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