Bug 120918 Usability: Tabs above and below Layout Editor are confusing
In BIRT 2.0 (I'm using M3), the Layout Editor has tabs above and below the editor window to give the developer different views. Top: Normal, Master Page, Source Bottom: Layout, Preview, Script What is not clear initially from the UI is that the bottom choices are only available with the "Normal" top choice. In addition, the "Source" label is not clear -- implication is that this is (programatic) source code. The Usability team should look at this to determine what improvements could be made, but a suggestion would be to flatten this into a top set of tabs only: Report Layout, Master Page, Script, XML Report Design, Preview
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
/**
	 * Get the containable element type list of give slot handle
	 * 
	 * @param slotHandle
	 */
	public static List getElementSupportList( SlotHandle slotHandle )
	{
		return getElementSupportList( slotHandle.getElementHandle( ),
				slotHandle.getSlotID( ) );
	}
	/**
	 * Gets the support list of the given parent element. The slotID is decided
	 * by the parent element.
	 * 
	 * @param parent
	 *            the parent element
	 * @return the the support list of the element
	 */
	public static List getElementSupportList( DesignElementHandle parent )
	{
		int slotID = -1;
		if ( parent instanceof MasterPageHandle )
		{
			slotID = GraphicMasterPageHandle.CONTENT_SLOT;
		}
		return getElementSupportList( parent, slotID );
	}
	/**
	 * Find the position of the element. If the element is null, the position is
	 * last