QGIS API Documentation  2.17.0-Master (dfeb663)
qgsexpressionbuilderdialog.h
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1 /***************************************************************************
2  qgisexpressionbuilderdialog.h - A genric expression string builder dialog.
3  --------------------------------------
4  Date : 29-May-2011
5  Copyright : (C) 2011 by Nathan Woodrow
6  Email : woodrow.nathan at gmail dot com
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 QGSEXPRESSIONBUILDERDIALOG_H
17 #define QGSEXPRESSIONBUILDERDIALOG_H
18 
19 #include <QDialog>
20 #include "qgsdistancearea.h"
21 #include "ui_qgsexpressionbuilderdialogbase.h"
22 
27 class GUI_EXPORT QgsExpressionBuilderDialog : public QDialog, private Ui::QgsExpressionBuilderDialogBase
28 {
29  Q_OBJECT
30 
31  public:
32  QgsExpressionBuilderDialog( QgsVectorLayer* layer, const QString& startText = QString(), QWidget* parent = nullptr, const QString& key = "generic",
33  const QgsExpressionContext& context = QgsExpressionContext() );
34 
36  QgsExpressionBuilderWidget* expressionBuilder();
37 
38  void setExpressionText( const QString& text );
39 
40  QString expressionText();
41 
47  QgsExpressionContext expressionContext() const;
48 
55  void setExpressionContext( const QgsExpressionContext& context );
56 
58  void setGeomCalculator( const QgsDistanceArea & da );
59 
60  protected:
67  virtual void done( int r ) override;
68 
69  virtual void accept() override;
70 
71  private:
72  QString mRecentKey;
73 };
74 
75 #endif
virtual void done(int r)
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
virtual void accept()
General purpose distance and area calculator.
A reusable widget that can be used to build a expression string.
Represents a vector layer which manages a vector based data sets.
A generic dialog for building expression strings.