plasma-framework/autotests/dynamictreemodel.h

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/*
SPDX-FileCopyrightText: 2009 Stephen Kelly <steveire@gmail.com>
SPDX-FileCopyrightText: 2009 Nokia Corporation and /or its subsidiary(-ies) <qt-info@nokia.com>
This file is part of the test suite of the Qt Toolkit.
SPDX-License-Identifier: LGPL-2.1-only WITH Qt-LGPL-exception-1.1
*/
#ifndef DYNAMICTREEMODEL_H
#define DYNAMICTREEMODEL_H
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#include <QAbstractItemModel>
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#include <QHash>
#include <QList>
class DynamicTreeModel : public QAbstractItemModel
{
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Q_OBJECT
public:
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DynamicTreeModel(QObject *parent = nullptr);
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QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
QModelIndex parent(const QModelIndex &index) const;
int rowCount(const QModelIndex &index = QModelIndex()) const;
int columnCount(const QModelIndex &index = QModelIndex()) const;
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QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
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void clear();
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protected Q_SLOTS:
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/**
Finds the parent id of the string with id @p searchId.
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Returns -1 if not found.
*/
qint64 findParentId(qint64 searchId) const;
private:
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QHash<qint64, QString> m_items;
QHash<qint64, QList<QList<qint64>>> m_childItems;
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qint64 nextId;
qint64 newId()
{
return nextId++;
};
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QModelIndex m_nextParentIndex;
int m_nextRow;
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int m_depth;
int maxDepth;
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friend class ModelInsertCommand;
friend class ModelMoveCommand;
friend class ModelResetCommand;
friend class ModelResetCommandFixed;
};
class ModelChangeCommand : public QObject
{
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Q_OBJECT
public:
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explicit ModelChangeCommand(DynamicTreeModel *model, QObject *parent = nullptr);
virtual ~ModelChangeCommand()
{
}
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void setAncestorRowNumbers(QList<int> rowNumbers)
{
m_rowNumbers = rowNumbers;
}
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QModelIndex findIndex(QList<int> rows);
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void setStartRow(int row)
{
m_startRow = row;
}
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void setEndRow(int row)
{
m_endRow = row;
}
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void setNumCols(int cols)
{
m_numCols = cols;
}
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virtual void doCommand() = 0;
protected:
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DynamicTreeModel *m_model;
QList<int> m_rowNumbers;
int m_numCols;
int m_startRow;
int m_endRow;
};
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typedef QList<ModelChangeCommand *> ModelChangeCommandList;
class ModelInsertCommand : public ModelChangeCommand
{
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Q_OBJECT
public:
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explicit ModelInsertCommand(DynamicTreeModel *model, QObject *parent = nullptr);
virtual ~ModelInsertCommand()
{
}
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virtual void doCommand();
};
class ModelMoveCommand : public ModelChangeCommand
{
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Q_OBJECT
public:
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ModelMoveCommand(DynamicTreeModel *model, QObject *parent);
virtual ~ModelMoveCommand()
{
}
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virtual bool emitPreSignal(const QModelIndex &srcParent, int srcStart, int srcEnd, const QModelIndex &destParent, int destRow);
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virtual void doCommand();
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virtual void emitPostSignal();
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void setDestAncestors(QList<int> rows)
{
m_destRowNumbers = rows;
}
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void setDestRow(int row)
{
m_destRow = row;
}
protected:
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QList<int> m_destRowNumbers;
int m_destRow;
};
/**
A command which does a move and emits a reset signal.
*/
class ModelResetCommand : public ModelMoveCommand
{
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Q_OBJECT
public:
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explicit ModelResetCommand(DynamicTreeModel *model, QObject *parent = nullptr);
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virtual ~ModelResetCommand();
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virtual bool emitPreSignal(const QModelIndex &srcParent, int srcStart, int srcEnd, const QModelIndex &destParent, int destRow);
virtual void emitPostSignal();
};
/**
A command which does a move and emits a beginResetModel and endResetModel signals.
*/
class ModelResetCommandFixed : public ModelMoveCommand
{
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Q_OBJECT
public:
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explicit ModelResetCommandFixed(DynamicTreeModel *model, QObject *parent = nullptr);
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virtual ~ModelResetCommandFixed();
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virtual bool emitPreSignal(const QModelIndex &srcParent, int srcStart, int srcEnd, const QModelIndex &destParent, int destRow);
virtual void emitPostSignal();
};
#endif