c9-core/plugins/c9.cli.bridge/bridge.js

define(function(require, exports, module) {
    main.consumes = ["c9", "Plugin", "ext"];
    main.provides = ["bridge"];
    return main;

    function main(options, imports, register) {
        var Plugin = imports.Plugin;
        var c9 = imports.c9;
        var ext = imports.ext;
        
        var JSONStream = require("./json-stream");

        /***** Initialization *****/

        var plugin = new Plugin("Ajax.org", main.consumes);
        var emit = plugin.getEmitter();

        var ENABLED = options.startBridge !== false;

        var stream, api;

        function load(){
            if (!ENABLED) return;

            ext.loadRemotePlugin("bridge", {
                code: require("text!./bridge-service.js"),
                redefine: true
            }, function(err, remote) {
                if (err)
                    return console.error(err);

                api = remote;

                api.connect(function(err, meta) {
                    if (err) 
                        return console.error(err); // this should never happen

                    stream = new JSONStream(meta.stream);
                    
                    stream.on("error", function(err) {
                        console.error(err);
                    });
                        
                    stream.on("data", function(payload) {
                        var response = emit("message", { message: payload.message });
                        
                        stream.write({
                            id: payload.id,
                            message: response
                        });
                    });

                    stream.on("close", function(){
                        load();
                    });
                });
            });

            window.addEventListener("unload", function(){
                api && api.disconnect();
            });
        }
        
        function write(json){
            if (!stream) return false;
            stream.write(JSON.stringify(json));
            return true;
        }
        
        /***** Methods *****/

        plugin.on("load", function(){
            c9.on("connect", load, plugin);
        });

        plugin.on("unload", function(){
            api && api.disconnect();
            stream = null;
            api = null;
        });

        /***** Register and define API *****/

        /**
         * Bridge To Communicate from CLI to IDE
         **/
        plugin.freezePublicAPI({ 
            /**
             * 
             */
            write: write
        });

        register(null, {
            bridge: plugin
        });
    }
});