Bug 154832 Wrong node is added to Report Parameters for cascading parameter in Palette view
Description: Wrong node is added to Report Parameters for cascading parameter in Palette view. Steps to reproduce: 1. New a report, add a cascading parameter 2. Switch to Script tab in Editor view, and then switch to Palette view 3. Expand Report Parameters node Expected result: A cascading parameter group is added to Report Parameters node Actual result: Expect a cascading parameter group is added to Report Parameters node, the children of the cascading parameter group are added as scalar parameters
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/internal/ui/editors/script/JSEditor.java
{
			getSourceViewer( ).getTextWidget( ).setEnabled( false );
			cmbExpList.setEnabled( false );
			butReset.setEnabled( false );
			editorUIEnabled = false;
		}
		settingText = true;
		setEditorText( NO_EXPRESSION );
		settingText = false;
	}
	/**
	 * @return Returns the actionRegisty.
	 */
	public ActionRegistry getActionRegistry( )
	{
		if ( actionRegistry == null )
			actionRegistry = new ActionRegistry( );
		return actionRegistry;
	}
	/**
	 * Gets source viewer in the editor
	 * 
	 * @return source viewer
	 */
	public SourceViewer getViewer( )
	{
		return (SourceViewer) getSourceViewer( );
	}
	/*
	 * (non-Javadoc)