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
{
		JDBCDriverInformation info = null;
		ArrayList infoList = (ArrayList) driverChooserViewer.getInput( );
		
		if ( infoList != null )
		{
			for ( int i = 0; i < infoList.size( ); i++ )
			{
				JDBCDriverInformation jdbcDriverInfo = (JDBCDriverInformation) infoList.get( i );
				if ( jdbcDriverInfo.getDriverClassName( ).equals( driverName ) )
				{
					info = jdbcDriverInfo;
					break;
				}
			}
		}
		return info;
	}
	
	/**
	 * Adds event listeners
	 */
	private void addControlListeners( )
	{
		jdbcUrl.addModifyListener( new ModifyListener( ) {
			public void modifyText( ModifyEvent e )
			{
				if ( !jdbcUrl.isFocusControl( )
						&& jdbcUrl.getText( ).trim( ).length( ) == 0 )
				{