1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtDeclarative 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 http://www.qt.io/terms-conditions. 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These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 #ifndef QDECLARATIVELISTMODELWORKERAGENT_P_H 43 #define QDECLARATIVELISTMODELWORKERAGENT_P_H 44 45 // 46 // W A R N I N G 47 // ------------- 48 // 49 // This file is not part of the Qt API. It exists purely as an 50 // implementation detail. This header file may change from version to 51 // version without notice, or even be removed. 52 // 53 // We mean it. 54 // 55 56 #include "qdeclarative.h" 57 58 #include <QtScript/qscriptvalue.h> 59 #include <QtGui/qevent.h> 60 #include <QMutex> 61 #include <QWaitCondition> 62 63 QT_BEGIN_HEADER 64 65 QT_BEGIN_NAMESPACE 66 67 QT_MODULE(Declarative) 68 69 class QDeclarativeListModel; 70 class FlatListScriptClass; 71 72 class QDeclarativeListModelWorkerAgent : public QObject 73 { 74 Q_OBJECT 75 Q_PROPERTY(int count READ count) 76 77 public: 78 QDeclarativeListModelWorkerAgent(QDeclarativeListModel *); 79 ~QDeclarativeListModelWorkerAgent(); 80 81 void setScriptEngine(QScriptEngine *eng); 82 QScriptEngine *scriptEngine() const; 83 84 void addref(); 85 void release(); 86 87 int count() const; 88 89 Q_INVOKABLE void clear(); 90 Q_INVOKABLE void remove(int index); 91 Q_INVOKABLE void append(const QScriptValue &); 92 Q_INVOKABLE void insert(int index, const QScriptValue&); 93 Q_INVOKABLE QScriptValue get(int index) const; 94 Q_INVOKABLE void set(int index, const QScriptValue &); 95 Q_INVOKABLE void setProperty(int index, const QString& property, const QVariant& value); 96 Q_INVOKABLE void move(int from, int to, int count); 97 Q_INVOKABLE void sync(); 98 99 struct VariantRef 100 { VariantRefVariantRef101 VariantRef() : a(0) {} VariantRefVariantRef102 VariantRef(const VariantRef &r) : a(r.a) { if (a) a->addref(); } VariantRefVariantRef103 VariantRef(QDeclarativeListModelWorkerAgent *_a) : a(_a) { if (a) a->addref(); } ~VariantRefVariantRef104 ~VariantRef() { if (a) a->release(); } 105 106 VariantRef &operator=(const VariantRef &o) { 107 if (o.a) o.a->addref(); 108 if (a) a->release(); a = o.a; 109 return *this; 110 } 111 112 QDeclarativeListModelWorkerAgent *a; 113 }; 114 protected: 115 virtual bool event(QEvent *); 116 117 private: 118 friend class QDeclarativeWorkerScriptEnginePrivate; 119 friend class FlatListScriptClass; 120 QScriptEngine *m_engine; 121 122 struct Change { 123 enum { Inserted, Removed, Moved, Changed } type; 124 int index; // Inserted/Removed/Moved/Changed 125 int count; // Inserted/Removed/Moved/Changed 126 int to; // Moved 127 QList<int> roles; 128 }; 129 130 struct Data { 131 QList<Change> changes; 132 133 void clearChange(); 134 void insertChange(int index, int count); 135 void removeChange(int index, int count); 136 void moveChange(int index, int count, int to); 137 void changedChange(int index, int count, const QList<int> &roles); 138 }; 139 Data data; 140 141 struct Sync : public QEvent { SyncSync142 Sync() : QEvent(QEvent::User) {} 143 Data data; 144 QDeclarativeListModel *list; 145 }; 146 147 void changedData(int index, int count, const QList<int> &roles); 148 149 QAtomicInt m_ref; 150 QDeclarativeListModel *m_orig; 151 QDeclarativeListModel *m_copy; 152 QMutex mutex; 153 QWaitCondition syncDone; 154 }; 155 156 QT_END_NAMESPACE 157 158 Q_DECLARE_METATYPE(QDeclarativeListModelWorkerAgent::VariantRef) 159 160 QT_END_HEADER 161 162 #endif // QDECLARATIVEWORKERSCRIPT_P_H 163 164