QGIS API Documentation  2.99.0-Master (dc72e14)
qgsexpressionbuilderdialog.h
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1 /***************************************************************************
2  qgisexpressionbuilderdialog.h - A generic 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 "ui_qgsexpressionbuilderdialogbase.h"
21 #include "qgshelp.h"
22 #include "qgis_gui.h"
23 
24 
29 class GUI_EXPORT QgsExpressionBuilderDialog : public QDialog, private Ui::QgsExpressionBuilderDialogBase
30 {
31  Q_OBJECT
32 
33  public:
35  const QString &startText = QString(),
36  QWidget *parent SIP_TRANSFERTHIS = nullptr,
37  const QString &key = "generic",
38  const QgsExpressionContext &context = QgsExpressionContext() );
39 
41  QgsExpressionBuilderWidget *expressionBuilder();
42 
43  void setExpressionText( const QString &text );
44 
45  QString expressionText();
46 
52  QgsExpressionContext expressionContext() const;
53 
60  void setExpressionContext( const QgsExpressionContext &context );
61 
63  void setGeomCalculator( const QgsDistanceArea &da );
64 
65  protected:
66 
73  virtual void done( int r ) override;
74 
75  virtual void accept() override;
76 
77  private:
78  QString mRecentKey;
79 
80  private slots:
81  void showHelp();
82 
83 };
84 
85 #endif
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:46
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
A general purpose distance and area calculator, capable of performing ellipsoid based calculations...
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.