Use correct offset when attribute auto is present

Source/core/dom/Position.cpp

Index: Source/core/dom/Position.cpp
diff --git a/Source/core/dom/Position.cpp b/Source/core/dom/Position.cpp
index dacff4069ead02e8d5f39e0d2d15bf0d9294ea25..654a3f8db87f6c604f99fc714b710b6f4a183b7e 100644
--- a/Source/core/dom/Position.cpp
+++ b/Source/core/dom/Position.cpp
@@ -79,6 +79,15 @@ static Node* previousRenderedEditable(Node* node)
     return 0;
 }
 
+static bool isTextDirectionHasAutoAttribute(Node *node)

[Inactive, 2014/06/02 15:15:08]

nit: star on wrong side.
nit: "isTextDirectionHasAutoAttribute" does not sound correct. We should
probably find a better name?

[Habib Virji, 2014/06/02 15:23:52]

Done.

+{
+    bool isAuto = node->selfOrAncestorHasDirAutoAttribute();
+    if (node->isInShadowTree()) {

[Inactive, 2014/06/02 15:15:08]

nit: No need for curly brackets.

[Habib Virji, 2014/06/02 15:23:52]

Done.

+        isAuto = equalIgnoringCase(node->shadowHost()->fastGetAttribute(dirAttr), "auto");
+    }
+    return isAuto;
+}
+
 Position::Position(PassRefPtrWillBeRawPtr<Node> anchorNode, LegacyEditingOffset offset)
     : m_anchorNode(anchorNode)
     , m_offset(offset.value())
@@ -1260,7 +1269,10 @@ void Position::getInlineBoxAndOffset(EAffinity affinity, TextDirection primaryDi
                     break;
                 inlineBox = prevBox;
             }
-            caretOffset = inlineBox->caretLeftmostOffset();
+            if (isTextDirectionHasAutoAttribute(m_anchorNode.get()))
+                caretOffset = (inlineBox->bidiLevel() < level) ? inlineBox->caretLeftmostOffset() : inlineBox->caretRightmostOffset();
+            else
+                caretOffset = inlineBox->caretLeftmostOffset();
         } else if (nextBox->bidiLevel() > level) {
             // Left edge of a "tertiary" run. Set to the right edge of that run.
             while (InlineBox* tertiaryBox = inlineBox->nextLeafChildIgnoringLineBreak()) {