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Items decorations in a TreeViewer

public class MyLabelProvider extends DecoratingLabelProvider {

    public Image getImage(Object element) {

        Image image = super.getImage(element);

 

        List<Object> images = new ArrayList<Object>(2);

        images.add(image);

        images.add(<Image of the decorator>);

        labelImage = new ComposedImage(images); // This will put the second of the "images" list (the decorator) above the first (the element's image)

 

        return decoratedImage;

    }

    [...]

}

       

TreeViewer treeViewer = new TreeViewer(...);

treeViewer.setLabelProvider(new MyLabelProvider(new LabelProvider()); // new LabelProvider()... or your previous label provider if you have one.