mapit - background.js (active and inactive tab)

background.js (active and inactive tab)

var match = 'https://calendar.google.com/calendar/render'

//http://stackoverflow.com/questions/18162644/adding-a-listener-that-fires-whenever-the-user-changes-tab
//When Google Calendar browser tab is active again!!!
chrome.tabs.onActivated.addListener(function(activeInfo) {
    chrome.tabs.get(activeInfo.tabId, function (tab) {
        //chrome.tabs.sendMessage(activeInfo.tabId, {action: "tabactive", consolelog: tab.url.substring(0, match.length)},function(response) {});
        if (tab.url.substring(0, match.length) === match) {
          chrome.tabs.sendMessage(activeInfo.tabId, {action: "start"}, function(response) {}); 
        }
    });
});