Bug 147253 [Context Sensitive] Preferences->Report Design->Data Set Editor, context help button doesn't work when JDBC Data Set get focus
Description: In Preferences->Report Design->Data Set Editor, context help button doesn't work when JDBC Data Set get focus. Steps to reproduce: 1.Select Windows menu 2.Select Preference 3.Select Data set editor 4.Select JDBC Data Set, make sure the focus is on it (Notes: when click on JDBC Data Set the first time, focus isn't on it, you must select it again to set focus on it) 5.Click help button Expected result: Context help shows up Actual resutl: Help button doesn't work, and F1 doesn't work too.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/preference/DateSetPreferencePage.java
new Object[]{new Integer( MAX_MAX_ROW )	} ) );
		
		String defaultMaxSchema = JdbcPlugin.getDefault( )
				.getPluginPreferences( )
				.getString( USER_MAX_NUM_OF_SCHEMA );
		if ( defaultMaxSchema == null || defaultMaxSchema.trim( ).length( ) <= 0 )
		{
			defaultMaxSchema = String.valueOf( DEFAULT_MAX_NUM_OF_SCHEMA );
		}
		maxDisplaySchemaEditor.setStringValue( defaultMaxSchema );
		
		
		maxDisplayTableEditor = new IntegerFieldEditor( USER_MAX_NUM_OF_TABLE_EACH_SCHEMA, "", sqlDataSetGroup ); 
		
		lab = maxDisplayTableEditor.getLabelControl( sqlDataSetGroup );
        lab.setText(JdbcPlugin.getResourceString( "designer.preview.preference.resultset.maxNoOfTable.description" ));
		
		maxDisplayTableEditor.setPage(this);
		maxDisplayTableEditor.setTextLimit( Integer.toString( MAX_MAX_ROW ).length( ) );
		
		maxDisplayTableEditor.setValidateStrategy( StringFieldEditor.VALIDATE_ON_KEY_STROKE );
		maxDisplayTableEditor.setValidRange(0, MAX_MAX_ROW);
		
		maxDisplayTableEditor.setPropertyChangeListener(new IPropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent event) {
                if (event.getProperty().equals(FieldEditor.IS_VALID))
                        setValid(maxDisplayTableEditor.isValid());
            }
        });