Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/palette/BasePaletteFactory.java
return false;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.designer.internal.ui.editors.schematic.tools.AbstractToolHandleExtends#preHandleMouseDown()
		 */
		public boolean preHandleMouseDown( )
		{
			
			return false;
		}
	}
	/**
	 * Provides element building support for Image element.
	 */
	public static class ImageToolExtends extends AbstractToolHandleExtends
	{
		private List dataSetList = new ArrayList( );
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.designer.internal.ui.editors.schematic.tools.IToolHandleExtends#preHandleMouseDown()
		 */
		public boolean preHandleMouseUp( )
		{
			CreateRequest request = getRequest( );
			DesignElementHandle desginElementHandle = (DesignElementHandle) ( getTargetEditPart( ).getModel( ) );
			dataSetList = DEUtil.getDataSetList( desginElementHandle );
			if ( IReportElementConstants.REPORT_ELEMENT_IMAGE.equalsIgnoreCase( (String) request.getNewObjectType( ) ) )