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- __all__ = ["LUIInitialState"]
- class LUIInitialState:
- """ Small helper class to pass keyword arguments to the LUI-objects. It takes
- all keyword arguments of a given call, and calls obj.<kwarg> = <value> for
- each keyword. It usually is called at the end of the __init__ method. """
- def __init__(self):
- raise Exception("LUIInitialState is a static class")
- # Some properties have alternative names, under which they can be accessed.
- __MAPPINGS = {
- "x": "left",
- "y": "top",
- "w": "width",
- "h": "height"
- }
- @classmethod
- def init(cls, obj, kwargs):
- """ Applies all keyword arguments as properties. For example, passing
- dict({"left": 10, "top": 3, "color": (0.2, 0.6, 1.0)}) results in
- behaviour similar to:
- element.left = 10
- element.top = 3
- element.color = 0.2, 0.6, 1.0
- Calling this method allows setting arbitrary properties in
- constructors, without having to specify each possible keyword argument.
- """
- for arg_name, arg_val in kwargs.items():
- arg_name = cls.__MAPPINGS.get(arg_name, arg_name)
- if hasattr(obj, arg_name):
- setattr(obj, arg_name, arg_val)
- else:
- raise AttributeError("{0} has no attribute {1}".format(
- obj.__class__.__name__, arg_name))
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