chrome-extension

var port, chromejsPort;

handleMessage = function(msg) {
    console.log("got data from native screen app...");
    //console.log("data=" + msg);
    chromejsPort.postMessage(msg); //sending data generated from screen to ChromeApp.js
};

externalMessageHandler = function(jsPort) {
    console.log("inside externalMessageHandler ...");

    chromejsPort = jsPort;
    chromejsPort.onMessage.addListener(function(message) {
        console.log("chromejsPort-addListener Message: " + message + " and method: " + message.method);;
        if (message.method == 'startScreenService') {
            port = chrome.runtime.connectNative('com.windows.screen');

            if(chrome.runtime.lastError) {
                console.log("ERROR: " + chrome.runtime.lastError.message);
                chromejsPort.postMessage('{"result":"failure"}');
            }
            port.onMessage.addListener(handleMessage);
            console.log("ext to native-app port created successfully..");
            chromejsPort.postMessage('{"result":"success"}');
        }
    });

    return true;
};

chrome.runtime.onConnectExternal.addListener(externalMessageHandler);