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gaia/apps/email/js/date.js

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+'use strict';
+define(function(require) {
+  const mozIntl = require('moz_intl');
+  var shortRelativeDateFmt, longRelativeDateFmt;
+
+  function setRelativeDateFormatters() {
+    shortRelativeDateFmt = mozIntl._gaia.RelativeDate(navigator.languages, {
+      style: 'short'
+    });
+    longRelativeDateFmt = mozIntl._gaia.RelativeDate(navigator.languages, {
+      style: 'long'
+    });
+  }
+
+  setRelativeDateFormatters();
+  window.addEventListener('languagechange', setRelativeDateFormatters);
+
+  var date = {
+    /**
+     * Display a human-readable relative timestamp.
+     */
+    relativeDateElement: function(element, time, useCompactFormat) {
+      if (time) {
+        var f = useCompactFormat ? shortRelativeDateFmt : longRelativeDateFmt;
+        f.formatElement(element, time);
+      } else {
+        element.textContent = '';
+      }
+    },
+
+    /**
+     * Given a node, show a pretty date for its contents.
+     * @param {Node} node  the DOM node.
+     * @param {Number} timestamp a timestamp like the one retuned
+     * from Date.getTime().
+     */
+    setPrettyNodeDate: function(node, timestamp) {
+      if (timestamp) {
+        node.dataset.time = timestamp.valueOf();
+        node.dataset.compactFormat = true;
+        date.relativeDateElement(node, timestamp, true);
+      } else {
+        node.textContent = '';
+        node.removeAttribute('data-time');
+      }
+    }
+  };
+
+  return date;
+});