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Diffstat (limited to 'src/qml/util/qqmladaptormodel.cpp')
| -rw-r--r-- | src/qml/util/qqmladaptormodel.cpp | 977 |
1 files changed, 977 insertions, 0 deletions
diff --git a/src/qml/util/qqmladaptormodel.cpp b/src/qml/util/qqmladaptormodel.cpp new file mode 100644 index 0000000000..5b6ef79338 --- /dev/null +++ b/src/qml/util/qqmladaptormodel.cpp @@ -0,0 +1,977 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qqmladaptormodel_p.h" + +#include <private/qqmldelegatemodel_p_p.h> +#include <private/qmetaobjectbuilder_p.h> +#include <private/qqmlproperty_p.h> +#include <private/qv8engine_p.h> + +QT_BEGIN_NAMESPACE + +class QQmlAdaptorModelEngineData : public QV8Engine::Deletable +{ +public: + enum + { + Index, + ModelData, + HasModelChildren, + StringCount + }; + + QQmlAdaptorModelEngineData(QV8Engine *engine); + ~QQmlAdaptorModelEngineData(); + + v8::Local<v8::String> index() { return strings->Get(Index)->ToString(); } + v8::Local<v8::String> modelData() { return strings->Get(ModelData)->ToString(); } + v8::Local<v8::String> hasModelChildren() { return strings->Get(HasModelChildren)->ToString(); } + + v8::Persistent<v8::Function> constructorListItem; + v8::Persistent<v8::Array> strings; +}; + +V8_DEFINE_EXTENSION(QQmlAdaptorModelEngineData, engineData) + +static v8::Handle<v8::Value> get_index(v8::Local<v8::String>, const v8::AccessorInfo &info) +{ + QQmlDelegateModelItem *data = v8_resource_cast<QQmlDelegateModelItem>(info.This()); + V8ASSERT_TYPE(data, "Not a valid VisualData object"); + + return v8::Int32::New(data->index); +} + +template <typename T, typename M> static void setModelDataType(QMetaObjectBuilder *builder, M *metaType) +{ + builder->setFlags(QMetaObjectBuilder::DynamicMetaObject); + builder->setClassName(T::staticMetaObject.className()); + builder->setSuperClass(&T::staticMetaObject); + metaType->propertyOffset = T::staticMetaObject.propertyCount(); + metaType->signalOffset = T::staticMetaObject.methodCount(); +} + +static void addProperty(QMetaObjectBuilder *builder, int propertyId, const QByteArray &propertyName, const QByteArray &propertyType) +{ + builder->addSignal("__" + QByteArray::number(propertyId) + "()"); + QMetaPropertyBuilder property = builder->addProperty( + propertyName, propertyType, propertyId); + property.setWritable(true); +} + +class VDMModelDelegateDataType; + +class QQmlDMCachedModelData : public QQmlDelegateModelItem +{ +public: + QQmlDMCachedModelData( + QQmlDelegateModelItemMetaType *metaType, + VDMModelDelegateDataType *dataType, + int index); + + int metaCall(QMetaObject::Call call, int id, void **arguments); + + virtual QVariant value(int role) const = 0; + virtual void setValue(int role, const QVariant &value) = 0; + + void setValue(const QString &role, const QVariant &value); + bool resolveIndex(const QQmlAdaptorModel &model, int idx); + + static v8::Handle<v8::Value> get_property(v8::Local<v8::String>, const v8::AccessorInfo &info); + static void set_property( + v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info); + + VDMModelDelegateDataType *type; + QVector<QVariant> cachedData; +}; + +class VDMModelDelegateDataType + : public QQmlRefCount + , public QQmlAdaptorModel::Accessors + , public QAbstractDynamicMetaObject +{ +public: + VDMModelDelegateDataType(QQmlAdaptorModel *model) + : model(model) + , metaObject(0) + , propertyCache(0) + , propertyOffset(0) + , signalOffset(0) + , hasModelData(false) + { + } + + ~VDMModelDelegateDataType() + { + if (propertyCache) + propertyCache->release(); + free(metaObject); + + qPersistentDispose(constructor); + } + + bool notify( + const QQmlAdaptorModel &, + const QList<QQmlDelegateModelItem *> &items, + int index, + int count, + const QVector<int> &roles) const + { + bool changed = roles.isEmpty() && !watchedRoles.isEmpty(); + if (!changed && !watchedRoles.isEmpty() && watchedRoleIds.isEmpty()) { + QList<int> roleIds; + foreach (const QByteArray &r, watchedRoles) { + QHash<QByteArray, int>::const_iterator it = roleNames.find(r); + if (it != roleNames.end()) + roleIds << it.value(); + } + const_cast<VDMModelDelegateDataType *>(this)->watchedRoleIds = roleIds; + } + + QVector<int> signalIndexes; + for (int i = 0; i < roles.count(); ++i) { + const int role = roles.at(i); + if (!changed && watchedRoleIds.contains(role)) + changed = true; + + int propertyId = propertyRoles.indexOf(role); + if (propertyId != -1) + signalIndexes.append(propertyId + signalOffset); + } + if (roles.isEmpty()) { + for (int propertyId = 0; propertyId < propertyRoles.count(); ++propertyId) + signalIndexes.append(propertyId + signalOffset); + } + + for (int i = 0, c = items.count(); i < c; ++i) { + QQmlDelegateModelItem *item = items.at(i); + const int idx = item->modelIndex(); + if (idx >= index && idx < index + count) { + for (int i = 0; i < signalIndexes.count(); ++i) + QMetaObject::activate(item, signalIndexes.at(i), 0); + } + } + return changed; + } + + void replaceWatchedRoles( + QQmlAdaptorModel &, + const QList<QByteArray> &oldRoles, + const QList<QByteArray> &newRoles) const + { + VDMModelDelegateDataType *dataType = const_cast<VDMModelDelegateDataType *>(this); + + dataType->watchedRoleIds.clear(); + foreach (const QByteArray &oldRole, oldRoles) + dataType->watchedRoles.removeOne(oldRole); + dataType->watchedRoles += newRoles; + } + + void initializeConstructor(QQmlAdaptorModelEngineData *const data) + { + constructor = qPersistentNew(v8::ObjectTemplate::New()); + constructor->SetHasExternalResource(true); + constructor->SetAccessor(data->index(), get_index); + + typedef QHash<QByteArray, int>::const_iterator iterator; + for (iterator it = roleNames.constBegin(), end = roleNames.constEnd(); it != end; ++it) { + const int propertyId = propertyRoles.indexOf(it.value()); + const QByteArray &propertyName = it.key(); + + constructor->SetAccessor( + v8::String::New(propertyName.constData(), propertyName.length()), + QQmlDMCachedModelData::get_property, + QQmlDMCachedModelData::set_property, + v8::Int32::New(propertyId)); + } + } + + // QAbstractDynamicMetaObject + + void objectDestroyed(QObject *) + { + release(); + } + + int metaCall(QObject *object, QMetaObject::Call call, int id, void **arguments) + { + return static_cast<QQmlDMCachedModelData *>(object)->metaCall(call, id, arguments); + } + + v8::Persistent<v8::ObjectTemplate> constructor; + QList<int> propertyRoles; + QList<int> watchedRoleIds; + QList<QByteArray> watchedRoles; + QHash<QByteArray, int> roleNames; + QQmlAdaptorModel *model; + QMetaObject *metaObject; + QQmlPropertyCache *propertyCache; + int propertyOffset; + int signalOffset; + bool hasModelData; +}; + +QQmlDMCachedModelData::QQmlDMCachedModelData( + QQmlDelegateModelItemMetaType *metaType, VDMModelDelegateDataType *dataType, int index) + : QQmlDelegateModelItem(metaType, index) + , type(dataType) +{ + if (index == -1) + cachedData.resize(type->hasModelData ? 1 : type->propertyRoles.count()); + + QObjectPrivate::get(this)->metaObject = type; + + type->addref(); + + QQmlData *qmldata = QQmlData::get(this, true); + qmldata->propertyCache = dataType->propertyCache; + qmldata->propertyCache->addref(); +} + +int QQmlDMCachedModelData::metaCall(QMetaObject::Call call, int id, void **arguments) +{ + if (call == QMetaObject::ReadProperty && id >= type->propertyOffset) { + const int propertyIndex = id - type->propertyOffset; + if (index == -1) { + if (!cachedData.isEmpty()) { + *static_cast<QVariant *>(arguments[0]) = cachedData.at( + type->hasModelData ? 0 : propertyIndex); + } + } else if (*type->model) { + *static_cast<QVariant *>(arguments[0]) = value(type->propertyRoles.at(propertyIndex)); + } + return -1; + } else if (call == QMetaObject::WriteProperty && id >= type->propertyOffset) { + const int propertyIndex = id - type->propertyOffset; + if (index == -1) { + const QMetaObject *meta = metaObject(); + if (cachedData.count() > 1) { + cachedData[propertyIndex] = *static_cast<QVariant *>(arguments[0]); + QMetaObject::activate(this, meta, propertyIndex, 0); + } else if (cachedData.count() == 1) { + cachedData[0] = *static_cast<QVariant *>(arguments[0]); + QMetaObject::activate(this, meta, 0, 0); + QMetaObject::activate(this, meta, 1, 0); + } + } else if (*type->model) { + setValue(type->propertyRoles.at(propertyIndex), *static_cast<QVariant *>(arguments[0])); + } + return -1; + } else { + return qt_metacall(call, id, arguments); + } +} + +void QQmlDMCachedModelData::setValue(const QString &role, const QVariant &value) +{ + QHash<QByteArray, int>::iterator it = type->roleNames.find(role.toUtf8()); + if (it != type->roleNames.end()) { + for (int i = 0; i < type->propertyRoles.count(); ++i) { + if (type->propertyRoles.at(i) == *it) { + cachedData[i] = value; + return; + } + } + } +} + +bool QQmlDMCachedModelData::resolveIndex(const QQmlAdaptorModel &, int idx) +{ + if (index == -1) { + Q_ASSERT(idx >= 0); + index = idx; + cachedData.clear(); + emit modelIndexChanged(); + const QMetaObject *meta = metaObject(); + const int propertyCount = type->propertyRoles.count(); + for (int i = 0; i < propertyCount; ++i) + QMetaObject::activate(this, meta, i, 0); + return true; + } else { + return false; + } +} + +v8::Handle<v8::Value> QQmlDMCachedModelData::get_property( + v8::Local<v8::String>, const v8::AccessorInfo &info) +{ + QQmlDelegateModelItem *data = v8_resource_cast<QQmlDelegateModelItem>(info.This()); + V8ASSERT_TYPE(data, "Not a valid VisualData object"); + + QQmlDMCachedModelData *modelData = static_cast<QQmlDMCachedModelData *>(data); + const int propertyId = info.Data()->Int32Value(); + if (data->index == -1) { + if (!modelData->cachedData.isEmpty()) { + return data->engine->fromVariant( + modelData->cachedData.at(modelData->type->hasModelData ? 0 : propertyId)); + } + } else if (*modelData->type->model) { + return data->engine->fromVariant( + modelData->value(modelData->type->propertyRoles.at(propertyId))); + } + return v8::Undefined(); +} + +void QQmlDMCachedModelData::set_property( + v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info) +{ + QQmlDelegateModelItem *data = v8_resource_cast<QQmlDelegateModelItem>(info.This()); + V8ASSERT_TYPE_SETTER(data, "Not a valid VisualData object"); + + const int propertyId = info.Data()->Int32Value(); + if (data->index == -1) { + QQmlDMCachedModelData *modelData = static_cast<QQmlDMCachedModelData *>(data); + if (!modelData->cachedData.isEmpty()) { + if (modelData->cachedData.count() > 1) { + modelData->cachedData[propertyId] = data->engine->toVariant(value, QVariant::Invalid); + QMetaObject::activate(data, data->metaObject(), propertyId, 0); + } else if (modelData->cachedData.count() == 1) { + modelData->cachedData[0] = data->engine->toVariant(value, QVariant::Invalid); + QMetaObject::activate(data, data->metaObject(), 0, 0); + QMetaObject::activate(data, data->metaObject(), 1, 0); + } + } + } +} + +//----------------------------------------------------------------- +// QAbstractItemModel +//----------------------------------------------------------------- + +class QQmlDMAbstractItemModelData : public QQmlDMCachedModelData +{ + Q_OBJECT + Q_PROPERTY(bool hasModelChildren READ hasModelChildren CONSTANT) +public: + QQmlDMAbstractItemModelData( + QQmlDelegateModelItemMetaType *metaType, + VDMModelDelegateDataType *dataType, + int index) + : QQmlDMCachedModelData(metaType, dataType, index) + { + } + + bool hasModelChildren() const + { + if (index >= 0 && *type->model) { + const QAbstractItemModel * const model = type->model->aim(); + return model->hasChildren(model->index(index, 0, type->model->rootIndex)); + } else { + return false; + } + } + + QVariant value(int role) const + { + return type->model->aim()->index(index, 0, type->model->rootIndex).data(role); + } + + void setValue(int role, const QVariant &value) + { + type->model->aim()->setData( + type->model->aim()->index(index, 0, type->model->rootIndex), value, role); + } + + v8::Handle<v8::Value> get() + { + if (type->constructor.IsEmpty()) { + QQmlAdaptorModelEngineData * const data = engineData(engine); + v8::HandleScope handleScope; + v8::Context::Scope contextScope(engine->context()); + type->initializeConstructor(data); + type->constructor->SetAccessor(data->hasModelChildren(), get_hasModelChildren); + } + v8::Local<v8::Object> data = type->constructor->NewInstance(); + data->SetExternalResource(this); + ++scriptRef; + return data; + } + + static v8::Handle<v8::Value> get_hasModelChildren(v8::Local<v8::String>, const v8::AccessorInfo &info) + { + QQmlDelegateModelItem *data = v8_resource_cast<QQmlDelegateModelItem>(info.This()); + V8ASSERT_TYPE(data, "Not a valid VisualData object"); + + const QQmlAdaptorModel *const model = static_cast<QQmlDMCachedModelData *>(data)->type->model; + if (data->index >= 0 && *model) { + const QAbstractItemModel * const aim = model->aim(); + return v8::Boolean::New(aim->hasChildren(aim->index(data->index, 0, model->rootIndex))); + } else { + return v8::Boolean::New(false); + } + } +}; + +class VDMAbstractItemModelDataType : public VDMModelDelegateDataType +{ +public: + VDMAbstractItemModelDataType(QQmlAdaptorModel *model) + : VDMModelDelegateDataType(model) + { + } + + int count(const QQmlAdaptorModel &model) const + { + return model.aim()->rowCount(model.rootIndex); + } + + void cleanup(QQmlAdaptorModel &model, QQmlDelegateModel *vdm) const + { + QAbstractItemModel * const aim = model.aim(); + if (aim && vdm) { + QObject::disconnect(aim, SIGNAL(rowsInserted(QModelIndex,int,int)), + vdm, SLOT(_q_rowsInserted(QModelIndex,int,int))); + QObject::disconnect(aim, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), + vdm, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int))); + QObject::disconnect(aim, SIGNAL(rowsRemoved(QModelIndex,int,int)), + vdm, SLOT(_q_rowsRemoved(QModelIndex,int,int))); + QObject::disconnect(aim, SIGNAL(dataChanged(QModelIndex,QModelIndex,QVector<int>)), + vdm, SLOT(_q_dataChanged(QModelIndex,QModelIndex,QVector<int>))); + QObject::disconnect(aim, SIGNAL(rowsMoved(QModelIndex,int,int,QModelIndex,int)), + vdm, SLOT(_q_rowsMoved(QModelIndex,int,int,QModelIndex,int))); + QObject::disconnect(aim, SIGNAL(modelReset()), + vdm, SLOT(_q_modelReset())); + QObject::disconnect(aim, SIGNAL(layoutChanged()), + vdm, SLOT(_q_layoutChanged())); + } + + const_cast<VDMAbstractItemModelDataType *>(this)->release(); + } + + QVariant value(const QQmlAdaptorModel &model, int index, const QString &role) const + { + QHash<QByteArray, int>::const_iterator it = roleNames.find(role.toUtf8()); + if (it != roleNames.end()) { + return model.aim()->index(index, 0, model.rootIndex).data(*it); + } else if (role == QLatin1String("hasModelChildren")) { + return QVariant(model.aim()->hasChildren(model.aim()->index(index, 0, model.rootIndex))); + } else { + return QVariant(); + } + } + + QVariant parentModelIndex(const QQmlAdaptorModel &model) const + { + return model + ? QVariant::fromValue(model.aim()->parent(model.rootIndex)) + : QVariant(); + } + + QVariant modelIndex(const QQmlAdaptorModel &model, int index) const + { + return model + ? QVariant::fromValue(model.aim()->index(index, 0, model.rootIndex)) + : QVariant(); + } + + bool canFetchMore(const QQmlAdaptorModel &model) const + { + return model && model.aim()->canFetchMore(model.rootIndex); + } + + void fetchMore(QQmlAdaptorModel &model) const + { + if (model) + model.aim()->fetchMore(model.rootIndex); + } + + QQmlDelegateModelItem *createItem( + QQmlAdaptorModel &model, + QQmlDelegateModelItemMetaType *metaType, + QQmlEngine *engine, + int index) const + { + VDMAbstractItemModelDataType *dataType = const_cast<VDMAbstractItemModelDataType *>(this); + if (!metaObject) + dataType->initializeMetaType(model, engine); + return new QQmlDMAbstractItemModelData(metaType, dataType, index); + } + + void initializeMetaType(QQmlAdaptorModel &model, QQmlEngine *engine) + { + QMetaObjectBuilder builder; + setModelDataType<QQmlDMAbstractItemModelData>(&builder, this); + + const QByteArray propertyType = QByteArrayLiteral("QVariant"); + const QHash<int, QByteArray> names = model.aim()->roleNames(); + for (QHash<int, QByteArray>::const_iterator it = names.begin(); it != names.end(); ++it) { + const int propertyId = propertyRoles.count(); + propertyRoles.append(it.key()); + roleNames.insert(it.value(), it.key()); + addProperty(&builder, propertyId, it.value(), propertyType); + } + if (propertyRoles.count() == 1) { + hasModelData = true; + const int role = names.begin().key(); + const QByteArray propertyName = QByteArrayLiteral("modelData"); + + propertyRoles.append(role); + roleNames.insert(propertyName, role); + addProperty(&builder, 1, propertyName, propertyType); + } + + metaObject = builder.toMetaObject(); + *static_cast<QMetaObject *>(this) = *metaObject; + propertyCache = new QQmlPropertyCache(engine, metaObject); + } +}; + +//----------------------------------------------------------------- +// QQmlListAccessor +//----------------------------------------------------------------- + +class QQmlDMListAccessorData : public QQmlDelegateModelItem +{ + Q_OBJECT + Q_PROPERTY(QVariant modelData READ modelData WRITE setModelData NOTIFY modelDataChanged) +public: + QQmlDMListAccessorData(QQmlDelegateModelItemMetaType *metaType, int index, const QVariant &value) + : QQmlDelegateModelItem(metaType, index) + , cachedData(value) + { + } + + QVariant modelData() const + { + return cachedData; + } + + void setModelData(const QVariant &data) + { + if (index == -1 && data != cachedData) { + cachedData = data; + emit modelDataChanged(); + } + } + + static v8::Handle<v8::Value> get_modelData(v8::Local<v8::String>, const v8::AccessorInfo &info) + { + QQmlDelegateModelItem *data = v8_resource_cast<QQmlDelegateModelItem>(info.This()); + V8ASSERT_TYPE(data, "Not a valid VisualData object"); + + return data->engine->fromVariant(static_cast<QQmlDMListAccessorData *>(data)->cachedData); + } + + static void set_modelData(v8::Local<v8::String>, v8::Local<v8::Value> value, const v8::AccessorInfo &info) + { + QQmlDelegateModelItem *data = v8_resource_cast<QQmlDelegateModelItem>(info.This()); + V8ASSERT_TYPE_SETTER(data, "Not a valid VisualData object"); + + static_cast<QQmlDMListAccessorData *>(data)->setModelData( + data->engine->toVariant(value, QVariant::Invalid)); + } + + v8::Handle<v8::Value> get() + { + v8::Local<v8::Object> data = engineData(engine)->constructorListItem->NewInstance(); + data->SetExternalResource(this); + ++scriptRef; + return data; + } + + void setValue(const QString &role, const QVariant &value) + { + if (role == QLatin1String("modelData")) + cachedData = value; + } + + bool resolveIndex(const QQmlAdaptorModel &model, int idx) + { + if (index == -1) { + index = idx; + cachedData = model.list.at(idx); + emit modelIndexChanged(); + emit modelDataChanged(); + return true; + } else { + return false; + } + } + + +Q_SIGNALS: + void modelDataChanged(); + +private: + QVariant cachedData; +}; + + +class VDMListDelegateDataType : public QQmlAdaptorModel::Accessors +{ +public: + inline VDMListDelegateDataType() {} + + int count(const QQmlAdaptorModel &model) const + { + return model.list.count(); + } + + QVariant value(const QQmlAdaptorModel &model, int index, const QString &role) const + { + return role == QLatin1String("modelData") + ? model.list.at(index) + : QVariant(); + } + + QQmlDelegateModelItem *createItem( + QQmlAdaptorModel &model, + QQmlDelegateModelItemMetaType *metaType, + QQmlEngine *, + int index) const + { + return new QQmlDMListAccessorData( + metaType, + index, + index >= 0 && index < model.list.count() ? model.list.at(index) : QVariant()); + } +}; + +//----------------------------------------------------------------- +// QObject +//----------------------------------------------------------------- + +class VDMObjectDelegateDataType; +class QQmlDMObjectData : public QQmlDelegateModelItem, public QQmlAdaptorModelProxyInterface +{ + Q_OBJECT + Q_PROPERTY(QObject *modelData READ modelData CONSTANT) + Q_INTERFACES(QQmlAdaptorModelProxyInterface) +public: + QQmlDMObjectData( + QQmlDelegateModelItemMetaType *metaType, + VDMObjectDelegateDataType *dataType, + int index, + QObject *object); + + QObject *modelData() const { return object; } + QObject *proxiedObject() { return object; } + + QQmlGuard<QObject> object; +}; + +class VDMObjectDelegateDataType : public QQmlRefCount, public QQmlAdaptorModel::Accessors +{ +public: + QMetaObject *metaObject; + int propertyOffset; + int signalOffset; + bool shared; + QMetaObjectBuilder builder; + + VDMObjectDelegateDataType() + : metaObject(0) + , propertyOffset(0) + , signalOffset(0) + , shared(true) + { + } + + VDMObjectDelegateDataType(const VDMObjectDelegateDataType &type) + : QQmlRefCount() + , QQmlAdaptorModel::Accessors() + , metaObject(0) + , propertyOffset(type.propertyOffset) + , signalOffset(type.signalOffset) + , shared(false) + , builder(type.metaObject, QMetaObjectBuilder::Properties + | QMetaObjectBuilder::Signals + | QMetaObjectBuilder::SuperClass + | QMetaObjectBuilder::ClassName) + { + builder.setFlags(QMetaObjectBuilder::DynamicMetaObject); + } + + ~VDMObjectDelegateDataType() + { + free(metaObject); + } + + int count(const QQmlAdaptorModel &model) const + { + return model.list.count(); + } + + QVariant value(const QQmlAdaptorModel &model, int index, const QString &role) const + { + if (QObject *object = model.list.at(index).value<QObject *>()) + return object->property(role.toUtf8()); + return QVariant(); + } + + QQmlDelegateModelItem *createItem( + QQmlAdaptorModel &model, + QQmlDelegateModelItemMetaType *metaType, + QQmlEngine *, + int index) const + { + VDMObjectDelegateDataType *dataType = const_cast<VDMObjectDelegateDataType *>(this); + if (!metaObject) + dataType->initializeMetaType(model); + return index >= 0 && index < model.list.count() + ? new QQmlDMObjectData(metaType, dataType, index, qvariant_cast<QObject *>(model.list.at(index))) + : 0; + } + + void initializeMetaType(QQmlAdaptorModel &) + { + setModelDataType<QQmlDMObjectData>(&builder, this); + + metaObject = builder.toMetaObject(); + } + + void cleanup(QQmlAdaptorModel &, QQmlDelegateModel *) const + { + const_cast<VDMObjectDelegateDataType *>(this)->release(); + } +}; + +class QQmlDMObjectDataMetaObject : public QAbstractDynamicMetaObject +{ +public: + QQmlDMObjectDataMetaObject(QQmlDMObjectData *data, VDMObjectDelegateDataType *type) + : m_data(data) + , m_type(type) + { + QObjectPrivate *op = QObjectPrivate::get(m_data); + *static_cast<QMetaObject *>(this) = *type->metaObject; + op->metaObject = this; + m_type->addref(); + } + + ~QQmlDMObjectDataMetaObject() + { + m_type->release(); + } + + int metaCall(QMetaObject::Call call, int id, void **arguments) + { + static const int objectPropertyOffset = QObject::staticMetaObject.propertyCount(); + if (id >= m_type->propertyOffset + && (call == QMetaObject::ReadProperty + || call == QMetaObject::WriteProperty + || call == QMetaObject::ResetProperty)) { + if (m_data->object) + QMetaObject::metacall(m_data->object, call, id - m_type->propertyOffset + objectPropertyOffset, arguments); + return -1; + } else if (id >= m_type->signalOffset && call == QMetaObject::InvokeMetaMethod) { + QMetaObject::activate(m_data, this, id - m_type->signalOffset, 0); + return -1; + } else { + return m_data->qt_metacall(call, id, arguments); + } + } + + int createProperty(const char *name, const char *) + { + if (!m_data->object) + return -1; + const QMetaObject *metaObject = m_data->object->metaObject(); + static const int objectPropertyOffset = QObject::staticMetaObject.propertyCount(); + + const int previousPropertyCount = propertyCount() - propertyOffset(); + int propertyIndex = metaObject->indexOfProperty(name); + if (propertyIndex == -1) + return -1; + if (previousPropertyCount + objectPropertyOffset == metaObject->propertyCount()) + return propertyIndex + m_type->propertyOffset - objectPropertyOffset; + + if (m_type->shared) { + VDMObjectDelegateDataType *type = m_type; + m_type = new VDMObjectDelegateDataType(*m_type); + type->release(); + } + + const int previousMethodCount = methodCount(); + int notifierId = previousMethodCount - methodOffset(); + for (int propertyId = previousPropertyCount; propertyId < metaObject->propertyCount() - objectPropertyOffset; ++propertyId) { + QMetaProperty property = metaObject->property(propertyId + objectPropertyOffset); + QMetaPropertyBuilder propertyBuilder; + if (property.hasNotifySignal()) { + m_type->builder.addSignal("__" + QByteArray::number(propertyId) + "()"); + propertyBuilder = m_type->builder.addProperty(property.name(), property.typeName(), notifierId); + ++notifierId; + } else { + propertyBuilder = m_type->builder.addProperty(property.name(), property.typeName()); + } + propertyBuilder.setWritable(property.isWritable()); + propertyBuilder.setResettable(property.isResettable()); + propertyBuilder.setConstant(property.isConstant()); + } + + if (m_type->metaObject) + free(m_type->metaObject); + m_type->metaObject = m_type->builder.toMetaObject(); + *static_cast<QMetaObject *>(this) = *m_type->metaObject; + + notifierId = previousMethodCount; + for (int i = previousPropertyCount; i < metaObject->propertyCount() - objectPropertyOffset; ++i) { + QMetaProperty property = metaObject->property(i + objectPropertyOffset); + if (property.hasNotifySignal()) { + QQmlPropertyPrivate::connect( + m_data->object, property.notifySignalIndex(), m_data, notifierId); + ++notifierId; + } + } + return propertyIndex + m_type->propertyOffset - objectPropertyOffset; + } + + QQmlDMObjectData *m_data; + VDMObjectDelegateDataType *m_type; +}; + +QQmlDMObjectData::QQmlDMObjectData( + QQmlDelegateModelItemMetaType *metaType, + VDMObjectDelegateDataType *dataType, + int index, + QObject *object) + : QQmlDelegateModelItem(metaType, index) + , object(object) +{ + new QQmlDMObjectDataMetaObject(this, dataType); +} + +//----------------------------------------------------------------- +// QQmlAdaptorModel +//----------------------------------------------------------------- + +static const QQmlAdaptorModel::Accessors qt_vdm_null_accessors; +static const VDMListDelegateDataType qt_vdm_list_accessors; + +QQmlAdaptorModel::Accessors::~Accessors() +{ +} + +QQmlAdaptorModel::QQmlAdaptorModel() + : accessors(&qt_vdm_null_accessors) +{ +} + +QQmlAdaptorModel::~QQmlAdaptorModel() +{ + accessors->cleanup(*this); +} + +void QQmlAdaptorModel::setModel(const QVariant &variant, QQmlDelegateModel *vdm, QQmlEngine *engine) +{ + accessors->cleanup(*this, vdm); + + list.setList(variant, engine); + + if (QObject *object = qvariant_cast<QObject *>(variant)) { + setObject(object); + if (QAbstractItemModel *model = qobject_cast<QAbstractItemModel *>(object)) { + accessors = new VDMAbstractItemModelDataType(this); + + qmlobject_connect(model, QAbstractItemModel, SIGNAL(rowsInserted(QModelIndex,int,int)), + vdm, QQmlDelegateModel, SLOT(_q_rowsInserted(QModelIndex,int,int))); + qmlobject_connect(model, QAbstractItemModel, SIGNAL(rowsRemoved(QModelIndex,int,int)), + vdm, QQmlDelegateModel, SLOT(_q_rowsRemoved(QModelIndex,int,int))); + qmlobject_connect(model, QAbstractItemModel, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), + vdm, QQmlDelegateModel, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int))); + qmlobject_connect(model, QAbstractItemModel, SIGNAL(dataChanged(QModelIndex,QModelIndex,QVector<int>)), + vdm, QQmlDelegateModel, SLOT(_q_dataChanged(QModelIndex,QModelIndex,QVector<int>))); + qmlobject_connect(model, QAbstractItemModel, SIGNAL(rowsMoved(QModelIndex,int,int,QModelIndex,int)), + vdm, QQmlDelegateModel, SLOT(_q_rowsMoved(QModelIndex,int,int,QModelIndex,int))); + qmlobject_connect(model, QAbstractItemModel, SIGNAL(modelReset()), + vdm, QQmlDelegateModel, SLOT(_q_modelReset())); + qmlobject_connect(model, QAbstractItemModel, SIGNAL(layoutChanged()), + vdm, QQmlDelegateModel, SLOT(_q_layoutChanged())); + } else { + accessors = new VDMObjectDelegateDataType; + } + } else if (list.type() == QQmlListAccessor::ListProperty) { + setObject(static_cast<const QQmlListReference *>(variant.constData())->object()); + accessors = new VDMObjectDelegateDataType; + } else if (list.type() != QQmlListAccessor::Invalid) { + Q_ASSERT(list.type() != QQmlListAccessor::Instance); // Should have cast to QObject. + setObject(0); + accessors = &qt_vdm_list_accessors; + } else { + setObject(0); + accessors = &qt_vdm_null_accessors; + } +} + +void QQmlAdaptorModel::invalidateModel(QQmlDelegateModel *vdm) +{ + accessors->cleanup(*this, vdm); + accessors = &qt_vdm_null_accessors; + // Don't clear the model object as we still need the guard to clear the list variant if the + // object is destroyed. +} + +bool QQmlAdaptorModel::isValid() const +{ + return accessors != &qt_vdm_null_accessors; +} + +void QQmlAdaptorModel::objectDestroyed(QObject *) +{ + setModel(QVariant(), 0, 0); +} + +QQmlAdaptorModelEngineData::QQmlAdaptorModelEngineData(QV8Engine *) +{ + strings = qPersistentNew(v8::Array::New(StringCount)); + strings->Set(Index, v8::String::New("index")); + strings->Set(ModelData, v8::String::New("modelData")); + strings->Set(HasModelChildren, v8::String::New("hasModelChildren")); + + v8::Local<v8::FunctionTemplate> listItem = v8::FunctionTemplate::New(); + listItem->InstanceTemplate()->SetHasExternalResource(true); + listItem->InstanceTemplate()->SetAccessor(index(), get_index); + listItem->InstanceTemplate()->SetAccessor( + modelData(), + QQmlDMListAccessorData::get_modelData, + QQmlDMListAccessorData::set_modelData); + constructorListItem = qPersistentNew(listItem->GetFunction()); +} + +QQmlAdaptorModelEngineData::~QQmlAdaptorModelEngineData() +{ + qPersistentDispose(constructorListItem); + qPersistentDispose(strings); +} + +QT_END_NAMESPACE + +#include <qqmladaptormodel.moc> |