Re: drag and drop group

based on html5 spec, the way to disallow a drop is to return true inside dragover

function dragOver(ev) {

    return true;

}

but in GWT, the dragover hander has a void return type. there is no way to return anything.

panel1.addBitlessDomHandler(new DragOverHandler() {

@Override

public void onDragOver(DragOverEvent event) {

                                   // can not return anything.

}

}, DragOverEvent.getType());

It is quite possible, GWT implementation simply messed this one up.

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