From d38caccfafce404605b185b87d7bada36c810cda Mon Sep 17 00:00:00 2001
From: Russell Bicknell <bicknellr@google.com>
Date: Mon, 8 Aug 2016 10:23:28 -0700
Subject: [PATCH] copy from paper-checkbox

---
 demo/paper-checkbox-light.html | 116 ++++++++++++
 paper-checkbox-light.html      | 311 +++++++++++++++++++++++++++++++++
 2 files changed, 427 insertions(+)
 create mode 100644 demo/paper-checkbox-light.html
 create mode 100644 paper-checkbox-light.html
diff --git a/demo/paper-checkbox-light.html b/demo/paper-checkbox-light.html
new file mode 100644
index 0000000..9017a69
--- /dev/null
+++ b/demo/paper-checkbox-light.html
@@ -0,0 +1,116 @@
+<!doctype 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
+-->
+<html>
+  <head>
+    <title>paper-checkbox-light demo</title>
+
+    <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1, user-scalable=yes">
+    <meta name="mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+
+    <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
+    <link rel="import" href="../../iron-demo-helpers/demo-snippet.html">
+    <link rel="import" href="../../iron-demo-helpers/demo-pages-shared-styles.html">
+    <link rel="import" href="../paper-checkbox-light.html">
+
+    <style is="custom-style" include="demo-pages-shared-styles">
+      paper-checkbox-light {
+        display: block;
+        margin-right: 24px;
+      }
+
+      demo-snippet {
+        margin-bottom: 40px;
+      }
+      .vertical-section-container {
+        max-width: 550px;
+      }
+    </style>
+  </head>
+  <body unresolved>
+    <div class="vertical-section-container centered">
+      <h3>Checkboxes can be checked or unchecked, or disabled entirely</h3>
+      <demo-snippet class="centered-demo">
+        <template>
+          <paper-checkbox-light>Checkbox</paper-checkbox-light>
+          <paper-checkbox-light checked>Checkbox</paper-checkbox-light>
+          <paper-checkbox-light disabled>Disabled</paper-checkbox-light>
+        </template>
+      </demo-snippet>
+
+      <h3>Checkboxes can hide the ripple effect using the <i>noink</i> attribute</h3>
+      <demo-snippet class="centered-demo">
+        <template>
+          <paper-checkbox-light noink>Checkbox</paper-checkbox-light>
+        </template>
+      </demo-snippet>
+
+      <h3>Checkboxes can be styled using custom properties</h3>
+      <demo-snippet class="centered-demo small-text">
+        <template>
+          <style is="custom-style">
+            paper-checkbox-light.red {
+              --paper-checkbox-checked-color: var(--paper-red-500);
+              --paper-checkbox-checked-ink-color: var(--paper-red-500);
+              --paper-checkbox-unchecked-color: var(--paper-red-900);
+              --paper-checkbox-unchecked-ink-color: var(--paper-red-900);
+              --paper-checkbox-label-color: var(--paper-red-500);
+              --paper-checkbox-vertical-align: top;
+            }
+
+            paper-checkbox-light.green {
+              align-self: center;
+              border: 1px solid var(--paper-green-200);
+              padding: 8px 16px;
+
+              --paper-checkbox-checked-color: var(--paper-green-500);
+              --paper-checkbox-checked-ink-color: var(--paper-green-500);
+              --paper-checkbox-unchecked-color: var(--paper-green-900);
+              --paper-checkbox-unchecked-ink-color: var(--paper-green-900);
+              --paper-checkbox-label-color: var(--paper-green-500);
+              --paper-checkbox-label-spacing: 0;
+              --paper-checkbox-margin: 8px 16px 8px 0;
+              --paper-checkbox-vertical-align: top;
+            }
+
+            paper-checkbox-light.blue {
+              --paper-checkbox-checked-color: var(--paper-blue-500);
+              --paper-checkbox-checked-ink-color: var(--paper-blue-500);
+              --paper-checkbox-unchecked-color: var(--paper-blue-900);
+              --paper-checkbox-unchecked-ink-color: var(--paper-blue-900);
+              --paper-checkbox-label-color: var(--paper-blue-500);
+              --paper-checkbox-label-checked-color: var(--paper-blue-900);
+            }
+
+            paper-checkbox-light .subtitle {
+              display: block;
+              font-size: 0.8em;
+              margin-top: 2px;
+              max-width: 150px;
+            }
+          </style>
+
+          <paper-checkbox-light class="red">
+            Checkbox
+            <span class="subtitle">With a subtitle</span>
+          </paper-checkbox-light>
+          <paper-checkbox-light checked class="green">
+            Checkbox
+            <span class="subtitle">
+              With a longer subtitle that wraps to another line
+            </span>
+          </paper-checkbox-light>
+          <paper-checkbox-light class="blue">Checkbox</paper-checkbox-light>
+        </template>
+      </demo-snippet>
+    </div>
+  </body>
+</html>
diff --git a/paper-checkbox-light.html b/paper-checkbox-light.html
new file mode 100644
index 0000000..3c1fe98
--- /dev/null
+++ b/paper-checkbox-light.html
@@ -0,0 +1,311 @@
+<!--
+@license
+Copyright (c) 2016 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="../paper-styles/default-theme.html">
+<link rel="import" href="../paper-behaviors/paper-checked-element-behavior.html">
+
+<!--
+Material design: [Checkbox](https://www.google.com/design/spec/components/selection-controls.html#selection-controls-checkbox)
+
+`paper-checkbox` is a button that can be either checked or unchecked.  User
+can tap the checkbox to check or uncheck it.  Usually you use checkboxes
+to allow user to select multiple options from a set.  If you have a single
+ON/OFF option, avoid using a single checkbox and use `paper-toggle-button`
+instead.
+
+Example:
+
+    <paper-checkbox>label</paper-checkbox>
+
+    <paper-checkbox checked> label</paper-checkbox>
+
+### Styling
+
+The following custom properties and mixins are available for styling:
+
+Custom property | Description | Default
+----------------|-------------|----------
+`--paper-checkbox-unchecked-background-color` | Checkbox background color when the input is not checked | `transparent`
+`--paper-checkbox-unchecked-color` | Checkbox border color when the input is not checked | `--primary-text-color`
+`--paper-checkbox-unchecked-ink-color` | Selected/focus ripple color when the input is not checked | `--primary-text-color`
+`--paper-checkbox-checked-color` | Checkbox color when the input is checked | `--primary-color`
+`--paper-checkbox-checked-ink-color` | Selected/focus ripple color when the input is checked | `--primary-color`
+`--paper-checkbox-checkmark-color` | Checkmark color | `white`
+`--paper-checkbox-label-color` | Label color | `--primary-text-color`
+`--paper-checkbox-label-checked-color` | Label color when the input is checked | `--paper-checkbox-label-color`
+`--paper-checkbox-label-spacing` | Spacing between the label and the checkbox | `8px`
+`--paper-checkbox-label` | Mixin applied to the label | `{}`
+`--paper-checkbox-label-checked` | Mixin applied to the label when the input is checked | `{}`
+`--paper-checkbox-error-color` | Checkbox color when invalid | `--error-color`
+`--paper-checkbox-size` | Size of the checkbox | `18px`
+`--paper-checkbox-ink-size` | Size of the ripple | `48px`
+`--paper-checkbox-margin` | Margin around the checkbox container | `initial`
+`--paper-checkbox-vertical-align` | Vertical alignment of the checkbox container | `middle`
+
+This element applies the mixin `--paper-font-common-base` but does not import `paper-styles/typography.html`.
+In order to apply the `Roboto` font to this element, make sure you've imported `paper-styles/typography.html`.
+
+@demo demo/index.html
+-->
+
+<dom-module id="paper-checkbox">
+  <template strip-whitespace>
+    <style>
+      :host {
+        display: inline-block;
+        white-space: nowrap;
+        cursor: pointer;
+        --calculated-paper-checkbox-size: var(--paper-checkbox-size, 18px);
+        /* -1px is a sentinel for the default and is replaced in `attached`. */
+        --calculated-paper-checkbox-ink-size: var(--paper-checkbox-ink-size, -1px);
+        @apply(--paper-font-common-base);
+        line-height: 0;
+        -webkit-tap-highlight-color: transparent;
+      }
+
+      :host([hidden]) {
+        display: none !important;
+      }
+
+      :host(:focus) {
+        outline: none;
+      }
+
+      .hidden {
+        display: none;
+      }
+
+      #checkboxContainer {
+        display: inline-block;
+        position: relative;
+        width: var(--calculated-paper-checkbox-size);
+        height: var(--calculated-paper-checkbox-size);
+        min-width: var(--calculated-paper-checkbox-size);
+        margin: var(--paper-checkbox-margin, initial);
+        vertical-align: var(--paper-checkbox-vertical-align, middle);
+        background-color: var(--paper-checkbox-unchecked-background-color, transparent);
+      }
+
+      #ink {
+        position: absolute;
+
+        /* Center the ripple in the checkbox by negative offsetting it by
+         * (inkWidth - rippleWidth) / 2 */
+        top: calc(0px - (var(--calculated-paper-checkbox-ink-size) - var(--calculated-paper-checkbox-size)) / 2);
+        left: calc(0px - (var(--calculated-paper-checkbox-ink-size) - var(--calculated-paper-checkbox-size)) / 2);
+        width: var(--calculated-paper-checkbox-ink-size);
+        height: var(--calculated-paper-checkbox-ink-size);
+        color: var(--paper-checkbox-unchecked-ink-color, var(--primary-text-color));
+        opacity: 0.6;
+        pointer-events: none;
+      }
+
+      :host-context([dir="rtl"]) #ink {
+        right: calc(0px - (var(--calculated-paper-checkbox-ink-size) - var(--calculated-paper-checkbox-size)) / 2);
+        left: auto;
+      }
+
+      #ink[checked] {
+        color: var(--paper-checkbox-checked-ink-color, var(--primary-color));
+      }
+
+      #checkbox {
+        position: relative;
+        box-sizing: border-box;
+        height: 100%;
+        border: solid 2px;
+        border-color: var(--paper-checkbox-unchecked-color, var(--primary-text-color));
+        border-radius: 2px;
+        pointer-events: none;
+        -webkit-transition: background-color 140ms, border-color 140ms;
+        transition: background-color 140ms, border-color 140ms;
+      }
+
+      /* checkbox checked animations */
+      #checkbox.checked #checkmark {
+        -webkit-animation: checkmark-expand 140ms ease-out forwards;
+        animation: checkmark-expand 140ms ease-out forwards;
+      }
+
+      @-webkit-keyframes checkmark-expand {
+        0% {
+          -webkit-transform: scale(0, 0) rotate(45deg);
+        }
+        100% {
+          -webkit-transform: scale(1, 1) rotate(45deg);
+        }
+      }
+
+      @keyframes checkmark-expand {
+        0% {
+          transform: scale(0, 0) rotate(45deg);
+        }
+        100% {
+          transform: scale(1, 1) rotate(45deg);
+        }
+      }
+
+      #checkbox.checked {
+        background-color: var(--paper-checkbox-checked-color, var(--primary-color));
+        border-color: var(--paper-checkbox-checked-color, var(--primary-color));
+      }
+
+      #checkmark {
+        position: absolute;
+        width: 36%;
+        height: 70%;
+        border-style: solid;
+        border-top: none;
+        border-left: none;
+        border-right-width: calc(2/15 * var(--calculated-paper-checkbox-size));
+        border-bottom-width: calc(2/15 * var(--calculated-paper-checkbox-size));
+        border-color: var(--paper-checkbox-checkmark-color, white);
+        -webkit-transform-origin: 97% 86%;
+        transform-origin: 97% 86%;
+        box-sizing: content-box; /* protect against page-level box-sizing */
+      }
+
+      :host-context([dir="rtl"]) #checkmark {
+        -webkit-transform-origin: 50% 14%;
+        transform-origin: 50% 14%;
+      }
+
+      /* label */
+      #checkboxLabel {
+        position: relative;
+        display: inline-block;
+        vertical-align: middle;
+        padding-left: var(--paper-checkbox-label-spacing, 8px);
+        white-space: normal;
+        line-height: normal;
+        color: var(--paper-checkbox-label-color, var(--primary-text-color));
+        @apply(--paper-checkbox-label);
+      }
+
+      :host([checked]) #checkboxLabel {
+        color: var(--paper-checkbox-label-checked-color, var(--paper-checkbox-label-color, var(--primary-text-color)));
+        @apply(--paper-checkbox-label-checked);
+      }
+
+      :host-context([dir="rtl"]) #checkboxLabel {
+        padding-right: var(--paper-checkbox-label-spacing, 8px);
+        padding-left: 0;
+      }
+
+      #checkboxLabel[hidden] {
+        display: none;
+      }
+
+      /* disabled state */
+
+      :host([disabled]) #checkbox {
+        opacity: 0.5;
+        border-color: var(--paper-checkbox-unchecked-color, var(--primary-text-color));
+      }
+
+      :host([disabled][checked]) #checkbox {
+        background-color: var(--paper-checkbox-unchecked-color, var(--primary-text-color));
+        opacity: 0.5;
+      }
+
+      :host([disabled]) #checkboxLabel  {
+        opacity: 0.65;
+      }
+
+      /* invalid state */
+      #checkbox.invalid:not(.checked) {
+        border-color: var(--paper-checkbox-error-color, var(--error-color));
+      }
+    </style>
+
+    <div id="checkboxContainer">
+      <div id="checkbox" class$="[[_computeCheckboxClass(checked, invalid)]]">
+        <div id="checkmark" class$="[[_computeCheckmarkClass(checked)]]"></div>
+      </div>
+    </div>
+
+    <div id="checkboxLabel"><content></content></div>
+  </template>
+
+  <script>
+    Polymer({
+      is: 'paper-checkbox',
+
+      behaviors: [
+        Polymer.PaperCheckedElementBehavior
+      ],
+
+      hostAttributes: {
+        role: 'checkbox',
+        'aria-checked': false,
+        tabindex: 0
+      },
+
+      properties: {
+        /**
+         * Fired when the checked state changes due to user interaction.
+         *
+         * @event change
+         */
+
+        /**
+         * Fired when the checked state changes.
+         *
+         * @event iron-change
+         */
+        ariaActiveAttribute: {
+          type: String,
+          value: 'aria-checked'
+        }
+      },
+
+      attached: function() {
+        var inkSize = this.getComputedStyleValue('--calculated-paper-checkbox-ink-size');
+        // If unset, compute and set the default `--paper-checkbox-ink-size`.
+        if (inkSize === '-1px') {
+          var checkboxSize = parseFloat(this.getComputedStyleValue('--calculated-paper-checkbox-size'));
+          var defaultInkSize = Math.floor((8 / 3) * checkboxSize);
+
+          // The checkbox and ripple need to have the same parity so that their
+          // centers align.
+          if (defaultInkSize % 2 !== checkboxSize % 2) {
+            defaultInkSize++;
+          }
+
+          this.customStyle['--paper-checkbox-ink-size'] = defaultInkSize + 'px';
+          this.updateStyles();
+        }
+      },
+
+      _computeCheckboxClass: function(checked, invalid) {
+        var className = '';
+        if (checked) {
+          className += 'checked ';
+        }
+        if (invalid) {
+          className += 'invalid';
+        }
+        return className;
+      },
+
+      _computeCheckmarkClass: function(checked) {
+        return checked ? '' : 'hidden';
+      },
+
+      // create ripple inside the checkboxContainer
+      _createRipple: function() {
+        this._rippleContainer = this.$.checkboxContainer;
+        return Polymer.PaperInkyFocusBehaviorImpl._createRipple.call(this);
+      }
+
+    });
+  </script>
+</dom-module>
