111 lines
3.7 KiB
JavaScript
111 lines
3.7 KiB
JavaScript
const pretext = "root@baipyr.us:~# ";
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let startPosition = 0;
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let cursorPosition = 0;
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let cursorYOffset = 0;
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document.addEventListener("keypress", e=>{
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if ((e.key == "Enter") || (e.code == "KeyV" && e.ctrlKey))
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return;
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let textbox = document.getElementById("input");
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const index = cursorPosition - startPosition;
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if (e.key == ' ' && (textbox.innerText[index-1] == ' ' || cursorPosition == startPosition))
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return;
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if (index <= textbox.innerText.length-1) {
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const text = textbox.innerText;
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const a = text.substring(0, index);
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const b = text.substring(index, text.length);
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textbox.innerText = a + e.key + b;
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} else
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textbox.innerText += e.key;
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cursorPosition++;
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updateCursor();
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});
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document.addEventListener("keydown", e=>{
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let textbox = document.getElementById("input");
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const index = cursorPosition - startPosition;
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const text = textbox.innerText;
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switch (e.key) {
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case "Backspace":
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// Ein Zeichen nach links löschen
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if (index == 0)
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return;
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if (index <= textbox.innerText.length-1) {
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const a = text.substring(0, index-1);
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const b = text.substring(index, text.length);
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textbox.innerText=a+b;
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} else
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textbox.innerText = text.substring(0,text.length-1);
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cursorPosition--;
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updateCursor();
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break;
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case "ArrowLeft":
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// Ein Zeichen nach links
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if (cursorPosition > startPosition) {
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cursorPosition--;
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updateCursor();
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}
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break;
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case "ArrowRight":
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// Ein Zeichen nach reckts
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if (index < textbox.innerText.length) {
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cursorPosition++;
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updateCursor();
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}
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break;
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case "Delete":
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// Ein Zeichen nach rechts löschen
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if (index == 0 || index >= textbox.innerText.length)
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return;
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const a = text.substring(0, index);
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const b = text.substring(index+1, text.length);
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textbox.innerText=a+b;
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break;
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case "Enter":
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// Befehl absenden / Zeilenumbruch
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const parent = document.getElementById("textbox");
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parent.removeChild(textbox);
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// Run command and return output???
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const commandOutput = "";
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parent.innerHTML += '<a style="color: lightgrey;">' + text + '</a><br>' + commandOutput + pretext;
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textbox.innerText = "";
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parent.appendChild(textbox);
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cursorPosition = startPosition;
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cursorYOffset++;
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updateCursor();
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break;
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case "ArrowUp":
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// Einen Befehl zurück in der History
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break;
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case "ArrowDown":
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// Einen Befehl nach vorne in der History
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break;
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case "Tab":
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// Autocomplete
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break;
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}
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});
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function updateCursor() {
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let cursor = document.getElementById("cursor");
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const transform = `translate(${cursorPosition}ch,${cursorYOffset}em)`;
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cursor.style.transform = transform;
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}
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function preload() {
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let cursor = document.getElementById("cursor");
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let textbox = document.getElementById("textbox");
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textbox.innerHTML = pretext+textbox.innerHTML;
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const length = textbox.innerText.length+1;
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const transform = `translate(${length}ch)`;
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cursor.style.transform = transform;
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startPosition = length;
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cursorPosition = length;
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}
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setInterval(()=>{
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let cursor = document.getElementById("cursor");
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cursor.style.opacity = (cursor.style.opacity=="1")?"0":"1";
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},1000); |