define(function (require, exports, module) {
	var EventObject = require("EventObject");

	var Connector = function () {
		var token = 0;
		var callback = {};

		this.send = function (type, data, cb, target) {
			/// <summary>发送消息到后台</summary>

			var args = { type: type, data: data, token: token++ };
			if (cb)
				callback[args.token] = { func: cb, target: target, arg: args };
			window.postMessage({ command: "ccontentScriptConnection", data: args });
		};


		//回调
		window.addEventListener("message", function (event) {
			if (!event.data || !event.data.command || event.data.command !== "contentScriptConnection")
				return;

			var data = event.data;
			var result = data.result;
			var destToken = data.token;

			if (callback[destToken]) {
				var cb = callback[destToken];
				delete callback[destToken];
				if (cb.target) {
					cb.func.apply(cb.target, [result, cb.arg]);
				} else {
					cb.func(result, cb.arg);
				}
			}
		});
	};

	Connector.prototype = Object.create(EventObject);
	Connector.constructor = Connector;

	return Object.create(Connector);
});