Expose InlineTextBoxes in the accessibility tree.

Source/core/accessibility/AccessibilityRenderObject.cpp

Index: Source/core/accessibility/AccessibilityRenderObject.cpp
diff --git a/Source/core/accessibility/AccessibilityRenderObject.cpp b/Source/core/accessibility/AccessibilityRenderObject.cpp
index 579d3b994f211d7aab6acc431995376b88963c65..42812a7979a2d2e3806dea832774e1738912388f 100644
--- a/Source/core/accessibility/AccessibilityRenderObject.cpp
+++ b/Source/core/accessibility/AccessibilityRenderObject.cpp
@@ -32,6 +32,7 @@
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/accessibility/AXObjectCache.h"
 #include "core/accessibility/AccessibilityImageMapLink.h"
+#include "core/accessibility/AccessibilityInlineTextBox.h"
 #include "core/accessibility/AccessibilitySVGRoot.h"
 #include "core/accessibility/AccessibilitySpinButton.h"
 #include "core/accessibility/AccessibilityTable.h"
@@ -52,6 +53,8 @@
 #include "core/page/Page.h"
 #include "core/platform/LocalizedStrings.h"
 #include "core/rendering/HitTestResult.h"
+#include "core/rendering/InlineTextBox.h"
+#include "core/rendering/RenderFieldset.h"
 #include "core/rendering/RenderFileUploadControl.h"
 #include "core/rendering/RenderHTMLCanvas.h"
 #include "core/rendering/RenderImage.h"
@@ -1466,6 +1469,7 @@ void AccessibilityRenderObject::addChildren()
     addTextFieldChildren();
     addCanvasChildren();
     addRemoteSVGChildren();
+    addInlineTextBoxChildren();
 }
 
 bool AccessibilityRenderObject::canHaveChildren() const
@@ -1732,6 +1736,17 @@ void AccessibilityRenderObject::handleAriaExpandedChanged()
         axObjectCache()->postNotification(this, document(), isExpanded() ? AXObjectCache::AXRowExpanded : AXObjectCache::AXRowCollapsed, true);
 }
 
+void AccessibilityRenderObject::textChanged()
+{
+    if (!m_renderer)
+        return;
+
+    if (AXObjectCache::inlineTextBoxAccessibility() && roleValue() == StaticTextRole)
+        childrenChanged();
+
+    AccessibilityNodeObject::textChanged();
+}
+
 //
 // Text metrics. Most of these should be deprecated, needs major cleanup.
 //
@@ -1799,6 +1814,25 @@ int AccessibilityRenderObject::indexForVisiblePosition(const VisiblePosition& po
     return TextIterator::rangeLength(range.get());
 }
 
+void AccessibilityRenderObject::addInlineTextBoxChildren()
+{
+    if (!axObjectCache()->inlineTextBoxAccessibility())
+        return;
+
+    if (!renderer() || !renderer()->isText())
+        return;
+
+    RenderText* renderText = toRenderText(renderer());
+    if (renderText->needsLayout())
+        renderText->document().updateLayoutIgnorePendingStylesheets();
+
+    for (InlineTextBox* box = renderText->firstTextBox(); box; box = box->nextTextBox()) {
+        AccessibilityObject* axObject = axObjectCache()->getOrCreate(box);
+        if (!axObject->accessibilityIsIgnored())
+            m_children.append(axObject);
+    }
+}
+
 void AccessibilityRenderObject::lineBreaks(Vector<int>& lineBreaks) const
 {
     if (!isTextControl())