Only show either one or another, pid or not

pytec/tec_qt.py

@@ -1,6 +1,7 @@
 from PyQt6 import QtWidgets, QtGui, QtCore
 from PyQt6.QtCore import pyqtSignal, QObject, QSignalBlocker, pyqtSlot
-from pyqtgraph.parametertree import Parameter, ParameterTree, ParameterItem
+import pyqtgraph.parametertree.parameterTypes as pTypes
+from pyqtgraph.parametertree import Parameter, ParameterTree, ParameterItem, registerParameterType
 import pyqtgraph as pg
 from pglive.sources.data_connector import DataConnector
 from pglive.kwargs import Axis
@@ -32,6 +33,37 @@ def get_argparser():
     return parser
 
 
+class MutexParameter(pTypes.ListParameter):
+    """
+    Mutually exclusive parameter where only one of its children is visible at a time, list selectable.
+
+    The ordering of the list items determines which children will be visible.
+    """
+    def __init__(self, **opts):
+        super().__init__(**opts)
+
+        self.sigValueChanged.connect(self._show_chosen_child)
+        self.sigValueChanged.emit(self, self.opts['value'])
+
+    def _get_param_from_value(self, value):
+        if isinstance(self.opts['limits'], dict):
+            values_list = list(self.opts['limits'].values())
+        else:
+            values_list = self.opts['limits']
+
+        return self.children()[values_list.index(value)]
+
+    @pyqtSlot(object, object)
+    def _show_chosen_child(self, value):
+        for param in self.children():
+            param.hide()
+
+        self._get_param_from_value(value.value()).show()
+
+
+registerParameterType('mutex', MutexParameter)
+
+
 class WrappedClient(QObject, Client):
     connection_error = pyqtSignal()
 
@@ -128,7 +160,7 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
         {'name': 'Temperature', 'type': 'float', 'siPrefix': True, 'suffix': '°C', 'readonly': True},
         {'name': 'Current through TEC', 'type': 'float', 'siPrefix': True, 'suffix': 'A', 'readonly': True},
         {'name': 'Output Config', 'expanded': True, 'type': 'group', 'children': [
-            {'name': 'Control Method', 'type': 'list', 'limits': {'Current Setpoint': False, 'Temperature PID': True},
+            {'name': 'Control Method', 'type': 'mutex', 'limits': {'Current Setpoint': False, 'Temperature PID': True},
             'commands': [f'pwm {ch} pid'], 'children': [
                 {'name': 'Constant Current', 'type': 'float', 'value': 0, 'step': 0.1, 'limits': (-3, 3), 'siPrefix': True,
                 'suffix': 'A', 'param': [('pwm', ch, 'i_set')]},
@@ -586,22 +618,23 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
     @asyncSlot(object, object)
     async def send_command(self, param, changes):
         for inner_param, change, data in changes:
-            if inner_param.opts.get("commands", None) is not None:
-                ch = param.value()
-                match inner_param.name():
-                    case 'Control Method':
-                        pid_enabled = data
-                        getattr(self, f'ch{ch}_t_line').setVisible(pid_enabled)
-                        if pid_enabled:
-                            getattr(self, f'ch{ch}_t_line').setValue(inner_param.child('Set Temperature').value())
-                        else:
-                            await self.client.set_param('pwm', ch, 'i_set', inner_param.child('Constant Current').value())
-                            return
-                    case 'Set Temperature':
-                        getattr(self, f'ch{ch}_t_line').setValue(data)
-                await asyncio.gather(*[self.client._command(x.format(value=data)) for x in inner_param.opts["commands"]])
-            elif inner_param.opts.get("param", None) is not None:
-                await asyncio.gather(*[self.client.set_param(*x, data) for x in inner_param.opts["param"]])
+            if change == 'value':
+                if inner_param.opts.get("commands", None) is not None:
+                    ch = param.value()
+                    match inner_param.name():
+                        case 'Control Method':
+                            pid_enabled = data
+                            getattr(self, f'ch{ch}_t_line').setVisible(pid_enabled)
+                            if pid_enabled:
+                                getattr(self, f'ch{ch}_t_line').setValue(inner_param.child('Set Temperature').value())
+                            else:
+                                await self.client.set_param('pwm', ch, 'i_set', inner_param.child('Constant Current').value())
+                                return
+                        case 'Set Temperature':
+                            getattr(self, f'ch{ch}_t_line').setValue(data)
+                    await asyncio.gather(*[self.client._command(x.format(value=data)) for x in inner_param.opts["commands"]])
+                elif inner_param.opts.get("param", None) is not None:
+                    await asyncio.gather(*[self.client.set_param(*x, data) for x in inner_param.opts["param"]])
 
 
     def _set_param_tree(self):