runCode()

in src/p5js_playground/playground.tsx [152:197]
44 lines of code
6 McCabe index (conditional complexity)

  runCode(code: string) {
    this.reportedError = false;
    this.lastError = '';

    const htmlContent = `
                <!DOCTYPE html>
                <html lang="en">
                <head>
                    <meta charset="UTF-8">
                    <meta name="viewport" content="width=device-width, initial-scale=1.0">
                    <title>p5.js Sketch</title>
                    <style>
                        body { margin: 0; overflow: hidden; display: flex; justify-content: center; align-items: center; height: 100vh; background-color: #f8f9fa; }
                        main { display: flex; justify-content: center; align-items: center; }
                        .console { position: absolute; bottom: 0; left: 0; width: 100%; background: rgba(0, 0, 0, 0.7); padding: 1em; margin: 0; color: red; font-family: monospace;}
                    </style>
                    <script src="${p5jsCdnUrl}"></script>
                    <script>
                      window.addEventListener('message', (event) => {
                          if (event.data === 'stop' && typeof noLoop === 'function') { noLoop(); console.log('Sketch stopped (noLoop)'); }
                          else if (event.data === 'resume' && typeof loop === 'function') { loop(); console.log('Sketch resumed (loop)'); }
                      }, false);
                    </script>
                </head>
                <body>
                    <script>
                        // Basic error handling within the iframe
                        try {
                            ${code}
                        } catch (error) {
                            console.error("Error in sketch:", error);
                            parent.postMessage(
                              JSON.stringify({
                                message: error.toString()
                              })
                            );
                            document.body.innerHTML = '<pre class="console">Error: ' + error.message + '\\nCheck the browser console for details or ask Gemini to fix it.</pre>';
                        }
                    </script>
                </body>
                </html>
            `;

    this.previewFrame.setAttribute('srcdoc', htmlContent);
    this.codeNeedsReload = false;
  }