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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/202063">202063</a></dd>
<dt>Author</dt> <dd>d_russell@apple.com</dd>
<dt>Date</dt> <dd>2016-06-14 14:28:37 -0700 (Tue, 14 Jun 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>AX: Form label text should be exposed as static text if it contains only static text
https://bugs.webkit.org/show_bug.cgi?id=158634

Reviewed by Chris Fleizach.

Use AccessibilityLabel to represent HTMLLabelElement to assistive technology.
AccessibilityLabel::containsOnlyStaticText() searches label subtree to evaluate
if all children are static text.
AccessibilityLabel::stringValue() consults containsOnlyStaticText() and returns
textUnderElement() if true.
WebAccessibilityObjectWrapperMac consults containsOnlyStaticText() and substitutes
StaticTextRole for LabelRole if true.
Cache containsOnlyStaticText() in the common case when updating children.

Source/WebCore:

Tests: accessibility/mac/label-element-all-text-string-value.html
       accessibility/mac/label-element-with-link-string-value.html

* CMakeLists.txt:
* WebCore.xcodeproj/project.pbxproj:
* accessibility/AXObjectCache.cpp:
(WebCore::createFromRenderer):
* accessibility/AccessibilityAllInOne.cpp:
* accessibility/AccessibilityLabel.cpp: Added.
(WebCore::AccessibilityLabel::AccessibilityLabel):
(WebCore::AccessibilityLabel::~AccessibilityLabel):
(WebCore::AccessibilityLabel::create):
(WebCore::AccessibilityLabel::computeAccessibilityIsIgnored):
(WebCore::AccessibilityLabel::stringValue):
(WebCore::childrenContainOnlyStaticText):
(WebCore::AccessibilityLabel::containsOnlyStaticText):
(WebCore::AccessibilityLabel::updateChildrenIfNecessary):
(WebCore::AccessibilityLabel::clearChildren):
(WebCore::AccessibilityLabel::insertChild):
* accessibility/AccessibilityLabel.h: Added.
* accessibility/AccessibilityObject.h:
(WebCore::AccessibilityObject::isLabel):
* accessibility/mac/WebAccessibilityObjectWrapperMac.mm:
(-[WebAccessibilityObjectWrapper role]):

LayoutTests:

* accessibility/aria-labelledby-overrides-label-expected.txt:
* accessibility/mac/label-element-all-text-string-value-expected.txt: Added.
* accessibility/mac/label-element-all-text-string-value.html: Added.
* accessibility/mac/label-element-with-hidden-control-expected.txt:
* accessibility/mac/label-element-with-hidden-control.html:
* accessibility/mac/label-element-with-link-string-value-expected.txt: Added.
* accessibility/mac/label-element-with-link-string-value.html: Added.
* accessibility/mac/slider-allows-title-ui-element-expected.txt:
* accessibility/mac/slider-allows-title-ui-element.html:</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsaccessibilityarialabelledbyoverrideslabelexpectedtxt">trunk/LayoutTests/accessibility/aria-labelledby-overrides-label-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementwithhiddencontrolexpectedtxt">trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementwithhiddencontrolhtml">trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control.html</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymacsliderallowstitleuielementexpectedtxt">trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymacsliderallowstitleuielementhtml">trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element.html</a></li>
<li><a href="#trunkSourceWebCoreCMakeListstxt">trunk/Source/WebCore/CMakeLists.txt</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreWebCorexcodeprojprojectpbxproj">trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityAXObjectCachecpp">trunk/Source/WebCore/accessibility/AXObjectCache.cpp</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityAccessibilityAllInOnecpp">trunk/Source/WebCore/accessibility/AccessibilityAllInOne.cpp</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityAccessibilityObjecth">trunk/Source/WebCore/accessibility/AccessibilityObject.h</a></li>
<li><a href="#trunkSourceWebCoreaccessibilitymacWebAccessibilityObjectWrapperMacmm">trunk/Source/WebCore/accessibility/mac/WebAccessibilityObjectWrapperMac.mm</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementalltextstringvalueexpectedtxt">trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementalltextstringvaluehtml">trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value.html</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementchangingchildrenstringvalueexpectedtxt">trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementchangingchildrenstringvaluehtml">trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value.html</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementchangingtextcontentstringvalueexpectedtxt">trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementchangingtextcontentstringvaluehtml">trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value.html</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementwithlinkstringvalueexpectedtxt">trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value-expected.txt</a></li>
<li><a href="#trunkLayoutTestsaccessibilitymaclabelelementwithlinkstringvaluehtml">trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value.html</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityAccessibilityLabelcpp">trunk/Source/WebCore/accessibility/AccessibilityLabel.cpp</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityAccessibilityLabelh">trunk/Source/WebCore/accessibility/AccessibilityLabel.h</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/LayoutTests/ChangeLog        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -1,3 +1,29 @@
</span><ins>+2016-06-14  Doug Russell  &lt;d_russell@apple.com&gt;
+
+        AX: Form label text should be exposed as static text if it contains only static text
+        https://bugs.webkit.org/show_bug.cgi?id=158634
+
+        Reviewed by Chris Fleizach.
+
+        Use AccessibilityLabel to represent HTMLLabelElement to assistive technology.
+        AccessibilityLabel::containsOnlyStaticText() searches label subtree to evaluate 
+        if all children are static text.
+        AccessibilityLabel::stringValue() consults containsOnlyStaticText() and returns
+        textUnderElement() if true.
+        WebAccessibilityObjectWrapperMac consults containsOnlyStaticText() and substitutes
+        StaticTextRole for LabelRole if true.
+        Cache containsOnlyStaticText() in the common case when updating children.
+
+        * accessibility/aria-labelledby-overrides-label-expected.txt:
+        * accessibility/mac/label-element-all-text-string-value-expected.txt: Added.
+        * accessibility/mac/label-element-all-text-string-value.html: Added.
+        * accessibility/mac/label-element-with-hidden-control-expected.txt:
+        * accessibility/mac/label-element-with-hidden-control.html:
+        * accessibility/mac/label-element-with-link-string-value-expected.txt: Added.
+        * accessibility/mac/label-element-with-link-string-value.html: Added.
+        * accessibility/mac/slider-allows-title-ui-element-expected.txt:
+        * accessibility/mac/slider-allows-title-ui-element.html:
+
</ins><span class="cx"> 2016-06-14  Ryan Haddad  &lt;ryanhaddad@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Increase timeouts for userscripts/window-onerror-for-isolated-world-3.html to fix flakiness.
</span></span></pre></div>
<a id="trunkLayoutTestsaccessibilityarialabelledbyoverrideslabelexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/accessibility/aria-labelledby-overrides-label-expected.txt (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/aria-labelledby-overrides-label-expected.txt        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/LayoutTests/accessibility/aria-labelledby-overrides-label-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -5,7 +5,7 @@
</span><span class="cx"> 
</span><span class="cx"> PASS platformValueForW3CName(text) is &quot;Shut down computer after 10 minutes&quot;
</span><span class="cx"> PASS text.titleUIElement() != null &amp;&amp; text.titleUIElement().isValid is false
</span><del>-Label element role is: AXRole: AXGroup
</del><ins>+Label element role is: AXRole: AXStaticText
</ins><span class="cx"> PASS successfullyParsed is true
</span><span class="cx"> 
</span><span class="cx"> TEST COMPLETE
</span></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementalltextstringvalueexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value-expected.txt (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value-expected.txt                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,12 @@
</span><ins>+ first choice
+This tests that if a label element contains text children it's AXValue will be their concatenated AXValues.
+
+On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
+
+
+PASS label.role is 'AXRole: AXStaticText'
+PASS label.stringValue is 'AXValue: first choice'
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementalltextstringvaluehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value.html (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value.html                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-all-text-string-value.html        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,38 @@
</span><ins>+&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML//EN&quot;&gt;
+&lt;html&gt;
+&lt;head&gt;
+&lt;script src=&quot;../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+&lt;/head&gt;
+&lt;body id=&quot;body&quot;&gt;
+
+&lt;input type=&quot;radio&quot; id=&quot;input&quot; /&gt;
+&lt;label for=&quot;input&quot; id=&quot;label&quot;&gt;
+    &lt;span&gt;first&lt;/span&gt;
+    &lt;span&gt;choice&lt;/span&gt;
+&lt;/label&gt;
+
+&lt;p id=&quot;description&quot;&gt;&lt;/p&gt;
+&lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+
+&lt;script&gt;
+
+    var label = 0;
+
+    description(&quot;This tests that if a label element contains text children it's AXValue will be their concatenated AXValues.&quot;);
+    if (window.accessibilityController) {
+
+        if (window.accessibilityController) {
+
+            var body = document.getElementById(&quot;body&quot;);
+            body.focus();
+            
+            label = accessibilityController.accessibleElementById(&quot;label&quot;);
+            shouldBe(&quot;label.role&quot;, &quot;'AXRole: AXStaticText'&quot;);
+            shouldBe(&quot;label.stringValue&quot;, &quot;'AXValue: first choice'&quot;);          
+        }
+    }
+&lt;/script&gt;
+
+&lt;script src=&quot;../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+&lt;/body&gt;
+&lt;/html&gt;
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementchangingchildrenstringvalueexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value-expected.txt (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value-expected.txt                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,13 @@
</span><ins>+ firstfoo choice
+This tests that if a label element's children change, the string value updates
+
+On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
+
+
+PASS label.role is 'AXRole: AXStaticText'
+PASS initialStringValue is 'AXValue: first choice'
+PASS mutatedStringValue is 'AXValue: first foo choice'
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementchangingchildrenstringvaluehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value.html (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value.html                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-changing-children-string-value.html        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,49 @@
</span><ins>+&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML//EN&quot;&gt;
+&lt;html&gt;
+&lt;head&gt;
+&lt;script src=&quot;../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+&lt;/head&gt;
+&lt;body id=&quot;body&quot;&gt;
+
+&lt;input type=&quot;radio&quot; id=&quot;input&quot; /&gt;
+&lt;label for=&quot;input&quot; id=&quot;label&quot;&gt;
+    &lt;span id=&quot;first&quot;&gt;first&lt;/span&gt;
+    &lt;span&gt;choice&lt;/span&gt;
+&lt;/label&gt;
+
+&lt;p id=&quot;description&quot;&gt;&lt;/p&gt;
+&lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+
+&lt;script&gt;
+
+    var label = 0;
+    var initialStringValue = 0;
+    var mutatedStringValue = 0;
+
+    description(&quot;This tests that if a label element's children change, the string value updates&quot;);
+    if (window.accessibilityController) {
+
+        if (window.accessibilityController) {
+
+            var body = document.getElementById(&quot;body&quot;);
+            body.focus();
+            
+            label = accessibilityController.accessibleElementById(&quot;label&quot;);
+            initialStringValue = label.stringValue;
+            var first = document.getElementById(&quot;first&quot;)
+            var element = document.createElement(&quot;span&quot;);
+            var foo = document.createTextNode(&quot;foo&quot;);
+            element.appendChild(foo);
+            first.appendChild(foo);
+            mutatedStringValue = label.stringValue;
+
+            shouldBe(&quot;label.role&quot;, &quot;'AXRole: AXStaticText'&quot;);
+            shouldBe(&quot;initialStringValue&quot;, &quot;'AXValue: first choice'&quot;);
+            shouldBe(&quot;mutatedStringValue&quot;, &quot;'AXValue: first foo choice'&quot;);
+        }
+    }
+&lt;/script&gt;
+
+&lt;script src=&quot;../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+&lt;/body&gt;
+&lt;/html&gt;
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementchangingtextcontentstringvalueexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value-expected.txt (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value-expected.txt                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,13 @@
</span><ins>+ second choice
+This tests that if a label element's children's textContent changes, the string value updates
+
+On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
+
+
+PASS label.role is 'AXRole: AXStaticText'
+PASS initialStringValue is 'AXValue: first choice'
+PASS mutatedStringValue is 'AXValue: second choice'
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementchangingtextcontentstringvaluehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value.html (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value.html                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-changing-textcontent-string-value.html        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,46 @@
</span><ins>+&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML//EN&quot;&gt;
+&lt;html&gt;
+&lt;head&gt;
+&lt;script src=&quot;../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+&lt;/head&gt;
+&lt;body id=&quot;body&quot;&gt;
+
+&lt;input type=&quot;radio&quot; id=&quot;input&quot; /&gt;
+&lt;label for=&quot;input&quot; id=&quot;label&quot;&gt;
+    &lt;span id=&quot;first&quot;&gt;first&lt;/span&gt;
+    &lt;span&gt;choice&lt;/span&gt;
+&lt;/label&gt;
+
+&lt;p id=&quot;description&quot;&gt;&lt;/p&gt;
+&lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+
+&lt;script&gt;
+
+    var label = 0;
+    var initialStringValue = 0;
+    var mutatedStringValue = 0;
+
+    description(&quot;This tests that if a label element's children's textContent changes, the string value updates&quot;);
+    if (window.accessibilityController) {
+
+        if (window.accessibilityController) {
+
+            var body = document.getElementById(&quot;body&quot;);
+            body.focus();
+            
+            label = accessibilityController.accessibleElementById(&quot;label&quot;);
+            initialStringValue = label.stringValue;
+            var first = document.getElementById(&quot;first&quot;)
+            first.textContent = &quot;second&quot;;
+            mutatedStringValue = label.stringValue;
+
+            shouldBe(&quot;label.role&quot;, &quot;'AXRole: AXStaticText'&quot;);
+            shouldBe(&quot;initialStringValue&quot;, &quot;'AXValue: first choice'&quot;);
+            shouldBe(&quot;mutatedStringValue&quot;, &quot;'AXValue: second choice'&quot;);
+        }
+    }
+&lt;/script&gt;
+
+&lt;script src=&quot;../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+&lt;/body&gt;
+&lt;/html&gt;
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementwithhiddencontrolexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control-expected.txt (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control-expected.txt        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -4,7 +4,7 @@
</span><span class="cx"> On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
</span><span class="cx"> 
</span><span class="cx"> 
</span><del>-PASS container.childAtIndex('0').role is 'AXRole: AXGroup'
</del><ins>+PASS container.childAtIndex('0').role is 'AXRole: AXStaticText'
</ins><span class="cx"> PASS container.childAtIndex('0').childAtIndex(0).role is 'AXRole: AXStaticText'
</span><span class="cx"> PASS container.childAtIndex('0').childAtIndex(0).stringValue is 'AXValue: Test label1'
</span><span class="cx"> PASS container.childAtIndex('2').role is 'AXRole: AXCheckBox'
</span></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementwithhiddencontrolhtml"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control.html (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control.html        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/LayoutTests/accessibility/mac/label-element-with-hidden-control.html        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -21,7 +21,7 @@
</span><span class="cx">             var body = document.getElementById(&quot;body&quot;);
</span><span class="cx">             body.focus();
</span><span class="cx">             var container = accessibilityController.focusedElement.childAtIndex(0);
</span><del>-            shouldBe(&quot;container.childAtIndex('0').role&quot;, &quot;'AXRole: AXGroup'&quot;);            
</del><ins>+            shouldBe(&quot;container.childAtIndex('0').role&quot;, &quot;'AXRole: AXStaticText'&quot;);            
</ins><span class="cx">             shouldBe(&quot;container.childAtIndex('0').childAtIndex(0).role&quot;, &quot;'AXRole: AXStaticText'&quot;);            
</span><span class="cx">             shouldBe(&quot;container.childAtIndex('0').childAtIndex(0).stringValue&quot;, &quot;'AXValue: Test label1'&quot;);            
</span><span class="cx">             shouldBe(&quot;container.childAtIndex('2').role&quot;, &quot;'AXRole: AXCheckBox'&quot;);
</span></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementwithlinkstringvalueexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value-expected.txt (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value-expected.txt                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,12 @@
</span><ins>+ first choice
+This tests that if a label element contains a link it will be exposed as a group with no AXValue.
+
+On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
+
+
+PASS label.role is 'AXRole: AXGroup'
+PASS label.stringValue is 'AXValue: '
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymaclabelelementwithlinkstringvaluehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value.html (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value.html                                (rev 0)
+++ trunk/LayoutTests/accessibility/mac/label-element-with-link-string-value.html        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,38 @@
</span><ins>+&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML//EN&quot;&gt;
+&lt;html&gt;
+&lt;head&gt;
+&lt;script src=&quot;../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+&lt;/head&gt;
+&lt;body id=&quot;body&quot;&gt;
+
+&lt;input type=&quot;radio&quot; id=&quot;input&quot; /&gt;
+&lt;label for=&quot;input&quot; id=&quot;label&quot;&gt;
+        &lt;span&gt;first&lt;/span&gt;
+        &lt;span&gt;&lt;a href=&quot;&quot;&gt;choice&lt;/a&gt;&lt;/span&gt;
+&lt;/label&gt;
+
+&lt;p id=&quot;description&quot;&gt;&lt;/p&gt;
+&lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+
+&lt;script&gt;
+
+        var label = 0;
+
+    description(&quot;This tests that if a label element contains a link it will be exposed as a group with no AXValue.&quot;);
+    if (window.accessibilityController) {
+
+        if (window.accessibilityController) {
+
+            var body = document.getElementById(&quot;body&quot;);
+            body.focus();
+            
+            label = accessibilityController.accessibleElementById(&quot;label&quot;);
+            shouldBe(&quot;label.role&quot;, &quot;'AXRole: AXGroup'&quot;);
+            shouldBe(&quot;label.stringValue&quot;, &quot;'AXValue: '&quot;);          
+        }
+    }
+&lt;/script&gt;
+
+&lt;script src=&quot;../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+&lt;/body&gt;
+&lt;/html&gt;
</ins></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymacsliderallowstitleuielementexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element-expected.txt (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element-expected.txt        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element-expected.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -5,7 +5,7 @@
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="cx"> PASS slider.titleUIElement().isEqual(title) is true
</span><del>-PASS title.role is 'AXRole: AXGroup'
</del><ins>+PASS title.role is 'AXRole: AXStaticText'
</ins><span class="cx"> PASS title.childAtIndex(0).role is 'AXRole: AXStaticText'
</span><span class="cx"> PASS successfullyParsed is true
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkLayoutTestsaccessibilitymacsliderallowstitleuielementhtml"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element.html (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element.html        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/LayoutTests/accessibility/mac/slider-allows-title-ui-element.html        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -24,7 +24,7 @@
</span><span class="cx">         var title = accessibilityController.rootElement.childAtIndex(0).childAtIndex(0).childAtIndex(0);
</span><span class="cx"> 
</span><span class="cx">         shouldBeTrue(&quot;slider.titleUIElement().isEqual(title)&quot;);
</span><del>-        shouldBe(&quot;title.role&quot;, &quot;'AXRole: AXGroup'&quot;);
</del><ins>+        shouldBe(&quot;title.role&quot;, &quot;'AXRole: AXStaticText'&quot;);
</ins><span class="cx">         shouldBe(&quot;title.childAtIndex(0).role&quot;, &quot;'AXRole: AXStaticText'&quot;);
</span><span class="cx">     }
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCoreCMakeListstxt"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/CMakeLists.txt (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/CMakeLists.txt        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/CMakeLists.txt        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -1050,6 +1050,7 @@
</span><span class="cx">     accessibility/AccessibilityARIAGridRow.cpp
</span><span class="cx">     accessibility/AccessibilityAttachment.cpp
</span><span class="cx">     accessibility/AccessibilityImageMapLink.cpp
</span><ins>+    accessibility/AccessibilityLabel.cpp
</ins><span class="cx">     accessibility/AccessibilityList.cpp
</span><span class="cx">     accessibility/AccessibilityListBox.cpp
</span><span class="cx">     accessibility/AccessibilityListBoxOption.cpp
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/ChangeLog        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -1,3 +1,44 @@
</span><ins>+2016-06-14  Doug Russell  &lt;d_russell@apple.com&gt;
+
+        AX: Form label text should be exposed as static text if it contains only static text
+        https://bugs.webkit.org/show_bug.cgi?id=158634
+
+        Reviewed by Chris Fleizach.
+
+        Use AccessibilityLabel to represent HTMLLabelElement to assistive technology.
+        AccessibilityLabel::containsOnlyStaticText() searches label subtree to evaluate 
+        if all children are static text.
+        AccessibilityLabel::stringValue() consults containsOnlyStaticText() and returns
+        textUnderElement() if true.
+        WebAccessibilityObjectWrapperMac consults containsOnlyStaticText() and substitutes
+        StaticTextRole for LabelRole if true.
+        Cache containsOnlyStaticText() in the common case when updating children.
+
+        Tests: accessibility/mac/label-element-all-text-string-value.html
+               accessibility/mac/label-element-with-link-string-value.html
+
+        * CMakeLists.txt:
+        * WebCore.xcodeproj/project.pbxproj:
+        * accessibility/AXObjectCache.cpp:
+        (WebCore::createFromRenderer):
+        * accessibility/AccessibilityAllInOne.cpp:
+        * accessibility/AccessibilityLabel.cpp: Added.
+        (WebCore::AccessibilityLabel::AccessibilityLabel):
+        (WebCore::AccessibilityLabel::~AccessibilityLabel):
+        (WebCore::AccessibilityLabel::create):
+        (WebCore::AccessibilityLabel::computeAccessibilityIsIgnored):
+        (WebCore::AccessibilityLabel::stringValue):
+        (WebCore::childrenContainOnlyStaticText):
+        (WebCore::AccessibilityLabel::containsOnlyStaticText):
+        (WebCore::AccessibilityLabel::updateChildrenIfNecessary):
+        (WebCore::AccessibilityLabel::clearChildren):
+        (WebCore::AccessibilityLabel::insertChild):
+        * accessibility/AccessibilityLabel.h: Added.
+        * accessibility/AccessibilityObject.h:
+        (WebCore::AccessibilityObject::isLabel):
+        * accessibility/mac/WebAccessibilityObjectWrapperMac.mm:
+        (-[WebAccessibilityObjectWrapper role]):
+
</ins><span class="cx"> 2016-06-14  Commit Queue  &lt;commit-queue@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         Unreviewed, rolling out r202057.
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCorexcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -6775,6 +6775,7 @@
</span><span class="cx">                 F50664F7157F52DC00AC226F /* FormController.cpp in Sources */ = {isa = PBXBuildFile; fileRef = F50664F5157F52DC00AC226F /* FormController.cpp */; };
</span><span class="cx">                 F50664F8157F52DC00AC226F /* FormController.h in Headers */ = {isa = PBXBuildFile; fileRef = F50664F6157F52DC00AC226F /* FormController.h */; };
</span><span class="cx">                 F513A3EA15FF4841001526DB /* ValidationMessageClient.h in Headers */ = {isa = PBXBuildFile; fileRef = F513A3E915FF4841001526DB /* ValidationMessageClient.h */; };
</span><ins>+                F52A8FD71D0A8D0E0073CF42 /* AccessibilityLabel.cpp in Sources */ = {isa = PBXBuildFile; fileRef = F52A8FD51D0A88010073CF42 /* AccessibilityLabel.cpp */; };
</ins><span class="cx">                 F52AD5E41534245F0059FBE6 /* EmptyClients.cpp in Sources */ = {isa = PBXBuildFile; fileRef = F52AD5E31534245F0059FBE6 /* EmptyClients.cpp */; };
</span><span class="cx">                 F544F78815CFB2A800AF33A8 /* PlatformLocale.cpp in Sources */ = {isa = PBXBuildFile; fileRef = F544F78615CFB2A800AF33A8 /* PlatformLocale.cpp */; };
</span><span class="cx">                 F544F78915CFB2A800AF33A8 /* PlatformLocale.h in Headers */ = {isa = PBXBuildFile; fileRef = F544F78715CFB2A800AF33A8 /* PlatformLocale.h */; };
</span><span class="lines">@@ -14871,6 +14872,8 @@
</span><span class="cx">                 F523D27902DE43D7018635CA /* TextResourceDecoder.h */ = {isa = PBXFileReference; fileEncoding = 30; indentWidth = 4; lastKnownFileType = sourcecode.c.h; path = TextResourceDecoder.h; sourceTree = &quot;&lt;group&gt;&quot;; tabWidth = 8; usesTabs = 0; };
</span><span class="cx">                 F523D30302DE4476018635CA /* Range.cpp */ = {isa = PBXFileReference; fileEncoding = 30; indentWidth = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Range.cpp; sourceTree = &quot;&lt;group&gt;&quot;; tabWidth = 8; usesTabs = 0; };
</span><span class="cx">                 F523D30402DE4476018635CA /* Range.h */ = {isa = PBXFileReference; fileEncoding = 30; indentWidth = 4; lastKnownFileType = sourcecode.c.h; path = Range.h; sourceTree = &quot;&lt;group&gt;&quot;; tabWidth = 8; usesTabs = 0; };
</span><ins>+                F52A8FD51D0A88010073CF42 /* AccessibilityLabel.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = AccessibilityLabel.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
+                F52A8FD61D0A88010073CF42 /* AccessibilityLabel.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AccessibilityLabel.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</ins><span class="cx">                 F52AD5E31534245F0059FBE6 /* EmptyClients.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = EmptyClients.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 F544F78615CFB2A800AF33A8 /* PlatformLocale.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = PlatformLocale.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 F544F78715CFB2A800AF33A8 /* PlatformLocale.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PlatformLocale.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="lines">@@ -16520,6 +16523,8 @@
</span><span class="cx">                                 2914E3061CAB5A440049966F /* AccessibilityAttachment.h */,
</span><span class="cx">                                 2981CAA0131822EC00D12F2A /* AccessibilityImageMapLink.cpp */,
</span><span class="cx">                                 29A8121D0FBB9C1D00510293 /* AccessibilityImageMapLink.h */,
</span><ins>+                                F52A8FD51D0A88010073CF42 /* AccessibilityLabel.cpp */,
+                                F52A8FD61D0A88010073CF42 /* AccessibilityLabel.h */,
</ins><span class="cx">                                 2981CAA1131822EC00D12F2A /* AccessibilityList.cpp */,
</span><span class="cx">                                 29A8120E0FBB9C1D00510293 /* AccessibilityList.h */,
</span><span class="cx">                                 2981CAA2131822EC00D12F2A /* AccessibilityListBox.cpp */,
</span><span class="lines">@@ -29777,6 +29782,7 @@
</span><span class="cx">                                 FE6938B61045D67E008EABB6 /* EventHandlerIOS.mm in Sources */,
</span><span class="cx">                                 93C09A7F0B064EEF005ABD4D /* EventHandlerMac.mm in Sources */,
</span><span class="cx">                                 AD4495F3141FC08900541EDF /* EventListenerMap.cpp in Sources */,
</span><ins>+                                F52A8FD71D0A8D0E0073CF42 /* AccessibilityLabel.cpp in Sources */,
</ins><span class="cx">                                 C400D10918F1C8F60090D863 /* EventLoopInput.cpp in Sources */,
</span><span class="cx">                                 99CC0B5018BE9849006CEBCC /* EventLoopInputDispatcher.cpp in Sources */,
</span><span class="cx">                                 26F40D4A14904A6300CA67C4 /* EventLoopIOS.mm in Sources */,
</span></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityAXObjectCachecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/accessibility/AXObjectCache.cpp (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/AXObjectCache.cpp        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/accessibility/AXObjectCache.cpp        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -37,6 +37,7 @@
</span><span class="cx"> #include &quot;AccessibilityARIAGridRow.h&quot;
</span><span class="cx"> #include &quot;AccessibilityAttachment.h&quot;
</span><span class="cx"> #include &quot;AccessibilityImageMapLink.h&quot;
</span><ins>+#include &quot;AccessibilityLabel.h&quot;
</ins><span class="cx"> #include &quot;AccessibilityList.h&quot;
</span><span class="cx"> #include &quot;AccessibilityListBox.h&quot;
</span><span class="cx"> #include &quot;AccessibilityListBoxOption.h&quot;
</span><span class="lines">@@ -428,6 +429,9 @@
</span><span class="cx">     if (nodeHasRole(node, &quot;treeitem&quot;))
</span><span class="cx">         return AccessibilityTreeItem::create(renderer);
</span><span class="cx"> 
</span><ins>+    if (node &amp;&amp; is&lt;HTMLLabelElement&gt;(node))
+        return AccessibilityLabel::create(renderer);
+
</ins><span class="cx"> #if ENABLE(VIDEO)
</span><span class="cx">     // media controls
</span><span class="cx">     if (node &amp;&amp; node-&gt;isMediaControlElement())
</span></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityAccessibilityAllInOnecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/accessibility/AccessibilityAllInOne.cpp (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/AccessibilityAllInOne.cpp        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/accessibility/AccessibilityAllInOne.cpp        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -31,6 +31,7 @@
</span><span class="cx"> #include &quot;AccessibilityARIAGridRow.cpp&quot;
</span><span class="cx"> #include &quot;AccessibilityAttachment.cpp&quot;
</span><span class="cx"> #include &quot;AccessibilityImageMapLink.cpp&quot;
</span><ins>+#include &quot;AccessibilityLabel.cpp&quot;
</ins><span class="cx"> #include &quot;AccessibilityList.cpp&quot;
</span><span class="cx"> #include &quot;AccessibilityListBox.cpp&quot;
</span><span class="cx"> #include &quot;AccessibilityListBoxOption.cpp&quot;
</span></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityAccessibilityLabelcpp"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/accessibility/AccessibilityLabel.cpp (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/AccessibilityLabel.cpp                                (rev 0)
+++ trunk/Source/WebCore/accessibility/AccessibilityLabel.cpp        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,109 @@
</span><ins>+/*
+ * Copyright (C) 2016 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
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Inc. (&quot;Apple&quot;) nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS &quot;AS IS&quot; AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include &quot;config.h&quot;
+#include &quot;AccessibilityLabel.h&quot;
+
+#include &quot;AXObjectCache.h&quot;
+#include &quot;HTMLNames.h&quot;
+
+namespace WebCore {
+    
+using namespace HTMLNames;
+
+AccessibilityLabel::AccessibilityLabel(RenderObject* renderer)
+    : AccessibilityRenderObject(renderer)
+{
+}
+
+AccessibilityLabel::~AccessibilityLabel()
+{
+}
+
+Ref&lt;AccessibilityLabel&gt; AccessibilityLabel::create(RenderObject* renderer)
+{
+    return adoptRef(*new AccessibilityLabel(renderer));
+}
+
+bool AccessibilityLabel::computeAccessibilityIsIgnored() const
+{
+    return accessibilityIsIgnoredByDefault();
+}
+
+String AccessibilityLabel::stringValue() const
+{
+    if (containsOnlyStaticText())
+        return textUnderElement();
+    return AccessibilityNodeObject::stringValue();
+}
+
+static bool childrenContainOnlyStaticText(const AccessibilityObject::AccessibilityChildrenVector&amp; children)
+{
+    if (!children.size())
+        return false;
+    for (const auto&amp; child : children) {
+        if (child-&gt;roleValue() == StaticTextRole)
+            continue;
+        if (child-&gt;roleValue() == GroupRole) {
+            if (!childrenContainOnlyStaticText(child-&gt;children()))
+                return false;
+        } else
+            return false;
+    }
+    return true;
+}
+
+bool AccessibilityLabel::containsOnlyStaticText() const
+{
+    if (m_containsOnlyStaticTextDirty)
+        return childrenContainOnlyStaticText(m_children);
+    return m_containsOnlyStaticText;
+}
+
+void AccessibilityLabel::updateChildrenIfNecessary()
+{
+    AccessibilityRenderObject::updateChildrenIfNecessary();
+    if (m_containsOnlyStaticTextDirty)
+        m_containsOnlyStaticText = childrenContainOnlyStaticText(m_children);
+    m_containsOnlyStaticTextDirty = false;
+}
+
+void AccessibilityLabel::clearChildren()
+{
+    AccessibilityRenderObject::clearChildren();
+    m_containsOnlyStaticText = false;
+    m_containsOnlyStaticTextDirty = false;
+}
+
+void AccessibilityLabel::insertChild(AccessibilityObject* object, unsigned index)
+{
+    AccessibilityRenderObject::insertChild(object, index);
+    m_containsOnlyStaticTextDirty = true;
+}
+
+} // namespace WebCore
</ins></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityAccessibilityLabelh"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/accessibility/AccessibilityLabel.h (0 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/AccessibilityLabel.h                                (rev 0)
+++ trunk/Source/WebCore/accessibility/AccessibilityLabel.h        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -0,0 +1,60 @@
</span><ins>+/*
+ * Copyright (C) 2016 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
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Inc. (&quot;Apple&quot;) nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS &quot;AS IS&quot; AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef AccessibilityLabel_h
+#define AccessibilityLabel_h
+
+#include &quot;AccessibilityRenderObject.h&quot;
+
+namespace WebCore {
+    
+class AccessibilityLabel final : public AccessibilityRenderObject {
+public:
+    static Ref&lt;AccessibilityLabel&gt; create(RenderObject*);
+    virtual ~AccessibilityLabel();
+    
+    bool containsOnlyStaticText() const;
+
+private:
+    explicit AccessibilityLabel(RenderObject*);
+    bool computeAccessibilityIsIgnored() const final;
+    AccessibilityRole roleValue() const final { return LabelRole; }
+    bool isLabel() const final { return true; }
+    String stringValue() const final;
+    void updateChildrenIfNecessary() final;
+    void clearChildren() final;
+    void insertChild(AccessibilityObject*, unsigned) final;
+    bool m_containsOnlyStaticTextDirty : 1;
+    bool m_containsOnlyStaticText : 1;
+};
+
+} // namespace WebCore
+
+SPECIALIZE_TYPE_TRAITS_ACCESSIBILITY(AccessibilityLabel, isLabel())
+
+#endif // AccessibilityLabel_h
</ins></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityAccessibilityObjecth"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/accessibility/AccessibilityObject.h (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/AccessibilityObject.h        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/accessibility/AccessibilityObject.h        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -512,6 +512,7 @@
</span><span class="cx">     virtual bool isSliderThumb() const { return false; }
</span><span class="cx">     virtual bool isInputSlider() const { return false; }
</span><span class="cx">     virtual bool isControl() const { return false; }
</span><ins>+    virtual bool isLabel() const { return false; }
</ins><span class="cx">     virtual bool isList() const { return false; }
</span><span class="cx">     virtual bool isTable() const { return false; }
</span><span class="cx">     virtual bool isDataTable() const { return false; }
</span></span></pre></div>
<a id="trunkSourceWebCoreaccessibilitymacWebAccessibilityObjectWrapperMacmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/accessibility/mac/WebAccessibilityObjectWrapperMac.mm (202062 => 202063)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/mac/WebAccessibilityObjectWrapperMac.mm        2016-06-14 21:27:19 UTC (rev 202062)
+++ trunk/Source/WebCore/accessibility/mac/WebAccessibilityObjectWrapperMac.mm        2016-06-14 21:28:37 UTC (rev 202063)
</span><span class="lines">@@ -33,6 +33,7 @@
</span><span class="cx"> 
</span><span class="cx"> #import &quot;AXObjectCache.h&quot;
</span><span class="cx"> #import &quot;AccessibilityARIAGridRow.h&quot;
</span><ins>+#import &quot;AccessibilityLabel.h&quot;
</ins><span class="cx"> #import &quot;AccessibilityList.h&quot;
</span><span class="cx"> #import &quot;AccessibilityListBox.h&quot;
</span><span class="cx"> #import &quot;AccessibilityRenderObject.h&quot;
</span><span class="lines">@@ -2232,6 +2233,10 @@
</span><span class="cx">         return [[self attachmentView] accessibilityAttributeValue:NSAccessibilityRoleAttribute];
</span><span class="cx"> #pragma clang diagnostic pop
</span><span class="cx">     AccessibilityRole role = m_object-&gt;roleValue();
</span><ins>+
+    if (role == LabelRole &amp;&amp; is&lt;AccessibilityLabel&gt;(*m_object) &amp;&amp; downcast&lt;AccessibilityLabel&gt;(*m_object).containsOnlyStaticText())
+        role = StaticTextRole;
+
</ins><span class="cx">     if (role == CanvasRole &amp;&amp; m_object-&gt;canvasHasFallbackContent())
</span><span class="cx">         role = GroupRole;
</span><span class="cx">     NSString* string = roleValueToNSString(role);
</span></span></pre>
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