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/*
* Copyright 2011 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;
import java.util.Date;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Label;
import com.vaadin.ui.Table;
import com.vaadin.ui.VerticalLayout;
public class PerformanceTestSubTreeCaching extends CustomComponent {
private final VerticalLayout main;
private final VerticalLayout testContainer;
private Date startTime;
private final Label result;
private static final String DESCRIPTION = "Hypothesis: Toolkit 4 has major architechtural problem when adding "
+ "small incrementall updates to a container which has either a lot or "
+ "some very slow components in it. Toolkit 5 has 'subtree caching' and a"
+ " small amount of logic in containers, so CommunicationManager can assure"
+ " that client do not need information about unchanged components it contains."
+ " Completing test ought to be much faster with Toolkit 5.";
private static final int INITIAL_COMPONENTS = 40;
public PerformanceTestSubTreeCaching() {
main = new VerticalLayout();
setCompositionRoot(main);
addInfo();
Button b = new Button("start test", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
startTest();
}
});
b.setDescription("Push this button to start test. A test label will be rendered above existing components.");
main.addComponent(b);
b = new Button("end test", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
endTest();
}
});
b.setDescription("Push this button as soon as test componenet is rendered.");
main.addComponent(b);
result = new Label();
main.addComponent(result);
testContainer = new VerticalLayout();
populateContainer(testContainer, INITIAL_COMPONENTS);
main.addComponent(testContainer);
}
public void startTest() {
startTime = new Date();
testContainer.addComponentAsFirst(new Label("Simplel Test Component"));
}
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");
}
/**
* Adds n Table components to given container
*
* @param testContainer2
*/
private void populateContainer(VerticalLayout container, int n) {
for (int i = 0; i < n; i++) {
// array_type array_element = [i];
final Table t = TestForTablesInitialColumnWidthLogicRendering
.getTestTable(5, 100);
container.addComponent(t);
}
}
private void addInfo() {
main.addComponent(new Label(DESCRIPTION, ContentMode.XHTML));
}
}
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