QGIS API Documentation  3.8.0-Zanzibar (11aff65)
qgsfieldformatterregistry.cpp
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1 /***************************************************************************
2  qgsfieldformatterregistry.cpp - QgsFieldFormatterRegistry
3 
4  ---------------------
5  begin : 2.12.2016
6  copyright : (C) 2016 by Matthias Kuhn
7  email : matthias@opengis.ch
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 "qgsfieldformatter.h"
18 
24 #include "qgslistfieldformatter.h"
25 #include "qgsrangefieldformatter.h"
27 
28 
30  : QObject( parent )
31 {
39 
40  mFallbackFieldFormatter = new QgsFallbackFieldFormatter();
41 }
42 
44 {
45  qDeleteAll( mFieldFormatters );
46  delete mFallbackFieldFormatter;
47 }
48 
50 {
51  mFieldFormatters.insert( formatter->id(), formatter );
52  emit fieldFormatterAdded( formatter );
53 }
54 
56 {
57  removeFieldFormatter( formatter->id() );
58 }
59 
61 {
62  if ( QgsFieldFormatter *formatter = mFieldFormatters.take( id ) )
63  {
64  emit fieldFormatterRemoved( formatter );
65  delete formatter;
66  }
67 }
68 
70 {
71  return mFieldFormatters.value( id, mFallbackFieldFormatter );
72 }
73 
75 {
76  return mFallbackFieldFormatter;
77 }
Field formatter for a key value field.
Field formatter for a ValueMap field.
void removeFieldFormatter(QgsFieldFormatter *formatter)
Remove a field formatter from the registry.
Field formatter for a list field.
A default fallback field formatter in case no specialized field formatter is defined.
virtual QString id() const =0
Returns a unique id for this field formatter.
void addFieldFormatter(QgsFieldFormatter *formatter)
They will take precedence in order of adding them.
void fieldFormatterAdded(QgsFieldFormatter *formatter)
Will be emitted after a new field formatter has been added.
Field formatter for a value relation field.
QgsFieldFormatter * fieldFormatter(const QString &id) const
Gets a field formatter by its id.
void fieldFormatterRemoved(QgsFieldFormatter *formatter)
Will be emitted just before a field formatter is removed and deleted.
A field formatter helps to handle and display values for a field.
QgsFieldFormatterRegistry(QObject *parent=nullptr)
You should not normally need to create your own field formatter registry.
Field formatter for a relation reference field.
Field formatter for a date time field.
QgsFieldFormatter * fallbackFieldFormatter() const
Returns a basic fallback field formatter which can be used to represent any field in an unspectacular...
Field formatter for a range (double) field with precision and locale.