Bug 135254 "Test connection" should be disabled after cancelling "Manage Drivers" window
Steps to reproduce: 1.New a JDBC data source 2.Before enter Driver class/URL, notice that "Test Connection" is disabled 3.Click "Manage Drivers", and then cancel it Expected result: "Test Connection" is disabled Actual result: "Test Connection" is enabled
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/profile/JDBCSelectionPageHelper.java
{
		if ( driverChooserCombo == null )
			return EMPTY_STRING;
		return getTrimedString(getSelectedDriverClassName( ));
	}
	
	/**
	 * 
	 * @param tobeTrimed
	 * @return
	 */
	private String getTrimedString( String tobeTrimed )
	{
		if( tobeTrimed!= null )
			tobeTrimed = tobeTrimed.trim( );
		return tobeTrimed;
	}
	/**
	 * sort the driver list with ascending order
	 * 
	 * @param driverObj
	 * @return
	 */
	private List sortDriverList( List driverObjList )
	{
		Object[] driverObj = driverObjList.toArray( );
		Arrays.sort( driverObj, new Comparator( ) {
			public int compare( Object o1, Object o2 )
			{
				JDBCDriverInformation it1 = (JDBCDriverInformation) o1;