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class Playlist:
def __init__(self, callback):
self._songList = list()
self._currentSong = None
self._setSongCallback = callback
def addSong(self, path):
self._songList.append(path)
def setCurrentSong(self, index):
if index >= 0 and index < len(self._songList):
self._currentSong = index
self._setSongCallback(self._songList[index])
def getCurrentSong(self):
index = self._currentSong
return self._songList[index] if index is not None else None
def getCurrentSongIndex(self):
return self._currentSong
def getSongs(self):
return self._songList
def clear(self):
self.__init__(self._setSongCallback)
def nextSong(self):
if self._currentSong is None:
nextSong = 0
else:
nextSong = self._currentSong + 1
self.setCurrentSong(nextSong)
def previousSong(self):
if self._currentSong is None:
prevSong = 0
else:
prevSong = self._currentSong - 1
self.setCurrentSong(prevSong)
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