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/internal/ui/wizards/WizardTemplateChoicePage.java
.getString( "WizardTemplateChoicePage.title.BlankReport" ); 
	private static final String TITLE_DUAL_COLUMN_CHART_LISTING = Messages
			.getString( "WizardTemplateChoicePage.title.DualColumnChartListing" ); 
	private static final String TITLE_DUAL_COLUMN_LISTING = Messages
			.getString( "WizardTemplateChoicePage.title.DualColumnListing" ); 
	private static final String TITLE_FIRST_REPORT = Messages
			.getString( "WizardTemplateChoicePage.title.FirstReport" ); 
	
	
	private static final String DESCRIPTION_SIDE_BY_SIDE_CHART_LISTING = Messages
			.getString( "WizardTemplateChoicePage.message.SideBySideChartListing" ); 
	private static final String DESCRIPTION_CHART_LISTING = Messages
			.getString( "WizardTemplateChoicePage.message.ChartListing" ); 
	private static final String DESCRIPTION_GROUPED_LISTING = Messages
			.getString( "WizardTemplateChoicePage.message.GroupedListing" ); 
	private static final String DESCRIPTION_SIMPLE_LISTING = Messages
			.getString( "WizardTemplateChoicePage.message.SimpleListing" ); 
	private static final String DESCRIPTION_BLANK_REPORT = Messages
			.getString( "WizardTemplateChoicePage.message.BlankReport" ); 
	private static final String DESCRIPTION_DUAL_COLUMN_CHART_LISTING = Messages
			.getString( "WizardTemplateChoicePage.message.DualColumnChartListing" ); 
	private static final String DESCRIPTION_DUAL_COLUMN_LISTING = Messages
			.getString( "WizardTemplateChoicePage.message.DualColumnListing" ); 
	private static final String DESCRIPTION_FIRST_REPORT = Messages
			.getString( "WizardTemplateChoicePage.message.FirstReport" ); 
	private List templateList;
	private ImageCanvas previewCanvas;
	private Button chkBox;
	private Label description;
	public class Template