qgsrelationreferencewidgetwrapper.h

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/***************************************************************************
    qgsrelationreferencewidgetwrapper.h
     --------------------------------------
    Date                 : 20.4.2013
    Copyright            : (C) 2013 Matthias Kuhn
    Email                : matthias at opengis dot ch
 ***************************************************************************
 *                                                                         *
 *   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 QGSRELATIONREFERENCEWIDGETWRAPPER_H
#define QGSRELATIONREFERENCEWIDGETWRAPPER_H
 
#include "qgseditorwidgetwrapper.h"
#include "qgis_sip.h"
#include "qgis_gui.h"
 
class QgsRelationReferenceWidget;
class QgsMapCanvas;
class QgsMessageBar;
 
class GUI_EXPORT QgsRelationReferenceWidgetWrapper : public QgsEditorWidgetWrapper
{
    Q_OBJECT
  public:
    explicit QgsRelationReferenceWidgetWrapper( QgsVectorLayer *vl, int fieldIdx, QWidget *editor, QgsMapCanvas *canvas, QgsMessageBar *messageBar, QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    QWidget *createWidget( QWidget *parent ) override;
    void initWidget( QWidget *editor ) override;
    QVariant value() const override;
    bool valid() const override;
    void showIndeterminateState() override;
    QVariantList additionalFieldValues() const override;
    QStringList additionalFields() const override;
 
  public slots:
    void setEnabled( bool enabled ) override;
 
    void parentFormValueChanged( const QString &attribute, const QVariant &value ) override;
 
  private slots:
    void foreignKeysChanged( const QVariantList &values );
 
  protected:
    void updateConstraintWidgetStatus() override;
 
    void widgetValueChanged( const QString &attribute, const QVariant &newValue, bool attributeChanged );
 
  private:
    void aboutToSave() override;
    void updateValues( const QVariant &val, const QVariantList &additionalValues = QVariantList() ) override;
 
    QString mExpression;
 
    QgsRelationReferenceWidget *mWidget = nullptr;
    QgsMapCanvas *mCanvas = nullptr;
    QgsMessageBar *mMessageBar = nullptr;
    bool mIndeterminateState;
    int mBlockChanges = 0;
};
 
#endif // QGSRELATIONREFERENCEWIDGETWRAPPER_H