Fix scrolling with keys / keyboard event listeners not working on answer side (#2099)

* Revert "Fix reviewer shortcuts being inaccessible due to IME"

This reverts commit 5bf031f1e3.

* Work around WebEngine/IME bug in Qt6

qt/aqt/reviewer.py

@@ -653,12 +653,6 @@ class Reviewer:
     def _onTypedAnswer(self, val: None) -> None:
         self.typedAnswer = val or ""
         self._showAnswer()
-        self.unfocus_typing_box()
-
-    def unfocus_typing_box(self) -> None:
-        # shifting focus to the bottom area works around a WebEngine/IME bug
-        # https://github.com/ankitects/anki/issues/1952
-        self.bottom.web.setFocus()
 
     # Bottom bar
     ##########################################################################

qt/aqt/webview.py

@@ -294,8 +294,9 @@ class AnkiWebView(QWebEngineView):
                     w.close()
                 else:
                     # in the main window, removes focus from type in area
-                    if mw.state == "review":
+                    parent = self.parent()
-                        mw.reviewer.unfocus_typing_box()
+                    assert isinstance(parent, QWidget)
+                    parent.setFocus()
                 break
             w = w.parent()
 

ts/reviewer/index.ts

@@ -237,3 +237,17 @@ export function _blockDefaultDragDropBehavior(): void {
     document.ondragover = handler;
     document.ondrop = handler;
 }
+
+// work around WebEngine/IME bug in Qt6
+// https://github.com/ankitects/anki/issues/1952
+const dummyButton = document.createElement("button");
+dummyButton.style.position = "absolute";
+dummyButton.style.left = "-9999px";
+document.addEventListener("focusout", (event) => {
+    const target = event.target;
+    if (target instanceof HTMLInputElement || target instanceof HTMLTextAreaElement) {
+        document.body.appendChild(dummyButton);
+        dummyButton.focus();
+        document.body.removeChild(dummyButton);
+    }
+});