Boolean properties for Accessibility Object Model Phase 1

third_party/WebKit/Source/core/dom/AccessibleNode.cpp

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/dom/AccessibleNode.h"
 
 #include "core/dom/AXObjectCache.h"
 #include "core/dom/Element.h"
 #include "core/dom/QualifiedName.h"
 #include "core/frame/Settings.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
 AccessibleNode::AccessibleNode(Element* element) : element_(element) {
   DCHECK(RuntimeEnabledFeatures::accessibilityObjectModelEnabled());
 }
 
 AccessibleNode::~AccessibleNode() {}
 
 // static
 const AtomicString& AccessibleNode::GetProperty(Element* element,
                                                 AOMStringProperty property) {
   if (!element)
     return g_null_atom;
 
   if (AccessibleNode* accessible_node = element->ExistingAccessibleNode()) {
     for (const auto& item : accessible_node->string_properties_) {
-      if (item.first == property)
+      if (item.first == property && !item.second.IsNull())
         return item.second;
     }
   }
 
   return g_null_atom;
 }
 
 // static
+bool AccessibleNode::GetProperty(Element* element,
+                                 AOMBooleanProperty property,
+                                 bool& is_null) {
+  is_null = true;
+  if (!element)
+    return false;
+
+  if (AccessibleNode* accessible_node = element->ExistingAccessibleNode()) {
+    for (const auto& item : accessible_node->boolean_properties_) {
+      if (item.first == property) {
+        is_null = false;
+        return item.second;
+      }
+    }
+  }
+
+  return false;
+}
+
+// static
 const AtomicString& AccessibleNode::GetPropertyOrARIAAttribute(
     Element* element,
     AOMStringProperty property) {
   if (!element)
     return g_null_atom;
 
   const AtomicString& result = GetProperty(element, property);
   if (!result.IsNull())
     return result;
 
   // Fall back on the equivalent ARIA attribute.
   switch (property) {
     case AOMStringProperty::kAutocomplete:
-      return element->getAttribute(aria_autocompleteAttr);
+      return element->FastGetAttribute(aria_autocompleteAttr);
     case AOMStringProperty::kChecked:
-      return element->getAttribute(aria_checkedAttr);
+      return element->FastGetAttribute(aria_checkedAttr);
     case AOMStringProperty::kCurrent:
-      return element->getAttribute(aria_currentAttr);
+      return element->FastGetAttribute(aria_currentAttr);
     case AOMStringProperty::kInvalid:
-      return element->getAttribute(aria_invalidAttr);
+      return element->FastGetAttribute(aria_invalidAttr);
     case AOMStringProperty::kKeyShortcuts:
-      return element->getAttribute(aria_keyshortcutsAttr);
+      return element->FastGetAttribute(aria_keyshortcutsAttr);
     case AOMStringProperty::kLabel:
-      return element->getAttribute(aria_labelAttr);
+      return element->FastGetAttribute(aria_labelAttr);
     case AOMStringProperty::kLive:
-      return element->getAttribute(aria_liveAttr);
+      return element->FastGetAttribute(aria_liveAttr);
     case AOMStringProperty::kOrientation:
-      return element->getAttribute(aria_orientationAttr);
+      return element->FastGetAttribute(aria_orientationAttr);
     case AOMStringProperty::kPlaceholder:
-      return element->getAttribute(aria_placeholderAttr);
+      return element->FastGetAttribute(aria_placeholderAttr);
     case AOMStringProperty::kRelevant:
-      return element->getAttribute(aria_relevantAttr);
+      return element->FastGetAttribute(aria_relevantAttr);
     case AOMStringProperty::kRole:
-      return element->getAttribute(roleAttr);
+      return element->FastGetAttribute(roleAttr);
     case AOMStringProperty::kRoleDescription:
-      return element->getAttribute(aria_roledescriptionAttr);
+      return element->FastGetAttribute(aria_roledescriptionAttr);
     case AOMStringProperty::kSort:
-      return element->getAttribute(aria_sortAttr);
+      return element->FastGetAttribute(aria_sortAttr);
     case AOMStringProperty::kValueText:
-      return element->getAttribute(aria_valuetextAttr);
+      return element->FastGetAttribute(aria_valuetextAttr);
   }
 
   NOTREACHED();
   return g_null_atom;
 }
 
+// static
+bool AccessibleNode::GetPropertyOrARIAAttribute(Element* element,
+                                                AOMBooleanProperty property,
+                                                bool& is_null) {
+  is_null = true;
+  if (!element)
+    return false;
+
+  bool result = GetProperty(element, property, is_null);
+  if (!is_null)
+    return result;
+
+  // Fall back on the equivalent ARIA attribute.
+  AtomicString attr_value;
+  switch (property) {
+    case AOMBooleanProperty::kAtomic:
+      attr_value = element->FastGetAttribute(aria_atomicAttr);
+      break;
+    case AOMBooleanProperty::kBusy:
+      attr_value = element->FastGetAttribute(aria_busyAttr);
+      break;
+    case AOMBooleanProperty::kDisabled:
+      attr_value = element->FastGetAttribute(aria_disabledAttr);
+      break;
+    case AOMBooleanProperty::kExpanded:
+      attr_value = element->FastGetAttribute(aria_expandedAttr);
+      break;
+    case AOMBooleanProperty::kHidden:
+      attr_value = element->FastGetAttribute(aria_hiddenAttr);
+      break;
+    case AOMBooleanProperty::kModal:
+      attr_value = element->FastGetAttribute(aria_modalAttr);
+      break;
+    case AOMBooleanProperty::kMultiline:
+      attr_value = element->FastGetAttribute(aria_multilineAttr);
+      break;
+    case AOMBooleanProperty::kMultiselectable:
+      attr_value = element->FastGetAttribute(aria_multiselectableAttr);
+      break;
+    case AOMBooleanProperty::kReadOnly:
+      attr_value = element->FastGetAttribute(aria_readonlyAttr);
+      break;
+    case AOMBooleanProperty::kRequired:
+      attr_value = element->FastGetAttribute(aria_requiredAttr);
+      break;
+    case AOMBooleanProperty::kSelected:
+      attr_value = element->FastGetAttribute(aria_selectedAttr);
+      break;
+  }
+
+  is_null = attr_value.IsNull();
+  return EqualIgnoringASCIICase(attr_value, "true");
+}
+
+bool AccessibleNode::atomic(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kAtomic, is_null);
+}
+
+void AccessibleNode::setAtomic(bool atomic, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kAtomic, atomic, is_null);
+  NotifyAttributeChanged(aria_atomicAttr);
+}
+
 AtomicString AccessibleNode::autocomplete() const {
   return GetProperty(element_, AOMStringProperty::kAutocomplete);
 }
 
 void AccessibleNode::setAutocomplete(const AtomicString& autocomplete) {
   SetStringProperty(AOMStringProperty::kAutocomplete, autocomplete);
   NotifyAttributeChanged(aria_autocompleteAttr);
 }
 
+bool AccessibleNode::busy(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kBusy, is_null);
+}
+
+void AccessibleNode::setBusy(bool busy, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kBusy, busy, is_null);
+  NotifyAttributeChanged(aria_busyAttr);
+}
+
 AtomicString AccessibleNode::checked() const {
   return GetProperty(element_, AOMStringProperty::kChecked);
 }
 
 void AccessibleNode::setChecked(const AtomicString& checked) {
   SetStringProperty(AOMStringProperty::kChecked, checked);
   NotifyAttributeChanged(aria_checkedAttr);
 }
 
 AtomicString AccessibleNode::current() const {
   return GetProperty(element_, AOMStringProperty::kCurrent);
 }
 
 void AccessibleNode::setCurrent(const AtomicString& current) {
   SetStringProperty(AOMStringProperty::kCurrent, current);
 
   if (AXObjectCache* cache = element_->GetDocument().ExistingAXObjectCache())
     cache->HandleAttributeChanged(aria_currentAttr, element_);
 }
 
+bool AccessibleNode::disabled(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kDisabled, is_null);
+}
+
+void AccessibleNode::setDisabled(bool disabled, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kDisabled, disabled, is_null);
+  NotifyAttributeChanged(aria_disabledAttr);
+}
+
+bool AccessibleNode::expanded(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kExpanded, is_null);
+}
+
+void AccessibleNode::setExpanded(bool expanded, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kExpanded, expanded, is_null);
+  NotifyAttributeChanged(aria_expandedAttr);
+}
+
+bool AccessibleNode::hidden(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kHidden, is_null);
+}
+
+void AccessibleNode::setHidden(bool hidden, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kHidden, hidden, is_null);
+  NotifyAttributeChanged(aria_hiddenAttr);
+}
+
 AtomicString AccessibleNode::invalid() const {
   return GetProperty(element_, AOMStringProperty::kInvalid);
 }
 
 void AccessibleNode::setInvalid(const AtomicString& invalid) {
   SetStringProperty(AOMStringProperty::kInvalid, invalid);
   NotifyAttributeChanged(aria_invalidAttr);
 }
 
 AtomicString AccessibleNode::keyShortcuts() const {
@@ skipping 16 matching lines @@
 
 AtomicString AccessibleNode::live() const {
   return GetProperty(element_, AOMStringProperty::kLive);
 }
 
 void AccessibleNode::setLive(const AtomicString& live) {
   SetStringProperty(AOMStringProperty::kLive, live);
   NotifyAttributeChanged(aria_liveAttr);
 }
 
+bool AccessibleNode::modal(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kModal, is_null);
+}
+
+void AccessibleNode::setModal(bool modal, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kModal, modal, is_null);
+  NotifyAttributeChanged(aria_modalAttr);
+}
+
+bool AccessibleNode::multiline(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kMultiline, is_null);
+}
+
+void AccessibleNode::setMultiline(bool multiline, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kMultiline, multiline, is_null);
+  NotifyAttributeChanged(aria_multilineAttr);
+}
+
+bool AccessibleNode::multiselectable(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kMultiselectable, is_null);
+}
+
+void AccessibleNode::setMultiselectable(bool multiselectable, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kMultiselectable, multiselectable,
+                     is_null);
+  NotifyAttributeChanged(aria_multiselectableAttr);
+}
+
 AtomicString AccessibleNode::orientation() const {
   return GetProperty(element_, AOMStringProperty::kOrientation);
 }
 
 void AccessibleNode::setOrientation(const AtomicString& orientation) {
   SetStringProperty(AOMStringProperty::kOrientation, orientation);
   NotifyAttributeChanged(aria_orientationAttr);
 }
 
 AtomicString AccessibleNode::placeholder() const {
   return GetProperty(element_, AOMStringProperty::kPlaceholder);
 }
 
 void AccessibleNode::setPlaceholder(const AtomicString& placeholder) {
   SetStringProperty(AOMStringProperty::kPlaceholder, placeholder);
   NotifyAttributeChanged(aria_placeholderAttr);
 }
 
+bool AccessibleNode::readOnly(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kReadOnly, is_null);
+}
+
+void AccessibleNode::setReadOnly(bool read_only, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kReadOnly, read_only, is_null);
+  NotifyAttributeChanged(aria_readonlyAttr);
+}
+
 AtomicString AccessibleNode::relevant() const {
   return GetProperty(element_, AOMStringProperty::kRelevant);
 }
 
 void AccessibleNode::setRelevant(const AtomicString& relevant) {
   SetStringProperty(AOMStringProperty::kRelevant, relevant);
   NotifyAttributeChanged(aria_relevantAttr);
 }
 
+bool AccessibleNode::required(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kRequired, is_null);
+}
+
+void AccessibleNode::setRequired(bool required, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kRequired, required, is_null);
+  NotifyAttributeChanged(aria_requiredAttr);
+}
+
 AtomicString AccessibleNode::role() const {
   return GetProperty(element_, AOMStringProperty::kRole);
 }
 
 void AccessibleNode::setRole(const AtomicString& role) {
   SetStringProperty(AOMStringProperty::kRole, role);
   NotifyAttributeChanged(roleAttr);
 }
 
 AtomicString AccessibleNode::roleDescription() const {
   return GetProperty(element_, AOMStringProperty::kRoleDescription);
 }
 
 void AccessibleNode::setRoleDescription(const AtomicString& role_description) {
   SetStringProperty(AOMStringProperty::kRoleDescription, role_description);
   NotifyAttributeChanged(aria_roledescriptionAttr);
 }
 
+bool AccessibleNode::selected(bool& is_null) const {
+  return GetProperty(element_, AOMBooleanProperty::kSelected, is_null);
+}
+
+void AccessibleNode::setSelected(bool selected, bool is_null) {
+  SetBooleanProperty(AOMBooleanProperty::kSelected, selected, is_null);
+  NotifyAttributeChanged(aria_selectedAttr);
+}
+
 AtomicString AccessibleNode::sort() const {
   return GetProperty(element_, AOMStringProperty::kSort);
 }
 
 void AccessibleNode::setSort(const AtomicString& sort) {
   SetStringProperty(AOMStringProperty::kSort, sort);
   NotifyAttributeChanged(aria_sortAttr);
 }
 
 AtomicString AccessibleNode::valueText() const {
@@ skipping 10 matching lines @@
   for (auto& item : string_properties_) {
     if (item.first == property) {
       item.second = value;
       return;
     }
   }
 
   string_properties_.push_back(std::make_pair(property, value));
 }
 
+void AccessibleNode::SetBooleanProperty(AOMBooleanProperty property,
+                                        bool value,
+                                        bool is_null) {
+  for (size_t i = 0; i < boolean_properties_.size(); i++) {
+    auto& item = boolean_properties_[i];
+    if (item.first == property) {
+      if (is_null)
+        boolean_properties_.erase(i);
+      else
+        item.second = value;
+      return;
+    }
+  }
+
+  boolean_properties_.push_back(std::make_pair(property, value));
+}
+
 void AccessibleNode::NotifyAttributeChanged(
     const blink::QualifiedName& attribute) {
   // TODO(dmazzoni): Make a cleaner API for this rather than pretending
   // the DOM attribute changed.
   if (AXObjectCache* cache = GetAXObjectCache())
     cache->HandleAttributeChanged(attribute, element_);
 }
 
 AXObjectCache* AccessibleNode::GetAXObjectCache() {
   return element_->GetDocument().ExistingAXObjectCache();
 }
 
 DEFINE_TRACE(AccessibleNode) {
   visitor->Trace(element_);
 }
 
 }  // namespace blink