#!/usr/bin/env python
# encoding: utf-8
"""
interface.py

Created by Cody Brocious on 2006-11-11.
Copyright (c) 2006 MP3tunes, LLC. All rights reserved.
"""

class interface(object):
    __public__ = {}
    
    def __new__(cls, *args, **kwargs):
        obj = object.__new__(cls, *args, **kwargs)
        
        obj.collectInterfaces()
        
        return obj
    
    @classmethod
    def addInterface(cls, func, interface):
        try:
            __interface__ = func.__interface__
        except:
            __interface__ = func.__interface__ = []
        
        __interface__.append(interface)
    
    @classmethod
    def public(cls, func):
        interface.addInterface(func, interface.public)
        return func
    
    @classmethod
    def protected(cls, func):
        interface.addInterface(func, interface.protected)
        return func
    
    @classmethod
    def secure(cls, func):
        interface.addInterface(func, interface.secure)
        return func
    
    def collectInterfaces(self):
        for name in dir(self):
            obj = object.__getattribute__(self, name)
            try:
                if interface.public in obj.__interface__:
                    self.__public__[name] = obj
            except (KeyError, AttributeError):
                pass
    
    def __getitem__(self, name):
        return self.__public__[name]
    
    def __getattribute__(self, name):
        __public__ = object.__getattribute__(self, '__public__')
        
        if name in __public__:
            return __public__[name]
        
        try:
            if object.__getattribute__(interface, name) or name == '__public__':
                return object.__getattribute__(self, name)
        except:
            raise AttributeError, '%s object has no attribute %s' % (str(self.__class__.__name__), repr(name))
        
        return None