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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,198 +1,109 @@ | ||
| define("arale/messenger/1.0.2/messenger-debug", [ "$-debug" ], function(require, exports, module) { | ||
| var $ = require("$-debug"); | ||
| function Messenger(config) { | ||
| var win = config.target || parent; | ||
| try { | ||
| if (!$.isWindow(win)) { | ||
| win = $(win).get(0); | ||
| if (win && win.tagName === "IFRAME") { | ||
| win = win.contentWindow; | ||
| } | ||
| } | ||
| } catch (e) {} | ||
| // save the pointer to the window which is interacting with | ||
| this.win = win; | ||
| this.onmessage = config.onmessage || function() {}; | ||
| this.init(); | ||
| } | ||
| // postMessage API is supported | ||
| Messenger.prototype.init = function() { | ||
| var self = this; | ||
| this._receiver = function(event) { | ||
| // Some IE-component browsers fails if you compare | ||
| // window objects with '===' or '!=='. | ||
| if (event.source != self.win) return; | ||
| (self.onmessage || function() {}).call(self, event.data); | ||
| }; | ||
| if (window.addEventListener) window.addEventListener("message", this._receiver, false); else if (window.attachEvent) window.attachEvent("onmessage", this._receiver); | ||
| }; | ||
| Messenger.prototype.send = function(data) { | ||
| this.win.postMessage(data, "*"); | ||
| }; | ||
| // in IE, postMessage API is not supported | ||
| if (!window.postMessage && window.attachEvent) { | ||
| // redefine the init method | ||
| Messenger.prototype.init = function() { | ||
| var isSameOrigin = false; | ||
| // test if the two document is same origin | ||
| try { | ||
| isSameOrigin = !!this.win.location.href; | ||
| } catch (ex) {} | ||
| if (isSameOrigin) { | ||
| this.send = this.sendForSameOrigin; | ||
| this.initForSameOrigin(); | ||
| return; | ||
| define("arale/messenger/2.0.0/messenger-debug", [], function(require, exports, module) { | ||
| /** | ||
| * __ ___ | ||
| * / |/ /___ _____ _____ ___ ____ ____ _ ___ _____ | ||
| * / /|_/ // _ \ / ___// ___// _ \ / __ \ / __ `// _ \ / ___/ | ||
| * / / / // __/(__ )(__ )/ __// / / // /_/ // __// / | ||
| * /_/ /_/ \___//____//____/ \___//_/ /_/ \__, / \___//_/ | ||
| * /____/ | ||
| * | ||
| * @description MessengerJS, a common cross-document communicate solution. | ||
| * @author biqing kwok | ||
| * @version 2.0 | ||
| * @license release under MIT license | ||
| */ | ||
| module.exports = function() { | ||
| // 消息前缀, 建议使用自己的项目名, 避免多项目之间的冲突 | ||
| var prefix = "arale-messenger", supportPostMessage = "postMessage" in window; | ||
| // Target 类, 消息对象 | ||
| function Target(target, name) { | ||
| var errMsg = ""; | ||
| if (arguments.length < 2) { | ||
| errMsg = "target error - target and name are both required"; | ||
| } else if (typeof target != "object") { | ||
| errMsg = "target error - target itself must be window object"; | ||
| } else if (typeof name != "string") { | ||
| errMsg = "target error - target name must be string type"; | ||
| } | ||
| // different origin case | ||
| // init the message queue, which can guarantee the messages won't be lost | ||
| this.queue = []; | ||
| if (window.parent == this.win) { | ||
| this.initForParent(); | ||
| } else { | ||
| this.initForFrame(); | ||
| if (errMsg) { | ||
| throw new Error(errMsg); | ||
| } | ||
| }; | ||
| Messenger.prototype.initForSameOrigin = function() { | ||
| var self = this; | ||
| this._dataavailable = function(event) { | ||
| if (!event.eventType || event.eventType !== "message" || event.eventSource != self.win) return; | ||
| (self.onmessage || function() {}).call(self, event.eventData); | ||
| this.target = target; | ||
| this.name = name; | ||
| } | ||
| // 往 target 发送消息, 出于安全考虑, 发送消息会带上前缀 | ||
| if (supportPostMessage) { | ||
| // IE8+ 以及现代浏览器支持 | ||
| Target.prototype.send = function(msg) { | ||
| this.target.postMessage(prefix + msg, "*"); | ||
| }; | ||
| document.attachEvent("ondataavailable", this._dataavailable); | ||
| }; | ||
| Messenger.prototype.sendForSameOrigin = function(data) { | ||
| var self = this; | ||
| setTimeout(function() { | ||
| var event = self.win.document.createEventObject(); | ||
| event.eventType = "message"; | ||
| event.eventSource = window; | ||
| event.eventData = data; | ||
| self.win.document.fireEvent("ondataavailable", event); | ||
| }); | ||
| }; | ||
| // create two iframe in iframe page | ||
| Messenger.prototype.initForParent = function() { | ||
| var fragment = document.createDocumentFragment(); | ||
| var style = "width: 1px; height: 1px; position: absolute; left: -999px; top: -999px;"; | ||
| var senderFrame = document.createElement("iframe"); | ||
| senderFrame.src = 'javascript:""'; | ||
| senderFrame.style.cssText = style; | ||
| fragment.appendChild(senderFrame); | ||
| var receiverFrame = document.createElement("iframe"); | ||
| receiverFrame.src = 'javascript:""'; | ||
| receiverFrame.style.cssText = style; | ||
| fragment.appendChild(receiverFrame); | ||
| document.body.insertBefore(fragment, document.body.firstChild); | ||
| this.senderWin = senderFrame.contentWindow; | ||
| this.receiverWin = receiverFrame.contentWindow; | ||
| this.startReceive(); | ||
| // for destroy | ||
| this._fragment = fragment; | ||
| }; | ||
| // parent page wait the messenger iframe is ready | ||
| Messenger.prototype.initForFrame = function() { | ||
| this.senderWin = null; | ||
| this.receiverWin = null; | ||
| var self = this; | ||
| this.timerId = setInterval(function() { | ||
| self.waitForFrame(); | ||
| }, 50); | ||
| }; | ||
| // parent page polling the messenger iframe | ||
| // when all is ready, start trying to receive message | ||
| Messenger.prototype.waitForFrame = function() { | ||
| var senderWin; | ||
| var receiverWin; | ||
| try { | ||
| senderWin = this.win[1]; | ||
| receiverWin = this.win[0]; | ||
| } catch (ex) {} | ||
| if (!senderWin || !receiverWin) return; | ||
| clearInterval(this.timerId); | ||
| this.senderWin = senderWin; | ||
| this.receiverWin = receiverWin; | ||
| if (this.queue.length) this.flush(); | ||
| this.startReceive(); | ||
| }; | ||
| // polling the messenger iframe's window.name | ||
| Messenger.prototype.startReceive = function() { | ||
| var self = this; | ||
| this.timerId = setInterval(function() { | ||
| self.tryReceive(); | ||
| }, 50); | ||
| } else { | ||
| // 兼容IE 6/7 | ||
| Target.prototype.send = function(msg) { | ||
| var targetFunc = window.navigator[prefix + this.name]; | ||
| if (typeof targetFunc == "function") { | ||
| targetFunc(prefix + msg, window); | ||
| } else { | ||
| throw new Error("target callback function is not defined"); | ||
| } | ||
| }; | ||
| } | ||
| // 信使类 | ||
| // 创建Messenger实例时指定, 必须指定Messenger的名字, (可选)指定项目名, 以避免Mashup类应用中的冲突 | ||
| // !注意: 父子页面中projectName必须保持一致, 否则无法匹配 | ||
| function Messenger(messengerName, projectName) { | ||
| this.targets = {}; | ||
| this.name = messengerName; | ||
| this.listenFunc = []; | ||
| prefix = projectName || prefix; | ||
| this.initListen(); | ||
| } | ||
| // 添加一个消息对象 | ||
| Messenger.prototype.addTarget = function(target, name) { | ||
| var targetObj = new Target(target, name); | ||
| this.targets[name] = targetObj; | ||
| }; | ||
| Messenger.prototype.tryReceive = function() { | ||
| try { | ||
| // If we can access name, we have already got the data. | ||
| this.receiverWin.name; | ||
| return; | ||
| } catch (ex) {} | ||
| // if the name property can not be accessed, try to change the messenger iframe's location to 'about blank' | ||
| this.receiverWin.location.replace('javascript:"";'); | ||
| // We have to delay receiving to avoid access-denied error. | ||
| // 初始化消息监听 | ||
| Messenger.prototype.initListen = function() { | ||
| var self = this; | ||
| setTimeout(function() { | ||
| self.receive(); | ||
| }, 0); | ||
| var generalCallback = function(msg) { | ||
| if (typeof msg == "object" && msg.data) { | ||
| msg = msg.data; | ||
| } | ||
| // 剥离消息前缀 | ||
| msg = msg.slice(prefix.length); | ||
| for (var i = 0; i < self.listenFunc.length; i++) { | ||
| self.listenFunc[i](msg); | ||
| } | ||
| }; | ||
| if (supportPostMessage) { | ||
| if ("addEventListener" in document) { | ||
| window.addEventListener("message", generalCallback, false); | ||
| } else if ("attachEvent" in document) { | ||
| window.attachEvent("onmessage", generalCallback); | ||
| } | ||
| } else { | ||
| // 兼容IE 6/7 | ||
| window.navigator[prefix + this.name] = generalCallback; | ||
| } | ||
| }; | ||
| // recieve and parse the data, call the listener function | ||
| Messenger.prototype.receive = function() { | ||
| var rawData = null; | ||
| try { | ||
| rawData = this.receiverWin.name; | ||
| } catch (ex) {} | ||
| if (!rawData) return; | ||
| this.receiverWin.name = ""; | ||
| var self = this; | ||
| var dataList = rawData.substring(1).split("|"); | ||
| for (var i = 0; i < dataList.length; i++) (function() { | ||
| var data = decodeURIComponent(dataList[i]); | ||
| setTimeout(function() { | ||
| (self.onmessage || function() {}).call(self, data); | ||
| }, 0); | ||
| })(); | ||
| // 监听消息 | ||
| Messenger.prototype.listen = function(callback) { | ||
| this.listenFunc.push(callback); | ||
| }; | ||
| // send data via push the data into the message queue | ||
| Messenger.prototype.send = function(data) { | ||
| this.queue.push(data); | ||
| if (!this.senderWin) return; | ||
| this.flush(); | ||
| // 注销监听 | ||
| Messenger.prototype.clear = function() { | ||
| this.listenFunc = []; | ||
| }; | ||
| Messenger.prototype.flush = function() { | ||
| var dataList = []; | ||
| for (var i = 0; i < this.queue.length; i++) dataList[i] = encodeURIComponent(this.queue[i]); | ||
| var encodedData = "|" + dataList.join("|"); | ||
| try { | ||
| this.senderWin.name += encodedData; | ||
| this.queue.length = 0; | ||
| } catch (ex) { | ||
| this.senderWin.location.replace("about:blank"); | ||
| var self = this; | ||
| setTimeout(function() { | ||
| self.flush(); | ||
| }, 0); | ||
| // 广播消息 | ||
| Messenger.prototype.send = function(msg) { | ||
| var targets = this.targets, target; | ||
| for (target in targets) { | ||
| if (targets.hasOwnProperty(target)) { | ||
| targets[target].send(msg); | ||
| } | ||
| } | ||
| }; | ||
| } | ||
| Messenger.prototype.destroy = function() { | ||
| // 删除定时器 | ||
| clearInterval(this.timerId); | ||
| // 解除绑定事件 | ||
| if (this._receiver) { | ||
| if (window.removeEventListener) window.removeEventListener("message", this._receiver, false); else if (window.detachEvent) window.detachEvent("onmessage", this._receiver); | ||
| } | ||
| // 解除绑定事件 ie | ||
| if (document.detachEvent && this._dataavailable) { | ||
| document.detachEvent("ondataavailable", this._dataavailable); | ||
| } | ||
| // 删除fragment | ||
| this._fragment && document.body.removeChild(this._fragment); | ||
| // 删除实例属性 | ||
| for (var p in this) { | ||
| if (this.hasOwnProperty(p)) { | ||
| delete this[p]; | ||
| } | ||
| } | ||
| }; | ||
| module.exports = Messenger; | ||
| }); | ||
| return Messenger; | ||
| }(); | ||
| }); |
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