[Plugins] Bring over timeline, clock plugins

WTD-1239

platform/features/timeline/src/TimelineFormatter.js

@@ -0,0 +1,57 @@
+/*global define*/
+
+define(
+    [],
+    function () {
+        'use strict';
+
+        // Conversion factors from time units to milliseconds
+        var SECONDS = 1000,
+            MINUTES = SECONDS * 60,
+            HOURS = MINUTES * 60,
+            DAYS = HOURS * 24;
+
+        /**
+         * Formatters for durations shown in a timeline view.
+         * @constructor
+         */
+        function TimelineFormatter() {
+
+            // Format a numeric value to a string with some number of digits
+            function formatValue(value, digits) {
+                var v = value.toString(10);
+                // Pad with zeroes
+                while (v.length < digits) {
+                    v = "0" + v;
+                }
+                return v;
+            }
+
+            // Format duration to string
+            function formatDuration(duration) {
+                var days = Math.floor(duration / DAYS),
+                    hours = Math.floor(duration / HOURS) % 24,
+                    minutes = Math.floor(duration / MINUTES) % 60,
+                    seconds = Math.floor(duration / SECONDS) % 60,
+                    millis = Math.floor(duration) % 1000;
+
+                return formatValue(days, 3) + " " +
+                    formatValue(hours, 2) + ":" +
+                    formatValue(minutes, 2) + ":" +
+                    formatValue(seconds, 2) + "." +
+                    formatValue(millis, 3);
+            }
+
+            return {
+                /**
+                 * Format the provided duration.
+                 * @param {number} duration duration, in milliseconds
+                 * @returns {string} displayable representation of duration
+                 */
+                format: formatDuration
+            };
+        }
+
+        return TimelineFormatter;
+    }
+);