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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Input Events</title>
<style>
div { padding:0px; margin: 0px; }
#trackPointer { position: fixed; }
#resultContainer { width: 600px; height: 60px; }
.area { width: 100px; height: 50px; background-color: #ccc; }
.block { width: 5px; height: 5px; border: solid 1px red; }
#dragArea { position: relative; }
#dragTarget { position: absolute; top:22px; left:47px;}
</style>
<script>
"use strict";
var allEvents = [];
function makeParagraph(message) {
let paragraph = document.createElement("p");
paragraph.textContent = message;
return paragraph;
}
function displayMessage(message) {
let eventNode = document.getElementById("events");
eventNode.innerHTML = ""
eventNode.appendChild(makeParagraph(message));
}
function appendMessage(message) {
document.getElementById("events").appendChild(makeParagraph(message));
}
/**
* Escape |key| if it's in a surrogate-half character range.
*
* Example: given "\ud83d" return "U+d83d".
*
* Otherwise JSON.stringify will convert it to U+FFFD (REPLACEMENT CHARACTER)
* when returning a value from executeScript, for example.
*/
function escapeSurrogateHalf(key) {
if (typeof key !== "undefined" && key.length === 1) {
var charCode = key.charCodeAt(0);
var highSurrogate = charCode >= 0xD800 && charCode <= 0xDBFF;
var surrogate = highSurrogate || (charCode >= 0xDC00 && charCode <= 0xDFFF);
if (surrogate) {
key = "U+" + charCode.toString(16);
}
}
return key;
}
function recordKeyboardEvent(event) {
var key = escapeSurrogateHalf(event.key);
allEvents.push({
"code": event.code,
"key": key,
"which": event.which,
"location": event.location,
"alt": event.altKey,
"ctrl": event.ctrlKey,
"meta": event.metaKey,
"shift": event.shiftKey,
"repeat": event.repeat,
"type": event.type
});
appendMessage(event.type + " " +
"code: " + event.code + ", " +
"key: " + key + ", " +
"which: " + event.which + ", " +
"keyCode: " + event.keyCode);
}
function recordInputEvent(event) {
allEvents.push({
"data": event.data,
"inputType": event.inputType,
"isComposing": event.isComposing,
});
appendMessage("InputEvent " +
"data: " + event.data + ", " +
"inputType: " + event.inputType + ", " +
"isComposing: " + event.isComposing);
}
function recordPointerEvent(event) {
if (event.type === "contextmenu") {
event.preventDefault();
}
allEvents.push({
"type": event.type,
"button": event.button,
"buttons": event.buttons,
"pageX": event.pageX,
"pageY": event.pageY,
"ctrlKey": event.ctrlKey,
"metaKey": event.metaKey,
"altKey": event.altKey,
"shiftKey": event.shiftKey,
"target": event.target.id
});
appendMessage(event.type + " " +
"pageX: " + event.pageX + ", " +
"pageY: " + event.pageY + ", " +
"button: " + event.button + ", " +
"buttons: " + event.buttons + ", " +
"ctrlKey: " + event.ctrlKey + ", " +
"altKey: " + event.altKey + ", " +
"metaKey: " + event.metaKey + ", " +
"shiftKey: " + event.shiftKey + ", " +
"target id: " + event.target.id);
}
function resetEvents() {
allEvents.length = 0;
displayMessage("");
}
document.addEventListener("DOMContentLoaded", function() {
let keyReporter = document.getElementById("keys");
keyReporter.addEventListener("keyup", recordKeyboardEvent);
keyReporter.addEventListener("keypress", recordKeyboardEvent);
keyReporter.addEventListener("keydown", recordKeyboardEvent);
keyReporter.addEventListener("input", recordInputEvent);
let mouseReporter = document.getElementById("pointers");
mouseReporter.addEventListener("click", recordPointerEvent);
mouseReporter.addEventListener("dblclick", recordPointerEvent);
mouseReporter.addEventListener("mousedown", recordPointerEvent);
mouseReporter.addEventListener("mouseup", recordPointerEvent);
mouseReporter.addEventListener("contextmenu", recordPointerEvent);
});
</script>
</head>
<body>
<div id="trackPointer" class="block"></div>
<div>
<h2>KeyReporter</h2>
<input type="text" id="keys" size="80">
</div>
<div>
<h2>ClickReporter</h2>
<div id="pointers" class="area">
</div>
</div>
<div id="resultContainer">
<h2>Events</h2>
<div id="events"></div>
</div>
</body>
</html>
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