Chrome Extension - Dynamic Right-Click Menu

Question

I am trying to create an option in the right-click menu that is dynamic based on the user\'s action. If the user selects some text, then right-clicks, the option will say \"Disp

Answer 1

You cant grey an item out...Chrome has gone to a bit of effort to only make context menu items appear when its relevant which is why i guess theres no grey out option. Your way goes against what Chrome have tried to implement and I think you really should rethink the way you go about this.
Saying that, you can use the chrome.contextMenus.update to change a menu item.
The following code is about as good as your going to get it your way (seriously, rethink this idea)....

function selectedTrueOnClick(info, tab) {
    chrome.tabs.sendRequest(
    tab.id, {
        callFunction: "displaySidebar",
        info: info
    }, function(response) {
        console.log(response);
    });
}

function selectedFalseOnClick(info, tab) {
    //
}

var contextMenuID = chrome.contextMenus.create({
    title: "Select some text",
    contexts: ["all"],
    onclick: selectedFalseOnClick
});

function contextMenuUpdate(selected) {
    if (selected) chrome.contextMenus.update(contextMenuID, {
        title: 'You selected "%s"',
        contexts: ["all"],
        onclick: selectedTrueOnClick
    });
    else chrome.contextMenus.update(contextMenuID, {
        title: "Select some text",
        contexts: ["all"],
        onclick: selectedTrueOnClick
    });
}

contextMenuUpdate(false);