[FEATURE] Port editor widgets to new API

Create a new widget for for attribute form

fix #10281
fix #7319
fix #7013
fix #9335
fix #4417

Author: m-kuhn

python/core/qgsvectorlayer.sip

@@ -860,12 +860,6 @@ class QgsVectorLayer : QgsMapLayer
     /** set string representing 'true' for a checkbox (added in 1.4) */
     void setCheckedState( int idx, QString checked, QString notChecked );
 
-    /** return string representing 'true' for a checkbox (added in 1.4)
-     * @note not available in python bindings
-     * FIXME: need SIP binding for QPair<QString, QString>
-     */
-    // QPair<QString, QString> checkedState( int idx );
-
     /** get edit form (added in 1.4) */
     QString editForm();
 
@@ -893,15 +887,15 @@ class QgsVectorLayer : QgsMapLayer
     void setEditFormInit( QString function );
 
     /**access value map*/
-    QMap<QString, QVariant> &valueMap( int idx );
+    QMap<QString, QVariant> valueMap( int idx );
 
     /**access range */
-    RangeData &range( int idx );
+    RangeData range( int idx ) /Deprecated/;
 
     /**access relations
      * @note added in 1.8
      **/
-    ValueRelationData &valueRelation( int idx );
+    ValueRelationData valueRelation( int idx ) /Deprecated/;
 
     /**
      * Get relations, where the foreign key is on this layer
@@ -914,12 +908,12 @@ class QgsVectorLayer : QgsMapLayer
     /**access date format
      * @note added in 1.9
      */
-    QString &dateFormat( int idx );
+    QString dateFormat( int idx ) /Deprecated/;
 
     /**access widget size for photo and webview widget
      * @note added in 1.9
      */
-    QSize &widgetSize( int idx );
+    QSize widgetSize( int idx ) /Deprecated/;
 
     /**is edit widget editable
      * @note added in 1.9

python/gui/attributetable/qgsdualview.sip

@@ -124,11 +124,6 @@ class QgsDualView : QStackedWidget
      */
     bool saveEditChanges();
 
-    /**
-     * Update the shown feature if an attribute changed
-     */
-    void reloadAttribute( const int& attribute );
-
 
   signals:
     /**

python/gui/editorwidgets/core/qgseditorwidgetfactory.sip

@@ -23,12 +23,122 @@ class QgsEditorWidgetFactory
 %End
 
   public:
+    /**
+     * Constructor
+     *
+     * @param name A human readable name for this widget type
+     */
     QgsEditorWidgetFactory( const QString& name );
+
     virtual ~QgsEditorWidgetFactory();
-    virtual QgsEditorWidgetWrapper* create( QgsVectorLayer* vl, int fieldIdx, QWidget* editor, QWidget* parent ) const = 0 /Factory/;
-    virtual QgsEditorConfigWidget* configWidget( QgsVectorLayer* vl, int fieldIdx, QWidget* parent ) const = 0 /Factory/;
+
+    /**
+     * Override this in your implementation.
+     * Create a new editor widget wrapper. Call {@link QgsEditorWidgetRegistry::create()}
+     * instead of calling this method directly.
+     *
+     * @param vl       The vector layer on which this widget will act
+     * @param fieldIdx The field index on which this widget will act
+     * @param editor   An editor widget if already existent. If NULL is provided, a new widget will be created.
+     * @param parent   The parent for the wrapper class and any created widget.
+     *
+     * @return         A new widget wrapper
+     */
+    virtual QgsEditorWidgetWrapper* create( QgsVectorLayer* vl, int fieldIdx, QWidget* editor, QWidget* parent ) const = 0;
+
+    /**
+     * Return The human readable identifier name of this widget type
+     *
+     * @return a name
+     */
+    QString name();
+
+    /**
+     * Override this in your implementation.
+     * Create a new configuration widget for this widget type.
+     *
+     * @param vl       The layer for which the widget will be created
+     * @param fieldIdx The field index for which the widget will be created
+     * @param parent   The parent widget of the created config widget
+     *
+     * @return         A configuration widget
+     */
+    virtual QgsEditorConfigWidget* configWidget( QgsVectorLayer* vl, int fieldIdx, QWidget* parent ) const = 0;
+
+    /**
+     * Read the config from an XML file and map it to a proper {@link QgsEditorWidgetConfig}.
+     *
+     * @param configElement The configuration element from the project file
+     * @param layer         The layer for which this configuration applies
+     * @param fieldIdx      The field on the layer for which this configuration applies
+     *
+     * @return A configuration object. This will be passed to your widget wrapper later on
+     */
+    QgsEditorWidgetConfig readEditorConfig( const QDomElement& configElement, QgsVectorLayer* layer, int fieldIdx );
+
+    /**
+     * Serialize your configuration and save it in a xml doc.
+     *
+     * @param config        The configuration to serialize
+     * @param configElement The element, where you can write your configuration into
+     * @param doc           The document. You can use this to create new nodes
+     * @param layer         The layer for which this configuration applies
+     * @param fieldIdx      The field on the layer for which this configuration applies
+     */
+    virtual void writeConfig( const QgsEditorWidgetConfig& config, QDomElement& configElement, QDomDocument& doc, const QgsVectorLayer* layer, int fieldIdx );
+
+    /**
+     * Check if this editor widget type supports a certain field.
+     *
+     * @param vl        The layer
+     * @param fieldIdx  The field index
+     * @return          True if the type is supported for this field
+     */
+    bool supportsField( QgsVectorLayer* vl, int fieldIdx );
+
+    /**
+     * Create a pretty String representation of the value.
+     *
+     * @param vl        The vector layer.
+     * @param fieldIdx  The index of the field.
+     * @param config    The editor widget config.
+     * @param value     The value to represent.
+     *
+     * @return By default the string representation of the provided value.
+     */
+    virtual QString representValue( QgsVectorLayer* vl, int fieldIdx, const QgsEditorWidgetConfig& config, const QVariant& cache, const QVariant& value ) const;
+
+    /**
+     * Create a cache for a given field.
+     *
+     * @param vl        The vector layer.
+     * @param fieldIdx  The index of the field.
+     * @param config    The editor widget config.
+     *
+     * @return The default implementation returns an invalid QVariant
+     */
+    virtual QVariant createCache( QgsVectorLayer* vl, int fieldIdx, const QgsEditorWidgetConfig& config );
+
+  private:
+    /**
+     * Read the config from an XML file and map it to a proper {@link QgsEditorWidgetConfig}.
+     *
+     * @param configElement The configuration element from the project file
+     * @param layer         The layer for which this configuration applies
+     * @param fieldIdx      The field on the layer for which this configuration applies
+     *
+     * @return A configuration object. This will be passed to your widget wrapper later on
+     */
     virtual QgsEditorWidgetConfig readConfig( const QDomElement& configElement, QgsVectorLayer* layer, int fieldIdx );
-    virtual void writeConfig( const QgsEditorWidgetConfig& config, QDomElement& configElement, const QDomDocument& doc, const QgsVectorLayer* layer, int fieldIdx );
 
-    virtual QString name();
+    /**
+     * This method allows to disable this editor widget type for a certain field.
+     * By default, it returns true for all fields.
+     * Reimplement this if you only support certain fields.
+     *
+     * @param vl
+     * @param fieldIdx
+     * @return True if the field is supported.
+     */
+    virtual bool isFieldSupported( QgsVectorLayer* vl, int fieldIdx );
 };

python/gui/editorwidgets/core/qgseditorwidgetwrapper.sip

@@ -27,7 +27,8 @@ class QgsEditorWidgetWrapper : QObject
     QVariant config( QString key );
 
     QgsVectorLayer* layer();
-    int field();
+    QgsField field();
+    int fieldIdx();
 
   protected:
     virtual QWidget* createWidget( QWidget* parent ) = 0 /Factory/;

python/gui/gui.sip

@@ -15,6 +15,8 @@
 %Include qgsattributeeditor.sip
 %Include qgsattributeeditorcontext.sip
 %Include qgsattributedialog.sip
+%Include qgsattributeform.sip
+%Include qgsattributeforminterface.sip
 %Include qgsbusyindicatordialog.sip
 %Include qgscollapsiblegroupbox.sip
 %Include qgscolorbutton.sip

python/gui/qgsattributedialog.sip

@@ -61,5 +61,4 @@ class QgsAttributeDialog : QObject
     int exec();
     void show();
 
-    void dialogDestroyed();
 };

python/gui/qgsattributeeditor.sip

@@ -31,48 +31,6 @@ class QgsAttributeEditor : QObject
      */
     static QWidget* createAttributeEditor( QWidget* parent, QWidget* editor, QgsVectorLayer* vl, int idx, const QVariant& value, QgsAttributeEditorContext& context ) /Factory/;
 
-    /**
-     * Creates a widget form a QgsAttributeEditorElement definition. Will recursively generate containers and widgets.
-     * @param widgetDef The definition for the widget
-     * @param parent The parent object
-     * @param vl The vector layer to use as data source
-     * @param feat The feature to create the widget for
-     * @param context the context used for the created attribute editor
-     * @param [out] labelText An optional label text will be written into the referenced QString. It will be set to
-     *        a QString::null value if no label should be shown
-     * @param [out] labelOnTop Will be set to true if the label should be placed on top of the field.
-     *        If set to false, the label should be shown left or right of the field
-     *
-     */
-    static QWidget *createWidgetFromDef( const QgsAttributeEditorElement* widgetDef, QWidget* parent, QgsVectorLayer* vl, const QgsFeature &feat, QgsAttributeEditorContext& context, QString& labelText, bool& labelOnTop ) /Factory/;
-
     static bool retrieveValue( QWidget *widget, QgsVectorLayer *vl, int idx, QVariant &value );
     static bool setValue( QWidget *widget, QgsVectorLayer *vl, int idx, const QVariant &value );
-
-  public slots:
-    void selectFileName();
-    void selectDate();
-    void loadUrl( const QString & );
-    void loadPixmap( const QString & );
-    void updateUrl();
-    void openUrl();
-    void updateColor();
-};
-
-class QgsStringRelay : QObject
-{
-%TypeHeaderCode
-#include "qgsattributeeditor.h"
-%End
-  public:
-    QgsStringRelay( QObject* parent = 0 );
-
-    void appendProxy( QWidget* proxy );
-
-  public slots:
-    void changeText();
-    void changeText( QString str );
-
-  signals:
-    void textChanged( QString );
 };

python/gui/qgsattributeeditorcontext.sip

@@ -12,11 +12,6 @@ class QgsAttributeEditorContext
   public:
     QgsAttributeEditorContext();
 
-    QWidget* proxyWidget( QgsVectorLayer* vl, int fieldIdx );
-    //! @note not available in python bindings
-    // void addProxyWidgets( QgsVectorLayer* vl, QMap<int, QWidget*> proxyWidgets );
-    void addProxyWidget( QgsVectorLayer* vl, int idx, QWidget* widget );
-
     void setDistanceArea( const QgsDistanceArea& distanceArea );
     const QgsDistanceArea& distanceArea();
 

python/gui/qgsattributeform.sip

@@ -0,0 +1,47 @@
+/***************************************************************************
+    qgsattributeform.h
+     --------------------------------------
+    Date                 : 3.5.2014
+    Copyright            : (C) 2014 Matthias Kuhn
+    Email                : matthias dot kuhn at gmx 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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+class QgsAttributeForm : QWidget
+{
+%TypeHeaderCode
+#include <qgsattributeform.h>
+%End
+
+  public:
+    explicit QgsAttributeForm( QgsVectorLayer* vl, const QgsFeature feature = QgsFeature(), QgsAttributeEditorContext context = QgsAttributeEditorContext(), QWidget *parent = 0 );
+    ~QgsAttributeForm();
+
+    const QgsFeature& feature();
+
+    void hideButtonBox();
+
+    void showButtonBox();
+
+  signals:
+    /**
+     * Notifies about changes of attributes
+     *
+     * @param attribute The name of the attribute that changed.
+     * @param value     The new value of the attribute.
+     */
+    void attributeChanged( QString attribute, const QVariant& value );
+
+  public slots:
+    void changeAttribute( const QString& field, const QVariant& value );
+    void setFeature( const QgsFeature& feature );
+    bool save();
+    void accept();
+    void resetValues();
+};

python/gui/qgsattributeforminterface.sip

@@ -0,0 +1,33 @@
+/***************************************************************************
+    qgsattributeforminterface.sip
+     --------------------------------------
+    Date                 : 12.5.2014
+    Copyright            : (C) 2014 Matthias Kuhn
+    Email                : matthias dot kuhn at gmx 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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+class QgsAttributeFormInterface
+{
+%TypeHeaderCode
+#include <qgsattributeforminterface.h>
+%End
+  public:
+    explicit QgsAttributeFormInterface( QgsAttributeForm* form );
+
+    virtual bool acceptChanges( const QgsFeature& feat );
+
+    virtual void initForm();
+
+    virtual void featureChanged();
+
+    QgsAttributeForm* form();
+
+    const QgsFeature& feature();
+};

src/app/CMakeLists.txt

@@ -11,7 +11,6 @@ SET(QGIS_APP_SRCS
   qgsannotationwidget.cpp
   qgsattributeactiondialog.cpp
   qgsattributetypedialog.cpp
-  qgsattributetypeloaddialog.cpp
   qgsattributetabledialog.cpp
   qgsbookmarks.cpp
   qgsbrowserdockwidget.cpp
@@ -164,7 +163,6 @@ SET (QGIS_APP_MOC_HDRS
   qgsannotationwidget.h
   qgsattributeactiondialog.h
   qgsattributetypedialog.h
-  qgsattributetypeloaddialog.h
   qgsattributetabledialog.h
   qgsbookmarks.h
   qgsbrowserdockwidget.h