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/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.vaadin.tests;
import java.util.ArrayList;
import java.util.Iterator;
import com.vaadin.terminal.ExternalResource;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Link;
import com.vaadin.ui.Select;
/**
*
* This Component contains some simple test to see that component updates its
* contents propertly.
*
* @author IT Mill Ltd.
*/
public class TestForGridLayoutChildComponentRendering extends CustomComponent {
private final GridLayout main = new GridLayout(2, 3);
public TestForGridLayoutChildComponentRendering() {
setCompositionRoot(main);
createNewView();
}
public void createNewView() {
main.removeAllComponents();
main.addComponent(new Label("SDFGFHFHGJGFDSDSSSGFDD"));
final Link l = new Link();
l.setCaption("Siirry ITMILLIIN");
l.setResource(new ExternalResource("http://www.itmill.com/"));
l.setTargetHeight(200);
l.setTargetWidth(500);
l.setTargetBorder(Link.TARGET_BORDER_MINIMAL);
main.addComponent(l);
final Select se = new Select("Tästä valitaan");
se.setCaption("Whattaa select");
se.addItem("valinta1");
se.addItem("Valinta 2");
main.addComponent(se, 0, 1, 1, 1);
Button b = new Button("refresh view", this, "createNewView");
main.addComponent(b);
b = new Button("reorder view", this, "randomReorder");
main.addComponent(b);
b = new Button("remove randomly one component", this,
"removeRandomComponent");
main.addComponent(b);
}
public void randomReorder() {
final Iterator it = main.getComponentIterator();
final ArrayList components = new ArrayList();
while (it.hasNext()) {
components.add(it.next());
}
main.removeAllComponents();
final int size = components.size();
final int colspanIndex = ((int) (Math.random() * size) / 2) * 2 + 2;
for (int i = components.size(); i > 0; i--) {
final int index = (int) (Math.random() * i);
if (i == colspanIndex) {
main.addComponent((Component) components.get(index), 0,
(size - i) / 2, 1, (size - i) / 2);
} else {
main.addComponent((Component) components.get(index));
}
components.remove(index);
}
}
public void removeRandomComponent() {
final Iterator it = main.getComponentIterator();
final ArrayList components = new ArrayList();
while (it.hasNext()) {
components.add(it.next());
}
final int size = components.size();
final int index = (int) (Math.random() * size);
main.removeComponent((Component) components.get(index));
}
}
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