qgsexpressionbuilderdialog.h

Go to the documentation of this file.

/***************************************************************************
    qgisexpressionbuilderdialog.h - A generic expression string builder dialog.
     --------------------------------------
    Date                 :  29-May-2011
    Copyright            : (C) 2011 by Nathan Woodrow
    Email                : woodrow.nathan at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef QGSEXPRESSIONBUILDERDIALOG_H
#define QGSEXPRESSIONBUILDERDIALOG_H

#include <QDialog>
#include "ui_qgsexpressionbuilderdialogbase.h"
#include "qgshelp.h"
#include "qgis_gui.h"


class GUI_EXPORT QgsExpressionBuilderDialog : public QDialog, private Ui::QgsExpressionBuilderDialogBase
{
    Q_OBJECT

    Q_PROPERTY( bool allowEvalErrors READ allowEvalErrors WRITE setAllowEvalErrors NOTIFY allowEvalErrorsChanged )

  public:
    QgsExpressionBuilderDialog( QgsVectorLayer *layer,
                                const QString &startText = QString(),
                                QWidget *parent SIP_TRANSFERTHIS = nullptr,
                                const QString &key = "generic",
                                const QgsExpressionContext &context = QgsExpressionContext() );

    QgsExpressionBuilderWidget *expressionBuilder();

    void setExpressionText( const QString &text );

    QString expressionText();

    QgsExpressionContext expressionContext() const;

    void setExpressionContext( const QgsExpressionContext &context );

    void setGeomCalculator( const QgsDistanceArea &da );

    bool allowEvalErrors() const;

    void setAllowEvalErrors( bool allowEvalErrors );

  signals:

    void allowEvalErrorsChanged();

  protected:

    void done( int r ) override;

    void accept() override;

  private:
    QString mRecentKey;
    bool mAllowEvalErrors = false;

  private slots:
    void showHelp();
    void syncOkButtonEnabledState();

};

// clazy:excludeall=qstring-allocations

#endif