# Tai Sakuma <tai.sakuma@gmail.com>
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class Base(object):
"""The base class of the classes All and Any
"""
def __init__(self, name, selections):
self.name = name
self.selections = list(selections)
def __repr__(self):
return '{}(name={!r}, selections={!r})'.format(
self.__class__.__name__,
self.name,
self.selections
)
def add(self, selection):
self.selections.append(selection)
def begin(self, event):
for s in self.selections:
if hasattr(s, 'begin'): s.begin(event)
def event(self, event):
return self(event)
def end(self):
for s in self.selections:
if hasattr(s, 'end'): s.end()
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[docs]class All(Base):
"""select events that meet all conditions
"""
[docs] def __init__(self, name='All', selections=[ ]):
if name is None:
name = 'All'
super(All, self).__init__(name, selections)
def __call__(self, event):
for s in self.selections:
if not s(event):
return False
return True
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[docs]class Any(Base):
"""select events that meet any of the conditions
"""
[docs] def __init__(self, name='Any', selections=[ ]):
if name is None:
name = 'Any'
super(Any, self).__init__(name, selections)
def __call__(self, event):
for s in self.selections:
if s(event):
return True
return False
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[docs]class Not(object):
"""select events that do NOT pass the selection
"""
[docs] def __init__(self, selection, name='Not'):
if name is None:
name = 'Not'
self.name = name
self.selection = selection
def __repr__(self):
return '{}(name={!r}, selection={!r})'.format(
self.__class__.__name__,
self.name,
self.selection
)
def begin(self, event):
if hasattr(self.selection, 'begin'):
self.selection.begin(event)
def __call__(self, event):
return not self.selection(event)
def event(self, event):
return self(event)
def end(self):
if hasattr(self.selection, 'end'):
self.selection.end()
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