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1 /* | 1 /* |
2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 */ | 27 */ |
28 | 28 |
29 #include "modules/accessibility/AXNodeObject.h" | 29 #include "modules/accessibility/AXNodeObject.h" |
30 | 30 |
31 #include "core/InputTypeNames.h" | 31 #include "core/InputTypeNames.h" |
32 #include "core/dom/DocumentUserGestureToken.h" | 32 #include "core/dom/DocumentUserGestureToken.h" |
33 #include "core/dom/Element.h" | 33 #include "core/dom/Element.h" |
34 #include "core/dom/NodeTraversal.h" | 34 #include "core/dom/NodeTraversal.h" |
| 35 #include "core/dom/QualifiedName.h" |
35 #include "core/dom/Text.h" | 36 #include "core/dom/Text.h" |
36 #include "core/dom/shadow/FlatTreeTraversal.h" | 37 #include "core/dom/shadow/FlatTreeTraversal.h" |
37 #include "core/editing/EditingUtilities.h" | 38 #include "core/editing/EditingUtilities.h" |
38 #include "core/editing/markers/DocumentMarkerController.h" | 39 #include "core/editing/markers/DocumentMarkerController.h" |
39 #include "core/frame/FrameView.h" | 40 #include "core/frame/FrameView.h" |
40 #include "core/html/HTMLDListElement.h" | 41 #include "core/html/HTMLDListElement.h" |
41 #include "core/html/HTMLFieldSetElement.h" | 42 #include "core/html/HTMLFieldSetElement.h" |
42 #include "core/html/HTMLFrameElementBase.h" | 43 #include "core/html/HTMLFrameElementBase.h" |
43 #include "core/html/HTMLImageElement.h" | 44 #include "core/html/HTMLImageElement.h" |
44 #include "core/html/HTMLInputElement.h" | 45 #include "core/html/HTMLInputElement.h" |
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63 #include "core/svg/SVGElement.h" | 64 #include "core/svg/SVGElement.h" |
64 #include "modules/accessibility/AXObjectCacheImpl.h" | 65 #include "modules/accessibility/AXObjectCacheImpl.h" |
65 #include "platform/UserGestureIndicator.h" | 66 #include "platform/UserGestureIndicator.h" |
66 #include "platform/text/PlatformLocale.h" | 67 #include "platform/text/PlatformLocale.h" |
67 #include "wtf/text/StringBuilder.h" | 68 #include "wtf/text/StringBuilder.h" |
68 | 69 |
69 namespace blink { | 70 namespace blink { |
70 | 71 |
71 using namespace HTMLNames; | 72 using namespace HTMLNames; |
72 | 73 |
| 74 class SparseAttributeSetter { |
| 75 USING_FAST_MALLOC(SparseAttributeSetter); |
| 76 |
| 77 public: |
| 78 virtual void run(const AXObject&, |
| 79 AXSparseAttributeClient&, |
| 80 const AtomicString& value) = 0; |
| 81 }; |
| 82 |
| 83 class BoolAttributeSetter : public SparseAttributeSetter { |
| 84 public: |
| 85 BoolAttributeSetter(AXBoolAttribute attribute) : m_attribute(attribute) {} |
| 86 |
| 87 private: |
| 88 AXBoolAttribute m_attribute; |
| 89 |
| 90 void run(const AXObject& obj, |
| 91 AXSparseAttributeClient& attributeMap, |
| 92 const AtomicString& value) override { |
| 93 attributeMap.addBoolAttribute(m_attribute, |
| 94 equalIgnoringCase(value, "true")); |
| 95 } |
| 96 }; |
| 97 |
| 98 class StringAttributeSetter : public SparseAttributeSetter { |
| 99 public: |
| 100 StringAttributeSetter(AXStringAttribute attribute) : m_attribute(attribute) {} |
| 101 |
| 102 private: |
| 103 AXStringAttribute m_attribute; |
| 104 |
| 105 void run(const AXObject& obj, |
| 106 AXSparseAttributeClient& attributeMap, |
| 107 const AtomicString& value) override { |
| 108 attributeMap.addStringAttribute(m_attribute, value); |
| 109 } |
| 110 }; |
| 111 |
| 112 class ObjectAttributeSetter : public SparseAttributeSetter { |
| 113 public: |
| 114 ObjectAttributeSetter(AXObjectAttribute attribute) : m_attribute(attribute) {} |
| 115 |
| 116 private: |
| 117 AXObjectAttribute m_attribute; |
| 118 |
| 119 void run(const AXObject& obj, |
| 120 AXSparseAttributeClient& attributeMap, |
| 121 const AtomicString& value) override { |
| 122 if (value.isNull() || value.isEmpty()) |
| 123 return; |
| 124 |
| 125 Node* node = obj.getNode(); |
| 126 if (!node || !node->isElementNode()) |
| 127 return; |
| 128 Element* target = toElement(node)->treeScope().getElementById(value); |
| 129 if (!target) |
| 130 return; |
| 131 AXObject* axTarget = obj.axObjectCache().getOrCreate(target); |
| 132 if (axTarget) |
| 133 attributeMap.addObjectAttribute(m_attribute, *axTarget); |
| 134 } |
| 135 }; |
| 136 |
| 137 class ObjectVectorAttributeSetter : public SparseAttributeSetter { |
| 138 public: |
| 139 ObjectVectorAttributeSetter(AXObjectVectorAttribute attribute) |
| 140 : m_attribute(attribute) {} |
| 141 |
| 142 private: |
| 143 AXObjectVectorAttribute m_attribute; |
| 144 |
| 145 void run(const AXObject& obj, |
| 146 AXSparseAttributeClient& attributeMap, |
| 147 const AtomicString& value) override { |
| 148 Node* node = obj.getNode(); |
| 149 if (!node || !node->isElementNode()) |
| 150 return; |
| 151 |
| 152 String attributeValue = value.getString(); |
| 153 if (attributeValue.isEmpty()) |
| 154 return; |
| 155 |
| 156 attributeValue.simplifyWhiteSpace(); |
| 157 Vector<String> ids; |
| 158 attributeValue.split(' ', ids); |
| 159 if (ids.isEmpty()) |
| 160 return; |
| 161 |
| 162 HeapVector<Member<AXObject>> objects; |
| 163 TreeScope& scope = node->treeScope(); |
| 164 for (const auto& id : ids) { |
| 165 if (Element* idElement = scope.getElementById(AtomicString(id))) { |
| 166 AXObject* axIdElement = obj.axObjectCache().getOrCreate(idElement); |
| 167 if (axIdElement && !axIdElement->accessibilityIsIgnored()) |
| 168 objects.append(axIdElement); |
| 169 } |
| 170 } |
| 171 |
| 172 attributeMap.addObjectVectorAttribute(m_attribute, objects); |
| 173 } |
| 174 }; |
| 175 |
| 176 using AXSparseAttributeSetterMap = |
| 177 HashMap<QualifiedName, SparseAttributeSetter*>; |
| 178 |
| 179 static AXSparseAttributeSetterMap& getSparseAttributeSetterMap() { |
| 180 // Use a map from attribute name to properties of that attribute. |
| 181 // That way we only need to iterate over the list of attributes once, |
| 182 // rather than calling getAttribute() once for each possible obscure |
| 183 // accessibility attribute. |
| 184 DEFINE_STATIC_LOCAL(AXSparseAttributeSetterMap, axSparseAttributeSetterMap, |
| 185 ()); |
| 186 if (axSparseAttributeSetterMap.isEmpty()) { |
| 187 axSparseAttributeSetterMap.set( |
| 188 aria_activedescendantAttr, |
| 189 new ObjectAttributeSetter(AXObjectAttribute::AriaActiveDescendant)); |
| 190 axSparseAttributeSetterMap.set( |
| 191 aria_controlsAttr, |
| 192 new ObjectVectorAttributeSetter(AXObjectVectorAttribute::AriaControls)); |
| 193 axSparseAttributeSetterMap.set( |
| 194 aria_flowtoAttr, |
| 195 new ObjectVectorAttributeSetter(AXObjectVectorAttribute::AriaFlowTo)); |
| 196 } |
| 197 return axSparseAttributeSetterMap; |
| 198 } |
| 199 |
73 AXNodeObject::AXNodeObject(Node* node, AXObjectCacheImpl& axObjectCache) | 200 AXNodeObject::AXNodeObject(Node* node, AXObjectCacheImpl& axObjectCache) |
74 : AXObject(axObjectCache), | 201 : AXObject(axObjectCache), |
75 m_ariaRole(UnknownRole), | 202 m_ariaRole(UnknownRole), |
76 m_childrenDirty(false), | 203 m_childrenDirty(false), |
77 #if ENABLE(ASSERT) | 204 #if ENABLE(ASSERT) |
78 m_initialized(false), | 205 m_initialized(false), |
79 #endif | 206 #endif |
80 m_node(node) { | 207 m_node(node) { |
81 } | 208 } |
82 | 209 |
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746 m_initialized = true; | 873 m_initialized = true; |
747 #endif | 874 #endif |
748 m_role = determineAccessibilityRole(); | 875 m_role = determineAccessibilityRole(); |
749 } | 876 } |
750 | 877 |
751 void AXNodeObject::detach() { | 878 void AXNodeObject::detach() { |
752 AXObject::detach(); | 879 AXObject::detach(); |
753 m_node = nullptr; | 880 m_node = nullptr; |
754 } | 881 } |
755 | 882 |
| 883 void AXNodeObject::getSparseAXAttributes( |
| 884 AXSparseAttributeClient& sparseAttributeClient) const { |
| 885 Node* node = this->getNode(); |
| 886 if (!node || !node->isElementNode()) |
| 887 return; |
| 888 |
| 889 AXSparseAttributeSetterMap& axSparseAttributeSetterMap = |
| 890 getSparseAttributeSetterMap(); |
| 891 AttributeCollection attributes = toElement(node)->attributesWithoutUpdate(); |
| 892 for (const Attribute& attr : attributes) { |
| 893 SparseAttributeSetter* setter = axSparseAttributeSetterMap.get(attr.name()); |
| 894 if (setter) |
| 895 setter->run(*this, sparseAttributeClient, attr.value()); |
| 896 } |
| 897 } |
| 898 |
756 bool AXNodeObject::isAnchor() const { | 899 bool AXNodeObject::isAnchor() const { |
757 return !isNativeImage() && isLink(); | 900 return !isNativeImage() && isLink(); |
758 } | 901 } |
759 | 902 |
760 bool AXNodeObject::isControl() const { | 903 bool AXNodeObject::isControl() const { |
761 Node* node = this->getNode(); | 904 Node* node = this->getNode(); |
762 if (!node) | 905 if (!node) |
763 return false; | 906 return false; |
764 | 907 |
765 return ((node->isElementNode() && toElement(node)->isFormControlElement()) || | 908 return ((node->isElementNode() && toElement(node)->isFormControlElement()) || |
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2895 return String(); | 3038 return String(); |
2896 return toTextControlElement(node)->strippedPlaceholder(); | 3039 return toTextControlElement(node)->strippedPlaceholder(); |
2897 } | 3040 } |
2898 | 3041 |
2899 DEFINE_TRACE(AXNodeObject) { | 3042 DEFINE_TRACE(AXNodeObject) { |
2900 visitor->trace(m_node); | 3043 visitor->trace(m_node); |
2901 AXObject::trace(visitor); | 3044 AXObject::trace(visitor); |
2902 } | 3045 } |
2903 | 3046 |
2904 } // namespace blink | 3047 } // namespace blink |
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