Use native notification center for Slack in fluid.app

userscript.js

var clickOverrides = function(){
  // Automatically mark ALL as read and scroll to it
  // when clicking on a channel (stared or normal)
  $('#channel-list, #starred-list').on('click',function(){
    TS.ui.forceMarkAllRead();
    TS.ui.scrollMsgsSoFirstUnreadMsgIsInView();
  });

};

var onMessageClick = function(){
  TS.ui.forceMarkAllRead();
  TS.ui.scrollMsgsSoFirstUnreadMsgIsInView();
};

// Setup and use notification center! Yay.
function wkNotify(title,content,clickCallBack) {
  if (!window.Notification) {
    console.log('not supported');
    return;
  }

  if (Notification.permission === 'denied') {
    console.log("Can't show notification here");

  } else if (Notification.permission === 'default') {
    // Get permission
    Notification.requestPermission(function() {
        notify();
    });

  } else if (Notification.permission === 'granted') {
    var wkNotification = window.webkitNotifications.createNotification(null, title, content);
    if(typeof clickCallBack === "function"){
      wkNotification.onclick = clickCallBack;
    }

    // Show that thing!
    try {wkNotification.show();}
      catch (e) {alert('error: '+e);}
    }
}


// override the growl and use notification center
// wait 10 seconds for everything to load, then do this
setTimeout(function(){
  clickOverrides();
  wkNotify("Loaded custom scripts","");
  TS.ui.growls.show = function(title, text, a,b,c){
    wkNotify(title,text,onMessageClick);
  };
},10000);

are you still using this? I'm pretty upset with the native slack app performance.

how do I use this?

is it posible that u made the same but for gmail in fluid app please ?