加一个worker方法

src/core/worker.js

@@ -0,0 +1,35 @@
+!(function () {
+    BI.initWorker = function () {
+        function createWatcher (model, keyOrFn, cb, options) {
+            options = options || {};
+            return Fix.watch(model, keyOrFn, cb, BI.extend(options, {
+                store: model
+            }));
+        }
+
+        var models = {};
+        addEventListener("message", function (e) {
+            var data = e.data;
+            switch (data.eventType) {
+                case "action":
+                    models[data.name][data.action].apply(models[data.name], data.args);
+                    break;
+                default:
+                    var store = models[data.name] = BI.Models.getModel(data.type, data.options);
+                    for (var i = 0, len = data.watches.length; i < len; i++) {
+                        var key = data.watches[i];
+                        createWatcher(store.model, key, function () {
+                            postMessage(BI.extend({}, data, {
+                                eventType: "watch",
+                                currentWatchType: key
+                            }, {args: [].slice.call(arguments, 0, 2)}));
+                        });
+                    }
+                    postMessage(BI.extend({
+                        eventType: "create"
+                    }, data, {msg: store.model}));
+                    break;
+            }
+        }, false);
+    };
+}());