Examples with TreeListener org.eclipse.swt.events.TreeListener used on opensource projects

Example 11 with TreeListener

use of org.eclipse.swt.events.TreeListener in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_widgets_Tree method test_addTreeListenerTreeCollapsedAdapterLorg_eclipse_swt_events_TreeListener.

@Test
public void test_addTreeListenerTreeCollapsedAdapterLorg_eclipse_swt_events_TreeListener() {
    TreeListener listener = TreeListener.treeCollapsedAdapter(e -> eventOccurred = true);
    tree.addTreeListener(listener);
    eventOccurred = false;
    tree.notifyListeners(SWT.Collapse, new Event());
    assertTrue(eventOccurred);
    eventOccurred = false;
    tree.notifyListeners(SWT.Expand, new Event());
    assertFalse(eventOccurred);
    tree.removeTreeListener(listener);
    eventOccurred = false;
    tree.notifyListeners(SWT.Collapse, new Event());
    assertFalse(eventOccurred);
    tree.notifyListeners(SWT.Expand, new Event());
    assertFalse(eventOccurred);
}