Bug 122045 Template should show blank preview when there is no image
Create a template but do not associate an image with it. Place the template in the templates directory. Now, create a new report design. On the second page of the New Report dialog, select the template that has no image. Actual result: The preview appears as a white rectangle with a small red square in the top left. Expected result: The preview appears as a gray background in the preview image area.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/ReportPlatformUIImages.java
declareImage(
				IReportGraphicConstants.ICON_ATTRIBUTE_TEXT_ALIGN_JUSTIFY,
				ICONS_PATH + OBJ16_PATH + "justified_align.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_TEXT_ALIGN_JUSTIFY
				+ IReportGraphicConstants.DIS, ICONS_PATH + DOBJ16_PATH
				+ "justified_align_disabled.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_TEXT_ALIGN_LEFT,
				ICONS_PATH + OBJ16_PATH + "left_align.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_TEXT_ALIGN_LEFT
				+ IReportGraphicConstants.DIS, ICONS_PATH + DOBJ16_PATH
				+ "left_align_disabled.gif" );
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_TEXT_ALIGN_RIGHT,
				ICONS_PATH + OBJ16_PATH + "right_align.gif" );
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_TEXT_ALIGN_RIGHT
				+ IReportGraphicConstants.DIS, ICONS_PATH + DOBJ16_PATH
				+ "right_align_disabled.gif" );
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_TOP_MARGIN,
				ICONS_PATH + MISC_PATH + "top_margin.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_BOTTOM_MARGIN,
				ICONS_PATH + MISC_PATH + "bottom_margin.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_LEFT_MARGIN,
				ICONS_PATH + MISC_PATH + "left_margin.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_RIGHT_MARGIN,
				ICONS_PATH + MISC_PATH + "right_margin.gif" ); 
		
		
		declareImage( IReportGraphicConstants.ICON_PREVIEW_PARAMETERS,
				ICONS_PATH + PROGRESS_PATH + "params_ecl_show.gif" ); 
		declareImage( IReportGraphicConstants.ICON_PREVIEW_PARAMETERS_HIDE,
				ICONS_PATH + PROGRESS_PATH + "params_ecl_hide.gif" );