diff options
Diffstat (limited to 'html/playground/index.html')
| -rw-r--r-- | html/playground/index.html | 435 |
1 files changed, 220 insertions, 215 deletions
diff --git a/html/playground/index.html b/html/playground/index.html index 680f022..a236d2f 100644 --- a/html/playground/index.html +++ b/html/playground/index.html @@ -6,238 +6,243 @@ <title>JavaScript Playground</title> <meta name="description" content="A JavaScript jungle-gym for doing experiments and sharing scrappy fiddles."> <style> - body { - display: flex; - flex-direction: column; - align-items: center; - background-color: #ddd; - padding: 10px; - height: 100vh; - margin: 0; - } - - textarea { - width: 100%; - height: 64%; - font-family: monospace; - background-color: #FFFEEC; - border: 2px solid #000; - scrollbar-width: none; - font-size: 1rem; - margin-bottom: 10px; - padding: 10px; - box-sizing: border-box; - resize: none; - border-bottom: 12px solid teal; - -webkit-user-modify: read-write-plaintext-only; - } - - textarea::-webkit-scrollbar { - display: none; - } - - textarea::selection { - background-color: #EFECA7; - } - - textarea:focus { - outline: none; - } - - #console { - width: 100%; - height: 22%; - background-color: #000; - color: #0fc; - font-family: monospace; - font-size: 1rem; - overflow-y: auto; - padding: 10px; - box-sizing: border-box; - white-space: pre-wrap; - } - - .button-container { - width: 100%; - display: flex; - justify-content: flex-end; - margin-bottom: 10px; - } - - button { - padding: 10px 20px; - font-size: 1rem; - margin-left: 10px; - cursor: pointer; - border: none; - transition: background-color 0.3s ease; - } - - button:hover, button:focus { - outline: none; - } - - button.run { - background-color: teal; - color: #FFFFFF; - } + html, body { height: 100%; margin: 0; padding: 0; } + body { display: flex; flex-direction: column; background-color: #ddd; } + #app { display: flex; flex-direction: column; padding: 10px; height: 100%; box-sizing: border-box; } + .button-container { width: 100%; display: flex; justify-content: flex-end; margin-bottom: 10px; flex-shrink: 0; } + button { padding: 10px 20px; font-size: 1rem; margin-left: 10px; cursor: pointer; border: none; transition: background-color 0.3s ease; } + button:hover, button:focus { outline: none; } + button:disabled { background-color: #999; cursor: not-allowed; } + button.run { background-color: teal; color: #FFFFFF; } + textarea { width: 100%; height: 64%; font-family: monospace; background-color: #FFFEEC; border: 2px solid #000; scrollbar-width: none; font-size: 1rem; margin-bottom: 10px; padding: 10px; box-sizing: border-box; resize: none; border-bottom: 12px solid teal; -webkit-user-modify: read-write-plaintext-only; flex-shrink: 0; } + textarea::-webkit-scrollbar { display: none; } + textarea::selection { background-color: #EFECA7; } + textarea:focus { outline: none; } + #console { width: 100%; height: 22%; background-color: #000; color: #0fc; font-family: monospace; font-size: 1rem; overflow-y: auto; padding: 10px; box-sizing: border-box; white-space: pre-wrap; flex-grow: 1; } + #console .log-item { margin-bottom: 5px; border-bottom: 1px solid #333; } + #console details { cursor: pointer; } + #console summary { outline: none; } </style> </head> <body> + <div id="app"></div> - <div class="playground" id="playground"> - <div class="seesaw" id="seesaw"></div> - <div class="slide" id="slide"></div> - </div> - - <div class="button-container"> - <button onclick="clearEverything()">Clear</button> - <button onclick="downloadCodeAndEditor()">Download</button> - <button onclick="shareCode()">Share</button> - <button onclick="evaluateCode()" class="run">Run Code</button> - </div> - <textarea id="codeInput" placeholder="Enter JavaScript..." spellcheck="false"></textarea> - <div id="console"></div> + <iframe id="sandbox" style="display: none;" title="JavaScript Sandbox"></iframe> <script> - function evaluateCode() { - const code = document.getElementById('codeInput').value; - const consoleDiv = document.getElementById('console'); - consoleDiv.innerHTML = ''; - - // Custom console.log function to output to the console div - const originalConsoleLog = console.log; - console.log = function(...args) { - args.forEach(arg => { - const output = document.createElement('div'); - output.textContent = typeof arg === 'object' ? JSON.stringify(arg, null, 2) : arg; - consoleDiv.appendChild(output); - }); - originalConsoleLog.apply(console, args); - }; - - try { - eval(code); - } catch (error) { - const errorOutput = document.createElement('div'); - errorOutput.textContent = error; - errorOutput.style.color = 'red'; - consoleDiv.appendChild(errorOutput); + /** + * ---------------------------------------------------------------- + * Functional Utilities + * ---------------------------------------------------------------- + */ + + const pipe = (...fns) => (initialValue) => fns.reduce((acc, fn) => fn(acc), initialValue); + const compose = (...fns) => (initialValue) => fns.reduceRight((acc, fn) => fn(acc), initialValue); + + /** + * ---------------------------------------------------------------- + * The Elm Architecture (Model, View, Update) Implementation + * ---------------------------------------------------------------- + */ + + const init = { + code: ` + const add = (a, b) => a + b; + const multiply = (a, b) => a * b; + + const addAndMultiply = pipe(add, multiply); + + console.log(addAndMultiply(2, 3)); +`, + consoleOutput: [], + sandboxReady: false, + }; + + const view = (model) => ` + <div class="button-container"> + <button onclick="dispatch({ type: 'CLEAR' })">Clear</button> + <button onclick="dispatch({ type: 'DOWNLOAD' })">Download</button> + <button onclick="dispatch({ type: 'SHARE' })">Share</button> + <button onclick="dispatch({ type: 'RUN_CODE' })" class="run" ${!model.sandboxReady ? 'disabled title="Sandbox is loading..."' : ''}>Run Code</button> + </div> + <textarea id="codeInput" oninput="dispatch({ type: 'CODE_CHANGED', payload: this.value })" onkeydown="handleKeyDown(event)">${model.code}</textarea> + <div id="console"> + ${model.consoleOutput.map(log => { + if (typeof log === 'object' && log !== null) { + return `<div class="log-item"><details><summary>${Object.prototype.toString.call(log)}</summary><pre>${JSON.stringify(log, null, 2)}</pre></details></div>`; + } + return `<div class="log-item">${log}</div>`; + }).join('')} + </div> + `; + + const update = (msg, model) => { + switch (msg.type) { + case 'CODE_CHANGED': + return { ...model, code: msg.payload }; + + case 'RUN_CODE': + return model; + + case 'CONSOLE_LOG': + return { ...model, consoleOutput: [...model.consoleOutput, ...msg.payload] }; + + case 'CLEAR': + if (confirm('Are you sure you want to reset the playground?')) { + window.location.hash = ''; + window.location.reload(); + } + return model; + + case 'CLEAR_CONSOLE': + return { ...model, consoleOutput: [] }; + + case 'SHARE': + case 'DOWNLOAD': + return model; + + case 'SANDBOX_READY': + return { ...model, sandboxReady: true }; + + default: + return model; } - - // Restore browser's console.log - console.log = originalConsoleLog; - } - - function downloadCodeAndEditor() { - const codeInput = document.getElementById('codeInput').value; - const htmlContent = document.documentElement.outerHTML.replace( - /<textarea id="codeInput"[^>]*>.*<\/textarea>/, - `<textarea id="codeInput">${codeInput}</textarea>` - ); - - const blob = new Blob([htmlContent], { type: 'text/html' }); - const url = URL.createObjectURL(blob); - const a = document.createElement('a'); - a.href = url; - a.download = 'code_editor.html'; - document.body.appendChild(a); - a.click(); - document.body.removeChild(a); - URL.revokeObjectURL(url); - } - - function shareCode() { - const code = document.getElementById('codeInput').value; - const encodedCode = btoa(encodeURIComponent(code)); - window.location.hash = encodedCode; - window.prompt("Copy the URL to share.\nBe warned! Very long URLs don't share wicked well, sometimes.", window.location.href); - } - - function clearEverything() { - if (!confirm('Are you sure you want to reset the playground?')) { - return; - } else { - window.location.hash = ''; - window.location.reload(); + }; + + /** + * ---------------------------------------------------------------- + * Application Core & Side-Effect Handling + * ---------------------------------------------------------------- + */ + + let model = null; + const appContainer = document.getElementById('app'); + const sandbox = document.getElementById('sandbox'); + + const dispatch = (msg) => { + const newModel = update(msg, model); + handleSideEffects(msg, newModel); + model = newModel; + render(model); + }; + + const handleSideEffects = (msg, model) => { + if (msg.type === 'RUN_CODE') { + if (!model.sandboxReady) return; + dispatch({ type: 'CLEAR_CONSOLE' }); + sandbox.contentWindow.postMessage({ code: model.code }, '*'); + } else if (msg.type === 'SHARE') { + const encodedCode = btoa(encodeURIComponent(model.code)); + window.location.hash = encodedCode; + window.prompt("Copy the URL to share.", window.location.href); + } else if (msg.type === 'DOWNLOAD') { + const htmlContent = document.documentElement.outerHTML.replace( + /<textarea id="codeInput"[^>]*>.*<\/textarea>/, + `<textarea id="codeInput">${model.code}</textarea>` + ); + const blob = new Blob([htmlContent], { type: 'text/html' }); + const url = URL.createObjectURL(blob); + const a = document.createElement('a'); + a.href = url; + a.download = 'playground.html'; + a.click(); + URL.revokeObjectURL(url); } - } - - function loadCodeFromHash() { - const hash = window.location.hash.substring(1); - if (hash) { - try { - const decodedCode = decodeURIComponent(atob(hash)); - document.getElementById('codeInput').value = decodedCode; - } catch (error) { - console.error('Failed to decode the URL hash:', error); + }; + + const render = (model) => { + const focusedElementId = document.activeElement?.id; + const selectionStart = document.activeElement?.selectionStart; + const selectionEnd = document.activeElement?.selectionEnd; + + appContainer.innerHTML = view(model); + + if (focusedElementId === 'codeInput') { + const focusedElement = document.getElementById(focusedElementId); + if (focusedElement) { + focusedElement.focus(); + if (typeof selectionStart === 'number') { + focusedElement.selectionStart = selectionStart; + focusedElement.selectionEnd = selectionEnd; + } } } - } + }; - function help() { - const helpText = ` - Welcome to the JavaScript Playground! Here are some tips to get you started: - - 1. Enter your JavaScript code in the textarea. - 2. Click the "Run Code" button to execute your code. - 3. The console output will be displayed below the textarea. - 4. Click the "Clear" button to reset the playground. - 5. Click the "Download" button to save your code and editor as an HTML file. - 6. Click the "Share" button to generate a URL to share your code with others. - 7. You can also press "Cmd + Enter" to run your code. - 8. There's an empty div above the buttons with the id "playground" - 9. You can mount stuff to it using the "mount" function, for more info run "mountHelp()" - 10. You can use the "clear()" function to clear the content's of the console. - - Go nuts! Share scrappy fiddles! - `; - console.log(helpText); - } - - function clear() { - document.getElementById('console').innerHTML = ''; - } - - function mountHelp() { - console.log(` - The mount function is used to mount stuff to the playground div. - It takes a function as an argument, which in turn receives the playground div as an argument. - Before mounting, it clears the playground div. - Here's an example of how to use the mount function: - - mount(playground => { - const h1 = document.createElement('h1'); - h1.textContent = 'Hell is empty and all the devils are here.'; - playground.appendChild(h1); - }); - - This will add an h1 element to the playground div. - `); - } - - function mount(mountFunction) { - const playground = document.getElementById('playground'); - if (!playground) { - console.error("Couldn't find a div with the id 'playground'! You may need to reload the page."); - return; + const handleKeyDown = (event) => { + if (event.key === 'Tab') { + event.preventDefault(); + const start = event.target.selectionStart; + const end = event.target.selectionEnd; + event.target.value = event.target.value.substring(0, start) + " " + event.target.value.substring(end); + dispatch({ type: 'CODE_CHANGED', payload: event.target.value }); + event.target.selectionStart = event.target.selectionEnd = start + 2; } + if (event.metaKey && event.key === 'Enter') { + event.preventDefault(); + dispatch({ type: 'RUN_CODE' }); + } + }; + + /** + * ---------------------------------------------------------------- + * Sandbox Initialization + * ---------------------------------------------------------------- + */ + + const sandboxSrc = ` + <script> + const pipe = ${pipe.toString()}; + const compose = ${compose.toString()}; + + const originalConsoleLog = console.log; + console.log = (...args) => { + parent.postMessage({ type: 'CONSOLE_LOG', payload: args }, '*'); + }; + + window.addEventListener('message', (event) => { + try { + eval(event.data.code); + } catch (e) { + console.log(e.toString()); + } + }); + <\/script> + `; - if (playground.innerHTML.trim() !== "") { - playground.innerHTML = ""; + window.addEventListener('message', (event) => { + if (event.source === sandbox.contentWindow && event.data.type === 'CONSOLE_LOG') { + dispatch(event.data); } - mountFunction(playground); + }); + + /** + * ---------------------------------------------------------------- + * Application Entry Point + * ---------------------------------------------------------------- + */ + + const hash = window.location.hash.substring(1); + if (hash) { + try { + const decodedCode = decodeURIComponent(atob(hash)); + model = { ...init, code: decodedCode }; + } catch (error) { + console.error('Failed to decode the URL hash:', error); + model = init; + } + } else { + model = init; } + render(model); - document.getElementById('codeInput').addEventListener('keydown', function(event) { - if (event.metaKey && event.key === 'Enter') { - event.preventDefault(); - evaluateCode(); - } - }); + sandbox.onload = () => { + dispatch({ type: 'SANDBOX_READY' }); + }; + + sandbox.srcdoc = sandboxSrc; - window.onload = loadCodeFromHash; </script> </body> -</html> +</html> \ No newline at end of file |