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Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/shared/elements/gaia_checkbox/examples/example.js

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+'use strict';
+
+var result = document.getElementById('result');
+
+var elements = document.querySelectorAll('gaia-checkbox');
+
+[].forEach.call(elements, function(element, index) {
+  element.addEventListener('click', function(e) {
+    result.textContent = 'Click event for: ' + (index + 1) + ' value: ' +
+      e.target.checked;
+  });
+
+});

gaia/shared/elements/gaia_checkbox/examples/index.html

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+<!DOCTYPE html>
+<html dir="ltr">
+<head>
+  <meta charset="utf-8" />
+  <title>GaiaCheckbox Demo</title>
+  <meta name="description" content="Demo app for gaia-checkbox" />
+  <style type="text/css">
+    html,
+    body {
+      margin: 0;
+      padding: 0;
+      font-size: 10px;
+      background-color: #fff;
+      width: 100%;
+    }
+    section {
+      margin: 2rem;
+      border-bottom: 1px solid #000;
+    }
+  </style>
+  <script>
+    window.onload = function() {
+      var dirInput = document.getElementById('dir');
+      dirInput.checked = false;
+      dirInput.onchange= function() {
+        document.documentElement.dir = this.checked ? 'rtl' : 'ltr';
+      }
+    };
+  </script>
+  <script src="../../../js/component_utils.js"></script>
+  <script>window.GaiaCheckboxBaseurl = '../';</script>
+  <script src="../script.js"></script>
+  <script defer src="example.js"></script>
+</head>
+<body role="application">
+  <p dir="ltr">
+    <label class="bb-docs">
+      <input id="dir" type="checkbox"> RTL mode
+    </label>
+  </p>
+  <section>
+    <gaia-checkbox></gaia-checkbox>
+  </section>
+  <section>
+    <gaia-checkbox checked style="width: 100%;">
+      <label>With a label</label>
+    </gaia-checkbox>
+  </section>
+  <section>
+    <gaia-checkbox class="danger"></gaia-checkbox>
+  </section>
+  <section>
+    <gaia-checkbox class="danger" checked>
+      <label>Class = danger</label>
+    </gaia-checkbox>
+  </section>
+  <section>
+    <gaia-checkbox class="inline" checked>
+      <label>Class = inline</label>
+    </gaia-checkbox>
+  </section>
+  <div id="result"></div>
+</body>
+</html>

gaia/shared/elements/gaia_checkbox/script.js

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+'use strict';
+/* global ComponentUtils */
+
+window.GaiaCheckbox = (function(win) {
+  // Extend from the HTMLElement prototype
+  var proto = Object.create(HTMLElement.prototype);
+
+  // Allow baseurl to be overridden (used for demo page)
+  var baseurl = window.GaiaCheckboxBaseurl ||
+    '/shared/elements/gaia_checkbox/';
+
+  proto.createdCallback = function() {
+
+    // A timestamp of the last click on the checkbox.
+    // We use this to throttle click events to the control.
+    // This is a temporary workaround for bug 1221886.
+    this.lastClick = 0;
+    this.throttleTime = 250;
+
+    var shadow = this.createShadowRoot();
+    this._template = template.content.cloneNode(true);
+
+    this._wrapper = this._template.getElementById('checkbox');
+    this._wrapper.addEventListener('click', this.handleClick.bind(this));
+
+    this.configureClass();
+
+    this.checked = this.hasAttribute('checked');
+    this._wrapper.setAttribute('aria-checked', this.checked);
+    this.setAttribute('role', 'presentation');
+
+    shadow.appendChild(this._template);
+
+    ComponentUtils.style.call(this, baseurl);
+  };
+
+
+
+  /**
+   * Handles a click event on the shadow dom.
+   * We handle checking/unchecking of the checkbox and proxy the click
+   * event to any click listeners on the gaia-radio. This is a nice transition
+   * that preserves backwards behavior and should make it easier to port apps.
+   */
+  proto.handleClick = function(e) {
+    // We add this event listener twice (see above) on both the content and
+    // custom element nodes. We need to stop the event propagation to prevent
+    // this event from firing against both nodes.
+    e.preventDefault();
+    e.stopImmediatePropagation();
+
+    // Workaround for bug 1221886 - throttle clicks if needed.
+    if (this.lastClick + this.throttleTime > Date.now()) {
+      return;
+    }
+    this.lastClick = Date.now();
+
+    // Dispatch a click event to any listeners to the app.
+    // We should be able to remove this when bug 887541 lands.
+    var event = new MouseEvent('click', {
+      view: window,
+      bubbles: true,
+      cancelable: true
+    });
+    this.dispatchEvent(event);
+
+    if (!event.defaultPrevented) {
+      this.checked = !this.checked;
+      this._wrapper.setAttribute('aria-checked', this.checked);
+    }
+
+    // Dispatch a change event for the gaia-switch.
+    this.dispatchEvent(new CustomEvent('change', {
+      bubbles: true,
+      cancelable: false
+    }));
+  };
+
+  /**
+   * Configures the class for the element.
+   */
+  proto.configureClass = function() {
+    this._wrapper.className = this.className;
+  };
+
+  /**
+   * Proxy className property to the wrapper.
+   */
+  proto.attributeChangedCallback = function(name, from, to) {
+    if (name === 'class') {
+      this._wrapper.className = to;
+    }
+  };
+
+  /**
+   * Proxy the checked property to the input element.
+   */
+  Object.defineProperty(proto, 'checked', {
+    get: function() {
+      return this._checked || false;
+    },
+    set: function(value) {
+      this._wrapper.classList.toggle('checked', value);
+      this._checked = value;
+    }
+  });
+
+  /**
+   * Proxy the name property to the input element.
+   */
+  Object.defineProperty(proto, 'name', {
+    get: function() {
+      return this.getAttribute('name');
+    },
+    set: function(value) {
+      this.setAttribute('name', value);
+    }
+  });
+
+  var template = document.createElement('template');
+
+  template.innerHTML =
+    `<span id="checkbox" role="checkbox">
+      <span role="presentation"><content select="label"></content></span>
+    </span>`;
+
+  // Register and return the constructor
+  return document.registerElement('gaia-checkbox', { prototype: proto });
+})(window);

gaia/shared/elements/gaia_checkbox/style.css

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+gaia-checkbox {
+  display: inline-block;
+  width: 100%;
+}
+
+#checkbox {
+  display: block;
+  width: 100%;
+  /* Normal gaia-checkboxes are the heights of their parents. */
+  height: 100%;
+  position: relative;
+  background: none;
+}
+
+#checkbox span {
+  font-size: 1.9rem;
+  font-weight: normal;
+  color: var(--label-color);
+  line-height: 3rem;
+  box-sizing: border-box;
+  display: block;
+  min-width: 2.2rem;
+  min-height: 2.2rem;
+  width: 100%;
+  padding-inline-end: 2.2rem;
+  /* Override inheriting nowrap from legacy lists building blocks. */
+  white-space: normal;
+}
+
+/* Inline gaia-checkboxes are the heights of their parents. */
+#checkbox.inline {
+  display: inline-block;
+  vertical-align: middle;
+}
+
+#checkbox:not(.invisible) span:after {
+  content: '';
+  position: absolute;
+  offset-inline-end: 0;
+  top: 50%;
+  margin: -1.2rem 0 0;
+  margin-inline-start: -1.2rem;
+  width: 2.2rem;
+  height: 2.2rem;
+}
+
+#checkbox.inline span {
+  padding-inline-start: 3rem;
+  padding-inline-end: 0;
+  height: auto;
+}
+
+#checkbox.inline span:after {
+  offset-inline-start: 1.2rem;
+  offset-inline-end: unset;
+  margin: -1.2rem 0 0;
+  margin-inline-start: -1.2rem;
+}
+
+#checkbox:not(.invisible) span:after {
+  background: url(images/default.png) no-repeat center top / 2.2rem auto;
+}
+
+#checkbox.checked span:after {
+  background-position: center bottom;
+}
+
+/* 'Dangerous' checkboxes */
+#checkbox.danger span:after {
+  background-image: url(images/danger.png);
+}