QGIS API Documentation  3.26.3-Buenos Aires (65e4edfdad)
qgsrelationreferencewidgetwrapper.h
Go to the documentation of this file.
1 /***************************************************************************
2  qgsrelationreferencewidgetwrapper.h
3  --------------------------------------
4  Date : 20.4.2013
5  Copyright : (C) 2013 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 
16 #ifndef QGSRELATIONREFERENCEWIDGETWRAPPER_H
17 #define QGSRELATIONREFERENCEWIDGETWRAPPER_H
18 
19 #include "qgseditorwidgetwrapper.h"
20 #include "qgis_sip.h"
21 #include "qgis_gui.h"
22 
24 class QgsMapCanvas;
25 class QgsMessageBar;
26 
44 {
45  Q_OBJECT
46  public:
47 
50  int fieldIdx,
51  QWidget *editor,
52  QgsMapCanvas *canvas,
53  QgsMessageBar *messageBar,
54  QWidget *parent SIP_TRANSFERTHIS = nullptr );
55 
56  QWidget *createWidget( QWidget *parent ) override;
57  void initWidget( QWidget *editor ) override;
58  QVariant value() const override;
59  bool valid() const override;
60  void showIndeterminateState() override;
61  QVariantList additionalFieldValues() const override;
62  QStringList additionalFields() const override;
63 
64  public slots:
65  void setEnabled( bool enabled ) override;
66 
67  private slots:
68  void foreignKeysChanged( const QVariantList &values );
69 
70  protected:
71  void updateConstraintWidgetStatus() override;
72 
73  private:
74  void updateValues( const QVariant &val, const QVariantList &additionalValues = QVariantList() ) override;
75 
76  QString mExpression;
77 
78  QgsRelationReferenceWidget *mWidget = nullptr;
79  QgsMapCanvas *mCanvas = nullptr;
80  QgsMessageBar *mMessageBar = nullptr;
81  bool mIndeterminateState;
82  int mBlockChanges = 0;
83 
84 };
85 
86 #endif // QGSRELATIONREFERENCEWIDGETWRAPPER_H
QgsRelationReferenceWidget
Definition: qgsrelationreferencewidget.h:57
qgseditorwidgetwrapper.h
QgsWidgetWrapper::initWidget
virtual void initWidget(QWidget *editor)
This method should initialize the editor widget with runtime data.
Definition: qgswidgetwrapper.cpp:107
QgsWidgetWrapper::valid
virtual bool valid() const =0
Returns true if the widget has been properly initialized.
QgsEditorWidgetWrapper::additionalFieldValues
virtual QVariantList additionalFieldValues() const
Will be used to access the widget's values for potential additional fields handled by the widget.
Definition: qgseditorwidgetwrapper.h:100
QgsMapCanvas
Map canvas is a class for displaying all GIS data types on a canvas.
Definition: qgsmapcanvas.h:89
QgsEditorWidgetWrapper::value
virtual QVariant value() const =0
Will be used to access the widget's value.
QgsEditorWidgetWrapper::additionalFields
virtual QStringList additionalFields() const
Returns the list of additional fields which the editor handles.
Definition: qgseditorwidgetwrapper.h:92
QgsEditorWidgetWrapper
Manages an editor widget Widget and wrapper share the same parent.
Definition: qgseditorwidgetwrapper.h:47
qgis_sip.h
QgsMessageBar
A bar for displaying non-blocking messages to the user.
Definition: qgsmessagebar.h:60
QgsVectorLayer
Represents a vector layer which manages a vector based data sets.
Definition: qgsvectorlayer.h:391
QgsEditorWidgetWrapper::updateConstraintWidgetStatus
virtual void updateConstraintWidgetStatus()
This should update the widget with a visual cue if a constraint status changed.
Definition: qgseditorwidgetwrapper.cpp:105
QgsEditorWidgetWrapper::setEnabled
void setEnabled(bool enabled) override
Is used to enable or disable the edit functionality of the managed widget.
Definition: qgseditorwidgetwrapper.cpp:60
SIP_TRANSFERTHIS
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:53
QgsWidgetWrapper::createWidget
virtual QWidget * createWidget(QWidget *parent)=0
This method should create a new widget with the provided parent.
QgsRelationReferenceWidgetWrapper
Wraps a relation reference widget.
Definition: qgsrelationreferencewidgetwrapper.h:43
QgsEditorWidgetWrapper::showIndeterminateState
virtual void showIndeterminateState()
Sets the widget to display in an indeterminate "mixed value" state.
Definition: qgseditorwidgetwrapper.h:155