def observeValueForKeyPath_ofObject_change_context_(self, key_path, object, change, context):
NSLog("KEY_PATH: %@", key_path)
if key_path == "spotify.login_state":
if self.spotify.login_state == "login_failed":
self.display_login_window()
NSApp.presentError_modalForWindow_delegate_didPresentSelector_contextInfo_(
self.spotify.login_error, self.login_window, None, None, None)
elif key_path == "spotify.current_track":
self.search_window.setTitle_(self.spotify.current_track.name())
