fix(signal-combobox): bug fix in signal combobox that crashed upon switching from device to signal input

bec_widgets/tests/utils.py

@@ -200,7 +200,13 @@ class DMMock:
         self.devices = DeviceContainer()
         self.enabled_devices = [device for device in self.devices if device.enabled]
 
-    def add_devives(self, devices: list):
+    def add_devices(self, devices: list):
+        """
+        Add devices to the DeviceContainer.
+
+        Args:
+            devices (list): List of device instances to add.
+        """
         for device in devices:
             self.devices[device.name] = device
 

bec_widgets/widgets/control/device_input/base_classes/device_signal_input_base.py

@@ -112,9 +112,12 @@ class DeviceSignalInputBase(BECWidget):
         # See above convention for Signals and ComputedSignals
         if isinstance(device, Signal):
             self._signals = [self._device]
-            FilterIO.set_selection(widget=self, selection=[self._device])
+            self._hinted_signals = [self._device]
+            self._normal_signals = []
+            self._config_signals = []
+            FilterIO.set_selection(widget=self, selection=self._signals)
             return
-        device_info = device._info["signals"]
+        device_info = device._info.get("signals", {})
 
         def _update(kind: Kind):
             return [

bec_widgets/widgets/control/device_input/device_combobox/device_combobox.py

@@ -22,6 +22,8 @@ class DeviceComboBox(DeviceInputBase, QComboBox):
         config: Device input configuration.
         gui_id: GUI ID.
         device_filter: Device filter, name of the device class from BECDeviceFilter and BECReadoutPriority. Check DeviceInputBase for more details.
+        readout_priority_filter: Readout priority filter, name of the readout priority class from BECDeviceFilter and BECReadoutPriority. Check DeviceInputBase for more details.
+        available_devices: List of available devices, if passed, it sets apply filters to false and device/readout priority filters will not be applied.
         default: Default device name.
         arg_name: Argument name, can be used for the other widgets which has to call some other function in bec using correct argument names.
     """

bec_widgets/widgets/control/device_input/device_line_edit/device_line_edit.py

@@ -24,7 +24,9 @@ class DeviceLineEdit(DeviceInputBase, QLineEdit):
         client: BEC client object.
         config: Device input configuration.
         gui_id: GUI ID.
-        device_filter: Device filter, name of the device class from BECDeviceFilter and ReadoutPriority. Check DeviceInputBase for more details.
+        device_filter: Device filter, name of the device class from BECDeviceFilter and BECReadoutPriority. Check DeviceInputBase for more details.
+        readout_priority_filter: Readout priority filter, name of the readout priority class from BECDeviceFilter and BECReadoutPriority. Check DeviceInputBase for more details.
+        available_devices: List of available devices, if passed, it sets apply filters to false and device/readout priority filters will not be applied.
         default: Default device name.
         arg_name: Argument name, can be used for the other widgets which has to call some other function in bec using correct argument names.
     """