move update_search into sidebar.py; fix setFilter()

No idea why neither mypy nor pylint are not noticing
"set_filter_then_search" does not exist. Python tooling. :-(

qt/aqt/browser.py

@@ -674,6 +674,9 @@ class Browser(QMainWindow):
         self.form.searchEdit.lineEdit().setText(prompt)
         self.search()
 
+    def current_search(self) -> str:
+        return self.form.searchEdit.lineEdit().text()
+
     def search(self) -> None:
         """Search triggered programmatically. Caller must have saved note first."""
 
@@ -979,32 +982,10 @@ QTableView {{ gridline-color: {grid} }}
         if want_visible:
             self.sidebar.refresh()
 
-    # Sidebar helpers
-    ######################################################################
-
-    def update_search(self, *terms: Union[str, SearchTerm]) -> None:
-        """Modify the current search string based on modified keys, then refresh."""
-        try:
-            search = self.col.build_search_string(*terms)
-            mods = self.mw.app.keyboardModifiers()
-            if mods & Qt.AltModifier:
-                search = self.col.build_search_string(search, negate=True)
-            cur = str(self.form.searchEdit.lineEdit().text())
-            if mods & Qt.ControlModifier and mods & Qt.ShiftModifier:
-                search = self.col.replace_search_term(cur, search)
-            elif mods & Qt.ControlModifier:
-                search = self.col.build_search_string(cur, search)
-            elif mods & Qt.ShiftModifier:
-                search = self.col.build_search_string(cur, search, match_any=True)
-        except InvalidInput as e:
-            show_invalid_search_error(e)
-        else:
-            self.form.searchEdit.lineEdit().setText(search)
-            self.onSearchActivated()
-
     # legacy
+
     def setFilter(self, *terms: str) -> None:
-        self.set_filter_then_search(*terms)
+        self.sidebar.update_search(*terms)
 
     # Info
     ######################################################################

qt/aqt/sidebar.py

@@ -364,6 +364,25 @@ class SidebarTreeView(QTreeView):
                 if item.is_expanded(searching):
                     self.setExpanded(idx, True)
 
+    def update_search(self, *terms: Union[str, SearchTerm]) -> None:
+        """Modify the current search string based on modified keys, then refresh."""
+        try:
+            search = self.col.build_search_string(*terms)
+            mods = self.mw.app.keyboardModifiers()
+            if mods & Qt.AltModifier:
+                search = self.col.build_search_string(search, negate=True)
+            current = self.browser.current_search()
+            if mods & Qt.ControlModifier and mods & Qt.ShiftModifier:
+                search = self.col.replace_search_term(current, search)
+            elif mods & Qt.ControlModifier:
+                search = self.col.build_search_string(current, search)
+            elif mods & Qt.ShiftModifier:
+                search = self.col.build_search_string(current, search, match_any=True)
+        except InvalidInput as e:
+            show_invalid_search_error(e)
+        else:
+            self.browser.search_for(search)
+
     # Qt API
     ###########
 
@@ -544,7 +563,7 @@ class SidebarTreeView(QTreeView):
         return top
 
     def _filter_func(self, *terms: Union[str, SearchTerm]) -> Callable:
-        return lambda: self.browser.update_search(self.col.build_search_string(*terms))
+        return lambda: self.update_search(self.col.build_search_string(*terms))
 
     # Tree: Saved Searches
     ###########################