def perform_change(self, change):
if isinstance(change, bind.InsertItem):
if change.item.widget.parent:
raise Exception("Can't add a widget that already has a parent")
if isinstance(self.widget, gtk.Bin) and len(self.children) == 1:
raise Exception("Can't add more than one child to a bin")
self.children.insert(change.index, change.item)
self.widget.add(change.item.widget)
if change.index < (len(self.children) - 1):
self.widget.reorder_child(change.item.widget, change.index)
# Create a ChildPropertyDict for this child
self.child_prop_dicts.insert(change.index, ChildPropertyDict(self.widget, change.item.widget))
# Copy all of the child's current child properties that we know about
for k in self.child_prop_dicts[change.index].keys():
if k in change.item.child_props:
self.child_prop_dicts[change.index][k] = change.item.child_props[k]
# Then bind the child dict to the child's child dict
bind.bind(change.item.child_props, self.child_prop_dicts[change.index])
return lambda: self.perform_change(bind.DeleteItem(change.index))
elif isinstance(change, bind.ReplaceItem):
with bind.Log() as l:
l.add(self.perform_change(bind.DeleteItem(change.index)))
l.add(self.perform_change(bind.InsertItem(change.index, change.item)))
return l
elif isinstance(change, bind.DeleteItem):
item = self.children[change.index]
del self.children[change.index]
# Unbind our ChildPropertyDict from the widget's child dict
bind.unbind(item.child_props, self.child_prop_dicts[change.index])
# Disconnect our ChildPropertyDict and then delete it
self.child_prop_dicts[change.index].disconnect()
del self.child_prop_dicts[change.index]
# Then remove the actual widget
self.widget.remove(item.widget)
return lambda: self.perform_change(bind.InsertItem(change.index, item))
elif isinstance(change, bind.SetValue):
# TODO: Really ought to split this out for other widgets too lazy
# to do any special processing to make use of
with bind.Log() as l:
for n in reversed(range(len(self.children))):
l.add(self.perform_change(bind.DeleteItem(n)))
for i, v in enumerate(change.value):
l.add(self.perform_change(bind.InsertItem(i, v)))
return l
else:
raise TypeError
def __init__(self):
DWidget.__init__(self, gtk.Entry())
bind.key_bind(self, "text", self.props, "text")
bind.key_bind(self, "placeholder", self.props, "placeholder")
self._delayed = bind.DelayController()
bind.bind(self._delayed.model, bind.MemoryValue(""))
bind.bind(self._delayed.view, bind.value_for_dict_key(self, "text"))
bind.bind(self._delayed.model, bind.value_for_dict_key(self, "delayed_text"))
self._delayed.save()
self.widget.connect("focus-out-event", self._save_and_false)
self.widget.connect("activate", self._save_and_false)
self.widget.connect("key-press-event", self._key_press)
def __init__(self, task_list):
g.DVBox.__init__(self)
self.task_list = task_list
template = bind.ListTranslator(TaskView, None)
bind.bind(template.a, task_list)
bind.bind(self.children, template.b)
