1 files changed, 46 insertions, 0 deletions
diff --git a/src/Browser.js b/src/Browser.js
new file mode 100644
index 00000000..bdf57386
--- /dev/null
+++ b/src/Browser.js
@@ -0,0 +1,46 @@
+
+//////////////////////////////
+// Browser
+//////////////////////////////
+
+function Browser(location) {
+  this.location = location;
+  this.delay = 25;
+  this.setTimeout = function(fn, delay) {
+   window.setTimeout(fn, delay);
+  };
+  this.expectedUrl = location.href;
+  this.listeners = [];
+}
+
+Browser.prototype = {
+  watchUrl: function(fn){
+   this.listeners.push(fn);
+  },
+
+  startUrlWatcher: function() {
+   var self = this;
+   (function pull () {
+     if (self.expectedUrl !== self.location.href) {
+       foreach(self.listeners, function(listener){
+         listener(self.location.href);
+       });
+       self.expectedUrl = self.location.href;
+     }
+     self.setTimeout(pull, self.delay);
+   })();
+  },
+
+  setUrl: function(url) {
+   var existingURL = this.location.href;
+   if (!existingURL.match(/#/))
+     existingURL += '#';
+   if (existingURL != url)
+     this.location.href = url;
+   this.existingURL = url;
+  },
+
+  getUrl: function() {
+   return this.location.href;
+  }
+};