QGIS API Documentation  3.23.0-Master (c716e02dd3)
qgsenumerationwidgetfactory.cpp
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1 /***************************************************************************
2  qgsenumerationwidgetfactory.cpp
3  --------------------------------------
4  Date : 5.1.2014
5  Copyright : (C) 2014 Matthias Kuhn
6  Email : matthias at opengis dot ch
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
15 
17 
19 #include "qgsdummyconfigdlg.h"
20 #include "qgsvectorlayer.h"
21 #include "qgsvectordataprovider.h"
22 
24  : QgsEditorWidgetFactory( name )
25 {
26 }
27 
28 QgsEditorWidgetWrapper *QgsEnumerationWidgetFactory::create( QgsVectorLayer *vl, int fieldIdx, QWidget *editor, QWidget *parent ) const
29 {
30  return new QgsEnumerationWidgetWrapper( vl, fieldIdx, editor, parent );
31 }
32 
34 {
35  return new QgsDummyConfigDlg( vl, fieldIdx, parent, QObject::tr( "Combo box with values that can be used within the column's type. Must be supported by the provider." ) );
36 }
37 
38 
39 unsigned int QgsEnumerationWidgetFactory::fieldScore( const QgsVectorLayer *vl, int fieldIdx ) const
40 {
41  QStringList list;
42  vl->dataProvider()->enumValues( fieldIdx, list );
43  if ( !list.isEmpty() )
44  return 20;
45  else
46  return 0;
47 }
This class should be subclassed for every configurable editor widget type.
Every attribute editor widget needs a factory, which inherits this class.
Manages an editor widget Widget and wrapper share the same parent.
unsigned int fieldScore(const QgsVectorLayer *vl, int fieldIdx) const override
This method allows disabling this editor widget type for a certain field.
QgsEditorWidgetWrapper * create(QgsVectorLayer *vl, int fieldIdx, QWidget *editor, QWidget *parent) const override
Override this in your implementation.
QgsEnumerationWidgetFactory(const QString &name)
Constructor for QgsEnumerationWidgetFactory, where name is a human-readable name for the factory.
QgsEditorConfigWidget * configWidget(QgsVectorLayer *vl, int fieldIdx, QWidget *parent) const override
Override this in your implementation.
virtual void enumValues(int index, QStringList &enumList) const
Returns the possible enum values of an attribute.
Represents a vector layer which manages a vector based data sets.
QgsVectorDataProvider * dataProvider() FINAL
Returns the layer's data provider, it may be nullptr.