iScroll/background.js at master · ash1215/iScroll · GitHub

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chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
    // if (request.type == "snapshot") {
    //     sendSnapshotToServer(request.payload);
    //     return true;
    // }

    routeMessage(request.type);
    return true;
});

function routeMessage(messageType) {
    switch (messageType) {
        // case "openWS":
        //     openConnection();
        //     break;
        // case "closeWS":
        //     closeConnection();
        //     break;
        case "zoom-in":
            zoomIn();
            break;
        case "zoom-out":
            zoomOut();
            break;

        //     break;
        // case "next-Tab":
        //     nextTab();
        //     break;
        default:
            chrome.tabs.getSelected(null, function(tab) {
                chrome.tabs.sendMessage(tab.id, { type: messageType, tabID: tab.id });
            });
            break;
    }
}

function zoomIn() {
    console.log('zoom in');
    chrome.tabs.getSelected(null, function(tab) {
        chrome.tabs.getZoom(tab.id, function(zoomFactor) {
            chrome.tabs.setZoom(tab.id, zoomFactor + 0.2);
        });
    });
}

function zoomOut() {
    chrome.tabs.getSelected(null, function(tab) {
        chrome.tabs.getZoom(tab.id, function(zoomFactor) {
            chrome.tabs.setZoom(tab.id, zoomFactor - 0.2);
        });
    });
}

// var ws = null;

// function closeConnection() {
//     if (ws)
//         ws.close();
// }

// function openConnection() {
//     closeConnection();
//     var url = "ws://localhost:9001";
//     ws = new WebSocket(url);
//     ws.onopen = onOpen;
//     ws.onclose = onClose;
//     ws.onmessage = onMessage;
//     ws.onerror = onError;
// }

// function onOpen() {
//     console.log("Websocket connected.");
// }

// function onClose() {
//     console.log("Websocket disconnected.");
//     ws = null;
// }

function onMessage(event) {
    console.log(event);
    routeMessage(event.data);
}

// function onError(event) {
//     alert("Websocket error.");
// }

// function sendSnapshotToServer(snapshot) {
//     if (ws)
//         ws.send(snapshot);
// }