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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "accessibility_activation_observer.h"
#include "content/browser/accessibility/browser_accessibility_state_impl.h"
namespace QtWebEngineCore {
namespace {
bool isAccessibilityEnabled() {
// On Linux accessibility is disabled by default due to performance issues,
// and can be re-enabled by setting the QTWEBENGINE_ENABLE_LINUX_ACCESSIBILITY environment
// variable. For details, see QTBUG-59922.
#ifdef Q_OS_LINUX
static bool accessibility_enabled
= qEnvironmentVariableIsSet("QTWEBENGINE_ENABLE_LINUX_ACCESSIBILITY");
#else
const bool accessibility_enabled = true;
#endif
return accessibility_enabled;
}
} // namespace
AccessibilityActivationObserver::AccessibilityActivationObserver()
{
if (isAccessibilityEnabled()) {
QAccessible::installActivationObserver(this);
if (QAccessible::isActive())
content::BrowserAccessibilityStateImpl::GetInstance()->EnableAccessibility();
}
}
AccessibilityActivationObserver::~AccessibilityActivationObserver()
{
QAccessible::removeActivationObserver(this);
}
void AccessibilityActivationObserver::accessibilityActiveChanged(bool active)
{
if (active)
content::BrowserAccessibilityStateImpl::GetInstance()->EnableAccessibility();
else
content::BrowserAccessibilityStateImpl::GetInstance()->DisableAccessibility();
}
} // namespace QtWebEngineCore
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