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69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
# -------------------------------------------------------------------------
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# Author: Roberto Cavada <cavada@irst.itc.it>
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#
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# Copyright (C) 2006 by Roberto Cavada
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#
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# pygtkmvc is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# pygtkmvc is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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#
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# For more information on pygtkmvc see <http://pygtkmvc.sourceforge.net>
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# or email to the author <cavada@irst.itc.it>.
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# -------------------------------------------------------------------------
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from support import decorators
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from support.wrappers import ObsWrapperBase
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# ----------------------------------------------------------------------
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class Observable (ObsWrapperBase):
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def __init__(self):
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ObsWrapperBase.__init__(self)
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return
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pass # end of class
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@decorators.good_decorator
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def observed(func):
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"""Use this decorator to make your class methods observable.
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Your observer will receive at most two notifications:
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- property_<name>_before_change
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- property_<name>_after_change
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"""
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def wrapper(*args, **kwargs):
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self = args[0]
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assert(isinstance(self, Observable))
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self._notify_method_before(self, func.__name__, args, kwargs)
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res = func(*args, **kwargs)
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self._notify_method_after(self, func.__name__, res, args, kwargs)
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return res
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return wrapper
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# ----------------------------------------------------------------------
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class Signal (Observable):
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"""Base class for signals properties"""
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def __init__(self):
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Observable.__init__(self)
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return
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def emit(self, *args, **kwargs):
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return self.__get_model__().notify_signal_emit(
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self.__get_prop_name__(), args, kwargs)
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pass # end of class
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