def onSelectionChanged(self, models):
if self._oldModels in [None, []]:
for model in models:
attr = Attribute(model)
#force a read -> attr.read()
attr.addListener(self)
self._oldModels = models
else:
keptModels = []
newModels = []
for model in models:
if model in self._oldModels:
keptModels.append(model)
else:
newModels.append(model)
for model in self._oldModels:
if model not in newModels:
attr = Attribute(model)
attr.removeListener(self)
legend = attr.getNormalName()
print("Trying to remove ", legend)
self.removeCurve(legend, replot=False)
for model in newModels:
attr = Attribute(model)
# attr.read()
attr.addListener(self)
self._oldModels = keptModels + newModels
class TaurusWebAttribute(object):
def __init__(self, name, keeper):
self.name = name
self.keepers = [keeper]
self._last_time = 0
self.last_value_event = None
self.last_config_event = None
self.attribute = Attribute(self.name)
self.attribute.addListener(self)
def eventReceived(self, evt_src, evt_type, evt_value):
# print(evt_value)
if evt_type == TaurusEventType.Error:
action = "ERROR"
value = error_str(evt_value)
else:
if evt_type == TaurusEventType.Config:
action = "CONFIG"
value = format_config_event(evt_src)
self.last_config_event = value
else:
self._last_time = evt_value.time.tv_sec
action = "CHANGE"
value = format_value_event(evt_value)
self.last_value_event = value
# self.callback(self.name, {"type": action, "data": {self.name: value}})
# event = {"type": action, "data": value}
try:
for keeper in self.keepers:
keeper.put(self.name, action, value)
except QueueFull:
print("Queue full!")
# print(event)
def addKeeper(self, keeper):
self.keepers.append(keeper)
def removeKeeper(self, keeper):
self.keepers.remove(keeper)
def clear(self):
self.attribute.removeListener(self)
def onSelectionChanged(self, models):
if self._oldModels in [None, []]:
self._attrDict = {}
for model in models:
try:
attr = Attribute(model)
except:
# old PyTango versions do not handle unicode
attr = Attribute(str(model))
#force a read -> attr.read()
attr.addListener(self)
legend = qt.safe_str(attr.getNormalName())
self._attrDict[legend] = attr
self._oldModels = models
else:
keptModels = []
newModels = []
for model in models:
if model in self._oldModels:
keptModels.append(model)
else:
newModels.append(model)
for model in self._oldModels:
if model not in keptModels:
attr = Attribute(model)
attr.removeListener(self)
legend = qt.safe_str(attr.getNormalName())
if legend in self._attrDict:
del self._attrDict[legend]
print("Trying to remove ", legend)
self.removeCurve(legend, replot=False)
for model in newModels:
attr = Attribute(model)
# attr.read()
attr.addListener(self)
legend = qt.safe_str(attr.getNormalName())
self._attrDict[legend] = attr
self._oldModels = keptModels + newModels
def onSelectionChanged(self, models):
if self._oldModels in [None, []]:
self._attrDict = {}
for model in models:
try:
attr = Attribute(model)
except:
# old PyTango versions do not handle unicode
attr = Attribute(str(model))
#force a read -> attr.read()
attr.addListener(self)
legend = qt.safe_str(attr.getNormalName())
self._attrDict[legend] = attr
self._oldModels = models
else:
keptModels = []
newModels = []
for model in models:
if model in self._oldModels:
keptModels.append(model)
else:
newModels.append(model)
for model in self._oldModels:
if model not in keptModels:
attr = Attribute(model)
attr.removeListener(self)
legend = qt.safe_str(attr.getNormalName())
if legend in self._attrDict:
del self._attrDict[legend]
print("Trying to remove ", legend)
self.removeCurve(legend, replot=False)
for model in newModels:
attr = Attribute(model)
# attr.read()
attr.addListener(self)
legend = qt.safe_str(attr.getNormalName())
self._attrDict[legend] = attr
self._oldModels = keptModels + newModels
class StatusArea(TaurusWidget):
"""A (scrolling) text area that displays device status, or any other
string attribute."""
statusTrigger = QtCore.pyqtSignal(str)
def __init__(self, parent=None, down_command=None, up_command=None, state=None):
TaurusWidget.__init__(self, parent)
self._setup_ui()
def _setup_ui(self):
hbox = QtGui.QVBoxLayout(self)
self.setLayout(hbox)
self.status_label = QtGui.QLabel("(No status has been read.)")
self.status_label.setTextInteractionFlags(QtCore.Qt.TextSelectableByMouse)
self.status_label.setWordWrap(True)
self.status_label.setAlignment(QtCore.Qt.AlignTop)
status_scroll_area = QtGui.QScrollArea()
status_scroll_area.setMaximumSize(QtCore.QSize(100000, 100))
status_scroll_area.setWidgetResizable(True)
status_scroll_area.setWidget(self.status_label)
hbox.addWidget(status_scroll_area)
self.status = None
self.statusTrigger.connect(self.updateStatus)
def setModel(self, model):
if model:
split_model = model.split("/")
if len(split_model) < 4:
self.status = Attribute("%s/Status" % model)
else:
self.status = Attribute(model)
self.status.addListener(self.onStatusChange)
else:
self.status and self.status.removeListener(self.onStatusChange)
def onStatusChange(self, evt_src, evt_type, evt_value):
if evt_type in [PyTango.EventType.CHANGE_EVENT,
PyTango.EventType.PERIODIC_EVENT]:
self.statusTrigger.emit(evt_value.value)
def updateStatus(self, status):
self.status_label.setText(status)
class TaurusAttribute(object):
"""This object is a listener for the taurus attribute value.
When a attribute changes it sends an event. The event
triggers a call to *eventReceived*. *eventReceived* will transform
the change event into a JSON encoded string and sends this
string through the web socket to the client"""
def __init__(self, name, callback):
print self.__class__.__name__, name
self.name = name
self.callback = callback
self._last_time = 0
self.last_value_event = None
self.last_config_event = None
self.attribute = Attribute(self.name)
self.attribute.addListener(self)
def eventReceived(self, evt_src, evt_type, evt_value):
"""Transforms the event into a JSON encoded string and sends this
string into the web socket"""
modelObj = evt_src
data = {}
if evt_type == TaurusEventType.Error:
data["event_type"] = "error"
data["error"] = error_str(evt_value)
else:
if evt_type == TaurusEventType.Config:
modelObj = evt_src.getParentObj()
data['event_type'] = "config"
data['description'] = evt_src.description
data['label'] = evt_src.label
data[
"unit"] = evt_src.unit if evt_src.unit != "No unit" else ""
data["format"] = evt_src.format
self.last_config_event = data
else:
self._last_time = evt_value.time.tv_sec
data["event_type"] = "value"
value = evt_value.value
quality = evt_value.quality
fmt = evt_value.data_format
if fmt == DataFormat._0D:
html = modelObj.displayValue(value)
if isinstance(value, PyTango._PyTango.DevState):
value = value.name
if isinstance(value, str):
html = value.replace("\n", "<br>")
elif fmt in (DataFormat._1D, DataFormat._2D):
# bad, very bad performance! Don't worry for now
value = value.tolist()
html = "[...]"
data['value'] = value
data['html'] = html
data['quality'] = str(quality)
data['time'] = evt_value.time.tv_sec
data['type'] = str(evt_value.type) # can this change..?
self.last_value_event = data
data['model'] = modelObj.getNormalName()
self.write_message(data)
def write_message(self, message):
self.callback(message)
def clear(self):
try:
print "clear", self.attribute
self.attribute.removeListener(self)
del self.attribute
except PyTango.DevFailed as e:
print >> sys.stderr, "Could not unsubscribe %s: %r" % (self.name,
e)
class TaurusAttribute(object):
"""This object is a listener for the taurus attribute value.
When a attribute changes it sends an event. The event
triggers a call to *eventReceived*. *eventReceived* will transform
the change event into a JSON encoded string and sends this
string through the web socket to the client"""
def __init__(self, name, callback):
print self.__class__.__name__, name
self.name = name
self.callback = callback
self._last_time = 0
self.last_value_event = None
self.last_config_event = None
self.attribute = Attribute(self.name)
self.attribute.addListener(self)
def eventReceived(self, evt_src, evt_type, evt_value):
"""Transforms the event into a JSON encoded string and sends this
string into the web socket"""
modelObj = evt_src
data = {}
if evt_type == TaurusEventType.Error:
data["event_type"] = "error"
data["error"] = error_str(evt_value)
else:
if evt_type == TaurusEventType.Config:
modelObj = evt_src.getParentObj()
data['event_type'] = "config"
data['description'] = evt_src.description
data['label'] = evt_src.label
data["unit"] = evt_src.unit if evt_src.unit != "No unit" else ""
data["format"] = evt_src.format
self.last_config_event = data
else:
self._last_time = evt_value.time.tv_sec
data["event_type"] = "value"
value = evt_value.value
quality = evt_value.quality
fmt = evt_value.data_format
if fmt == DataFormat._0D:
html = modelObj.displayValue(value)
if isinstance(value, PyTango._PyTango.DevState):
value = value.name
if isinstance(value, str):
html = value.replace("\n", "<br>")
elif fmt in (DataFormat._1D, DataFormat._2D):
# bad, very bad performance! Don't worry for now
value = value.tolist()
html = "[...]"
data['value'] = value
data['html'] = html
data['quality'] = str(quality)
data['time'] = evt_value.time.tv_sec
data['type'] = str(evt_value.type) # can this change..?
self.last_value_event = data
data['model'] = modelObj.getNormalName()
self.write_message(data)
def write_message(self, message):
self.callback(message)
def clear(self):
try:
print "clear", self.attribute
self.attribute.removeListener(self)
del self.attribute
except PyTango.DevFailed as e:
print >>sys.stderr, "Could not unsubscribe %s: %r" % (self.name, e)
