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#!/usr/bin/python
"""
__version__ = "$Revision: 1.6 $"
__date__ = "$Date: 2004/05/05 16:53:27 $"
"""
from PythonCard import model
# events
# itemActivated, itemExpanding, itemExpanded,
# selectionChanging, selectionChanged
class Minimal(model.Background):
def on_initialize(self, event):
tree = self.components.tree
root = tree.addRoot("1")
tree.setItemHasChildren(root, 1)
tree.selectItem(root)
def on_tree_itemExpanding(self, event):
tree = self.components.tree
item=event.item
# This event can happen twice in the self.Expand call
if tree.isExpanded(item):
return
obj = int(tree.getItemText(item))
if tree.getChildrenCount(item, 0) == 0:
lst = [obj * 2, (obj *2) + 1]
for o in lst:
new_item = tree.appendItem(item, str(o))
tree.setItemHasChildren(new_item, 1)
event.skip()
if __name__ == '__main__':
app = model.Application(Minimal)
app.MainLoop()
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