Simple text editor for basic notes

trovedb/qgui/note_browser.py

@@ -21,8 +21,7 @@ class NoteBrowser(QWidget):
         tree_selected(TreeNote) -- emitted when a tree note is activated
     """
 
-    note_selected = Signal(object)  # Note
-    tree_selected = Signal(object)  # TreeNote
+    activeNoteChanged = Signal(object)  # Note
 
     def __init__(self, trove: Trove, parent: Optional[QWidget] = None):
         super().__init__(parent)
@@ -38,6 +37,8 @@ class NoteBrowser(QWidget):
         layout.setContentsMargins(0, 0, 0, 0)
         layout.setSpacing(2)
 
+        self._activeNote: Optional[Note] = None
+
         self._tree = QTreeView()
         self._tree.setModel(self._model)
         self._tree.setHeaderHidden(True)
@@ -67,12 +68,7 @@ class NoteBrowser(QWidget):
 
     def _on_activated(self, index: QModelIndex) -> None:
         note = index.data(Qt.ItemDataRole.UserRole)
-        if note is None:
-            return
-        if isinstance(note, TreeNote):
-            self.tree_selected.emit(note)
-        else:
-            self.note_selected.emit(note)
+        self._handle_set_active_note(note)
 
     def _on_context_menu(self, pos) -> None:
         index = self._tree.indexAt(pos)
@@ -105,6 +101,14 @@ class NoteBrowser(QWidget):
     # Public API
     # ------------------------------------------------------------------
 
+    def _handle_set_active_note(self, note: Note | None) -> None:
+        """Called by the controller to update the active note."""
+        if not isinstance(note, Note):
+            note = None
+        if self._activeNote != note:
+            self._activeNote = note
+            self.activeNoteChanged.emit(note)
+
     def select_note(self, note: Note) -> None:
         """Programmatically select the node matching the given note object."""
         match = self._find_index(self._model.index(0, 0, QModelIndex()), note)