Html: index.html
<html>
<head>
<meta charset="UTF-8">
<title>Comet</title>
</head>
<body></body>
</html>Java: IndexController.java
@Page(name = "index", path = "index.html")
public class IndexController extends Window {
private static final String[] COLORS = new String[] { "red", "blue", "green" };
private int i = -1;
public void init(JRenderContext context) {
// Creating Div Element
final DivElement div = document.createElement(DivElement.class);
// Append div on Body
document.body.appendChild(div);
// Sample: Comet System - With Anonymous Classes
// http://en.wikipedia.org/wiki/Comet_(programming)
setTimeout(new SimpleFunction() {
private int i = -1;
public void init(JRenderContext context) {
// Loop to keep the conection and releasing the mods when
// necessary, using flushing method
try {
while (true) {
div.textContent(++i + ""); // Set Text Content
flush(); // Flushing
if(i == 10) {
break;
}
Thread.sleep(1000); // Sleep 1 Second
}
} catch (Exception e) { // InterruptedException or ConnectionLost
e.printStackTrace();
}
}
}, 0);
// Sample 2: Comet System - Calling Method
// http://en.wikipedia.org/wiki/Comet_(programming)
setTimeout(new FunctionHandle("autoChangeColor"), 0);
}
public void autoChangeColor() {
// Creating Element
final DivElement div = document.createElement(DivElement.class);
// Append div on Body
document.body.appendChild(div);
// Set Text Content
div.textContent("Auto Change Color");
try {
// Loop to keep the conection and releasing the mods when necessary,
// using flushing method
while (true) {
try {
div.style("color", COLORS[++i]); // Change Text Color
if (COLORS.length - 1 == i)
i = -1; // Reset Variable to -1
flush(); // Flushing
Thread.sleep(200); // Sleep 200ms
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
} catch (Exception e) { // InterruptedException or ConnectionLost
// On Connection Lost
}
}
}