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57 lines
1.4 KiB
Python
57 lines
1.4 KiB
Python
class DataBinding:
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_inner_ = []
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def __init__(self, data):
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_bindings_ = {}
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self._inner_.append(_bindings_)
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self._inner_.append(data)
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# self._inner_[0] = _bindings
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# self._inner_[1] = data
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def __getattr__(self, name):
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data = self._inner_[1]
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return data[name]
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def __setattr__(self, name, value):
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_bindings_ = self._inner_[0]
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if name in _bindings_:
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bindings = _bindings_[name]
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for binding in bindings:
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element = binding['element']
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attr = binding['attr']
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_name = attr.replace("-", "_")
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funcName = "set_%s" % _name
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if hasattr(element, funcName):
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element.func = getattr(element, funcName)
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element.func(value)
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else:
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if hasattr(element, "obj") and element.obj:
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setattr(element.obj, _name, value)
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def set_binding_value(self, element, attr, key):
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_bindings_ = self._inner_[0]
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if key not in _bindings_:
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_bindings_[key] = []
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_bindings_[key].append({
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"element": element,
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"attr": attr
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})
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_data = {
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'a': 10,
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'b': 100
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}
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data = DataBinding(_data)
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class Binding:
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def set_value(self, value):
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print('set value =', value)
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binding = Binding()
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data.set_binding_value(binding, 'value', 'a')
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data.a = 20
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