def testIsDescendant(self):
""" Test checking IsDescendant() """
# "farho" is a great grand-parent of "farrow"
# "porcus" is a sibling of "farho"
db = self.getDB()
num_trees, matched_words = cf.searchDB(db, "farho")
test_top = matched_words[0][1]
num_trees, matched_words = cf.searchDB(db, "farrow")
test_bottom = matched_words[0][1]
num_trees, matched_words = cf.searchDB(db, "porcus")
test_side = matched_words[0][1]
self.assertEqual(cf.isDescendant(test_top, test_bottom), True)
self.assertEqual(cf.isDescendant(test_top, test_side), False)
self.assertEqual(cf.isDescendant(test_bottom, test_top), False)
self.assertEqual(cf.isDescendant(test_bottom, test_side), False)
def DropTreeItem(self, event):
""" Finish a drop-and-drop for the tree """
self._drop_node = self.treebox.GetPyData(event.GetItem())
# Can't drop onto a child of the self._drag_node (infinite loop)
if cf.isDescendant(self._drag_node, self._drop_node):
event.Veto()
else:
# Okay, move the word
cf.moveWord(self._drag_node, self._drop_node)
# Refresh the tree
self.DisplayTree(self.search_root, self.search_words,
select=self._drop_node)