ARIA 1.1: implementation for aria-col-* and aria-row-*.

third_party/WebKit/Source/modules/accessibility/AXTableRow.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXTableRow.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXTableRow.cpp b/third_party/WebKit/Source/modules/accessibility/AXTableRow.cpp
index 48a180ea9f5bf0ebf6b15414443ca24dc5598ba0..72778a7ecf075c56b6654e855cc5bec89da15d01 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXTableRow.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXTableRow.cpp
@@ -47,6 +47,23 @@ AXTableRow* AXTableRow::create(LayoutObject* layoutObject,
   return new AXTableRow(layoutObject, axObjectCache);
 }
 
+void AXTableRow::addChildren() {
+  AXLayoutObject::addChildren();
+
+  // A row is allowed to have a column index that's then applied to all

[aboxhall, 2016/12/02 17:39:26]

nit: this explanation may give the impression that all columns will share the
same column index value. Perhaps reword as something like "A row may have an
aria-colindex value indicating the index of the first visible column in a
contiguous block."

[dmazzoni, 2016/12/14 17:41:03]

Done.

+  // cells within that row, if they're all contiguous.
+  int colIndex = ariaColumnIndex();
+  if (!colIndex)
+    return;
+
+  unsigned index = 0;
+  for (const auto& cell : children()) {
+    if (cell->isTableCell())
+      toAXTableCell(cell.get())->setARIAColIndexFromRow(colIndex + index);
+    index++;
+  }
+}
+
 AccessibilityRole AXTableRow::determineAccessibilityRole() {
   if (!isTableRow())
     return AXLayoutObject::determineAccessibilityRole();
@@ -96,6 +113,22 @@ AXObject* AXTableRow::headerObject() {
   return headers[0].get();
 }
 
+unsigned AXTableRow::ariaColumnIndex() const {
+  const AtomicString& colIndexValue = getAttribute(aria_colindexAttr);
+  if (colIndexValue.toInt() >= 1)
+    return colIndexValue.toInt();
+
+  return 0;
+}
+
+unsigned AXTableRow::ariaRowIndex() const {
+  const AtomicString& rowIndexValue = getAttribute(aria_rowindexAttr);
+  if (rowIndexValue.toInt() >= 1)
+    return rowIndexValue.toInt();
+
+  return 0;
+}
+
 void AXTableRow::headerObjectsForRow(AXObjectVector& headers) {
   if (!m_layoutObject || !m_layoutObject->isTableRow())
     return;