quikdown
Version:
Small, safe, bidirectional Markdown parser and editor with streaming, undo/redo, rich fences, MCP tools, and a standalone airgapped build. Zero runtime deps. Browser and Node.js.
13 lines • 106 kB
JavaScript
/**
* Quikdown Editor - Drop-in Markdown Parser
* @version 1.2.22
* @license BSD-2-Clause
* @copyright DeftIO 2025
*/
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/**
* Quikdown Editor - A drop-in markdown editor control
* @license BSD-2-Clause
*/const F={b:1,i:1,em:1,strong:1,del:1,s:1,u:1,mark:1,sup:1,sub:1,kbd:1,abbr:1,var:1,samp:1,cite:1,small:1,ins:1,dfn:1,ruby:1,rt:1,rp:1,time:1,wbr:1,img:1,picture:1,source:1,video:1,audio:1,figure:1,figcaption:1,a:1,br:1,hr:1,div:1,span:1,p:1,details:1,summary:1,section:1,article:1,aside:1,header:1,footer:1,nav:1,main:1,table:1,thead:1,tbody:1,tfoot:1,tr:1,th:1,td:1,caption:1,col:1,colgroup:1,ul:1,ol:1,li:1,dl:1,dt:1,dd:1,h1:1,h2:1,h3:1,h4:1,h5:1,h6:1,blockquote:1,pre:1,code:1},z={mode:"split",showToolbar:!0,showRemoveHR:!1,showLazyLinefeeds:!1,theme:"auto",lazy_linefeeds:!1,inline_styles:!1,debounceDelay:20,placeholder:"Start typing markdown...",plugins:{highlightjs:!1,mermaid:!1},preloadFences:null,customFences:{},enableComplexFences:!0,showUndoRedo:!1,undoStackSize:100,allowUnsafeHTML:!1,showAllowUnsafeHTML:!1,allowExternalFetch:!0,reference_links:!1,footnotes:!1},B={highlightjs:{check:()=>void 0!==window.hljs,script:"https://unpkg.com/@highlightjs/cdn-assets/highlight.min.js",css:"https://unpkg.com/@highlightjs/cdn-assets/styles/github.min.css",cssDark:"https://unpkg.com/@highlightjs/cdn-assets/styles/github-dark.min.css"},mermaid:{check:()=>void 0!==window.mermaid,script:"https://unpkg.com/mermaid/dist/mermaid.min.js",afterLoad:()=>{window.mermaid&&window.mermaid.initialize({startOnLoad:!1})}},math:{check:()=>void 0!==window.MathJax,script:"https://cdn.jsdelivr.net/npm/mathjax@3.2.2/es5/tex-svg.js",beforeLoad:()=>{window.MathJax||(window.MathJax={loader:{load:["input/tex","output/svg"]},tex:{packages:{"[+]":["ams"]},inlineMath:[["$","$"],["\\(","\\)"]],displayMath:[["$$","$$"],["\\[","\\]"]],processEscapes:!0,processEnvironments:!0},options:{renderActions:{addMenu:[]},ignoreHtmlClass:"tex2jax_ignore",processHtmlClass:"tex2jax_process"},svg:{fontCache:"none"},startup:{typeset:!1}})}},geojson:{check:()=>void 0!==window.L,script:"https://unpkg.com/leaflet@1.9.4/dist/leaflet.js",css:"https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"},stl:{check:()=>void 0!==window.THREE,script:"https://unpkg.com/three@0.147.0/build/three.min.js"},abc:{check:()=>void 0!==window.ABCJS,script:"https://cdn.jsdelivr.net/npm/abcjs@6/dist/abcjs-basic-min.js"},music:{check:()=>void 0!==window.ABCJS,script:"https://cdn.jsdelivr.net/npm/abcjs@6/dist/abcjs-basic-min.js"},vega:{check:()=>void 0!==window.vegaEmbed,scripts:["https://cdn.jsdelivr.net/npm/vega@5","https://cdn.jsdelivr.net/npm/vega-lite@5","https://cdn.jsdelivr.net/npm/vega-embed@6"]}};class R{constructor(e,t={}){if(this.container="string"==typeof e?document.querySelector(e):e,!this.container)throw new Error("QuikdownEditor: Invalid container");this.options={...z,...t},this._markdown="",this._html="",this.currentMode=this.options.mode,this.updateTimer=null,this._undoStack=[],this._redoStack=[],this._isUndoRedo=!1,this._fenceLibraries={...B},this.initPromise=this.init()}async init(){await this.loadPlugins(),this.buildUI(),this.attachEvents(),this.applyTheme(),this.setMode(this.currentMode),this.options.initialContent&&this.setMarkdown(this.options.initialContent)}buildUI(){this.container.innerHTML="",this.container.classList.add("qde-container"),this.options.showToolbar&&(this.toolbar=this.createToolbar(),this.container.appendChild(this.toolbar)),this.editorArea=document.createElement("div"),this.editorArea.className="qde-editor",this.sourcePanel=document.createElement("div"),this.sourcePanel.className="qde-source",this.sourceTextarea=document.createElement("textarea"),this.sourceTextarea.className="qde-textarea",this.sourceTextarea.spellcheck=!1,this.sourceTextarea.placeholder=this.options.placeholder,this.sourcePanel.appendChild(this.sourceTextarea),this.previewPanel=document.createElement("div"),this.previewPanel.className="qde-preview",this.previewPanel.contentEditable=!0,this.previewPanel.spellcheck=!1,this.editorArea.appendChild(this.sourcePanel),this.editorArea.appendChild(this.previewPanel),this.container.appendChild(this.editorArea),this.injectStyles()}createToolbar(){const e=document.createElement("div");e.className="qde-toolbar";const t={source:"Source",split:"Split",preview:"Rendered"};["source","split","preview"].forEach(n=>{const o=document.createElement("button");o.className="qde-btn",o.dataset.mode=n,o.textContent=t[n],o.title=`Switch to ${t[n]} view`,e.appendChild(o)});const n=document.createElement("button");if(n.className="qde-btn qde-split-toggle",n.textContent="Preview",n.title="Toggle between source and preview in split mode",e.appendChild(n),this.options.showUndoRedo){const t=document.createElement("button");t.className="qde-btn disabled",t.dataset.action="undo",t.textContent="Undo",t.title="Undo (Ctrl+Z)",e.appendChild(t);const n=document.createElement("button");n.className="qde-btn disabled",n.dataset.action="redo",n.textContent="Redo",n.title="Redo (Ctrl+Shift+Z / Ctrl+Y)",e.appendChild(n)}const o=document.createElement("span");o.className="qde-spacer",e.appendChild(o);if([{action:"copy-markdown",text:"Copy MD",title:"Copy markdown to clipboard"},{action:"copy-html",text:"Copy HTML",title:"Copy HTML to clipboard"},{action:"copy-rendered",text:"Copy Rendered",title:"Copy rich text to clipboard"}].forEach(({action:t,text:n,title:o})=>{const r=document.createElement("button");r.className="qde-btn",r.dataset.action=t,r.textContent=n,r.title=o,e.appendChild(r)}),this.options.showRemoveHR){const t=document.createElement("button");t.className="qde-btn",t.dataset.action="remove-hr",t.textContent="Remove HR",t.title="Remove all horizontal rules (---) from markdown",e.appendChild(t)}if(this.options.showLazyLinefeeds){const t=document.createElement("button");t.className="qde-btn",t.dataset.action="lazy-linefeeds",t.textContent="Fix Linefeeds",t.title="Convert single newlines to paragraph breaks (one-time transform)",e.appendChild(t)}if(this.options.showAllowUnsafeHTML){const t=document.createElement("button");t.className="qde-btn",t.dataset.action="toggle-html-mode",t.textContent=this._getHtmlModeLabel(this.options.allowUnsafeHTML),t.title=this._getHtmlModeTooltip(this.options.allowUnsafeHTML),e.appendChild(t)}return e}injectStyles(){if(document.getElementById("qde-styles"))return;const e=document.createElement("style");e.id="qde-styles",e.textContent='\n .qde-container {\n display: flex;\n flex-direction: column;\n height: 100%;\n border: 1px solid #ddd;\n border-radius: 4px;\n overflow: hidden;\n background: white;\n color: #1f2937;\n }\n \n .qde-toolbar {\n display: flex;\n align-items: center;\n flex-wrap: wrap;\n padding: 8px;\n background: #f5f5f5;\n border-bottom: 1px solid #ddd;\n gap: 4px;\n }\n \n .qde-btn {\n padding: 6px 12px;\n border: 1px solid #ccc;\n background: white;\n border-radius: 3px;\n cursor: pointer;\n font-size: 14px;\n transition: all 0.2s;\n }\n \n .qde-btn:hover {\n background: #e9e9e9;\n border-color: #999;\n }\n \n .qde-btn.active {\n background: #007bff;\n color: white;\n border-color: #0056b3;\n }\n\n .qde-btn.disabled {\n opacity: 0.4;\n pointer-events: none;\n }\n .qde-btn[data-action="toggle-html-mode"] {\n position: relative;\n }\n .qde-btn[data-action="toggle-html-mode"]:hover::after {\n content: attr(title);\n position: absolute;\n bottom: calc(100% + 6px);\n left: 50%;\n transform: translateX(-50%);\n padding: 5px 10px;\n background: #1f2937;\n color: #fff;\n font-size: 0.75rem;\n font-weight: 400;\n white-space: nowrap;\n border-radius: 4px;\n pointer-events: none;\n z-index: 10;\n }\n \n .qde-spacer {\n flex: 1;\n }\n \n .qde-editor {\n display: flex;\n flex: 1;\n overflow: hidden;\n }\n \n .qde-source, .qde-preview {\n flex: 1 1 0;\n min-width: 0; /* allow flex shrinking below content size */\n min-height: 0;\n overflow: auto;\n padding: 16px;\n box-sizing: border-box;\n }\n\n .qde-source {\n border-right: 1px solid #ddd;\n /* Source pane is just a container for the textarea — make it\n a positioning context so the textarea can fill it absolutely */\n position: relative;\n padding: 0; /* textarea brings its own padding */\n }\n\n .qde-textarea {\n display: block;\n position: absolute;\n inset: 0;\n width: 100%;\n height: 100%;\n border: none;\n outline: none;\n resize: none;\n padding: 16px;\n box-sizing: border-box;\n font-family: \'Monaco\', \'Courier New\', monospace;\n font-size: 14px;\n line-height: 1.5;\n background: transparent;\n color: inherit;\n /* Wrap long lines so the textarea only scrolls VERTICALLY.\n pre-wrap preserves intentional line breaks/whitespace\n while soft-wrapping at the right edge. */\n white-space: pre-wrap;\n word-wrap: break-word;\n overflow-x: hidden;\n overflow-y: auto;\n }\n \n .qde-preview {\n font-family: -apple-system, BlinkMacSystemFont, \'Segoe UI\', Roboto, sans-serif;\n font-size: 16px;\n line-height: 1.6;\n outline: none;\n cursor: text; /* Standard text cursor */\n overflow-x: hidden; /* never scroll horizontally; clip wide content */\n }\n\n /* Code blocks and inline code — self-contained so the editor\n does not depend on any external stylesheet for these. */\n .qde-preview pre {\n background: #f4f4f4;\n color: #1f2937;\n padding: 10px;\n border-radius: 4px;\n overflow-x: auto;\n margin: 0.6em 0;\n font-size: 0.9em;\n line-height: 1.5;\n font-family: ui-monospace, "SF Mono", Monaco, "Cascadia Code",\n "Roboto Mono", Consolas, "Courier New", monospace;\n }\n .qde-preview code {\n padding: 2px 4px;\n font-size: 0.9em;\n border-radius: 3px;\n background: #f0f0f0;\n color: #1f2937;\n font-family: ui-monospace, "SF Mono", Monaco, "Cascadia Code",\n "Roboto Mono", Consolas, "Courier New", monospace;\n }\n .qde-preview pre code {\n padding: 0;\n font-size: inherit;\n border-radius: 0;\n background: transparent;\n color: inherit;\n }\n\n /* Wide fence content (Leaflet maps, large SVGs, STL canvases,\n iframes, raw <img>) must never overflow the preview pane */\n .qde-preview .geojson-container,\n .qde-preview .qde-stl-container,\n .qde-preview .qde-svg-container,\n .qde-preview .leaflet-container,\n .qde-preview iframe,\n .qde-preview img,\n .qde-preview > svg {\n max-width: 100%;\n }\n .qde-preview img {\n display: inline;\n }\n .qde-preview .leaflet-container { box-sizing: border-box; }\n .qde-preview .leaflet-container.qde-offline-map {\n background: #b8d4f0;\n }\n .qde-preview .leaflet-container.qde-offline-map path {\n shape-rendering: geometricPrecision;\n }\n .qde-dark .qde-preview .leaflet-container.qde-offline-map {\n background: #1a3048;\n }\n\n /* Standard markdown tables (the .quikdown-table class) need to\n scroll horizontally inside their own wrapper rather than\n making the whole preview pane scroll */\n .qde-preview table.quikdown-table,\n .qde-preview table.qde-csv-table {\n display: block;\n max-width: 100%;\n overflow-x: auto;\n }\n\n /* Fence-specific styles */\n .qde-svg-container {\n max-width: 100%;\n overflow: auto;\n }\n\n .qde-svg-container svg {\n max-width: 100%;\n height: auto;\n }\n \n .qde-html-container {\n /* HTML containers inherit background */\n margin: 12px 0;\n }\n \n .qde-math-container {\n text-align: center;\n margin: 16px 0;\n overflow-x: auto;\n }\n \n /* All tables in preview (both regular markdown and CSV) */\n .qde-preview table {\n width: 100%;\n border-collapse: collapse;\n margin: 12px 0;\n font-size: 14px;\n }\n \n .qde-preview table th,\n .qde-preview table td {\n border: 1px solid #ddd;\n padding: 8px;\n }\n \n /* Support for alignment classes from quikdown */\n .qde-preview .quikdown-left { text-align: left; }\n .qde-preview .quikdown-center { text-align: center; }\n .qde-preview .quikdown-right { text-align: right; }\n \n .qde-preview table th {\n background: #f5f5f5;\n font-weight: bold;\n }\n \n .qde-preview table tr:nth-child(even) {\n background: #f9f9f9;\n }\n \n /* Specific to CSV-generated tables */\n .qde-data-table {\n /* Can add specific CSV table styles here if needed */\n }\n \n .qde-json {\n /* Let highlight.js handle styling */\n overflow-x: auto;\n }\n \n .qde-error {\n background: #fee;\n border: 1px solid #fcc;\n color: #c00;\n padding: 8px;\n border-radius: 4px;\n font-family: monospace;\n font-size: 12px;\n }\n \n /* Read-only complex fence blocks in preview */\n .qde-preview [contenteditable="false"] {\n cursor: auto; /* Use automatic cursor (arrow for non-text) */\n user-select: text;\n position: relative;\n }\n \n /* Reset headings inside the preview to plain browser defaults so\n parent-page styles (site navs, marketing pages, design systems)\n cannot bleed in. Business-casual: black text, decreasing sizes,\n no decorative borders. See docs/quikdown-editor.md for how\n embedders can override these with their own stylesheet. */\n .qde-preview h1 { font-size: 2em; }\n .qde-preview h2 { font-size: 1.5em; }\n .qde-preview h3 { font-size: 1.25em; }\n .qde-preview h4 { font-size: 1em; }\n .qde-preview h5 { font-size: 0.875em; }\n .qde-preview h6 { font-size: 0.85em; }\n .qde-preview h1,\n .qde-preview h2,\n .qde-preview h3,\n .qde-preview h4,\n .qde-preview h5,\n .qde-preview h6 {\n font-weight: bold;\n color: inherit;\n border: none;\n margin: 0.6em 0 0.3em 0;\n line-height: 1.25;\n }\n .qde-preview p {\n margin: 0.35em 0;\n }\n .qde-preview ul,\n .qde-preview ol {\n padding-left: 1.8em;\n margin: 0.4em 0;\n }\n .qde-preview li {\n margin: 0.15em 0;\n }\n .qde-preview blockquote {\n margin: 0.5em 0;\n padding-left: 1em;\n }\n\n /* Ensure proper cursor for editable text elements */\n .qde-preview p,\n .qde-preview h1,\n .qde-preview h2,\n .qde-preview h3,\n .qde-preview h4,\n .qde-preview h5,\n .qde-preview h6,\n .qde-preview li,\n .qde-preview td,\n .qde-preview th,\n .qde-preview blockquote,\n .qde-preview pre[contenteditable="true"],\n .qde-preview code[contenteditable="true"] {\n cursor: text;\n }\n \n \n /* Non-editable complex renderers */\n .qde-preview .qde-svg-container[contenteditable="false"],\n .qde-preview .qde-html-container[contenteditable="false"],\n .qde-preview .qde-math-container[contenteditable="false"],\n .qde-preview .mermaid[contenteditable="false"] {\n opacity: 0.98;\n }\n \n /* Subtle hover effect for read-only blocks */\n .qde-preview [contenteditable="false"]:hover::after {\n content: "Read-only";\n position: absolute;\n top: 2px;\n right: 2px;\n font-size: 10px;\n color: #999;\n background: rgba(255, 255, 255, 0.9);\n padding: 2px 4px;\n border-radius: 2px;\n pointer-events: none;\n }\n \n /* Fix list padding in preview */\n .qde-preview ul,\n .qde-preview ol {\n padding-left: 2em;\n margin: 0.5em 0;\n }\n \n .qde-preview li {\n margin: 0.25em 0;\n }\n \n /* Mode-specific visibility */\n .qde-mode-source .qde-preview { display: none; }\n .qde-mode-source .qde-source { border-right: none; }\n .qde-mode-preview .qde-source { display: none; }\n .qde-mode-split .qde-source,\n .qde-mode-split .qde-preview { display: block; }\n \n /* Dark theme */\n .qde-dark {\n background: #1e1e1e;\n color: #e0e0e0;\n border-color: #444;\n }\n \n .qde-dark .qde-toolbar {\n background: #2d2d2d;\n border-color: #444;\n }\n \n .qde-dark .qde-btn {\n background: #3a3a3a;\n color: #e0e0e0;\n border-color: #555;\n }\n \n .qde-dark .qde-btn:hover {\n background: #4a4a4a;\n }\n \n .qde-dark .qde-source {\n border-color: #444;\n }\n \n .qde-dark .qde-textarea {\n background: #1e1e1e;\n color: #e0e0e0;\n }\n \n .qde-dark .qde-preview {\n background: #1e1e1e;\n color: #e0e0e0;\n }\n \n /* Dark mode code blocks */\n .qde-dark .qde-preview pre {\n background: #2d2d3a;\n color: #e6e6f0;\n }\n .qde-dark .qde-preview code {\n background: #2a2a3a;\n color: #e6e6f0;\n }\n .qde-dark .qde-preview pre code {\n background: transparent;\n color: inherit;\n }\n\n /* Dark mode table styles */\n .qde-dark .qde-preview table th,\n .qde-dark .qde-preview table td {\n border-color: #3a3a3a;\n }\n \n .qde-dark .qde-preview table th {\n background: #2d2d2d;\n }\n \n .qde-dark .qde-preview table tr:nth-child(even) {\n background: #252525;\n }\n \n /* Mobile split toggle — hidden by default */\n .qde-split-toggle { display: none; }\n\n /* Mobile responsive — compact toolbar for all small screens */\n @media (max-width: 720px) {\n .qde-toolbar {\n padding: 6px;\n gap: 3px;\n }\n .qde-btn {\n padding: 5px 8px;\n font-size: 12px;\n }\n .qde-source, .qde-preview {\n padding: 10px;\n }\n .qde-textarea {\n padding: 10px;\n }\n /* Undo/Redo: show circular arrows instead of text */\n .qde-btn[data-action="undo"] { font-size: 0; }\n .qde-btn[data-action="undo"]::after { content: "\\21B6"; font-size: 14px; }\n .qde-btn[data-action="redo"] { font-size: 0; }\n .qde-btn[data-action="redo"]::after { content: "\\21B7"; font-size: 14px; }\n /* Hide secondary utility buttons to reduce clutter */\n .qde-btn[data-action="remove-hr"],\n .qde-btn[data-action="lazy-linefeeds"],\n .qde-btn[data-action="copy-rendered"] { display: none; }\n }\n\n /* Portrait mobile: drop split mode entirely */\n @media (max-width: 720px) and (orientation: portrait) {\n .qde-btn[data-mode="split"] { display: none; }\n .qde-split-toggle { display: none !important; }\n /* Fallback: if still in split mode, show source only */\n .qde-mode-split .qde-source { border-right: none; }\n .qde-mode-split .qde-preview { display: none; }\n .qde-mode-split.qde-split-preview .qde-source { display: none; }\n .qde-mode-split.qde-split-preview .qde-preview { display: block; }\n }\n 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e.script&&t.push(this.loadScript(e.script));e.css&&t.push(this.loadCSS(e.css,"qde-hljs-light")),e.cssDark&&t.push(this.loadCSS(e.cssDark,"qde-hljs-dark")),await Promise.all(t),e.css&&e.cssDark&&this._syncHljsTheme(),e.afterLoad&&e.afterLoad()}catch(e){console.warn(`QuikdownEditor: failed to preload ${t}:`,e)}})();n.push(o)}await Promise.all(n)}async lazyLoadLibrary(e,t,n,o=null){if(t())return!0;try{const e=[];return n&&e.push(this.loadScript(n)),o&&e.push(this.loadCSS(o)),await Promise.all(e),t()}catch(t){return console.error(`Failed to load ${e}:`,t),!1}}loadScript(e){return new Promise((t,n)=>{const o=document.createElement("script");o.src=e,o.onload=t,o.onerror=n,document.head.appendChild(o)})}loadCSS(e,t){return new Promise(n=>{const o=document.createElement("link");o.rel="stylesheet",o.href=e,t&&(o.id=t),o.onload=n,document.head.appendChild(o),setTimeout(n,1e3)})}_syncHljsTheme(){const e=this.container.classList.contains("qde-dark"),t=document.getElementById("qde-hljs-light"),n=document.getElementById("qde-hljs-dark");t&&(t.disabled=e),n&&(n.disabled=!e)}applyTheme(){const e=this.options.theme;if(this._autoThemeListener&&(window.matchMedia("(prefers-color-scheme: dark)").removeEventListener("change",this._autoThemeListener),this._autoThemeListener=null),"auto"===e){const e=window.matchMedia("(prefers-color-scheme: dark)");this.container.classList.toggle("qde-dark",e.matches),this._autoThemeListener=e=>{this.container.classList.toggle("qde-dark",e.matches),this._syncHljsTheme()},e.addEventListener("change",this._autoThemeListener)}else this.container.classList.toggle("qde-dark","dark"===e);this._syncHljsTheme()}setTheme(e){["light","dark","auto"].includes(e)&&(this.options.theme=e,this.applyTheme())}getTheme(){return this.options.theme}setLazyLinefeeds(e){this.options.lazy_linefeeds=e,this._markdown&&this.updateFromMarkdown(this._markdown)}getLazyLinefeeds(){return this.options.lazy_linefeeds}setDebounceDelay(e){this.options.debounceDelay=Math.max(0,e)}getDebounceDelay(){return this.options.debounceDelay}setMode(e){if(!["source","preview","split"].includes(e))return;const t=this.container.classList.contains("qde-dark"),n=this.currentMode;if(this.currentMode=e,this.container.className=`qde-container qde-mode-${e}`,t&&this.container.classList.add("qde-dark"),this.toolbar){const e=this.toolbar.querySelector(".qde-split-toggle");e&&(e.textContent="Preview")}this.toolbar&&this.toolbar.querySelectorAll(".qde-btn[data-mode]").forEach(t=>{t.classList.toggle("active",t.dataset.mode===e)}),"source"!==e&&"source"===n&&this._html&&(this.previewPanel.innerHTML=this._html,this._typesetMath(this.previewPanel)),this.options.onModeChange&&this.options.onModeChange(e)}_pushUndoState(e){if(e===this._markdown)return;this._undoStack.push(this._markdown);const t=this.options.undoStackSize||100;this._undoStack.length>t&&this._undoStack.splice(0,this._undoStack.length-t),this._redoStack=[],this._updateUndoButtons()}undo(){if(!this.canUndo())return;this._redoStack.push(this._markdown);const e=this._undoStack.pop();this._isUndoRedo=!0,this._markdown=e,this.sourceTextarea&&(this.sourceTextarea.value=e),this.updateFromMarkdown(e),this._updateUndoButtons()}redo(){if(!this.canRedo())return;this._undoStack.push(this._markdown);const e=this._redoStack.pop();this._isUndoRedo=!0,this._markdown=e,this.sourceTextarea&&(this.sourceTextarea.value=e),this.updateFromMarkdown(e),this._updateUndoButtons()}canUndo(){return this._undoStack.length>0}canRedo(){return this._redoStack.length>0}clearHistory(){this._undoStack=[],this._redoStack=[],this._updateUndoButtons()}_updateUndoButtons(){if(!this.toolbar)return;const e=this.toolbar.querySelector('[data-action="undo"]'),t=this.toolbar.querySelector('[data-action="redo"]');e&&e.classList.toggle("disabled",!this.canUndo()),t&&t.classList.toggle("disabled",!this.canRedo())}handleAction(e){switch(e){case"copy-markdown":this.copy("markdown");break;case"copy-html":this.copy("html");break;case"copy-rendered":this.copyRendered();break;case"remove-hr":this.removeHR();break;case"lazy-linefeeds":this.convertLazyLinefeeds();break;case"undo":this.undo();break;case"redo":this.redo();break;case"toggle-html-mode":this.cycleAllowUnsafeHTML()}}async copy(e){const t="markdown"===e?this._markdown:this._html;try{await navigator.clipboard.writeText(t);const n=this.toolbar.querySelector(`[data-action="copy-${e}"]`);if(n){const e=n.textContent;n.textContent="Copied!",setTimeout(()=>{n.textContent=e},1500)}}catch(e){console.error("Failed to copy:",e)}}get markdown(){return this._markdown}set markdown(e){this.setMarkdown(e)}get html(){return this._html}get mode(){return this.currentMode}async setMarkdown(e){this.initPromise&&await this.initPromise,this._markdown=e,this.sourceTextarea&&(this.sourceTextarea.value=e),this.updateFromMarkdown(e)}getMarkdown(){return this._markdown}getHTML(){return this._html}async removeHR(){const e=R.removeHRFromMarkdown(this._markdown);await this.setMarkdown(e);const t=this.toolbar?.querySelector('[data-action="remove-hr"]');if(t){const e=t.textContent;t.textContent="Removed!",setTimeout(()=>{t.textContent=e},1500)}}static removeHRFromMarkdown(o){const i=(o||"").split("\n"),a=[];let s=!1,l=null,c=0;for(let o=0;o<i.length;o++){const d=i[o],h=d.trim();if(s)n(h,l,c)&&(s=!1,l=null,c=0),a.push(d);else{{const e=t(h);if(e){s=!0,l=e.char,c=e.len,a.push(d);continue}}if(/^\|.*\|$/.test(h)||/^[-| :]+$/.test(h)&&h.includes("|"))a.push(d);else{if(e(h)){const e=o>0?i[o-1].trim():"",t=o<i.length-1?i[o+1].trim():"";if(r(e)||r(t)){a.push(d);continue}continue}a.push(d)}}}return a.join("\n")}async convertLazyLinefeeds(){const e=R.convertLazyLinefeeds(this._markdown);await this.setMarkdown(e);const t=this.toolbar?.querySelector('[data-action="lazy-linefeeds"]');if(t){const e=t.textContent;t.textContent="Converted!",setTimeout(()=>{t.textContent=e},1500)}}static convertLazyLinefeeds(e){const r=(e||"").split("\n"),i=[];let a=!1,s=null,l=0;for(const e of r){const r=e,c=r.trim();if(a){n(c,s,l)?(a=!1,s=null,l=0,i.push({line:r,kind:"fence-close"})):i.push({line:r,kind:"fence-body"});continue}{const e=t(c);if(e){a=!0,s=e.char,l=e.len,i.push({line:r,kind:"fence-open"});continue}}if(""===c){i.push({line:"",kind:"blank"});continue}let d=o(c);"paragraph"===d&&/^(?: {4}|\t| {2,}[-*+]| {2,}\d+\.)/.test(r)&&(d="list-cont"),i.push({line:r,kind:"content",category:d})}const c=[];let d=null;function h(e,t){return!(!e||!t)&&(!("list-ul"!==e.category&&"list-ol"!==e.category&&"list-cont"!==e.category||"list-ul"!==t.category&&"list-ol"!==t.category&&"list-cont"!==t.category)||("blockquote"===e.category&&"blockquote"===t.category||"table"===e.category&&"table"===t.category))}for(const e of i)"fence-open"!==e.kind&&"fence-body"!==e.kind&&"fence-close"!==e.kind?"blank"!==e.kind&&(d&&(h(d,e)||""!==c[c.length-1]&&c.push("")),c.push(e.line),d=e):("fence-open"===e.kind&&d&&c.length>0&&""!==c[c.length-1]&&c.push(""),c.push(e.line),"fence-close"===e.kind&&(d={kind:"content",category:"fence"}));for(;c.length>0&&""===c[c.length-1];)c.pop();return c.join("\n")}async copyRendered(e="default"){try{if((await N(this.previewPanel,{output:e})).success){const e=this.toolbar?.querySelector('[data-action="copy-rendered"]');if(e){const t=e.textContent;e.textContent="Copied!",setTimeout(()=>{e.textContent=t},1500)}}}catch(e){console.error("Failed to copy rendered content:",e)}}_getHtmlModeLabel(e){return!0===e?"HTML: Raw":"limited"===e?"HTML: Safe":"HTML: Off"}_getHtmlModeTooltip(e){return!0===e?"All HTML passes through — no protection":"limited"===e?"Safe tags render, dangerous tags escaped":"All HTML tags shown as text"}cycleAllowUnsafeHTML(){const e=this.options.allowUnsafeHTML;let t;t=!1===e?"limited":"limited"===e,this.setAllowUnsafeHTML(t)}setAllowUnsafeHTML(e){if(!1===e||!0===e||"limited"===e){if(this.options.allowUnsafeHTML=e,this.toolbar){const t=this.toolbar.querySelector('[data-action="toggle-html-mode"]');t&&(t.textContent=this._getHtmlModeLabel(e),t.title=this._getHtmlModeTooltip(e))}this.updateFromMarkdown(this._markdown)}}getAllowUnsafeHTML(){return this.options.allowUnsafeHTML}destroy(){clearTimeout(this.updateTimer),this.container.innerHTML="",this.container.classList.remove("qde-container","qde-dark");if(0===document.querySelectorAll(".qde-container").length){const e=document.getElementById("qde-styles");e&&e.remove()}}}R.SAFE_HTML_TAGS=F,R.version="1.2.22","undefined"!=typeof module&&module.exports&&(module.exports=R),"undefined"!=typeof window&&(window.QuikdownEditor=R);export{R as default};
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