CODEWITHSUNDEEP
javadata-bindingeclipse-rcp
HexFlex
HexFlex

Reputation: 271

E4 Databinding for SWT List

I try to bind the items of a SWT List to a List< String> property via Databinding.

My model class:

public class Config extends ModelObject {
    private List<String> tagList;

    public List<String> getTagList() {
        return tagList;
    }

    public void setTagList(List<String> tagList) {
        firePropertyChange("tagList", this.tagList, this.tagList = tagList);
    }
}

My Binding:

...
private List tagList;
...
private void addDataBinding() {
    Config config = ConfigHandler.getInstance().getConfig();

    DataBindingContext ctx = new DataBindingContext();

    IObservableList observableModelTagList = BeanProperties.list(Config.class, "tagList").observe(config);
    IObservableList observableWidgetTagList = WidgetProperties.items().observe(tagList);


    ctx.bindList(observableWidgetTagList, observableModelTagList);
}

As it didn´t work out that way, I tried to use Converters.
It doesn´t work either but at least I could see that if I use tagList.add(x) or tagList.setItems(x) on the tagList Widget nothing is triggered (the convert method isn´t even called).
So I guess WidgetProperties.items() doesn´t work as I expect it to.
I expected it to fire a change everytime anything regarding the items changes so at adding, removal and on a new set.
How do I bind the SWT List to the List Property in my model?

Upvotes: 0

Views: 220

Answers (1)

greg-449
greg-449

Reputation: 111142

You could use ListViewer rather than just List:

ListViewer viewer = new ListViewer(tagList);

IValueProperty displayValue = ... property to display in the list

ViewerSupport.bind(viewer, observableModelTagList, displayValue);

Without a 'displayValue' you could use:

ListViewer viewer = new ListViewer(tagList);

ObservableListContentProvider contentProvider = new ObservableListContentProvider();
viewer.setContentProvider(contentProvider);

viewer.setLabelProvider(new LabelProvider());

viewer.setInput(observableModelTagList);

Upvotes: 1

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