Boolean properties for Accessibility Object Model Phase 1

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

 /*
  * Copyright (C) 2012, Google 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 282 matching lines @@
       }
 
       ignoredReasons->push_back(IgnoredReason(AXLabelFor, controlObject));
     }
     return true;
   }
 
   Element* element = getNode()->isElementNode() ? toElement(getNode())
                                                 : getNode()->parentElement();
   if (!getLayoutObject() && (!element || !element->isInCanvasSubtree()) &&
-      !equalIgnoringASCIICase(getAttribute(aria_hiddenAttr), "false")) {
+      !AOMPropertyOrARIAAttributeIsFalse(AOMBooleanProperty::kHidden)) {
     if (ignoredReasons)
       ignoredReasons->push_back(IgnoredReason(AXNotRendered));
     return true;
   }
 
   if (m_role == UnknownRole) {
     if (ignoredReasons)
       ignoredReasons->push_back(IgnoredReason(AXUninteresting));
     return true;
   }
@@ skipping 721 matching lines @@
 
 bool AXNodeObject::isMenuButton() const {
   return roleValue() == MenuButtonRole;
 }
 
 bool AXNodeObject::isMeter() const {
   return roleValue() == MeterRole;
 }
 
 bool AXNodeObject::isMultiSelectable() const {
-  const AtomicString& ariaMultiSelectable =
-      getAttribute(aria_multiselectableAttr);
-  if (equalIgnoringASCIICase(ariaMultiSelectable, "true"))
-    return true;
-  if (equalIgnoringASCIICase(ariaMultiSelectable, "false"))
-    return false;
+  bool multiselectable = false;
+  if (getAOMPropertyOrARIAAttribute(AOMBooleanProperty::kMultiselectable,
+                                    multiselectable)) {
+    return multiselectable;
+  }
 
   return isHTMLSelectElement(getNode()) &&
          toHTMLSelectElement(*getNode()).isMultiple();
 }
 
 bool AXNodeObject::isNativeCheckboxOrRadio() const {
   Node* node = this->getNode();
   if (!isHTMLInputElement(node))
     return false;
 
@@ skipping 142 matching lines @@
 
 AccessibilityExpanded AXNodeObject::isExpanded() const {
   if (getNode() && isHTMLSummaryElement(*getNode())) {
     if (getNode()->parentNode() &&
         isHTMLDetailsElement(getNode()->parentNode()))
       return toElement(getNode()->parentNode())->hasAttribute(openAttr)
                  ? ExpandedExpanded
                  : ExpandedCollapsed;
   }
 
-  const AtomicString& expanded = getAttribute(aria_expandedAttr);
-  if (equalIgnoringASCIICase(expanded, "true"))
-    return ExpandedExpanded;
-  if (equalIgnoringASCIICase(expanded, "false"))
-    return ExpandedCollapsed;
+  bool expanded = false;
+  if (getAOMPropertyOrARIAAttribute(AOMBooleanProperty::kExpanded, expanded)) {
+    return expanded ? ExpandedExpanded : ExpandedCollapsed;
+  }
 
   return ExpandedUndefined;
 }
 
 bool AXNodeObject::isModal() const {
   if (roleValue() != DialogRole && roleValue() != AlertDialogRole)
     return false;
 
-  if (hasAttribute(aria_modalAttr)) {
-    const AtomicString& modal = getAttribute(aria_modalAttr);
-    if (equalIgnoringASCIICase(modal, "true"))
-      return true;
-    if (equalIgnoringASCIICase(modal, "false"))
-      return false;
-  }
+  bool modal = false;
+  if (getAOMPropertyOrARIAAttribute(AOMBooleanProperty::kModal, modal))
+    return modal;
 
   if (getNode() && isHTMLDialogElement(*getNode()))
     return toElement(getNode())->isInTopLayer();
 
   return false;
 }
 
 bool AXNodeObject::isPressed() const {
   if (!isButton())
     return false;
@@ skipping 30 matching lines @@
 
   return !hasEditableStyle(*node);
 }
 
 bool AXNodeObject::isRequired() const {
   Node* n = this->getNode();
   if (n && (n->isElementNode() && toElement(n)->isFormControlElement()) &&
       hasAttribute(requiredAttr))
     return toHTMLFormControlElement(n)->isRequired();
 
-  if (equalIgnoringASCIICase(getAttribute(aria_requiredAttr), "true"))
+  if (AOMPropertyOrARIAAttributeIsTrue(AOMBooleanProperty::kRequired))
     return true;
 
   return false;
 }
 
 bool AXNodeObject::canSetFocusAttribute() const {
   Node* node = getNode();
   if (!node)
     return false;
 
   if (isWebArea())
     return true;
 
   // Children of elements with an aria-activedescendant attribute should be
   // focusable if they have a (non-presentational) ARIA role.
   if (!isPresentational() && ariaRoleAttribute() != UnknownRole &&
       ancestorExposesActiveDescendant())
     return true;
 
   // NOTE: It would be more accurate to ask the document whether
   // setFocusedNode() would do anything. For example, setFocusedNode() will do
   // nothing if the current focused node will not relinquish the focus.
   if (isDisabledFormControl(node))
     return false;
 
   return node->isElementNode() && toElement(node)->supportsFocus();
 }
 
 bool AXNodeObject::canSetValueAttribute() const {
-  if (equalIgnoringASCIICase(getAttribute(aria_readonlyAttr), "true"))
+  if (AOMPropertyOrARIAAttributeIsTrue(AOMBooleanProperty::kReadOnly))
     return false;
 
   if (isProgressIndicator() || isSlider())
     return true;
 
   if (isTextControl() && !isNativeTextControl())
     return true;
 
   // Any node could be contenteditable, so isReadOnly should be relied upon
   // for this information for all elements.
@@ skipping 666 matching lines @@
   }
   for (const auto& ownedChild : ownedChildren)
     children.push_back(ownedChild);
 
   for (AXObject* child : children) {
     // Don't recurse into children that are explicitly marked as aria-hidden.
     // Note that we don't call isInertOrAriaHidden because that would return
     // true if any ancestor is hidden, but we need to be able to compute the
     // accessible name of object inside hidden subtrees (for example, if
     // aria-labelledby points to an object that's hidden).
-    if (equalIgnoringASCIICase(child->getAttribute(aria_hiddenAttr), "true"))
+    if (child->AOMPropertyOrARIAAttributeIsTrue(AOMBooleanProperty::kHidden))
       continue;
 
     // If we're going between two layoutObjects that are in separate
     // LayoutBoxes, add whitespace if it wasn't there already. Intuitively if
     // you have <span>Hello</span><span>World</span>, those are part of the same
     // LayoutBox so we should return "HelloWorld", but given
     // <div>Hello</div><div>World</div> the strings are in separate boxes so we
     // should return "Hello World".
     if (previous && accumulatedText.length() &&
         !isHTMLSpace(accumulatedText[accumulatedText.length() - 1])) {
@@ skipping 1250 matching lines @@
     return String();
   return toTextControlElement(node)->strippedPlaceholder();
 }
 
 DEFINE_TRACE(AXNodeObject) {
   visitor->trace(m_node);
   AXObject::trace(visitor);
 }
 
 }  // namespace blink