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import twisted.spread.pb
import McFoo.observe
class HistoryObserver(McFoo.observe.Observer):
def remote_snapshot(self, history):
pass
def remote_add(self, entry):
pass
class PlayqueueObserver(McFoo.observe.Observer):
def remote_snapshot(self, queue):
pass
def remote_insert(self, idx, song):
pass
def remote_remove(self, idx):
pass
def remote_move(self, oldidx, newidx):
pass
class Queueable:
def playable(self):
raise NotImplementedError
class Playable(Queueable):
id=None
def playable(self):
return 1
class NonPlayable(Queueable):
def playable(self):
return 0
class McFooPriorityMarker(NonPlayable):
def __init__(self, pri):
self.priority=pri
def __repr__(self):
return '<priority %d>' % self.priority
def as_data(self):
return {'priority': self.priority}
import UserList
class PlayHistory(UserList.UserList):
def __init__(self, initlist=[]):
UserList.UserList.__init__(self, initlist)
self.maxlen=10
self.observers=McFoo.observe.Observers()
def __getinitargs__(self):
return [self.data]
def add(self, song):
if song!=None:
self[0:0]=[song]
self[self.maxlen:]=[]
self.observers('add', song.as_data())
def as_data(self):
s=map(lambda s: s.as_data(), self.data)
s.reverse()
return s
def observe(self, callback):
self.observers.append_and_call(callback, 'snapshot', self.as_data())
def unobserve(self, callback):
self.observers.remove(callback)
class PlayQueue(UserList.UserList):
def __init__(self, filler, initlist=[]):
UserList.UserList.__init__(self, initlist)
self.history=PlayHistory()
self.observers=McFoo.observe.Observers()
self.filler=filler
def __getinitargs__(self):
return [self.filler, self.data]
def observe(self, callback):
self.observers.append_and_call(callback, 'snapshot', self.as_data())
def unobserve(self, callback):
self.observers.remove(callback)
def insert_point(self, pri):
smallest=0
for i in range(len(self.data)):
if isinstance(self[i], McFooPriorityMarker):
if pri == self[i].priority:
return i
elif pri < self[i].priority:
break
else:
smallest=i
self.insert(smallest, McFooPriorityMarker(pri))
return smallest
def add(self, song):
self.insert(self.insert_point(song.priority), song)
def _insert(self, idx, song):
self.data.insert(idx, song)
def insert(self, idx, song):
self._insert(idx, song)
self.observers('insert', idx, song.as_data())
def remove(self, song):
i=0
while song!=self[i]:
i=i+1
self[i:i+1]=[]
self.observers('remove', i)
self.ensure_fill()
def id2idx(self, id):
i=0
while not self[i].playable() or id!=self[i].id:
i=i+1
return i
def remove_by_id(self, id):
try:
i=self.id2idx(id)
except IndexError:
pass
else:
self[i:i+1]=[]
self.observers('remove', i)
self.ensure_fill()
def pop(self):
self.ensure_fill()
i=0
try:
while not self[i].playable():
i=i+1
song=self[i]
del self[i]
except IndexError:
song=None
if song:
self.observers('remove', i)
self.history.add(song)
return song
def ensure_fill(self):
while len(self) < 100:
filename=self.filler()
song=McFoo.song.Song(filename)
self.add(song)
def __str__(self):
s=''
for so in self.data:
s=s+str(so)
return s
def as_data(self):
s=[]
for song in self:
s.append(song.as_data())
return s
def move(self, id, offset):
try:
i=self.id2idx(id)
except IndexError:
pass
else:
t=self[i]
self[i:i+1]=[]
self._insert(i+offset, t)
self.observers('move', i, i+offset)
def moveabs(self, id, newloc):
try:
i=self.id2idx(id)
except IndexError:
pass
else:
t=self[i]
self[i:i+1]=[]
self._insert(newloc, t)
self.observers('move', i, newloc)
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