This guide demonstrates how to display a check box, embedded within the window frame container. Resizing the window frame also resizes the check box proportionately; clicking the check box logs the event to the console.
<!DOCTYPE html> <!-- Copyright (c) 2026 by Javaika Technologies -->
<html lang = "en-AU"> <!-- Set the primary language to en-AU -->
<head>
<title>Check Box</title> <!-- Set the page title -->
<meta name = "robots" content = "noindex, follow">
</head>
<body>
<!-- Include the framework script tag -->
<script type = "module" src = "https://www.javaika.com/frame/web-interface@main/api.js"></script>
<!-- Run the demo as an ES Module -->
<script type = "module">
// Initialize a shorter prefix for referencing.
const jwi = window.javaika.webInterface;
let checkBoxControl; // Declare check box control.
// Initialize the developer token endpoint.
jwi.init({
tokenEndpoint: "https://www.javaika.com/pscript/jwt-access.php"
});
// Authenticate before using the framework.
jwi.requestToken({
framework: "web_interface" // Specify the framework for token issuance.
});
// Authenticate callback handler.
function onAuthenticate(event)
{
jwi.refreshToken(); // Refresh the authentication token.
console.log('[Web Interface] Authentication received callback:', event);
}
// Window frame resized callback handler.
function onWindowFrameResized(event)
{
jwi.scaleInterfaceControls(event.detail.scaleFactor);
}
// Check box initialized callback handler.
function onCheckBoxInitialized(event)
{
checkBoxControl.setSizeFactor(2.5); // Increase initial size.
checkBoxControl.setEvent('click', onClick); // Bind click event.
console.log('[Web Interface] Check box initialized callback:', event);
}
// Click callback handler.
function onClick(event)
{
const selected = checkBoxControl.isSelected();
console.log('[Web Interface] Click callback:', event);
console.log('[Web Interface] Check box selected:', selected);
}
// Initialized callback handler.
function onInitialized(event)
{
// Define the controls for the interface.
let windowFrame = new jwi.WindowFrame();
checkBoxControl = new jwi.CheckBox();
// Add initial styles for the check box.
checkBoxControl.addStyle('left', '45%');
checkBoxControl.addStyle('top', '45%');
// Add check box component to the window frame.
windowFrame.addCheckBoxElement(checkBoxControl);
// Enable manual resizing of the container window.
jwi.setContainerManuallyResizable(true);
jwi.setMaintainAspectRatio(true);
// Set handle offsets from the container window.
jwi.setContainerOffsetHeight(50);
jwi.setContainerOffsetWidth(50);
// Render interface to the browser window.
jwi.renderInterface(windowFrame);
console.log('[Web Interface] Framework initialized callback:', event);
}
// Callback event after authenticate.
document.addEventListener
(
'javaika.webInterface.authenticate', onAuthenticate
);
// Callback event after initialized.
document.addEventListener
(
'javaika.webInterface.initialized', onInitialized
);
// Callback event after check box initialized.
document.addEventListener
(
'javaika.webInterface.checkBoxInitialized', onCheckBoxInitialized
);
// Callback event after window frame resize.
document.addEventListener
(
'javaika.webInterface.windowFrameResized', onWindowFrameResized
);
</script>
</body>
</html>
/* Standard class styles */
.javaika-check-box
{
background: linear-gradient(to bottom, #F0F0F0, #D0D0D0);
box-sizing: border-box;
border: 1px solid;
border-color: #AAA;
background-color: #EEE;
position: absolute;
cursor: pointer;
height: 20px;
width: 20px;
display: none;
}
.javaika-check-box-checkmark
{
top: 2px;
left: 6px;
width: 6px;
height: 12px;
opacity: 0;
content: "";
position: relative;
border: solid #333;
border-top-width: 0;
border-left-width: 0;
border-right-width: 2px;
border-bottom-width: 2px;
box-sizing: border-box;
transform: rotate(45deg);
}
/* Adjoined class styles */
.javaika-check-box.disabled
{
pointer-events: none;
cursor: not-allowed;
opacity: 0.5;
}
.javaika-check-box.checked .javaika-check-box-checkmark,
.javaika-check-box.active .javaika-check-box-checkmark
{
opacity: 1;
}
/* Pseudo class styles */
.javaika-check-box:focus
{
outline: none;
}
.javaika-check-box:focus-visible
{
outline: 2px solid #809DFF;
outline-offset: 3px;
}
.javaika-check-box:hover
{
background: linear-gradient(to bottom, #FAFAFA, #E0E0E0);
}
.javaika-check-box:active
{
background: linear-gradient(to bottom, #D0D0D0, #F0F0F0);
}
Next capability: Demonstrate how to incorporate a Switch.