/*
* Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
*
* 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 org.jboss.errai.common.it.client;
import java.util.ArrayList;
import java.util.List;
import org.jboss.errai.common.client.dom.Body;
import org.jboss.errai.common.client.dom.DOMUtil;
import org.jboss.errai.common.client.dom.HTMLElement;
import org.jboss.errai.common.client.dom.Window;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Widget;
/**
* Tests utility methods in {@link DOMUtil} that deal with {@link Widget Widgets}.
*
* @author Max Barkley <mbarkley@redhat.com>
*/
public class DOMUtilWidgetTest extends GWTTestCase {
@Override
public String getModuleName() {
return "org.jboss.errai.common.it.CommonTests";
}
public void testAppendWidgetToElementPreservesWidgetEvents() throws Exception {
final Button button = new Button();
final Body body = Window.getDocument().getBody();
final List<ClickEvent> clicks = new ArrayList<>();
button.addClickHandler(evt -> clicks.add(evt));
// Control for clicking working without any parent
button.click();
assertEquals(0, clicks.size());
// Control for clicking working with an element parent and no special configuration
body.appendChild((HTMLElement) button.getElement());
button.click();
assertEquals(0, clicks.size());
DOMUtil.appendWidgetToElement(body, button);
button.click();
assertEquals(1, clicks.size());
}
public void testRemoveFromParentBreaksWidgetEventsAndDOMHierarchy() throws Exception {
final Button button = new Button();
final Body body = Window.getDocument().getBody();
final List<ClickEvent> clicks = new ArrayList<>();
button.addClickHandler(evt -> clicks.add(evt));
// Precondition
DOMUtil.appendWidgetToElement(body, button);
button.click();
assertEquals(1, clicks.size());
DOMUtil.removeFromParent(button);
assertFalse("Button should not still be attached.", button.isAttached());
assertFalse("Button should not still have element parent.", button.getElement().hasParentElement());
button.click();
assertEquals("Button clicks should not work after being removed.", 1, clicks.size());
}
}