Custom PropertyEditor / ValueBaseInputCell

[p33t]

I'm trying to write a custom field editor that will translate between Long and String. IE: String representation on screen but field type is a Long.

I've implemented the PropertyEditor (HrMinPropertyEditor) but don't know how to wire it in. My HrMinField is quite clunky as I needed to use a TriggerFieldCell because the generic types inside TextInputCell prevented me from using it.

Do I need to do a subclass of ValueBaseInputCell? That seems strange since my PropertyEditor has all the Long / String conversions. It also looks difficult.

If so, is there a simple example or some documentation I can read?

BTW, my learning project is Maven based and should be easy to fire up if necessary:

1. svn checkout http://subversion.assembla.com/svn/f...lic/learn/gwt/ learn-gwt
2. mvn gwt:run
3. Navigate to GXT | Forms | Time Edit

Thanks in advance,
Pete

[p33t]

Well I managed to get something going using a Converter and a Validator. The code below uses a Builder to construct the UI but you should be able to get the gist...

From my PeriodBeanEditor:

    @Ignore
    TextField hrMinField;

    ConverterEditorAdapter<Long, String, TextField> hrMin;

    @Override
    protected Widget createWidget() {
        FlowLayoutContainer c = new FlowLayoutContainerBuilder()
                .add(new FieldLabelBuilder()
                        .text("Hr Min")
                        .widget(hrMinField = new TextFieldBuilder()
                                .allowBlank(false)
                                .addValidator(HrMinConverter.VALIDATOR)
                                .textField)
                        .fieldLabel)
                .flowLayoutContainer;
        hrMin = new ConverterEditorAdapter(hrMinField, HrMinConverter.INSTANCE);
        return c;
    }

From my HrMinConverter:

public class HrMinConverter implements Converter<Long, String> {
    private static final String RE_STR = "^(-?)(\\d+)(:([0-5]?)(\\d))?$";
    public static final RegExp RE = RegExp.compile(RE_STR);
    public static final String RE_MSG = "Must be in the form '-h:m', '-' and ':m' are optional";
    public static final HrMinConverter INSTANCE = new HrMinConverter();
    public static final RegExValidator VALIDATOR = new RegExValidator(RE_STR, RE_MSG);
...

For what it's worth I'm trying to publish the bean builder generator tool (b-generation) so I can use it in various places.