qgsvectorlayerundocommand.h

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/***************************************************************************
    qgsvectorlayerundocommand.h
    ---------------------
    begin                : June 2009
    copyright            : (C) 2009 by Martin Dobias
    email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef QGSVECTORLAYERUNDOCOMMAND_H
#define QGSVECTORLAYERUNDOCOMMAND_H

#include "qgis_core.h"
#include "qgis_sip.h"
#include <QUndoCommand>

#include <QVariant>
#include <QSet>
#include <QList>

#include "qgsfields.h"
#include "qgsfeature.h"

class QgsGeometry;

#include "qgsvectorlayereditbuffer.h"

class CORE_EXPORT QgsVectorLayerUndoCommand : public QUndoCommand
{
  public:

    QgsVectorLayerUndoCommand( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER )
      : mBuffer( buffer )
    {}

    inline QgsVectorLayer *layer() { return mBuffer->L; }

    int id() const override { return -1; }
    bool mergeWith( const QUndoCommand * ) override { return false; }

  protected:
    QgsVectorLayerEditBuffer *mBuffer = nullptr;
};


class CORE_EXPORT QgsVectorLayerUndoCommandAddFeature : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandAddFeature( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, QgsFeature &f );

    void undo() override;
    void redo() override;

  private:
    QgsFeature mFeature;
};


class CORE_EXPORT QgsVectorLayerUndoCommandDeleteFeature : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandDeleteFeature( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, QgsFeatureId fid );

    void undo() override;
    void redo() override;

  private:
    QgsFeatureId mFid;
    QgsFeature mOldAddedFeature;
};

class CORE_EXPORT QgsVectorLayerUndoCommandChangeGeometry : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandChangeGeometry( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, QgsFeatureId fid, const QgsGeometry &newGeom );

    void undo() override;
    void redo() override;
    int id() const override;
    bool mergeWith( const QUndoCommand * ) override;

  private:
    QgsFeatureId mFid;
    QgsGeometry mOldGeom;
    mutable QgsGeometry mNewGeom;
};


class CORE_EXPORT QgsVectorLayerUndoCommandChangeAttribute : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandChangeAttribute( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, QgsFeatureId fid, int fieldIndex, const QVariant &newValue, const QVariant &oldValue );
    void undo() override;
    void redo() override;

  private:
    QgsFeatureId mFid;
    int mFieldIndex;
    QVariant mOldValue;
    QVariant mNewValue;
    bool mFirstChange;
};

class CORE_EXPORT QgsVectorLayerUndoCommandAddAttribute : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandAddAttribute( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, const QgsField &field );

    void undo() override;
    void redo() override;

  private:
    QgsField mField;
    int mFieldIndex;
};

class CORE_EXPORT QgsVectorLayerUndoCommandDeleteAttribute : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandDeleteAttribute( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, int fieldIndex );

    void undo() override;
    void redo() override;

  private:
    int mFieldIndex;
    QString mFieldName;
    bool mProviderField;
    int mOriginIndex;
    QgsField mOldField;
    QVariantMap mOldEditorWidgetConfig;

    QMap<QgsFeatureId, QVariant> mDeletedValues;
    QString mOldName;
};


class CORE_EXPORT QgsVectorLayerUndoCommandRenameAttribute : public QgsVectorLayerUndoCommand
{
  public:

    QgsVectorLayerUndoCommandRenameAttribute( QgsVectorLayerEditBuffer *buffer SIP_TRANSFER, int fieldIndex, const QString &newName );

    void undo() override;
    void redo() override;

  private:
    int mFieldIndex;
    bool mProviderField;
    int mOriginIndex;
    QString mOldName;
    QString mNewName;
};

#endif