Range Widget: Only enable for supported data types

And some doxymentation

Author: m-kuhn

src/gui/editorwidgets/core/qgseditorwidgetfactory.h

@@ -107,6 +107,8 @@ class GUI_EXPORT QgsEditorWidgetFactory
      * @param vl        The layer
      * @param fieldIdx  The field index
      * @return          True if the type is supported for this field
+     *
+     * @see isFieldSupported( QgsVectorLayer* vl, ind fieldIdx )
      */
     inline bool supportsField( QgsVectorLayer* vl, int fieldIdx ) { return isFieldSupported( vl, fieldIdx ); }
 
@@ -154,6 +156,8 @@ class GUI_EXPORT QgsEditorWidgetFactory
      * @param vl
      * @param fieldIdx
      * @return True if the field is supported.
+     *
+     * @see supportsField( QgsVectorLayer* vl, fieldIdx )
      */
     virtual bool isFieldSupported( QgsVectorLayer* vl, int fieldIdx );
 

src/gui/editorwidgets/qgsrangewidgetfactory.cpp

@@ -60,7 +60,7 @@ void QgsRangeWidgetFactory::writeConfig( const QgsEditorWidgetConfig& config, QD
   configElement.setAttribute( "Step", config["Step"].toInt() );
 }
 
-bool QgsRangeWidgetFactory::supportsField( QgsVectorLayer* vl, int fieldIdx )
+bool QgsRangeWidgetFactory::isFieldSupported( QgsVectorLayer* vl, int fieldIdx )
 {
   switch ( vl->pendingFields()[fieldIdx].type() )
   {

src/gui/editorwidgets/qgsrangewidgetfactory.h

@@ -31,7 +31,7 @@ class GUI_EXPORT QgsRangeWidgetFactory : public QgsEditorWidgetFactory
     virtual void writeConfig( const QgsEditorWidgetConfig& config, QDomElement& configElement, QDomDocument& doc, const QgsVectorLayer* layer, int fieldIdx );
 
   private:
-    bool supportsField( QgsVectorLayer *vl, int fieldIdx );
+    virtual bool isFieldSupported( QgsVectorLayer *vl, int fieldIdx );
 };
 
 #endif // QGSRANGEWIDGETFACTORY_H