Source code for aaa_modules.layout_model.motion_sensor

import time
from org.eclipse.smarthome.core.library.types import OnOffType

from aaa_modules.layout_model.device import Device

class MotionSensor(Device):
    '''
    Represents a motion sensor; the underlying OpenHab object is a SwitchItem.
    '''

    def __init__(self, switchItem):
        '''
        :param org.eclipse.smarthome.core.library.items.SwitchItem switchItem:
        :raise ValueError: if any parameter is invalid
        '''
        Device.__init__(self, switchItem)
        self.lastOnTimestamp = -1

    def isOn(self):
        '''
        Returns true if the motion sensor's state is on; false otherwise.
        '''
        return OnOffType.ON == self.getItem().getState()

    def isOccupied(self, minutesFromLastMotionEvent = 5):
        '''
        Returns true if a motion event was triggered within the provided # of
        minutes. Returns false otherwise.

        :rtype: bool
        '''
        if self.isOn():
            return True

        elapsedTime = time.time() - self.lastOnTimestamp
        return elapsedTime < (minutesFromLastMotionEvent * 60)

    def onMotionSensorTurnedOn(self, events, itemName):
        '''
        Handled the motion sensor ON event.

        :rtype: True if itemName matches this sensor; False otherwise.
        '''
        matched = self.getItemName() == itemName 

        self.lastOnTimestamp = time.time()

        return matched

    def __unicode__(self):
        '''
        @override
        '''
        return u"{}, lastOnTimestamp: {}".format(
                super(MotionSensor, self).__unicode__(), self.lastOnTimestamp)