qwasmaccessibility.h

// Copyright (C) 2022 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QWASMACCESIBILITY_H

#define QWASMACCESIBILITY_H

#include <QtCore/qtconfigmacros.h>

#include <QtGui/qtguiglobal.h>

#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)

void QWasmAccessibilityEnable();

#if !QT_CONFIG(accessibility)

class QWasmAccessibility

public:

    static void addAccessibilityEnableButton(QWindow *window) {}

    static void onShowWindow(QWindow *) {}

    static void onRemoveWindow(QWindow *) {}

    static bool isEnabled() {

        return false;

    static void enable() {}

};

#else

class QWasmAccessibility : public QPlatformAccessibility

public:

    QWasmAccessibility();

    ~QWasmAccessibility();

    static void addAccessibilityEnableButton(QWindow *window);

    static void onShowWindow(QWindow *);

    static void onRemoveWindow(QWindow *);

    static bool isEnabled();

    static void enable();

private:

    static QWasmAccessibility *instance();

    void addEnableButton(QWindow *window);

    void enableAccessibility();

    void removeWindow(QWindow *window);

    emscripten::val getDescribedByContainer(QWindow *window);

    emscripten::val getDescribedByContainer(QAccessibleInterface *iface);

    emscripten::val getElementContainer(QWindow *window);

    emscripten::val getElementContainer(QAccessibleInterface *iface);

    emscripten::val getDocument(const emscripten::val &container);

    QWindow *getWindow(QAccessibleInterface *iface);

    bool isWindowNode(QAccessibleInterface *iface);

    emscripten::val createHtmlElement(QAccessibleInterface *iface);

    void destroyHtmlElement(QAccessibleInterface *iface);

    emscripten::val getHtmlElement(QAccessibleInterface *iface);

    void repairLinks(QAccessibleInterface *iface);

    void linkToParent(QAccessibleInterface *iface);

    void setHtmlElementVisibility(QAccessibleInterface *iface, bool visible);

    void setHtmlElementGeometry(QAccessibleInterface *iface);

    void setHtmlElementGeometry(emscripten::val element, QRect geometry);

    void setHtmlElementFocus(QAccessibleInterface *iface);

    void setHtmlElementDisabled(QAccessibleInterface *iface);

    void setHtmlElementOrientation(emscripten::val element, QAccessibleInterface *iface);

    void handleListItemUpdate(QAccessibleEvent *event);

    void handleStaticTextUpdate(QAccessibleEvent *event);

    void handleButtonUpdate(QAccessibleEvent *event);

    void handleCheckBoxUpdate(QAccessibleEvent *event);

    void handleGroupBoxUpdate(QAccessibleEvent *event);

    void handleSwitchUpdate(QAccessibleEvent *event);

    void handleDialogUpdate(QAccessibleEvent *event);

    void handleMenuUpdate(QAccessibleEvent *event);

    void handleToolUpdate(QAccessibleEvent *event);

    void handleLineEditUpdate(QAccessibleEvent *event);

    void handleRadioButtonUpdate(QAccessibleEvent *event);

    void handleDialUpdate(QAccessibleEvent *event);

    void handleSpinBoxUpdate(QAccessibleEvent *event);

    void handlePageTabUpdate(QAccessibleEvent *event);

    void handleSliderUpdate(QAccessibleEvent *event);

    void handleScrollBarUpdate(QAccessibleEvent *event);

    void handlePageTabListUpdate(QAccessibleEvent *event);

    void handleIdentifierUpdate(QAccessibleInterface *iface);

    void handleDescriptionChanged(QAccessibleInterface *iface);

    void handleAnnouncement(QAccessibleInterface *iface,

                            QAccessibleAnnouncementEvent *announcementEvent);

    void handleProgressBarUpdate(QAccessibleEvent *event);

    void handleEventFromHtmlElement(const emscripten::val event);

    void populateAccessibilityTree(QAccessibleInterface *iface);

    void createObject(QAccessibleInterface *iface);

    void removeObject(QAccessible::Id id);

    void unlinkParentForChildren(QAccessibleInterface *iface);

    void relinkParentForChildren(QAccessibleInterface *iface);

    void notifyAccessibilityUpdate(QAccessibleEvent *event) override;

    bool handleUpdateByEventType(QAccessibleEvent *event);

    void handleUpdateByInterfaceRole(QAccessibleEvent *event);

    void setAttribute(emscripten::val element, const std::string &attr, const std::string &val);

    void setAttribute(emscripten::val element, const std::string &attr, const char *val);

    void setAttribute(emscripten::val element, const std::string &attr, bool val);

    void setProperty(emscripten::val element, const std::string &attr, const std::string &val);

    void setProperty(emscripten::val element, const std::string &attr, const char *val);

    void setProperty(emscripten::val element, const std::string &attr, bool val);

    void setNamedAttribute(QAccessibleInterface *iface, const std::string &attribute, QAccessible::Text text);

    void setNamedProperty(QAccessibleInterface *iface, const std::string &property, QAccessible::Text text);

    void addEventListener(QAccessibleInterface *, emscripten::val element, const char *eventType);

    void sendEvent(QAccessibleInterface *iface, QAccessible::Event eventType);

private:

    std::map<QWindow *, std::tuple<emscripten::val, std::shared_ptr<qstdweb::EventCallback>>> m_enableButtons;

    QHash<QAccessible::Id, emscripten::val> m_elements;

    int m_eventHandlerIndex;

};

#endif // QT_CONFIG(accessibility)

#endif