1.0life michael bloghttps://lifemichael.com/enHaim Michaelhttps://lifemichael.com/en/author/lifemichaelblog/rich600338<blockquote class="wp-embedded-content" data-secret="Aj3INoATmX"><a href="https://lifemichael.com/en/vaadin-application-pro/">Vaadin Application <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73>PRO</a></font></a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://lifemichael.com/en/vaadin-application-pro/embed/#?secret=Aj3INoATmX" width="600" height="338" title="“Vaadin Application <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73>PRO</a></font>” — life michael blog" data-secret="Aj3INoATmX" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,l){"use strict";var e=!1,o=!1;if(l.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=0;o<n.length;o++)n[o].style.display="none";for(o=0;o<i.length;o++)if(r=i[o],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=l.createElement("a"),a=l.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,a.host===s.host)if(l.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=l.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> The Application class is the entry point. The object instantiated from that class is responsible for creating and managing the user interface components. Each and every user session has its own Application object. The fourth topic of my Vaadin Basics course focuses on this class and covers various related issues that become relevant when developing […]