Exemplo n.º 1
0
    def __init__(self, capacity, name=None, parent=None):
        super(Carrousel, self).__init__(name=name, parent=parent)
        # Container is empty
        self._container = [None] * capacity
        self._capacity = capacity
        self._pos = 0
        # object in the current position
        self._current = self._container[self._pos]

        # signals
        self.changed = Signal()
        self.moved = Signal()
Exemplo n.º 2
0
class Carrousel(ContainerDevice):
    def __init__(self, capacity, name=None, parent=None):
        super(Carrousel, self).__init__(name=name, parent=parent)
        # Container is empty
        self._container = [None] * capacity
        self._capacity = capacity
        self._pos = 0
        # object in the current position
        self._current = self._container[self._pos]

        # signals
        self.changed = Signal()
        self.moved = Signal()

    def current(self):
        return self._current

    def pos(self):
        return self._pos

    def put_in_pos(self, obj, pos):
        if pos >= self._capacity or pos < 0:
            raise ValueError('position greater than capacity or negative')

        self._container[pos] = obj
        self._current = self._container[self._pos]

    def move_to(self, pos):
        if pos >= self._capacity or pos < 0:
            raise ValueError('Position %d out of bounds' % pos)

        if pos != self._pos:
            self._pos = pos
            self._current = self._container[self._pos]
            self.changed.emit(self._pos)
        self.moved.emit(self._pos)

    def select(self, name):
        # find pos of object with name
        for idx, item in enumerate(self._container):
            if item:
                if isinstance(item, basestring):
                    if item == name:
                        return self.move_to(idx)
                elif item.name == name:
                    return self.move_to(idx)
                else:
                    pass
        else:
            raise ValueError('No object named %s' % name)

    def config_info(self):
        if self._current:
            if isinstance(self._current, basestring):
                label = self._current
            else:
                label = self._current.name
        else:
            label = 'Unknown'
        return {'name': self.name, 'position': self._pos,
                'label': label}

    def configure(self, meta):
        self.move_to(meta)