| 1 | // Copyright (C) 2023 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | // |
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| 5 | // W A R N I N G |
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| 6 | // ------------- |
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| 7 | // |
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| 8 | // This file is not part of the QtGraphs API. It exists purely as an |
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| 9 | // implementation detail. This header file may change from version to |
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| 10 | // version without notice, or even be removed. |
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| 11 | // |
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| 12 | // We mean it. |
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| 13 | |
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| 14 | #ifndef ABSTRACTITEMMODELHANDLER_P_H |
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| 15 | #define ABSTRACTITEMMODELHANDLER_P_H |
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| 16 | |
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| 17 | #include <QtGraphs/private/qgraphsglobal_p.h> |
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| 18 | #include <QtCore/QAbstractItemModel> |
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| 19 | #include <QtCore/QPointer> |
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| 20 | #include <QtCore/QTimer> |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | class AbstractItemModelHandler : public QObject |
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| 25 | { |
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| 26 | Q_OBJECT |
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| 27 | public: |
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| 28 | AbstractItemModelHandler(QObject *parent = 0); |
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| 29 | ~AbstractItemModelHandler() override; |
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| 30 | |
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| 31 | virtual void setItemModel(QAbstractItemModel *itemModel); |
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| 32 | virtual QAbstractItemModel *itemModel() const; |
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| 33 | |
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| 34 | public Q_SLOTS: |
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| 35 | virtual void handleColumnsInserted(const QModelIndex &parent, int start, int end); |
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| 36 | virtual void handleColumnsMoved(const QModelIndex &sourceParent, |
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| 37 | int sourceStart, |
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| 38 | int sourceEnd, |
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| 39 | const QModelIndex &destinationParent, |
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| 40 | int destinationColumn); |
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| 41 | virtual void handleColumnsRemoved(const QModelIndex &parent, int start, int end); |
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| 42 | virtual void handleDataChanged(const QModelIndex &topLeft, |
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| 43 | const QModelIndex &bottomRight, |
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| 44 | const QList<int> &roles = QList<int>()); |
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| 45 | virtual void handleLayoutChanged( |
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| 46 | const QList<QPersistentModelIndex> &parents = QList<QPersistentModelIndex>(), |
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| 47 | QAbstractItemModel::LayoutChangeHint hint = QAbstractItemModel::NoLayoutChangeHint); |
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| 48 | virtual void handleModelReset(); |
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| 49 | virtual void handleRowsInserted(const QModelIndex &parent, int start, int end); |
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| 50 | virtual void handleRowsMoved(const QModelIndex &sourceParent, |
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| 51 | int sourceStart, |
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| 52 | int sourceEnd, |
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| 53 | const QModelIndex &destinationParent, |
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| 54 | int destinationRow); |
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| 55 | virtual void handleRowsRemoved(const QModelIndex &parent, int start, int end); |
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| 56 | |
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| 57 | virtual void handleMappingChanged(); |
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| 58 | virtual void handlePendingResolve(); |
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| 59 | |
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| 60 | Q_SIGNALS: |
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| 61 | void itemModelChanged(const QAbstractItemModel *itemModel); |
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| 62 | |
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| 63 | protected: |
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| 64 | virtual void resolveModel() = 0; |
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| 65 | |
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| 66 | QPointer<QAbstractItemModel> m_itemModel; // Not owned |
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| 67 | bool resolvePending; |
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| 68 | QTimer m_resolveTimer; |
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| 69 | bool m_fullReset; |
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| 70 | const int noRoleIndex = -1; |
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| 71 | |
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| 72 | private: |
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| 73 | Q_DISABLE_COPY(AbstractItemModelHandler) |
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| 74 | }; |
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| 75 | |
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| 76 | QT_END_NAMESPACE |
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| 77 | |
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| 78 | #endif |
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| 79 | |
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