tests/nacl_js_lib.js

   1 // JavaScript Library for Nacl Tests and Demos
   2
   3 function NaclLib(modules, statusfield, num_retries) {
   4    this.modules_ = modules;
   5    this.statusfield_ = statusfield;
   6    this.status_ = "WAIT";
   7    this.message_ = "";
   8    this.handler_ = null;
   9    this.retries_ = num_retries;
  10 };
  11
  12
  13 NaclLib.prototype.getStatus = function() {
  14   return this.status_;
  15 };
  16
  17
  18 NaclLib.prototype.getMessage = function() {
  19   return this.message_;
  20 };
  21
  22
  23 NaclLib.prototype.cleanUp = function() {
  24   if (this.handler_) {
  25      clearInterval(this._handler);
  26   }
  27 };
  28
  29
  30 NaclLib.prototype.setStatus = function() {
  31   this.statusfield_.innerHTML =
  32       this.status_ + ": " + this.message_;
  33 };
  34
  35
  36 NaclLib.prototype.setStatusWait = function(message) {
  37   this.status_ = "WAIT";
  38   this.message_ = message;
  39   this.setStatus()
  40 };
  41
  42
  43 NaclLib.prototype.setStatusError = function(message) {
  44   this.status_ = "ERROR";
  45   this.message_ = message;
  46   this.setStatus()
  47 };
  48
  49
  50 NaclLib.prototype.setStatusSuccess = function(message) {
  51   this.status_ = "SUCCESS";
  52   this.message_ = message;
  53   this.setStatus()
  54 };
  55
  56
  57 NaclLib.prototype.numModulesReady = function(modules) {
  58   var count = 0;
  59   for (var i = 0; i < modules.length; i++) {
  60     if (modules[i].__moduleReady == 1) {
  61       count += 1;
  62     }
  63   }
  64   return count;
  65 };
  66
  67
  68 NaclLib.prototype.areTherePluginProblems = function(modules) {
  69   for (var i = 0; i < modules.length; i++) {
  70     if (modules[i].__moduleReady == undefined) return 1;
  71   }
  72   return 0;
  73 };
  74
  75
  76 NaclLib.prototype.checkModuleReadiness = function() {
  77   var num_ready = this.numModulesReady(this.modules_);
  78
  79   this.setStatusWait("" + this.retries_ + ": Loaded " +
  80                      num_ready + "/" + this.modules_.length + " modules");
  81
  82   if (this.modules_.length == num_ready) {
  83     this.cleanUp();
  84     var result;
  85     try {
  86       result = this.test();
  87     } catch(e) {
  88       this.setStatusError(e);
  89       return;
  90     }
  91
  92     if (result == "") {
  93       this.setStatusSuccess("");
  94     } else {
  95       this.setStatusError(result);
  96     }
  97     return;
  98   }
  99
 100   if (this.areTherePluginProblems(this.modules_)) {
 101     this.cleanUp();
 102     this.setStatusError("The Native Client plugin was unable to load");
 103     return;
 104   }
 105
 106   if (this.retries_ == 0) {
 107     this.cleanUp();
 108     this.setStatusError("The Native Client modules are loading too slowly");
 109     return;
 110   }
 111
 112   this.retries_ -= 1;
 113 };
 114
 115
 116 // Workaround for JS inconsistent scoping behavior
 117 function wrapperForCheckModuleReadiness(that) {
 118   that.checkModuleReadiness();
 119 }
 120
 121
 122 NaclLib.prototype.waitForModulesAndRunTests = function() {
 123   this.handler_ = setInterval(wrapperForCheckModuleReadiness, 100, this);
 124 };