Expose images to accessibility

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

 /*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 679 matching lines @@
   // containers with meaningful information, the inclusion of a span can have
   // the side effect of causing the immediate parent accessible to be ignored.
   // This is especially problematic for platforms which have distinct roles for
   // textual block elements.
   if (isHTMLSpanElement(node)) {
     if (ignoredReasons)
       ignoredReasons->append(IgnoredReason(AXUninteresting));
     return true;
   }
 
-  // ignore images seemingly used as spacers
-  if (isImage()) {
-    // If the image can take focus, it should not be ignored, lest the user not
-    // be able to interact with something important.
-    if (canSetFocusAttribute())
-      return false;
-
-    if (node && node->isElementNode()) {
-      Element* elt = toElement(node);
-      const AtomicString& alt = elt->getAttribute(altAttr);
-      // don't ignore an image that has an alt tag
-      if (!alt.getString().containsOnlyWhitespace())
-        return false;
-      // informal standard is to ignore images with zero-length alt strings
-      if (!alt.isNull()) {
-        if (ignoredReasons)
-          ignoredReasons->append(IgnoredReason(AXEmptyAlt));
-        return true;
-      }
-    }
-
-    if (isNativeImage() && m_layoutObject->isImage()) {
-      // check for one-dimensional image
-      LayoutImage* image = toLayoutImage(m_layoutObject);
-      if (image->size().height() <= 1 || image->size().width() <= 1) {
-        if (ignoredReasons)
-          ignoredReasons->append(IgnoredReason(AXProbablyPresentational));
-        return true;
-      }
-
-      // Check whether laid out image was stretched from one-dimensional file
-      // image.
-      if (image->cachedImage()) {
-        LayoutSize imageSize = image->cachedImage()->imageSize(
-            LayoutObject::shouldRespectImageOrientation(m_layoutObject),
-            image->view()->zoomFactor());
-        if (imageSize.height() <= 1 || imageSize.width() <= 1) {
-          if (ignoredReasons)
-            ignoredReasons->append(IgnoredReason(AXProbablyPresentational));
-          return true;
-        }
-        return false;
-      }
-    }
+  if (isImage())
     return false;
-  }
 
   if (isCanvas()) {
     if (canvasHasFallbackContent())
       return false;
     LayoutHTMLCanvas* canvas = toLayoutHTMLCanvas(m_layoutObject);
     if (canvas->size().height() <= 1 || canvas->size().width() <= 1) {
       if (ignoredReasons)
         ignoredReasons->append(IgnoredReason(AXProbablyPresentational));
       return true;
     }
@@ skipping 1693 matching lines @@
 
 bool AXLayoutObject::elementAttributeValue(
     const QualifiedName& attributeName) const {
   if (!m_layoutObject)
     return false;
 
   return equalIgnoringCase(getAttribute(attributeName), "true");
 }
 
 }  // namespace blink