QGIS API Documentation 3.99.0-Master (2fe06baccd8)
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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
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 ***************************************************************************/
16
18
22#include "qgsfieldformatter.h"
26#include "qgsreadwritelocker.h"
30
31#include "moc_qgsfieldformatterregistry.cpp"
32
47
49{
50 const QgsReadWriteLocker locker( mLock, QgsReadWriteLocker::Write );
51 qDeleteAll( mFieldFormatters );
52
53}
54
56{
58 mFieldFormatters.insert( formatter->id(), formatter );
59 locker.unlock();
60 emit fieldFormatterAdded( formatter );
61}
62
67
69{
70 const QgsReadWriteLocker locker( mLock, QgsReadWriteLocker::Write );
71 if ( QgsFieldFormatter *formatter = mFieldFormatters.take( id ) )
72 {
73 emit fieldFormatterRemoved( formatter );
74 delete formatter;
75 }
76}
77
79{
80 const QgsReadWriteLocker locker( mLock, QgsReadWriteLocker::Read );
81 return mFieldFormatters.value( id, mFallbackFieldFormatter.get() );
82}
83
85{
86 return mFallbackFieldFormatter.get();
87}
Field formatter for a checkbox field.
Field formatter for a date time field.
void fieldFormatterRemoved(QgsFieldFormatter *formatter)
Will be emitted just before a field formatter is removed and deleted.
QgsFieldFormatter * fallbackFieldFormatter() const
Returns a basic fallback field formatter which can be used to represent any field in an unspectacular...
void fieldFormatterAdded(QgsFieldFormatter *formatter)
Will be emitted after a new field formatter has been added.
void removeFieldFormatter(QgsFieldFormatter *formatter)
Remove a field formatter from the registry.
QgsFieldFormatterRegistry(QObject *parent=nullptr)
You should not normally need to create your own field formatter registry.
void addFieldFormatter(QgsFieldFormatter *formatter)
They will take precedence in order of adding them.
QgsFieldFormatter * fieldFormatter(const QString &id) const
Gets a field formatter by its id.
A field formatter helps to handle and display values for a field.
virtual QString id() const =0
Returns a unique id for this field formatter.
Field formatter for a key value field.
Field formatter for a list field.
Field formatter for a range (double) field with precision and locale.
A convenience class that simplifies locking and unlocking QReadWriteLocks.
@ Write
Lock for write.
void unlock()
Unlocks the lock.
Field formatter for a relation reference field.
Field formatter for a ValueMap field.
Field formatter for a value relation field.