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gaia/apps/email/js/cards/base_card.js

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+'use strict';
+define(function(require) {
+  var date = require('date'),
+      mozL10n = require('l10n!'),
+      base = require('./base');
+
+  // Set up the global time updates for all nodes.
+  (function() {
+    var updatePrettyDate = function updatePrettyDate() {
+      var labels = [...document.querySelectorAll('[data-time]')];
+      labels.forEach(label => {
+        date.relativeDateElement(label, label.dataset.time);
+      });
+    };
+    var timer = setInterval(updatePrettyDate, 60 * 1000);
+
+    function updatePrettyDateOnEvent() {
+      clearInterval(timer);
+      updatePrettyDate();
+      timer = setInterval(updatePrettyDate, 60 * 1000);
+    }
+    // When user changes the language, update timestamps.
+    mozL10n.ready(updatePrettyDateOnEvent);
+
+    // On visibility change to not hidden, update timestamps
+    document.addEventListener('visibilitychange', function() {
+      if (document && !document.hidden) {
+        updatePrettyDateOnEvent();
+      } else {
+        // If not visible, clear the interval to be a battery good citizen.
+        clearInterval(timer);
+      }
+    });
+
+  })();
+
+  return function baseCard(templateMixins) {
+    // Set up the base mixin
+    return [
+      base(templateMixins),
+      {
+        createdCallback: function() {
+          // Set up extra classes and other node information that distinguishes
+          // as a card. Doing this here so that by the time the createdCallback
+          // provided by the card so that the DOM at that point can be used for
+          // HTML caching purposes.
+          if (this.extraClasses) {
+            this.classList.add.apply(this.classList,
+                                        this.extraClasses);
+          }
+
+          this.classList.add('card');
+        },
+
+        batchAddClass: function(searchClass, classToAdd) {
+          var nodes = this.getElementsByClassName(searchClass);
+          for (var i = 0; i < nodes.length; i++) {
+            nodes[i].classList.add(classToAdd);
+          }
+        }
+      }
+    ];
+  };
+});