1 files changed, 92 insertions, 0 deletions
diff --git a/src/plugins/platforms/wasm/qwasmaccessibility.h b/src/plugins/platforms/wasm/qwasmaccessibility.h
new file mode 100644
index 0000000000..c4be7f0d72
--- /dev/null
+++ b/src/plugins/platforms/wasm/qwasmaccessibility.h
@@ -0,0 +1,92 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#ifndef QWASMACCESIBILITY_H
+#define QWASMACCESIBILITY_H
+
+#include <QtCore/qtconfigmacros.h>
+#include <QtGui/qtguiglobal.h>
+
+#if QT_CONFIG(accessibility)
+
+#include <QtCore/qhash.h>
+#include <private/qstdweb_p.h>
+#include <qpa/qplatformaccessibility.h>
+
+#include <emscripten/val.h>
+#include <QLoggingCategory>
+
+#include <map>
+#include <emscripten/bind.h>
+
+Q_DECLARE_LOGGING_CATEGORY(lcQpaAccessibility)
+
+class QWasmAccessibility : public QPlatformAccessibility
+{
+public:
+    QWasmAccessibility();
+    ~QWasmAccessibility();
+
+    static QWasmAccessibility* get();
+
+    static void addAccessibilityEnableButton(QWindow *window);
+    static void removeAccessibilityEnableButton(QWindow *window);
+
+private:
+    void addAccessibilityEnableButtonImpl(QWindow *window);
+    void removeAccessibilityEnableButtonImpl(QWindow *window);
+    void enableAccessibility();
+
+    static emscripten::val getContainer(QWindow *window);
+    static emscripten::val getContainer(QAccessibleInterface *iface);
+    static emscripten::val getDocument(const emscripten::val &container);
+    static emscripten::val getDocument(QAccessibleInterface *iface);
+    static QWindow *getWindow(QAccessibleInterface *iface);
+
+    emscripten::val createHtmlElement(QAccessibleInterface *iface);
+    void destroyHtmlElement(QAccessibleInterface *iface);
+    emscripten::val ensureHtmlElement(QAccessibleInterface *iface);
+    void setHtmlElementVisibility(QAccessibleInterface *iface, bool visible);
+    void setHtmlElementGeometry(QAccessibleInterface *iface);
+    void setHtmlElementGeometry(emscripten::val element, QRect geometry);
+    void setHtmlElementTextName(QAccessibleInterface *iface);
+    void setHtmlElementTextNameLE(QAccessibleInterface *iface);
+    void setHtmlElementDescription(QAccessibleInterface *iface);
+
+    void handleStaticTextUpdate(QAccessibleEvent *event);
+    void handleButtonUpdate(QAccessibleEvent *event);
+    void handleCheckBoxUpdate(QAccessibleEvent *event);
+    void handleDialogUpdate(QAccessibleEvent *event);
+    void handleMenuUpdate(QAccessibleEvent *event);
+    void handleToolUpdate(QAccessibleEvent *event);
+    void handleLineEditUpdate(QAccessibleEvent *event);
+    void handleRadioButtonUpdate(QAccessibleEvent *event);
+    void handleSpinBoxUpdate(QAccessibleEvent *event);
+    void handlePageTabUpdate(QAccessibleEvent *event);
+    void handleSliderUpdate(QAccessibleEvent *event);
+    void handleScrollBarUpdate(QAccessibleEvent *event);
+    void handlePageTabListUpdate(QAccessibleEvent *event);
+
+    void handleEventFromHtmlElement(const emscripten::val event);
+
+    void populateAccessibilityTree(QAccessibleInterface *iface);
+    void notifyAccessibilityUpdate(QAccessibleEvent *event) override;
+    void setRootObject(QObject *o) override;
+    void initialize() override;
+    void cleanup() override;
+
+public: // public for EMSCRIPTEN_BINDINGS
+    static void onHtmlEventReceived(emscripten::val event);
+
+private:
+    static QWasmAccessibility *s_instance;
+    QObject *m_rootObject = nullptr;
+    bool m_accessibilityEnabled = false;
+    std::map<QWindow *, std::tuple<emscripten::val, std::shared_ptr<qstdweb::EventCallback>>> m_enableButtons;
+    QHash<QAccessibleInterface *, emscripten::val> m_elements;
+
+};
+
+#endif // QT_CONFIG(accessibility)
+
+#endif