##// END OF EJS Templates
s/CTuple/Tuple
Jonathan Frederic -
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@@ -1,51 +1,51 b''
1 1 """ContainerWidget class.
2 2
3 3 Represents a container that can be used to group other widgets.
4 4 """
5 5 #-----------------------------------------------------------------------------
6 6 # Copyright (c) 2013, the IPython Development Team.
7 7 #
8 8 # Distributed under the terms of the Modified BSD License.
9 9 #
10 10 # The full license is in the file COPYING.txt, distributed with this software.
11 11 #-----------------------------------------------------------------------------
12 12
13 13 #-----------------------------------------------------------------------------
14 14 # Imports
15 15 #-----------------------------------------------------------------------------
16 16 from .widget import DOMWidget
17 from IPython.utils.traitlets import Unicode, CTuple, Instance
17 from IPython.utils.traitlets import Unicode, Tuple, Instance
18 18
19 19 #-----------------------------------------------------------------------------
20 20 # Classes
21 21 #-----------------------------------------------------------------------------
22 22 class ContainerWidget(DOMWidget):
23 23 _view_name = Unicode('ContainerView', sync=True)
24 24
25 25 # Keys, all private and managed by helper methods. Flexible box model
26 26 # classes...
27 children = CTuple(Instance(DOMWidget))
28 _children = CTuple(Instance(DOMWidget), sync=True)
27 children = Tuple(Instance(DOMWidget))
28 _children = Tuple(Instance(DOMWidget), sync=True)
29 29
30 30 def _children_changed(self, name, old, new):
31 31 """Validate children list.
32 32
33 33 Makes sure only one instance of any given model can exist in the
34 34 children list.
35 35 An excellent post on uniqifiers is available at
36 36 http://www.peterbe.com/plog/uniqifiers-benchmark
37 37 which provides the inspiration for using this implementation. Below
38 38 I've implemented the `f5` algorithm using Python comprehensions."""
39 39 if new is not None and isinstance(new, list):
40 40 seen = {}
41 41 def add_item(i):
42 42 seen[i.model_id] = True
43 43 return i
44 44 self._children = [add_item(i) for i in new if not i.model_id in seen]
45 45
46 46
47 47 class PopupWidget(ContainerWidget):
48 48 _view_name = Unicode('PopupView', sync=True)
49 49
50 50 description = Unicode(sync=True)
51 51 button_text = Unicode(sync=True)
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