| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtWidgets module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
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| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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| ** |
| ****************************************************************************/ |
| |
| #ifndef QTREEWIDGET_P_H |
| #define QTREEWIDGET_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. This header file may change |
| // from version to version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtCore/qabstractitemmodel.h> |
| #include <private/qabstractitemmodel_p.h> |
| #include <QtCore/qpair.h> |
| #include <QtCore/qbasictimer.h> |
| #include <QtWidgets/qtreewidget.h> |
| #include <private/qtreeview_p.h> |
| #include <QtWidgets/qheaderview.h> |
| |
| #ifndef QT_NO_TREEWIDGET |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QTreeWidgetItem; |
| class QTreeWidgetItemIterator; |
| class QTreeModelPrivate; |
| |
| class QTreeModel : public QAbstractItemModel |
| { |
| Q_OBJECT |
| friend class QTreeWidget; |
| friend class QTreeWidgetPrivate; |
| friend class QTreeWidgetItem; |
| friend class QTreeWidgetItemPrivate; |
| friend class QTreeWidgetItemIterator; |
| friend class QTreeWidgetItemIteratorPrivate; |
| |
| public: |
| explicit QTreeModel(int columns = 0, QTreeWidget *parent = 0); |
| ~QTreeModel(); |
| |
| inline QTreeWidget *view() const |
| { return qobject_cast<QTreeWidget*>(QObject::parent()); } |
| |
| void clear(); |
| void setColumnCount(int columns); |
| |
| QTreeWidgetItem *item(const QModelIndex &index) const; |
| void itemChanged(QTreeWidgetItem *item); |
| |
| QModelIndex index(const QTreeWidgetItem *item, int column) const; |
| QModelIndex index(int row, int column, const QModelIndex &parent) const Q_DECL_OVERRIDE; |
| QModelIndex parent(const QModelIndex &child) const Q_DECL_OVERRIDE; |
| int rowCount(const QModelIndex &parent) const Q_DECL_OVERRIDE; |
| int columnCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE; |
| bool hasChildren(const QModelIndex &parent) const Q_DECL_OVERRIDE; |
| |
| QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const Q_DECL_OVERRIDE; |
| bool setData(const QModelIndex &index, const QVariant &value, int role) Q_DECL_OVERRIDE; |
| |
| QMap<int, QVariant> itemData(const QModelIndex &index) const Q_DECL_OVERRIDE; |
| |
| QVariant headerData(int section, Qt::Orientation orientation, int role) const Q_DECL_OVERRIDE; |
| bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, |
| int role) Q_DECL_OVERRIDE; |
| |
| Qt::ItemFlags flags(const QModelIndex &index) const Q_DECL_OVERRIDE; |
| |
| void sort(int column, Qt::SortOrder order) Q_DECL_OVERRIDE; |
| void ensureSorted(int column, Qt::SortOrder order, |
| int start, int end, const QModelIndex &parent); |
| static bool itemLessThan(const QPair<QTreeWidgetItem*,int> &left, |
| const QPair<QTreeWidgetItem*,int> &right); |
| static bool itemGreaterThan(const QPair<QTreeWidgetItem*,int> &left, |
| const QPair<QTreeWidgetItem*,int> &right); |
| static QList<QTreeWidgetItem*>::iterator sortedInsertionIterator( |
| const QList<QTreeWidgetItem*>::iterator &begin, |
| const QList<QTreeWidgetItem*>::iterator &end, |
| Qt::SortOrder order, QTreeWidgetItem *item); |
| |
| bool insertRows(int row, int count, const QModelIndex &) Q_DECL_OVERRIDE; |
| bool insertColumns(int column, int count, const QModelIndex &) Q_DECL_OVERRIDE; |
| |
| bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) Q_DECL_OVERRIDE; |
| |
| // dnd |
| QStringList mimeTypes() const Q_DECL_OVERRIDE; |
| QMimeData *mimeData(const QModelIndexList &indexes) const Q_DECL_OVERRIDE; |
| bool dropMimeData(const QMimeData *data, Qt::DropAction action, |
| int row, int column, const QModelIndex &parent) Q_DECL_OVERRIDE; |
| Qt::DropActions supportedDropActions() const Q_DECL_OVERRIDE; |
| |
| QMimeData *internalMimeData() const; |
| |
| inline QModelIndex createIndexFromItem(int row, int col, QTreeWidgetItem *item) const |
| { return createIndex(row, col, item); } |
| |
| protected: |
| QTreeModel(QTreeModelPrivate &, QTreeWidget *parent = 0); |
| void emitDataChanged(QTreeWidgetItem *item, int column); |
| void beginInsertItems(QTreeWidgetItem *parent, int row, int count); |
| void endInsertItems(); |
| void beginRemoveItems(QTreeWidgetItem *parent, int row, int count); |
| void endRemoveItems(); |
| void sortItems(QList<QTreeWidgetItem*> *items, int column, Qt::SortOrder order); |
| void timerEvent(QTimerEvent *) Q_DECL_OVERRIDE; |
| |
| private: |
| QTreeWidgetItem *rootItem; |
| QTreeWidgetItem *headerItem; |
| |
| mutable QModelIndexList cachedIndexes; |
| QList<QTreeWidgetItemIterator*> iterators; |
| |
| mutable QBasicTimer sortPendingTimer; |
| mutable bool skipPendingSort; //while doing internal operation we don't care about sorting |
| bool inline executePendingSort() const; |
| |
| bool isChanging() const; |
| |
| private: |
| Q_DECLARE_PRIVATE(QTreeModel) |
| public: |
| struct SkipSorting |
| { |
| const QTreeModel * const model; |
| const bool previous; |
| SkipSorting(const QTreeModel *m) : model(m), previous(model->skipPendingSort) |
| { model->skipPendingSort = true; } |
| ~SkipSorting() { model->skipPendingSort = previous; } |
| }; |
| friend struct SkipSorting; |
| }; |
| |
| QT_BEGIN_INCLUDE_NAMESPACE |
| #include "private/qabstractitemmodel_p.h" |
| QT_END_INCLUDE_NAMESPACE |
| |
| class QTreeModelPrivate : public QAbstractItemModelPrivate |
| { |
| Q_DECLARE_PUBLIC(QTreeModel) |
| }; |
| |
| class QTreeWidgetItemPrivate |
| { |
| public: |
| QTreeWidgetItemPrivate(QTreeWidgetItem *item) |
| : q(item), disabled(false), selected(false), rowGuess(-1), policy(QTreeWidgetItem::DontShowIndicatorWhenChildless) {} |
| void propagateDisabled(QTreeWidgetItem *item); |
| void sortChildren(int column, Qt::SortOrder order, bool climb); |
| QTreeWidgetItem *q; |
| QVariantList display; |
| uint disabled : 1; |
| uint selected : 1; |
| int rowGuess; |
| QTreeWidgetItem::ChildIndicatorPolicy policy; |
| }; |
| |
| |
| inline bool QTreeModel::executePendingSort() const |
| { |
| if (!skipPendingSort && sortPendingTimer.isActive() && !isChanging()) { |
| sortPendingTimer.stop(); |
| int column = view()->header()->sortIndicatorSection(); |
| Qt::SortOrder order = view()->header()->sortIndicatorOrder(); |
| QTreeModel *that = const_cast<QTreeModel*>(this); |
| that->sort(column, order); |
| return true; |
| } |
| return false; |
| } |
| |
| class QTreeWidgetPrivate : public QTreeViewPrivate |
| { |
| friend class QTreeModel; |
| Q_DECLARE_PUBLIC(QTreeWidget) |
| public: |
| QTreeWidgetPrivate() : QTreeViewPrivate(), explicitSortColumn(-1) {} |
| inline QTreeModel *treeModel() const { return qobject_cast<QTreeModel*>(model); } |
| inline QModelIndex index(const QTreeWidgetItem *item, int column = 0) const |
| { return treeModel()->index(item, column); } |
| inline QTreeWidgetItem *item(const QModelIndex &index) const |
| { return treeModel()->item(index); } |
| void _q_emitItemPressed(const QModelIndex &index); |
| void _q_emitItemClicked(const QModelIndex &index); |
| void _q_emitItemDoubleClicked(const QModelIndex &index); |
| void _q_emitItemActivated(const QModelIndex &index); |
| void _q_emitItemEntered(const QModelIndex &index); |
| void _q_emitItemChanged(const QModelIndex &index); |
| void _q_emitItemExpanded(const QModelIndex &index); |
| void _q_emitItemCollapsed(const QModelIndex &index); |
| void _q_emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &index); |
| void _q_sort(); |
| void _q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight); |
| void _q_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected); |
| |
| // used by QTreeWidgetItem::sortChildren to make sure the column argument is used |
| int explicitSortColumn; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_TREEWIDGET |
| |
| #endif // QTREEWIDGET_P_H |