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/****************************************************************************
**
** Copyright (C) 2016 Jochen Becher
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "qmt/infrastructure/uid.h"
#include <QObject>
#include <QHash>
namespace qmt {
class UndoController;
class ModelController;
class MElement;
class MObject;
class MDiagram;
class MRelation;
class DSelection;
class DContainer;
class DReferences;
class DElement;
class DRelation;
class QMT_EXPORT DiagramController : public QObject
{
Q_OBJECT
public:
enum UpdateAction {
UpdateGeometry, // update only position and size of element
UpdateMajor, // a major update of the element which will create a separate undo command
UpdateMinor // a minor update of the element which may be merged with other minor updates in one undo command
};
private:
class Clone;
class DiagramUndoCommand;
class UpdateElementCommand;
class AbstractAddRemCommand;
class AddElementsCommand;
class RemoveElementsCommand;
class FindDiagramsVisitor;
public:
explicit DiagramController(QObject *parent = 0);
~DiagramController() override;
signals:
void beginResetAllDiagrams();
void endResetAllDiagrams();
void beginResetDiagram(const MDiagram *diagram);
void endResetDiagram(const MDiagram *diagram);
void beginUpdateElement(int row, const MDiagram *diagram);
void endUpdateElement(int row, const MDiagram *diagram);
void beginInsertElement(int row, const MDiagram *diagram);
void endInsertElement(int row, const MDiagram *diagram);
void beginRemoveElement(int row, const MDiagram *diagram);
void endRemoveElement(int row, const MDiagram *diagram);
void modified(const MDiagram *diagram);
void diagramAboutToBeRemoved(const MDiagram *diagram);
public:
ModelController *modelController() const { return m_modelController; }
void setModelController(ModelController *modelController);
UndoController *undoController() const { return m_undoController; }
void setUndoController(UndoController *undoController);
private:
MDiagram *findDiagram(const Uid &diagramKey) const;
public:
void addElement(DElement *element, MDiagram *diagram);
void removeElement(DElement *element, MDiagram *diagram);
DElement *findElement(const Uid &key, const MDiagram *diagram) const;
template<class T>
T *findElement(const Uid &key, const MDiagram *diagram) const
{
return dynamic_cast<T *>(findElement(key, diagram));
}
bool hasDelegate(const MElement *modelElement, const MDiagram *diagram) const;
DElement *findDelegate(const MElement *modelElement, const MDiagram *diagram) const;
template<class T>
T *findDelegate(const MElement *modelElement, const MDiagram *diagram) const
{
return dynamic_cast<T *>(findDelegate(modelElement, diagram));
}
void startUpdateElement(DElement *element, MDiagram *diagram, UpdateAction updateAction);
void finishUpdateElement(DElement *element, MDiagram *diagram, bool cancelled);
void breakUndoChain();
DContainer cutElements(const DSelection &diagramSelection, MDiagram *diagram);
DContainer copyElements(const DSelection &diagramSelection, const MDiagram *diagram);
void pasteElements(const DContainer &diagramContainer, MDiagram *diagram);
void deleteElements(const DSelection &diagramSelection, MDiagram *diagram);
private:
void onBeginResetModel();
void onEndResetModel();
void onBeginUpdateObject(int row, const MObject *parent);
void onEndUpdateObject(int row, const MObject *parent);
void onBeginInsertObject(int row, const MObject *owner);
void onEndInsertObject(int row, const MObject *owner);
void onBeginRemoveObject(int row, const MObject *parent);
void onEndRemoveObject(int row, const MObject *parent);
void onBeginMoveObject(int formerRow, const MObject *formerOwner);
void onEndMoveObject(int row, const MObject *owner);
void onBeginUpdateRelation(int row, const MObject *owner);
void onEndUpdateRelation(int row, const MObject *owner);
void onBeginRemoveRelation(int row, const MObject *owner);
void onEndRemoveRelation(int row, const MObject *owner);
void onBeginMoveRelation(int formerRow, const MObject *formerOwner);
void onEndMoveRelation(int row, const MObject *owner);
void deleteElements(const DSelection &diagramSelection, MDiagram *diagram,
const QString &commandLabel);
DElement *findElementOnAnyDiagram(const Uid &uid);
void removeObjects(MObject *modelObject);
void removeRelations(MRelation *modelRelation);
void removeRelations(DElement *element, MDiagram *diagram);
void renewElementKey(DElement *element, QHash<Uid, Uid> *renewedKeys);
void updateRelationKeys(DRelation *relation, const QHash<Uid, Uid> &renewedKeys);
void updateElementFromModel(DElement *element, const MDiagram *diagram, bool emitUpdateSignal);
void diagramModified(MDiagram *diagram);
DReferences simplify(const DSelection &diagramSelection, const MDiagram *diagram);
MElement *delegatedElement(const DElement *element) const;
bool isDelegatedElementOnDiagram(const DElement *element, const MDiagram *diagram) const;
bool areRelationEndsOnDiagram(const DRelation *relation, const MDiagram *diagram) const;
void updateAllDiagramsList();
ModelController *m_modelController;
UndoController *m_undoController;
QList<MDiagram *> m_allDiagrams;
};
} // namespace qmt
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