I have an issue with DragOverEvent.
At drag start I set my event data to a certain value, as follows:
panel.addDomHandler(new DragStartHandler() {
@Override
public void onDragStart(DragStartEvent event) {
event.setData("text", ResourceWidget.this.resource.getClass().getName());
event.getDataTransfer().setDragImage(panel.getElement(), 10, 10);
... some more code
}
}, DragStartEvent.getType());
On hover and on drop I test the value of the event data as follows:
campaignMap.addDomHandler(new DragOverHandler() {
@Override
public void onDragOver(DragOverEvent event) {
event.preventDefault();
if(event.getData("text") != null) {
(1) ... some more code
}
}
}, DragOverEvent.getType());
campaignMap.addDomHandler(new DropHandler() {
@Override
public void onDrop(DropEvent event) {
event.preventDefault();
if(event.getData("text") != null) {
(2) ... some more code
}
}
}, DropEvent.getType());
The issue is that with the hover event I get always null for my data value whilst for the drop I get the right value, ie (1) is never run and (2) runs.
In the end the drag and drop works, but I would also like to make use of the drag event to display some information based on the value of the data.
Any idea? is this a bug?
Thanks,
Thomas