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/IReportGraphicConstants.java
public final static String ICON_BORDER_ALL = "All borders"; 
	public final static String ICON_BORDER_BOTTOM = "Bottom border"; 
	public final static String ICON_BORDER_LEFT = "Left border"; 
	public final static String ICON_BORDER_NOBORDER = "No border"; 
	public final static String ICON_BORDER_RIGHT = "Right border"; 
	public final static String ICON_BORDER_TOP = "Top border"; 
	
	public final static String ICON_MISSING_IMG = "Missing image"; 
	
	public final static String ICON_DATA_EXPLORER_VIEW = "Data explorer view"; 
	public final static String ICON_NODE_DATA_SETS = "Data Sets"; 
	public final static String ICON_NODE_DATA_SOURCES = "Data Sources"; 
	public final static String ICON_NODE_PARAMETERS = "Parameters"; 
	public final static String ICON_DATA_COLUMN = "DataColumn"; 
	
	public final static String ICON_AUTOTEXT = "AutoText"; 
	public final static String ICON_AUTOTEXT_PAGE = "Page"; 
	public final static String ICON_AUTOTEXT_DATE = "Date"; 
	public final static String ICON_AUTOTEXT_CREATEDON = "Created on"; 
	public final static String ICON_AUTOTEXT_CREATEDBY = "Created by"; 
	public final static String ICON_AUTOTEXT_FILENAME = "Filename"; 
	public final static String ICON_AUTOTEXT_LAST_PRINTED = "Last printed"; 
	public final static String ICON_AUTOTEXT_PAGEXOFY = "Page X of Y"; 
	public final static String ICON_AUTOTEXT_AUTHOR_PAGE_DATE = "AuthorPageDate";
	public final static String ICON_AUTOTEXT_CONFIDENTIAL_PAGE = "ConfidentalPage";
	
	public final static String ICON_EXPRESSION_BUILDER = "Expression Builder";
	public final static String ICON_EXPRESSION_DATA_TABLE = "DataTable";
	public final static String ICON_EXPRESSION_OPERATOR = "Operator";