init

KretaWeb/Scripts/SessionHandler.js

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+var SessionHandler = (function () {
+  var sessionHandler = function () {};
+
+  var interval = 0;
+  var countDownTimer;
+  var timerSpanElement;
+  var timerUrl;
+  var warnTime = 60;
+  var refreshTime = 60;
+  var warningTrigered = false;
+
+  var warnMethod = function () {};
+  var endMethod = function () {};
+
+  sessionHandler.SetTimeSpanElement = function (element) {
+    timerSpanElement = element;
+  };
+  sessionHandler.Url = function (url) {
+    timerUrl = url;
+  };
+  sessionHandler.WarningTime = function (second) {
+    warnTime = second;
+  };
+  sessionHandler.WarnMethod = function (method) {
+    warnMethod = method;
+  };
+  sessionHandler.EndMethod = function (method) {
+    endMethod = method;
+  };
+  sessionHandler.Start = function () {
+    getRemainingTime();
+  };
+  sessionHandler.Clear = function () {
+    resetInterval();
+  };
+
+  function startSessionTimer(duration) {
+    var countDownTimer = 0;
+    var actualTime = duration;
+    resetInterval();
+    interval = setInterval(function () {
+      var minutes = parseInt(actualTime / 60, 10);
+      var seconds = parseInt(actualTime % 60, 10);
+
+      minutes = minutes < 10 ? '0' + minutes : minutes;
+      seconds = seconds < 10 ? '0' + seconds : seconds;
+      setSpanText(minutes, seconds);
+      countDownTimer = countDownTimer + 1;
+      actualTime = duration - countDownTimer;
+
+      if (actualTime < warnTime) {
+        if (!warningTrigered) {
+          getRemainingTime();
+        }
+      } else {
+        warningTrigered = false;
+      }
+
+      if (countDownTimer > refreshTime || actualTime < 1) {
+        getRemainingTime();
+      }
+    }, 1000);
+  }
+
+  function getRemainingTime() {
+    resetInterval();
+    if (typeof timerUrl !== 'undefined') {
+      AjaxHelper.AsyncPingPost(timerUrl, remainingTimeCallback);
+    }
+  }
+
+  function remainingTimeCallback(remainingSeconds) {
+    if (remainingSeconds < 1) {
+      resetInterval();
+      endMethod();
+      return;
+    }
+    if (remainingSeconds < warnTime) {
+      if (!warningTrigered) {
+        warningTrigered = true;
+        warnMethod();
+      }
+    }
+
+    startSessionTimer(remainingSeconds);
+  }
+
+  function resetInterval() {
+    clearInterval(interval);
+    interval = 0;
+  }
+
+  function setSpanText(minutes, seconds) {
+    if (timerSpanElement) {
+      if (timerSpanElement.is('p')) {
+        timerSpanElement.text('(' + minutes + ':' + seconds + ')');
+      }
+    }
+  }
+
+  return sessionHandler;
+})();