtual ~QQuickState();
QString name() const;
void setName(const QString &);
bool isNamed() const;
/*'when' is a QQmlBinding to limit state changes oscillation
due to the unpredictable order of evaluation of bound expressions*/
bool isWhenKnown() const;
QQmlBinding *when() const;
void setWhen(QQmlBinding *);
QString extends() const;
void setExtends(const QString &);
QQmlListProperty<QQuickStateOperation> changes();
int operationCount() const;
QQuickStateOperation *operationAt(int) const;
QQuickState &operator<<(QQuickStateOperation *);
void apply(QQuickTransition *, QQuickState *revert);
void cancel();
QQuickStateGroup *stateGroup() const;
void setStateGroup(QQuickStateGroup *);
bool containsPropertyInRevertList(QObject *target, const QString &name) const;
bool changeValueInRevertList(QObject *target, const QString &name, const QVariant &revertValue);
bool changeBindingInRevertList(QObject *target, const QString &name, QQmlAbstractBinding *binding);
bool removeEntryFromRevertList(QObject *target, const QString &name);
void addEntryToRevertList(const QQuickStateAction &action);
void removeAllEntriesFromRevertList(QObject *target);
void addEntriesToRevertList(const QList<QQuickStateAction> &actions);
QVariant valueInRevertList(QObject *target, const QString &name) const;
QQmlAbstractBinding *bindingInRevertList(QObject *target, const QString &name) const;
bool isStateActive() const;
Q_SIGNALS:
void completed();
private:
Q_DECLARE_PRIVATE(QQuickState)
Q_DISABLE_COPY(QQuickState)
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QQuickStateOperation)
QML_DECLARE_TYPE(QQuickState)
#endif // QQUICKSTATE_H
|
