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package com.vaadin.tests;
import java.util.Date;
import com.vaadin.shared.ui.ContentMode;
import com.vaadin.ui.AbstractOrderedLayout;
import com.vaadin.ui.Button;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
public class PerformanceTestLabelsAndOrderedLayouts extends CustomComponent {
private final AbstractOrderedLayout main;
private final AbstractOrderedLayout testContainer = new VerticalLayout();
private Date startTime;
private final Label result;
private static final String DESCRIPTION = "Simple test that renders n labels into ordered layout.";
private static final int INITIAL_COMPONENTS = 1000;
public PerformanceTestLabelsAndOrderedLayouts() {
main = new VerticalLayout();
setCompositionRoot(main);
addInfo();
result = new Label();
main.addComponent(result);
main.addComponent(
new Button("click when rendered", event -> endTest()));
main.addComponent(
new Button("Click for layout repaint (cached components)",
event -> testContainer.markAsDirty()));
for (int i = 0; i < INITIAL_COMPONENTS; i++) {
Label l = new Label("foo" + i);
testContainer.addComponent(l);
}
main.addComponent(testContainer);
startTest();
}
public void startTest() {
startTime = new Date();
}
public void endTest() {
final long millis = (new Date()).getTime() - startTime.getTime();
final Float f = new Float(millis / 1000.0);
result.setValue("Test completed in " + f + " seconds");
}
private void addInfo() {
main.addComponent(new Label(DESCRIPTION, ContentMode.HTML));
}
}
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