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- /*
- * Copyright 2000-2016 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.vaadin.tests.application;
-
- import com.vaadin.server.VaadinRequest;
- import com.vaadin.tests.components.AbstractTestUIWithLog;
- import com.vaadin.ui.Button;
- import com.vaadin.ui.JavaScript;
-
- public class ConfirmBrowserTabClose extends AbstractTestUIWithLog {
-
- @Override
- protected void setup(VaadinRequest request) {
- // To test the behavior, do
- // 1. Open the test in the browser
- // 2. Close the browser tab/window
- // 3. Choose to stay on the page after all
- // 4. Click the button
- // There should be no error
- Button b = new Button("Say hello", event -> log("Hello"));
- addComponent(b);
- JavaScript
- .eval("window.addEventListener('beforeunload', function (e) {"
- + "var confirmationMessage = 'Please stay!';"
- + "e.returnValue = confirmationMessage;"
- + "return confirmationMessage;" + "});");
- }
- }
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