qgsvaluerelationwidgetwrapper.h

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/***************************************************************************
    qgsvaluerelationwidgetwrapper.h
     --------------------------------------
    Date                 : 5.1.2014
    Copyright            : (C) 2014 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 QGSVALUERELATIONWIDGETWRAPPER_H
#define QGSVALUERELATIONWIDGETWRAPPER_H
 
#include "qgseditorwidgetwrapper.h"
#include "qgsvaluerelationfieldformatter.h"
#include "qgis_gui.h"
 
class QTableWidget;
class QComboBox;
class QLineEdit;
 
SIP_NO_FILE
 
class QgsValueRelationWidgetFactory;
 
class GUI_EXPORT QgsValueRelationWidgetWrapper : public QgsEditorWidgetWrapper
{
    Q_OBJECT
 
  public:
 
    explicit QgsValueRelationWidgetWrapper( QgsVectorLayer *layer, int fieldIdx, QWidget *editor = nullptr, QWidget *parent = nullptr );
 
    QVariant value() const override;
 
    void showIndeterminateState() override;
 
    void setEnabled( bool enabled ) override;
 
  public slots:
 
    void parentFormValueChanged( const QString &attribute, const QVariant &value ) override;
 
  protected:
    QWidget *createWidget( QWidget *parent ) override;
    void initWidget( QWidget *editor ) override;
    bool valid() const override;
 
    void widgetValueChanged( const QString &attribute, const QVariant &newValue, bool attributeChanged );
 
    void setFeature( const QgsFeature &feature ) override;
 
  private slots:
    void emitValueChangedInternal( const QString &value );
 
  private:
    void updateValues( const QVariant &value, const QVariantList & = QVariantList() ) override;
 
 
    int columnCount() const;
 
    QVariant::Type fkType() const;
 
    void populate( );
 
    QComboBox *mComboBox = nullptr;
    QTableWidget *mTableWidget = nullptr;
    QLineEdit *mLineEdit = nullptr;
 
    QgsValueRelationFieldFormatter::ValueRelationCache mCache;
    QgsVectorLayer *mLayer = nullptr;
 
    bool mEnabled = true;
    QString mExpression;
 
    friend class QgsValueRelationWidgetFactory;
    friend class TestQgsValueRelationWidgetWrapper;
 
};
 
#endif // QGSVALUERELATIONWIDGETWRAPPER_H