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qqmlbinding_p.h

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtQml module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
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34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#ifndef QQMLBINDING_P_H-
41#define QQMLBINDING_P_H-
42-
43//-
44// W A R N I N G-
45// --------------
46//-
47// This file is not part of the Qt API. It exists purely as an-
48// implementation detail. This header file may change from version to-
49// version without notice, or even be removed.-
50//-
51// We mean it.-
52//-
53-
54#include "qqml.h"-
55#include "qqmlpropertyvaluesource.h"-
56#include "qqmlexpression.h"-
57#include "qqmlproperty.h"-
58#include "qqmlscriptstring.h"-
59#include "qqmlproperty_p.h"-
60-
61#include <QtCore/QObject>-
62#include <QtCore/QMetaProperty>-
63-
64#include <private/qqmlabstractbinding_p.h>-
65#include <private/qqmljavascriptexpression_p.h>-
66-
67QT_BEGIN_NAMESPACE-
68-
69class QQmlContext;-
70class Q_QML_PRIVATE_EXPORT QQmlBinding : public QQmlJavaScriptExpression,-
71 public QQmlAbstractBinding-
72{-
73 friend class QQmlAbstractBinding;-
74public:-
75 typedef QExplicitlySharedDataPointer<QQmlBinding> Ptr;-
76-
77 static QQmlBinding *create(const QQmlPropertyData *, const QQmlScriptString &, QObject *, QQmlContext *);-
78 static QQmlBinding *create(const QQmlPropertyData *, const QString &, QObject *, QQmlContextData *,-
79 const QString &url = QString(), quint16 lineNumber = 0);-
80 static QQmlBinding *create(const QQmlPropertyData *property, QV4::Function *function,-
81 QObject *obj, QQmlContextData *ctxt, QV4::ExecutionContext *scope);-
82 static QQmlBinding *createTranslationBinding(const QQmlRefPointer<QV4::CompiledData::CompilationUnit> &unit, const QV4::CompiledData::Binding *binding,-
83 QObject *obj, QQmlContextData *ctxt);-
84 ~QQmlBinding() override;-
85-
86 void setTarget(const QQmlProperty &);-
87 bool setTarget(QObject *, const QQmlPropertyData &, const QQmlPropertyData *valueType);-
88-
89 void setNotifyOnValueChanged(bool);-
90-
91 void refresh() override;-
92-
93 void setEnabled(bool, QQmlPropertyData::WriteFlags flags = QQmlPropertyData::DontRemoveBinding) override;-
94 QString expression() const override;-
95 void update(QQmlPropertyData::WriteFlags flags = QQmlPropertyData::DontRemoveBinding);-
96-
97 typedef int Identifier;-
98 enum {-
99 Invalid = -1-
100 };-
101-
102 QVariant evaluate();-
103-
104 QString expressionIdentifier() const override;-
105 void expressionChanged() override;-
106-
107 QQmlSourceLocation sourceLocation() const override;-
108 void setSourceLocation(const QQmlSourceLocation &location);-
109 void setBoundFunction(QV4::BoundFunction *boundFunction) {-
110 m_boundFunction.set(boundFunction->engine(), *boundFunction);-
111 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_qqmlecmascript
4
112-
113 /**-
114 * This method returns a snapshot of the currently tracked dependencies of-
115 * this binding. The dependencies can change upon reevaluation. This method is-
116 * used in GammaRay to visualize binding hierarchies.-
117 *-
118 * Call this method from the UI thread.-
119 */-
120 QVector<QQmlProperty> dependencies() const;-
121 virtual bool hasDependencies() const;-
122-
123protected:-
124 virtual void doUpdate(const DeleteWatcher &watcher,-
125 QQmlPropertyData::WriteFlags flags, QV4::Scope &scope) = 0;-
126-
127 void getPropertyData(QQmlPropertyData **propertyData, QQmlPropertyData *valueTypeData) const;-
128 int getPropertyType() const;-
129-
130 bool slowWrite(const QQmlPropertyData &core, const QQmlPropertyData &valueTypeData,-
131 const QV4::Value &result, bool isUndefined, QQmlPropertyData::WriteFlags flags);-
132-
133 QV4::ReturnedValue evaluate(bool *isUndefined);-
134-
135private:-
136 inline bool updatingFlag() const;-
137 inline void setUpdatingFlag(bool);-
138 inline bool enabledFlag() const;-
139 inline void setEnabledFlag(bool);-
140-
141 static QQmlBinding *newBinding(QQmlEnginePrivate *engine, const QQmlPropertyData *property);-
142-
143 QQmlSourceLocation *m_sourceLocation = nullptr; // used for Qt.binding() created functions-
144 QV4::PersistentValue m_boundFunction; // used for Qt.binding() that are created from a bound function object-
145};-
146-
147bool QQmlBinding::updatingFlag() const-
148{-
149 return m_target.flag();
executed 891388 times by 121 tests: return m_target.flag();
Executed by:
  • tst_bindingdependencyapi
  • tst_drawingmodes
  • tst_examples
  • tst_flickableinterop
  • tst_multipointtoucharea_interop
  • tst_qmlcachegen
  • tst_qmldiskcache
  • tst_qqmlapplicationengine
  • tst_qqmlbinding
  • tst_qqmlcomponent
  • tst_qqmlconnections
  • tst_qqmlcontext
  • tst_qqmlecmascript
  • tst_qqmlenginedebugservice
  • tst_qqmlincubator
  • tst_qqmlinfo
  • tst_qqmlinstantiator
  • tst_qqmlitemmodels
  • tst_qqmllistmodel
  • tst_qqmllistreference
  • tst_qqmllocale
  • tst_qqmlmetaobject
  • tst_qqmlmetatype
  • tst_qqmlnotifier
  • tst_qqmlprofilerservice
  • ...
891388
150}-
151-
152void QQmlBinding::setUpdatingFlag(bool v)-
153{-
154 m_target.setFlagValue(v);-
155}
executed 1782728 times by 121 tests: end of block
Executed by:
  • tst_bindingdependencyapi
  • tst_drawingmodes
  • tst_examples
  • tst_flickableinterop
  • tst_multipointtoucharea_interop
  • tst_qmlcachegen
  • tst_qmldiskcache
  • tst_qqmlapplicationengine
  • tst_qqmlbinding
  • tst_qqmlcomponent
  • tst_qqmlconnections
  • tst_qqmlcontext
  • tst_qqmlecmascript
  • tst_qqmlenginedebugservice
  • tst_qqmlincubator
  • tst_qqmlinfo
  • tst_qqmlinstantiator
  • tst_qqmlitemmodels
  • tst_qqmllistmodel
  • tst_qqmllistreference
  • tst_qqmllocale
  • tst_qqmlmetaobject
  • tst_qqmlmetatype
  • tst_qqmlnotifier
  • tst_qqmlprofilerservice
  • ...
1782728
156-
157bool QQmlBinding::enabledFlag() const-
158{-
159 return m_target.flag2();
executed 1481331 times by 121 tests: return m_target.flag2();
Executed by:
  • tst_bindingdependencyapi
  • tst_drawingmodes
  • tst_examples
  • tst_flickableinterop
  • tst_multipointtoucharea_interop
  • tst_qmlcachegen
  • tst_qmldiskcache
  • tst_qqmlapplicationengine
  • tst_qqmlbinding
  • tst_qqmlcomponent
  • tst_qqmlconnections
  • tst_qqmlcontext
  • tst_qqmlecmascript
  • tst_qqmlenginedebugservice
  • tst_qqmlincubator
  • tst_qqmlinfo
  • tst_qqmlinstantiator
  • tst_qqmlitemmodels
  • tst_qqmllistmodel
  • tst_qqmllistreference
  • tst_qqmllocale
  • tst_qqmlmetaobject
  • tst_qqmlmetatype
  • tst_qqmlnotifier
  • tst_qqmlprofilerservice
  • ...
1481331
160}-
161-
162void QQmlBinding::setEnabledFlag(bool v)-
163{-
164 m_target.setFlag2Value(v);-
165}
executed 560567 times by 121 tests: end of block
Executed by:
  • tst_bindingdependencyapi
  • tst_drawingmodes
  • tst_examples
  • tst_flickableinterop
  • tst_multipointtoucharea_interop
  • tst_qmlcachegen
  • tst_qmldiskcache
  • tst_qqmlapplicationengine
  • tst_qqmlbinding
  • tst_qqmlcomponent
  • tst_qqmlconnections
  • tst_qqmlcontext
  • tst_qqmlecmascript
  • tst_qqmlenginedebugservice
  • tst_qqmlincubator
  • tst_qqmlinfo
  • tst_qqmlinstantiator
  • tst_qqmlitemmodels
  • tst_qqmllistmodel
  • tst_qqmllistreference
  • tst_qqmllocale
  • tst_qqmlmetaobject
  • tst_qqmlmetatype
  • tst_qqmlnotifier
  • tst_qqmlprofilerservice
  • ...
560567
166-
167QT_END_NAMESPACE-
168-
169Q_DECLARE_METATYPE(QQmlBinding*)-
170-
171#endif // QQMLBINDING_P_H-
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