mattermost-desktop/index.js

'use strict';

var remote = require('remote');

var webView = document.getElementById('mainWebview');

// Open in default browser.
webView.addEventListener('new-window', function(e) {
  require('shell').openExternal(e.url);
});

// Count unread channels.
var timer = setInterval(function() {
  webView.send('retrieveUnreadCount');
}, 1000);

var showUnreadBadge = function(unreadCount){
  switch (process.platform) {
    case 'win32':
      var window = remote.getCurrentWindow();
      if(unreadCount > 0){
        window.setOverlayIcon(__dirname + '/badge.png', 'You have unread channels.');
      }
      else{
        window.setOverlayIcon(null, '');
      }
      break;
    default:
  }
}

webView.addEventListener('ipc-message', function(event){
  switch (event.channel) {
    case 'retrieveUnreadCount':
      var unreadCount = event.args[0];
      showUnreadBadge(unreadCount);
      break;
  }
});