187 lines
9.6 KiB
C++
187 lines
9.6 KiB
C++
/*
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* Copyright (C) 2008-2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#if HAVE(ACCESSIBILITY)
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#include "AccessibilityController.h"
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#include "AccessibilityUIElement.h"
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#include "JSBasics.h"
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// Static Value Getters
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static JSValueRef getFocusedElementCallback(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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return AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->focusedElement());
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}
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static JSValueRef getRootElementCallback(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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return AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->rootElement());
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}
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// Object Creation
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void AccessibilityController::makeWindowObject(JSContextRef context)
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{
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WTR::setGlobalObjectProperty(context, "accessibilityController", JSObjectMake(context, createJSClass().get(), this));
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}
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static JSValueRef logFocusEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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controller->setLogFocusEvents(true);
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return JSValueMakeUndefined(ctx);
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}
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static JSValueRef logValueChangeEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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controller->setLogValueChangeEvents(true);
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return JSValueMakeUndefined(ctx);
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}
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static JSValueRef logScrollingStartEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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controller->setLogScrollingStartEvents(true);
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return JSValueMakeUndefined(ctx);
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}
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static JSValueRef logAccessibilityEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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controller->setLogAccessibilityEvents(true);
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return JSValueMakeUndefined(ctx);
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}
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static JSValueRef getElementAtPointCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
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{
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int x = 0;
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int y = 0;
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if (argumentCount == 2) {
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x = JSValueToNumber(context, arguments[0], exception);
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y = JSValueToNumber(context, arguments[1], exception);
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}
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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return AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->elementAtPoint(x, y));
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}
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static JSValueRef getAccessibleElementByIdCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
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{
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JSStringRef idAttribute = 0;
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if (argumentCount == 1)
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idAttribute = JSValueToStringCopy(context, arguments[0], exception);
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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JSValueRef result = AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->accessibleElementById(idAttribute));
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if (idAttribute)
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JSStringRelease(idAttribute);
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return result;
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}
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static JSValueRef addNotificationListenerCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
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{
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if (argumentCount != 1)
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return JSValueMakeBoolean(context, false);
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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JSObjectRef callback = JSValueToObject(context, arguments[0], exception);
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bool succeeded = controller->addNotificationListener(callback);
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return JSValueMakeBoolean(context, succeeded);
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}
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static JSValueRef removeNotificationListenerCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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controller->removeNotificationListener();
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return JSValueMakeUndefined(context);
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}
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static JSValueRef enableEnhancedAccessibilityCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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if (argumentCount == 1)
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controller->enableEnhancedAccessibility(JSValueToBoolean(context, arguments[0]));
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return JSValueMakeUndefined(context);
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}
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static JSValueRef getEnhancedAccessibilityEnabledCallback(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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return JSValueMakeBoolean(context, controller->enhancedAccessibilityEnabled());
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}
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static JSValueRef getPlatformNameCallback(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
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{
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AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));
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JSRetainPtr<JSStringRef> platformName(controller->platformName());
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if (!platformName.get())
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return JSValueMakeUndefined(context);
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return JSValueMakeString(context, platformName.get());
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}
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JSRetainPtr<JSClassRef> AccessibilityController::createJSClass()
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{
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static constexpr JSStaticFunction functions[] = {
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{ "logFocusEvents", logFocusEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "logValueChangeEvents", logValueChangeEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "logScrollingStartEvents", logScrollingStartEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "logAccessibilityEvents", logAccessibilityEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "elementAtPoint", getElementAtPointCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "accessibleElementById", getAccessibleElementByIdCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "addNotificationListener", addNotificationListenerCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "removeNotificationListener", removeNotificationListenerCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "enableEnhancedAccessibility", enableEnhancedAccessibilityCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ 0, 0, 0 }
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};
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static constexpr JSStaticValue values[] = {
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{ "focusedElement", getFocusedElementCallback, 0, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "rootElement", getRootElementCallback, 0, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "enhancedAccessibilityEnabled", getEnhancedAccessibilityEnabledCallback, 0, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ "platformName", getPlatformNameCallback, 0, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
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{ 0, 0, 0, 0 }
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};
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static const JSClassDefinition definition = {
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0, kJSClassAttributeNone, "AccessibilityController", 0, values, functions,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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return adopt(JSClassCreate(&definition));
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}
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void AccessibilityController::resetToConsistentState()
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{
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setLogFocusEvents(false);
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setLogValueChangeEvents(false);
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setLogScrollingStartEvents(false);
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setLogAccessibilityEvents(false);
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platformResetToConsistentState();
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}
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#endif // HAVE(ACCESSIBILITY)
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