https://bugs.webkit.org/show_bug.cgi?id=224280
rdar://76348740
Reviewed by Chris Fleizach.
Source/WebCore:
Test: accessibility/ios-simulator/image-overlay-elements.html
Exposes to accessibility clients the elements created by
WebPage::requestTextRecognition for static images. This allows clients
to present the recognized text in images to assistive technology users.
- Added a new AXObject subclass, AXImage, to encapsulate this functionality.
This class can be expanded to offload some of the image specific code
contained in AccessibilityRenderObject, AccessibilityNodeObject,
AccessibilityObject and others.
- Since requestTextRecognition is an async call, added an AXNotification
to notify clients when the image overlay elements are available for
consumption.
* Sources.txt:
* WebCore.xcodeproj/project.pbxproj:
* accessibility/AXImage.cpp: Added.
(WebCore::AXImage::AXImage):
(WebCore::AXImage::create):
(WebCore::AXImage::roleValue const):
(WebCore::AXImage::imageOverlayElements):
* accessibility/AXImage.h: Added.
* accessibility/AXLogger.cpp:
(WebCore::operator<<):
* accessibility/AXObjectCache.cpp:
(WebCore::isSimpleImage): Determines whether a given element is a static
image.
(WebCore::createFromRenderer): Instantiate an AXImage object when
appropriate.
* accessibility/AXObjectCache.h:
* accessibility/AccessibilityNodeObject.cpp:
(WebCore::AccessibilityNodeObject::canHaveChildren const): Images can
have children.
* accessibility/AccessibilityObject.h:
* accessibility/AccessibilityObjectInterface.h:
* accessibility/ios/AXObjectCacheIOS.mm:
(WebCore::AXObjectCache::notificationPlatformName):
* accessibility/ios/WebAccessibilityObjectWrapperIOS.mm:
(-[WebAccessibilityObjectWrapper accessibilityElements]):
(-[WebAccessibilityObjectWrapper accessibilityImageOverlayElements]):
* accessibility/isolatedtree/AXIsolatedObject.cpp:
(WebCore::AXIsolatedObject::isAXImageInstance const):
* accessibility/isolatedtree/AXIsolatedObject.h:
* accessibility/mac/AXObjectCacheMac.mm:
(WebCore::AXObjectCache::postPlatformNotification):
* accessibility/mac/WebAccessibilityObjectWrapperMac.mm:
(-[WebAccessibilityObjectWrapper ALLOW_DEPRECATED_IMPLEMENTATIONS_END]):
(-[WebAccessibilityObjectWrapper accessibilityAttributeValue:]):
Tools:
* WebKitTestRunner/InjectedBundle/AccessibilityUIElement.cpp:
(WTR::AccessibilityUIElement::children const):
* WebKitTestRunner/InjectedBundle/AccessibilityUIElement.h:
* WebKitTestRunner/InjectedBundle/Bindings/AccessibilityUIElement.idl:
* WebKitTestRunner/InjectedBundle/ios/AccessibilityUIElementIOS.mm:
(WTR::AccessibilityUIElement::children const):
(WTR::AccessibilityUIElement::imageOverlayElements const):
* WebKitTestRunner/InjectedBundle/mac/AccessibilityUIElementMac.mm:
(WTR::AccessibilityUIElement::children const):
(WTR::AccessibilityUIElement::imageOverlayElements const):
LayoutTests:
* accessibility/image-link-expected.txt:
* accessibility/ios-simulator/image-overlay-elements-expected.txt: Added.
* accessibility/ios-simulator/image-overlay-elements.html: Added.
* accessibility/resources/green-400x400.png: Added.
Canonical link: https://commits.webkit.org/239068@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@279171 268f45cc-cd09-0410-ab3c-d52691b4dbfc
7c0f13f37e