QGIS API Documentation  3.4.15-Madeira (e83d02e274)
qgseditorconfigwidget.h
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1 /***************************************************************************
2  qgseditorconfigwidget.h
3  --------------------------------------
4  Date : 24.4.2013
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 QGSEDITORCONFIGWIDGET_H
17 #define QGSEDITORCONFIGWIDGET_H
18 
19 #include <QWidget>
20 #include "qgis.h"
21 #include "qgis_gui.h"
22 
23 #include "qgseditorwidgetwrapper.h"
25 
26 class QgsVectorLayer;
28 
38 class GUI_EXPORT QgsEditorConfigWidget : public QWidget, public QgsExpressionContextGenerator
39 {
40  Q_OBJECT
41  public:
42 
50  explicit QgsEditorConfigWidget( QgsVectorLayer *vl, int fieldIdx, QWidget *parent SIP_TRANSFERTHIS );
51 
57  virtual QVariantMap config() = 0;
58 
64  virtual void setConfig( const QVariantMap &config ) = 0;
65 
71  int field();
72 
78  QgsVectorLayer *layer();
79 
81 
82  signals:
83 
88  void changed();
89 
90  protected:
91 
97  void initializeDataDefinedButton( QgsPropertyOverrideButton *button, QgsWidgetWrapper::Property key );
98 
102  void updateDataDefinedButtons();
103 
107  void updateDataDefinedButton( QgsPropertyOverrideButton *button );
108 
111 
112  private slots:
113 
114  void updateProperty();
115 
116  private:
117  QgsVectorLayer *mLayer = nullptr;
118  int mField;
119 };
120 
121 #endif // QGSEDITORCONFIGWIDGET_H
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:46
This class should be subclassed for every configurable editor widget type.
QgsPropertyCollection mPropertyCollection
Temporary property collection for config widgets.
virtual QgsExpressionContext createExpressionContext() const =0
This method needs to be reimplemented in all classes which implement this interface and return an exp...
A button for controlling property overrides which may apply to a widget.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
Abstract interface for generating an expression context.
A grouped map of multiple QgsProperty objects, each referenced by a integer key value.
Property
Data defined properties for different editor widgets.
Represents a vector layer which manages a vector based data sets.