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@@ -99,10 +99,8 b' class _Selection(DOMWidget):' | |||
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99 | 99 | self.value = next(iter(self.values_values)) |
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100 | 100 | |
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101 | 101 | def _values_readonly_changed(self, name, old, new): |
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102 |
if not self.values_lock. |
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102 | if not self.values_lock.locked(): | |
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103 | 103 | raise TraitError("`.%s` is a read-only trait. Use the `.values` tuple instead." % name) |
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104 | else: | |
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105 | self.values_lock.release() | |
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106 | 104 | |
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107 | 105 | def _value_changed(self, name, old, new): |
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108 | 106 | """Called when value has been changed""" |
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