firefox 插件与 dev/panel 之间的通信

Question

我需要在 dev/panel 界面中单击按钮时调用高级 API 函数。我是这样实现的。当addon处于onReady状态时，addon发送postMessage到panelSide。

// index.js
onReady: function() {
    // in this function you can communicate
    // with the panel document
    this.postMessage("add-on-ready", [panelSide]);
    //this.postMessage("add-on-ready2", [panelSide]); // This message may be received in logic-panel.js
}

面板会将收到的消息添加到文本区域中，只需按某个按钮即可回复插件：

//logic-panel.js
window.addEventListener("message", function(event) {
    var toAddon = event.ports[0];
    toAddon.start();

    $(document).ready(function(){
        $('#log').append(event.data + '\n');
    });

    switch(event.data){
        case "add-on-ready":
            $(document).ready(function(){
                $("#inspect").click(function(){
                    toAddon.postMessage("inspect");
                });
                $("#exit").click(function(){
                    toAddon.postMessage("exit");
                });

            });
            break;

        default:
            toAddon.postMessage("event.data = " + event.data);
            alert("event.data = " + event.data);
    }
});

插件处理响应。如果按钮"inspect"被按下，那么会涉及高层API（即handleClick函数中的PageMod）：

//index.js
addonSide.onmessage = function(event) {
    console.log(event.data);
    switch(event.data){
        case "inspect":
            console.log("run inspect");
            handleClick();
            console.log("run inspect end");
            break;

        case "exit":
            console.log("push exit =(");
            break;

        default:
            MyPanel.postMessage("add-on-ready", [panelSide]);       //not work
    }
}


function handleClick() {
    console.log("xpath");
    var data = require("sdk/self").data;

    var pageMod = require('sdk/page-mod').PageMod({
        include: ['*'],
        contentScriptFile: data.url("./addonside/xpath.js"),
        onAttach: function(worker) {
            worker.on('message', function(message) {
                console.log('mouseclick: ' + message);
                ////////////////////////////////
                // this.postMessage('mouseclick: ' + message, [panelSide]); // This message not may be received in logic-panel.js
                ////////////////////////////////
            });
        }
    });
}

Q:如何在handleClick()函数中发送postMessage到面板？也许有更合适的方法来调用高级 APIs 使用 dev/panel?

Answer 1

在index.js声明var _MyPanel;

在onReady中：

onReady: function() {
    _MyPanel = this;
    _MyPanel.postMessage("add-on-ready", [panelSide]);
}

和handleClick()：

function handleClick() {
    console.log("xpath");

    var data = require("sdk/self").data;

    var pageMod = require('sdk/page-mod').PageMod({
        include: ['*'],
        contentScriptFile: data.url("./addonside/xpath.js"),
        onAttach: function(worker) {
            worker.on('message', function(message) {
                console.log('mouseclick: ' + message);
                _MyPanel.postMessage("mouseclick: " + message, [panelSide]);
            });
        }
    });
}

firefox 插件与 dev/panel 之间的通信

Communication between firefox addon and dev/panel

javascript

firefox

jquery

firefox-addon-sdk