wp-block-to-html/examples/incremental-rendering.html at main · madebyaris/wp-block-to-html · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Incremental Rendering Example - WP Block to HTML</title>
  <style>
    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      line-height: 1.6;
    }
    h1 {
      border-bottom: 1px solid #eee;
      padding-bottom: 10px;
    }
    .options {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin: 20px 0;
      padding: 15px;
      background: #f7f7f7;
      border-radius: 5px;
    }
    .option {
      display: flex;
      flex-direction: column;
    }
    label {
      font-weight: bold;
      margin-bottom: 5px;
    }
    button {
      background: #0073aa;
      color: white;
      border: none;
      padding: 10px 15px;
      border-radius: 4px;
      cursor: pointer;
      font-size: 14px;
      margin: 15px 0;
    }
    button:hover {
      background: #005177;
    }
    #content {
      border: 1px solid #ddd;
      padding: 15px;
      margin-top: 20px;
      min-height: 200px;
    }
    .progress {
      margin: 10px 0;
      height: 5px;
      width: 100%;
      background: #eee;
    }
    .progress-bar {
      height: 100%;
      width: 0%;
      background: #0073aa;
      transition: width 0.3s;
    }
    .wp-block-incremental-placeholder {
      background: #f9f9f9;
      border: 1px dashed #ddd;
      padding: 20px;
      text-align: center;
      margin: 10px 0;
      color: #777;
    }
    .stats {
      font-size: 14px;
      color: #666;
      margin-top: 20px;
    }
  </style>
</head>
<body>
  <h1>Incremental Rendering Example</h1>
  <p>This example demonstrates how to use the incremental rendering functionality in the WP Block to HTML converter to progressively render large content sets without blocking the UI.</p>

  <div class="options">
    <div class="option">
      <label for="numBlocks">Number of Blocks</label>
      <input type="number" id="numBlocks" min="10" max="1000" value="100">
    </div>
    <div class="option">
      <label for="initialRender">Initial Render Count</label>
      <input type="number" id="initialRender" min="1" max="50" value="10">
    </div>
    <div class="option">
      <label for="batchSize">Batch Size</label>
      <input type="number" id="batchSize" min="1" max="20" value="5">
    </div>
    <div class="option">
      <label for="batchDelay">Delay (ms)</label>
      <input type="number" id="batchDelay" min="0" max="1000" value="50">
    </div>
  </div>

  <button id="render">Render Content</button>

  <div class="progress">
    <div class="progress-bar" id="progressBar"></div>
  </div>

  <div id="content"></div>

  <div class="stats" id="stats"></div>

  <script type="module">
    // Import the library
    // In a real project, you would import from 'wp-block-to-html'
    import { convertBlocks } from '../dist/index.mjs';
    import { DEFAULT_INCREMENTAL_OPTIONS } from '../dist/incremental.mjs';

    // Generate sample blocks
    function generateBlocks(count) {
      const blocks = [];
      for (let i = 0; i < count; i++) {
        // Create different block types for variety
        const blockType = i % 5 === 0 ? 'core/heading' :
                        i % 3 === 0 ? 'core/image' : 'core/paragraph';

        let block;
        if (blockType === 'core/heading') {
          block = {
            blockName: 'core/heading',
            attrs: { level: 2, content: `Heading ${i}` },
            innerBlocks: [],
            innerHTML: `<h2>Heading ${i}</h2>`,
            innerContent: [`<h2>Heading ${i}</h2>`]
          };
        } else if (blockType === 'core/image') {
          block = {
            blockName: 'core/image',
            attrs: {
              url: `https://picsum.photos/600/400?random=${i}`,
              alt: `Sample image ${i}`
            },
            innerBlocks: [],
            innerHTML: `<figure><img src="https://picsum.photos/600/400?random=${i}" alt="Sample image ${i}"><figcaption>Image ${i}</figcaption></figure>`,
            innerContent: [`<figure><img src="https://picsum.photos/600/400?random=${i}" alt="Sample image ${i}"><figcaption>Image ${i}</figcaption></figure>`]
          };
        } else {
          block = {
            blockName: 'core/paragraph',
            attrs: {},
            innerBlocks: [],
            innerHTML: `<p>This is paragraph ${i}. It contains some sample text to demonstrate incremental rendering with the WordPress Block to HTML converter. This helps prevent UI blocking with large content sets.</p>`,
            innerContent: [`<p>This is paragraph ${i}. It contains some sample text to demonstrate incremental rendering with the WordPress Block to HTML converter. This helps prevent UI blocking with large content sets.</p>`]
          };
        }

        blocks.push(block);
      }
      return blocks;
    }

    // Set up the UI
    document.getElementById('render').addEventListener('click', () => {
      const numBlocks = parseInt(document.getElementById('numBlocks').value, 10);
      const initialRender = parseInt(document.getElementById('initialRender').value, 10);
      const batchSize = parseInt(document.getElementById('batchSize').value, 10);
      const batchDelay = parseInt(document.getElementById('batchDelay').value, 10);

      const blocks = generateBlocks(numBlocks);
      const contentEl = document.getElementById('content');
      const progressBar = document.getElementById('progressBar');
      const statsEl = document.getElementById('stats');

      // Clear previous content
      contentEl.innerHTML = '';
      statsEl.innerHTML = 'Starting render...';
      progressBar.style.width = '0%';

      const startTime = performance.now();

      // Convert blocks with incremental rendering
      const html = convertBlocks(blocks, {
        incrementalOptions: {
          enabled: true,
          initialRenderCount: initialRender,
          batchSize: batchSize,
          batchDelay: batchDelay
        },
        cssFramework: 'bootstrap'  // You can change this to 'tailwind' or any other supported framework
      });

      // Inject the HTML
      contentEl.innerHTML = html;

      // Update progress bar as blocks are rendered
      let processed = initialRender;
      const updateProgress = () => {
        const percent = Math.min(100, Math.round((processed / numBlocks) * 100));
        progressBar.style.width = `${percent}%`;

        if (processed >= numBlocks) {
          const endTime = performance.now();
          statsEl.innerHTML = `
            Rendered ${numBlocks} blocks in ${Math.round(endTime - startTime)}ms<br>
            Initial render: ${initialRender} blocks<br>
            Batch size: ${batchSize} blocks<br>
            Batch delay: ${batchDelay}ms
          `;
        } else {
          statsEl.innerHTML = `Rendered ${processed} of ${numBlocks} blocks...`;
        }
      };

      // Process remaining blocks
      if (processed < numBlocks) {
        updateProgress();

        // This part would normally be handled by the library's client-side script
        // but for demo purposes, we're implementing it inline
        const remainingBlocks = blocks.slice(initialRender);
        let currentBatch = 0;

        const processNextBatch = () => {
          const start = currentBatch * batchSize;
          const end = Math.min(start + batchSize, remainingBlocks.length);
          if (start >= remainingBlocks.length) return;

          const batchBlocks = remainingBlocks.slice(start, end);

          // Process this batch
          batchBlocks.forEach((block, index) => {
            const blockIndex = initialRender + start + index;
            const placeholderId = `incremental-block-${start + index}`;
            const placeholder = document.getElementById(placeholderId);

            if (placeholder) {
              // Replace placeholder with actual content
              const blockHtml = convertBlocks([block]);
              placeholder.outerHTML = blockHtml;
              processed++;
            }
          });

          updateProgress();
          currentBatch++;

          // Schedule next batch
          if (currentBatch * batchSize < remainingBlocks.length) {
            setTimeout(processNextBatch, batchDelay);
          }
        };

        // Start processing
        setTimeout(processNextBatch, batchDelay);
      }
    });
  </script>
</body>
</html>