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
if ( hasLoaded )
		{// avoid setting pattern from controls when the typechoicer is
			// selected
			// before loading.
			setFmtPatternFromControls( );
		}
		String category = provider.getCategory4DisplayName( typeChoicer.getText( ) );
		if ( provider.NUMBER_FORMAT_TYPE_UNFORMATTED.equals( category ) )
		{
			setCategory( provider.NUMBER_FORMAT_TYPE_UNFORMATTED );
			setPattern( null );
		}
		else
		{
			FormatNumberPattern fmtPattern = getFmtPattern4Category( category );
			setCategory( fmtPattern.getCategory( ) );
			setPattern( fmtPattern.getPattern( ) );
		}
		doPreview( getCategory( ), getPattern( ) );
	}
	/**
	 * Does preview action.
	 * 
	 * @param patternStr
	 */
	private void doPreview( String category, String patternStr )
	{
		String fmtStr;
		double num;
		if ( getPreviewText( ) == null )