clearTimeout, setInterval, clearInterval for iOS

globals/globals.ios.ts

@@ -1,7 +1,32 @@
 /**
   * iOS specific global functions implementation.
   */
-export function setTimeout(callback: Function, milliseconds: number): void {
+var timeoutCallbacks = {};
+
+function createTimerAndGetId(callback: Function, milliseconds: number, shouldRepeat: boolean): number {
+    var id = new Date().getUTCMilliseconds();
+
     var target = Foundation.NSObject.extends({ tick: function (timer) { callback(); } }, { exposedMethods: { "tick:": "v@:@" } });
-    Foundation.NSTimer.scheduledTimerWithTimeIntervalTargetSelectorUserInfoRepeats(milliseconds / 1000, new target(), "tick:", null, false);
+    var timer = Foundation.NSTimer.scheduledTimerWithTimeIntervalTargetSelectorUserInfoRepeats(milliseconds / 1000, new target(), "tick:", null, shouldRepeat);
+
+    if (!timeoutCallbacks[id]) {
+        timeoutCallbacks[id] = timer;
+    }
+
+    return id;
+}
+
+export function setTimeout(callback: Function, milliseconds: number): number {
+    return createTimerAndGetId(callback, milliseconds, false);
+}
+
+export function clearTimeout(id: number): void {
+    if (timeoutCallbacks[id]) {
+        timeoutCallbacks[id].invalidate();
+        timeoutCallbacks[id] = null;
+    }
+}
+
+export function setInterval(callback: Function, milliseconds: number): number {
+    return createTimerAndGetId(callback, milliseconds, true);
 }