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Diffstat (limited to 'src/declarative/items/qquickvisualdatamodel.cpp')
| -rw-r--r-- | src/declarative/items/qquickvisualdatamodel.cpp | 2668 |
1 files changed, 0 insertions, 2668 deletions
diff --git a/src/declarative/items/qquickvisualdatamodel.cpp b/src/declarative/items/qquickvisualdatamodel.cpp deleted file mode 100644 index 649ca6f96b..0000000000 --- a/src/declarative/items/qquickvisualdatamodel.cpp +++ /dev/null @@ -1,2668 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 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. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qquickvisualdatamodel_p.h" -#include "qquickitem.h" - -#include <QtCore/qcoreapplication.h> -#include <QtDeclarative/qdeclarativecontext.h> -#include <QtDeclarative/qdeclarativeengine.h> -#include <QtDeclarative/qdeclarativeexpression.h> -#include <QtDeclarative/qdeclarativeinfo.h> -#include <QtDeclarative/qdeclarativeincubator.h> - -#include <private/qdeclarativecontext_p.h> -#include <private/qdeclarativepackage_p.h> -#include <private/qdeclarativeopenmetaobject_p.h> -#include <private/qdeclarativelistaccessor_p.h> -#include <private/qdeclarativedata_p.h> -#include <private/qdeclarativepropertycache_p.h> -#include <private/qdeclarativeguard_p.h> -#include <private/qdeclarativeglobal_p.h> -#include <private/qmetaobjectbuilder_p.h> -#include <private/qdeclarativeproperty_p.h> -#include <private/qquickvisualadaptormodel_p.h> -#include <private/qdeclarativechangeset_p.h> -#include <private/qdeclarativelistcompositor_p.h> -#include <private/qdeclarativeengine_p.h> -#include <private/qquickitem_p.h> -#include <private/qobject_p.h> - -#include <QtCore/qhash.h> -#include <QtCore/qlist.h> - -QT_BEGIN_NAMESPACE - -typedef QDeclarativeListCompositor Compositor; - -class QQuickVisualDataModelPrivate; -class QVDMIncubationTask : public QDeclarativeIncubator -{ -public: - QVDMIncubationTask(QQuickVisualDataModelPrivate *l, IncubationMode mode) - : QDeclarativeIncubator(mode) - , incubating(0) - , incubatingContext(0) - , vdm(l) {} - - virtual void statusChanged(Status); - virtual void setInitialState(QObject *); - - QQuickVisualDataModelCacheItem *incubating; - QDeclarativeContext *incubatingContext; - -private: - QQuickVisualDataModelPrivate *vdm; -}; - - -class QQuickVisualDataGroupEmitter -{ -public: - virtual void emitModelUpdated(const QDeclarativeChangeSet &changeSet, bool reset) = 0; - virtual void createdPackage(int, QDeclarativePackage *) {} - virtual void initPackage(int, QDeclarativePackage *) {} - virtual void destroyingPackage(QDeclarativePackage *) {} - - QIntrusiveListNode emitterNode; -}; - -typedef QIntrusiveList<QQuickVisualDataGroupEmitter, &QQuickVisualDataGroupEmitter::emitterNode> QQuickVisualDataGroupEmitterList; - -//--------------------------------------------------------------------------- - -class QQuickVisualDataGroupPrivate : public QObjectPrivate -{ -public: - Q_DECLARE_PUBLIC(QQuickVisualDataGroup) - - QQuickVisualDataGroupPrivate() : group(Compositor::Cache), defaultInclude(false) {} - - static QQuickVisualDataGroupPrivate *get(QQuickVisualDataGroup *group) { - return static_cast<QQuickVisualDataGroupPrivate *>(QObjectPrivate::get(group)); } - - void setModel(QQuickVisualDataModel *model, Compositor::Group group); - void emitChanges(QV8Engine *engine); - void emitModelUpdated(bool reset); - - void createdPackage(int index, QDeclarativePackage *package); - void initPackage(int index, QDeclarativePackage *package); - void destroyingPackage(QDeclarativePackage *package); - - bool parseGroupArgs(QDeclarativeV8Function *args, int *index, int *count, int *groups) const; - - Compositor::Group group; - QDeclarativeGuard<QQuickVisualDataModel> model; - QQuickVisualDataGroupEmitterList emitters; - QDeclarativeChangeSet changeSet; - QString name; - bool defaultInclude; -}; - -//--------------------------------------------------------------------------- - -class QQuickVisualDataModelCacheItem; -class QQuickVisualDataModelCacheMetaType; -class QQuickVisualDataModelParts; - -class QQuickVisualDataModelCacheMetaType : public QDeclarativeRefCount -{ -public: - QQuickVisualDataModelCacheMetaType(QV8Engine *engine, QQuickVisualDataModel *model, const QStringList &groupNames); - ~QQuickVisualDataModelCacheMetaType(); - - int parseGroups(const QStringList &groupNames) const; - int parseGroups(QV8Engine *engine, const v8::Local<v8::Value> &groupNames) const; - - static v8::Handle<v8::Value> get_model(v8::Local<v8::String>, const v8::AccessorInfo &info); - static v8::Handle<v8::Value> get_groups(v8::Local<v8::String>, const v8::AccessorInfo &info); - static void set_groups( - v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info); - static v8::Handle<v8::Value> get_member(v8::Local<v8::String>, const v8::AccessorInfo &info); - static void set_member( - v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info); - static v8::Handle<v8::Value> get_index(v8::Local<v8::String>, const v8::AccessorInfo &info); - - QDeclarativeGuard<QQuickVisualDataModel> model; - const int groupCount; - const int memberPropertyOffset; - const int indexPropertyOffset; - QV8Engine * const v8Engine; - QMetaObject *metaObject; - const QStringList groupNames; - v8::Persistent<v8::Function> constructor; -}; - -class QQuickVisualDataModelCacheItem : public QV8ObjectResource -{ - V8_RESOURCE_TYPE(VisualDataItemType) -public: - QQuickVisualDataModelCacheItem(QQuickVisualDataModelCacheMetaType *metaType) - : QV8ObjectResource(metaType->v8Engine) - , metaType(metaType) - , object(0) - , attached(0) - , objectRef(0) - , scriptRef(0) - , groups(0) - , incubationTask(0) - { - metaType->addref(); - } - - ~QQuickVisualDataModelCacheItem(); - - void referenceObject() { ++objectRef; } - bool releaseObject() { return --objectRef == 0 && !(groups & Compositor::PersistedFlag); } - bool isObjectReferenced() const { return objectRef == 0 && !(groups & Compositor::PersistedFlag); } - - bool isReferenced() const { return objectRef || scriptRef || (groups & Compositor::PersistedFlag) || incubationTask; } - - void Dispose(); - - QQuickVisualDataModelCacheMetaType * const metaType; - QDeclarativeGuard<QObject> object; - QQuickVisualDataModelAttached *attached; - int objectRef; - int scriptRef; - int groups; - int index[Compositor::MaximumGroupCount]; - QVDMIncubationTask *incubationTask; -}; - - -class QQuickVisualDataModelPrivate : public QObjectPrivate, public QQuickVisualDataGroupEmitter -{ - Q_DECLARE_PUBLIC(QQuickVisualDataModel) -public: - QQuickVisualDataModelPrivate(QDeclarativeContext *); - ~QQuickVisualDataModelPrivate(); - - static QQuickVisualDataModelPrivate *get(QQuickVisualDataModel *m) { - return static_cast<QQuickVisualDataModelPrivate *>(QObjectPrivate::get(m)); - } - - void init(); - void connectModel(QQuickVisualAdaptorModel *model); - - QObject *object(Compositor::Group group, int index, bool asynchronous, bool reference); - void destroy(QObject *object); - QQuickVisualDataModel::ReleaseFlags release(QObject *object); - QString stringValue(Compositor::Group group, int index, const QString &name); - int cacheIndexOf(QObject *object) const; - void emitCreatedPackage(QQuickVisualDataModelCacheItem *cacheItem, QDeclarativePackage *package); - void emitInitPackage(QQuickVisualDataModelCacheItem *cacheItem, QDeclarativePackage *package); - void emitCreatedItem(QQuickVisualDataModelCacheItem *cacheItem, QQuickItem *item) { - emit q_func()->createdItem(cacheItem->index[m_compositorGroup], item); } - void emitInitItem(QQuickVisualDataModelCacheItem *cacheItem, QQuickItem *item) { - emit q_func()->initItem(cacheItem->index[m_compositorGroup], item); } - void emitDestroyingPackage(QDeclarativePackage *package); - void emitDestroyingItem(QQuickItem *item) { emit q_func()->destroyingItem(item); } - - void updateFilterGroup(); - - void addGroups(Compositor::Group group, int index, int count, int groupFlags); - void removeGroups(Compositor::Group group, int index, int count, int groupFlags); - void setGroups(Compositor::Group group, int index, int count, int groupFlags); - - void itemsInserted( - const QVector<Compositor::Insert> &inserts, - QVarLengthArray<QVector<QDeclarativeChangeSet::Insert>, Compositor::MaximumGroupCount> *translatedInserts, - QHash<int, QList<QQuickVisualDataModelCacheItem *> > *movedItems = 0); - void itemsInserted(const QVector<Compositor::Insert> &inserts); - void itemsRemoved( - const QVector<Compositor::Remove> &removes, - QVarLengthArray<QVector<QDeclarativeChangeSet::Remove>, Compositor::MaximumGroupCount> *translatedRemoves, - QHash<int, QList<QQuickVisualDataModelCacheItem *> > *movedItems = 0); - void itemsRemoved(const QVector<Compositor::Remove> &removes); - void itemsMoved( - const QVector<Compositor::Remove> &removes, const QVector<Compositor::Insert> &inserts); - void itemsChanged(const QVector<Compositor::Change> &changes); - template <typename T> static v8::Local<v8::Array> buildChangeList(const QVector<T> &changes); - void emitChanges(); - void emitModelUpdated(const QDeclarativeChangeSet &changeSet, bool reset); - - - static void group_append(QDeclarativeListProperty<QQuickVisualDataGroup> *property, QQuickVisualDataGroup *group); - static int group_count(QDeclarativeListProperty<QQuickVisualDataGroup> *property); - static QQuickVisualDataGroup *group_at(QDeclarativeListProperty<QQuickVisualDataGroup> *property, int index); - - void releaseIncubator(QVDMIncubationTask *incubationTask); - void incubatorStatusChanged(QVDMIncubationTask *incubationTask, QDeclarativeIncubator::Status status); - void setInitialState(QVDMIncubationTask *incubationTask, QObject *o); - - QQuickVisualAdaptorModel *m_adaptorModel; - QDeclarativeComponent *m_delegate; - QQuickVisualDataModelCacheMetaType *m_cacheMetaType; - QDeclarativeGuard<QDeclarativeContext> m_context; - - QList<QQuickVisualDataModelCacheItem *> m_cache; - QQuickVisualDataModelParts *m_parts; - QQuickVisualDataGroupEmitterList m_pendingParts; - - QDeclarativeListCompositor m_compositor; - QDeclarativeListCompositor::Group m_compositorGroup; - bool m_complete : 1; - bool m_delegateValidated : 1; - bool m_reset : 1; - bool m_transaction : 1; - bool m_incubatorCleanupScheduled : 1; - - QString m_filterGroup; - QList<QByteArray> watchedRoles; - - union { - struct { - QQuickVisualDataGroup *m_cacheItems; - QQuickVisualDataGroup *m_items; - QQuickVisualDataGroup *m_persistedItems; - }; - QQuickVisualDataGroup *m_groups[Compositor::MaximumGroupCount]; - }; - int m_groupCount; - - QList<QVDMIncubationTask *> m_finishedIncubating; -}; - -//--------------------------------------------------------------------------- - -class QQuickVisualPartsModel : public QQuickVisualModel, public QQuickVisualDataGroupEmitter -{ - Q_OBJECT - Q_PROPERTY(QString filterOnGroup READ filterGroup WRITE setFilterGroup NOTIFY filterGroupChanged RESET resetFilterGroup) -public: - QQuickVisualPartsModel(QQuickVisualDataModel *model, const QString &part, QObject *parent = 0); - ~QQuickVisualPartsModel(); - - QString filterGroup() const; - void setFilterGroup(const QString &group); - void resetFilterGroup(); - void updateFilterGroup(); - void updateFilterGroup(Compositor::Group group, const QDeclarativeChangeSet &changeSet); - - int count() const; - bool isValid() const; - QQuickItem *item(int index, bool asynchronous=false); - ReleaseFlags release(QQuickItem *item); - QString stringValue(int index, const QString &role); - void setWatchedRoles(QList<QByteArray> roles); - - int indexOf(QQuickItem *item, QObject *objectContext) const; - - void emitModelUpdated(const QDeclarativeChangeSet &changeSet, bool reset); - - void createdPackage(int index, QDeclarativePackage *package); - void initPackage(int index, QDeclarativePackage *package); - void destroyingPackage(QDeclarativePackage *package); - -Q_SIGNALS: - void filterGroupChanged(); - -private: - QQuickVisualDataModel *m_model; - QHash<QObject *, QDeclarativePackage *> m_packaged; - QString m_part; - QString m_filterGroup; - QList<QByteArray> m_watchedRoles; - Compositor::Group m_compositorGroup; - bool m_inheritGroup; -}; - -class QQuickVisualDataModelPartsMetaObject : public QDeclarativeOpenMetaObject -{ -public: - QQuickVisualDataModelPartsMetaObject(QObject *parent) - : QDeclarativeOpenMetaObject(parent) {} - - virtual void propertyCreated(int, QMetaPropertyBuilder &); - virtual QVariant initialValue(int); -}; - -class QQuickVisualDataModelParts : public QObject -{ -Q_OBJECT -public: - QQuickVisualDataModelParts(QQuickVisualDataModel *parent); - - QQuickVisualDataModel *model; - QList<QQuickVisualPartsModel *> models; -}; - -void QQuickVisualDataModelPartsMetaObject::propertyCreated(int, QMetaPropertyBuilder &prop) -{ - prop.setWritable(false); -} - -QVariant QQuickVisualDataModelPartsMetaObject::initialValue(int id) -{ - QQuickVisualDataModelParts *parts = static_cast<QQuickVisualDataModelParts *>(object()); - QQuickVisualPartsModel *m = new QQuickVisualPartsModel( - parts->model, QString::fromUtf8(name(id)), parts); - parts->models.append(m); - return QVariant::fromValue(static_cast<QObject *>(m)); -} - -QQuickVisualDataModelParts::QQuickVisualDataModelParts(QQuickVisualDataModel *parent) -: QObject(parent), model(parent) -{ - new QQuickVisualDataModelPartsMetaObject(this); -} - -class QQuickVisualDataModelAttachedMetaObject : public QAbstractDynamicMetaObject -{ -public: - QQuickVisualDataModelAttachedMetaObject( - QQuickVisualDataModelAttached *attached, QQuickVisualDataModelCacheMetaType *metaType); - ~QQuickVisualDataModelAttachedMetaObject(); - - int metaCall(QMetaObject::Call, int _id, void **); - -private: - QQuickVisualDataModelAttached *attached; - QQuickVisualDataModelCacheMetaType *metaType; -}; - -//--------------------------------------------------------------------------- - -QHash<QObject*, QQuickVisualDataModelAttached*> QQuickVisualDataModelAttached::attachedProperties; - -/*! - \qmlclass VisualDataModel QQuickVisualDataModel - \inqmlmodule QtQuick 2 - \ingroup qml-working-with-data - \brief The VisualDataModel encapsulates a model and delegate - - A VisualDataModel encapsulates a model and the delegate that will - be instantiated for items in the model. - - It is usually not necessary to create VisualDataModel elements. - However, it can be useful for manipulating and accessing the \l modelIndex - when a QAbstractItemModel subclass is used as the - model. Also, VisualDataModel is used together with \l Package to - provide delegates to multiple views. - - The example below illustrates using a VisualDataModel with a ListView. - - \snippet doc/src/snippets/declarative/visualdatamodel.qml 0 -*/ - -QQuickVisualDataModelPrivate::QQuickVisualDataModelPrivate(QDeclarativeContext *ctxt) - : m_adaptorModel(0) - , m_delegate(0) - , m_cacheMetaType(0) - , m_context(ctxt) - , m_parts(0) - , m_compositorGroup(Compositor::Cache) - , m_complete(false) - , m_delegateValidated(false) - , m_reset(false) - , m_transaction(false) - , m_incubatorCleanupScheduled(false) - , m_filterGroup(QStringLiteral("items")) - , m_cacheItems(0) - , m_items(0) - , m_groupCount(3) -{ -} - -QQuickVisualDataModelPrivate::~QQuickVisualDataModelPrivate() -{ - qDeleteAll(m_finishedIncubating); -} - -void QQuickVisualDataModelPrivate::connectModel(QQuickVisualAdaptorModel *model) -{ - Q_Q(QQuickVisualDataModel); - - QObject::connect(model, SIGNAL(itemsInserted(int,int)), q, SLOT(_q_itemsInserted(int,int))); - QObject::connect(model, SIGNAL(itemsRemoved(int,int)), q, SLOT(_q_itemsRemoved(int,int))); - QObject::connect(model, SIGNAL(itemsMoved(int,int,int)), q, SLOT(_q_itemsMoved(int,int,int))); - QObject::connect(model, SIGNAL(itemsChanged(int,int)), q, SLOT(_q_itemsChanged(int,int))); - QObject::connect(model, SIGNAL(modelReset(int,int)), q, SLOT(_q_modelReset(int,int))); -} - -void QQuickVisualDataModelPrivate::init() -{ - Q_Q(QQuickVisualDataModel); - m_compositor.setRemoveGroups(Compositor::GroupMask & ~Compositor::PersistedFlag); - - m_adaptorModel = new QQuickVisualAdaptorModel; - QObject::connect(m_adaptorModel, SIGNAL(rootIndexChanged()), q, SIGNAL(rootIndexChanged())); - - m_items = new QQuickVisualDataGroup(QStringLiteral("items"), q, Compositor::Default, q); - m_items->setDefaultInclude(true); - m_persistedItems = new QQuickVisualDataGroup(QStringLiteral("persistedItems"), q, Compositor::Persisted, q); - QQuickVisualDataGroupPrivate::get(m_items)->emitters.insert(this); -} - -QQuickVisualDataModel::QQuickVisualDataModel() -: QQuickVisualModel(*(new QQuickVisualDataModelPrivate(0))) -{ - Q_D(QQuickVisualDataModel); - d->init(); -} - -QQuickVisualDataModel::QQuickVisualDataModel(QDeclarativeContext *ctxt, QObject *parent) -: QQuickVisualModel(*(new QQuickVisualDataModelPrivate(ctxt)), parent) -{ - Q_D(QQuickVisualDataModel); - d->init(); -} - -QQuickVisualDataModel::~QQuickVisualDataModel() -{ - Q_D(QQuickVisualDataModel); - - foreach (QQuickVisualDataModelCacheItem *cacheItem, d->m_cache) { - delete cacheItem->object; - cacheItem->object = 0; - cacheItem->objectRef = 0; - if (!cacheItem->isReferenced()) - delete cacheItem; - } - - delete d->m_adaptorModel; - if (d->m_cacheMetaType) - d->m_cacheMetaType->release(); -} - - -void QQuickVisualDataModel::classBegin() -{ -} - -void QQuickVisualDataModel::componentComplete() -{ - Q_D(QQuickVisualDataModel); - d->m_complete = true; - - int defaultGroups = 0; - QStringList groupNames; - groupNames.append(QStringLiteral("items")); - groupNames.append(QStringLiteral("persistedItems")); - if (QQuickVisualDataGroupPrivate::get(d->m_items)->defaultInclude) - defaultGroups |= Compositor::DefaultFlag; - if (QQuickVisualDataGroupPrivate::get(d->m_persistedItems)->defaultInclude) - defaultGroups |= Compositor::PersistedFlag; - for (int i = 3; i < d->m_groupCount; ++i) { - QString name = d->m_groups[i]->name(); - if (name.isEmpty()) { - d->m_groups[i] = d->m_groups[d->m_groupCount - 1]; - --d->m_groupCount; - --i; - } else if (name.at(0).isUpper()) { - qmlInfo(d->m_groups[i]) << QQuickVisualDataGroup::tr("Group names must start with a lower case letter"); - d->m_groups[i] = d->m_groups[d->m_groupCount - 1]; - --d->m_groupCount; - --i; - } else { - groupNames.append(name); - - QQuickVisualDataGroupPrivate *group = QQuickVisualDataGroupPrivate::get(d->m_groups[i]); - group->setModel(this, Compositor::Group(i)); - if (group->defaultInclude) - defaultGroups |= (1 << i); - } - } - if (!d->m_context) - d->m_context = qmlContext(this); - - d->m_cacheMetaType = new QQuickVisualDataModelCacheMetaType( - QDeclarativeEnginePrivate::getV8Engine(d->m_context->engine()), this, groupNames); - - d->m_compositor.setGroupCount(d->m_groupCount); - d->m_compositor.setDefaultGroups(defaultGroups); - d->updateFilterGroup(); - - while (!d->m_pendingParts.isEmpty()) - static_cast<QQuickVisualPartsModel *>(d->m_pendingParts.first())->updateFilterGroup(); - - d->connectModel(d->m_adaptorModel); - QVector<Compositor::Insert> inserts; - d->m_reset = true; - d->m_compositor.append( - d->m_adaptorModel, - 0, - qMax(0, d->m_adaptorModel->count()), - defaultGroups | Compositor::AppendFlag | Compositor::PrependFlag, - &inserts); - d->itemsInserted(inserts); - d->emitChanges(); - - if (d->m_adaptorModel->canFetchMore()) - QCoreApplication::postEvent(this, new QEvent(QEvent::UpdateRequest)); -} - -/*! - \qmlproperty model QtQuick2::VisualDataModel::model - This property holds the model providing data for the VisualDataModel. - - The model provides a set of data that is used to create the items - for a view. For large or dynamic datasets the model is usually - provided by a C++ model object. The C++ model object must be a \l - {QAbstractItemModel} subclass or a simple list. - - Models can also be created directly in QML, using a \l{ListModel} or - \l{XmlListModel}. - - \sa {qmlmodels}{Data Models} -*/ -QVariant QQuickVisualDataModel::model() const -{ - Q_D(const QQuickVisualDataModel); - return d->m_adaptorModel->model(); -} - -void QQuickVisualDataModel::setModel(const QVariant &model) -{ - Q_D(QQuickVisualDataModel); - d->m_adaptorModel->setModel(model, d->m_context ? d->m_context->engine() : qmlEngine(this)); - if (d->m_complete && d->m_adaptorModel->canFetchMore()) - QCoreApplication::postEvent(this, new QEvent(QEvent::UpdateRequest)); -} - -/*! - \qmlproperty Component QtQuick2::VisualDataModel::delegate - - The delegate provides a template defining each item instantiated by a view. - The index is exposed as an accessible \c index property. Properties of the - model are also available depending upon the type of \l {qmlmodels}{Data Model}. -*/ -QDeclarativeComponent *QQuickVisualDataModel::delegate() const -{ - Q_D(const QQuickVisualDataModel); - return d->m_delegate; -} - -void QQuickVisualDataModel::setDelegate(QDeclarativeComponent *delegate) -{ - Q_D(QQuickVisualDataModel); - if (d->m_transaction) { - qmlInfo(this) << tr("The delegate of a VisualDataModel cannot be changed within onUpdated."); - return; - } - bool wasValid = d->m_delegate != 0; - d->m_delegate = delegate; - d->m_delegateValidated = false; - if (wasValid && d->m_complete) { - for (int i = 1; i < d->m_groupCount; ++i) { - QQuickVisualDataGroupPrivate::get(d->m_groups[i])->changeSet.remove( - 0, d->m_compositor.count(Compositor::Group(i))); - } - } - if (d->m_complete && d->m_delegate) { - for (int i = 1; i < d->m_groupCount; ++i) { - QQuickVisualDataGroupPrivate::get(d->m_groups[i])->changeSet.insert( - 0, d->m_compositor.count(Compositor::Group(i))); - } - } - d->emitChanges(); -} - -/*! - \qmlproperty QModelIndex QtQuick2::VisualDataModel::rootIndex - - QAbstractItemModel provides a hierarchical tree of data, whereas - QML only operates on list data. \c rootIndex allows the children of - any node in a QAbstractItemModel to be provided by this model. - - This property only affects models of type QAbstractItemModel that - are hierarchical (e.g, a tree model). - - For example, here is a simple interactive file system browser. - When a directory name is clicked, the view's \c rootIndex is set to the - QModelIndex node of the clicked directory, thus updating the view to show - the new directory's contents. - - \c main.cpp: - \snippet doc/src/snippets/declarative/visualdatamodel_rootindex/main.cpp 0 - - \c view.qml: - \snippet doc/src/snippets/declarative/visualdatamodel_rootindex/view.qml 0 - - If the \l model is a QAbstractItemModel subclass, the delegate can also - reference a \c hasModelChildren property (optionally qualified by a - \e model. prefix) that indicates whether the delegate's model item has - any child nodes. - - - \sa modelIndex(), parentModelIndex() -*/ -QVariant QQuickVisualDataModel::rootIndex() const -{ - Q_D(const QQuickVisualDataModel); - return d->m_adaptorModel->rootIndex(); -} - -void QQuickVisualDataModel::setRootIndex(const QVariant &root) -{ - Q_D(QQuickVisualDataModel); - d->m_adaptorModel->setRootIndex(root); -} - -/*! - \qmlmethod QModelIndex QtQuick2::VisualDataModel::modelIndex(int index) - - QAbstractItemModel provides a hierarchical tree of data, whereas - QML only operates on list data. This function assists in using - tree models in QML. - - Returns a QModelIndex for the specified index. - This value can be assigned to rootIndex. - - \sa rootIndex -*/ -QVariant QQuickVisualDataModel::modelIndex(int idx) const -{ - Q_D(const QQuickVisualDataModel); - return d->m_adaptorModel->modelIndex(idx); -} - -/*! - \qmlmethod QModelIndex QtQuick2::VisualDataModel::parentModelIndex() - - QAbstractItemModel provides a hierarchical tree of data, whereas - QML only operates on list data. This function assists in using - tree models in QML. - - Returns a QModelIndex for the parent of the current rootIndex. - This value can be assigned to rootIndex. - - \sa rootIndex -*/ -QVariant QQuickVisualDataModel::parentModelIndex() const -{ - Q_D(const QQuickVisualDataModel); - return d->m_adaptorModel->parentModelIndex(); -} - -/*! - \qmlproperty int QtQuick2::VisualDataModel::count -*/ - -int QQuickVisualDataModel::count() const -{ - Q_D(const QQuickVisualDataModel); - if (!d->m_delegate) - return 0; - return d->m_compositor.count(d->m_compositorGroup); -} - -void QQuickVisualDataModelPrivate::destroy(QObject *object) -{ - QObjectPrivate *p = QObjectPrivate::get(object); - Q_ASSERT(p->declarativeData); - QDeclarativeData *data = static_cast<QDeclarativeData*>(p->declarativeData); - if (data->ownContext && data->context) - data->context->clearContext(); - object->deleteLater(); -} - -QQuickVisualDataModel::ReleaseFlags QQuickVisualDataModelPrivate::release(QObject *object) -{ - QQuickVisualDataModel::ReleaseFlags stat = 0; - if (!object) - return stat; - - int cacheIndex = cacheIndexOf(object); - if (cacheIndex != -1) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - if (cacheItem->releaseObject()) { - destroy(object); - if (QQuickItem *item = qobject_cast<QQuickItem *>(object)) - emitDestroyingItem(item); - cacheItem->object = 0; - stat |= QQuickVisualModel::Destroyed; - if (!cacheItem->isReferenced()) { - m_compositor.clearFlags(Compositor::Cache, cacheIndex, 1, Compositor::CacheFlag); - m_cache.removeAt(cacheIndex); - delete cacheItem; - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - } - } else { - stat |= QQuickVisualDataModel::Referenced; - } - } - return stat; -} - -/* - Returns ReleaseStatus flags. -*/ - -QQuickVisualDataModel::ReleaseFlags QQuickVisualDataModel::release(QQuickItem *item) -{ - Q_D(QQuickVisualDataModel); - QQuickVisualModel::ReleaseFlags stat = d->release(item); - if (stat & Destroyed) - item->setParentItem(0); - return stat; -} - -void QQuickVisualDataModelPrivate::group_append( - QDeclarativeListProperty<QQuickVisualDataGroup> *property, QQuickVisualDataGroup *group) -{ - QQuickVisualDataModelPrivate *d = static_cast<QQuickVisualDataModelPrivate *>(property->data); - if (d->m_complete) - return; - if (d->m_groupCount == 11) { - qmlInfo(d->q_func()) << QQuickVisualDataModel::tr("The maximum number of supported VisualDataGroups is 8"); - return; - } - d->m_groups[d->m_groupCount] = group; - d->m_groupCount += 1; -} - -int QQuickVisualDataModelPrivate::group_count( - QDeclarativeListProperty<QQuickVisualDataGroup> *property) -{ - QQuickVisualDataModelPrivate *d = static_cast<QQuickVisualDataModelPrivate *>(property->data); - return d->m_groupCount - 1; -} - -QQuickVisualDataGroup *QQuickVisualDataModelPrivate::group_at( - QDeclarativeListProperty<QQuickVisualDataGroup> *property, int index) -{ - QQuickVisualDataModelPrivate *d = static_cast<QQuickVisualDataModelPrivate *>(property->data); - return index >= 0 && index < d->m_groupCount - 1 - ? d->m_groups[index + 1] - : 0; -} - -/*! - \qmlproperty list<VisualDataGroup> QtQuick2::VisualDataModel::groups - - This property holds a visual data model's group definitions. - - Groups define a sub-set of the items in a visual data model and can be used to filter - a model. - - For every group defined in a VisualDataModel two attached properties are added to each - delegate item. The first of the form VisualDataModel.in\e{GroupName} holds whether the - item belongs to the group and the second VisualDataModel.\e{groupName}Index holds the - index of the item in that group. - - The following example illustrates using groups to select items in a model. - - \snippet doc/src/snippets/declarative/visualdatagroup.qml 0 -*/ - -QDeclarativeListProperty<QQuickVisualDataGroup> QQuickVisualDataModel::groups() -{ - Q_D(QQuickVisualDataModel); - return QDeclarativeListProperty<QQuickVisualDataGroup>( - this, - d, - QQuickVisualDataModelPrivate::group_append, - QQuickVisualDataModelPrivate::group_count, - QQuickVisualDataModelPrivate::group_at); -} - -/*! - \qmlproperty VisualDataGroup QtQuick2::VisualDataModel::items - - This property holds visual data model's default group to which all new items are added. -*/ - -QQuickVisualDataGroup *QQuickVisualDataModel::items() -{ - Q_D(QQuickVisualDataModel); - return d->m_items; -} - -/*! - \qmlproperty VisualDataGroup QtQuick2::VisualDataModel::persistedItems - - This property holds visual data model's persisted items group. - - Items in this group are not destroyed when released by a view, instead they are persisted - until removed from the group. - - An item can be removed from the persistedItems group by setting the - VisualDataModel.inPersistedItems property to false. If the item is not referenced by a view - at that time it will be destroyed. Adding an item to this group will not create a new - instance. - - Items returned by the \l QtQuick2::VisualDataGroup::create() function are automatically added - to this group. -*/ - -QQuickVisualDataGroup *QQuickVisualDataModel::persistedItems() -{ - Q_D(QQuickVisualDataModel); - return d->m_persistedItems; -} - -/*! - \qmlproperty string QtQuick2::VisualDataModel::filterOnGroup - - This property holds the name of the group used to filter the visual data model. - - Only items which belong to this group are visible to a view. - - By default this is the \l items group. -*/ - -QString QQuickVisualDataModel::filterGroup() const -{ - Q_D(const QQuickVisualDataModel); - return d->m_filterGroup; -} - -void QQuickVisualDataModel::setFilterGroup(const QString &group) -{ - Q_D(QQuickVisualDataModel); - - if (d->m_transaction) { - qmlInfo(this) << tr("The group of a VisualDataModel cannot be changed within onChanged"); - return; - } - - if (d->m_filterGroup != group) { - d->m_filterGroup = group; - d->updateFilterGroup(); - emit filterGroupChanged(); - } -} - -void QQuickVisualDataModel::resetFilterGroup() -{ - setFilterGroup(QStringLiteral("items")); -} - -void QQuickVisualDataModelPrivate::updateFilterGroup() -{ - Q_Q(QQuickVisualDataModel); - if (!m_cacheMetaType) - return; - - QDeclarativeListCompositor::Group previousGroup = m_compositorGroup; - m_compositorGroup = Compositor::Default; - for (int i = 1; i < m_groupCount; ++i) { - if (m_filterGroup == m_cacheMetaType->groupNames.at(i - 1)) { - m_compositorGroup = Compositor::Group(i); - break; - } - } - - QQuickVisualDataGroupPrivate::get(m_groups[m_compositorGroup])->emitters.insert(this); - if (m_compositorGroup != previousGroup) { - QVector<QDeclarativeChangeSet::Remove> removes; - QVector<QDeclarativeChangeSet::Insert> inserts; - m_compositor.transition(previousGroup, m_compositorGroup, &removes, &inserts); - - QDeclarativeChangeSet changeSet; - changeSet.apply(removes, inserts); - emit q->modelUpdated(changeSet, false); - - if (changeSet.difference() != 0) - emit q->countChanged(); - - if (m_parts) { - foreach (QQuickVisualPartsModel *model, m_parts->models) - model->updateFilterGroup(m_compositorGroup, changeSet); - } - } -} - -/*! - \qmlproperty object QtQuick2::VisualDataModel::parts - - The \a parts property selects a VisualDataModel which creates - delegates from the part named. This is used in conjunction with - the \l Package element. - - For example, the code below selects a model which creates - delegates named \e list from a \l Package: - - \code - VisualDataModel { - id: visualModel - delegate: Package { - Item { Package.name: "list" } - } - model: myModel - } - - ListView { - width: 200; height:200 - model: visualModel.parts.list - } - \endcode - - \sa Package -*/ - -QObject *QQuickVisualDataModel::parts() -{ - Q_D(QQuickVisualDataModel); - if (!d->m_parts) - d->m_parts = new QQuickVisualDataModelParts(this); - return d->m_parts; -} - -void QQuickVisualDataModelPrivate::emitCreatedPackage(QQuickVisualDataModelCacheItem *cacheItem, QDeclarativePackage *package) -{ - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->createdPackage(cacheItem->index[i], package); -} - -void QQuickVisualDataModelPrivate::emitInitPackage(QQuickVisualDataModelCacheItem *cacheItem, QDeclarativePackage *package) -{ - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->initPackage(cacheItem->index[i], package); -} - -void QQuickVisualDataModelPrivate::emitDestroyingPackage(QDeclarativePackage *package) -{ - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->destroyingPackage(package); -} - -void QVDMIncubationTask::statusChanged(Status status) -{ - vdm->incubatorStatusChanged(this, status); -} - -void QQuickVisualDataModelPrivate::releaseIncubator(QVDMIncubationTask *incubationTask) -{ - Q_Q(QQuickVisualDataModel); - if (!incubationTask->isError()) - incubationTask->clear(); - m_finishedIncubating.append(incubationTask); - if (!m_incubatorCleanupScheduled) { - m_incubatorCleanupScheduled = true; - QCoreApplication::postEvent(q, new QEvent(QEvent::User)); - } -} - -void QQuickVisualDataModelPrivate::incubatorStatusChanged(QVDMIncubationTask *incubationTask, QDeclarativeIncubator::Status status) -{ - Q_Q(QQuickVisualDataModel); - if (status != QDeclarativeIncubator::Ready && status != QDeclarativeIncubator::Error) - return; - - QQuickVisualDataModelCacheItem *cacheItem = incubationTask->incubating; - cacheItem->incubationTask = 0; - - if (status == QDeclarativeIncubator::Ready) { - incubationTask->incubating = 0; - releaseIncubator(incubationTask); - if (QDeclarativePackage *package = qobject_cast<QDeclarativePackage *>(cacheItem->object)) - emitCreatedPackage(cacheItem, package); - else if (QQuickItem *item = qobject_cast<QQuickItem *>(cacheItem->object)) - emitCreatedItem(cacheItem, item); - } else if (status == QDeclarativeIncubator::Error) { - delete incubationTask->incubatingContext; - incubationTask->incubatingContext = 0; - if (!cacheItem->isReferenced()) { - int cidx = m_cache.indexOf(cacheItem); - m_compositor.clearFlags(Compositor::Cache, cidx, 1, Compositor::CacheFlag); - m_cache.removeAt(cidx); - delete cacheItem; - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - } - releaseIncubator(incubationTask); - qmlInfo(q, m_delegate->errors()) << "Error creating delegate"; - } -} - -void QVDMIncubationTask::setInitialState(QObject *o) -{ - vdm->setInitialState(this, o); -} - -void QQuickVisualDataModelPrivate::setInitialState(QVDMIncubationTask *incubationTask, QObject *o) -{ - QQuickVisualDataModelCacheItem *cacheItem = incubationTask->incubating; - cacheItem->object = o; - QDeclarative_setParent_noEvent(incubationTask->incubatingContext, cacheItem->object); - incubationTask->incubatingContext = 0; - - cacheItem->attached = QQuickVisualDataModelAttached::properties(cacheItem->object); - cacheItem->attached->m_cacheItem = cacheItem; - new QQuickVisualDataModelAttachedMetaObject(cacheItem->attached, m_cacheMetaType); - cacheItem->attached->emitChanges(); - - if (QDeclarativePackage *package = qobject_cast<QDeclarativePackage *>(cacheItem->object)) - emitInitPackage(cacheItem, package); - else if (QQuickItem *item = qobject_cast<QQuickItem *>(cacheItem->object)) - emitInitItem(cacheItem, item); -} - -QObject *QQuickVisualDataModelPrivate::object(Compositor::Group group, int index, bool asynchronous, bool reference) -{ - Q_Q(QQuickVisualDataModel); - if (!m_delegate || index < 0 || index >= m_compositor.count(group)) { - qWarning() << "VisualDataModel::item: index out range" << index << m_compositor.count(group); - return 0; - } - - Compositor::iterator it = m_compositor.find(group, index); - QQuickVisualDataModelCacheItem *cacheItem = it->inCache() ? m_cache.at(it.cacheIndex) : 0; - if (!cacheItem) { - cacheItem = new QQuickVisualDataModelCacheItem(m_cacheMetaType); - for (int i = 0; i < m_groupCount; ++i) - cacheItem->index[i] = it.index[i]; - cacheItem->groups = it->flags & Compositor::GroupMask; - } - - int modelIndex = it.modelIndex(); - - if (!it->inCache()) { - m_cache.insert(it.cacheIndex, cacheItem); - m_compositor.setFlags(it, 1, Compositor::CacheFlag); - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - } - - if (cacheItem->incubationTask) { - if (!asynchronous) { - // previously requested async - now needed immediately - cacheItem->incubationTask->forceCompletion(); - } - } else if (!cacheItem->object) { - QVDMIncubationTask *incubator = new QVDMIncubationTask(this, asynchronous ? QDeclarativeIncubator::Asynchronous : QDeclarativeIncubator::AsynchronousIfNested); - cacheItem->incubationTask = incubator; - - QObject *data = m_adaptorModel->data(modelIndex); - - QDeclarativeContext *creationContext = m_delegate->creationContext(); - QDeclarativeContext *rootContext = new QDeclarativeContext( - creationContext ? creationContext : m_context.data()); - QDeclarativeContext *ctxt = rootContext; - if (m_adaptorModel->flags() & QQuickVisualAdaptorModel::ProxiedObject) { - if (QQuickVisualAdaptorModelProxyInterface *proxy = qobject_cast<QQuickVisualAdaptorModelProxyInterface *>(data)) { - ctxt->setContextObject(proxy->proxiedObject()); - ctxt = new QDeclarativeContext(ctxt, ctxt); - } - } - - QDeclarative_setParent_noEvent(data, ctxt); - ctxt->setContextProperty(QLatin1String("model"), data); - ctxt->setContextObject(data); - - incubator->incubating = cacheItem; - incubator->incubatingContext = rootContext; - m_delegate->create(*incubator, ctxt, m_context); - } - - if (index == m_compositor.count(group) - 1 && m_adaptorModel->canFetchMore()) - QCoreApplication::postEvent(q, new QEvent(QEvent::UpdateRequest)); - if (cacheItem->object && reference) - cacheItem->referenceObject(); - return cacheItem->object; -} - -/* - If asynchronous is true or the component is being loaded asynchronously due - to an ancestor being loaded asynchronously, item() may return 0. In this - case itemCreated() will be emitted when the item is available. The item - at this stage does not have any references, so item() must be called again - to ensure a reference is held. Any call to item() which returns a valid item - must be matched by a call to release() in order to destroy the item. -*/ -QQuickItem *QQuickVisualDataModel::item(int index, bool asynchronous) -{ - Q_D(QQuickVisualDataModel); - if (!d->m_delegate || index < 0 || index >= d->m_compositor.count(d->m_compositorGroup)) { - qWarning() << "VisualDataModel::item: index out range" << index << d->m_compositor.count(d->m_compositorGroup); - return 0; - } - - QObject *object = d->object(d->m_compositorGroup, index, asynchronous, true); - if (!object) - return 0; - - if (QQuickItem *item = qobject_cast<QQuickItem *>(object)) - return item; - - d->release(object); - if (!d->m_delegateValidated) { - if (object) - qmlInfo(d->m_delegate) << QQuickVisualDataModel::tr("Delegate component must be Item type."); - d->m_delegateValidated = true; - } - return 0; -} - -QString QQuickVisualDataModelPrivate::stringValue(Compositor::Group group, int index, const QString &name) -{ - Compositor::iterator it = m_compositor.find(group, index); - if (QQuickVisualAdaptorModel *model = it.list<QQuickVisualAdaptorModel>()) { - return model->stringValue(it.modelIndex(), name); - } - return QString(); -} - -QString QQuickVisualDataModel::stringValue(int index, const QString &name) -{ - Q_D(QQuickVisualDataModel); - return d->stringValue(d->m_compositorGroup, index, name); -} - -int QQuickVisualDataModelPrivate::cacheIndexOf(QObject *object) const -{ - for (int cacheIndex = 0; cacheIndex < m_cache.count(); ++cacheIndex) { - if (m_cache.at(cacheIndex)->object == object) - return cacheIndex; - } - return -1; -} - -int QQuickVisualDataModel::indexOf(QQuickItem *item, QObject *) const -{ - Q_D(const QQuickVisualDataModel); - const int cacheIndex = d->cacheIndexOf(item); - return cacheIndex != -1 - ? d->m_cache.at(cacheIndex)->index[d->m_compositorGroup] - : -1; -} - -void QQuickVisualDataModel::setWatchedRoles(QList<QByteArray> roles) -{ - Q_D(QQuickVisualDataModel); - d->m_adaptorModel->replaceWatchedRoles(d->watchedRoles, roles); - d->watchedRoles = roles; -} - -void QQuickVisualDataModelPrivate::addGroups(Compositor::Group group, int index, int count, int groupFlags) -{ - QVector<Compositor::Insert> inserts; - m_compositor.setFlags(group, index, count, groupFlags, &inserts); - itemsInserted(inserts); - emitChanges(); -} - -void QQuickVisualDataModelPrivate::removeGroups(Compositor::Group group, int index, int count, int groupFlags) -{ - QVector<Compositor::Remove> removes; - m_compositor.clearFlags(group, index, count, groupFlags, &removes); - itemsRemoved(removes); - emitChanges(); -} - -void QQuickVisualDataModelPrivate::setGroups(Compositor::Group group, int index, int count, int groupFlags) -{ - QVector<Compositor::Insert> inserts; - m_compositor.setFlags(group, index, count, groupFlags, &inserts); - itemsInserted(inserts); - - const int removeFlags = ~groupFlags & Compositor::GroupMask; - QVector<Compositor::Remove> removes; - m_compositor.clearFlags(group, index, count, removeFlags, &removes); - itemsRemoved(removes); - - emitChanges(); -} - -bool QQuickVisualDataModel::event(QEvent *e) -{ - Q_D(QQuickVisualDataModel); - if (e->type() == QEvent::UpdateRequest) { - d->m_adaptorModel->fetchMore(); - } else if (e->type() == QEvent::User) { - d->m_incubatorCleanupScheduled = false; - qDeleteAll(d->m_finishedIncubating); - d->m_finishedIncubating.clear(); - } - return QQuickVisualModel::event(e); -} - -void QQuickVisualDataModelPrivate::itemsChanged(const QVector<Compositor::Change> &changes) -{ - if (!m_delegate) - return; - - QVarLengthArray<QVector<QDeclarativeChangeSet::Change>, Compositor::MaximumGroupCount> translatedChanges(m_groupCount); - - foreach (const Compositor::Change &change, changes) { - for (int i = 1; i < m_groupCount; ++i) { - if (change.inGroup(i)) { - translatedChanges[i].append( - QDeclarativeChangeSet::Change(change.index[i], change.count)); - } - } - } - - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->changeSet.apply(translatedChanges.at(i)); -} - -void QQuickVisualDataModel::_q_itemsChanged(int index, int count) -{ - Q_D(QQuickVisualDataModel); - if (count <= 0) - return; - QVector<Compositor::Change> changes; - d->m_compositor.listItemsChanged(d->m_adaptorModel, index, count, &changes); - d->itemsChanged(changes); - d->emitChanges(); -} - -void QQuickVisualDataModelPrivate::itemsInserted( - const QVector<Compositor::Insert> &inserts, - QVarLengthArray<QVector<QDeclarativeChangeSet::Insert>, Compositor::MaximumGroupCount> *translatedInserts, - QHash<int, QList<QQuickVisualDataModelCacheItem *> > *movedItems) -{ - int cacheIndex = 0; - - int inserted[Compositor::MaximumGroupCount]; - for (int i = 1; i < m_groupCount; ++i) - inserted[i] = 0; - - foreach (const Compositor::Insert &insert, inserts) { - for (; cacheIndex < insert.cacheIndex; ++cacheIndex) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - if (!cacheItem->groups) - continue; - for (int i = 1; i < m_groupCount; ++i) - cacheItem->index[i] += inserted[i]; - } - for (int i = 1; i < m_groupCount; ++i) { - if (insert.inGroup(i)) { - (*translatedInserts)[i].append( - QDeclarativeChangeSet::Insert(insert.index[i], insert.count, insert.moveId)); - inserted[i] += insert.count; - } - } - - if (!insert.inCache()) - continue; - - if (movedItems && insert.isMove()) { - QList<QQuickVisualDataModelCacheItem *> items = movedItems->take(insert.moveId); - Q_ASSERT(items.count() == insert.count); - m_cache = m_cache.mid(0, insert.cacheIndex) + items + m_cache.mid(insert.cacheIndex); - } - if (insert.inGroup()) { - for (int offset = 0; cacheIndex < insert.cacheIndex + insert.count; ++cacheIndex, ++offset) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - cacheItem->groups |= insert.flags & Compositor::GroupMask; - for (int i = 1; i < m_groupCount; ++i) { - cacheItem->index[i] = cacheItem->groups & (1 << i) - ? insert.index[i] + offset - : insert.index[i]; - } - } - } else { - cacheIndex = insert.cacheIndex + insert.count; - } - } - for (; cacheIndex < m_cache.count(); ++cacheIndex) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - if (!cacheItem->groups) - continue; - for (int i = 1; i < m_groupCount; ++i) - cacheItem->index[i] += inserted[i]; - } -} - -void QQuickVisualDataModelPrivate::itemsInserted(const QVector<Compositor::Insert> &inserts) -{ - QVarLengthArray<QVector<QDeclarativeChangeSet::Insert>, Compositor::MaximumGroupCount> translatedInserts(m_groupCount); - itemsInserted(inserts, &translatedInserts); - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - if (!m_delegate) - return; - - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->changeSet.apply(translatedInserts.at(i)); -} - -void QQuickVisualDataModel::_q_itemsInserted(int index, int count) -{ - - Q_D(QQuickVisualDataModel); - if (count <= 0) - return; - QVector<Compositor::Insert> inserts; - d->m_compositor.listItemsInserted(d->m_adaptorModel, index, count, &inserts); - d->itemsInserted(inserts); - d->emitChanges(); -} - -void QQuickVisualDataModelPrivate::itemsRemoved( - const QVector<Compositor::Remove> &removes, - QVarLengthArray<QVector<QDeclarativeChangeSet::Remove>, Compositor::MaximumGroupCount> *translatedRemoves, - QHash<int, QList<QQuickVisualDataModelCacheItem *> > *movedItems) -{ - int cacheIndex = 0; - int removedCache = 0; - - int removed[Compositor::MaximumGroupCount]; - for (int i = 1; i < m_groupCount; ++i) - removed[i] = 0; - - foreach (const Compositor::Remove &remove, removes) { - for (; cacheIndex < remove.cacheIndex; ++cacheIndex) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - if (!cacheItem->groups) - continue; - for (int i = 1; i < m_groupCount; ++i) - cacheItem->index[i] -= removed[i]; - } - for (int i = 1; i < m_groupCount; ++i) { - if (remove.inGroup(i)) { - (*translatedRemoves)[i].append( - QDeclarativeChangeSet::Remove(remove.index[i], remove.count, remove.moveId)); - removed[i] += remove.count; - } - } - - if (!remove.inCache()) - continue; - - if (movedItems && remove.isMove()) { - movedItems->insert(remove.moveId, m_cache.mid(remove.cacheIndex, remove.count)); - QList<QQuickVisualDataModelCacheItem *>::iterator begin = m_cache.begin() + remove.cacheIndex; - QList<QQuickVisualDataModelCacheItem *>::iterator end = begin + remove.count; - m_cache.erase(begin, end); - } else { - for (; cacheIndex < remove.cacheIndex + remove.count - removedCache; ++cacheIndex) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - if (remove.inGroup(Compositor::Persisted) && cacheItem->objectRef == 0) { - destroy(cacheItem->object); - if (QDeclarativePackage *package = qobject_cast<QDeclarativePackage *>(cacheItem->object)) - emitDestroyingPackage(package); - else if (QQuickItem *item = qobject_cast<QQuickItem *>(cacheItem->object)) - emitDestroyingItem(item); - cacheItem->object = 0; - } - if (remove.groups() == cacheItem->groups && !cacheItem->isReferenced()) { - m_compositor.clearFlags(Compositor::Cache, cacheIndex, 1, Compositor::CacheFlag); - m_cache.removeAt(cacheIndex); - delete cacheItem; - --cacheIndex; - ++removedCache; - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - } else if (remove.groups() == cacheItem->groups) { - cacheItem->groups = 0; - for (int i = 1; i < m_groupCount; ++i) - cacheItem->index[i] = -1; - } else { - for (int i = 1; i < m_groupCount; ++i) { - if (remove.inGroup(i)) - cacheItem->index[i] = remove.index[i]; - } - cacheItem->groups &= ~remove.flags & Compositor::GroupMask; - } - } - } - } - - for (; cacheIndex < m_cache.count(); ++cacheIndex) { - QQuickVisualDataModelCacheItem *cacheItem = m_cache.at(cacheIndex); - if (!cacheItem->groups) - continue; - for (int i = 1; i < m_groupCount; ++i) - cacheItem->index[i] -= removed[i]; - } -} - -void QQuickVisualDataModelPrivate::itemsRemoved(const QVector<Compositor::Remove> &removes) -{ - QVarLengthArray<QVector<QDeclarativeChangeSet::Remove>, Compositor::MaximumGroupCount> translatedRemoves(m_groupCount); - itemsRemoved(removes, &translatedRemoves); - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - if (!m_delegate) - return; - - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->changeSet.apply(translatedRemoves.at(i)); -} - -void QQuickVisualDataModel::_q_itemsRemoved(int index, int count) -{ - Q_D(QQuickVisualDataModel); - if (count <= 0) - return; - - QVector<Compositor::Remove> removes; - d->m_compositor.listItemsRemoved(d->m_adaptorModel, index, count, &removes); - d->itemsRemoved(removes); - d->emitChanges(); -} - -void QQuickVisualDataModelPrivate::itemsMoved( - const QVector<Compositor::Remove> &removes, const QVector<Compositor::Insert> &inserts) -{ - QHash<int, QList<QQuickVisualDataModelCacheItem *> > movedItems; - - QVarLengthArray<QVector<QDeclarativeChangeSet::Remove>, Compositor::MaximumGroupCount> translatedRemoves(m_groupCount); - itemsRemoved(removes, &translatedRemoves, &movedItems); - - QVarLengthArray<QVector<QDeclarativeChangeSet::Insert>, Compositor::MaximumGroupCount> translatedInserts(m_groupCount); - itemsInserted(inserts, &translatedInserts, &movedItems); - Q_ASSERT(m_cache.count() == m_compositor.count(Compositor::Cache)); - Q_ASSERT(movedItems.isEmpty()); - if (!m_delegate) - return; - - for (int i = 1; i < m_groupCount; ++i) { - QQuickVisualDataGroupPrivate::get(m_groups[i])->changeSet.apply( - translatedRemoves.at(i), - translatedInserts.at(i)); - } -} - -void QQuickVisualDataModel::_q_itemsMoved(int from, int to, int count) -{ - Q_D(QQuickVisualDataModel); - if (count <= 0) - return; - - QVector<Compositor::Remove> removes; - QVector<Compositor::Insert> inserts; - d->m_compositor.listItemsMoved(d->m_adaptorModel, from, to, count, &removes, &inserts); - d->itemsMoved(removes, inserts); - d->emitChanges(); -} - -template <typename T> v8::Local<v8::Array> -QQuickVisualDataModelPrivate::buildChangeList(const QVector<T> &changes) -{ - v8::Local<v8::Array> indexes = v8::Array::New(changes.count()); - v8::Local<v8::String> indexKey = v8::String::New("index"); - v8::Local<v8::String> countKey = v8::String::New("count"); - v8::Local<v8::String> moveIdKey = v8::String::New("moveId"); - - for (int i = 0; i < changes.count(); ++i) { - v8::Local<v8::Object> object = v8::Object::New(); - object->Set(indexKey, v8::Integer::New(changes.at(i).index)); - object->Set(countKey, v8::Integer::New(changes.at(i).count)); - object->Set(moveIdKey, changes.at(i).moveId != -1 ? v8::Integer::New(changes.at(i).count) : v8::Undefined()); - indexes->Set(i, object); - } - return indexes; -} - -void QQuickVisualDataModelPrivate::emitModelUpdated(const QDeclarativeChangeSet &changeSet, bool reset) -{ - Q_Q(QQuickVisualDataModel); - emit q->modelUpdated(changeSet, reset); - if (changeSet.difference() != 0) - emit q->countChanged(); -} - -void QQuickVisualDataModelPrivate::emitChanges() -{ - if (m_transaction || !m_complete) - return; - - m_transaction = true; - QV8Engine *engine = QDeclarativeEnginePrivate::getV8Engine(m_context->engine()); - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->emitChanges(engine); - m_transaction = false; - - const bool reset = m_reset; - m_reset = false; - for (int i = 1; i < m_groupCount; ++i) - QQuickVisualDataGroupPrivate::get(m_groups[i])->emitModelUpdated(reset); - - foreach (QQuickVisualDataModelCacheItem *cacheItem, m_cache) { - if (cacheItem->object && cacheItem->attached) - cacheItem->attached->emitChanges(); - } -} - -void QQuickVisualDataModel::_q_modelReset(int oldCount, int newCount) -{ - Q_D(QQuickVisualDataModel); - if (!d->m_delegate) - return; - - QVector<Compositor::Remove> removes; - QVector<Compositor::Insert> inserts; - if (oldCount) - d->m_compositor.listItemsRemoved(d->m_adaptorModel, 0, oldCount, &removes); - if (newCount) - d->m_compositor.listItemsInserted(d->m_adaptorModel, 0, newCount, &inserts); - d->itemsMoved(removes, inserts); - d->m_reset = true; - d->emitChanges(); -} - -QQuickVisualDataModelAttached *QQuickVisualDataModel::qmlAttachedProperties(QObject *obj) -{ - return QQuickVisualDataModelAttached::properties(obj); -} - -//============================================================================ - -QQuickVisualDataModelCacheMetaType::QQuickVisualDataModelCacheMetaType( - QV8Engine *engine, QQuickVisualDataModel *model, const QStringList &groupNames) - : model(model) - , groupCount(groupNames.count() + 1) - , memberPropertyOffset(QQuickVisualDataModelAttached::staticMetaObject.propertyCount()) - , indexPropertyOffset(QQuickVisualDataModelAttached::staticMetaObject.propertyCount() + groupNames.count()) - , v8Engine(engine) - , metaObject(0) - , groupNames(groupNames) -{ - QMetaObjectBuilder builder; - builder.setFlags(QMetaObjectBuilder::DynamicMetaObject); - builder.setClassName(QQuickVisualDataModelAttached::staticMetaObject.className()); - builder.setSuperClass(&QQuickVisualDataModelAttached::staticMetaObject); - - v8::HandleScope handleScope; - v8::Context::Scope contextScope(engine->context()); - v8::Local<v8::FunctionTemplate> ft = v8::FunctionTemplate::New(); - ft->InstanceTemplate()->SetHasExternalResource(true); - ft->PrototypeTemplate()->SetAccessor(v8::String::New("model"), get_model); - ft->PrototypeTemplate()->SetAccessor(v8::String::New("groups"), get_groups, set_groups); - - int notifierId = 0; - for (int i = 0; i < groupNames.count(); ++i, ++notifierId) { - QString propertyName = QStringLiteral("in") + groupNames.at(i); - propertyName.replace(2, 1, propertyName.at(2).toUpper()); - builder.addSignal("__" + propertyName.toUtf8() + "Changed()"); - QMetaPropertyBuilder propertyBuilder = builder.addProperty( - propertyName.toUtf8(), "bool", notifierId); - propertyBuilder.setWritable(true); - - ft->PrototypeTemplate()->SetAccessor( - engine->toString(propertyName), get_member, set_member, v8::Int32::New(i + 1)); - } - for (int i = 0; i < groupNames.count(); ++i, ++notifierId) { - const QString propertyName = groupNames.at(i) + QStringLiteral("Index"); - builder.addSignal("__" + propertyName.toUtf8() + "Changed()"); - QMetaPropertyBuilder propertyBuilder = builder.addProperty( - propertyName.toUtf8(), "int", notifierId); - propertyBuilder.setWritable(true); - - ft->PrototypeTemplate()->SetAccessor( - engine->toString(propertyName), get_index, 0, v8::Int32::New(i + 1)); - } - - metaObject = builder.toMetaObject(); - - constructor = qPersistentNew<v8::Function>(ft->GetFunction()); -} - -QQuickVisualDataModelCacheMetaType::~QQuickVisualDataModelCacheMetaType() -{ - qFree(metaObject); - qPersistentDispose(constructor); -} - -int QQuickVisualDataModelCacheMetaType::parseGroups(const QStringList &groups) const -{ - int groupFlags = 0; - foreach (const QString &groupName, groups) { - int index = groupNames.indexOf(groupName); - if (index != -1) - groupFlags |= 2 << index; - } - return groupFlags; -} - -int QQuickVisualDataModelCacheMetaType::parseGroups(QV8Engine *engine, const v8::Local<v8::Value> &groups) const -{ - int groupFlags = 0; - if (groups->IsString()) { - const QString groupName = engine->toString(groups); - int index = groupNames.indexOf(groupName); - if (index != -1) - groupFlags |= 2 << index; - } else if (groups->IsArray()) { - v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(groups); - for (uint i = 0; i < array->Length(); ++i) { - const QString groupName = engine->toString(array->Get(i)); - int index = groupNames.indexOf(groupName); - if (index != -1) - groupFlags |= 2 << index; - } - } - return groupFlags; -} - -v8::Handle<v8::Value> QQuickVisualDataModelCacheMetaType::get_model( - v8::Local<v8::String>, const v8::AccessorInfo &info) -{ - QQuickVisualDataModelCacheItem *cacheItem = v8_resource_cast<QQuickVisualDataModelCacheItem>(info.This()); - if (!cacheItem) - V8THROW_ERROR("Not a valid VisualData object"); - if (!cacheItem->metaType->model) - return v8::Undefined(); - QObject *data = 0; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(cacheItem->metaType->model); - for (int i = 1; i < cacheItem->metaType->groupCount; ++i) { - if (cacheItem->groups & (1 << i)) { - Compositor::iterator it = model->m_compositor.find( - Compositor::Group(i), cacheItem->index[i]); - if (QQuickVisualAdaptorModel *list = it.list<QQuickVisualAdaptorModel>()) - data = list->data(it.modelIndex()); - break; - } - } - if (!data) - return v8::Undefined(); - return cacheItem->engine->newQObject(data); -} - -v8::Handle<v8::Value> QQuickVisualDataModelCacheMetaType::get_groups( - v8::Local<v8::String>, const v8::AccessorInfo &info) -{ - QQuickVisualDataModelCacheItem *cacheItem = v8_resource_cast<QQuickVisualDataModelCacheItem>(info.This()); - if (!cacheItem) - V8THROW_ERROR("Not a valid VisualData object"); - - QStringList groups; - for (int i = 1; i < cacheItem->metaType->groupCount; ++i) { - if (cacheItem->groups & (1 << i)) - groups.append(cacheItem->metaType->groupNames.at(i - 1)); - } - - return cacheItem->engine->fromVariant(groups); -} - -void QQuickVisualDataModelCacheMetaType::set_groups( - v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info) -{ - QQuickVisualDataModelCacheItem *cacheItem = v8_resource_cast<QQuickVisualDataModelCacheItem>(info.This()); - if (!cacheItem) - V8THROW_ERROR_SETTER("Not a valid VisualData object"); - - if (!cacheItem->metaType->model) - return; - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(cacheItem->metaType->model); - - const int groupFlags = model->m_cacheMetaType->parseGroups(cacheItem->engine, value); - for (int i = 1; i < cacheItem->metaType->groupCount; ++i) { - if (cacheItem->groups & (1 << i)) { - model->setGroups(Compositor::Group(i), cacheItem->index[i], 1, groupFlags); - break; - } - } -} - -v8::Handle<v8::Value> QQuickVisualDataModelCacheMetaType::get_member( - v8::Local<v8::String>, const v8::AccessorInfo &info) -{ - QQuickVisualDataModelCacheItem *cacheItem = v8_resource_cast<QQuickVisualDataModelCacheItem>(info.This()); - if (!cacheItem) - V8THROW_ERROR("Not a valid VisualData object"); - - return v8::Boolean::New(cacheItem->groups & (1 << info.Data()->Int32Value())); -} - -void QQuickVisualDataModelCacheMetaType::set_member( - v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info) -{ - QQuickVisualDataModelCacheItem *cacheItem = v8_resource_cast<QQuickVisualDataModelCacheItem>(info.This()); - if (!cacheItem) - V8THROW_ERROR_SETTER("Not a valid VisualData object"); - - if (!cacheItem->metaType->model) - return; - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(cacheItem->metaType->model); - - Compositor::Group group = Compositor::Group(info.Data()->Int32Value()); - const bool member = value->BooleanValue(); - const int groupFlag = (1 << group); - if (member == ((cacheItem->groups & groupFlag) != 0)) - return; - - for (int i = 1; i < cacheItem->metaType->groupCount; ++i) { - if (cacheItem->groups & (1 << i)) { - if (member) - model->addGroups(Compositor::Group(i), cacheItem->index[i], 1, groupFlag); - else - model->removeGroups(Compositor::Group(i), cacheItem->index[i], 1, groupFlag); - break; - } - } -} - -v8::Handle<v8::Value> QQuickVisualDataModelCacheMetaType::get_index( - v8::Local<v8::String>, const v8::AccessorInfo &info) -{ - QQuickVisualDataModelCacheItem *cacheItem = v8_resource_cast<QQuickVisualDataModelCacheItem>(info.This()); - if (!cacheItem) - V8THROW_ERROR("Not a valid VisualData object"); - - return v8::Integer::New(cacheItem->index[info.Data()->Int32Value()]); -} - - -//--------------------------------------------------------------------------- - -QQuickVisualDataModelCacheItem::~QQuickVisualDataModelCacheItem() -{ - Q_ASSERT(scriptRef == 0); - Q_ASSERT(objectRef == 0); - Q_ASSERT(!object); - if (incubationTask && metaType->model) - QQuickVisualDataModelPrivate::get(metaType->model)->releaseIncubator(incubationTask); - - metaType->release(); -} - -void QQuickVisualDataModelCacheItem::Dispose() -{ - --scriptRef; - if (isReferenced()) - return; - - if (metaType->model) { - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(metaType->model); - const int cacheIndex = model->m_cache.indexOf(this); - if (cacheIndex != -1) { - model->m_compositor.clearFlags(Compositor::Cache, cacheIndex, 1, Compositor::CacheFlag); - model->m_cache.removeAt(cacheIndex); - } - } - delete this; -} - -//--------------------------------------------------------------------------- - -QQuickVisualDataModelAttachedMetaObject::QQuickVisualDataModelAttachedMetaObject( - QQuickVisualDataModelAttached *attached, QQuickVisualDataModelCacheMetaType *metaType) - : attached(attached) - , metaType(metaType) -{ - metaType->addref(); - *static_cast<QMetaObject *>(this) = *metaType->metaObject; - QObjectPrivate::get(attached)->metaObject = this; -} - -QQuickVisualDataModelAttachedMetaObject::~QQuickVisualDataModelAttachedMetaObject() -{ - metaType->release(); -} - -int QQuickVisualDataModelAttachedMetaObject::metaCall(QMetaObject::Call call, int _id, void **arguments) -{ - if (call == QMetaObject::ReadProperty) { - if (_id >= metaType->indexPropertyOffset) { - Compositor::Group group = Compositor::Group(_id - metaType->indexPropertyOffset + 1); - *static_cast<int *>(arguments[0]) = attached->m_cacheItem->index[group]; - return -1; - } else if (_id >= metaType->memberPropertyOffset) { - Compositor::Group group = Compositor::Group(_id - metaType->memberPropertyOffset + 1); - *static_cast<bool *>(arguments[0]) = attached->m_cacheItem->groups & (1 << group); - return -1; - } - } else if (call == QMetaObject::WriteProperty) { - if (_id >= metaType->memberPropertyOffset) { - if (!metaType->model) - return -1; - Compositor::Group group = Compositor::Group(_id - metaType->memberPropertyOffset + 1); - const bool member = attached->m_cacheItem->groups & (1 << group); - if (member != *static_cast<bool *>(arguments[0])) { - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(metaType->model); - const int cacheIndex = model->m_cache.indexOf(attached->m_cacheItem); - if (member) - model->removeGroups(Compositor::Cache, cacheIndex, 1, (1 << group)); - else - model->addGroups(Compositor::Cache, cacheIndex, 1, (1 << group)); - } - return -1; - } - } - return attached->qt_metacall(call, _id, arguments); -} - -void QQuickVisualDataModelAttached::setCacheItem(QQuickVisualDataModelCacheItem *item) -{ - m_cacheItem = item; - for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i) - m_previousIndex[i] = m_cacheItem->index[i]; -} - -/*! - \qmlattachedproperty int QtQuick2::VisualDataModel::model - - This attached property holds the visual data model this delegate instance belongs to. - - It is attached to each instance of the delegate. -*/ - -QQuickVisualDataModel *QQuickVisualDataModelAttached::model() const -{ - return m_cacheItem ? m_cacheItem->metaType->model : 0; -} - -/*! - \qmlattachedproperty stringlist QtQuick2::VisualDataModel::groups - - This attached property holds the name of VisualDataGroups the item belongs to. - - It is attached to each instance of the delegate. -*/ - -QStringList QQuickVisualDataModelAttached::groups() const -{ - QStringList groups; - - if (!m_cacheItem) - return groups; - for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i) { - if (m_cacheItem->groups & (1 << i)) - groups.append(m_cacheItem->metaType->groupNames.at(i - 1)); - } - return groups; -} - -void QQuickVisualDataModelAttached::setGroups(const QStringList &groups) -{ - if (!m_cacheItem) - return; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_cacheItem->metaType->model); - - const int cacheIndex = model->m_cache.indexOf(m_cacheItem); - const int groupFlags = model->m_cacheMetaType->parseGroups(groups); - model->setGroups(Compositor::Cache, cacheIndex, 1, groupFlags); -} - -/*! - \qmlattachedproperty int QtQuick2::VisualDataModel::inItems - - This attached property holds whether the item belongs to the default \l items VisualDataGroup. - - Changing this property will add or remove the item from the items group. - - It is attached to each instance of the delegate. -*/ - -/*! - \qmlattachedproperty int QtQuick2::VisualDataModel::itemsIndex - - This attached property holds the index of the item in the default \l items VisualDataGroup. - - It is attached to each instance of the delegate. -*/ - -/*! - \qmlattachedproperty int QtQuick2::VisualDataModel::inPersistedItems - - This attached property holds whether the item belongs to the \l persistedItems VisualDataGroup. - - Changing this property will add or remove the item from the items group. Change with caution - as removing an item from the persistedItems group will destroy the current instance if it is - not referenced by a model. - - It is attached to each instance of the delegate. -*/ - -/*! - \qmlattachedproperty int QtQuick2::VisualDataModel::persistedItemsIndex - - This attached property holds the index of the item in the \l persistedItems VisualDataGroup. - - It is attached to each instance of the delegate. -*/ - -void QQuickVisualDataModelAttached::emitChanges() -{ - if (m_modelChanged) { - m_modelChanged = false; - emit modelChanged(); - } - - const int groupChanges = m_previousGroups ^ m_cacheItem->groups; - m_previousGroups = m_cacheItem->groups; - - int indexChanges = 0; - for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i) { - if (m_previousIndex[i] != m_cacheItem->index[i]) { - m_previousIndex[i] = m_cacheItem->index[i]; - indexChanges |= (1 << i); - } - } - - int notifierId = 0; - const QMetaObject *meta = metaObject(); - for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i, ++notifierId) { - if (groupChanges & (1 << i)) - QMetaObject::activate(this, meta, notifierId, 0); - } - for (int i = 1; i < m_cacheItem->metaType->groupCount; ++i, ++notifierId) { - if (indexChanges & (1 << i)) - QMetaObject::activate(this, meta, notifierId, 0); - } - - if (groupChanges) - emit groupsChanged(); -} - -//============================================================================ - -void QQuickVisualDataGroupPrivate::setModel(QQuickVisualDataModel *m, Compositor::Group g) -{ - Q_ASSERT(!model); - model = m; - group = g; -} - -void QQuickVisualDataGroupPrivate::emitChanges(QV8Engine *engine) -{ - Q_Q(QQuickVisualDataGroup); - static int idx = signalIndex("changed(QDeclarativeV8Handle,QDeclarativeV8Handle)"); - if (isSignalConnected(idx) && !changeSet.isEmpty()) { - v8::HandleScope handleScope; - v8::Context::Scope contextScope(engine->context()); - v8::Local<v8::Array> removed = QQuickVisualDataModelPrivate::buildChangeList(changeSet.removes()); - v8::Local<v8::Array> inserted = QQuickVisualDataModelPrivate::buildChangeList(changeSet.inserts()); - emit q->changed( - QDeclarativeV8Handle::fromHandle(removed), QDeclarativeV8Handle::fromHandle(inserted)); - } - if (changeSet.difference() != 0) - emit q->countChanged(); -} - -void QQuickVisualDataGroupPrivate::emitModelUpdated(bool reset) -{ - for (QQuickVisualDataGroupEmitterList::iterator it = emitters.begin(); it != emitters.end(); ++it) - it->emitModelUpdated(changeSet, reset); - changeSet.clear(); -} - -void QQuickVisualDataGroupPrivate::createdPackage(int index, QDeclarativePackage *package) -{ - for (QQuickVisualDataGroupEmitterList::iterator it = emitters.begin(); it != emitters.end(); ++it) - it->createdPackage(index, package); -} - -void QQuickVisualDataGroupPrivate::initPackage(int index, QDeclarativePackage *package) -{ - for (QQuickVisualDataGroupEmitterList::iterator it = emitters.begin(); it != emitters.end(); ++it) - it->initPackage(index, package); -} - -void QQuickVisualDataGroupPrivate::destroyingPackage(QDeclarativePackage *package) -{ - for (QQuickVisualDataGroupEmitterList::iterator it = emitters.begin(); it != emitters.end(); ++it) - it->destroyingPackage(package); -} - -/*! - \qmlclass VisualDataGroup QQuickVisualDataGroup - \inqmlmodule QtQuick 2 - \ingroup qml-working-with-data - \brief The VisualDataGroup encapsulates a filtered set of visual data items. - -*/ - -QQuickVisualDataGroup::QQuickVisualDataGroup(QObject *parent) - : QObject(*new QQuickVisualDataGroupPrivate, parent) -{ -} - -QQuickVisualDataGroup::QQuickVisualDataGroup( - const QString &name, QQuickVisualDataModel *model, int index, QObject *parent) - : QObject(*new QQuickVisualDataGroupPrivate, parent) -{ - Q_D(QQuickVisualDataGroup); - d->name = name; - d->setModel(model, Compositor::Group(index)); -} - -QQuickVisualDataGroup::~QQuickVisualDataGroup() -{ -} - -/*! - \qmlproperty string QtQuick2::VisualDataGroup::name - - This property holds the name of the group. - - Each group in a model must have a unique name starting with a lower case letter. -*/ - -QString QQuickVisualDataGroup::name() const -{ - Q_D(const QQuickVisualDataGroup); - return d->name; -} - -void QQuickVisualDataGroup::setName(const QString &name) -{ - Q_D(QQuickVisualDataGroup); - if (d->model) - return; - if (d->name != name) { - d->name = name; - emit nameChanged(); - } -} - -/*! - \qmlproperty int QtQuick2::VisualDataGroup::count - - This property holds the number of items in the group. -*/ - -int QQuickVisualDataGroup::count() const -{ - Q_D(const QQuickVisualDataGroup); - if (!d->model) - return 0; - return QQuickVisualDataModelPrivate::get(d->model)->m_compositor.count(d->group); -} - -/*! - \qmlproperty bool QtQuick2::VisualDataGroup::includeByDefault - - This property holds whether new items are assigned to this group by default. -*/ - -bool QQuickVisualDataGroup::defaultInclude() const -{ - Q_D(const QQuickVisualDataGroup); - return d->defaultInclude; -} - -void QQuickVisualDataGroup::setDefaultInclude(bool include) -{ - Q_D(QQuickVisualDataGroup); - if (d->defaultInclude != include) { - d->defaultInclude = include; - - if (d->model) { - if (include) - QQuickVisualDataModelPrivate::get(d->model)->m_compositor.setDefaultGroup(d->group); - else - QQuickVisualDataModelPrivate::get(d->model)->m_compositor.clearDefaultGroup(d->group); - } - emit defaultIncludeChanged(); - } -} - -/*! - \qmlmethod var QtQuick2::VisualDataGroup::get(int index) - - Returns a javascript object describing the item at \a index in the group. - - The returned object contains the same information that is available to a delegate from the - VisualDataModel attached as well as the model for that item. It has the properties: - - \list - \o \b model The model data of the item. This is the same as the model context property in - a delegate - \o \b groups A list the of names of groups the item is a member of. This property can be - written to change the item's membership. - \o \b inItems Whether the item belongs to the \l {QtQuick2::VisualDataModel::items}{items} group. - Writing to this property will add or remove the item from the group. - \o \b itemsIndex The index of the item within the \l {QtQuick2::VisualDataModel::items}{items} group. - \o \b {in\i{GroupName}} Whether the item belongs to the dynamic group \i groupName. Writing to - this property will add or remove the item from the group. - \o \b {\i{groupName}Index} The index of the item within the dynamic group \i groupName. - \endlist -*/ - -QDeclarativeV8Handle QQuickVisualDataGroup::get(int index) -{ - Q_D(QQuickVisualDataGroup); - if (!d->model) - return QDeclarativeV8Handle::fromHandle(v8::Undefined());; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - if (index < 0 || index >= model->m_compositor.count(d->group)) { - qmlInfo(this) << tr("get: index out of range"); - return QDeclarativeV8Handle::fromHandle(v8::Undefined()); - } - - Compositor::iterator it = model->m_compositor.find(d->group, index); - QQuickVisualDataModelCacheItem *cacheItem = it->inCache() - ? model->m_cache.at(it.cacheIndex) - : 0; - - if (!cacheItem) { - cacheItem = new QQuickVisualDataModelCacheItem(model->m_cacheMetaType); - for (int i = 0; i < model->m_groupCount; ++i) - cacheItem->index[i] = it.index[i]; - cacheItem->groups = it->flags & Compositor::GroupMask; - - model->m_cache.insert(it.cacheIndex, cacheItem); - model->m_compositor.setFlags(it, 1, Compositor::CacheFlag); - } - - ++cacheItem->scriptRef; - - v8::Local<v8::Object> rv = model->m_cacheMetaType->constructor->NewInstance(); - rv->SetExternalResource(cacheItem); - return QDeclarativeV8Handle::fromHandle(rv); -} - -/*! - \qmlmethod QtQuick2::VisualDataGroup::create(int index) - - Returns a reference to the instantiated item at \a index in the group. - - All items returned by create are added to the persistedItems group. Items in this - group remain instantiated when not referenced by any view. -*/ - -QObject *QQuickVisualDataGroup::create(int index) -{ - Q_D(QQuickVisualDataGroup); - if (!d->model) - return 0; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - if (index < 0 || index >= model->m_compositor.count(d->group)) { - qmlInfo(this) << tr("create: index out of range"); - return 0; - } - - QObject *object = model->object(d->group, index, false, false); - if (object) - model->addGroups(d->group, index, 1, Compositor::PersistedFlag); - return object; -} - -/*! - \qmlmethod QtQuick2::VisualDataGroup::remove(int index, int count) - - Removes \a count items starting at \a index from the group. -*/ - -void QQuickVisualDataGroup::remove(QDeclarativeV8Function *args) -{ - Q_D(QQuickVisualDataGroup); - if (!d->model) - return; - int index = -1; - int count = 1; - - if (args->Length() == 0) - return; - - int i = 0; - v8::Local<v8::Value> v = (*args)[i]; - if (!v->IsInt32()) - return; - index = v->Int32Value(); - - if (++i < args->Length()) { - v = (*args)[i]; - if (v->IsInt32()) - count = v->Int32Value(); - } - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - if (count < 0) { - qmlInfo(this) << tr("remove: invalid count"); - } else if (index < 0 || index + count > model->m_compositor.count(d->group)) { - qmlInfo(this) << tr("remove: index out of range"); - } else if (count > 0) { - model->removeGroups(d->group, index, count, 1 << d->group); - } -} - -bool QQuickVisualDataGroupPrivate::parseGroupArgs( - QDeclarativeV8Function *args, int *index, int *count, int *groups) const -{ - if (!model || !QQuickVisualDataModelPrivate::get(model)->m_cacheMetaType) - return false; - - if (args->Length() < 2) - return false; - - int i = 0; - v8::Local<v8::Value> v = (*args)[i]; - if (!v->IsInt32()) - return false; - *index = v->Int32Value(); - - v = (*args)[++i]; - if (v->IsInt32()) { - *count = v->Int32Value(); - - if (++i == args->Length()) - return false; - v = (*args)[i]; - } - - *groups = QQuickVisualDataModelPrivate::get(model)->m_cacheMetaType->parseGroups(args->engine(), v); - - return true; -} - -/*! - \qmlmethod QtQuick2::VisualDataGroup::addGroups(int index, int count, stringlist groups) - - Adds \a count items starting at \a index to \a groups. -*/ - -void QQuickVisualDataGroup::addGroups(QDeclarativeV8Function *args) -{ - Q_D(QQuickVisualDataGroup); - int index = -1; - int count = 1; - int groups = 0; - - if (!d->parseGroupArgs(args, &index, &count, &groups)) - return; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - if (count < 0) { - qmlInfo(this) << tr("addGroups: invalid count"); - } else if (index < 0 || index + count > model->m_compositor.count(d->group)) { - qmlInfo(this) << tr("addGroups: index out of range"); - } else if (count > 0 && groups) { - model->addGroups(d->group, index, count, groups); - } -} - -/*! - \qmlmethod QtQuick2::VisualDataGroup::removeGroups(int index, int count, stringlist groups) - - Removes \a count items starting at \a index from \a groups. -*/ - -void QQuickVisualDataGroup::removeGroups(QDeclarativeV8Function *args) -{ - Q_D(QQuickVisualDataGroup); - int index = -1; - int count = 1; - int groups = 0; - - if (!d->parseGroupArgs(args, &index, &count, &groups)) - return; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - if (count < 0) { - qmlInfo(this) << tr("removeGroups: invalid count"); - } else if (index < 0 || index + count > model->m_compositor.count(d->group)) { - qmlInfo(this) << tr("removeGroups: index out of range"); - } else if (count > 0 && groups) { - model->removeGroups(d->group, index, count, groups); - } -} - -/*! - \qmlmethod QtQuick2::VisualDataGroup::setGroups(int index, int count, stringlist groups) - - Sets the \a groups \a count items starting at \a index belong to. -*/ - -void QQuickVisualDataGroup::setGroups(QDeclarativeV8Function *args) -{ - Q_D(QQuickVisualDataGroup); - int index = -1; - int count = 1; - int groups = 0; - - if (!d->parseGroupArgs(args, &index, &count, &groups)) - return; - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - if (count < 0) { - qmlInfo(this) << tr("setGroups: invalid count"); - } else if (index < 0 || index + count > model->m_compositor.count(d->group)) { - qmlInfo(this) << tr("setGroups: index out of range"); - } else if (count > 0) { - model->setGroups(d->group, index, count, groups); - } -} - -/*! - \qmlmethod QtQuick2::VisualDataGroup::setGroups(int index, int count, stringlist groups) - - Sets the \a groups \a count items starting at \a index belong to. -*/ - -/*! - \qmlmethod QtQuick2::VisualDataGroup::move(int from, int to, int count) - - Moves \a count at \a from in a group \a to a new position. -*/ - -void QQuickVisualDataGroup::move(QDeclarativeV8Function *args) -{ - Q_D(QQuickVisualDataGroup); - - if (args->Length() < 2) - return; - - Compositor::Group fromGroup = d->group; - Compositor::Group toGroup = d->group; - int from = -1; - int to = -1; - int count = 1; - - int i = 0; - v8::Local<v8::Value> v = (*args)[i]; - if (QQuickVisualDataGroup *group = qobject_cast<QQuickVisualDataGroup *>(args->engine()->toQObject(v))) { - QQuickVisualDataGroupPrivate *g_d = QQuickVisualDataGroupPrivate::get(group); - if (g_d->model != d->model) - return; - fromGroup = g_d->group; - v = (*args)[++i]; - } - - if (!v->IsInt32()) - return; - from = v->Int32Value(); - - if (++i == args->Length()) - return; - v = (*args)[i]; - - if (QQuickVisualDataGroup *group = qobject_cast<QQuickVisualDataGroup *>(args->engine()->toQObject(v))) { - QQuickVisualDataGroupPrivate *g_d = QQuickVisualDataGroupPrivate::get(group); - if (g_d->model != d->model) - return; - toGroup = g_d->group; - - if (++i == args->Length()) - return; - v = (*args)[i]; - } - - if (!v->IsInt32()) - return; - to = v->Int32Value(); - - if (++i < args->Length()) { - v = (*args)[i]; - if (v->IsInt32()) - count = v->Int32Value(); - } - - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(d->model); - - if (count < 0) { - qmlInfo(this) << tr("move: invalid count"); - } else if (from < 0 || from + count > model->m_compositor.count(fromGroup)) { - qmlInfo(this) << tr("move: from index out of range"); - } else if (!model->m_compositor.verifyMoveTo(fromGroup, from, toGroup, to, count)) { - qmlInfo(this) << tr("move: to index out of range"); - } else if (count > 0) { - QVector<Compositor::Remove> removes; - QVector<Compositor::Insert> inserts; - - model->m_compositor.move(fromGroup, from, toGroup, to, count, &removes, &inserts); - model->itemsMoved(removes, inserts); - model->emitChanges(); - } - -} - -/*! - \qmlsignal QtQuick2::VisualDataGroup::onChanged(array removed, array inserted) - - This handler is called when items have been removed from or inserted into the group. - - Each object in the \a removed and \a inserted arrays has two values; the \e index of the first - item inserted or removed and a \e count of the number of consecutive items inserted or removed. - - Each index is adjusted for previous changes with all removed items preceding any inserted - items. -*/ - -//============================================================================ - -QQuickVisualPartsModel::QQuickVisualPartsModel(QQuickVisualDataModel *model, const QString &part, QObject *parent) - : QQuickVisualModel(*new QObjectPrivate, parent) - , m_model(model) - , m_part(part) - , m_compositorGroup(Compositor::Cache) - , m_inheritGroup(true) -{ - QQuickVisualDataModelPrivate *d = QQuickVisualDataModelPrivate::get(m_model); - if (d->m_cacheMetaType) { - QQuickVisualDataGroupPrivate::get(d->m_groups[1])->emitters.insert(this); - m_compositorGroup = Compositor::Default; - } else { - d->m_pendingParts.insert(this); - } -} - -QQuickVisualPartsModel::~QQuickVisualPartsModel() -{ -} - -QString QQuickVisualPartsModel::filterGroup() const -{ - if (m_inheritGroup) - return m_model->filterGroup(); - return m_filterGroup; -} - -void QQuickVisualPartsModel::setFilterGroup(const QString &group) -{ - if (QQuickVisualDataModelPrivate::get(m_model)->m_transaction) { - qmlInfo(this) << tr("The group of a VisualDataModel cannot be changed within onChanged"); - return; - } - - if (m_filterGroup != group || m_inheritGroup) { - m_filterGroup = group; - m_inheritGroup = false; - updateFilterGroup(); - - emit filterGroupChanged(); - } -} - -void QQuickVisualPartsModel::resetFilterGroup() -{ - if (!m_inheritGroup) { - m_inheritGroup = true; - updateFilterGroup(); - emit filterGroupChanged(); - } -} - -void QQuickVisualPartsModel::updateFilterGroup() -{ - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_model); - if (!model->m_cacheMetaType) - return; - - if (m_inheritGroup) { - if (m_filterGroup == model->m_filterGroup) - return; - m_filterGroup = model->m_filterGroup; - } - - QDeclarativeListCompositor::Group previousGroup = m_compositorGroup; - m_compositorGroup = Compositor::Default; - QQuickVisualDataGroupPrivate::get(model->m_groups[Compositor::Default])->emitters.insert(this); - for (int i = 1; i < model->m_groupCount; ++i) { - if (m_filterGroup == model->m_cacheMetaType->groupNames.at(i - 1)) { - m_compositorGroup = Compositor::Group(i); - break; - } - } - - QQuickVisualDataGroupPrivate::get(model->m_groups[m_compositorGroup])->emitters.insert(this); - if (m_compositorGroup != previousGroup) { - QVector<QDeclarativeChangeSet::Remove> removes; - QVector<QDeclarativeChangeSet::Insert> inserts; - model->m_compositor.transition(previousGroup, m_compositorGroup, &removes, &inserts); - - QDeclarativeChangeSet changeSet; - changeSet.apply(removes, inserts); - if (!changeSet.isEmpty()) - emit modelUpdated(changeSet, false); - - if (changeSet.difference() != 0) - emit countChanged(); - } -} - -void QQuickVisualPartsModel::updateFilterGroup( - Compositor::Group group, const QDeclarativeChangeSet &changeSet) -{ - if (!m_inheritGroup) - return; - - m_compositorGroup = group; - QQuickVisualDataGroupPrivate::get(QQuickVisualDataModelPrivate::get(m_model)->m_groups[m_compositorGroup])->emitters.insert(this); - - if (!changeSet.isEmpty()) - emit modelUpdated(changeSet, false); - - if (changeSet.difference() != 0) - emit countChanged(); - - emit filterGroupChanged(); -} - -int QQuickVisualPartsModel::count() const -{ - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_model); - return model->m_delegate - ? model->m_compositor.count(m_compositorGroup) - : 0; -} - -bool QQuickVisualPartsModel::isValid() const -{ - return m_model->isValid(); -} - -QQuickItem *QQuickVisualPartsModel::item(int index, bool asynchronous) -{ - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_model); - - if (!model->m_delegate || index < 0 || index >= model->m_compositor.count(m_compositorGroup)) { - qWarning() << "VisualDataModel::item: index out range" << index << model->m_compositor.count(m_compositorGroup); - return 0; - } - - QObject *object = model->object(m_compositorGroup, index, asynchronous, true); - - if (QDeclarativePackage *package = qobject_cast<QDeclarativePackage *>(object)) { - QObject *part = package->part(m_part); - if (!part) - return 0; - if (QQuickItem *item = qobject_cast<QQuickItem *>(part)) { - m_packaged.insertMulti(item, package); - return item; - } - } - - model->release(object); - if (!model->m_delegateValidated) { - if (object) - qmlInfo(model->m_delegate) << tr("Delegate component must be Package type."); - model->m_delegateValidated = true; - } - - return 0; -} - -QQuickVisualModel::ReleaseFlags QQuickVisualPartsModel::release(QQuickItem *item) -{ - QQuickVisualModel::ReleaseFlags flags = 0; - - QHash<QObject *, QDeclarativePackage *>::iterator it = m_packaged.find(item); - if (it != m_packaged.end()) { - QDeclarativePackage *package = *it; - QDeclarative_setParent_noEvent(item, package); - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_model); - flags = model->release(package); - m_packaged.erase(it); - if (!m_packaged.contains(item)) - flags &= ~Referenced; - if (flags & Destroyed) { - QQuickVisualDataModelPrivate::get(m_model)->emitDestroyingPackage(package); - item->setParentItem(0); - } - } - return flags; -} - -QString QQuickVisualPartsModel::stringValue(int index, const QString &role) -{ - return QQuickVisualDataModelPrivate::get(m_model)->stringValue(m_compositorGroup, index, role); -} - -void QQuickVisualPartsModel::setWatchedRoles(QList<QByteArray> roles) -{ - QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_model); - model->m_adaptorModel->replaceWatchedRoles(m_watchedRoles, roles); - m_watchedRoles = roles; -} - -int QQuickVisualPartsModel::indexOf(QQuickItem *item, QObject *) const -{ - QHash<QObject *, QDeclarativePackage *>::const_iterator it = m_packaged.find(item); - if (it != m_packaged.end()) { - const QQuickVisualDataModelPrivate *model = QQuickVisualDataModelPrivate::get(m_model); - const int cacheIndex = model->cacheIndexOf(*it); - return cacheIndex != -1 - ? model->m_cache.at(cacheIndex)->index[m_compositorGroup] - : -1; - } - return -1; -} - -void QQuickVisualPartsModel::createdPackage(int index, QDeclarativePackage *package) -{ - if (QQuickItem *item = qobject_cast<QQuickItem *>(package->part(m_part))) - emit createdItem(index, item); -} - -void QQuickVisualPartsModel::initPackage(int index, QDeclarativePackage *package) -{ - if (QQuickItem *item = qobject_cast<QQuickItem *>(package->part(m_part))) - emit initItem(index, item); -} - -void QQuickVisualPartsModel::destroyingPackage(QDeclarativePackage *package) -{ - if (QQuickItem *item = qobject_cast<QQuickItem *>(package->part(m_part))) { - Q_ASSERT(!m_packaged.contains(item)); - emit destroyingItem(item); - } -} - -void QQuickVisualPartsModel::emitModelUpdated(const QDeclarativeChangeSet &changeSet, bool reset) -{ - emit modelUpdated(changeSet, reset); - if (changeSet.difference() != 0) - emit countChanged(); -} - - -QT_END_NAMESPACE - -#include <qquickvisualdatamodel.moc> |