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248 lines
9.1 KiB
C++
248 lines
9.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QTREEWIDGET_P_H
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#define QTREEWIDGET_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. This header file may change
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// from version to version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QtCore/qabstractitemmodel.h>
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#include <qabstractitemmodel_p.h>
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#include <QtCore/qpair.h>
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#include <QtCore/qbasictimer.h>
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#include <QtGui/qtreewidget.h>
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#include <qtreeview_p.h>
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#include <QtGui/qheaderview.h>
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#ifndef QT_NO_TREEWIDGET
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QT_BEGIN_NAMESPACE
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class QTreeWidgetItem;
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class QTreeWidgetItemIterator;
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class QTreeModelPrivate;
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class QTreeModel : public QAbstractItemModel
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{
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Q_OBJECT
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friend class QTreeWidget;
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friend class QTreeWidgetPrivate;
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friend class QTreeWidgetItem;
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friend class QTreeWidgetItemPrivate;
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friend class QTreeWidgetItemIterator;
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friend class QTreeWidgetItemIteratorPrivate;
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public:
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explicit QTreeModel(int columns = 0, QTreeWidget *parent = 0);
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~QTreeModel();
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inline QTreeWidget *view() const
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{ return qobject_cast<QTreeWidget*>(QObject::parent()); }
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void clear();
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void setColumnCount(int columns);
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QTreeWidgetItem *item(const QModelIndex &index) const;
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void itemChanged(QTreeWidgetItem *item);
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QModelIndex index(const QTreeWidgetItem *item, int column) const;
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QModelIndex index(int row, int column, const QModelIndex &parent) const;
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QModelIndex parent(const QModelIndex &child) const;
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int rowCount(const QModelIndex &parent) const;
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int columnCount(const QModelIndex &parent = QModelIndex()) const;
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bool hasChildren(const QModelIndex &parent) const;
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QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
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bool setData(const QModelIndex &index, const QVariant &value, int role);
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QMap<int, QVariant> itemData(const QModelIndex &index) const;
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QVariant headerData(int section, Qt::Orientation orientation, int role) const;
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bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value,
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int role);
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Qt::ItemFlags flags(const QModelIndex &index) const;
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void sort(int column, Qt::SortOrder order);
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void ensureSorted(int column, Qt::SortOrder order,
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int start, int end, const QModelIndex &parent);
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static bool itemLessThan(const QPair<QTreeWidgetItem*,int> &left,
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const QPair<QTreeWidgetItem*,int> &right);
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static bool itemGreaterThan(const QPair<QTreeWidgetItem*,int> &left,
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const QPair<QTreeWidgetItem*,int> &right);
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static QList<QTreeWidgetItem*>::iterator sortedInsertionIterator(
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const QList<QTreeWidgetItem*>::iterator &begin,
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const QList<QTreeWidgetItem*>::iterator &end,
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Qt::SortOrder order, QTreeWidgetItem *item);
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bool insertRows(int row, int count, const QModelIndex &);
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bool insertColumns(int column, int count, const QModelIndex &);
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bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());
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// dnd
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QStringList mimeTypes() const;
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QMimeData *mimeData(const QModelIndexList &indexes) const;
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bool dropMimeData(const QMimeData *data, Qt::DropAction action,
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int row, int column, const QModelIndex &parent);
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Qt::DropActions supportedDropActions() const;
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QMimeData *internalMimeData() const;
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inline QModelIndex createIndexFromItem(int row, int col, QTreeWidgetItem *item) const
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{ return createIndex(row, col, item); }
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protected:
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QTreeModel(QTreeModelPrivate &, QTreeWidget *parent = 0);
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void emitDataChanged(QTreeWidgetItem *item, int column);
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void beginInsertItems(QTreeWidgetItem *parent, int row, int count);
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void endInsertItems();
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void beginRemoveItems(QTreeWidgetItem *parent, int row, int count);
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void endRemoveItems();
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void sortItems(QList<QTreeWidgetItem*> *items, int column, Qt::SortOrder order);
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void timerEvent(QTimerEvent *);
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private:
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QTreeWidgetItem *rootItem;
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QTreeWidgetItem *headerItem;
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mutable QModelIndexList cachedIndexes;
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QList<QTreeWidgetItemIterator*> iterators;
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mutable QBasicTimer sortPendingTimer;
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mutable bool skipPendingSort; //while doing internal operation we don't care about sorting
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bool inline executePendingSort() const;
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bool isChanging() const;
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private:
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Q_DECLARE_PRIVATE(QTreeModel)
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public:
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struct SkipSorting
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{
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const QTreeModel * const model;
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const bool previous;
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SkipSorting(const QTreeModel *m) : model(m), previous(model->skipPendingSort)
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{ model->skipPendingSort = true; }
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~SkipSorting() { model->skipPendingSort = previous; }
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};
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friend struct SkipSorting;
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};
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QT_BEGIN_INCLUDE_NAMESPACE
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#include "qabstractitemmodel_p.h"
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QT_END_INCLUDE_NAMESPACE
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class QTreeModelPrivate : public QAbstractItemModelPrivate
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{
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Q_DECLARE_PUBLIC(QTreeModel)
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};
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class QTreeWidgetItemPrivate
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{
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public:
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QTreeWidgetItemPrivate(QTreeWidgetItem *item)
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: q(item), disabled(false), selected(false), rowGuess(-1), policy(QTreeWidgetItem::DontShowIndicatorWhenChildless) {}
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void propagateDisabled(QTreeWidgetItem *item);
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void sortChildren(int column, Qt::SortOrder order, bool climb);
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QTreeWidgetItem *q;
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QVariantList display;
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uint disabled : 1;
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uint selected : 1;
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int rowGuess;
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QTreeWidgetItem::ChildIndicatorPolicy policy;
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};
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inline bool QTreeModel::executePendingSort() const
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{
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if (!skipPendingSort && sortPendingTimer.isActive() && !isChanging()) {
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sortPendingTimer.stop();
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int column = view()->header()->sortIndicatorSection();
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Qt::SortOrder order = view()->header()->sortIndicatorOrder();
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QTreeModel *that = const_cast<QTreeModel*>(this);
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that->sort(column, order);
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return true;
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}
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return false;
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}
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class QTreeWidgetPrivate : public QTreeViewPrivate
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{
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friend class QTreeModel;
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Q_DECLARE_PUBLIC(QTreeWidget)
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public:
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QTreeWidgetPrivate() : QTreeViewPrivate(), explicitSortColumn(-1) {}
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inline QTreeModel *treeModel() const { return qobject_cast<QTreeModel*>(model); }
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inline QModelIndex index(const QTreeWidgetItem *item, int column = 0) const
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{ return treeModel()->index(item, column); }
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inline QTreeWidgetItem *item(const QModelIndex &index) const
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{ return treeModel()->item(index); }
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void _q_emitItemPressed(const QModelIndex &index);
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void _q_emitItemClicked(const QModelIndex &index);
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void _q_emitItemDoubleClicked(const QModelIndex &index);
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void _q_emitItemActivated(const QModelIndex &index);
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void _q_emitItemEntered(const QModelIndex &index);
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void _q_emitItemChanged(const QModelIndex &index);
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void _q_emitItemExpanded(const QModelIndex &index);
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void _q_emitItemCollapsed(const QModelIndex &index);
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void _q_emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &index);
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void _q_sort();
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void _q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
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void _q_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
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// used by QTreeWidgetItem::sortChildren to make sure the column argument is used
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int explicitSortColumn;
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};
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QT_END_NAMESPACE
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#endif // QT_NO_TREEWIDGET
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#endif // QTREEWIDGET_P_H
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