Renamed lib to src

src/epubjs/hooks.js

@@ -0,0 +1,42 @@
+EPUBJS.Hook = function(context){
+  this.context = context || this;
+  this.hooks = [];
+};
+
+//-- Hooks allow for injecting async functions that must all complete in order before finishing 
+//   Functions must return a promise.
+
+// this.beforeDisplay = new EPUBJS.Hook();
+// this.beforeDisplay.register(function(){});
+// this.beforeDisplay.trigger(args).then(function(){});
+
+// Adds a function to be run before a hook completes
+EPUBJS.Hook.prototype.register = function(func){
+  this.hooks.push(func);
+};
+
+// Triggers a hook to run all functions
+EPUBJS.Hook.prototype.trigger = function(){
+  var length = this.hooks.length;
+  var current = 0;
+  var executing;
+  var defer = new RSVP.defer();
+  var args = arguments;
+
+  if(length) {
+
+    executing = this.hooks[current].apply(this.context, args);
+    executing.then(function(){
+      current += 1;
+      if(current < length) {
+        return this.hooks[current].apply(this.context, args);
+      }
+    }.bind(this));
+    
+  } else {
+    executing = defer.promise;
+    defer.resolve();
+  }
+
+  return executing;
+};