this.mainWidget.createWidget( composite );
this.mainWidget.getViewer().setInput( attributeHierarchie );
this.mainWidget.getViewer().getTree().setFocus();
// create actions
this.actionGroup = new EntryEditorWidgetActionGroup( this.mainWidget, this.configuration );
this.actionGroup.fillToolBar( this.mainWidget.getToolBarManager() );
this.actionGroup.fillMenu( this.mainWidget.getMenuManager() );
this.actionGroup.fillContextMenu( this.mainWidget.getContextMenuManager() );
this.actionGroup.activateGlobalActionHandlers();