Press n or j to go to the next uncovered block, b, p or k for the previous block.
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2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 | /** * GFMR Main Module * * GitHub Flavored Markdown Renderer main functionality * Provides syntax highlighting and Mermaid diagrams * * @package WpGfmRenderer * @since 1.0.0 */ (function (global) { "use strict"; // Prevent duplicate execution if (global.gfmrMainInitialized) return; global.gfmrMainInitialized = true; console.log("[GFMR Main] Initialization started"); /** * URL builder helper function * Local asset URL construction compliant with WordPress.org distribution * * @param {string} path - Relative path (e.g., 'assets/libs/shiki/shiki.min.js') * @returns {string} - Complete URL */ function buildAssetUrl(path) { // Try to get plugin URL from wpGfmConfig (localized from PHP) let baseUrl = window.wpGfmConfig?.pluginUrl; // Fallback: detect from current script location if (!baseUrl) { const currentScript = document.currentScript; if (currentScript && currentScript.src) { // Extract base path from current script URL const scriptUrl = currentScript.src; const match = scriptUrl.match(/(.+\/wp-content\/plugins\/[^/]+)/); baseUrl = match ? match[1] + "/" : "/wp-content/plugins/markdown-renderer-for-github/"; } else { // Last resort fallback baseUrl = "/wp-content/plugins/markdown-renderer-for-github/"; } console.log("[WP GFM] Using fallback base URL:", baseUrl); } // Normalize trailing / in base URL const normalizedBase = baseUrl.replace(/\/+$/, ""); // Normalize leading / in path const normalizedPath = path.replace(/^\/+/, ""); return `${normalizedBase}/${normalizedPath}`; } // Expose globally (available in other files too) if (!global.wpGfmBuildAssetUrl) { global.wpGfmBuildAssetUrl = buildAssetUrl; } const hotfix = { shikiLoaded: false, mermaidLoaded: false, katexLoaded: false, processedElements: new WeakSet(), processedMathElements: new WeakSet(), isProcessing: false, // Processing flag to prevent recursion initialized: false, // Initialization completion flag // Shiki CDN loading (optimized version) async loadShiki() { if (global.shiki && global.wpGfmShikiHighlighter) { this.shikiLoaded = true; console.log("[WP GFM v2 Hotfix] Shiki already loaded"); return; } console.log("[WP GFM v2 Hotfix] Loading Shiki..."); return new Promise((resolve, reject) => { const script = document.createElement("script"); script.src = buildAssetUrl("assets/libs/shiki/shiki.min.js"); script.onload = async () => { try { // Get theme from wpGfmConfig/wpGfmSettings or auto-detect from system let shikiTheme = window.wpGfmConfig?.theme?.shiki_theme ?? window.wpGfmSettings?.theme?.shiki_theme ?? (window.matchMedia?.('(prefers-color-scheme: dark)').matches ? 'github-dark' : 'github-light'); // Handle 'auto' theme - detect system preference if (shikiTheme === "auto") { const prefersDark = window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches; shikiTheme = prefersDark ? "github-dark" : "github-light"; console.log( "[WP GFM v2 Hotfix] Auto theme detected, using:", shikiTheme, ); } console.log("[WP GFM v2 Hotfix] Using Shiki theme:", shikiTheme); // Apply CSS class to body for theme-aware styling if (shikiTheme === "github-dark") { document.body.classList.add("gfmr-dark"); document.body.classList.remove("gfmr-light"); } else { document.body.classList.add("gfmr-light"); document.body.classList.remove("gfmr-dark"); } // Initialize Shiki highlighter with extended language list global.wpGfmShikiHighlighter = await global.shiki.getHighlighter({ theme: shikiTheme, langs: [ "javascript", "js", "typescript", "ts", "python", "py", "java", "cpp", "c", "csharp", "cs", "html", "css", "scss", "sass", "json", "xml", "yaml", "yml", "bash", "shell", "sh", "zsh", "php", "ruby", "go", "rust", "sql", "markdown", "md", "diff", ], }); this.shikiLoaded = true; console.log("[WP GFM v2 Hotfix] Shiki loading completed"); resolve(); } catch (error) { console.error( "[WP GFM v2 Hotfix] Shiki initialization error:", error, ); reject(error); } }; script.onerror = (error) => { console.error("[WP GFM v2 Hotfix] Shiki loading failed:", error); console.error("Script URL:", script.src); // Still resolve to allow degraded functionality resolve(); }; document.head.appendChild(script); }); }, // Mermaid CDN loading (optimized version) async loadMermaid() { if (global.mermaid && global.mermaid.render) { this.mermaidLoaded = true; console.log("[WP GFM v2 Hotfix] Mermaid already loaded"); return; } console.log("[WP GFM v2 Hotfix] Loading Mermaid..."); return new Promise((resolve, reject) => { const script = document.createElement("script"); script.src = buildAssetUrl("assets/libs/mermaid/mermaid.min.js"); script.onload = () => { try { global.mermaid.initialize({ startOnLoad: false, theme: "default", // Use 'loose' instead of 'sandbox' to render inline SVG // This fixes Japanese text encoding issues (sandbox uses data URLs) securityLevel: "loose", fontFamily: "monospace", // Centering configuration for diagrams flowchart: { useMaxWidth: false, htmlLabels: true, curve: "basis", }, sequence: { useMaxWidth: true, height: 65, }, class: { useMaxWidth: true, }, state: { useMaxWidth: false, }, er: { useMaxWidth: false, }, gantt: { useMaxWidth: true, }, gitGraph: { useMaxWidth: false, mainLineWidth: 2, mainBranchOrder: 0, }, }); this.mermaidLoaded = true; console.log("[WP GFM v2 Hotfix] Mermaid loading completed"); resolve(); } catch (error) { console.error( "[WP GFM v2 Hotfix] Mermaid initialization error:", error, ); reject(error); } }; script.onerror = (error) => { console.error("[WP GFM v2 Hotfix] Mermaid loading failed:", error); console.error("Script URL:", script.src); // Still resolve to allow degraded functionality resolve(); }; document.head.appendChild(script); }); }, // KaTeX CSS loading async loadKaTeXCSS() { return new Promise((resolve) => { // Check if already loaded if (document.querySelector('link[href*="katex"]')) { resolve(); return; } const link = document.createElement("link"); link.rel = "stylesheet"; link.href = buildAssetUrl("assets/libs/katex/katex.min.css"); link.onload = resolve; link.onerror = () => { console.warn("[WP GFM v2 Hotfix] KaTeX CSS loading failed"); resolve(); }; document.head.appendChild(link); }); }, // KaTeX library loading (conditional) async loadKaTeX() { if (global.katex) { this.katexLoaded = true; console.log("[WP GFM v2 Hotfix] KaTeX already loaded"); return; } console.log("[WP GFM v2 Hotfix] Loading KaTeX..."); // Load CSS first await this.loadKaTeXCSS(); return new Promise((resolve) => { const script = document.createElement("script"); script.src = buildAssetUrl("assets/libs/katex/katex.min.js"); script.onload = () => { this.katexLoaded = true; console.log("[WP GFM v2 Hotfix] KaTeX loading completed"); resolve(); }; script.onerror = (error) => { console.error("[WP GFM v2 Hotfix] KaTeX loading failed:", error); // Still resolve to allow degraded functionality resolve(); }; document.head.appendChild(script); }); }, // Check if page has math content hasMathContent() { // Check for existing math elements const mathElements = document.querySelectorAll( "[data-latex], .latex-formula, .katex, .math-tex, .gfmr-math", ); if (mathElements.length > 0) { return true; } // Check for math patterns in text content const content = document.body.textContent || ""; const patterns = [ /\$\$[\s\S]+?\$\$/, // Block math: $$...$$ /\$[^$\n]+\$/, // Inline math: $...$ /\\\([^)]+\\\)/, // \(...\) /\\\[[\s\S]+?\\\]/, // \[...\] /\[latex\][\s\S]*?\[\/latex\]/i, // WordPress shortcode ]; return patterns.some((p) => p.test(content)); }, // Check if page has chart content hasChartContent() { // Check for chart elements const chartElements = document.querySelectorAll( 'code[class*="language-chart"], code.language-chart, code.language-chart-pro', ); return chartElements.length > 0; }, // Load gfmr-charts.js (lazy loading) async loadGfmrCharts() { if (global.wpGfmCharts) { console.log("[WP GFM v2 Hotfix] Charts module already loaded"); return; } console.log("[WP GFM v2 Hotfix] Loading Charts module..."); return new Promise((resolve, reject) => { const script = document.createElement("script"); script.src = buildAssetUrl("assets/js/gfmr-charts.js"); script.onload = () => { if (typeof global.wpGfmInitializeCharts === "function") { global.wpGfmInitializeCharts(); console.log("[WP GFM v2 Hotfix] Charts module loaded successfully"); resolve(); } else { console.error("[WP GFM v2 Hotfix] Charts module initialization function not found"); reject(new Error("Charts initialization failed")); } }; script.onerror = (error) => { console.error("[WP GFM v2 Hotfix] Charts module loading failed:", error); reject(error); }; document.head.appendChild(script); }); }, // Render block math ($$...$$) renderBlockMath() { if (!global.katex) return; const containers = document.querySelectorAll( ".gfmr-markdown-rendered, .entry-content, .post-content, article", ); containers.forEach((container) => { const walker = document.createTreeWalker( container, NodeFilter.SHOW_TEXT, { acceptNode: (node) => { // Skip if already processed if (node.parentElement?.closest(".katex")) { return NodeFilter.FILTER_REJECT; } // Skip if inside code/pre elements if (node.parentElement?.closest("code, pre")) { return NodeFilter.FILTER_REJECT; } return NodeFilter.FILTER_ACCEPT; }, }, ); const nodesToProcess = []; let node; while ((node = walker.nextNode()) !== null) { if (/\$\$[\s\S]+?\$\$/.test(node.textContent)) { nodesToProcess.push(node); } } nodesToProcess.forEach((textNode) => { this.processBlockMathNode(textNode); }); }); }, // Process a single text node for block math processBlockMathNode(textNode) { if (!global.katex) return; if (this.processedMathElements.has(textNode)) return; const text = textNode.textContent; const blockMathRegex = /\$\$([\s\S]+?)\$\$/g; let match; let lastIndex = 0; const fragments = []; while ((match = blockMathRegex.exec(text)) !== null) { // Add text before the match if (match.index > lastIndex) { fragments.push( document.createTextNode(text.slice(lastIndex, match.index)), ); } // Create math element const mathContainer = document.createElement("div"); mathContainer.className = "gfmr-math gfmr-math-block"; try { global.katex.render(match[1].trim(), mathContainer, { displayMode: true, throwOnError: false, output: "html", }); } catch (error) { console.warn("[WP GFM v2 Hotfix] KaTeX render error:", error); mathContainer.textContent = match[0]; } fragments.push(mathContainer); lastIndex = blockMathRegex.lastIndex; } // Add remaining text if (lastIndex < text.length) { fragments.push(document.createTextNode(text.slice(lastIndex))); } // Replace the text node if we found matches if (fragments.length > 0 && lastIndex > 0) { const parent = textNode.parentNode; fragments.forEach((fragment) => { parent.insertBefore(fragment, textNode); }); parent.removeChild(textNode); this.processedMathElements.add(textNode); } }, // Render inline math ($...$) renderInlineMath() { if (!global.katex) return; const containers = document.querySelectorAll( ".gfmr-markdown-rendered, .entry-content, .post-content, article", ); containers.forEach((container) => { const walker = document.createTreeWalker( container, NodeFilter.SHOW_TEXT, { acceptNode: (node) => { // Skip if already processed if (node.parentElement?.closest(".katex, .gfmr-math")) { return NodeFilter.FILTER_REJECT; } // Skip if inside code/pre elements if (node.parentElement?.closest("code, pre")) { return NodeFilter.FILTER_REJECT; } return NodeFilter.FILTER_ACCEPT; }, }, ); const nodesToProcess = []; let node; while ((node = walker.nextNode()) !== null) { // Match $...$ but not $$...$$ if (/(?<!\$)\$(?!\$)[^$\n]+\$(?!\$)/.test(node.textContent)) { nodesToProcess.push(node); } } nodesToProcess.forEach((textNode) => { this.processInlineMathNode(textNode); }); }); }, // Process a single text node for inline math processInlineMathNode(textNode) { if (!global.katex) return; if (this.processedMathElements.has(textNode)) return; const text = textNode.textContent; // Match $...$ but not $$...$$ const inlineMathRegex = /(?<!\$)\$(?!\$)([^$\n]+)\$(?!\$)/g; let match; let lastIndex = 0; const fragments = []; while ((match = inlineMathRegex.exec(text)) !== null) { // Add text before the match if (match.index > lastIndex) { fragments.push( document.createTextNode(text.slice(lastIndex, match.index)), ); } // Create math element const mathContainer = document.createElement("span"); mathContainer.className = "gfmr-math gfmr-math-inline"; try { global.katex.render(match[1].trim(), mathContainer, { displayMode: false, throwOnError: false, output: "html", }); } catch (error) { console.warn("[WP GFM v2 Hotfix] KaTeX inline render error:", error); mathContainer.textContent = match[0]; } fragments.push(mathContainer); lastIndex = inlineMathRegex.lastIndex; } // Add remaining text if (lastIndex < text.length) { fragments.push(document.createTextNode(text.slice(lastIndex))); } // Replace the text node if we found matches if (fragments.length > 0 && lastIndex > 0) { const parent = textNode.parentNode; fragments.forEach((fragment) => { parent.insertBefore(fragment, textNode); }); parent.removeChild(textNode); this.processedMathElements.add(textNode); } }, // Render LaTeX shortcodes [latex]...[/latex] renderLatexShortcodes() { if (!global.katex) return; const containers = document.querySelectorAll( ".gfmr-markdown-rendered, .entry-content, .post-content, article", ); containers.forEach((container) => { const walker = document.createTreeWalker( container, NodeFilter.SHOW_TEXT, { acceptNode: (node) => { // Skip if already processed if (node.parentElement?.closest(".katex, .gfmr-math")) { return NodeFilter.FILTER_REJECT; } // Skip if inside code/pre elements if (node.parentElement?.closest("code, pre")) { return NodeFilter.FILTER_REJECT; } return NodeFilter.FILTER_ACCEPT; }, }, ); const nodesToProcess = []; let node; while ((node = walker.nextNode()) !== null) { if (/\[latex\][\s\S]*?\[\/latex\]/i.test(node.textContent)) { nodesToProcess.push(node); } } nodesToProcess.forEach((textNode) => { this.processLatexShortcodeNode(textNode); }); }); }, // Process a single text node for [latex] shortcodes processLatexShortcodeNode(textNode) { if (!global.katex) return; if (this.processedMathElements.has(textNode)) return; const text = textNode.textContent; const shortcodeRegex = /\[latex\]([\s\S]*?)\[\/latex\]/gi; let match; let lastIndex = 0; const fragments = []; while ((match = shortcodeRegex.exec(text)) !== null) { // Add text before the match if (match.index > lastIndex) { fragments.push( document.createTextNode(text.slice(lastIndex, match.index)), ); } // Create math element const mathContainer = document.createElement("span"); mathContainer.className = "gfmr-math gfmr-math-shortcode"; try { global.katex.render(match[1].trim(), mathContainer, { displayMode: false, throwOnError: false, output: "html", }); } catch (error) { console.warn( "[WP GFM v2 Hotfix] KaTeX shortcode render error:", error, ); mathContainer.textContent = match[0]; } fragments.push(mathContainer); lastIndex = shortcodeRegex.lastIndex; } // Add remaining text if (lastIndex < text.length) { fragments.push(document.createTextNode(text.slice(lastIndex))); } // Replace the text node if we found matches if (fragments.length > 0 && lastIndex > 0) { const parent = textNode.parentNode; fragments.forEach((fragment) => { parent.insertBefore(fragment, textNode); }); parent.removeChild(textNode); this.processedMathElements.add(textNode); } }, // Main math rendering function async renderMathFormulas() { if (!global.katex) { console.warn( "[WP GFM v2 Hotfix] KaTeX not loaded, skipping math rendering", ); return; } console.log("[WP GFM v2 Hotfix] Starting math formula rendering"); // Render in order: block first, then inline, then shortcodes this.renderBlockMath(); this.renderInlineMath(); this.renderLatexShortcodes(); console.log("[WP GFM v2 Hotfix] Math formula rendering completed"); }, // Add copy button addCopyButton(container, content, type = "code") { // Check for existing copy button if (container.querySelector(".gfmr-copy-button")) { return; } // Load constants const constants = window.wpGfmConstants || {}; const CLASSES = constants.CLASSES || { copyButton: "gfmr-copy-button", copyButtonCode: "gfmr-copy-button--code", copyButtonMermaid: "gfmr-copy-button--mermaid", copyButtonContainer: "gfmr-copy-button-container", copyButtonSuccess: "gfmr-copy-button--success", copyButtonError: "gfmr-copy-button--error", }; const ICONS = constants.ICONS || {}; const LABELS = constants.LABELS || { copy: "Copy", copied: "Copied!", failed: "Failed", }; // Create copy button container const buttonContainer = document.createElement("div"); buttonContainer.className = CLASSES.copyButtonContainer; buttonContainer.style.cssText = ` position: absolute; top: 8px; right: 8px; z-index: 10; `; // Create copy button const button = document.createElement("button"); const typeClass = type === "mermaid" ? CLASSES.copyButtonMermaid : CLASSES.copyButtonCode; button.className = `${CLASSES.copyButton} ${typeClass}`; button.setAttribute("aria-label", "Copy code"); // Add icon and text const copyIcon = ICONS.copy || `<svg width="16" height="16" viewBox="0 0 16 16" fill="currentColor"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path> <path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg>`; button.innerHTML = ` ${copyIcon} <span>${LABELS.copy}</span> `; // Hover effects are now handled by CSS // Click event handler button.addEventListener("click", async () => { try { // Get content to copy let textToCopy = ""; if (type === "mermaid") { // For Mermaid, use original code const mermaidCode = container.querySelector(".mermaid-source"); textToCopy = mermaidCode ? mermaidCode.textContent : content; } else { // For code blocks textToCopy = content || container.textContent; } // Copy to clipboard if (navigator.clipboard && window.isSecureContext) { await navigator.clipboard.writeText(textToCopy); } else { // Fallback for older browsers const textarea = document.createElement("textarea"); textarea.value = textToCopy; textarea.style.position = "fixed"; textarea.style.left = "-999999px"; document.body.appendChild(textarea); textarea.select(); document.execCommand("copy"); document.body.removeChild(textarea); } // Success feedback const originalHTML = button.innerHTML; const successIcon = ICONS.success || `<svg width="16" height="16" viewBox="0 0 16 16" fill="currentColor"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg>`; button.innerHTML = ` ${successIcon} <span>${LABELS.copied}</span> `; button.classList.add(CLASSES.copyButtonSuccess); // Reset to original state after 2 seconds setTimeout(() => { button.innerHTML = originalHTML; button.classList.remove(CLASSES.copyButtonSuccess); }, constants.ANIMATIONS?.feedbackDuration || 2000); } catch (err) { console.error("Copy failed:", err); const originalHTML = button.innerHTML; const errorIcon = ICONS.error || `<svg width="16" height="16" viewBox="0 0 16 16" fill="currentColor"> <path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg>`; button.innerHTML = ` ${errorIcon} <span>${LABELS.failed}</span> `; button.classList.add(CLASSES.copyButtonError); setTimeout(() => { button.innerHTML = originalHTML; button.classList.remove(CLASSES.copyButtonError); }, constants.ANIMATIONS?.feedbackDuration || 2000); } }); buttonContainer.appendChild(button); // Set container position to relative (only if not already set) if (!container.style.position || container.style.position === "static") { container.style.position = "relative"; } // Add button to container container.appendChild(buttonContainer); }, /** * Add lightbox trigger to Mermaid diagram container * @param {HTMLElement} container - Outer container * @param {HTMLElement} innerContainer - Inner container with SVG */ addLightboxTrigger(container, innerContainer) { // Set ARIA attributes (cursor style is defined in CSS) container.setAttribute('role', 'button'); container.setAttribute('tabindex', '0'); container.setAttribute('aria-label', 'Click to expand diagram'); container.setAttribute('aria-haspopup', 'dialog'); container.setAttribute('aria-expanded', 'false'); let touchEndTime = 0; const openLightbox = () => { if (window.wpGfm?.lightbox) { window.wpGfm.lightbox.open(innerContainer); } }; // Record touch end time container.addEventListener('touchend', () => { touchEndTime = Date.now(); }); // Click handler (ignore clicks immediately after touch) container.addEventListener('click', (e) => { if (Date.now() - touchEndTime < 300) return; if (e.target.closest('.gfmr-copy-button')) return; openLightbox(); }); // Keyboard accessibility container.addEventListener('keydown', (e) => { if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); openLightbox(); } }); }, // Language detection - delegate to external module detectLanguage(element) { if (window.wpGfmLanguageDetector) { return window.wpGfmLanguageDetector.detectLanguage(element); } // Fallback if module not loaded const className = element.className || ""; const match = className.match(/language-(\w+)/); return match ? match[1] : "plaintext"; }, // Check if element is already syntax highlighted - delegate to external module isAlreadyHighlighted(element) { if (window.wpGfmLanguageDetector) { return window.wpGfmLanguageDetector.isAlreadyHighlighted(element); } // Fallback if module not loaded const hasShikiSpans = element.querySelector( 'span.line, span[style*="color:"]' ); const hasHighlightClass = element.classList.contains("hljs") || element.classList.contains("shiki"); return !!(hasShikiSpans || hasHighlightClass); }, /** * Apply diff highlighting classes to code block. * Adds CSS classes to lines based on their diff prefix (+, -, @@). * * @param {HTMLElement} container - The pre element containing highlighted code */ applyDiffHighlighting(container) { // Shiki output structure: <pre class="shiki"> > <code> > <span class="line"> const codeElement = container.querySelector('code'); if (!codeElement) { return; // Silent return - not a valid Shiki output } const lines = codeElement.querySelectorAll('.line'); if (lines.length === 0) { return; // Silent return - no line elements found } lines.forEach(line => { const text = (line.textContent || '').trim(); // Remove empty lines (including whitespace-only lines) if (!text) { line.remove(); return; } // Skip file header lines (+++, ---, diff --git, index) if (text.startsWith('+') && !text.startsWith('+++')) { line.classList.add('diff', 'add'); } else if (text.startsWith('-') && !text.startsWith('---')) { line.classList.add('diff', 'remove'); } else if (text.startsWith('@@')) { line.classList.add('diff', 'hunk'); } // Other lines (context, headers) remain unstyled }); // Remove all text nodes (newlines) between .line elements to prevent visual empty lines // This is necessary because Shiki outputs newline characters between span.line elements // and white-space: pre causes them to be displayed as visual line breaks const childNodes = Array.from(codeElement.childNodes); childNodes.forEach(node => { if (node.nodeType === Node.TEXT_NODE) { node.remove(); } }); container.classList.add('has-diff'); }, // Code block highlighting process (processed code support) async highlightCodeBlock(codeElement) { if (this.processedElements.has(codeElement)) return; try { const code = codeElement.textContent || ""; let language = window.wpGfmLanguageDetector.detectLanguage(codeElement); // Normalize diff-related aliases if (language === 'patch') { language = 'diff'; } if (!code.trim()) return; // Get saved theme from parent container's data attribute const markdownRendered = codeElement.closest(".gfmr-markdown-rendered"); const savedTheme = markdownRendered?.getAttribute("data-shiki-theme") || ""; // Get current theme from settings (resolve 'auto' to actual theme) let currentTheme = window.wpGfmConfig?.theme?.shiki_theme ?? window.wpGfmSettings?.theme?.shiki_theme ?? (window.matchMedia?.('(prefers-color-scheme: dark)').matches ? 'github-dark' : 'github-light'); if (currentTheme === "auto") { const prefersDark = window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches; currentTheme = prefersDark ? "github-dark" : "github-light"; } // Handle already highlighted code if ( window.wpGfmLanguageDetector.isAlreadyHighlighted(codeElement) && language !== "plaintext" ) { // Get saved language from element attributes const savedLanguage = codeElement.getAttribute('data-gfmr-language') || codeElement.className.match(/language-(\w+)/)?.[1] || ''; // Check if theme AND language match - skip re-rendering only if both match if (savedTheme && savedTheme === currentTheme && savedLanguage === language) { console.log( `[WP GFM v2 Hotfix] Theme and language match (${savedTheme}, ${language}), skipping re-render`, ); this.processedElements.add(codeElement); codeElement.setAttribute("data-gfmr-processed", "true"); codeElement.setAttribute("data-gfmr-language", language); // Ensure visibility const container = codeElement.closest("pre") || codeElement.parentElement; if (container) { container.style.visibility = "visible"; container.style.opacity = "1"; } return; } console.log( `[WP GFM v2 Hotfix] Already highlighted, reprocessing (saved: ${savedTheme}, current: ${currentTheme}): ${language}`, ); // Mermaid requires separate processing if (language === "mermaid") { console.log( `[WP GFM v2 Hotfix] Adding Mermaid element to processing queue`, ); await this.renderMermaidDiagram(codeElement); return; } // Re-highlight for other languages (theme mismatch) console.log( `[WP GFM v2 Hotfix] Executing re-highlighting: ${language}`, ); const plainText = window.wpGfmLanguageDetector.extractPlainTextFromHighlighted( codeElement, ); if (global.wpGfmShikiHighlighter && plainText.trim()) { try { console.log( `[DEBUG] Text sent to Shiki (${language}):`, plainText.substring(0, 300) + "...", ); const highlighted = global.wpGfmShikiHighlighter.codeToHtml( plainText, { lang: language }, ); console.log(`[DEBUG] Re-highlighting successful: ${language}`); console.log( `[DEBUG] Generated HTML:`, highlighted.substring(0, 200) + "...", ); // DOM update (enhanced debug version) const tempDiv = document.createElement("div"); tempDiv.innerHTML = highlighted; const newPre = tempDiv.querySelector("pre"); if (newPre && codeElement.parentElement) { const container = codeElement.closest("pre") || codeElement.parentElement; console.log( `[DEBUG] Container before update:`, container.outerHTML.substring(0, 200) + "...", ); if (container.parentNode) { // Apply appropriate theme based on settings const currentTheme = window.wpGfmConfig?.theme?.shiki_theme ?? window.wpGfmSettings?.theme?.shiki_theme ?? (window.matchMedia?.('(prefers-color-scheme: dark)').matches ? 'github-dark' : 'github-light'); const existingClasses = container.className .replace(/github-light/g, "") .replace(/github-dark/g, "") .replace(/shiki/g, "") .trim(); newPre.className = `shiki ${currentTheme} ${existingClasses}`.trim(); // Force style application and DOM update container.innerHTML = newPre.innerHTML; container.className = newPre.className; // Apply diff highlighting if language is diff if (language === 'diff') { this.applyDiffHighlighting(container); } // Apply theme-appropriate styles // Light theme uses slightly darker background (#eaeef2) for visual separation const isLightTheme = currentTheme.includes("light"); const bgColor = isLightTheme ? "#eaeef2" : "#24292e"; const textColor = isLightTheme ? "#24292f" : "#e1e4e8"; container.style.backgroundColor = bgColor; container.style.color = textColor; container.style.cssText = newPre.style.cssText || ""; container.style.setProperty( "background-color", bgColor, "important", ); container.style.setProperty("color", textColor, "important"); container.style.setProperty("font-size", "14px", "important"); container.style.setProperty( "line-height", "1.45", "important", ); container.style.setProperty( "font-family", "SFMono-Regular, Consolas, Liberation Mono, Menlo, Monaco, Courier New, monospace", "important", ); container.style.setProperty( "border-radius", "6px", "important", ); container.style.setProperty("padding", "16px", "important"); // Force apply color and font styles (theme-aware adjustment) const codeElements = container.querySelectorAll("code, span"); codeElements.forEach((el) => { if (el.style.color) { // Apply theme colors as-is from Shiki el.style.setProperty( "color", el.style.color, "important", ); } // Make background transparent for proper theme display if (el.style.backgroundColor) { el.style.setProperty( "background-color", "transparent", "important", ); } }); console.log( `[DEBUG] Container after update:`, container.outerHTML.substring(0, 200) + "...", ); const processedElement = container.querySelector("code") || container; this.processedElements.add(processedElement); // Mark as processed and show immediately processedElement.setAttribute("data-gfmr-processed", "true"); processedElement.setAttribute("data-gfmr-language", language); // Instant visibility for ultra-fast rendering const visibleContainer = processedElement.closest("pre") || processedElement.parentElement; if (visibleContainer) { visibleContainer.style.visibility = "visible"; visibleContainer.style.opacity = "1"; } console.log( `[WP GFM v2 Hotfix] Re-highlighting completed: ${language}`, ); // Add copy button this.addCopyButton(container, plainText); // Immediate style application for theme override protection const allSpans = container.querySelectorAll( 'span[style*="color"]', ); allSpans.forEach((span) => { const originalColor = span.style.color; if (originalColor) { span.style.setProperty( "color", originalColor, "important", ); span.style.setProperty( "font-weight", "inherit", "important", ); } }); return; } } } catch (shikiError) { console.warn( `[DEBUG] Re-highlighting failed (${language}):`, shikiError, ); } } // Mark existing process to prevent duplication if failed this.processedElements.add(codeElement); codeElement.setAttribute("data-gfmr-processed", "true"); codeElement.setAttribute("data-gfmr-language", language); return; } console.log(`[WP GFM v2 Hotfix] Highlighting process: ${language}`); if (global.wpGfmShikiHighlighter) { // Shiki highlighting with language support check try { const highlighted = global.wpGfmShikiHighlighter.codeToHtml(code, { lang: language, }); console.log(`[DEBUG] Shiki highlighting successful: ${language}`); // DOM update const tempDiv = document.createElement("div"); tempDiv.innerHTML = highlighted; const newPre = tempDiv.querySelector("pre"); if (newPre && codeElement.parentElement) { const container = codeElement.closest("pre") || codeElement.parentElement; if (container.parentNode) { // Apply appropriate theme based on settings const currentTheme = window.wpGfmConfig?.theme?.shiki_theme ?? window.wpGfmSettings?.theme?.shiki_theme ?? (window.matchMedia?.('(prefers-color-scheme: dark)').matches ? 'github-dark' : 'github-light'); const existingClasses = container.className .replace(/github-light/g, "") .replace(/github-dark/g, "") .replace(/shiki/g, "") .trim(); newPre.className = `shiki ${currentTheme} ${existingClasses}`.trim(); // Apply theme-appropriate styles // Light theme uses slightly darker background (#eaeef2) for visual separation const isLightTheme = currentTheme.includes("light"); const bgColor = isLightTheme ? "#eaeef2" : "#24292e"; const textColor = isLightTheme ? "#24292f" : "#e1e4e8"; newPre.style.setProperty( "background-color", bgColor, "important", ); newPre.style.setProperty("color", textColor, "important"); newPre.style.setProperty("font-size", "14px", "important"); newPre.style.setProperty("line-height", "1.45", "important"); newPre.style.setProperty( "font-family", "SFMono-Regular, Consolas, Liberation Mono, Menlo, Monaco, Courier New, monospace", "important", ); newPre.style.setProperty("border-radius", "6px", "important"); newPre.style.setProperty("padding", "16px", "important"); container.parentNode.replaceChild(newPre, container); // Apply diff highlighting if language is diff if (language === 'diff') { this.applyDiffHighlighting(newPre); } const processedElement = newPre.querySelector("code") || newPre; this.processedElements.add(processedElement); // Mark as processed and show immediately processedElement.setAttribute("data-gfmr-processed", "true"); processedElement.setAttribute("data-gfmr-language", language); // Instant visibility for ultra-fast rendering const containerEl = processedElement.closest("pre") || processedElement.parentElement; if (containerEl) { containerEl.style.visibility = "visible"; containerEl.style.opacity = "1"; } console.log( `[WP GFM v2 Hotfix] Highlighting completed: ${language}`, ); // Add copy button this.addCopyButton(newPre, code); } } } catch (shikiError) { console.debug( `[GFMR] Shiki: Language not supported: ${language}`, ); // Process as plain text and show immediately this.processedElements.add(codeElement); codeElement.setAttribute("data-gfmr-processed", "true"); // Instant visibility even without processing const container = codeElement.closest("pre") || codeElement.parentElement; if (container) { container.style.visibility = "visible"; container.style.opacity = "1"; } } } else { // Process as plain text if Shiki is not available and show immediately this.processedElements.add(codeElement); codeElement.setAttribute("data-gfmr-processed", "true"); // Instant visibility even without Shiki const container = codeElement.closest("pre") || codeElement.parentElement; if (container) { container.style.visibility = "visible"; container.style.opacity = "1"; } } } catch (error) { console.error("[WP GFM v2 Hotfix] Highlighting error:", error); this.processedElements.add(codeElement); codeElement.setAttribute("data-gfmr-processed", "true"); // Instant visibility even on error const container = codeElement.closest("pre") || codeElement.parentElement; if (container) { container.style.visibility = "visible"; container.style.opacity = "1"; } } }, // Mermaid diagram processing (lazy loading support) async renderMermaidDiagram(element) { if (this.processedElements.has(element)) return; // Check if already processed by gfmr-diagrams-v2.js if ( element.closest(".gfmr-mermaid-wrapper") || element.parentElement?.classList?.contains("gfmr-mermaid-wrapper") ) { console.log( "[WP GFM v2 Hotfix] Already wrapped by gfmr-diagrams-v2.js, skipping", ); this.processedElements.add(element); return; } try { let content = element.textContent || element.innerText || ""; if (!content.trim()) return; // Remove markdown code block markers if present content = content.trim(); content = content.replace(/^\s*```\s*mermaid\s*$/m, ''); content = content.replace(/^\s*```\s*$/m, ''); content = content.trim(); console.log("[WP GFM v2 Hotfix] Starting Mermaid processing"); // Load Mermaid library if not yet loaded if (!global.mermaid) { console.log("[WP GFM v2 Hotfix] Lazy loading Mermaid library"); await this.loadMermaid(); } if (global.mermaid) { // Generate unique ID const id = "mermaid-" + Date.now() + "-" + Math.random().toString(36).substr(2, 9); // Create outer container (Flexbox for centering) const outerContainer = document.createElement("div"); outerContainer.id = id; outerContainer.className = "gfmr-mermaid-container gfmr-mermaid-container-unified mermaid-diagram"; // Outer container: Flexbox centering only outerContainer.style.cssText = ` display: flex !important; justify-content: center !important; align-items: center !important; width: 100% !important; margin: 16px 0 !important; padding: 0 !important; `; // Create inner container (for copy button positioning) const innerContainer = document.createElement("div"); innerContainer.className = "gfmr-mermaid-inner-container"; innerContainer.style.cssText = ` position: relative !important; display: block !important; width: 100% !important; `; // Get background color (from data-mermaid-bg-color attribute) const markdownContainer = element.closest(".gfmr-markdown-rendered"); let bgColor = null; if (markdownContainer) { bgColor = markdownContainer.getAttribute("data-mermaid-bg-color"); } // Mermaid rendering const { svg } = await global.mermaid.render(id + "-svg", content); innerContainer.innerHTML = svg; // Apply background color if (bgColor && bgColor !== "" && bgColor !== "transparent") { innerContainer.style.setProperty( "background", bgColor, "important", ); innerContainer.style.setProperty("padding", "15px", "important"); innerContainer.style.setProperty( "border-radius", "6px", "important", ); } // Optimize SVG for proper display const svgElement = innerContainer.querySelector("svg"); if (svgElement) { // Keep SVG at natural size (removing max-width prevents text clipping) svgElement.style.height = "auto"; } // Assemble the structure outerContainer.appendChild(innerContainer); // Prepare for replacement const targetElement = element.closest("pre") || element.parentElement; // Save Mermaid source code as hidden element const sourceElement = document.createElement("div"); sourceElement.className = "mermaid-source"; sourceElement.textContent = content; sourceElement.style.display = "none"; innerContainer.appendChild(sourceElement); // Replace original element if (targetElement && targetElement.parentNode) { targetElement.parentNode.replaceChild( outerContainer, targetElement, ); this.processedElements.add(outerContainer); outerContainer.setAttribute("data-gfmr-processed", "true"); // Add copy button (to inner container for proper positioning) this.addCopyButton(innerContainer, content, "mermaid"); // Add click-to-expand functionality this.addLightboxTrigger(outerContainer, innerContainer); console.log( "[WP GFM v2 Hotfix] Mermaid processing completed with dual-container centering", ); } } else { this.processedElements.add(element); element.setAttribute("data-gfmr-processed", "true"); // Instant visibility even without Mermaid const container = element.closest("pre") || element.parentElement; if (container) { container.style.visibility = "visible"; container.style.opacity = "1"; } } } catch (error) { console.error("[WP GFM v2 Hotfix] Mermaid error:", error); this.processedElements.add(element); element.setAttribute("data-gfmr-processed", "true"); // Instant visibility even on error const container = element.closest("pre") || element.parentElement; if (container) { container.style.visibility = "visible"; container.style.opacity = "1"; } } }, // Process all code blocks async processAllCodeBlocks() { const selectors = [ 'pre code:not([data-ssr="true"])', '.wp-block-code code:not([data-ssr="true"])', '[class*="language-"]:not([data-ssr="true"])', ]; const codeBlocks = document.querySelectorAll(selectors.join(", ")); console.log(`[WP GFM v2 Hotfix] Found ${codeBlocks.length} code blocks (SSR-rendered excluded)`); for (const block of codeBlocks) { // Skip already processed elements if (block.hasAttribute("data-gfmr-processed")) continue; // Skip SSR-rendered elements (double check) if (block.getAttribute("data-ssr") === "true") continue; // Explicitly process SSR fallback elements (data-ssr="false") // These are code blocks that failed server-side rendering const isSSRFallback = block.closest('pre[data-ssr="false"]'); if (isSSRFallback) { console.log('[WP GFM v2 Hotfix] Processing SSR fallback code block'); } // Skip code blocks within Markdown source elements to prevent duplication if (block.closest(".gfmr-markdown-source")) { console.log( "[WP GFM v2 Hotfix] Skipping code blocks within Markdown source", ); continue; } // Basic check within Markdown container (individual elements only) const markdownContainer = block.closest(".gfmr-markdown-container"); if (markdownContainer) { const renderedSection = block.closest(".gfmr-markdown-rendered"); if (!renderedSection) { console.log( "[WP GFM v2 Hotfix] Within Markdown container but outside rendering element, skipping processing", ); continue; } } // Mermaid is handled separately if (window.wpGfmLanguageDetector.isMermaidBlock(block)) continue; await this.highlightCodeBlock(block); } }, // Process all Mermaid blocks (improved version) async processAllMermaidDiagrams() { const mermaidSelectors = [ '[class*="language-mermaid"]:not([data-ssr="true"])', '.language-mermaid:not([data-ssr="true"])', 'code.language-mermaid:not([data-ssr="true"])', 'pre.language-mermaid code:not([data-ssr="true"])', 'pre[class*="language-mermaid"] code:not([data-ssr="true"])', ]; // CSS class-based selectors const mermaidBlocks = document.querySelectorAll( mermaidSelectors.join(", "), ); const detectedBlocks = new Set(Array.from(mermaidBlocks)); console.log( `[WP GFM v2 Hotfix] Found ${mermaidBlocks.length} Mermaid blocks via CSS selectors (SSR-rendered excluded)`, ); // Content-based detection for State Diagram, ER Diagram, GitGraph, User Journey, Class Diagram // More specific selectors for better performance on large pages const allCodeLikeElements = document.querySelectorAll( 'pre, .wp-block-code code, .wp-block-code div[class*="language-"]', ); let contentBasedCount = 0; for (const element of allCodeLikeElements) { // Skip if already detected via CSS selectors if (detectedBlocks.has(element)) continue; // Skip if already processed if (element.hasAttribute("data-gfmr-processed")) continue; // Check with isMermaidBlock method if (window.wpGfmLanguageDetector.isMermaidBlock(element)) { detectedBlocks.add(element); contentBasedCount++; } } console.log( `[WP GFM v2 Hotfix] Found ${contentBasedCount} additional Mermaid blocks via content detection`, ); console.log( `[WP GFM v2 Hotfix] Total Mermaid blocks to process: ${detectedBlocks.size}`, ); // Debug: Check all language class elements const allLanguageElements = document.querySelectorAll( '[class*="language-"]', ); console.log( "[DEBUG] All language class elements:", Array.from(allLanguageElements).map((el) => ({ tag: el.tagName, class: el.className, text: el.textContent.substring(0, 50), })), ); for (const block of detectedBlocks) { // Skip already processed elements if (block.hasAttribute("data-gfmr-processed")) continue; // Skip SSR-rendered elements (double check) if (block.getAttribute("data-ssr") === "true") continue; // Skip Mermaid blocks within Markdown source elements to prevent duplication if (block.closest(".gfmr-markdown-source")) { console.log( "[WP GFM v2 Hotfix] Skipping Mermaid blocks within Markdown source", ); continue; } // Check if already processed within Markdown rendered container const markdownContainer = block.closest(".gfmr-markdown-container"); if (markdownContainer) { const renderedSection = block.closest(".gfmr-markdown-rendered"); if (!renderedSection) { console.log( "[WP GFM v2 Hotfix] Within Markdown container but outside rendering element, skipping Mermaid", ); continue; } } await this.renderMermaidDiagram(block); } }, // Mermaid block detection - delegate to external module isMermaidBlock(element) { if (window.wpGfmLanguageDetector) { return window.wpGfmLanguageDetector.isMermaidBlock(element); } // Fallback if module not loaded const className = element.className || ""; return ( className.includes("language-mermaid") || className.includes("mermaid") ); }, // Ultra-fast immediate processing (no idle callback delays) // Lazy loading threshold: blocks beyond this count use IntersectionObserver LAZY_LOAD_THRESHOLD: 5, // Number of blocks to process immediately even with lazy loading IMMEDIATE_PROCESS_COUNT: 3, // IntersectionObserver instance for lazy loading lazyLoadObserver: null, async processAllElementsImmediately() { const codeBlocks = document.querySelectorAll( 'pre code:not([data-ssr="true"]), .wp-block-code code:not([data-ssr="true"]), [class*="language-"]:not([data-ssr="true"])', ); // CSS-based Mermaid detection const mermaidBlocksCSS = document.querySelectorAll( '[class*="language-mermaid"]:not([data-ssr="true"]), .language-mermaid:not([data-ssr="true"]), code.language-mermaid:not([data-ssr="true"]), pre.language-mermaid code:not([data-ssr="true"]), pre[class*="language-mermaid"] code:not([data-ssr="true"])', ); const detectedMermaidBlocks = new Set(Array.from(mermaidBlocksCSS)); // Content-based Mermaid detection for additional diagram types (optimized selectors) const allCodeLikeElements = document.querySelectorAll( 'pre:not([data-ssr="true"]), .wp-block-code code:not([data-ssr="true"]), .wp-block-code div[class*="language-"]:not([data-ssr="true"])', ); for (const element of allCodeLikeElements) { if (detectedMermaidBlocks.has(element)) continue; if (element.hasAttribute("data-gfmr-processed")) continue; if (element.getAttribute("data-ssr") === "true") continue; if (window.wpGfmLanguageDetector.isMermaidBlock(element)) { detectedMermaidBlocks.add(element); } } // Filter out already processed, SSR-rendered, and Mermaid blocks from code blocks const unprocessedCodeBlocks = Array.from(codeBlocks).filter((block) => { if (block.hasAttribute("data-gfmr-processed")) return false; if (block.getAttribute("data-ssr") === "true") return false; if (block.closest(".gfmr-markdown-source")) return false; if (window.wpGfmLanguageDetector?.isMermaidBlock(block)) return false; return true; }); const unprocessedMermaidBlocks = Array.from(detectedMermaidBlocks).filter( (block) => { if (block.hasAttribute("data-gfmr-processed")) return false; if (block.getAttribute("data-ssr") === "true") return false; if (block.closest(".gfmr-markdown-source")) return false; return true; }, ); const totalBlocks = unprocessedCodeBlocks.length + unprocessedMermaidBlocks.length; console.log( `[WP GFM v2 Hotfix] Total blocks to process: ${totalBlocks} (code: ${unprocessedCodeBlocks.length}, mermaid: ${unprocessedMermaidBlocks.length})`, ); // Use lazy loading if there are many blocks if (totalBlocks > this.LAZY_LOAD_THRESHOLD) { console.log( `[WP GFM v2 Hotfix] Using lazy loading (threshold: ${this.LAZY_LOAD_THRESHOLD})`, ); await this.processWithLazyLoading( unprocessedCodeBlocks, unprocessedMermaidBlocks, ); } else { // Process all elements immediately with larger batches const processAllElements = async (elements, processor) => { const promises = elements.map((element) => { return processor.call(this, element); }); return Promise.all(promises); }; // Process code blocks and Mermaid blocks concurrently - no delays await Promise.all([ processAllElements(unprocessedCodeBlocks, this.highlightCodeBlock), processAllElements( unprocessedMermaidBlocks, this.renderMermaidDiagram, ), ]); } console.log( "[WP GFM v2 Hotfix] Ultra-fast immediate processing completed", ); }, /** * Process blocks with lazy loading using IntersectionObserver. * First N blocks are processed immediately, rest are deferred until visible. */ async processWithLazyLoading(codeBlocks, mermaidBlocks) { // Combine all blocks for priority processing const allBlocks = [ ...codeBlocks.map((b) => ({ element: b, type: "code" })), ...mermaidBlocks.map((b) => ({ element: b, type: "mermaid" })), ]; // Process first N blocks immediately const immediateBlocks = allBlocks.slice(0, this.IMMEDIATE_PROCESS_COUNT); const deferredBlocks = allBlocks.slice(this.IMMEDIATE_PROCESS_COUNT); console.log( `[WP GFM v2 Hotfix] Processing ${immediateBlocks.length} blocks immediately, ${deferredBlocks.length} deferred`, ); // Process immediate blocks const immediatePromises = immediateBlocks.map(({ element, type }) => { if (type === "mermaid") { return this.renderMermaidDiagram(element); } return this.highlightCodeBlock(element); }); await Promise.all(immediatePromises); // Setup IntersectionObserver for deferred blocks if (deferredBlocks.length > 0) { this.setupLazyLoadObserver(deferredBlocks); } }, /** * Setup IntersectionObserver for lazy loading code blocks. */ setupLazyLoadObserver(deferredBlocks) { // Clean up existing observer if any if (this.lazyLoadObserver) { this.lazyLoadObserver.disconnect(); } // Create observer with generous root margin for pre-loading this.lazyLoadObserver = new IntersectionObserver( (entries) => { entries.forEach((entry) => { if (entry.isIntersecting) { const element = entry.target; const blockType = element.getAttribute("data-gfmr-lazy-type"); // Stop observing this element this.lazyLoadObserver.unobserve(element); // Remove lazy load marker element.removeAttribute("data-gfmr-lazy-type"); element.removeAttribute("data-gfmr-lazy"); // Process the block if (blockType === "mermaid") { this.renderMermaidDiagram(element); } else { this.highlightCodeBlock(element); } console.log( `[WP GFM v2 Hotfix] Lazy loaded ${blockType} block on viewport entry`, ); } }); }, { rootMargin: "200px 0px", // Start loading 200px before entering viewport threshold: 0, }, ); // Observe all deferred blocks deferredBlocks.forEach(({ element, type }) => { // Mark as lazy loaded for identification element.setAttribute("data-gfmr-lazy", "true"); element.setAttribute("data-gfmr-lazy-type", type); // Add placeholder styling for unprocessed blocks const container = element.closest("pre") || element.parentElement; if (container && !container.hasAttribute("data-gfmr-lazy-styled")) { container.setAttribute("data-gfmr-lazy-styled", "true"); container.style.minHeight = "3em"; // Prevent layout shift } this.lazyLoadObserver.observe(element); }); console.log( `[WP GFM v2 Hotfix] IntersectionObserver setup for ${deferredBlocks.length} blocks`, ); }, // Monitor new elements (infinite loop prevention) startMutationObserver() { const observer = new MutationObserver((mutations) => { // Ignore during processing to prevent infinite loop if (this.isProcessing) return; let hasNewContent = false; mutations.forEach((mutation) => { if (mutation.type === "childList") { mutation.addedNodes.forEach((node) => { if (node.nodeType === Node.ELEMENT_NODE) { // Exclude elements created by ourselves const isOurElement = node.classList?.contains("gfmr-mermaid-container") || node.hasAttribute?.("data-gfmr-processed") || node.closest?.(".gfmr-mermaid-container"); if (!isOurElement) { const hasCode = node.querySelector('code, pre, [class*="language-"]') || node.matches('code, pre, [class*="language-"]'); if (hasCode) { hasNewContent = true; } } } }); } }); if (hasNewContent) { // Prevent continuous execution with debounce processing (extended to 500ms) clearTimeout(this.processTimeout); this.processTimeout = setTimeout(() => this.processNewContent(), 500); } }); observer.observe(document.body, { childList: true, subtree: true, }); }, // Process new content (infinite loop prevention) async processNewContent() { if (this.isProcessing) return; this.isProcessing = true; try { await this.processAllCodeBlocks(); await this.processAllMermaidDiagrams(); // Process math formulas in new content if (this.hasMathContent()) { if (!this.katexLoaded) { await this.loadKaTeX(); } if (this.katexLoaded) { await this.renderMathFormulas(); } } // Process chart content in new content if (this.hasChartContent()) { try { await this.loadGfmrCharts(); if (global.wpGfmCharts) { await global.wpGfmCharts.processAllCharts(); } } catch (error) { console.error( "[WP GFM v2 Hotfix] Chart processing in new content failed:", error, ); } } } finally { this.isProcessing = false; } }, // Main initialization (optimized version) async initialize() { console.log("[WP GFM v2 Hotfix] Starting optimized initialization"); try { // Simplified element detection - check for any code elements (excluding SSR-rendered) const codeElements = document.querySelectorAll( 'pre code:not([data-ssr="true"]), code[class*="language-"]:not([data-ssr="true"]), [class*="language-"]:not([data-ssr="true"])', ); // Check for math content const hasMath = this.hasMathContent(); if (codeElements.length === 0 && !hasMath) { console.log( "[WP GFM v2 Hotfix] No code elements or math content found (SSR-rendered excluded) - skipping initialization", ); return; } console.log( `[WP GFM v2 Hotfix] Found ${codeElements.length} code elements (SSR-rendered excluded), math content: ${hasMath} - Starting library loading`, ); // Build list of libraries to load const librariesToLoad = []; if (codeElements.length > 0) { librariesToLoad.push(this.loadShiki()); librariesToLoad.push(this.loadMermaid()); } // Conditionally load KaTeX only if math content is detected if (hasMath) { console.log( "[WP GFM v2 Hotfix] Math content detected, adding KaTeX to load queue", ); librariesToLoad.push(this.loadKaTeX()); } // Check for chart content const hasCharts = this.hasChartContent(); // Load libraries in parallel for maximum performance try { await Promise.all(librariesToLoad); console.log("[WP GFM v2 Hotfix] Library loading completed"); } catch (error) { console.error( "[WP GFM v2 Hotfix] Some libraries failed to load, continuing with available functionality:", error, ); } // Process code elements if (codeElements.length > 0) { // Ultra-fast immediate processing (no idle callback delays) await this.processAllElementsImmediately(); } // Render math formulas if KaTeX was loaded if (hasMath && this.katexLoaded) { await this.renderMathFormulas(); } // Initialize and process charts if chart content exists if (hasCharts) { try { await this.loadGfmrCharts(); if (global.wpGfmCharts) { await global.wpGfmCharts.processAllCharts(); } } catch (error) { console.error( "[WP GFM v2 Hotfix] Chart initialization failed:", error, ); } } // Start monitoring new content this.startMutationObserver(); // Setup OS theme change detection for 'auto' mode this.setupThemeChangeListener(); console.log("[WP GFM v2 Hotfix] Initialization completed"); this.initialized = true; // Fire completion event document.dispatchEvent(new CustomEvent("wpGfmV2HotfixReady")); } catch (error) { console.error("[WP GFM v2 Hotfix] Initialization error:", error); } }, /** * Setup listener for OS theme changes (for 'auto' mode). * When the OS theme changes, re-render code blocks with the new theme. */ setupThemeChangeListener() { const configTheme = window.wpGfmConfig?.theme?.shiki_theme; // Only listen for changes if theme is set to 'auto' if (configTheme !== "auto") { return; } console.log( "[WP GFM v2 Hotfix] Setting up OS theme change listener for auto mode", ); const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)"); // Use addEventListener for modern browsers const handleThemeChange = async (e) => { const newTheme = e.matches ? "github-dark" : "github-light"; console.log( `[WP GFM v2 Hotfix] OS theme changed to ${e.matches ? "dark" : "light"}, re-rendering with theme: ${newTheme}`, ); // Clear processed elements to allow re-rendering this.processedElements = new WeakSet(); // Re-process all code blocks with the new theme await this.processAllElementsImmediately(); }; // Add event listener (works in modern browsers) if (mediaQuery.addEventListener) { mediaQuery.addEventListener("change", handleThemeChange); } else if (mediaQuery.addListener) { // Fallback for older browsers mediaQuery.addListener(handleThemeChange); } }, }; // Ultra-fast initialization - execute as soon as body exists if (document.body) { // Body exists - initialize immediately for fastest rendering console.log( "[WP GFM v2 Hotfix] Body ready, starting ultra-fast initialization", ); hotfix.initialize(); } else if (document.readyState === "loading") { // Body doesn't exist yet - wait for DOMContentLoaded document.addEventListener("DOMContentLoaded", () => { console.log("[WP GFM v2 Hotfix] DOM loaded, starting initialization"); hotfix.initialize(); }); } else { // DOM already loaded - execute immediately console.log( "[WP GFM v2 Hotfix] DOM ready, starting immediate initialization", ); hotfix.initialize(); } // Export globally global.wpGfmV2Hotfix = hotfix; })(typeof window !== "undefined" ? window : global); |