Expose InlineTextBoxes in the accessibility tree.

Source/core/rendering/RenderText.cpp

Index: Source/core/rendering/RenderText.cpp
diff --git a/Source/core/rendering/RenderText.cpp b/Source/core/rendering/RenderText.cpp
index 2ea7e66ff84fd0cf3010362f7004870c16d9cb8e..ab7ceb954a3f3cc69e13c780eee41924446adf5c 100644
--- a/Source/core/rendering/RenderText.cpp
+++ b/Source/core/rendering/RenderText.cpp
@@ -1863,4 +1863,70 @@ void RenderText::momentarilyRevealLastTypedCharacter(unsigned lastTypedCharacter
     secureTextTimer->restartWithNewText(lastTypedCharacterOffset);
 }
 
+RenderText::AbstractInlineTextBox* RenderText::firstInlineTextBox() const
+{
+    return m_firstTextBox;
+}
+
+RenderText::AbstractInlineTextBox* RenderText::nextInlineTextBox(RenderText::AbstractInlineTextBox* inlineTextBox) const
+{
+    return inlineTextBox->nextTextBox();
+}
+
+LayoutRect RenderText::inlineTextBoxBounds(RenderText::AbstractInlineTextBox* inlineTextBox) const
+{
+    FloatRect boundaries = inlineTextBox->calculateBoundaries();
+    return localToAbsoluteQuad(boundaries).enclosingBoundingBox();
+}
+
+unsigned RenderText::inlineTextBoxStart(RenderText::AbstractInlineTextBox* inlineTextBox) const
+{
+    return inlineTextBox->start();
+}
+
+unsigned RenderText::inlineTextBoxLen(RenderText::AbstractInlineTextBox* inlineTextBox) const
+{
+    return inlineTextBox->len();
+}
+
+RenderText::AbstractInlineTextBoxDirection RenderText::inlineTextBoxDirection(RenderText::AbstractInlineTextBox* inlineTextBox) const
+{
+    if (style()->isHorizontalWritingMode())
+        return (inlineTextBox->direction() == RTL ? AbstractInlineTextBoxDirectionRL : AbstractInlineTextBoxDirectionLR);
+    return (inlineTextBox->direction() == RTL ? AbstractInlineTextBoxDirectionBT : AbstractInlineTextBoxDirectionTB);
+}
+
+void RenderText::inlineTextBoxCharacterWidths(RenderText::AbstractInlineTextBox* inlineTextBox, Vector<float>& widths) const
+{
+    inlineTextBox->characterWidths(widths);
+}
+
+void RenderText::inlineTextBoxWordBoundaries(RenderText::AbstractInlineTextBox* inlineTextBox, Vector<WordBoundaries>& words) const
+{
+    int start = inlineTextBox->start();
+    int len = inlineTextBox->len();
+    TextBreakIterator* iterator = wordBreakIterator(text(), start, len);
+    int pos = textBreakFirst(iterator);
+    while (pos >= 0 && pos < len) {
+        int next = textBreakNext(iterator);
+        if (isWordTextBreak(iterator))
+            words.append(WordBoundaries(pos, next));
+        pos = next;
+    }
+}
+
+String RenderText::inlineTextBoxText(RenderText::AbstractInlineTextBox* inlineTextBox) const
+{
+    unsigned start = inlineTextBox->start();
+    unsigned len = inlineTextBox->len();
+    if (Node* node = this->node()) {
+        RefPtr<Range> range = Range::create(node->document());
+        range->setStart(node, start, IGNORE_EXCEPTION);
+        range->setEnd(node, start + len, IGNORE_EXCEPTION);
+        return plainText(range.get(), TextIteratorIgnoresStyleVisibility);
+    }
+
+    return text().substring(start, len);
+}
+
 } // namespace WebCore