interface框架结构firefox os 框架结构及调用机制

废话就不多说了，开始。。。

    近来学习了一些新的比拟前沿的东西，贴出来和大家分享，我想胜利是留给少数人的，抓住比拟前沿的东西学习也是一件有意义的事！！嘿嘿！！

     http://

    Gecko-js async Communicate With Gaia

    1.   DOM request 

          Once we use the refer interface, it would return a DOMRequest. Code sample: 

          (1) IDL file 

                ......

               nsIDOMDOMRequest get(in jsval name);

               ......

         (2) Gecko js file 

               ......

               Cu.import('resource://gre/modules/DOMRequestHelper.jsm');

              ......

              let request = this.createRequest();

              ......

              return request;

              ......

    2.  Register callback 

         When gaia want to monitor the change about something, it can register one callback. IDL file 

         interface XXXX : nsISupports

        {

           attribute nsIDOMEventListener xxxxx;

        };

        ......

       [scriptable, function, uuid(df31c120-ded6-11d1-bd85-00805f8ae3f4)]

       interface nsIDOMEventListener : nsISupports

       {

           void handleEvent(in nsIDOMEvent event);

       };

    Gecko-cpp async Communicate With Gaia

    1.  Callback 

         (1) IDL interface provide one callback parameter. Gaia deliver the callback function when use that idl interface. And gecko-c++ use "handleEvent" to execute the callback function. Example: IDL file 

              [scriptable, function, uuid(9cba3cdc-3a2a-44ed-a72a-4bd70b98e7d3)]

              interface nsIDOMJrdFotaCommonCb : nsISupports

             {

                  void handleEvent(in DOMString actionType,

                           in bool isSuccessed,

                           in DOMString errorType);

             };

             [scriptable, builtinclass, uuid(50f140da-78e8-449c-a688-d512e1df443a)]

             interface nsIDOMMozJrdFotaManager:nsISupports

            {

                 void pause(in nsIDOMJrdFotaCommonCb pauseCallback);

            };

        (2) CPP source / header file 

             nsCOMPtr<nsIDOMJrdFotaCommonCb> gOnCommonCb;

            gOnCommonCb->HandleEvent(actionType, isSuccess, errorType);

    2.  Register callback 

        (1) When gaia want to the switch status, it can register one callback. Gecko can dispatch this event at any time.Example: IDL file 

            [scriptable, builtinclass, uuid(2bdb02e7-ec3a-47a9-885c-0ab514566801)]

            interface nsIDOMMozSmsManager : nsIDOMEventTarget

            {

                 [implicit_jscontext] attribute jsval onsending;

            };

        (2)Add this event into GkAtomList(<project>/gecko/content/base/src/nsGkAtomList.h) 

             GK_ATOM(onsending, "onsending")

    3.  DOM request 

        Sometimes Gecko-C++ has used the gecko-js DOM request interface. In this case, C++ IDL interface can provide one DOM request interface to gaia. 

    原文出处及更多详细资料

文章结束给大家分享下程序员的一些笑话语录：

古鸽是一种搜索隐禽，在中国快绝迹了…初步的研究表明，古鸽的离去，很可能导致另一种长着熊爪，酷似古鸽，却又习性不同的猛禽类——犤毒鸟

---------------------------------
原创文章 By
interface和框架结构
---------------------------------