Index: polymer_1.0.4/bower_components/paper-radio-group/paper-radio-group.html |
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+<!-- |
+@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-selectable.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">Small</paper-radio-button> |
+ <paper-radio-button name="medium">Medium</paper-radio-button> |
+ <paper-radio-button name="large">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; |
+ } |
+ |
+ :host ::content > * { |
+ padding: 12px; |
+ } |
+ </style> |
+ |
+ <template> |
+ <content id="items" select="*"></content> |
+ </template> |
+ |
+</dom-module> |
+ |
+<script> |
+ Polymer({ |
+ is: 'paper-radio-group', |
+ |
+ behaviors: [ |
+ Polymer.IronA11yKeysBehavior, |
+ Polymer.IronSelectableBehavior |
+ ], |
+ |
+ hostAttributes: { |
+ role: 'radiogroup', |
+ tabindex: 0 |
+ }, |
+ |
+ properties: { |
+ /** |
+ * Overriden from Polymer.IronSelectableBehavior |
+ */ |
+ attrForSelected: { |
+ type: String, |
+ value: 'name' |
+ }, |
+ |
+ /** |
+ * Overriden from Polymer.IronSelectableBehavior |
+ */ |
+ selectedAttribute: { |
+ type: String, |
+ value: 'checked' |
+ } |
+ }, |
+ |
+ keyBindings: { |
+ 'left up': 'selectPrevious', |
+ 'right down': 'selectNext', |
+ }, |
+ |
+ /** |
+ * Selects the given value. |
+ */ |
+ select: function(value) { |
+ if (this.selected) { |
+ var oldItem = this._valueToItem(this.selected); |
+ |
+ // Do not allow unchecking the selected item. |
+ if (this.selected == value) { |
+ oldItem.checked = true; |
+ return; |
+ } |
+ |
+ if (oldItem) |
+ oldItem.checked = false; |
+ } |
+ |
+ Polymer.IronSelectableBehavior.select.apply(this, [value]); |
+ this.fire('paper-radio-group-changed'); |
+ }, |
+ |
+ /** |
+ * Selects the previous item. If the previous item is disabled, then it is |
+ * skipped, and its previous item is selected |
+ */ |
+ selectPrevious: function() { |
+ var length = this.items.length; |
+ var newIndex = Number(this._valueToIndex(this.selected)); |
+ |
+ do { |
+ newIndex = (newIndex - 1 + length) % length; |
+ } while (this.items[newIndex].disabled) |
+ |
+ this.select(this._indexToValue(newIndex)); |
+ }, |
+ |
+ /** |
+ * Selects the next item. If the next item is disabled, then it is |
+ * skipped, and its nexy item is selected |
+ */ |
+ selectNext: function() { |
+ var length = this.items.length; |
+ var newIndex = Number(this._valueToIndex(this.selected)); |
+ |
+ do { |
+ newIndex = (newIndex + 1 + length) % length; |
+ } while (this.items[newIndex].disabled) |
+ |
+ this.select(this._indexToValue(newIndex)); |
+ }, |
+ }); |
+</script> |