Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/ContainerContext.java
{
		
		if ( container.getRoot( ) == null )
			return false;
		
		ContainerContext containerInfo = this;
		while ( containerInfo != null )
		{
			if ( containerInfo.isSlot )
			{
				SlotDefn slotInfo = (SlotDefn) containerInfo.container
						.getDefn( ).getSlot( containerInfo.containerSlotID );
				if ( slotInfo != null && !slotInfo.isManagedByNameSpace( ) )
					return false;
			}
			containerInfo = containerInfo.container.getContainerInfo( );
		}
		return true;
	}
	/**
	 * Gets selector of the given slot of this element. The selector is kind of
	 * predefined style, and its style property value can be applied on contents
	 * of the given slot of this element depending on whether property can be
	 * inherited.
	 * 
	 * @return the selector of the given slot of this element.
	 */
	public String getSelector( )
	{
		ElementDefn defn = (ElementDefn) container.getDefn( );