MD-Settings A11y: Disable radio list if all options are disabled.

third_party/polymer/v1_0/components-chromium/paper-radio-group/paper-radio-group-extracted.js

Index: third_party/polymer/v1_0/components-chromium/paper-radio-group/paper-radio-group-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/paper-radio-group/paper-radio-group-extracted.js b/third_party/polymer/v1_0/components-chromium/paper-radio-group/paper-radio-group-extracted.js
index 642f8ec5a6983b1fc01e1b3658ba205dcfb2e9d1..72f7f779bb1abe5edd7abe9471304355a85f0870 100644
--- a/third_party/polymer/v1_0/components-chromium/paper-radio-group/paper-radio-group-extracted.js
+++ b/third_party/polymer/v1_0/components-chromium/paper-radio-group/paper-radio-group-extracted.js
@@ -7,7 +7,6 @@ Polymer({
 
     hostAttributes: {
       role: 'radiogroup',
-      tabindex: 0
     },
 
     properties: {
@@ -47,7 +46,12 @@ Polymer({
       allowEmptySelection: {
         type: Boolean,
         value: false
-      }
+      },
+
+      disabled: {
+        type: Boolean,
+        observer: '_onDisableChange',

[Dan Beam, 2017/02/23 20:49:14]

nit: changed

+      },
     },
 
     /**
@@ -107,5 +111,12 @@ Polymer({
     _onRightKey: function(event) {
       Polymer.IronMenubarBehaviorImpl._onRightKey.apply(this, arguments);
       this._activateFocusedItem();
-    }
-  });
+    },
+
+    _onDisableChange: function(disabled) {
+      if (disabled)
+        this.removeAttribute('tabindex');
+      else
+        this.tabindex = 0;
+    },
+  });