Bug 167688 Setting number format on multiple elements gives NPE
If I select multiple data elements (for example one in each table cell) using the shift key, then try to 'format number' on those in the properties tab, I get a null pointer exception. An unexpected internal exception occurred.Please see log for detail. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20061211-0630 Error Code:Error.GUIException.invokedByUnexpectedException Error Message:Caused by java.lang.NullPointerException.
UI/org.eclipse.birt.report.designer.ui.views/src/org/eclipse/birt/report/designer/internal/ui/views/attributes/widget/FormatNumberDescriptor.java
/**
	 * Returns the formatString from the page.
	 */
	public String getFormatString( )
	{
		if ( category == null && pattern == null )
		{
			return provider.NUMBER_FORMAT_TYPE_UNFORMATTED;
		}
		if ( category == null )
		{
			category = ""; 
		}
		if ( pattern == null )
		{
			pattern = ""; 
		}
		if ( category.equals( pattern ) )
		{
			return category;
		}
		return category + ":" + pattern; 
	}
	/**
	 * Determines the format string is modified or not from the page.
	 * 
	 * @return true if the format string is modified.
	 */
	public boolean isFormatModified( )
	{