Track completed Single acquisitions and persist recent addresses

python/set_devices/qt_ports/address_history.py

@@ -0,0 +1,56 @@
+"""Editable recent-address selector with portable, per-interface JSON storage."""
+import json
+from pathlib import Path
+try:
+    from PySide6.QtCore import QSignalBlocker
+    from PySide6.QtWidgets import QComboBox, QSizePolicy
+except ImportError:
+    from PySide2.QtCore import QSignalBlocker
+    from PySide2.QtWidgets import QComboBox, QSizePolicy
+
+class AddressHistoryBox(QComboBox):
+    def __init__(self, filename, parent=None):
+        super().__init__(parent)
+        self.filename = Path(filename)
+        self.interface = 'Ethernet'
+        self.history = {}
+        self.setEditable(True)
+        self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed)
+        self.setInsertPolicy(QComboBox.InsertPolicy.NoInsert)
+        try:
+            saved = json.loads(self.filename.read_text(encoding='utf8'))
+            if isinstance(saved, dict):
+                self.history = {key: [x for x in items if isinstance(x, str) and x.strip()][:20]
+                                for key, items in saved.items() if isinstance(items, list)}
+        except (OSError, ValueError):
+            pass
+        self.set_interface(self.interface)
+
+    def text(self):
+        return self.currentText()
+
+    def setText(self, text):
+        self.setEditText(text)
+
+    def setPlaceholderText(self, text):
+        self.lineEdit().setPlaceholderText(text)
+
+    def set_interface(self, interface):
+        self.interface = interface
+        with QSignalBlocker(self):
+            self.clear()
+            self.addItems(self.history.get(interface, []))
+            if not self.count():
+                self.setEditText('')
+
+    def remember(self):
+        address = self.currentText().strip()
+        if not address:
+            return
+        previous = self.history.get(self.interface, [])
+        self.history[self.interface] = [address] + [x for x in previous if x.casefold()!=address.casefold()][:19]
+        self.filename.parent.mkdir(parents=True, exist_ok=True)
+        temporary = self.filename.with_suffix('.tmp')
+        temporary.write_text(json.dumps(self.history, ensure_ascii=False, indent=2), encoding='utf8')
+        temporary.replace(self.filename)
+        self.set_interface(self.interface)