Crawler, second version

lib/action_platform.js

Index: lib/action_platform.js
===================================================================
new file mode 100644
--- /dev/null
+++ b/lib/action_platform.js
@@ -0,0 +1,77 @@
+/**
+ * @fileOverview A platform-specific primitive set for the module action.js. This version is for Firefox extensions.
+ */
+
+/**
+ * @namespace
+ */
+Action_Platform = {};
+
+/**
+ * An instance of the NS thread manager.
+ * @type {nsIThreadManager}
+ */
+Action_Platform.thread_manager = Cc["@mozilla.org/thread-manager;1"].createInstance( Ci.nsIThreadManager );
+
+/**
+ * Dispatch a function into the next JavaScript thread.
+ * @param {function} f
+ */
+Action_Platform.dispatch = function( f )
+{
+  Action_Platform.thread_manager.currentThread.dispatch(
+    {run: f},
+    Ci.nsIEventTarget.DISPATCH_NORMAL
+  );
+};
+
+/**
+ * Timer class for the NS timer.
+ * @constructor
+ */
+Action_Platform.Timer = function()
+{
+  /**
+   * An instance of the NS timer, which
+   * @type {*}
+   */
+  this.timer = Cc["@mozilla.org/timer;1"].createInstance( Ci.nsITimer )
+};
+
+/**
+ * @param {function} f
+ * @param {number} duration
+ */
+Action_Platform.Timer.prototype.set = function( f, duration )
+{
+  this.timer.initWithCallback( f, duration, Ci.nsITimer.TYPE_ONE_SHOT )
+};
+
+Action_Platform.Timer.prototype.clear = function()
+{
+  this.timer.cancel();
+};
+
+/**
+ * Set the timer.
+ * @param {function} f
+ * @param {number} duration
+ * @return {Action_Platform.Timer}
+ */
+Action_Platform.set_timer = function( f, duration )
+{
+  var t = new Action_Platform.Timer();
+  t.set( f, duration );
+  return t;
+};
+
+/**
+ * Clear the timer.
+ * @param {Action_Platform.Timer} id
+ */
+Action_Platform.clear_timer = function( id )
+{
+  id.clear();
+};
+
+exports.Action_Platform = Action_Platform;