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https://github.com/qgis/QGIS.git
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208 lines
6.2 KiB
Plaintext
208 lines
6.2 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/gui/qgsfieldexpressionwidget.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsFieldExpressionWidget : QWidget
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{
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%Docstring
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The QgsFieldExpressionWidget class reates a widget to choose fields and edit expressions
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It contains a combo boxto display the fields and expression and a button to open the expression dialog.
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The combo box is editable, allowing expressions to be edited inline.
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The validity of the expression is checked live on key press, invalid expressions are displayed in red.
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The expression will be added to the model (and the fieldChanged signals emitted)
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only when editing in the line edit is finished (focus lost, enter key pressed).
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%End
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%TypeHeaderCode
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#include "qgsfieldexpressionwidget.h"
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%End
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public:
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explicit QgsFieldExpressionWidget( QWidget *parent /TransferThis/ = 0 );
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%Docstring
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QgsFieldExpressionWidget creates a widget with a combo box to display the fields and expression and a button to open the expression dialog
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%End
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void setExpressionDialogTitle( const QString &title );
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%Docstring
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define the title used in the expression dialog
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%End
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const QString expressionDialogTitle();
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%Docstring
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return the title used for the expression dialog
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:rtype: str
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%End
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void setFilters( QgsFieldProxyModel::Filters filters );
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%Docstring
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setFilters allows fitering according to the type of field
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%End
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void setLeftHandButtonStyle( bool isLeft );
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QgsFieldProxyModel::Filters filters() const;
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%Docstring
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currently used filter on list of fields
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:rtype: QgsFieldProxyModel.Filters
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%End
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void setGeomCalculator( const QgsDistanceArea &da );
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%Docstring
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set the geometry calculator used in the expression dialog
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%End
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QString currentField( bool *isExpression = 0, bool *isValid = 0 ) const;
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%Docstring
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currentField returns the currently selected field or expression if allowed
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\param isExpression determines if the string returned is the name of a field or an expression
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\param isValid determines if the expression (or field) returned is valid
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:rtype: str
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%End
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bool isValidExpression( QString *expressionError = 0 ) const;
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%Docstring
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Return true if the current expression is valid
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:rtype: bool
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%End
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bool isExpression() const;
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%Docstring
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If the content is not just a simple field this method will return true.
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:rtype: bool
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%End
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QString currentText() const;
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%Docstring
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Return the current text that is set in the expression area
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:rtype: str
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%End
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QString asExpression() const;
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%Docstring
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Returns the currently selected field or expression. If a field is currently selected, the returned
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value will be converted to a valid expression referencing this field (ie enclosing the field name with
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appropriate quotations).
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.. versionadded:: 2.14
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:rtype: str
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%End
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QString expression() const;
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%Docstring
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Returns the currently selected field or expression. If a field is currently selected, the returned
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value will be converted to a valid expression referencing this field (ie enclosing the field name with
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appropriate quotations).
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Alias for asExpression()
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.. versionadded:: 3.0
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:rtype: str
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%End
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QgsVectorLayer *layer() const;
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%Docstring
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Returns the layer currently associated with the widget.
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.. seealso:: setLayer()
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:rtype: QgsVectorLayer
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%End
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void registerExpressionContextGenerator( const QgsExpressionContextGenerator *generator );
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%Docstring
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Register an expression context generator class that will be used to retrieve
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an expression context for the widget.
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\param generator A QgsExpressionContextGenerator class that will be used to
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create an expression context when required.
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.. versionadded:: 3.0
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%End
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signals:
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void fieldChanged( const QString &fieldName );
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%Docstring
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the signal is emitted when the currently selected field changes
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%End
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void fieldChanged( const QString &fieldName, bool isValid );
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%Docstring
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fieldChanged signal with indication of the validity of the expression
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%End
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public slots:
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void setLayer( QgsMapLayer *layer );
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%Docstring
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Sets the layer used to display the fields and expression.
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.. seealso:: layer()
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%End
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void setRow( int row );
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%Docstring
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sets the current row in the widget
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%End
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void setField( const QString &fieldName );
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%Docstring
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sets the current field or expression in the widget
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%End
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void setExpression( const QString &expression );
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%Docstring
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Sets the current expression text and if applicable also the field.
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Alias for setField.
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.. versionadded:: 3.0
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%End
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protected slots:
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void editExpression();
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%Docstring
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open the expression dialog to edit the current or add a new expression
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%End
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void expressionEdited( const QString &expression );
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%Docstring
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when expression is edited by the user in the line edit, it will be checked for validity
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%End
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void expressionEditingFinished();
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%Docstring
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when expression has been edited (finished) it will be added to the model
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%End
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void currentFieldChanged();
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void updateLineEditStyle( const QString &expression = QString() );
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%Docstring
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updateLineEditStyle will re-style (color/font) the line edit depending on content and status
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\param expression if expression is given it will be evaluated for the given string, otherwise it takes
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current expression from the model
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%End
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bool isExpressionValid( const QString &expressionStr );
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%Docstring
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:rtype: bool
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%End
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protected:
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virtual void changeEvent( QEvent *event );
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/gui/qgsfieldexpressionwidget.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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