QGIS API Documentation 3.27.0-Master (f261cc1f8b)
qgskeyvaluefieldformatter.cpp
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1/***************************************************************************
2 qgskeyvaluefieldformatter.cpp - QgsKeyValueFieldFormatter
3
4 ---------------------
5 begin : 3.12.2016
6 copyright : (C) 2016 by Matthias Kuhn
8 ***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
17#include "qgsapplication.h"
18
19#include <QSettings>
20
22{
23 return QStringLiteral( "KeyValue" );
24}
25
26QString QgsKeyValueFieldFormatter::representValue( QgsVectorLayer *layer, int fieldIndex, const QVariantMap &config, const QVariant &cache, const QVariant &value ) const
27{
28 Q_UNUSED( layer )
29 Q_UNUSED( fieldIndex )
30 Q_UNUSED( config )
31 Q_UNUSED( cache )
32
33 if ( value.isNull() )
34 {
36 }
37
38 QString result;
39 const QVariantMap map = value.toMap();
40 for ( QVariantMap::const_iterator i = map.constBegin(); i != map.constEnd(); ++i )
41 {
42 if ( !result.isEmpty() )
43 result.append( ", " );
44 result.append( i.key() ).append( ": " ).append( i.value().toString() );
45 }
46 return result;
47}
static QString nullRepresentation()
This string is used to represent the value NULL throughout QGIS.
QString id() const override
Returns a unique id for this field formatter.
QString representValue(QgsVectorLayer *layer, int fieldIndex, const QVariantMap &config, const QVariant &cache, const QVariant &value) const override
Create a pretty String representation of the value.
Represents a vector layer which manages a vector based data sets.