I'm trying to add a SelectionListener<TreeItem>
on my Tree
using the addSelectionHadler()
method.
For my proof on onSelection(SelectionEvent<TreeIterm> event)
I put a simple Windows.alert()
but it don't do anything: when I select a treeItem that color change but doesn't open the window.
I write the Handler but if you want more code tell me.
Thank you.
class SelHand implements SelectionHandler<TreeItem> {
@Override
public void onSelection(SelectionEvent<TreeItem> event) {
Window.alert(event.getSelectedItem().getText());
}
}
SelHand selezionatore = new SelHand();
tree.addSelectionHandler(selezionatore);
Use the straightforward:
tree.addSelectionHandler(new SelectionHandler<TreeItem>() {
@Override
public void onSelection(SelectionEvent<TreeItem> event) {
Window.alert(event.getSelectedItem().getText());
}
});
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