QGIS API Documentation 3.39.0-Master (bca3cdb6021)
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qgsrelationwidgetregistry.cpp
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1/***************************************************************************
2 qgsrelationwidgetregistry.h
3 ----------------------
4 begin : October 2020
5 copyright : (C) 2020 by Ivan Ivanov
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
20
27
29{
30 qDeleteAll( mRelationWidgetFactories );
31 mRelationWidgetFactories.clear();
32}
33
35{
36 if ( !widgetFactory )
37 return;
38
39 if ( mRelationWidgetFactories.contains( widgetFactory->type() ) )
40 return;
41
42 mRelationWidgetFactories.insert( widgetFactory->type(), widgetFactory );
43}
44
45void QgsRelationWidgetRegistry::removeRelationWidget( const QString &widgetType )
46{
47 // protect the default relation editor widget from removing, so the user has at least one relation widget type
48 if ( widgetType == mDefaultWidgetType )
49 return;
50
51 mRelationWidgetFactories.remove( widgetType );
52}
53
55{
56 return mRelationWidgetFactories.keys();
57}
58
59void QgsRelationWidgetRegistry::setDefaultWidgetType( const QString &defaultWidgetType )
60{
61 if ( !mRelationWidgetFactories.contains( defaultWidgetType ) )
62 return;
63
64 mDefaultWidgetType = defaultWidgetType;
65}
66
68{
69 return mDefaultWidgetType;
70}
71
72QMap<QString, QgsAbstractRelationEditorWidgetFactory *> QgsRelationWidgetRegistry::factories() const
73{
74 return mRelationWidgetFactories;
75}
76
77QgsAbstractRelationEditorWidget *QgsRelationWidgetRegistry::create( const QString &widgetType, const QVariantMap &config, QWidget *parent ) const
78{
79 if ( ! mRelationWidgetFactories.contains( widgetType ) )
80 return nullptr;
81
82 return mRelationWidgetFactories.value( widgetType )->create( config, parent );
83}
84
85QgsAbstractRelationEditorConfigWidget *QgsRelationWidgetRegistry::createConfigWidget( const QString &widgetType, const QgsRelation &relation, QWidget *parent ) const
86{
87 if ( ! mRelationWidgetFactories.contains( widgetType ) )
88 return nullptr;
89
90 return mRelationWidgetFactories.value( widgetType )->configWidget( relation, parent );
91}
This class should be subclassed for every configurable relation widget type.
Factory class for creating relation widgets and their corresponding config widgets.
virtual QString type() const =0
Returns the machine readable identifier name of this widget type.
Base class to build new relation widgets.
Factory class for creating a relation editor widget and the respective config widget.
QString type() const override
Returns the machine readable identifier name of this widget type.
void setDefaultWidgetType(const QString &widgetType)
Sets the default editor widget type.
QMap< QString, QgsAbstractRelationEditorWidgetFactory * > factories() const
Gets access to all registered factories.
void addRelationWidget(QgsAbstractRelationEditorWidgetFactory *widgetFactory)
Adds a new registered relation widgetFactory.
QStringList relationWidgetNames() const
Returns a list of names of registered relation widgets.
QgsAbstractRelationEditorConfigWidget * createConfigWidget(const QString &widgetType, const QgsRelation &relation, QWidget *parent=nullptr) const
Creates a configuration widget.
void removeRelationWidget(const QString &widgetType)
Removes a registered relation widget with given widgetType.
QgsAbstractRelationEditorWidget * create(const QString &widgetType, const QVariantMap &config, QWidget *parent=nullptr) const
Create a relation widget of a given type for a given field.
QString defaultWidgetType() const
Returns the default editor widget type.
Represents a relationship between two vector layers.
Definition qgsrelation.h:44