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276 lines
11 KiB
C++
276 lines
11 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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** $QT_BEGIN_LICENSE:LGPL21$
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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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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QITEMSELECTIONMODEL_H
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#define QITEMSELECTIONMODEL_H
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#include <QtCore/qset.h>
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#include <QtCore/qvector.h>
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#include <QtCore/qlist.h>
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#include <QtCore/qabstractitemmodel.h>
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QT_BEGIN_NAMESPACE
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#ifndef QT_NO_ITEMVIEWS
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class Q_CORE_EXPORT QItemSelectionRange
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{
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public:
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inline QItemSelectionRange() : tl(), br() {}
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#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
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// ### Qt 6: remove them all, the compiler-generated ones are fine
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inline QItemSelectionRange(const QItemSelectionRange &other)
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: tl(other.tl), br(other.br) {}
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# ifdef Q_COMPILER_RVALUE_REFS
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QItemSelectionRange(QItemSelectionRange &&other) Q_DECL_NOTHROW
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: tl(std::move(other.tl)), br(std::move(other.br)) {}
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QItemSelectionRange &operator=(QItemSelectionRange &&other) Q_DECL_NOTHROW
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{ tl = std::move(other.tl); br = std::move(other.br); return *this; }
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# endif
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QItemSelectionRange &operator=(const QItemSelectionRange &other)
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{ tl = other.tl; br = other.br; return *this; }
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#endif // Qt < 6
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QItemSelectionRange(const QModelIndex &topL, const QModelIndex &bottomR) : tl(topL), br(bottomR) {}
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explicit QItemSelectionRange(const QModelIndex &index) : tl(index), br(tl) {}
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void swap(QItemSelectionRange &other) Q_DECL_NOTHROW
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{
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qSwap(tl, other.tl);
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qSwap(br, other.br);
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}
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inline int top() const { return tl.row(); }
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inline int left() const { return tl.column(); }
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inline int bottom() const { return br.row(); }
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inline int right() const { return br.column(); }
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inline int width() const { return br.column() - tl.column() + 1; }
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inline int height() const { return br.row() - tl.row() + 1; }
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inline const QPersistentModelIndex &topLeft() const { return tl; }
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inline const QPersistentModelIndex &bottomRight() const { return br; }
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inline QModelIndex parent() const { return tl.parent(); }
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inline const QAbstractItemModel *model() const { return tl.model(); }
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inline bool contains(const QModelIndex &index) const
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{
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return (parent() == index.parent()
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&& tl.row() <= index.row() && tl.column() <= index.column()
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&& br.row() >= index.row() && br.column() >= index.column());
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}
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inline bool contains(int row, int column, const QModelIndex &parentIndex) const
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{
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return (parent() == parentIndex
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&& tl.row() <= row && tl.column() <= column
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&& br.row() >= row && br.column() >= column);
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}
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bool intersects(const QItemSelectionRange &other) const;
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#if QT_DEPRECATED_SINCE(5, 0)
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inline QItemSelectionRange intersect(const QItemSelectionRange &other) const
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{ return intersected(other); }
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#endif
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QItemSelectionRange intersected(const QItemSelectionRange &other) const;
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inline bool operator==(const QItemSelectionRange &other) const
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{ return (tl == other.tl && br == other.br); }
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inline bool operator!=(const QItemSelectionRange &other) const
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{ return !operator==(other); }
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inline bool operator<(const QItemSelectionRange &other) const
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{
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// Comparing parents will compare the models, but if two equivalent ranges
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// in two different models have invalid parents, they would appear the same
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if (other.tl.model() == tl.model()) {
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// parent has to be calculated, so we only do so once.
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const QModelIndex topLeftParent = tl.parent();
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const QModelIndex otherTopLeftParent = other.tl.parent();
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if (topLeftParent == otherTopLeftParent) {
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if (other.tl.row() == tl.row()) {
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if (other.tl.column() == tl.column()) {
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if (other.br.row() == br.row()) {
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return br.column() < other.br.column();
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}
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return br.row() < other.br.row();
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}
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return tl.column() < other.tl.column();
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}
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return tl.row() < other.tl.row();
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}
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return topLeftParent < otherTopLeftParent;
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}
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return tl.model() < other.tl.model();
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}
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inline bool isValid() const
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{
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return (tl.isValid() && br.isValid() && tl.parent() == br.parent()
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&& top() <= bottom() && left() <= right());
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}
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bool isEmpty() const;
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QModelIndexList indexes() const;
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private:
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QPersistentModelIndex tl, br;
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};
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Q_DECLARE_TYPEINFO(QItemSelectionRange, Q_MOVABLE_TYPE);
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class QItemSelection;
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class QItemSelectionModelPrivate;
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class Q_CORE_EXPORT QItemSelectionModel : public QObject
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{
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Q_OBJECT
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Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel NOTIFY modelChanged)
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Q_PROPERTY(bool hasSelection READ hasSelection NOTIFY selectionChanged STORED false DESIGNABLE false)
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Q_PROPERTY(QModelIndex currentIndex READ currentIndex NOTIFY currentChanged STORED false DESIGNABLE false)
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Q_PROPERTY(QItemSelection selection READ selection NOTIFY selectionChanged STORED false DESIGNABLE false)
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Q_PROPERTY(QModelIndexList selectedIndexes READ selectedIndexes NOTIFY selectionChanged STORED false DESIGNABLE false)
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Q_DECLARE_PRIVATE(QItemSelectionModel)
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public:
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enum SelectionFlag {
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NoUpdate = 0x0000,
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Clear = 0x0001,
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Select = 0x0002,
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Deselect = 0x0004,
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Toggle = 0x0008,
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Current = 0x0010,
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Rows = 0x0020,
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Columns = 0x0040,
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SelectCurrent = Select | Current,
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ToggleCurrent = Toggle | Current,
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ClearAndSelect = Clear | Select
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};
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Q_DECLARE_FLAGS(SelectionFlags, SelectionFlag)
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Q_FLAG(SelectionFlags)
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explicit QItemSelectionModel(QAbstractItemModel *model = Q_NULLPTR);
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explicit QItemSelectionModel(QAbstractItemModel *model, QObject *parent);
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virtual ~QItemSelectionModel();
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QModelIndex currentIndex() const;
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Q_INVOKABLE bool isSelected(const QModelIndex &index) const;
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Q_INVOKABLE bool isRowSelected(int row, const QModelIndex &parent) const;
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Q_INVOKABLE bool isColumnSelected(int column, const QModelIndex &parent) const;
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Q_INVOKABLE bool rowIntersectsSelection(int row, const QModelIndex &parent) const;
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Q_INVOKABLE bool columnIntersectsSelection(int column, const QModelIndex &parent) const;
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bool hasSelection() const;
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QModelIndexList selectedIndexes() const;
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Q_INVOKABLE QModelIndexList selectedRows(int column = 0) const;
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Q_INVOKABLE QModelIndexList selectedColumns(int row = 0) const;
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const QItemSelection selection() const;
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// ### Qt 6: Merge these two as "QAbstractItemModel *model() const"
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const QAbstractItemModel *model() const;
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QAbstractItemModel *model();
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void setModel(QAbstractItemModel *model);
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public Q_SLOTS:
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virtual void setCurrentIndex(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
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virtual void select(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
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virtual void select(const QItemSelection &selection, QItemSelectionModel::SelectionFlags command);
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virtual void clear();
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virtual void reset();
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void clearSelection();
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virtual void clearCurrentIndex();
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Q_SIGNALS:
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void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
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void currentChanged(const QModelIndex ¤t, const QModelIndex &previous);
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void currentRowChanged(const QModelIndex ¤t, const QModelIndex &previous);
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void currentColumnChanged(const QModelIndex ¤t, const QModelIndex &previous);
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void modelChanged(QAbstractItemModel *model);
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protected:
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QItemSelectionModel(QItemSelectionModelPrivate &dd, QAbstractItemModel *model);
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void emitSelectionChanged(const QItemSelection &newSelection, const QItemSelection &oldSelection);
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private:
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Q_DISABLE_COPY(QItemSelectionModel)
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Q_PRIVATE_SLOT(d_func(), void _q_columnsAboutToBeRemoved(const QModelIndex&, int, int))
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Q_PRIVATE_SLOT(d_func(), void _q_rowsAboutToBeRemoved(const QModelIndex&, int, int))
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Q_PRIVATE_SLOT(d_func(), void _q_columnsAboutToBeInserted(const QModelIndex&, int, int))
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Q_PRIVATE_SLOT(d_func(), void _q_rowsAboutToBeInserted(const QModelIndex&, int, int))
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Q_PRIVATE_SLOT(d_func(), void _q_layoutAboutToBeChanged(const QList<QPersistentModelIndex> &parents = QList<QPersistentModelIndex>(), QAbstractItemModel::LayoutChangeHint hint = QAbstractItemModel::NoHint))
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Q_PRIVATE_SLOT(d_func(), void _q_layoutChanged(const QList<QPersistentModelIndex> &parents = QList<QPersistentModelIndex>(), QAbstractItemModel::LayoutChangeHint hint = QAbstractItemModel::NoHint))
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QItemSelectionModel::SelectionFlags)
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// dummy implentation of qHash() necessary for instantiating QList<QItemSelectionRange>::toSet() with MSVC
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inline uint qHash(const QItemSelectionRange &) { return 0; }
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class Q_CORE_EXPORT QItemSelection : public QList<QItemSelectionRange>
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{
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public:
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QItemSelection() Q_DECL_NOTHROW : QList<QItemSelectionRange>() {}
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QItemSelection(const QModelIndex &topLeft, const QModelIndex &bottomRight);
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// reusing QList::swap() here is OK!
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void select(const QModelIndex &topLeft, const QModelIndex &bottomRight);
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bool contains(const QModelIndex &index) const;
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QModelIndexList indexes() const;
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void merge(const QItemSelection &other, QItemSelectionModel::SelectionFlags command);
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static void split(const QItemSelectionRange &range,
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const QItemSelectionRange &other,
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QItemSelection *result);
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};
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Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QItemSelection)
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#ifndef QT_NO_DEBUG_STREAM
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Q_CORE_EXPORT QDebug operator<<(QDebug, const QItemSelectionRange &);
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#endif
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#endif // QT_NO_ITEMVIEWS
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QT_END_NAMESPACE
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Q_DECLARE_METATYPE(QItemSelectionRange)
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Q_DECLARE_METATYPE(QItemSelection)
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#endif // QITEMSELECTIONMODEL_H
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