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import json
import logging
import os
import time
from qtpy.QtCore import Slot, Signal
from ..core import Evented
class Control(Evented):
# controlId is a static variable shared between all controls
# It is used to give unique names to controls
controlId = 0
# addedToMap and removedFromMap are signals for controls to
# know when they're added and removed from maps
addedToMap = Signal()
removedFromMap = Signal()
@property
def map(self):
return self._map
@map.setter
def map(self, map_):
self._map = map_
if map_ is None:
self.removedFromMap.emit()
else:
self.addedToMap.emit()
@property
def jsName(self):
return self._controlName
@property
def controlName(self):
return self._controlName
@controlName.setter
def controlName(self, name):
self._controlName = name
def __init__(self):
super().__init__()
self._map = None
self._controlName = self._getNewControlName()
def addTo(self, map_):
map_.addControl(self)
return self
def removeFrom(self, map_):
map_.removeControl(self)
def _getNewControlName(self):
controlName = 'c{}'.format(self.controlId)
Control.controlId += 1
return controlName
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