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
maxDisplayTableEditor.setStringValue( String.valueOf( DEFAULT_MAX_NUM_OF_TABLE_EACH_SCHEMA));
		super.performDefaults( );
	}
	/*
	 * @see org.eclipse.jface.preference.IPreferencePage#performOk()
	 */
	public boolean performOk( )
	{
		JdbcPlugin.getDefault( )
				.getPluginPreferences( )
				.setValue( USER_MAX_NUM_OF_SCHEMA, maxDisplaySchemaEditor.getStringValue( ) );
		JdbcPlugin.getDefault( )
			.getPluginPreferences( )
			.setValue( USER_MAX_NUM_OF_TABLE_EACH_SCHEMA, maxDisplayTableEditor.getStringValue( ) );
		JdbcPlugin.getDefault( ).savePluginPreferences( );
		
		return true;
	}
	
    /*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.dialogs.DialogPage#setVisible(boolean)
	 */
	public void setVisible( boolean visible )
	{
		super.setVisible( visible );
		getControl( ).setFocus( );
	}
}