9 files changed, 8 insertions, 74 deletions
diff --git a/src/plugins/platforms/wasm/qwasmevent.cpp b/src/plugins/platforms/wasm/qwasmevent.cpp
index e6d5a20a24d..676d9c8e155 100644
--- a/src/plugins/platforms/wasm/qwasmevent.cpp
+++ b/src/plugins/platforms/wasm/qwasmevent.cpp
@@ -112,7 +112,7 @@ bool Event::isTargetedForQtElement() const
     return topElementClassName.startsWith("qt-"); // .e.g. qt-window-canvas
 }
 
-KeyEvent::KeyEvent(EventType type, emscripten::val event, QWasmDeadKeySupport *deadKeySupport) : Event(type, event)
+KeyEvent::KeyEvent(EventType type, emscripten::val event) : Event(type, event)
 {
     const auto code = event["code"].as<std::string>();
     const auto webKey = event["key"].as<std::string>();
@@ -137,8 +137,6 @@ KeyEvent::KeyEvent(EventType type, emscripten::val event, QWasmDeadKeySupport *d
 
     if (key == Qt::Key_Tab)
         text = "\t";
-
-    deadKeySupport->applyDeadKeyTranslations(this);
 }
 
 MouseEvent::MouseEvent(EventType type, emscripten::val event) : Event(type, event)
diff --git a/src/plugins/platforms/wasm/qwasmevent.h b/src/plugins/platforms/wasm/qwasmevent.h
index 9b6f11fd5da..ef1b6129e3c 100644
--- a/src/plugins/platforms/wasm/qwasmevent.h
+++ b/src/plugins/platforms/wasm/qwasmevent.h
@@ -17,8 +17,6 @@
 #include <emscripten/val.h>
 
 QT_BEGIN_NAMESPACE
-
-class QWasmDeadKeySupport;
 class QWindow;
 
 enum class EventType {
@@ -65,7 +63,7 @@ struct Event
 
 struct KeyEvent : public Event
 {
-    KeyEvent(EventType type, emscripten::val webEvent, QWasmDeadKeySupport *deadKeySupport);
+    KeyEvent(EventType type, emscripten::val webEvent);
 
     Qt::Key key;
     QFlags<Qt::KeyboardModifier> modifiers;
diff --git a/src/plugins/platforms/wasm/qwasmintegration.cpp b/src/plugins/platforms/wasm/qwasmintegration.cpp
index b56c57974d1..7417f316169 100644
--- a/src/plugins/platforms/wasm/qwasmintegration.cpp
+++ b/src/plugins/platforms/wasm/qwasmintegration.cpp
@@ -200,7 +200,7 @@ QWasmWindow *QWasmIntegration::createWindow(QWindow *window, WId nativeHandle) c
 {
     auto *wasmScreen = QWasmScreen::get(window->screen());
     QWasmCompositor *compositor = wasmScreen->compositor();
-    return new QWasmWindow(window, wasmScreen->deadKeySupport(), compositor,
+    return new QWasmWindow(window, compositor,
                            m_backingStores.value(window), nativeHandle);
 }
 
diff --git a/src/plugins/platforms/wasm/qwasmkeytranslator.cpp b/src/plugins/platforms/wasm/qwasmkeytranslator.cpp
index 8f5240d2d0c..90a4ee807fb 100644
--- a/src/plugins/platforms/wasm/qwasmkeytranslator.cpp
+++ b/src/plugins/platforms/wasm/qwasmkeytranslator.cpp
@@ -250,46 +250,4 @@ std::optional<Qt::Key> QWasmKeyTranslator::mapWebKeyTextToQtKey(const char *toFi
                                                                    : std::optional<Qt::Key>();
 }
 
-QWasmDeadKeySupport::QWasmDeadKeySupport() = default;
-
-QWasmDeadKeySupport::~QWasmDeadKeySupport() = default;
-
-void QWasmDeadKeySupport::applyDeadKeyTranslations(KeyEvent *event)
-{
-    if (event->deadKey) {
-        m_activeDeadKey = event->key;
-    } else if (m_activeDeadKey != Qt::Key_unknown
-               && (((m_keyModifiedByDeadKeyOnPress == Qt::Key_unknown
-                     && event->type == EventType::KeyDown))
-                   || (m_keyModifiedByDeadKeyOnPress == event->key
-                       && event->type == EventType::KeyUp))) {
-        const Qt::Key baseKey = event->key;
-        const Qt::Key translatedKey = translateBaseKeyUsingDeadKey(baseKey, m_activeDeadKey);
-        if (translatedKey != Qt::Key_unknown) {
-            event->key = translatedKey;
-
-            auto foundText = event->modifiers.testFlag(Qt::ShiftModifier)
-                    ? findKeyTextByKeyId(DiacriticalCharsKeyToTextUppercase, event->key)
-                    : findKeyTextByKeyId(DiacriticalCharsKeyToTextLowercase, event->key);
-            Q_ASSERT(foundText.has_value());
-            event->text = foundText->size() == 1 ? *foundText : QString();
-        }
-
-        if (!event->text.isEmpty()) {
-            if (event->type == EventType::KeyDown) {
-                // Assume the first keypress with an active dead key is treated as modified,
-                // regardless of whether it has actually been modified or not. Take into account
-                // only events that produce actual key text.
-                if (!event->text.isEmpty())
-                    m_keyModifiedByDeadKeyOnPress = baseKey;
-            } else {
-                Q_ASSERT(event->type == EventType::KeyUp);
-                Q_ASSERT(m_keyModifiedByDeadKeyOnPress == baseKey);
-                m_keyModifiedByDeadKeyOnPress = Qt::Key_unknown;
-                m_activeDeadKey = Qt::Key_unknown;
-            }
-        }
-    }
-}
-
 QT_END_NAMESPACE
diff --git a/src/plugins/platforms/wasm/qwasmkeytranslator.h b/src/plugins/platforms/wasm/qwasmkeytranslator.h
index 11a89e61930..3e18bcb8802 100644
--- a/src/plugins/platforms/wasm/qwasmkeytranslator.h
+++ b/src/plugins/platforms/wasm/qwasmkeytranslator.h
@@ -17,18 +17,5 @@ namespace QWasmKeyTranslator {
 std::optional<Qt::Key> mapWebKeyTextToQtKey(const char *toFind);
 }
 
-class QWasmDeadKeySupport
-{
-public:
-    explicit QWasmDeadKeySupport();
-    ~QWasmDeadKeySupport();
-
-    void applyDeadKeyTranslations(KeyEvent *event);
-
-private:
-    Qt::Key m_activeDeadKey = Qt::Key_unknown;
-    Qt::Key m_keyModifiedByDeadKeyOnPress = Qt::Key_unknown;
-};
-
 QT_END_NAMESPACE
 #endif // QWASMKEYTRANSLATOR_H
diff --git a/src/plugins/platforms/wasm/qwasmscreen.cpp b/src/plugins/platforms/wasm/qwasmscreen.cpp
index a2c8306b13b..bbfc71edc54 100644
--- a/src/plugins/platforms/wasm/qwasmscreen.cpp
+++ b/src/plugins/platforms/wasm/qwasmscreen.cpp
@@ -30,8 +30,7 @@ QWasmScreen::QWasmScreen(const emscripten::val &containerOrCanvas)
     : m_container(containerOrCanvas),
       m_intermediateContainer(emscripten::val::undefined()),
       m_shadowContainer(emscripten::val::undefined()),
-      m_compositor(new QWasmCompositor(this)),
-      m_deadKeySupport(std::make_unique<QWasmDeadKeySupport>())
+      m_compositor(new QWasmCompositor(this))
 {
     auto document = m_container["ownerDocument"];
 
diff --git a/src/plugins/platforms/wasm/qwasmscreen.h b/src/plugins/platforms/wasm/qwasmscreen.h
index a19818af2ff..6ddd4c736d0 100644
--- a/src/plugins/platforms/wasm/qwasmscreen.h
+++ b/src/plugins/platforms/wasm/qwasmscreen.h
@@ -22,7 +22,6 @@ class QPlatformOpenGLContext;
 class QWasmWindow;
 class QWasmBackingStore;
 class QWasmCompositor;
-class QWasmDeadKeySupport;
 class QOpenGLContext;
 
 class QWasmScreen : public QObject, public QPlatformScreen, public QWasmWindowTreeNode<>
@@ -41,7 +40,6 @@ public:
     QPointingDevice *tabletDevice() { return m_tabletDevice.get(); }
 
     QWasmCompositor *compositor();
-    QWasmDeadKeySupport *deadKeySupport() { return m_deadKeySupport.get(); }
 
     QList<QWasmWindow *> allWindows() const;
 
@@ -83,7 +81,6 @@ private:
     std::unique_ptr<QWasmCompositor> m_compositor;
     std::unique_ptr<QPointingDevice> m_touchDevice;
     std::unique_ptr<QPointingDevice> m_tabletDevice;
-    std::unique_ptr<QWasmDeadKeySupport> m_deadKeySupport;
     QRect m_geometry = QRect(0, 0, 100, 100);
     int m_depth = 32;
     QImage::Format m_format = QImage::Format_RGB32;
diff --git a/src/plugins/platforms/wasm/qwasmwindow.cpp b/src/plugins/platforms/wasm/qwasmwindow.cpp
index d318c977a90..264471794bd 100644
--- a/src/plugins/platforms/wasm/qwasmwindow.cpp
+++ b/src/plugins/platforms/wasm/qwasmwindow.cpp
@@ -40,13 +40,12 @@ QT_BEGIN_NAMESPACE
 
 Q_GUI_EXPORT int qt_defaultDpiX();
 
-QWasmWindow::QWasmWindow(QWindow *w, QWasmDeadKeySupport *deadKeySupport,
+QWasmWindow::QWasmWindow(QWindow *w,
                          QWasmCompositor *compositor, QWasmBackingStore *backingStore,
                          WId nativeHandle)
     : QPlatformWindow(w),
       m_compositor(compositor),
       m_backingStore(backingStore),
-      m_deadKeySupport(deadKeySupport),
       m_document(dom::document()),
       m_decoratedWindow(m_document.call<emscripten::val>("createElement", emscripten::val("div"))),
       m_window(m_document.call<emscripten::val>("createElement", emscripten::val("div"))),
@@ -216,9 +215,9 @@ void QWasmWindow::registerEventHandlers()
         [this](emscripten::val event) { this->handleWheelEvent(event); });
 
     m_keyDownCallback = QWasmEventHandler(m_window, "keydown",
-        [this](emscripten::val event) { this->handleKeyEvent(KeyEvent(EventType::KeyDown, event, m_deadKeySupport)); });
+        [this](emscripten::val event) { this->handleKeyEvent(KeyEvent(EventType::KeyDown, event)); });
     m_keyUpCallback =QWasmEventHandler(m_window, "keyup",
-        [this](emscripten::val event) {this->handleKeyEvent(KeyEvent(EventType::KeyUp, event, m_deadKeySupport)); });
+        [this](emscripten::val event) {this->handleKeyEvent(KeyEvent(EventType::KeyUp, event)); });
 
     m_inputCallback = QWasmEventHandler(m_window, "input",
         [this](emscripten::val event){ handleInputEvent(event); });
diff --git a/src/plugins/platforms/wasm/qwasmwindow.h b/src/plugins/platforms/wasm/qwasmwindow.h
index 8e6e5021dcf..87f4d6644c7 100644
--- a/src/plugins/platforms/wasm/qwasmwindow.h
+++ b/src/plugins/platforms/wasm/qwasmwindow.h
@@ -31,7 +31,6 @@ class EventCallback;
 
 struct KeyEvent;
 struct PointerEvent;
-class QWasmDeadKeySupport;
 struct WheelEvent;
 
 Q_DECLARE_LOGGING_CATEGORY(qLcQpaWasmInputContext)
@@ -41,7 +40,7 @@ class QWasmWindow final : public QPlatformWindow,
                           public QNativeInterface::Private::QWasmWindow
 {
 public:
-    QWasmWindow(QWindow *w, QWasmDeadKeySupport *deadKeySupport, QWasmCompositor *compositor,
+    QWasmWindow(QWindow *w, QWasmCompositor *compositor,
                 QWasmBackingStore *backingStore, WId nativeHandle);
     ~QWasmWindow() final;
 
@@ -159,7 +158,6 @@ private:
 
     QWasmCompositor *m_compositor = nullptr;
     QWasmBackingStore *m_backingStore = nullptr;
-    QWasmDeadKeySupport *m_deadKeySupport;
     QRect m_normalGeometry {0, 0, 0 ,0};
 
     emscripten::val m_document;