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package com.vaadin.tests.components.window;
import java.util.ArrayList;
import java.util.List;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractReindeerTestUI;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.Panel;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
/**
* Reproducing bug #12943 where an action on a Button or ComboBox placed at the
* bottom of a window in a scroll panel, will scroll up the parent panel.
*
* This was due to the fact that with the state confirmation notification from
* the server, the window.setVisible would be call again, and the hack that
* solved the scrollbars in a window (#11994) would cause the our bug.
*
* @author Vaadin Ltd
*/
@SuppressWarnings("serial")
public class BottomComponentScrollsUp extends AbstractReindeerTestUI {
@Override
protected void setup(VaadinRequest request) {
Button b = new Button("Open window");
addComponent(b);
b.addClickListener(event -> openWindow());
openWindow();
}
private void openWindow() {
Window w = new Window();
w.setWidth("300px");
w.setHeight("300px");
w.center();
Panel p = createPanel();
p.setSizeFull();
w.setContent(p);
addWindow(w);
}
private Panel createPanel() {
Panel p = new Panel();
VerticalLayout content = new VerticalLayout();
content.setMargin(false);
content.setSpacing(false);
p.setContent(content);
content.setHeight("500px");
List<String> items = new ArrayList<>();
items.add("1");
items.add("2");
items.add("3");
Button button = new Button("Press me");
content.addComponent(button);
content.setComponentAlignment(button, Alignment.BOTTOM_CENTER);
return p;
}
@Override
protected String getTestDescription() {
return "Interacting with a component at the bottom of scrollable panel within a subwindow scrolls up";
}
@Override
protected Integer getTicketNumber() {
return 12943;
}
}
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