/usr/include/qgis/qgsvaluerelationsearchwidgetwrapper.h is in libqgis-dev 2.14.11+dfsg-3+deb9u1.
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qgsvaluerelationwidgetwrapper.h
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Date : 19.6.2015
Copyright : (C) 2015 Karolina Alexiou
Email : carolinegr 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 QGSVALUERELATIONSEARCHWIDGETWRAPPER_H
#define QGSVALUERELATIONSEARCHWIDGETWRAPPER_H
#include "qgssearchwidgetwrapper.h"
#include "qgsvaluerelationwidgetwrapper.h"
#include <QComboBox>
#include <QListWidget>
#include <QLineEdit>
class QgsValueRelationWidgetFactory;
/**
* Wraps a value relation search widget. This widget will offer a combobox with values from another layer
* referenced by a foreign key (a constraint may be set but is not required on data level).
* It will be used as a search widget and produces expression to look for in the layer.
* \note not available in Python bindings
*/
class GUI_EXPORT QgsValueRelationSearchWidgetWrapper : public QgsSearchWidgetWrapper
{
Q_OBJECT
public:
typedef QPair < QVariant, QString > ValueRelationItem;
typedef QVector < ValueRelationItem > ValueRelationCache;
public:
explicit QgsValueRelationSearchWidgetWrapper( QgsVectorLayer* vl, int fieldIdx, QWidget* parent = nullptr );
bool applyDirectly() override;
QString expression() override;
bool valid() const override;
QVariant value() const;
protected:
QWidget* createWidget( QWidget* parent ) override;
void initWidget( QWidget* editor ) override;
public slots:
void valueChanged();
protected slots:
void setExpression( QString exp ) override;
private:
QComboBox* mComboBox;
QListWidget* mListWidget;
QLineEdit* mLineEdit;
ValueRelationCache mCache;
QgsVectorLayer* mLayer;
friend class QgsValueRelationWidgetFactory;
};
#endif // QGSVALUERELATIONSEARCHWIDGETWRAPPER_H
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