qgseditorwidgetfactory.h

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/***************************************************************************
    qgseditorwidgetfactory.h
     --------------------------------------
    Date                 : 21.4.2013
    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 QGSEDITORWIDGETFACTORY_H
#define QGSEDITORWIDGETFACTORY_H

#include "qgseditorwidgetwrapper.h"
#include "qgsapplication.h"
#include "qgssearchwidgetwrapper.h"

#include <QDomNode>
#include <QMap>
#include <QString>

class QgsEditorConfigWidget;

class GUI_EXPORT QgsEditorWidgetFactory
{
  public:
    QgsEditorWidgetFactory( const QString& name );

    virtual ~QgsEditorWidgetFactory();

    virtual QgsEditorWidgetWrapper* create( QgsVectorLayer* vl, int fieldIdx, QWidget* editor, QWidget* parent ) const = 0;

    virtual QgsSearchWidgetWrapper* createSearchWidget( QgsVectorLayer* vl, int fieldIdx, QWidget* parent ) const;

    QString name();

    virtual QgsEditorConfigWidget* configWidget( QgsVectorLayer* vl, int fieldIdx, QWidget* parent ) const = 0;

    QgsEditorWidgetConfig readEditorConfig( const QDomElement& configElement, QgsVectorLayer* layer, int fieldIdx );

    virtual void writeConfig( const QgsEditorWidgetConfig& config, QDomElement& configElement, QDomDocument& doc, const QgsVectorLayer* layer, int fieldIdx );

    inline bool supportsField( QgsVectorLayer* vl, int fieldIdx ) { return isFieldSupported( vl, fieldIdx ); }

    virtual QMap<const char*, int> supportedWidgetTypes() { return QMap<const char*, int>(); }

    virtual QString representValue( QgsVectorLayer* vl, int fieldIdx, const QgsEditorWidgetConfig& config, const QVariant& cache, const QVariant& value ) const;

    virtual QVariant createCache( QgsVectorLayer* vl, int fieldIdx, const QgsEditorWidgetConfig& config );

    virtual QgsEditorWidgetConfig readConfig( const QDomElement& configElement, QgsVectorLayer* layer, int fieldIdx );

  private:
    virtual bool isFieldSupported( QgsVectorLayer* vl, int fieldIdx );

  private:
    QString mName;
};

#endif // QGSEDITORWIDGETFACTORY_H