Proper editor
This commit is contained in:
parent
dd26912eee
commit
a837997f82
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@ -1,71 +0,0 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<title>code</title>
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<link rel="stylesheet" href="" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<script src="codapi.js"></script>
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<script src="codapi-settings.js"></script>
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<link rel="stylesheet" href="codapi.css" />
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<style>
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body {
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
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}
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pre {
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margin-bottom: 0;
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background: #f5f5f5;
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line-height: 1.2;
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}
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code {
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display: block;
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padding: 1.5em;
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}
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codapi-snippet {
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display: block;
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margin-bottom: 0.8em;
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background: #f5f5f5;
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}
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codapi-toolbar button {
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padding: 0;
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border: none;
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background: none;
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line-height: 1.35;
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color: #008bf5;
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font-size: 16px;
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}
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codapi-toolbar button::after {
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content: " ▶";
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}
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codapi-toolbar a {
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color: #008bf5;
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border-bottom: 1px solid rgba(0, 139, 245, 0.2);
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text-decoration: none;
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font-size: 16px;
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}
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</style>
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</head>
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<body>
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<codapi-settings url="https://hare-exec.fly.dev/v1"></codapi-settings>
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<div id="playground">
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<pre class="code"><code contenteditable="true">use fmt;
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export fn main() void = {
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const greetings = [
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"Hello, world!",
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"¡Hola Mundo!",
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"Γειά σου Κόσμε!",
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"Привіт, світ!",
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"こんにちは世界！",
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];
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for (let i = 0z; i < len(greetings); i+= 1) {
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fmt::println(greetings[i])!;
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};
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};
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</code></pre>
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</div>
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<codapi-snippet sandbox="hare" editor="basic" selector="#playground .code">
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</codapi-snippet>
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</body>
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</html>
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511
frontend/codejar.js
Normal file
511
frontend/codejar.js
Normal file
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@ -0,0 +1,511 @@
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const globalWindow = window;
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export function CodeJar(editor, highlight, opt = {}) {
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const options = {
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tab: '\t',
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indentOn: /[({\[]$/,
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moveToNewLine: /^[)}\]]/,
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spellcheck: false,
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catchTab: true,
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preserveIdent: true,
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addClosing: true,
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history: true,
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window: globalWindow,
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...opt,
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};
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const window = options.window;
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const document = window.document;
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const listeners = [];
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const history = [];
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let at = -1;
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let focus = false;
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let onUpdate = () => void 0;
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let prev; // code content prior keydown event
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editor.setAttribute('contenteditable', 'plaintext-only');
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editor.setAttribute('spellcheck', options.spellcheck ? 'true' : 'false');
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editor.style.outline = 'none';
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editor.style.overflowWrap = 'break-word';
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editor.style.overflowY = 'auto';
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editor.style.whiteSpace = 'pre-wrap';
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const doHighlight = (editor, pos) => {
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highlight(editor, pos);
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};
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let isLegacy = false; // true if plaintext-only is not supported
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if (editor.contentEditable !== 'plaintext-only')
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isLegacy = true;
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if (isLegacy)
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editor.setAttribute('contenteditable', 'true');
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const debounceHighlight = debounce(() => {
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const pos = save();
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doHighlight(editor, pos);
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restore(pos);
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}, 30);
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let recording = false;
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const shouldRecord = (event) => {
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return !isUndo(event) && !isRedo(event)
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&& event.key !== 'Meta'
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&& event.key !== 'Control'
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&& event.key !== 'Alt'
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&& !event.key.startsWith('Arrow');
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};
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const debounceRecordHistory = debounce((event) => {
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if (shouldRecord(event)) {
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recordHistory();
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recording = false;
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}
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}, 300);
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const on = (type, fn) => {
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listeners.push([type, fn]);
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editor.addEventListener(type, fn);
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};
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on('keydown', event => {
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if (event.defaultPrevented)
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return;
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prev = toString();
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if (options.preserveIdent)
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handleNewLine(event);
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else
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legacyNewLineFix(event);
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if (options.catchTab)
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handleTabCharacters(event);
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if (options.addClosing)
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handleSelfClosingCharacters(event);
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if (options.history) {
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handleUndoRedo(event);
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if (shouldRecord(event) && !recording) {
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recordHistory();
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recording = true;
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}
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}
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if (isLegacy && !isCopy(event))
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restore(save());
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});
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on('keyup', event => {
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if (event.defaultPrevented)
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return;
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if (event.isComposing)
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return;
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if (prev !== toString())
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debounceHighlight();
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debounceRecordHistory(event);
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onUpdate(toString());
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});
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on('focus', _event => {
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focus = true;
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});
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on('blur', _event => {
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focus = false;
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});
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on('paste', event => {
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recordHistory();
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handlePaste(event);
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recordHistory();
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onUpdate(toString());
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});
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on('cut', event => {
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recordHistory();
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handleCut(event);
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recordHistory();
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onUpdate(toString());
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});
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function save() {
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const s = getSelection();
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const pos = { start: 0, end: 0, dir: undefined };
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let { anchorNode, anchorOffset, focusNode, focusOffset } = s;
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if (!anchorNode || !focusNode)
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throw 'error1';
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// If the anchor and focus are the editor element, return either a full
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// highlight or a start/end cursor position depending on the selection
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if (anchorNode === editor && focusNode === editor) {
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pos.start = (anchorOffset > 0 && editor.textContent) ? editor.textContent.length : 0;
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pos.end = (focusOffset > 0 && editor.textContent) ? editor.textContent.length : 0;
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pos.dir = (focusOffset >= anchorOffset) ? '->' : '<-';
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return pos;
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}
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// Selection anchor and focus are expected to be text nodes,
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// so normalize them.
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if (anchorNode.nodeType === Node.ELEMENT_NODE) {
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const node = document.createTextNode('');
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anchorNode.insertBefore(node, anchorNode.childNodes[anchorOffset]);
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anchorNode = node;
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anchorOffset = 0;
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}
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if (focusNode.nodeType === Node.ELEMENT_NODE) {
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const node = document.createTextNode('');
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focusNode.insertBefore(node, focusNode.childNodes[focusOffset]);
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focusNode = node;
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focusOffset = 0;
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}
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visit(editor, el => {
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if (el === anchorNode && el === focusNode) {
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pos.start += anchorOffset;
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pos.end += focusOffset;
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pos.dir = anchorOffset <= focusOffset ? '->' : '<-';
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return 'stop';
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}
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if (el === anchorNode) {
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pos.start += anchorOffset;
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if (!pos.dir) {
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pos.dir = '->';
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}
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else {
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return 'stop';
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}
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}
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else if (el === focusNode) {
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pos.end += focusOffset;
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if (!pos.dir) {
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pos.dir = '<-';
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}
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else {
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return 'stop';
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}
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}
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if (el.nodeType === Node.TEXT_NODE) {
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if (pos.dir != '->')
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pos.start += el.nodeValue.length;
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if (pos.dir != '<-')
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pos.end += el.nodeValue.length;
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}
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});
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editor.normalize(); // collapse empty text nodes
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return pos;
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}
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function restore(pos) {
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const s = getSelection();
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let startNode, startOffset = 0;
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let endNode, endOffset = 0;
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if (!pos.dir)
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pos.dir = '->';
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if (pos.start < 0)
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pos.start = 0;
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if (pos.end < 0)
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pos.end = 0;
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// Flip start and end if the direction reversed
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if (pos.dir == '<-') {
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const { start, end } = pos;
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pos.start = end;
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pos.end = start;
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}
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let current = 0;
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visit(editor, el => {
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if (el.nodeType !== Node.TEXT_NODE)
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return;
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const len = (el.nodeValue || '').length;
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if (current + len > pos.start) {
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if (!startNode) {
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startNode = el;
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startOffset = pos.start - current;
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}
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if (current + len > pos.end) {
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endNode = el;
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endOffset = pos.end - current;
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return 'stop';
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}
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}
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current += len;
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});
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if (!startNode)
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startNode = editor, startOffset = editor.childNodes.length;
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if (!endNode)
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endNode = editor, endOffset = editor.childNodes.length;
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// Flip back the selection
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if (pos.dir == '<-') {
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[startNode, startOffset, endNode, endOffset] = [endNode, endOffset, startNode, startOffset];
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}
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{
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// If nodes not editable, create a text node.
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const startEl = uneditable(startNode);
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if (startEl) {
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const node = document.createTextNode('');
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startEl.parentNode?.insertBefore(node, startEl);
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startNode = node;
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startOffset = 0;
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}
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const endEl = uneditable(endNode);
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if (endEl) {
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const node = document.createTextNode('');
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endEl.parentNode?.insertBefore(node, endEl);
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endNode = node;
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endOffset = 0;
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}
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}
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s.setBaseAndExtent(startNode, startOffset, endNode, endOffset);
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editor.normalize(); // collapse empty text nodes
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}
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function uneditable(node) {
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while (node && node !== editor) {
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if (node.nodeType === Node.ELEMENT_NODE) {
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const el = node;
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if (el.getAttribute('contenteditable') == 'false') {
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return el;
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}
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}
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node = node.parentNode;
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}
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}
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function beforeCursor() {
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const s = getSelection();
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const r0 = s.getRangeAt(0);
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const r = document.createRange();
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r.selectNodeContents(editor);
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r.setEnd(r0.startContainer, r0.startOffset);
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return r.toString();
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}
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function afterCursor() {
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const s = getSelection();
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const r0 = s.getRangeAt(0);
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const r = document.createRange();
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r.selectNodeContents(editor);
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r.setStart(r0.endContainer, r0.endOffset);
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return r.toString();
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}
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function handleNewLine(event) {
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if (event.key === 'Enter') {
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const before = beforeCursor();
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const after = afterCursor();
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let [padding] = findPadding(before);
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let newLinePadding = padding;
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// If last symbol is "{" ident new line
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if (options.indentOn.test(before)) {
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newLinePadding += options.tab;
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}
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// Preserve padding
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if (newLinePadding.length > 0) {
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preventDefault(event);
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event.stopPropagation();
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insert('\n' + newLinePadding);
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}
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else {
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legacyNewLineFix(event);
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}
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// Place adjacent "}" on next line
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if (newLinePadding !== padding && options.moveToNewLine.test(after)) {
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const pos = save();
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insert('\n' + padding);
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restore(pos);
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}
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}
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}
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function legacyNewLineFix(event) {
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// Firefox does not support plaintext-only mode
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// and puts <div><br></div> on Enter. Let's help.
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if (isLegacy && event.key === 'Enter') {
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preventDefault(event);
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event.stopPropagation();
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if (afterCursor() == '') {
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insert('\n ');
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const pos = save();
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pos.start = --pos.end;
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restore(pos);
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}
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else {
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insert('\n');
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}
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}
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}
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function handleSelfClosingCharacters(event) {
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const open = `([{'"`;
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const close = `)]}'"`;
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if (open.includes(event.key)) {
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preventDefault(event);
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const pos = save();
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const wrapText = pos.start == pos.end ? '' : getSelection().toString();
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const text = event.key + wrapText + close[open.indexOf(event.key)];
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insert(text);
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pos.start++;
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pos.end++;
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restore(pos);
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}
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}
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function handleTabCharacters(event) {
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if (event.key === 'Tab') {
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preventDefault(event);
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if (event.shiftKey) {
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const before = beforeCursor();
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let [padding, start] = findPadding(before);
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if (padding.length > 0) {
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const pos = save();
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// Remove full length tab or just remaining padding
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const len = Math.min(options.tab.length, padding.length);
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restore({ start, end: start + len });
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document.execCommand('delete');
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pos.start -= len;
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pos.end -= len;
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restore(pos);
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}
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}
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else {
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insert(options.tab);
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}
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}
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}
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function handleUndoRedo(event) {
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if (isUndo(event)) {
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preventDefault(event);
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at--;
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const record = history[at];
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if (record) {
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editor.innerHTML = record.html;
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restore(record.pos);
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}
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if (at < 0)
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at = 0;
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}
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if (isRedo(event)) {
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preventDefault(event);
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at++;
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const record = history[at];
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if (record) {
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editor.innerHTML = record.html;
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restore(record.pos);
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}
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if (at >= history.length)
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at--;
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}
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}
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function recordHistory() {
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if (!focus)
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return;
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const html = editor.innerHTML;
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const pos = save();
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const lastRecord = history[at];
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if (lastRecord) {
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if (lastRecord.html === html
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&& lastRecord.pos.start === pos.start
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&& lastRecord.pos.end === pos.end)
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return;
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}
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at++;
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history[at] = { html, pos };
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history.splice(at + 1);
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const maxHistory = 300;
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if (at > maxHistory) {
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at = maxHistory;
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history.splice(0, 1);
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}
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}
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function handlePaste(event) {
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if (event.defaultPrevented)
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return;
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preventDefault(event);
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const originalEvent = event.originalEvent ?? event;
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const text = originalEvent.clipboardData.getData('text/plain').replace(/\r\n?/g, '\n');
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const pos = save();
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insert(text);
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doHighlight(editor);
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restore({
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start: Math.min(pos.start, pos.end) + text.length,
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end: Math.min(pos.start, pos.end) + text.length,
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dir: '<-',
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});
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}
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function handleCut(event) {
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const pos = save();
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const selection = getSelection();
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const originalEvent = event.originalEvent ?? event;
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originalEvent.clipboardData.setData('text/plain', selection.toString());
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document.execCommand('delete');
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doHighlight(editor);
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restore({
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start: Math.min(pos.start, pos.end),
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end: Math.min(pos.start, pos.end),
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dir: '<-',
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});
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preventDefault(event);
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}
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function visit(editor, visitor) {
|
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const queue = [];
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if (editor.firstChild)
|
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queue.push(editor.firstChild);
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let el = queue.pop();
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||||
while (el) {
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||||
if (visitor(el) === 'stop')
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break;
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if (el.nextSibling)
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queue.push(el.nextSibling);
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if (el.firstChild)
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queue.push(el.firstChild);
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el = queue.pop();
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}
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}
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function isCtrl(event) {
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return event.metaKey || event.ctrlKey;
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}
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function isUndo(event) {
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return isCtrl(event) && !event.shiftKey && getKeyCode(event) === 'Z';
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}
|
||||
function isRedo(event) {
|
||||
return isCtrl(event) && event.shiftKey && getKeyCode(event) === 'Z';
|
||||
}
|
||||
function isCopy(event) {
|
||||
return isCtrl(event) && getKeyCode(event) === 'C';
|
||||
}
|
||||
function getKeyCode(event) {
|
||||
let key = event.key || event.keyCode || event.which;
|
||||
if (!key)
|
||||
return undefined;
|
||||
return (typeof key === 'string' ? key : String.fromCharCode(key)).toUpperCase();
|
||||
}
|
||||
function insert(text) {
|
||||
text = text
|
||||
.replace(/&/g, '&')
|
||||
.replace(/</g, '<')
|
||||
.replace(/>/g, '>')
|
||||
.replace(/"/g, '"')
|
||||
.replace(/'/g, ''');
|
||||
document.execCommand('insertHTML', false, text);
|
||||
}
|
||||
function debounce(cb, wait) {
|
||||
let timeout = 0;
|
||||
return (...args) => {
|
||||
clearTimeout(timeout);
|
||||
timeout = window.setTimeout(() => cb(...args), wait);
|
||||
};
|
||||
}
|
||||
function findPadding(text) {
|
||||
// Find beginning of previous line.
|
||||
let i = text.length - 1;
|
||||
while (i >= 0 && text[i] !== '\n')
|
||||
i--;
|
||||
i++;
|
||||
// Find padding of the line.
|
||||
let j = i;
|
||||
while (j < text.length && /[ \t]/.test(text[j]))
|
||||
j++;
|
||||
return [text.substring(i, j) || '', i, j];
|
||||
}
|
||||
function toString() {
|
||||
return editor.textContent || '';
|
||||
}
|
||||
function preventDefault(event) {
|
||||
event.preventDefault();
|
||||
}
|
||||
function getSelection() {
|
||||
if (editor.parentNode?.nodeType == Node.DOCUMENT_FRAGMENT_NODE) {
|
||||
return editor.parentNode.getSelection();
|
||||
}
|
||||
return window.getSelection();
|
||||
}
|
||||
return {
|
||||
updateOptions(newOptions) {
|
||||
Object.assign(options, newOptions);
|
||||
},
|
||||
updateCode(code) {
|
||||
editor.textContent = code;
|
||||
doHighlight(editor);
|
||||
onUpdate(code);
|
||||
},
|
||||
onUpdate(callback) {
|
||||
onUpdate = callback;
|
||||
},
|
||||
toString,
|
||||
save,
|
||||
restore,
|
||||
recordHistory,
|
||||
destroy() {
|
||||
for (let [type, fn] of listeners) {
|
||||
editor.removeEventListener(type, fn);
|
||||
}
|
||||
},
|
||||
};
|
||||
}
|
||||
138
frontend/index.html
Normal file
138
frontend/index.html
Normal file
|
|
@ -0,0 +1,138 @@
|
|||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="utf-8" />
|
||||
<title>code</title>
|
||||
<link rel="stylesheet" href="" />
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<script src="codapi.js"></script>
|
||||
<script src="codapi-settings.js"></script>
|
||||
<link rel="stylesheet" href="codapi.css" />
|
||||
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.18.1/styles/github.min.css" />
|
||||
<style>
|
||||
body {
|
||||
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
|
||||
}
|
||||
codapi-snippet {
|
||||
display: block;
|
||||
margin: 10px 0;
|
||||
}
|
||||
codapi-snippet button {
|
||||
padding: 0;
|
||||
border: none;
|
||||
background: none;
|
||||
line-height: 1.35;
|
||||
color: #008bf5;
|
||||
font-size: 16px;
|
||||
}
|
||||
codapi-toolbar button::after {
|
||||
content: " ▶";
|
||||
}
|
||||
codapi-toolbar a {
|
||||
color: #008bf5;
|
||||
border-bottom: 1px solid rgba(0, 139, 245, 0.2);
|
||||
text-decoration: none;
|
||||
font-size: 16px;
|
||||
}
|
||||
|
||||
.editor {
|
||||
border-radius: 6px;
|
||||
box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
|
||||
font-family: 'Source Code Pro', monospace;
|
||||
font-size: 14px;
|
||||
font-weight: 400;
|
||||
height: 340px;
|
||||
letter-spacing: normal;
|
||||
line-height: 20px;
|
||||
padding: 10px;
|
||||
resize: none !important;
|
||||
tab-size: 4;
|
||||
}
|
||||
|
||||
codapi-output {
|
||||
border-radius: 6px;
|
||||
box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
|
||||
font-family: 'Source Code Pro', monospace;
|
||||
font-size: 14px;
|
||||
font-weight: 400;
|
||||
letter-spacing: normal;
|
||||
line-height: 20px;
|
||||
padding: 10px;
|
||||
resize: none !important;
|
||||
tab-size: 4;
|
||||
background-color: #f8f8f8;
|
||||
}
|
||||
|
||||
codapi-output pre {
|
||||
margin: 0;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<codapi-settings url="https://hare-exec.fly.dev/v1"></codapi-settings>
|
||||
|
||||
<div class="editor language-c"></div>
|
||||
|
||||
<codapi-snippet sandbox="hare" editor="external" selector=".editor">
|
||||
<button class="share">Share</button>
|
||||
</codapi-snippet>
|
||||
|
||||
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.18.1/highlight.min.js"></script>
|
||||
<script type="module">
|
||||
import {CodeJar} from "./codejar.js"
|
||||
const highlight = editor => {
|
||||
editor.textContent = editor.textContent
|
||||
hljs.highlightBlock(editor)
|
||||
}
|
||||
|
||||
|
||||
function base64ToBytes(base64) {
|
||||
const binString = atob(base64);
|
||||
return Uint8Array.from(binString, (m) => m.codePointAt(0));
|
||||
}
|
||||
function base64Encode(str) {
|
||||
return bytesToBase64(new TextEncoder().encode(str));
|
||||
}
|
||||
|
||||
function bytesToBase64(bytes) {
|
||||
const binString = Array.from(bytes, (byte) =>
|
||||
String.fromCodePoint(byte),
|
||||
).join("");
|
||||
return btoa(binString);
|
||||
}
|
||||
function base64Decode(bytes) {
|
||||
return new TextDecoder().decode(base64ToBytes(bytes));
|
||||
}
|
||||
|
||||
let jar = CodeJar(document.querySelector('.editor'), highlight)
|
||||
const defaultCode = `use fmt;
|
||||
|
||||
export fn main() void = {
|
||||
const greetings = [
|
||||
"Hello, world!",
|
||||
"¡Hola Mundo!",
|
||||
"Γειά σου Κόσμε!",
|
||||
"Привіт, світ!",
|
||||
"こんにちは世界！",
|
||||
];
|
||||
for (let i = 0z; i < len(greetings); i+= 1) {
|
||||
fmt::println(greetings[i])!;
|
||||
};
|
||||
};`
|
||||
|
||||
if (location.hash) {
|
||||
let code = base64Decode(location.hash.substr(1));
|
||||
jar.updateCode(code)
|
||||
} else {
|
||||
location.hash = base64Encode(defaultCode);
|
||||
jar.updateCode(defaultCode);
|
||||
}
|
||||
|
||||
document.getElementsByClassName("share")[0].onclick = (e) => {
|
||||
e.preventDefault();
|
||||
let code = document.querySelector('.editor').innerText;
|
||||
location.hash = base64Encode(code);
|
||||
}
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Reference in a new issue