41 lines
849 B
Java
41 lines
849 B
Java
/**
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*
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*/
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package org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.utility;
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/**
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Jun 23, 2016
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*/
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import com.google.gwt.user.client.Cookies;
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import com.google.gwt.user.client.Window;
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public class BrowserCloseDetector {
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private static final String COOKIE = "ckan-browser-detector-closed";
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private static BrowserCloseDetector instance;
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private BrowserCloseDetector() {
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Window.addWindowClosingHandler(new Window.ClosingHandler() {
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public void onWindowClosing(Window.ClosingEvent closingEvent) {
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Cookies.setCookie(COOKIE, "");
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}
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});
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}
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public static BrowserCloseDetector get() {
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return instance == null
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? instance = new BrowserCloseDetector() : instance;
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}
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public boolean wasClosed() {
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return Cookies.getCookie(COOKIE) == null;
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}
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}
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