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class Data:
"""Data is a generic storage interface for addons which need to persist data.
Addons can access Data through the Connection.data attribute. Each addon
should add its own attribute to Data to serve as a namespace. For example,
the Foo addon might store a dict as such:
Connection.data.foo = dict()
Data doesn't persist anything on its own but instead relies on a persistence
addon to handle the onDataSave and onDataLoad events.
Data fires an onDataLoaded event to inform addons that new data may be available.
"""
def __init__(self, context, **kwargs):
"""Create a Data for the given Connection context.
Optionally pass in a dict of values to load.
"""
self.__dict__ = kwargs
self.context = context
def set_data(self, values):
"""Replace all values in this Data with the given dict."""
contex = self.context
self.__dict__ = values
self.context = context
self.context.fireEvent([('onDataLoaded', dict(data=self), False)])
def merge(self, values):
"""Merge a dictionary into this Data."""
for k, v, in values.iteritems():
setattr(self, k, v)
self.context.fireEvent([('onDataLoaded', dict(data=self), False)])
def save(self):
"""Trigger the onDataSave event."""
data = self.__dict__
del data['context']
self.context.fireEvent([('onDataSave', dict(data=self, values=data), False)])
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