From 99785358222f9d87353332f8fac92244f988bd9f Mon Sep 17 00:00:00 2001
From: Rafael Weinstein <rafaelw@chromium.org>
Date: Tue, 24 Sep 2013 19:36:56 -0700
Subject: [PATCH] getAssociatedRadioButtons needs to check within the TreeScope

https://github.com/Polymer/polymer/issues/291

R=arv

Review URL: https://codereview.appspot.com/13889043
---
 src/NodeBind.js | 15 ++++++++++++---
 tests/tests.js  | 28 +++++++++++++++++++++++++---
 2 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/src/NodeBind.js b/src/NodeBind.js
index 88b021c..1729f20 100644
--- a/src/NodeBind.js
+++ b/src/NodeBind.js
@@ -17,6 +17,14 @@
 
   var filter = Array.prototype.filter.call.bind(Array.prototype.filter);
 
+  function getTreeScope(node) {
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+
+    return typeof node.getElementById === 'function' ? node : null;
+  }
+
   // JScript does not have __proto__. We wrap all object literals with
   // createObject which uses Object.create, Object.defineProperty and
   // Object.getOwnPropertyDescriptor to create a new object that does the exact
@@ -247,8 +255,6 @@
   //   http://www.whatwg.org/specs/web-apps/current-work/multipage/number-state.html#radio-button-group
   //
   function getAssociatedRadioButtons(element) {
-    if (!element.ownerDocument.contains(element))
-      return [];
     if (element.form) {
       return filter(element.form.elements, function(el) {
         return el != element &&
@@ -257,7 +263,10 @@
             el.name == element.name;
       });
     } else {
-      var radios = element.ownerDocument.querySelectorAll(
+      var treeScope = getTreeScope(element);
+      if (!treeScope)
+        return [];
+      var radios = treeScope.querySelectorAll(
           'input[type="radio"][name="' + element.name + '"]');
       return filter(radios, function(el) {
         return el != element && !el.form;
diff --git a/tests/tests.js b/tests/tests.js
index d0a5088..bd864c6 100644
--- a/tests/tests.js
+++ b/tests/tests.js
@@ -439,11 +439,11 @@ suite('Form Element Bindings', function() {
     assert.isFalse(input.checked);
   });
 
-  test('(Radio)Input.checked 2', function() {
+  function radioInputChecked2(host) {
     var model = {val1: true, val2: false, val3: false, val4: true};
     var RADIO_GROUP_NAME = 'test';
 
-    var container = testDiv.appendChild(document.createElement('div'));
+    var container = host.appendChild(document.createElement('div'));
 
     var el1 = container.appendChild(document.createElement('input'));
     el1.type = 'radio';
@@ -492,9 +492,20 @@ suite('Form Element Bindings', function() {
     assert.strictEqual(false, model.val2);
     assert.strictEqual(true, model.val3);
     assert.strictEqual(true, model.val4);
+  }
+
+  test('(Radio)Input.checked 2', function() {
+    radioInputChecked2(testDiv);
   });
 
-  test('(Radio)Input.checked - multiple forms', function() {
+  test('(Radio)Input.checked 2 - ShadowRoot', function() {
+    var div = document.createElement('div');
+    var shadowRoot = div.webkitCreateShadowRoot();
+    radioInputChecked2(shadowRoot);
+    unbindAll(shadowRoot);
+  });
+
+  function radioInputCheckedMultipleForms(host) {
     var model = {val1: true, val2: false, val3: false, val4: true};
     var RADIO_GROUP_NAME = 'test';
 
@@ -545,6 +556,17 @@ suite('Form Element Bindings', function() {
     // Radio buttons in form1 should be unaffected
     assert.strictEqual(false, model.val1);
     assert.strictEqual(true, model.val2);
+  }
+
+  test('(Radio)Input.checked - multiple forms', function() {
+    radioInputCheckedMultipleForms(testDiv);
+  });
+
+test('(Radio)Input.checked - multiple forms - ShadowRoot', function() {
+    var div = document.createElement('div');
+    var shadowRoot = div.webkitCreateShadowRoot();
+    radioInputCheckedMultipleForms(shadowRoot);
+    unbindAll(shadowRoot);
   });
 
   test('Select.selectedIndex', function() {