third_party/WebKit/LayoutTests/svg/carto.net/resources/timer.js

   1 // source/credits: "Algorithm": http://www.codingforums.com/showthread.php?s=&threadid=10531
   2 // The constructor should be called with
   3 // the parent object (optional, defaults to window).
   4
   5 function Timer(){
   6     this.obj = (arguments.length)?arguments[0]:window;
   7     return this;
   8 }
   9
  10 // The set functions should be called with:
  11 // - The name of the object method (as a string) (required)
  12 // - The millisecond delay (required)
  13 // - Any number of extra arguments, which will all be
  14 //   passed to the method when it is evaluated.
  15
  16 Timer.prototype.setInterval = function(func, msec){
  17     var i = Timer.getNew();
  18     var t = Timer.buildCall(this.obj, i, arguments);
  19     Timer.set[i].timer = window.setInterval(t,msec);
  20     return i;
  21 }
  22 Timer.prototype.setTimeout = function(func, msec){
  23     var i = Timer.getNew();
  24     Timer.buildCall(this.obj, i, arguments);
  25     Timer.set[i].timer = window.setTimeout("Timer.callOnce("+i+");",msec);
  26     return i;
  27 }
  28
  29 // The clear functions should be called with
  30 // the return value from the equivalent set function.
  31
  32 Timer.prototype.clearInterval = function(i){
  33     if(!Timer.set[i]) return;
  34     window.clearInterval(Timer.set[i].timer);
  35     Timer.set[i] = null;
  36 }
  37 Timer.prototype.clearTimeout = function(i){
  38     if(!Timer.set[i]) return;
  39     window.clearTimeout(Timer.set[i].timer);
  40     Timer.set[i] = null;
  41 }
  42
  43 // Private data
  44
  45 Timer.set = new Array();
  46 Timer.buildCall = function(obj, i, args){
  47     var t = "";
  48     Timer.set[i] = new Array();
  49     if(obj != window){
  50         Timer.set[i].obj = obj;
  51         t = "Timer.set["+i+"].obj.";
  52     }
  53     t += args[0]+"(";
  54     if(args.length > 2){
  55         Timer.set[i][0] = args[2];
  56         t += "Timer.set["+i+"][0]";
  57         for(var j=1; (j+2)<args.length; j++){
  58             Timer.set[i][j] = args[j+2];
  59             t += ", Timer.set["+i+"]["+j+"]";
  60     }}
  61     t += ");";
  62     Timer.set[i].call = t;
  63     return t;
  64 }
  65 Timer.callOnce = function(i){
  66     if(!Timer.set[i]) return;
  67     eval(Timer.set[i].call);
  68     Timer.set[i] = null;
  69 }
  70 Timer.getNew = function(){
  71     var i = 0;
  72     while(Timer.set[i]) i++;
  73     return i;
  74 }