feat: (#494) display device signals

bec_widgets/widgets/services/device_browser/device_item/device_signal_display.py

@@ -1,12 +1,16 @@
-from qtpy.QtWidgets import QLabel, QLineEdit, QVBoxLayout, QWidget
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QLabel, QVBoxLayout, QWidget
 
 from bec_widgets.utils.bec_connector import ConnectionConfig
 from bec_widgets.utils.bec_widget import BECWidget
 from bec_widgets.utils.error_popups import SafeProperty
 from bec_widgets.widgets.containers.dock.dock import BECDock
+from bec_widgets.widgets.utility.signal_label.signal_label import SignalLabel
 
 
 class SignalDisplay(BECWidget, QWidget):
+    RPC = False
+
     def __init__(
         self,
         client=None,
@@ -17,13 +21,50 @@ class SignalDisplay(BECWidget, QWidget):
         parent_dock: BECDock | None = None,
         **kwargs,
     ):
+        """A widget to display all the signals from a given device, and allow getting
+        a fresh reading."""
         super().__init__(client, config, gui_id, theme_update, parent_dock, **kwargs)
         self.get_bec_shortcuts()
         self._layout = QVBoxLayout()
         self.setLayout(self._layout)
-        self._layout.addWidget(QLabel(f"Signals for {self.dev}:"))
+        self._content = QWidget()
+        self._layout.addWidget(self._content)
+        self._device = device
         self.device = device
 
+    def _populate(self):
+        self._content.deleteLater()
+        self._content = QWidget()
+        self._layout.addWidget(self._content)
+        self._content_layout = QVBoxLayout()
+        self._content_layout.setAlignment(Qt.AlignmentFlag.AlignTop)
+        self._content.setLayout(self._content_layout)
+
+        if self._device in self.dev:
+            for sig in self.dev[self.device]._info.get("signals", {}).keys():
+                self._content_layout.addWidget(
+                    SignalLabel(
+                        device=self._device,
+                        signal=sig,
+                        show_select_button=False,
+                        show_default_units=True,
+                    )
+                )
+            self._content_layout.addStretch(1)
+        else:
+            self._content_layout.addWidget(
+                QLabel(f"Device {self.device} not found in device manager!")
+            )
+
+    @SafeProperty(str)
+    def device(self):
+        return self._device
+
+    @device.setter
+    def device(self, value: str):
+        self._device = value
+        self._populate()
+
 
 if __name__ == "__main__":  # pragma: no cover
     import sys

bec_widgets/widgets/utility/signal_label/signal_label.py

@@ -16,7 +16,6 @@ from qtpy.QtWidgets import (
     QGroupBox,
     QHBoxLayout,
     QLabel,
-    QLineEdit,
     QToolButton,
     QVBoxLayout,
     QWidget,