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package com.vaadin.tests.layouts;
import com.vaadin.shared.ui.ContentMode;
import com.vaadin.tests.components.TestBase;
import com.vaadin.ui.AbstractComponent;
import com.vaadin.ui.Button;
import com.vaadin.ui.CheckBox;
import com.vaadin.ui.Component;
import com.vaadin.ui.CssLayout;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Layout;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.v7.ui.NativeSelect;
import com.vaadin.v7.ui.TextField;
public class TestLayoutPerformance extends TestBase {
private NativeSelect ns;
private int i;
private NativeSelect ns2;
private VerticalLayout testarea = new VerticalLayout();
@Override
protected String getDescription() {
return "Test app to test simple rendering to various layouts.";
}
@Override
protected Integer getTicketNumber() {
return null;
}
@Override
protected void setup() {
Label label = new Label("<h1>CssLayout performance test.</h1>",
ContentMode.HTML);
getLayout().addComponent(label);
label = new Label(
"<em>Hint</em>. Use debug dialog to measure rendering times TODO: extend with size settings (to both layout and content).",
ContentMode.HTML);
getLayout().addComponent(label);
ns = new NativeSelect("Select component to test");
ns.addItem(CssLayout.class);
ns.addItem(GridLayout.class);
ns.addItem(VerticalLayout.class);
ns.setNullSelectionAllowed(false);
ns.setValue(CssLayout.class);
ns2 = new NativeSelect("Select component to render inside layout.");
ns2.addItem(Label.class);
ns2.addItem(Button.class);
ns2.setNullSelectionAllowed(false);
ns2.setValue(Label.class);
final TextField n = new TextField("Number of components");
n.setValue("1000");
final CheckBox cb = new CheckBox("Generate captions", false);
Button b = new Button("Render component");
b.addClickListener(event -> {
int components = Integer.parseInt(n.getValue());
Layout layout = getCurrentLayout();
for (int i = 0; i < components; i++) {
Component component = newTestComponent();
if (cb.getValue()) {
component.setCaption("caption " + i);
}
layout.addComponent(component);
}
testarea.removeAllComponents();
testarea.addComponent(layout);
});
getLayout().addComponent(ns);
getLayout().addComponent(ns2);
getLayout().addComponent(n);
getLayout().addComponent(cb);
getLayout().addComponent(b);
getLayout().addComponent(testarea);
}
private Layout getCurrentLayout() {
Class<?> value = (Class<?>) ns.getValue();
if (value == GridLayout.class) {
return new GridLayout(10, 1);
}
try {
return (Layout) value.newInstance();
} catch (InstantiationException | IllegalAccessException e) {
e.printStackTrace();
}
return null;
}
private Component newTestComponent() {
Class<?> componentClass = (Class<?>) ns2.getValue();
AbstractComponent newInstance = null;
try {
newInstance = (AbstractComponent) componentClass.newInstance();
} catch (InstantiationException | IllegalAccessException e) {
e.printStackTrace();
}
if (componentClass == Label.class) {
((Label) newInstance).setValue("Test l " + (i++));
((Label) newInstance).setSizeUndefined();
} else {
newInstance.setCaption("Test l " + (i++));
}
return newInstance;
}
}
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