/
qgsrelationreferencewidget.h
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/
qgsrelationreferencewidget.h
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/***************************************************************************
qgsrelationreferencewidget.h
--------------------------------------
Date : 20.4.2013
Copyright : (C) 2013 Matthias Kuhn
Email : matthias at opengis dot ch
***************************************************************************
* *
* 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 QGSRELATIONREFERENCEWIDGET_H
#define QGSRELATIONREFERENCEWIDGET_H
#include "qgsattributeeditorcontext.h"
#include "qgis_sip.h"
#include "qgsfeature.h"
#include <QComboBox>
#include <QToolButton>
#include <QLineEdit>
#include <QHBoxLayout>
#include <QStandardItemModel>
#include "qgis_gui.h"
class QgsAttributeForm;
class QgsVectorLayerTools;
class QgsMapCanvas;
class QgsMessageBar;
class QgsHighlight;
class QgsMapToolIdentifyFeature;
class QgsMessageBarItem;
class QgsFeatureListComboBox;
class QgsCollapsibleGroupBox;
class QLabel;
#ifdef SIP_RUN
% ModuleHeaderCode
// fix to allow compilation with sip that for some reason
// doesn't add this include to the file where the code from
// ConvertToSubClassCode goes.
#include <qgsrelationreferencewidget.h>
% End
#endif
/**
* \ingroup gui
* \class QgsRelationReferenceWidget
*/
class GUI_EXPORT QgsRelationReferenceWidget : public QWidget
{
#ifdef SIP_RUN
SIP_CONVERT_TO_SUBCLASS_CODE
if ( qobject_cast<QgsRelationReferenceWidget *>( sipCpp ) )
sipType = sipType_QgsRelationReferenceWidget;
else
sipType = NULL;
SIP_END
#endif
Q_OBJECT
Q_PROPERTY( bool openFormButtonVisible READ openFormButtonVisible WRITE setOpenFormButtonVisible )
public:
enum CanvasExtent
{
Fixed,
Pan,
Scale
};
explicit QgsRelationReferenceWidget( QWidget *parent SIP_TRANSFERTHIS );
~QgsRelationReferenceWidget() override;
void setRelation( const QgsRelation &relation, bool allowNullValue );
void setRelationEditable( bool editable );
//! this sets the related feature using from the foreign key
void setForeignKey( const QVariant &value );
//! returns the related feature foreign key
QVariant foreignKey() const;
void setEditorContext( const QgsAttributeEditorContext &context, QgsMapCanvas *canvas, QgsMessageBar *messageBar );
//! determines if the form of the related feature will be shown
bool embedForm() { return mEmbedForm; }
void setEmbedForm( bool display );
//! determines if the foreign key is shown in a combox box or a read-only line edit
bool readOnlySelector() { return mReadOnlySelector; }
void setReadOnlySelector( bool readOnly );
//! determines if the widget offers the possibility to select the related feature on the map (using a dedicated map tool)
bool allowMapIdentification() { return mAllowMapIdentification; }
void setAllowMapIdentification( bool allowMapIdentification );
//! If the widget will order the combobox entries by value
bool orderByValue() { return mOrderByValue; }
//! Sets if the widget will order the combobox entries by value
void setOrderByValue( bool orderByValue );
//! Sets the fields for which filter comboboxes will be created
void setFilterFields( const QStringList &filterFields );
//! determines the open form button is visible in the widget
bool openFormButtonVisible() { return mOpenFormButtonVisible; }
void setOpenFormButtonVisible( bool openFormButtonVisible );
/**
* Determines if the filters are chained
*
* \returns TRUE if filters are chained
*/
bool chainFilters() const { return mChainFilters; }
/**
* Set if filters are chained.
* Chained filters restrict the option of subsequent filters based on the selection of a previous filter.
*
* \param chainFilters If chaining should be enabled
*/
void setChainFilters( bool chainFilters );
/**
* Returns the related feature (from the referenced layer)
* if no feature is related, it returns an invalid feature
*/
QgsFeature referencedFeature() const;
/**
* Sets the widget to display in an indeterminate "mixed value" state.
* \since QGIS 2.16
*/
void showIndeterminateState();
/**
* Determines if a button for adding new features should be shown.
*
* \since QGIS 2.16
*/
bool allowAddFeatures() const;
/**
* Determines if a button for adding new features should be shown.
*
* \since QGIS 2.16
*/
void setAllowAddFeatures( bool allowAddFeatures );
public slots:
//! open the form of the related feature in a new dialog
void openForm();
//! activate the map tool to select a new related feature on the map
void mapIdentification();
//! unset the currently related feature
void deleteForeignKey();
protected:
void showEvent( QShowEvent *e ) override;
void init();
signals:
void foreignKeyChanged( const QVariant & );
private slots:
void highlightActionTriggered( QAction *action );
void deleteHighlight();
void comboReferenceChanged( int index );
void featureIdentified( const QgsFeature &feature );
void unsetMapTool();
void mapToolDeactivated();
void filterChanged();
void addEntry();
void updateAddEntryButton();
/**
* Updates the FK index as soon as the underlying model is updated when
* the chainFilter option is activated.
*/
void updateIndex();
private:
void highlightFeature( QgsFeature f = QgsFeature(), CanvasExtent canvasExtent = Fixed );
void updateAttributeEditorFrame( const QgsFeature &feature );
void disableChainedComboBoxes( const QComboBox *cb );
void emitForeignKeyChanged( const QVariant &foreignKey );
// initialized
QgsAttributeEditorContext mEditorContext;
QgsMapCanvas *mCanvas = nullptr;
QgsMessageBar *mMessageBar = nullptr;
QVariant mForeignKey;
QgsFeature mFeature;
// Index of the referenced layer key
int mReferencedFieldIdx = -1;
QString mReferencedField;
int mReferencingFieldIdx = -1;
bool mAllowNull = true;
QgsHighlight *mHighlight = nullptr;
QgsMapToolIdentifyFeature *mMapTool = nullptr;
QgsMessageBarItem *mMessageBarItem = nullptr;
QString mRelationName;
QgsAttributeForm *mReferencedAttributeForm = nullptr;
QgsVectorLayer *mReferencedLayer = nullptr;
QgsVectorLayer *mReferencingLayer = nullptr;
QgsFeatureListComboBox *mComboBox = nullptr;
QList<QComboBox *> mFilterComboBoxes;
QWidget *mWindowWidget = nullptr;
bool mShown = false;
QgsRelation mRelation;
bool mIsEditable = true;
QStringList mFilterFields;
QMap<QString, QMap<QString, QSet<QString> > > mFilterCache;
bool mInitialized = false;
// Q_PROPERTY
bool mEmbedForm = false;
bool mReadOnlySelector = false;
bool mAllowMapIdentification = false;
bool mOrderByValue = false;
bool mOpenFormButtonVisible = true;
bool mChainFilters = false;
bool mAllowAddFeatures = false;
// UI
QVBoxLayout *mTopLayout = nullptr;
QToolButton *mMapIdentificationButton = nullptr;
QToolButton *mRemoveFKButton = nullptr;
QToolButton *mOpenFormButton = nullptr;
QToolButton *mHighlightFeatureButton = nullptr;
QToolButton *mAddEntryButton = nullptr;
QAction *mHighlightFeatureAction = nullptr;
QAction *mScaleHighlightFeatureAction = nullptr;
QAction *mPanHighlightFeatureAction = nullptr;
QWidget *mChooserContainer = nullptr;
QWidget *mFilterContainer = nullptr;
QHBoxLayout *mFilterLayout = nullptr;
QgsCollapsibleGroupBox *mAttributeEditorFrame = nullptr;
QVBoxLayout *mAttributeEditorLayout = nullptr;
QLineEdit *mLineEdit = nullptr;
QLabel *mInvalidLabel = nullptr;
friend class TestQgsRelationReferenceWidget;
};
#endif // QGSRELATIONREFERENCEWIDGET_H