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foom19961125

新虫 (初入文坛)

应助: 0 (幼儿园)
金币: 8
帖子: 1
在线:
虫号: 6086064
注册: 2017-03-21
专业: 计算机网络

[求助] 有人能看懂这个吗

//
//  CXJSBridge.js
//  CXJSBridge
//
//  Created by Chao Xing on 12-3-1.
//  Copyright (c) 2012年 Chao Xing Technology Co., Ltd. All rights reserved.
//

(function(context){
function bridgeCall(src,callback) {
iframe = document.createElement("iframe"

;
iframe.style.display = "none";
iframe.src = src;
var cleanFn = function(state){
   console.log(state)
      try {
         iframe.parentNode.removeChild(iframe);
      } catch (error) {}
      if(callback) callback();
};
      iframe.onload = cleanFn;
document.documentElement.appendChild(iframe);
}

function JSBridge()
{
this.device="ios";
      this.callbackDict = {};
      this.notificationIdCount = 0;
      this.notificationDict = {};

      var that = this;
      context.document.addEventListener('DOMContentLoaded',function(){
         bridgeCall('jsbridge://NotificationReady',that.trigger('jsBridgeReady',{}));
      },false);
}

JSBridge.prototype = {
      constructor: JSBridge,
      //send notification to WebView
      postNotification: function(name, userInfo){
        if(this.device == 'android'){
        androidjsbridge.postNotification(name, JSON.stringify(userInfo));
        } else {
            this.notificationIdCount++;

            this.notificationDict[this.notificationIdCount] = {name:name, userInfo:userInfo};

            bridgeCall('jsbridge://PostNotificationWithId-' + this.notificationIdCount);
        }
      },
      //pop the notification in the cache
      popNotificationObject: function(notificationId){
         var result = JSON.stringify(this.notificationDict[notificationId]);
         delete this.notificationDict[notificationId];
         return result;
      },
      //trigger the js event
      trigger: function(name, userInfo) {
         if(this.callbackDict[name]){
            var callList = this.callbackDict[name];

            for(var i=0,len=callList.length;i<len;i++){
                  callList(userInfo);
            }
         }
      },
      setDevice:function(device){
this.device = device;
try{context._jsBridgeReady();}catch(e){}
},
      //bind js event
      bind: function(name, callback){
         if(!this.callbackDict[name]){
            //create the array
            this.callbackDict[name] = [];
         }
         this.callbackDict[name].push(callback);
      },
      //unbind js event
      unbind: function(name, callback){
         if(arguments.length == 1){
            delete this.callbackDict[name];
         } else if(arguments.length > 1) {
            if(this.callbackDict[name]){
                  var callList = this.callbackDict[name];

                  for(var i=0,len=callList.length;i<len;i++){
                     if(callList == callback){
                        callList.splice(i,1);
                        break;
                     }
                  }
            }
            if(this.callbackDict[name].length == 0){
                  delete this.callbackDict[name];
            }
         }
      }
};

context.jsBridge = new JSBridge();

})(window);

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