def redo(self, channel, image):
        """
        Called from the reference viewer shell when a new image has
        been added to a channel.
        """
        chname = channel.name

        # Only update our GUI if the activity is in the focused
        # channel
        if self.active == chname:
            imname = image.get('name', 'NONAME')
            self.set_info("A new image '%s' has been added to channel %s" % (
                imname, chname))
        return True
Called from the reference viewer shell when a new image has
        been added to a channel.