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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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 <QtWidgets/private/qtwidgetsglobal_p.h>
#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>
#include <array>
QT_REQUIRE_CONFIG(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 = nullptr);
~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 override;
QModelIndex parent(const QModelIndex &child) const override;
int rowCount(const QModelIndex &parent) const override;
int columnCount(const QModelIndex &parent = QModelIndex()) const override;
bool hasChildren(const QModelIndex &parent) const override;
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
bool setData(const QModelIndex &index, const QVariant &value, int role) override;
bool clearItemData(const QModelIndex &index) override;
QMap<int, QVariant> itemData(const QModelIndex &index) const override;
QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value,
int role) override;
Qt::ItemFlags flags(const QModelIndex &index) const override;
void sort(int column, Qt::SortOrder order) 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 &) override;
bool insertColumns(int column, int count, const QModelIndex &) override;
bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
// dnd
QStringList mimeTypes() const override;
QMimeData *mimeData(const QModelIndexList &indexes) const override;
bool dropMimeData(const QMimeData *data, Qt::DropAction action,
int row, int column, const QModelIndex &parent) override;
Qt::DropActions supportedDropActions() const override;
QMimeData *internalMimeData() const;
inline QModelIndex createIndexFromItem(int row, int col, QTreeWidgetItem *item) const
{ return createIndex(row, col, item); }
protected:
QTreeModel(QTreeModelPrivate &, QTreeWidget *parent = nullptr);
void emitDataChanged(QTreeWidgetItem *item, int column, const QList<int> &roles);
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 *) override;
private:
QTreeWidgetItem *rootItem;
QTreeWidgetItem *headerItem;
mutable QModelIndexList cachedIndexes;
QList<QTreeWidgetItemIterator*> iterators;
mutable QBasicTimer sortPendingTimer;
mutable bool skipPendingSort = false; // no sorting during internal operations
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 ? model->skipPendingSort : false)
{ if (model) model->skipPendingSort = true; }
~SkipSorting() { if (model) 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)
void executePendingOperations() const override;
};
class QTreeWidgetItemPrivate
{
public:
QTreeWidgetItemPrivate(QTreeWidgetItem *item)
: q(item), disabled(false), selected(false), hidden(false), rowGuess(-1),
policy(QTreeWidgetItem::DontShowIndicatorWhenChildless) {}
void propagateDisabled(QTreeWidgetItem *item);
void updateHiddenStatus(QTreeWidgetItem *item, bool inserting);
void sortChildren(int column, Qt::SortOrder order, bool climb);
QTreeWidgetItem *q;
QVariantList display;
uint disabled : 1;
uint selected : 1;
uint hidden : 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) {}
void clearConnections();
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 emitItemPressed(const QModelIndex &index);
void emitItemClicked(const QModelIndex &index);
void emitItemDoubleClicked(const QModelIndex &index);
void emitItemActivated(const QModelIndex &index);
void emitItemEntered(const QModelIndex &index);
void emitItemChanged(const QModelIndex &index);
void emitItemExpanded(const QModelIndex &index);
void emitItemCollapsed(const QModelIndex &index);
void emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &index);
void sort();
void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
// used by QTreeWidgetItem::sortChildren to make sure the column argument is used
int explicitSortColumn;
std::array<QMetaObject::Connection, 12> connections;
};
QT_END_NAMESPACE
#endif // QTREEWIDGET_P_H
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