Bug 194163 Inconsistent behaviors occur when clicking F1 in Data Binding help page [17]
Description: In Data Binding Press "F1" button Build number: 2.2.0.v20070625-0630 Steps: 1.Open chart builder, go to "Select Data" tab 2.Click "Data Binding..." button 3.Press "F1" button 4.Help dialog will be pop up 5.Click nothingness in the "About" menu 5.Press "F1" button again Expected result: page no change. Actual result: the page change to another one. Error log: N/A
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
{
		Iterator iterator = ReportItemUIUtil.getColumnDataBindings( itemHandle );
		ArrayList list = new ArrayList( );
		while ( iterator.hasNext( ) )
		{
			list.add( ( (ComputedColumnHandle) iterator.next( ) ).getName( ) );
		}
		return (String[]) list.toArray( new String[list.size( )] );
	}
	public final List getPreviewData( ) throws ChartException
	{
		return getPreviewRowData( getPreviewHeader( true ), -1, true );
	}
	private String[] getPreviewHeader( boolean isExpression )
			throws ChartException
	{
		String[] exps = getPreviewHeader( );
		if ( isExpression )
		{
			for ( int i = 0; i < exps.length; i++ )
			{
				exps[i] = ChartUIUtil.getExpressionString( exps[i] );
			}
		}
		return exps;
	}
	protected final List getPreviewRowData( String[] columnExpression,
			int rowCount, boolean isStringType ) throws ChartException
	{
		ArrayList dataList = new ArrayList( );