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ca5c7e2cd4
This commit adds a new mode to the attribute table dialog for searching and filtering features. When activated (using a button on the toolbar or by pressng CTRL+F), the dialog will switch to form view and all widgets are replaced with their search widget wrapper variant. Alongside each widget is a tool button with options for controlling the search/filter behaviour for that field, eg "equal to", "not equal to", "is null", "greater than", etc.., with the options presented matching themselves to the corresponding field and widget type. New buttons appear at the bottom of the form for either selecting matching features (with options for add to selection/remove from selection/select within current selection) or filtering features in the table (with options for adding features to a current filter or further restricting a current filter). Sponsored by SIGE
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/***************************************************************************
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qgsvaluerelationwidgetwrapper.h
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--------------------------------------
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Date : 19.6.2015
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Copyright : (C) 2015 Karolina Alexiou
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Email : carolinegr at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSVALUERELATIONSEARCHWIDGETWRAPPER_H
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#define QGSVALUERELATIONSEARCHWIDGETWRAPPER_H
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#include "qgssearchwidgetwrapper.h"
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#include "qgsvaluerelationwidgetwrapper.h"
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#include <QComboBox>
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#include <QListWidget>
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#include <QLineEdit>
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class QgsValueRelationWidgetFactory;
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/**
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* Wraps a value relation search widget. This widget will offer a combobox with values from another layer
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* referenced by a foreign key (a constraint may be set but is not required on data level).
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* It will be used as a search widget and produces expression to look for in the layer.
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*/
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class GUI_EXPORT QgsValueRelationSearchWidgetWrapper : public QgsSearchWidgetWrapper
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{
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Q_OBJECT
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public:
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typedef QPair < QVariant, QString > ValueRelationItem;
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typedef QVector < ValueRelationItem > ValueRelationCache;
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public:
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explicit QgsValueRelationSearchWidgetWrapper( QgsVectorLayer* vl, int fieldIdx, QWidget* parent = nullptr );
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bool applyDirectly() override;
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QString expression() override;
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bool valid() const override;
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QVariant value() const;
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FilterFlags supportedFlags() const override;
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FilterFlags defaultFlags() const override;
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virtual QString createExpression( FilterFlags flags ) const override;
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public slots:
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virtual void clearWidget() override;
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virtual void setEnabled( bool enabled ) override;
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protected:
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QWidget* createWidget( QWidget* parent ) override;
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void initWidget( QWidget* editor ) override;
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public slots:
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//! Called when current value of search widget changes
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void onValueChanged();
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protected slots:
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void setExpression( QString exp ) override;
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private:
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QComboBox* mComboBox;
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QListWidget* mListWidget;
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QLineEdit* mLineEdit;
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ValueRelationCache mCache;
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QgsVectorLayer* mLayer;
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friend class QgsValueRelationWidgetFactory;
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};
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#endif // QGSVALUERELATIONSEARCHWIDGETWRAPPER_H
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