Upgrade to 1.0 and switch clients to dom-repeat where needed.

third_party/polymer/v0_8/components/paper-radio-group/paper-radio-group.html

+<!--
+@license
+Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+
+<link rel="import" href="../polymer/polymer.html">
+<link rel="import" href="../iron-selector/iron-selector.html">
+<link rel="import" href="../paper-radio-button/paper-radio-button.html">
+<link rel="import" href="../iron-a11y-keys-behavior/iron-a11y-keys-behavior.html">
+
+<!--
+`paper-radio-group` allows user to select only one radio button from a set.
+Checking one radio button that belongs to a radio group unchecks any
+previously checked radio button within the same group. Use
+`selected` to get or set the selected radio button.
+
+Example:
+
+    <paper-radio-group selected="small">
+      <paper-radio-button name="small" label="Small"></paper-radio-button>
+      <paper-radio-button name="medium" label="Medium"></paper-radio-button>
+      <paper-radio-button name="large" label="Large"></paper-radio-button>
+    </paper-radio-group>
+
+See <a href="paper-radio-button.html">paper-radio-button</a> for more
+information about `paper-radio-button`.
+
+@group Paper Elements
+@element paper-radio-group
+@hero hero.svg
+@demo demo/index.html
+-->
+
+<dom-module name="paper-radio-group">
+  <style>
+    :host {
+      display: inline-block;
+    }
+
+    iron-selector ::content > * {
+      padding: 12px;
+    }
+  </style>
+
+  <template>
+    <iron-selector selected="{{selected}}" attr-for-selected="name"
+        selectable="paper-radio-button">
+      <content id="items" select="*"></content>
+    </iron-selector>
+  </template>
+
+</dom-module>
+
+<script>
+  Polymer({
+    is: 'paper-radio-group',
+
+    behaviors: [
+      Polymer.IronA11yKeysBehavior
+    ],
+
+    hostAttributes: {
+      role: 'radiogroup',
+      tabindex: 0
+    },
+
+    properties: {
+      /**
+       * Fired when the selected element changes to user interaction.
+       *
+       * @event paper-radio-group-changed
+       */
+
+      /**
+       * Gets or sets the selected element. Use the `name` attribute of the
+       * <paper-radio-button> that should be selected.
+       *
+       * @attribute selected
+       * @type String
+       * @default null
+       */
+
+      selected: {
+        type: String,
+        value: null,
+        notify: true,
+        reflectToAttribute: true,
+        observer: "_selectedChanged"
+      }
+    },
+
+    keyBindings: {
+      'left up': '_selectPrevious',
+      'right down': '_selectNext',
+    },
+
+    _selectedChanged: function() {
+      // TODO: This only needs to be async while a domReady event is unavailable.
+      this.async(function() {
+        this._selectIndex(this._valueToIndex(this.items, this.selected));
+        this.fire('paper-radio-group-changed');
+      });
+    },
+
+    _selectNext: function() {
+      this.selected = this._nextNode();
+    },
+
+    _selectPrevious: function() {
+      this.selected = this._previousNode();
+    },
+
+    /**
+     * Returns an array of all items.
+     *
+     * @property items
+     * @type array
+     */
+    get items() {
+      return Polymer.dom(this.$.items).getDistributedNodes();
+    },
+
+    _nextNode: function() {
+      var items = this.items;
+      var index = this._selectedIndex;
+      var newIndex = index;
+      do {
+        newIndex = (newIndex + 1) % items.length;
+        if (newIndex === index) {
+          break;
+        }
+      } while (items[newIndex].disabled);
+      return this._valueForNode(items[newIndex]);
+    },
+
+    _previousNode: function() {
+      var items = this.items;
+      var index = this._selectedIndex;
+      var newIndex = index;
+      do {
+        newIndex = (newIndex || items.length) - 1;
+        if (newIndex === index) {
+          break;
+        }
+      } while (items[newIndex].disabled);
+      return this._valueForNode(items[newIndex]);
+    },
+
+    _selectIndex: function(index) {
+      if (index == this._selectedIndex)
+        return;
+
+      var nodes = this.items;
+
+      // If there was a previously selected node, deselect it.
+      if (nodes[this._selectedIndex]) {
+        nodes[this._selectedIndex].checked = false;
+      }
+
+      // Select a new node.
+      nodes[index].checked = true;
+      nodes[index].focus();
+      this._selectedIndex = index;
+    },
+
+    _valueForNode: function(node) {
+      return node["name"] || node.getAttribute("name");
+    },
+
+    // Finds an item with value == |value| and return its index.
+    _valueToIndex: function(items, value) {
+      for (var index = 0, node; (node = items[index]); index++) {
+        if (this._valueForNode(node) == value) {
+          return index;
+        }
+      }
+      // If no item found, the value itself is probably the index.
+      return value;
+    }
+  });
+</script>