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Diffstat (limited to 'src/declarative/util/qdeclarativelistmodel_p_p.h')
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diff --git a/src/declarative/util/qdeclarativelistmodel_p_p.h b/src/declarative/util/qdeclarativelistmodel_p_p.h new file mode 100644 index 00000000..c5a897c3 --- /dev/null +++ b/src/declarative/util/qdeclarativelistmodel_p_p.h @@ -0,0 +1,281 @@ +/**************************************************************************** +** +** Copyright (C) 2012 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QDECLARATIVELISTMODEL_P_P_H +#define QDECLARATIVELISTMODEL_P_P_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 "private/qdeclarativelistmodel_p.h" +#include "private/qdeclarativeengine_p.h" +#include "private/qdeclarativeopenmetaobject_p.h" +#include "qdeclarative.h" + +#include <private/qscriptdeclarativeclass_p.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Declarative) + +class QDeclarativeOpenMetaObject; +class QScriptEngine; +class QDeclarativeListModelWorkerAgent; +struct ModelNode; +class FlatListScriptClass; +class FlatNodeData; + +class FlatListModel +{ +public: + FlatListModel(QDeclarativeListModel *base); + ~FlatListModel(); + + QVariant data(int index, int role) const; + + QList<int> roles() const; + QString toString(int role) const; + + int count() const; + void clear(); + void remove(int index); + bool insert(int index, const QScriptValue&); + QScriptValue get(int index) const; + void set(int index, const QScriptValue&, QList<int> *roles); + void setProperty(int index, const QString& property, const QVariant& value, QList<int> *roles); + void move(int from, int to, int count); + +private: + friend class QDeclarativeListModelWorkerAgent; + friend class QDeclarativeListModel; + friend class FlatListScriptClass; + friend class FlatNodeData; + + bool addValue(const QScriptValue &value, QHash<int, QVariant> *row, QList<int> *roles); + void insertedNode(int index); + void removedNode(int index); + void moveNodes(int from, int to, int n); + + QScriptEngine *m_scriptEngine; + QHash<int, QString> m_roles; + QHash<QString, int> m_strings; + QList<QHash<int, QVariant> > m_values; + QDeclarativeListModel *m_listModel; + + FlatListScriptClass *m_scriptClass; + QList<FlatNodeData *> m_nodeData; + QDeclarativeListModelWorkerAgent *m_parentAgent; +}; + + +/* + Created when get() is called on a FlatListModel. This allows changes to the + object returned by get() to be tracked, and passed onto the model. +*/ +class FlatListScriptClass : public QScriptDeclarativeClass +{ +public: + FlatListScriptClass(FlatListModel *model, QScriptEngine *seng); + + Value property(Object *, const Identifier &); + void setProperty(Object *, const Identifier &name, const QScriptValue &); + QScriptClass::QueryFlags queryProperty(Object *, const Identifier &, QScriptClass::QueryFlags flags); + bool compare(Object *, Object *); + +private: + FlatListModel *m_model; +}; + +/* + FlatNodeData and FlatNodeObjectData allow objects returned by get() to still + point to the correct list index if move(), insert() or remove() are called. +*/ +struct FlatNodeObjectData; +class FlatNodeData +{ +public: + FlatNodeData(int i) + : index(i) {} + + ~FlatNodeData(); + + void addData(FlatNodeObjectData *data); + void removeData(FlatNodeObjectData *data); + + int index; + +private: + QSet<FlatNodeObjectData*> objects; +}; + +struct FlatNodeObjectData : public QScriptDeclarativeClass::Object +{ + FlatNodeObjectData(FlatNodeData *data) : nodeData(data) { + nodeData->addData(this); + } + + ~FlatNodeObjectData() { + if (nodeData) + nodeData->removeData(this); + } + + FlatNodeData *nodeData; +}; + + + +class NestedListModel +{ +public: + NestedListModel(QDeclarativeListModel *base); + ~NestedListModel(); + + QHash<int,QVariant> data(int index, const QList<int> &roles, bool *hasNested = 0) const; + QVariant data(int index, int role) const; + + QList<int> roles() const; + QString toString(int role) const; + + int count() const; + void clear(); + void remove(int index); + bool insert(int index, const QScriptValue&); + QScriptValue get(int index) const; + void set(int index, const QScriptValue&, QList<int> *roles); + void setProperty(int index, const QString& property, const QVariant& value, QList<int> *roles); + void move(int from, int to, int count); + + QVariant valueForNode(ModelNode *, bool *hasNested = 0) const; + void checkRoles() const; + + ModelNode *_root; + bool m_ownsRoot; + QDeclarativeListModel *m_listModel; + +private: + friend struct ModelNode; + mutable QStringList roleStrings; + mutable bool _rolesOk; +}; + + +class ModelNodeMetaObject; +class ModelObject : public QObject +{ + Q_OBJECT +public: + ModelObject(ModelNode *node, NestedListModel *model, QScriptEngine *seng); + void setValue(const QByteArray &name, const QVariant &val); + void setNodeUpdatesEnabled(bool enable); + + NestedListModel *m_model; + ModelNode *m_node; + +private: + ModelNodeMetaObject *m_meta; +}; + +class ModelNodeMetaObject : public QDeclarativeOpenMetaObject +{ +public: + ModelNodeMetaObject(QScriptEngine *seng, ModelObject *object); + + bool m_enabled; + +protected: + void propertyWritten(int index); + +private: + QScriptEngine *m_seng; + ModelObject *m_obj; +}; + + +/* + A ModelNode is created for each item in a NestedListModel. +*/ +struct ModelNode +{ + ModelNode(NestedListModel *model); + ~ModelNode(); + + QList<QVariant> values; + QHash<QString, ModelNode *> properties; + + void clear(); + + QDeclarativeListModel *model(const NestedListModel *model); + ModelObject *object(const NestedListModel *model); + + bool setObjectValue(const QScriptValue& valuemap, bool writeToCache = true); + void setListValue(const QScriptValue& valuelist); + bool setProperty(const QString& prop, const QVariant& val); + void changedProperty(const QString &name) const; + void updateListIndexes(); + static void dump(ModelNode *node, int ind); + + QDeclarativeListModel *modelCache; + ModelObject *objectCache; + bool isArray; + + NestedListModel *m_model; + int listIndex; // only used for top-level nodes within a list +}; + + +QT_END_NAMESPACE + +Q_DECLARE_METATYPE(ModelNode *) + +QT_END_HEADER + +#endif // QDECLARATIVELISTMODEL_P_P_H + |