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Diffstat (limited to 'src/qmlmodels/qqmltableinstancemodel_p.h')
-rw-r--r-- | src/qmlmodels/qqmltableinstancemodel_p.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/qmlmodels/qqmltableinstancemodel_p.h b/src/qmlmodels/qqmltableinstancemodel_p.h new file mode 100644 index 0000000000..20331df5cc --- /dev/null +++ b/src/qmlmodels/qqmltableinstancemodel_p.h @@ -0,0 +1,162 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** 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 The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/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 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQMLTABLEINSTANCEMODEL_P_H +#define QQMLTABLEINSTANCEMODEL_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtQmlModels/private/qqmldelegatemodel_p.h> +#include <QtQmlModels/private/qqmldelegatemodel_p_p.h> + +QT_BEGIN_NAMESPACE + +class QQmlTableInstanceModel; +class QQmlAbstractDelegateComponent; + +class QQmlTableInstanceModelIncubationTask : public QQDMIncubationTask +{ +public: + QQmlTableInstanceModelIncubationTask( + QQmlTableInstanceModel *tableInstanceModel + , QQmlDelegateModelItem* modelItemToIncubate + , IncubationMode mode) + : QQDMIncubationTask(nullptr, mode) + , modelItemToIncubate(modelItemToIncubate) + , tableInstanceModel(tableInstanceModel) { + clear(); + } + + void statusChanged(Status status) override; + void setInitialState(QObject *object) override; + + QQmlDelegateModelItem *modelItemToIncubate = nullptr; + QQmlTableInstanceModel *tableInstanceModel = nullptr; +}; + +class Q_QMLMODELS_PRIVATE_EXPORT QQmlTableInstanceModel : public QQmlInstanceModel +{ + Q_OBJECT + +public: + + enum ReusableFlag { + NotReusable, + Reusable + }; + + QQmlTableInstanceModel(QQmlContext *qmlContext, QObject *parent = nullptr); + ~QQmlTableInstanceModel() override; + + void useImportVersion(int minorVersion); + + int count() const override { return m_adaptorModel.count(); } + int rows() const { return m_adaptorModel.rowCount(); } + int columns() const { return m_adaptorModel.columnCount(); } + + bool isValid() const override { return true; } + + QVariant model() const; + void setModel(const QVariant &model); + + QQmlComponent *delegate() const; + void setDelegate(QQmlComponent *); + + const QAbstractItemModel *abstractItemModel() const override; + + QObject *object(int index, QQmlIncubator::IncubationMode incubationMode = QQmlIncubator::AsynchronousIfNested) override; + ReleaseFlags release(QObject *object) override { return release(object, NotReusable); } + ReleaseFlags release(QObject *object, ReusableFlag reusable); + void cancel(int) override; + + void insertIntoReusableItemsPool(QQmlDelegateModelItem *modelItem); + QQmlDelegateModelItem *takeFromReusableItemsPool(const QQmlComponent *delegate); + void drainReusableItemsPool(int maxPoolTime); + int poolSize() { return m_reusableItemsPool.size(); } + void reuseItem(QQmlDelegateModelItem *item, int newModelIndex); + + QQmlIncubator::Status incubationStatus(int index) override; + + QVariant variantValue(int, const QString &) override { Q_UNREACHABLE(); return QVariant(); } + void setWatchedRoles(const QList<QByteArray> &) override { Q_UNREACHABLE(); } + int indexOf(QObject *, QObject *) const override { Q_UNREACHABLE(); return 0; } + +Q_SIGNALS: + void itemPooled(int index, QObject *object); + void itemReused(int index, QObject *object); + +private: + QQmlComponent *resolveDelegate(int index); + + QQmlAdaptorModel m_adaptorModel; + QQmlAbstractDelegateComponent *m_delegateChooser = nullptr; + QQmlComponent *m_delegate = nullptr; + QPointer<QQmlContext> m_qmlContext; + QQmlDelegateModelItemMetaType *m_metaType; + + QHash<int, QQmlDelegateModelItem *> m_modelItems; + QList<QQmlDelegateModelItem *> m_reusableItemsPool; + QList<QQmlIncubator *> m_finishedIncubationTasks; + + void incubateModelItem(QQmlDelegateModelItem *modelItem, QQmlIncubator::IncubationMode incubationMode); + void incubatorStatusChanged(QQmlTableInstanceModelIncubationTask *dmIncubationTask, QQmlIncubator::Status status); + void deleteIncubationTaskLater(QQmlIncubator *incubationTask); + void deleteAllFinishedIncubationTasks(); + QQmlDelegateModelItem *resolveModelItem(int index); + + void dataChangedCallback(const QModelIndex &begin, const QModelIndex &end, const QVector<int> &roles); + + static bool isDoneIncubating(QQmlDelegateModelItem *modelItem); + static void deleteModelItemLater(QQmlDelegateModelItem *modelItem); + + friend class QQmlTableInstanceModelIncubationTask; +}; + +QT_END_NAMESPACE + +#endif // QQMLTABLEINSTANCEMODEL_P_H |