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🚧 Added support for markdown preview footnotes

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This commit is contained in:
landaiqing
2025-12-02 00:22:22 +08:00
parent dd3dd4ddb2
commit 17f3351cea
15 changed files with 1306 additions and 637 deletions
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3
frontend/src/views/editor/extensions/codeblock/lang-parser/languages.ts
View File

@@ -10,6 +10,7 @@ import {StandardSQL} from "@codemirror/lang-sql";
import {markdown, markdownLanguage} from "@codemirror/lang-markdown"; import {markdown, markdownLanguage} from "@codemirror/lang-markdown";
import {Subscript, Superscript, Table} from "@lezer/markdown"; import {Subscript, Superscript, Table} from "@lezer/markdown";
import {Highlight} from "@/views/editor/extensions/markdown/syntax/highlight"; import {Highlight} from "@/views/editor/extensions/markdown/syntax/highlight";
import {Footnote} from "@/views/editor/extensions/markdown/syntax/footnote";
import {javaLanguage} from "@codemirror/lang-java"; import {javaLanguage} from "@codemirror/lang-java";
import {phpLanguage} from "@codemirror/lang-php"; import {phpLanguage} from "@codemirror/lang-php";
import {cssLanguage} from "@codemirror/lang-css"; import {cssLanguage} from "@codemirror/lang-css";
@@ -115,7 +116,7 @@ export const LANGUAGES: LanguageInfo[] = [
}), }),
new LanguageInfo("md", "Markdown", markdown({ new LanguageInfo("md", "Markdown", markdown({
base: markdownLanguage, base: markdownLanguage,
extensions: [Subscript, Superscript, Highlight, Table], extensions: [Subscript, Superscript, Highlight, Footnote, Table],
completeHTMLTags: true, completeHTMLTags: true,
pasteURLAsLink: true, pasteURLAsLink: true,
htmlTagLanguage: html({ htmlTagLanguage: html({

94
frontend/src/views/editor/extensions/markdown/classes.ts
View File

@@ -1,94 +0,0 @@
/**
* A single source of truth for all the classes used for decorations in Ixora.
* These are kept together here to simplify changing/adding classes later
* and serve as a reference.
*
* Exports under this file don't need to follow any particular naming schema,
* naming which can give an intuition on what the class is for is preferred.
*/
/** Classes for blockquote decorations. */
export const blockquote = {
/** Blockquote widget */
widget: 'cm-blockquote',
/** Replace decoration for the quote mark */
mark: 'cm-blockquote-border'
},
/** Classes for codeblock decorations. */
codeblock = {
/** Codeblock widget */
widget: 'cm-codeblock',
/** First line of the codeblock widget */
widgetBegin: 'cm-codeblock-begin',
/** Last line of the codeblock widget */
widgetEnd: 'cm-codeblock-end'
},
/** Classes for heading decorations. */
heading = {
/** Heading decoration class */
heading: 'cm-heading',
/** Heading levels (h1, h2, etc) */
level: (level: number) => `cm-heading-${level}`,
/** Heading slug */
slug: (slug: string) => `cm-heading-slug-${slug}`
},
/** Classes for link (URL) widgets. */
link = {
/** URL widget */
widget: 'cm-link'
},
/** Classes for list widgets. */
list = {
/** List bullet */
bullet: 'cm-list-bullet',
/** List task checkbox */
taskCheckbox: 'cm-task-marker-checkbox',
/** Task list item with checkbox checked */
taskChecked: 'cm-task-checked'
},
/** Classes for image widgets. */
image = {
/** Image preview */
widget: 'cm-image'
},
/** Classes for enhanced code block decorations. */
codeblockEnhanced = {
/** Code block info container */
info: 'cm-code-block-info',
/** Language label */
lang: 'cm-code-block-lang',
/** Copy button */
copyBtn: 'cm-code-block-copy-btn'
},
/** Classes for table decorations. */
table = {
/** Table container wrapper */
wrapper: 'cm-table-wrapper',
/** The rendered table element */
table: 'cm-table',
/** Table header row */
header: 'cm-table-header',
/** Table header cell */
headerCell: 'cm-table-header-cell',
/** Table body */
body: 'cm-table-body',
/** Table data row */
row: 'cm-table-row',
/** Table data cell */
cell: 'cm-table-cell',
/** Cell alignment classes */
alignLeft: 'cm-table-align-left',
alignCenter: 'cm-table-align-center',
alignRight: 'cm-table-align-right',
/** Cell content wrapper (for editing) */
cellContent: 'cm-table-cell-content',
/** Resize handle */
resizeHandle: 'cm-table-resize-handle',
/** Active editing cell */
cellActive: 'cm-table-cell-active',
/** Row hover state */
rowHover: 'cm-table-row-hover',
/** Selected cell */
cellSelected: 'cm-table-cell-selected'
}

7
frontend/src/views/editor/extensions/markdown/index.ts
View File

@@ -3,7 +3,6 @@ import { blockquote } from './plugins/blockquote';
import { codeblock } from './plugins/code-block'; import { codeblock } from './plugins/code-block';
import { headings } from './plugins/heading'; import { headings } from './plugins/heading';
import { hideMarks } from './plugins/hide-mark'; import { hideMarks } from './plugins/hide-mark';
import { htmlBlockExtension } from './plugins/html';
import { image } from './plugins/image'; import { image } from './plugins/image';
import { links } from './plugins/link'; import { links } from './plugins/link';
import { lists } from './plugins/list'; import { lists } from './plugins/list';
@@ -13,8 +12,7 @@ import { horizontalRule } from './plugins/horizontal-rule';
import { inlineCode } from './plugins/inline-code'; import { inlineCode } from './plugins/inline-code';
import { subscriptSuperscript } from './plugins/subscript-superscript'; import { subscriptSuperscript } from './plugins/subscript-superscript';
import { highlight } from './plugins/highlight'; import { highlight } from './plugins/highlight';
import { table } from './plugins/table'; import { footnote } from './plugins/footnote';
/** /**
* markdown extensions * markdown extensions
@@ -28,13 +26,12 @@ export const markdownExtensions: Extension = [
lists(), lists(),
links(), links(),
image(), image(),
htmlBlockExtension,
emoji(), emoji(),
horizontalRule(), horizontalRule(),
inlineCode(), inlineCode(),
subscriptSuperscript(), subscriptSuperscript(),
highlight(), highlight(),
table(), footnote(),
]; ];
export default markdownExtensions; export default markdownExtensions;

5
frontend/src/views/editor/extensions/markdown/plugins/blockquote.ts
View File

@@ -8,7 +8,6 @@ import {
import { Range } from '@codemirror/state'; import { Range } from '@codemirror/state';
import { syntaxTree } from '@codemirror/language'; import { syntaxTree } from '@codemirror/language';
import { isCursorInRange, invisibleDecoration } from '../util'; import { isCursorInRange, invisibleDecoration } from '../util';
import { blockquote as classes } from '../classes';
/** /**
* Blockquote plugin. * Blockquote plugin.
@@ -47,7 +46,7 @@ function buildBlockQuoteDecorations(view: EditorView): DecorationSet {
processedLines.add(i); processedLines.add(i);
const line = view.state.doc.line(i); const line = view.state.doc.line(i);
decorations.push( decorations.push(
Decoration.line({ class: classes.widget }).range(line.from) Decoration.line({ class: 'cm-blockquote' }).range(line.from)
); );
} }
} }
@@ -96,7 +95,7 @@ const blockQuotePlugin = ViewPlugin.fromClass(BlockQuotePlugin, {
* Base theme for blockquotes. * Base theme for blockquotes.
*/ */
const baseTheme = EditorView.baseTheme({ const baseTheme = EditorView.baseTheme({
[`.${classes.widget}`]: { '.cm-blockquote': {
borderLeft: '4px solid var(--cm-blockquote-border, #ccc)', borderLeft: '4px solid var(--cm-blockquote-border, #ccc)',
color: 'var(--cm-blockquote-color, #666)' color: 'var(--cm-blockquote-color, #666)'
} }

137
frontend/src/views/editor/extensions/markdown/plugins/code-block.ts
View File

@@ -9,7 +9,6 @@ import {
} from '@codemirror/view'; } from '@codemirror/view';
import { syntaxTree } from '@codemirror/language'; import { syntaxTree } from '@codemirror/language';
import { isCursorInRange } from '../util'; import { isCursorInRange } from '../util';
import { codeblock as classes, codeblockEnhanced as enhancedClasses } from '../classes';
/** Code block node types in syntax tree */ /** Code block node types in syntax tree */
const CODE_BLOCK_TYPES = ['FencedCode', 'CodeBlock'] as const; const CODE_BLOCK_TYPES = ['FencedCode', 'CodeBlock'] as const;
@@ -22,7 +21,7 @@ const ICON_CHECK = `<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" s
interface CodeBlockData { interface CodeBlockData {
from: number; from: number;
to: number; to: number;
language: string; language: string | null;
content: string; content: string;
} }
@@ -39,10 +38,13 @@ export const codeblock = (): Extension => [codeBlockPlugin, baseTheme];
/** /**
* Widget for displaying language label and copy button. * Widget for displaying language label and copy button.
* Uses ignoreEvent: true to prevent editor focus changes. * Handles click events directly on the button element.
*/ */
class CodeBlockInfoWidget extends WidgetType { class CodeBlockInfoWidget extends WidgetType {
constructor(readonly data: CodeBlockData) { constructor(
readonly data: CodeBlockData,
readonly view: EditorView
) {
super(); super();
} }
@@ -53,26 +55,51 @@ class CodeBlockInfoWidget extends WidgetType {
toDOM(): HTMLElement { toDOM(): HTMLElement {
const container = document.createElement('span'); const container = document.createElement('span');
container.className = enhancedClasses.info; container.className = 'cm-code-block-info';
container.dataset.codeFrom = String(this.data.from);
// Language label // Only show language label if specified
if (this.data.language) {
const lang = document.createElement('span'); const lang = document.createElement('span');
lang.className = enhancedClasses.lang; lang.className = 'cm-code-block-lang';
lang.textContent = this.data.language; lang.textContent = this.data.language;
container.append(lang);
}
// Copy button
const btn = document.createElement('button'); const btn = document.createElement('button');
btn.className = enhancedClasses.copyBtn; btn.className = 'cm-code-block-copy-btn';
btn.title = 'Copy'; btn.title = 'Copy';
btn.innerHTML = ICON_COPY; btn.innerHTML = ICON_COPY;
btn.dataset.codeContent = this.data.content;
container.append(lang, btn); // Direct click handler - more reliable than eventHandlers
btn.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
this.handleCopy(btn);
});
// Prevent mousedown from affecting editor
btn.addEventListener('mousedown', (e) => {
e.preventDefault();
e.stopPropagation();
});
container.append(btn);
return container; return container;
} }
// Critical: ignore all events to prevent editor focus private handleCopy(btn: HTMLButtonElement): void {
const content = getCodeContent(this.view, this.data.from, this.data.to);
if (!content) return;
navigator.clipboard.writeText(content).then(() => {
btn.innerHTML = ICON_CHECK;
setTimeout(() => {
btn.innerHTML = ICON_COPY;
}, 1500);
});
}
// Ignore events to prevent editor focus changes
ignoreEvent(): boolean { ignoreEvent(): boolean {
return true; return true;
} }
@@ -127,33 +154,28 @@ function buildDecorations(view: EditorView): { decorations: DecorationSet; block
const startLine = view.state.doc.lineAt(nodeFrom); const startLine = view.state.doc.lineAt(nodeFrom);
const endLine = view.state.doc.lineAt(nodeTo); const endLine = view.state.doc.lineAt(nodeTo);
// Line decorations
for (let num = startLine.number; num <= endLine.number; num++) { for (let num = startLine.number; num <= endLine.number; num++) {
const line = view.state.doc.line(num); const line = view.state.doc.line(num);
const pos: string[] = []; const pos: string[] = ['cm-codeblock'];
if (num === startLine.number) pos.push(classes.widgetBegin); if (num === startLine.number) pos.push('cm-codeblock-begin');
if (num === endLine.number) pos.push(classes.widgetEnd); if (num === endLine.number) pos.push('cm-codeblock-end');
decorations.push( decorations.push(
Decoration.line({ Decoration.line({ class: pos.join(' ') }).range(line.from)
class: `${classes.widget} ${pos.join(' ')}`.trim()
}).range(line.from)
); );
} }
// Info widget (only if language specified) // Info widget with copy button (always show, language label only if specified)
if (language) {
const content = getCodeContent(view, nodeFrom, nodeTo); const content = getCodeContent(view, nodeFrom, nodeTo);
const data: CodeBlockData = { from: nodeFrom, to: nodeTo, language, content }; const data: CodeBlockData = { from: nodeFrom, to: nodeTo, language, content };
blocks.set(nodeFrom, data); blocks.set(nodeFrom, data);
decorations.push( decorations.push(
Decoration.widget({ Decoration.widget({
widget: new CodeBlockInfoWidget(data), widget: new CodeBlockInfoWidget(data, view),
side: 1 side: 1
}).range(startLine.to) }).range(startLine.to)
); );
}
// Hide markers // Hide markers
node.toTree().iterate({ node.toTree().iterate({
@@ -170,21 +192,6 @@ function buildDecorations(view: EditorView): { decorations: DecorationSet; block
return { decorations: Decoration.set(decorations, true), blocks }; return { decorations: Decoration.set(decorations, true), blocks };
} }
/**
* Handle copy button click.
*/
function handleCopyClick(btn: HTMLButtonElement): void {
const content = btn.dataset.codeContent;
if (!content) return;
navigator.clipboard.writeText(content).then(() => {
btn.innerHTML = ICON_CHECK;
setTimeout(() => {
btn.innerHTML = ICON_COPY;
}, 1500);
});
}
/** /**
* Code block plugin with optimized updates. * Code block plugin with optimized updates.
*/ */
@@ -225,54 +232,28 @@ class CodeBlockPluginClass {
} }
const codeBlockPlugin = ViewPlugin.fromClass(CodeBlockPluginClass, { const codeBlockPlugin = ViewPlugin.fromClass(CodeBlockPluginClass, {
decorations: (v) => v.decorations, decorations: (v) => v.decorations
eventHandlers: {
// Handle copy button clicks without triggering editor focus
mousedown(e: MouseEvent, view: EditorView) {
const target = e.target as HTMLElement;
// Check if clicked on copy button or its SVG child
const btn = target.closest(`.${enhancedClasses.copyBtn}`) as HTMLButtonElement;
if (btn) {
e.preventDefault();
e.stopPropagation();
handleCopyClick(btn);
return true;
}
// Check if clicked on info container (language label)
if (target.closest(`.${enhancedClasses.info}`)) {
e.preventDefault();
e.stopPropagation();
return true;
}
return false;
}
}
}); });
/** /**
* Base theme for code blocks. * Base theme for code blocks.
*/ */
const baseTheme = EditorView.baseTheme({ const baseTheme = EditorView.baseTheme({
[`.${classes.widget}`]: { '.cm-codeblock': {
backgroundColor: 'var(--cm-codeblock-bg)' backgroundColor: 'var(--cm-codeblock-bg)'
}, },
[`.${classes.widgetBegin}`]: { '.cm-codeblock-begin': {
borderTopLeftRadius: 'var(--cm-codeblock-radius)', borderTopLeftRadius: 'var(--cm-codeblock-radius)',
borderTopRightRadius: 'var(--cm-codeblock-radius)', borderTopRightRadius: 'var(--cm-codeblock-radius)',
position: 'relative', position: 'relative',
borderTop: '1px solid var(--text-primary)' boxShadow: 'inset 0 1px 0 var(--text-primary)'
}, },
[`.${classes.widgetEnd}`]: { '.cm-codeblock-end': {
borderBottomLeftRadius: 'var(--cm-codeblock-radius)', borderBottomLeftRadius: 'var(--cm-codeblock-radius)',
borderBottomRightRadius: 'var(--cm-codeblock-radius)', borderBottomRightRadius: 'var(--cm-codeblock-radius)',
borderBottom: '1px solid var(--text-primary)' boxShadow: 'inset 0 -1px 0 var(--text-primary)'
}, },
// Info container '.cm-code-block-info': {
[`.${enhancedClasses.info}`]: {
position: 'absolute', position: 'absolute',
right: '8px', right: '8px',
top: '50%', top: '50%',
@@ -284,17 +265,15 @@ const baseTheme = EditorView.baseTheme({
opacity: '0.5', opacity: '0.5',
transition: 'opacity 0.15s' transition: 'opacity 0.15s'
}, },
[`.${enhancedClasses.info}:hover`]: { '.cm-code-block-info:hover': {
opacity: '1' opacity: '1'
}, },
// Language label '.cm-code-block-lang': {
[`.${enhancedClasses.lang}`]: {
color: 'var(--cm-codeblock-lang, var(--cm-foreground))', color: 'var(--cm-codeblock-lang, var(--cm-foreground))',
textTransform: 'lowercase', textTransform: 'lowercase',
userSelect: 'none' userSelect: 'none'
}, },
// Copy button '.cm-code-block-copy-btn': {
[`.${enhancedClasses.copyBtn}`]: {
display: 'inline-flex', display: 'inline-flex',
alignItems: 'center', alignItems: 'center',
justifyContent: 'center', justifyContent: 'center',
@@ -307,11 +286,11 @@ const baseTheme = EditorView.baseTheme({
opacity: '0.7', opacity: '0.7',
transition: 'opacity 0.15s, background 0.15s' transition: 'opacity 0.15s, background 0.15s'
}, },
[`.${enhancedClasses.copyBtn}:hover`]: { '.cm-code-block-copy-btn:hover': {
opacity: '1', opacity: '1',
background: 'rgba(128, 128, 128, 0.2)' background: 'rgba(128, 128, 128, 0.2)'
}, },
[`.${enhancedClasses.copyBtn} svg`]: { '.cm-code-block-copy-btn svg': {
width: '1em', width: '1em',
height: '1em' height: '1em'
} }

3
frontend/src/views/editor/extensions/markdown/plugins/emoji.ts
View File

@@ -157,11 +157,10 @@ const emojiPlugin = ViewPlugin.fromClass(EmojiPlugin, {
/** /**
* Base theme for emoji. * Base theme for emoji.
* Inherits font size and line height from parent element.
*/ */
const baseTheme = EditorView.baseTheme({ const baseTheme = EditorView.baseTheme({
'.cm-emoji': { '.cm-emoji': {
fontSize: '1.2em',
lineHeight: '1',
verticalAlign: 'middle', verticalAlign: 'middle',
cursor: 'default' cursor: 'default'
} }

754
frontend/src/views/editor/extensions/markdown/plugins/footnote.ts Normal file
View File

@@ -0,0 +1,754 @@
/**
* Footnote plugin for CodeMirror.
*
* Features:
* - Renders footnote references as superscript numbers/labels
* - Renders inline footnotes as superscript numbers with embedded content
* - Shows footnote content on hover (tooltip)
* - Click to jump between reference and definition
* - Hides syntax marks when cursor is outside
*
* Syntax (MultiMarkdown/PHP Markdown Extra):
* - Reference: [^id] → renders as superscript
* - Definition: [^id]: content
* - Inline footnote: ^[content] → renders as superscript with embedded content
*/
import { Extension, Range, StateField, EditorState } from '@codemirror/state';
import { syntaxTree } from '@codemirror/language';
import {
ViewPlugin,
DecorationSet,
Decoration,
EditorView,
ViewUpdate,
WidgetType,
hoverTooltip,
Tooltip,
} from '@codemirror/view';
import { isCursorInRange, invisibleDecoration } from '../util';
// ============================================================================
// Types
// ============================================================================
/**
* Information about a footnote definition.
*/
interface FootnoteDefinition {
/** The footnote identifier (e.g., "1", "note") */
id: string;
/** The content of the footnote */
content: string;
/** Start position in document */
from: number;
/** End position in document */
to: number;
}
/**
* Information about a footnote reference.
*/
interface FootnoteReference {
/** The footnote identifier */
id: string;
/** Start position in document */
from: number;
/** End position in document */
to: number;
/** Numeric index (1-based, for display) */
index: number;
}
/**
* Information about an inline footnote.
*/
interface InlineFootnoteInfo {
/** The content of the inline footnote */
content: string;
/** Start position in document */
from: number;
/** End position in document */
to: number;
/** Numeric index (1-based, for display) */
index: number;
}
/**
* Collected footnote data from the document.
* Uses Maps for O(1) lookup by position and id.
*/
interface FootnoteData {
definitions: Map<string, FootnoteDefinition>;
references: FootnoteReference[];
inlineFootnotes: InlineFootnoteInfo[];
// Index maps for O(1) lookup
referencesByPos: Map<number, FootnoteReference>;
inlineByPos: Map<number, InlineFootnoteInfo>;
firstRefById: Map<string, FootnoteReference>;
}
// ============================================================================
// Footnote Collection
// ============================================================================
/**
* Collect all footnote definitions, references, and inline footnotes from the document.
* Builds index maps for O(1) lookup during decoration and tooltip handling.
*/
function collectFootnotes(state: EditorState): FootnoteData {
const definitions = new Map<string, FootnoteDefinition>();
const references: FootnoteReference[] = [];
const inlineFootnotes: InlineFootnoteInfo[] = [];
// Index maps for fast lookup
const referencesByPos = new Map<number, FootnoteReference>();
const inlineByPos = new Map<number, InlineFootnoteInfo>();
const firstRefById = new Map<string, FootnoteReference>();
const seenIds = new Map<string, number>();
let inlineIndex = 0;
syntaxTree(state).iterate({
enter: ({ type, from, to, node }) => {
if (type.name === 'FootnoteDefinition') {
const labelNode = node.getChild('FootnoteDefinitionLabel');
const contentNode = node.getChild('FootnoteDefinitionContent');
if (labelNode) {
const id = state.sliceDoc(labelNode.from, labelNode.to);
const content = contentNode
? state.sliceDoc(contentNode.from, contentNode.to).trim()
: '';
definitions.set(id, { id, content, from, to });
}
} else if (type.name === 'FootnoteReference') {
const labelNode = node.getChild('FootnoteReferenceLabel');
if (labelNode) {
const id = state.sliceDoc(labelNode.from, labelNode.to);
if (!seenIds.has(id)) {
seenIds.set(id, seenIds.size + 1);
}
const ref: FootnoteReference = {
id,
from,
to,
index: seenIds.get(id)!,
};
references.push(ref);
referencesByPos.set(from, ref);
// Track first reference for each id
if (!firstRefById.has(id)) {
firstRefById.set(id, ref);
}
}
} else if (type.name === 'InlineFootnote') {
const contentNode = node.getChild('InlineFootnoteContent');
if (contentNode) {
const content = state.sliceDoc(contentNode.from, contentNode.to).trim();
inlineIndex++;
const info: InlineFootnoteInfo = {
content,
from,
to,
index: inlineIndex,
};
inlineFootnotes.push(info);
inlineByPos.set(from, info);
}
}
},
});
return {
definitions,
references,
inlineFootnotes,
referencesByPos,
inlineByPos,
firstRefById,
};
}
// ============================================================================
// State Field
// ============================================================================
/**
* State field to track footnote data across the document.
* This allows efficient lookup for tooltips and navigation.
*/
export const footnoteDataField = StateField.define<FootnoteData>({
create(state) {
return collectFootnotes(state);
},
update(value, tr) {
if (tr.docChanged) {
return collectFootnotes(tr.state);
}
return value;
},
});
// ============================================================================
// Widget
// ============================================================================
/**
* Widget to display footnote reference as superscript.
*/
class FootnoteRefWidget extends WidgetType {
constructor(
readonly id: string,
readonly index: number,
readonly hasDefinition: boolean
) {
super();
}
toDOM(): HTMLElement {
const span = document.createElement('span');
span.className = 'cm-footnote-ref';
span.textContent = String(this.index);
span.dataset.footnoteId = this.id;
if (!this.hasDefinition) {
span.classList.add('cm-footnote-ref-undefined');
}
return span;
}
eq(other: FootnoteRefWidget): boolean {
return this.id === other.id && this.index === other.index;
}
ignoreEvent(): boolean {
return false;
}
}
/**
* Widget to display inline footnote as superscript.
*/
class InlineFootnoteWidget extends WidgetType {
constructor(
readonly content: string,
readonly index: number
) {
super();
}
toDOM(): HTMLElement {
const span = document.createElement('span');
span.className = 'cm-inline-footnote-ref';
span.textContent = String(this.index);
span.dataset.footnoteContent = this.content;
span.dataset.footnoteIndex = String(this.index);
return span;
}
eq(other: InlineFootnoteWidget): boolean {
return this.content === other.content && this.index === other.index;
}
ignoreEvent(): boolean {
return false;
}
}
// ============================================================================
// Decorations
// ============================================================================
/**
* Build decorations for footnote references and inline footnotes.
*/
function buildDecorations(view: EditorView): DecorationSet {
const decorations: Range<Decoration>[] = [];
const data = view.state.field(footnoteDataField);
for (const { from, to } of view.visibleRanges) {
syntaxTree(view.state).iterate({
from,
to,
enter: ({ type, from: nodeFrom, to: nodeTo, node }) => {
// Handle footnote references
if (type.name === 'FootnoteReference') {
const cursorInRange = isCursorInRange(view.state, [nodeFrom, nodeTo]);
const labelNode = node.getChild('FootnoteReferenceLabel');
const marks = node.getChildren('FootnoteReferenceMark');
if (!labelNode || marks.length < 2) return;
const id = view.state.sliceDoc(labelNode.from, labelNode.to);
const ref = data.referencesByPos.get(nodeFrom);
if (!cursorInRange && ref && ref.id === id) {
// Hide the entire syntax and show widget
decorations.push(invisibleDecoration.range(nodeFrom, nodeTo));
// Add widget at the end
const widget = new FootnoteRefWidget(
id,
ref.index,
data.definitions.has(id)
);
decorations.push(
Decoration.widget({
widget,
side: 1,
}).range(nodeTo)
);
}
}
// Handle footnote definitions
if (type.name === 'FootnoteDefinition') {
const cursorInRange = isCursorInRange(view.state, [nodeFrom, nodeTo]);
const marks = node.getChildren('FootnoteDefinitionMark');
const labelNode = node.getChild('FootnoteDefinitionLabel');
if (!cursorInRange && marks.length >= 2 && labelNode) {
// Hide the [^ and ]: marks
decorations.push(invisibleDecoration.range(marks[0].from, marks[0].to));
decorations.push(invisibleDecoration.range(marks[1].from, marks[1].to));
// Style the label as definition marker
decorations.push(
Decoration.mark({
class: 'cm-footnote-def-label',
}).range(labelNode.from, labelNode.to)
);
}
}
// Handle inline footnotes
if (type.name === 'InlineFootnote') {
const cursorInRange = isCursorInRange(view.state, [nodeFrom, nodeTo]);
const contentNode = node.getChild('InlineFootnoteContent');
const marks = node.getChildren('InlineFootnoteMark');
if (!contentNode || marks.length < 2) return;
const inlineNote = data.inlineByPos.get(nodeFrom);
if (!cursorInRange && inlineNote) {
// Hide the entire syntax and show widget
decorations.push(invisibleDecoration.range(nodeFrom, nodeTo));
// Add widget at the end
const widget = new InlineFootnoteWidget(
inlineNote.content,
inlineNote.index
);
decorations.push(
Decoration.widget({
widget,
side: 1,
}).range(nodeTo)
);
}
}
},
});
}
return Decoration.set(decorations, true);
}
// ============================================================================
// Plugin Class
// ============================================================================
/**
* Footnote view plugin with optimized update detection.
*/
class FootnotePlugin {
decorations: DecorationSet;
private lastSelectionHead: number = -1;
constructor(view: EditorView) {
this.decorations = buildDecorations(view);
this.lastSelectionHead = view.state.selection.main.head;
}
update(update: ViewUpdate) {
if (update.docChanged || update.viewportChanged) {
this.decorations = buildDecorations(update.view);
this.lastSelectionHead = update.state.selection.main.head;
return;
}
if (update.selectionSet) {
const newHead = update.state.selection.main.head;
if (newHead !== this.lastSelectionHead) {
this.decorations = buildDecorations(update.view);
this.lastSelectionHead = newHead;
}
}
}
}
const footnotePlugin = ViewPlugin.fromClass(FootnotePlugin, {
decorations: (v) => v.decorations,
});
// ============================================================================
// Hover Tooltip
// ============================================================================
/**
* Hover tooltip that shows footnote content.
*/
const footnoteHoverTooltip = hoverTooltip(
(view, pos): Tooltip | null => {
const data = view.state.field(footnoteDataField);
// Check if hovering over a footnote reference widget
const target = document.elementFromPoint(
view.coordsAtPos(pos)?.left ?? 0,
view.coordsAtPos(pos)?.top ?? 0
) as HTMLElement | null;
if (target?.classList.contains('cm-footnote-ref')) {
const id = target.dataset.footnoteId;
if (id) {
const def = data.definitions.get(id);
if (def) {
return {
pos,
above: true,
arrow: true,
create: () => createTooltipDom(id, def.content),
};
}
}
}
// Check if hovering over an inline footnote widget
if (target?.classList.contains('cm-inline-footnote-ref')) {
const content = target.dataset.footnoteContent;
const index = target.dataset.footnoteIndex;
if (content && index) {
return {
pos,
above: true,
arrow: true,
create: () => createInlineTooltipDom(parseInt(index), content),
};
}
}
// Check if position is within a footnote reference node
let foundId: string | null = null;
let foundPos: number = pos;
let foundInlineContent: string | null = null;
let foundInlineIndex: number | null = null;
syntaxTree(view.state).iterate({
from: pos,
to: pos,
enter: ({ type, from, to, node }) => {
if (type.name === 'FootnoteReference') {
const labelNode = node.getChild('FootnoteReferenceLabel');
if (labelNode && pos >= from && pos <= to) {
foundId = view.state.sliceDoc(labelNode.from, labelNode.to);
foundPos = to;
}
} else if (type.name === 'InlineFootnote') {
const contentNode = node.getChild('InlineFootnoteContent');
if (contentNode && pos >= from && pos <= to) {
foundInlineContent = view.state.sliceDoc(contentNode.from, contentNode.to);
const inlineNote = data.inlineByPos.get(from);
if (inlineNote) {
foundInlineIndex = inlineNote.index;
}
foundPos = to;
}
}
},
});
if (foundId) {
const def = data.definitions.get(foundId);
if (def) {
const tooltipId = foundId;
const tooltipPos = foundPos;
return {
pos: tooltipPos,
above: true,
arrow: true,
create: () => createTooltipDom(tooltipId, def.content),
};
}
}
if (foundInlineContent && foundInlineIndex !== null) {
const tooltipContent = foundInlineContent;
const tooltipIndex = foundInlineIndex;
const tooltipPos = foundPos;
return {
pos: tooltipPos,
above: true,
arrow: true,
create: () => createInlineTooltipDom(tooltipIndex, tooltipContent),
};
}
return null;
},
{ hoverTime: 300 }
);
/**
* Create tooltip DOM element for regular footnote.
*/
function createTooltipDom(id: string, content: string): { dom: HTMLElement } {
const dom = document.createElement('div');
dom.className = 'cm-footnote-tooltip';
const header = document.createElement('div');
header.className = 'cm-footnote-tooltip-header';
header.textContent = `[^${id}]`;
const body = document.createElement('div');
body.className = 'cm-footnote-tooltip-body';
body.textContent = content || '(Empty footnote)';
dom.appendChild(header);
dom.appendChild(body);
return { dom };
}
/**
* Create tooltip DOM element for inline footnote.
*/
function createInlineTooltipDom(index: number, content: string): { dom: HTMLElement } {
const dom = document.createElement('div');
dom.className = 'cm-footnote-tooltip';
const header = document.createElement('div');
header.className = 'cm-footnote-tooltip-header';
header.textContent = `Inline Footnote [${index}]`;
const body = document.createElement('div');
body.className = 'cm-footnote-tooltip-body';
body.textContent = content || '(Empty footnote)';
dom.appendChild(header);
dom.appendChild(body);
return { dom };
}
// ============================================================================
// Click Handler
// ============================================================================
/**
* Click handler for footnote navigation.
* Uses mousedown to intercept before editor moves cursor.
* - Click on reference → jump to definition
* - Click on definition label → jump to first reference
*/
const footnoteClickHandler = EditorView.domEventHandlers({
mousedown(event, view) {
const target = event.target as HTMLElement;
// Handle click on footnote reference widget
if (target.classList.contains('cm-footnote-ref')) {
const id = target.dataset.footnoteId;
if (id) {
const data = view.state.field(footnoteDataField);
const def = data.definitions.get(id);
if (def) {
// Prevent default to stop cursor from moving to widget position
event.preventDefault();
// Use setTimeout to dispatch after mousedown completes
setTimeout(() => {
view.dispatch({
selection: { anchor: def.from },
scrollIntoView: true,
});
view.focus();
}, 0);
return true;
}
}
}
// Handle click on definition label
if (target.classList.contains('cm-footnote-def-label')) {
const pos = view.posAtDOM(target);
if (pos !== null) {
const data = view.state.field(footnoteDataField);
// Find which definition this belongs to
for (const [id, def] of data.definitions) {
if (pos >= def.from && pos <= def.to) {
// O(1) lookup for first reference
const firstRef = data.firstRefById.get(id);
if (firstRef) {
event.preventDefault();
setTimeout(() => {
view.dispatch({
selection: { anchor: firstRef.from },
scrollIntoView: true,
});
view.focus();
}, 0);
return true;
}
break;
}
}
}
}
return false;
},
});
// ============================================================================
// Theme
// ============================================================================
/**
* Base theme for footnotes.
*/
const baseTheme = EditorView.baseTheme({
// Footnote reference (superscript)
'.cm-footnote-ref': {
display: 'inline-flex',
alignItems: 'center',
justifyContent: 'center',
minWidth: '1em',
height: '1.2em',
padding: '0 0.25em',
marginLeft: '1px',
fontSize: '0.75em',
fontWeight: '500',
lineHeight: '1',
verticalAlign: 'super',
color: 'var(--cm-footnote-color, #1a73e8)',
backgroundColor: 'var(--cm-footnote-bg, rgba(26, 115, 232, 0.1))',
borderRadius: '3px',
cursor: 'pointer',
transition: 'all 0.15s ease',
textDecoration: 'none',
},
'.cm-footnote-ref:hover': {
color: 'var(--cm-footnote-hover-color, #1557b0)',
backgroundColor: 'var(--cm-footnote-hover-bg, rgba(26, 115, 232, 0.2))',
},
'.cm-footnote-ref-undefined': {
color: 'var(--cm-footnote-undefined-color, #d93025)',
backgroundColor: 'var(--cm-footnote-undefined-bg, rgba(217, 48, 37, 0.1))',
},
// Inline footnote reference (superscript) - uses distinct color
'.cm-inline-footnote-ref': {
display: 'inline-flex',
alignItems: 'center',
justifyContent: 'center',
minWidth: '1em',
height: '1.2em',
padding: '0 0.25em',
marginLeft: '1px',
fontSize: '0.75em',
fontWeight: '500',
lineHeight: '1',
verticalAlign: 'super',
color: 'var(--cm-inline-footnote-color, #e67e22)',
backgroundColor: 'var(--cm-inline-footnote-bg, rgba(230, 126, 34, 0.1))',
borderRadius: '3px',
cursor: 'pointer',
transition: 'all 0.15s ease',
textDecoration: 'none',
},
'.cm-inline-footnote-ref:hover': {
color: 'var(--cm-inline-footnote-hover-color, #d35400)',
backgroundColor: 'var(--cm-inline-footnote-hover-bg, rgba(230, 126, 34, 0.2))',
},
// Footnote definition label
'.cm-footnote-def-label': {
color: 'var(--cm-footnote-def-color, #1a73e8)',
fontWeight: '600',
cursor: 'pointer',
},
'.cm-footnote-def-label:hover': {
textDecoration: 'underline',
},
// Tooltip
'.cm-footnote-tooltip': {
maxWidth: '400px',
padding: '0',
backgroundColor: 'var(--bg-secondary)',
border: '1px solid var(--border-color)',
boxShadow: '0 4px 12px rgba(0, 0, 0, 0.15)',
overflow: 'hidden',
},
'.cm-footnote-tooltip-header': {
padding: '6px 12px',
fontSize: '0.8em',
fontWeight: '600',
fontFamily: 'monospace',
color: 'var(--cm-footnote-color, #1a73e8)',
backgroundColor: 'var(--bg-tertiary, rgba(0, 0, 0, 0.05))',
borderBottom: '1px solid var(--border-color)',
},
'.cm-footnote-tooltip-body': {
padding: '10px 12px',
fontSize: '0.9em',
lineHeight: '1.5',
color: 'var(--text-primary)',
whiteSpace: 'pre-wrap',
wordBreak: 'break-word',
},
// Tooltip animation
'.cm-tooltip:has(.cm-footnote-tooltip)': {
animation: 'cm-footnote-fade-in 0.15s ease-out',
},
'@keyframes cm-footnote-fade-in': {
from: { opacity: '0', transform: 'translateY(4px)' },
to: { opacity: '1', transform: 'translateY(0)' },
},
});
// ============================================================================
// Export
// ============================================================================
/**
* Footnote extension.
*
* Features:
* - Parses footnote references [^id] and definitions [^id]: content
* - Parses inline footnotes ^[content]
* - Renders references and inline footnotes as superscript numbers
* - Shows definition/content on hover
* - Click to navigate between reference and definition
*/
export const footnote = (): Extension => [
footnoteDataField,
footnotePlugin,
footnoteHoverTooltip,
footnoteClickHandler,
baseTheme,
];
export default footnote;

206
frontend/src/views/editor/extensions/markdown/plugins/image.ts
View File

@@ -1,73 +1,177 @@
import { syntaxTree } from '@codemirror/language';
import { Extension, Range } from '@codemirror/state'; import { Extension, Range } from '@codemirror/state';
import { EditorView } from 'codemirror';
import { imagePreview } from '../state/image';
import { image as classes } from '../classes';
import { import {
Decoration,
DecorationSet, DecorationSet,
Decoration,
WidgetType,
EditorView,
ViewPlugin, ViewPlugin,
ViewUpdate ViewUpdate,
hoverTooltip,
Tooltip
} from '@codemirror/view'; } from '@codemirror/view';
import {
iterateTreeInVisibleRanges,
isCursorInRange,
invisibleDecoration
} from '../util';
/** interface ImageInfo {
* Build decorations to hide image markdown syntax. src: string;
* Only hides when cursor is outside the image range. from: number;
*/ to: number;
function hideImageNodes(view: EditorView) { alt: string;
const widgets = new Array<Range<Decoration>>();
iterateTreeInVisibleRanges(view, {
enter(node) {
if (
node.name === 'Image' &&
!isCursorInRange(view.state, [node.from, node.to])
) {
widgets.push(invisibleDecoration.range(node.from, node.to));
}
}
});
return Decoration.set(widgets, true);
} }
/** const IMAGE_EXT_RE = /\.(png|jpe?g|gif|webp|svg|bmp|ico|avif|apng|tiff?)(\?.*)?$/i;
* Plugin to hide image markdown syntax when cursor is outside. const IMAGE_ALT_RE = /(?:!\[)(.*?)(?:\])/;
*/ const ICON = `<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"/><circle cx="8.5" cy="8.5" r="1.5"/><polyline points="21 15 16 10 5 21"/></svg>`;
const hideImageNodePlugin = ViewPlugin.fromClass(
class { function isImageUrl(url: string): boolean {
return IMAGE_EXT_RE.test(url) || url.startsWith('data:image/');
}
function extractImages(view: EditorView): ImageInfo[] {
const result: ImageInfo[] = [];
for (const { from, to } of view.visibleRanges) {
syntaxTree(view.state).iterate({
from,
to,
enter: ({ name, node, from: f, to: t }) => {
if (name !== 'Image') return;
const urlNode = node.getChild('URL');
if (!urlNode) return;
const src = view.state.sliceDoc(urlNode.from, urlNode.to);
if (!isImageUrl(src)) return;
const text = view.state.sliceDoc(f, t);
const alt = text.match(IMAGE_ALT_RE)?.[1] ?? '';
result.push({ src, from: f, to: t, alt });
}
});
}
return result;
}
class IndicatorWidget extends WidgetType {
constructor(readonly info: ImageInfo) {
super();
}
toDOM(): HTMLElement {
const el = document.createElement('span');
el.className = 'cm-image-indicator';
el.innerHTML = ICON;
return el;
}
eq(other: IndicatorWidget): boolean {
return this.info.from === other.info.from && this.info.src === other.info.src;
}
}
class ImagePlugin {
decorations: DecorationSet; decorations: DecorationSet;
images: ImageInfo[] = [];
constructor(view: EditorView) { constructor(view: EditorView) {
this.decorations = hideImageNodes(view); this.images = extractImages(view);
this.decorations = this.build();
} }
update(update: ViewUpdate) { update(update: ViewUpdate) {
if (update.docChanged || update.selectionSet || update.viewportChanged) { if (update.docChanged || update.viewportChanged) {
this.decorations = hideImageNodes(update.view); this.images = extractImages(update.view);
this.decorations = this.build();
} }
} }
private build(): DecorationSet {
const deco: Range<Decoration>[] = [];
for (const img of this.images) {
deco.push(Decoration.widget({ widget: new IndicatorWidget(img), side: 1 }).range(img.to));
}
return Decoration.set(deco, true);
}
getImageAt(pos: number): ImageInfo | null {
for (const img of this.images) {
if (pos >= img.to && pos <= img.to + 1) {
return img;
}
}
return null;
}
}
const imagePlugin = ViewPlugin.fromClass(ImagePlugin, {
decorations: (v) => v.decorations
});
const imageHoverTooltip = hoverTooltip(
(view, pos): Tooltip | null => {
const plugin = view.plugin(imagePlugin);
if (!plugin) return null;
const img = plugin.getImageAt(pos);
if (!img) return null;
return {
pos: img.to,
above: true,
arrow: true,
create: () => {
const dom = document.createElement('div');
dom.className = 'cm-image-tooltip';
const imgEl = document.createElement('img');
imgEl.src = img.src;
imgEl.alt = img.alt;
imgEl.onerror = () => {
imgEl.remove();
dom.textContent = 'Failed to load image';
dom.classList.add('cm-image-tooltip-error');
};
dom.append(imgEl);
return { dom };
}
};
}, },
{ decorations: (v) => v.decorations } { hoverTime: 300 }
); );
/** const theme = EditorView.baseTheme({
* Image plugin. '.cm-image-indicator': {
*/ display: 'inline-flex',
export const image = (): Extension => [ alignItems: 'center',
imagePreview(), marginLeft: '4px',
hideImageNodePlugin, verticalAlign: 'middle',
baseTheme cursor: 'pointer',
]; opacity: '0.5',
color: 'var(--cm-link-color, #1a73e8)',
const baseTheme = EditorView.baseTheme({ transition: 'opacity 0.15s',
['.' + classes.widget]: { '& svg': { width: '14px', height: '14px' }
},
'.cm-image-indicator:hover': { opacity: '1' },
'.cm-image-tooltip': {
background: 'var(--bg-secondary)',
border: '1px solid var(--border-color)',
boxShadow: '0 4px 12px rgba(0, 0, 0, 0.15)',
'& img': {
display: 'block', display: 'block',
objectFit: 'contain', maxWidth: '60vw',
maxWidth: '100%', maxHeight: '50vh'
maxHeight: '100%', }
userSelect: 'none' },
'.cm-image-tooltip-error': {
padding: '16px 24px',
fontSize: '12px',
color: 'var(--text-muted)'
},
'.cm-tooltip-arrow:before': {
borderTopColor: 'var(--border-color) !important',
borderBottomColor: 'var(--border-color) !important'
},
'.cm-tooltip-arrow:after': {
borderTopColor: 'var(--bg-secondary) !important',
borderBottomColor: 'var(--bg-secondary) !important'
} }
}); });
export const image = (): Extension => [imagePlugin, imageHoverTooltip, theme];

3
frontend/src/views/editor/extensions/markdown/plugins/inline-code.ts
View File

@@ -105,8 +105,7 @@ const baseTheme = EditorView.baseTheme({
backgroundColor: 'var(--cm-inline-code-bg)', backgroundColor: 'var(--cm-inline-code-bg)',
borderRadius: '0.25rem', borderRadius: '0.25rem',
padding: '0.1rem 0.3rem', padding: '0.1rem 0.3rem',
fontFamily: 'var(--voidraft-font-mono)', fontFamily: 'var(--voidraft-font-mono)'
fontSize: '0.9em'
} }
}); });

17
frontend/src/views/editor/extensions/markdown/plugins/link.ts
View File

@@ -16,8 +16,10 @@ const AUTO_LINK_MARK_RE = /^<|>$/g;
/** /**
* Parent node types that should not process. * Parent node types that should not process.
* - Image: handled by image plugin
* - LinkReference: reference link definitions like [label]: url should be fully visible
*/ */
const BLACKLISTED_PARENTS = new Set(['Image']); const BLACKLISTED_PARENTS = new Set(['Image', 'LinkReference']);
/** /**
* Links plugin. * Links plugin.
@@ -50,6 +52,19 @@ function buildLinkDecorations(view: EditorView): DecorationSet {
const marks = parent.getChildren('LinkMark'); const marks = parent.getChildren('LinkMark');
const linkTitle = parent.getChild('LinkTitle'); const linkTitle = parent.getChild('LinkTitle');
// Find the ']' mark position to distinguish between link text and link target
// Link structure: [display text](url)
// We should only hide the URL in the () part, not in the [] part
const closeBracketMark = marks.find((mark) => {
const text = view.state.sliceDoc(mark.from, mark.to);
return text === ']';
});
// If URL is before ']', it's part of the display text, don't hide it
if (closeBracketMark && nodeFrom < closeBracketMark.from) {
return;
}
// Check if cursor overlaps with the link // Check if cursor overlaps with the link
const cursorOverlaps = selectionRanges.some((range) => const cursorOverlaps = selectionRanges.some((range) =>
checkRangeOverlap([range.from, range.to], [parent.from, parent.to]) checkRangeOverlap([range.from, range.to], [parent.from, parent.to])

19
frontend/src/views/editor/extensions/markdown/plugins/list.ts
View File

@@ -9,7 +9,6 @@ import {
import { Range, StateField, Transaction } from '@codemirror/state'; import { Range, StateField, Transaction } from '@codemirror/state';
import { syntaxTree } from '@codemirror/language'; import { syntaxTree } from '@codemirror/language';
import { isCursorInRange } from '../util'; import { isCursorInRange } from '../util';
import { list as classes } from '../classes';
/** /**
* Pattern for bullet list markers. * Pattern for bullet list markers.
@@ -43,7 +42,7 @@ class ListBulletWidget extends WidgetType {
toDOM(): HTMLElement { toDOM(): HTMLElement {
const span = document.createElement('span'); const span = document.createElement('span');
span.className = classes.bullet; span.className = 'cm-list-bullet';
span.textContent = '•'; span.textContent = '•';
return span; return span;
} }
@@ -145,7 +144,7 @@ class TaskCheckboxWidget extends WidgetType {
toDOM(view: EditorView): HTMLElement { toDOM(view: EditorView): HTMLElement {
const wrap = document.createElement('span'); const wrap = document.createElement('span');
wrap.setAttribute('aria-hidden', 'true'); wrap.setAttribute('aria-hidden', 'true');
wrap.className = classes.taskCheckbox; wrap.className = 'cm-task-checkbox';
const checkbox = document.createElement('input'); const checkbox = document.createElement('input');
checkbox.type = 'checkbox'; checkbox.type = 'checkbox';
@@ -205,12 +204,9 @@ function buildTaskListDecorations(state: import('@codemirror/state').EditorState
const isChecked = markerText.length >= 2 && 'xX'.includes(markerText[1]); const isChecked = markerText.length >= 2 && 'xX'.includes(markerText[1]);
const checkboxPos = taskMarker.from + 1; // Position of the x or space const checkboxPos = taskMarker.from + 1; // Position of the x or space
// Add checked style to the entire task content
if (isChecked) { if (isChecked) {
decorations.push( decorations.push(
Decoration.mark({ Decoration.mark({ class: 'cm-task-checked' }).range(taskFrom, taskTo)
class: classes.taskChecked
}).range(taskFrom, taskTo)
); );
} }
@@ -255,19 +251,18 @@ const taskListField = StateField.define<DecorationSet>({
* Base theme for lists. * Base theme for lists.
*/ */
const baseTheme = EditorView.baseTheme({ const baseTheme = EditorView.baseTheme({
[`.${classes.bullet}`]: { '.cm-list-bullet': {
// No extra width - just replace the character
color: 'var(--cm-list-bullet-color, inherit)' color: 'var(--cm-list-bullet-color, inherit)'
}, },
[`.${classes.taskChecked}`]: { '.cm-task-checked': {
textDecoration: 'line-through', textDecoration: 'line-through',
opacity: '0.6' opacity: '0.6'
}, },
[`.${classes.taskCheckbox}`]: { '.cm-task-checkbox': {
display: 'inline-block', display: 'inline-block',
verticalAlign: 'baseline' verticalAlign: 'baseline'
}, },
[`.${classes.taskCheckbox} input`]: { '.cm-task-checkbox input': {
cursor: 'pointer', cursor: 'pointer',
margin: '0', margin: '0',
width: '1em', width: '1em',

27
frontend/src/views/editor/extensions/markdown/plugins/subscript-superscript.ts
View File

@@ -16,6 +16,9 @@ import { isCursorInRange, invisibleDecoration } from '../util';
* - Superscript: ^text^ → renders as superscript * - Superscript: ^text^ → renders as superscript
* - Subscript: ~text~ → renders as subscript * - Subscript: ~text~ → renders as subscript
* *
* Note: Inline footnotes ^[content] are handled by the Footnote extension
* which parses InlineFootnote before Superscript in the syntax tree.
*
* Examples: * Examples:
* - 19^th^ → 19ᵗʰ (superscript) * - 19^th^ → 19ᵗʰ (superscript)
* - H~2~O → H₂O (subscript) * - H~2~O → H₂O (subscript)
@@ -37,30 +40,15 @@ function buildDecorations(view: EditorView): DecorationSet {
to, to,
enter: ({ type, from: nodeFrom, to: nodeTo, node }) => { enter: ({ type, from: nodeFrom, to: nodeTo, node }) => {
// Handle Superscript nodes // Handle Superscript nodes
// Note: InlineFootnote ^[content] is parsed before Superscript,
// so we don't need to check for bracket patterns here
if (type.name === 'Superscript') { if (type.name === 'Superscript') {
// Get the full content including marks
const fullContent = view.state.doc.sliceString(nodeFrom, nodeTo);
// Skip if this contains inline footnote pattern ^[
// This catches ^[text] being misinterpreted as superscript
if (fullContent.includes('^[') || fullContent.includes('[') && fullContent.includes(']')) {
return;
}
const cursorInRange = isCursorInRange(view.state, [nodeFrom, nodeTo]); const cursorInRange = isCursorInRange(view.state, [nodeFrom, nodeTo]);
// Get the mark nodes (the ^ characters) // Get the mark nodes (the ^ characters)
const marks = node.getChildren('SuperscriptMark'); const marks = node.getChildren('SuperscriptMark');
if (!cursorInRange && marks.length >= 2) { if (!cursorInRange && marks.length >= 2) {
// Get inner content between marks
const innerContent = view.state.doc.sliceString(marks[0].to, marks[marks.length - 1].from);
// Skip if inner content looks like footnote (starts with [ or contains brackets)
if (innerContent.startsWith('[') || innerContent.includes('[') || innerContent.includes(']')) {
return;
}
// Hide the opening and closing ^ marks // Hide the opening and closing ^ marks
decorations.push(invisibleDecoration.range(marks[0].from, marks[0].to)); decorations.push(invisibleDecoration.range(marks[0].from, marks[0].to));
decorations.push(invisibleDecoration.range(marks[marks.length - 1].from, marks[marks.length - 1].to)); decorations.push(invisibleDecoration.range(marks[marks.length - 1].from, marks[marks.length - 1].to));
@@ -148,16 +136,17 @@ const subscriptSuperscriptPlugin = ViewPlugin.fromClass(
/** /**
* Base theme for subscript and superscript. * Base theme for subscript and superscript.
* Uses mark decoration instead of widget to avoid layout issues. * Uses mark decoration instead of widget to avoid layout issues.
* fontSize uses smaller value as subscript/superscript are naturally smaller.
*/ */
const baseTheme = EditorView.baseTheme({ const baseTheme = EditorView.baseTheme({
'.cm-superscript': { '.cm-superscript': {
verticalAlign: 'super', verticalAlign: 'super',
fontSize: '0.8em', fontSize: '0.75em',
color: 'var(--cm-superscript-color, inherit)' color: 'var(--cm-superscript-color, inherit)'
}, },
'.cm-subscript': { '.cm-subscript': {
verticalAlign: 'sub', verticalAlign: 'sub',
fontSize: '0.8em', fontSize: '0.75em',
color: 'var(--cm-subscript-color, inherit)' color: 'var(--cm-subscript-color, inherit)'
} }
}); });

145
frontend/src/views/editor/extensions/markdown/plugins/table.ts
View File

@@ -1,145 +0,0 @@
import { Extension, Range } from '@codemirror/state';
import {
ViewPlugin,
DecorationSet,
Decoration,
EditorView,
ViewUpdate
} from '@codemirror/view';
import { isCursorInRange } from '../util';
import { extractTablesFromState } from '../state/table';
/**
* Table styling extension for Markdown.
*
* - Adds background styling and hides syntax when cursor is OUTSIDE table
* - Shows raw markdown with NO styling when cursor is INSIDE table (edit mode)
*/
export const table = (): Extension => [tablePlugin, baseTheme];
/** Line decorations - only applied when NOT editing */
const headerLine = Decoration.line({ attributes: { class: 'cm-table-header' } });
const delimiterLine = Decoration.line({ attributes: { class: 'cm-table-delimiter' } });
const dataLine = Decoration.line({ attributes: { class: 'cm-table-data' } });
/** Mark to hide pipe characters */
const pipeHidden = Decoration.mark({ attributes: { class: 'cm-table-pipe-hidden' } });
/** Mark to hide delimiter row content */
const delimiterHidden = Decoration.mark({ attributes: { class: 'cm-table-delimiter-hidden' } });
/** Delimiter row regex */
const DELIMITER_REGEX = /^\s*\|?\s*[-:]+/;
/**
* Build decorations for tables.
* Only adds decorations when cursor is OUTSIDE the table.
*/
function buildDecorations(view: EditorView): DecorationSet {
const decorations: Range<Decoration>[] = [];
const tables = extractTablesFromState(view.state);
for (const table of tables) {
// Skip all decorations if cursor is inside table (edit mode)
if (isCursorInRange(view.state, [table.from, table.to])) {
continue;
}
const startLine = view.state.doc.lineAt(table.from);
const endLine = view.state.doc.lineAt(table.to);
const lines = table.rawText.split('\n');
for (let i = 0; i < lines.length; i++) {
const lineNum = startLine.number + i;
if (lineNum > endLine.number) break;
const line = view.state.doc.line(lineNum);
const text = lines[i];
const isDelimiter = i === 1 && DELIMITER_REGEX.test(text);
// Add line decoration
if (i === 0) {
decorations.push(headerLine.range(line.from));
} else if (isDelimiter) {
decorations.push(delimiterLine.range(line.from));
} else {
decorations.push(dataLine.range(line.from));
}
// Hide syntax elements
if (isDelimiter) {
// Hide entire delimiter content
decorations.push(delimiterHidden.range(line.from, line.to));
} else {
// Hide pipe characters
for (let j = 0; j < text.length; j++) {
if (text[j] === '|') {
decorations.push(pipeHidden.range(line.from + j, line.from + j + 1));
}
}
}
}
}
return Decoration.set(decorations, true);
}
/**
* Table ViewPlugin.
*/
const tablePlugin = ViewPlugin.fromClass(
class {
decorations: DecorationSet;
constructor(view: EditorView) {
this.decorations = buildDecorations(view);
}
update(update: ViewUpdate) {
if (update.docChanged || update.selectionSet || update.viewportChanged) {
this.decorations = buildDecorations(update.view);
}
}
},
{ decorations: v => v.decorations }
);
/**
* Base theme for table styling.
*/
const baseTheme = EditorView.baseTheme({
// Header row
'.cm-table-header': {
backgroundColor: 'var(--cm-table-header-bg, rgba(128, 128, 128, 0.12))',
borderTopLeftRadius: '4px',
borderTopRightRadius: '4px'
},
// Delimiter row
'.cm-table-delimiter': {
backgroundColor: 'var(--cm-table-bg, rgba(128, 128, 128, 0.06))',
lineHeight: '0.5'
},
// Data rows
'.cm-table-data': {
backgroundColor: 'var(--cm-table-bg, rgba(128, 128, 128, 0.06))'
},
'.cm-table-data:last-of-type': {
borderBottomLeftRadius: '4px',
borderBottomRightRadius: '4px'
},
// Hidden pipe characters
'.cm-table-pipe-hidden': {
fontSize: '0',
color: 'transparent'
},
// Hidden delimiter content
'.cm-table-delimiter-hidden': {
fontSize: '0',
color: 'transparent'
}
});

209
frontend/src/views/editor/extensions/markdown/state/image.ts
View File

@@ -1,209 +0,0 @@
import { syntaxTree } from '@codemirror/language';
import { Extension, Range } from '@codemirror/state';
import {
DecorationSet,
Decoration,
WidgetType,
EditorView,
ViewPlugin,
ViewUpdate
} from '@codemirror/view';
import { isCursorInRange } from '../util';
import { image as classes } from '../classes';
/**
* Representation of image data extracted from the syntax tree.
*/
export interface ImageInfo {
/** The source URL of the image. */
src: string;
/** The starting position of the image element in the document. */
from: number;
/** The end position of the image element in the document. */
to: number;
/** The alt text of the image. */
alt: string;
}
/**
* Capture everything in square brackets of a markdown image, after
* the exclamation mark.
*/
const IMAGE_TEXT_RE = /(?:!\[)(.*?)(?:\])/;
/**
* Extract images from the syntax tree.
*/
function extractImages(view: EditorView): ImageInfo[] {
const images: ImageInfo[] = [];
for (const { from, to } of view.visibleRanges) {
syntaxTree(view.state).iterate({
from,
to,
enter: ({ name, node, from: nodeFrom, to: nodeTo }) => {
if (name !== 'Image') return;
const altMatch = view.state.sliceDoc(nodeFrom, nodeTo).match(IMAGE_TEXT_RE);
const alt: string = altMatch?.pop() ?? '';
const urlNode = node.getChild('URL');
if (urlNode) {
const url: string = view.state.sliceDoc(urlNode.from, urlNode.to);
images.push({ src: url, from: nodeFrom, to: nodeTo, alt });
}
}
});
}
return images;
}
/**
* Build image preview decorations.
* Only shows preview when cursor is outside the image syntax.
*/
function buildImageDecorations(view: EditorView, loadedImages: Set<string>): DecorationSet {
const decorations: Range<Decoration>[] = [];
const images = extractImages(view);
for (const img of images) {
const cursorInImage = isCursorInRange(view.state, [img.from, img.to]);
// Only show preview when cursor is outside
if (!cursorInImage) {
const isLoaded = loadedImages.has(img.src);
decorations.push(
Decoration.widget({
widget: new ImagePreviewWidget(img, isLoaded, loadedImages),
side: 1
}).range(img.to)
);
}
}
return Decoration.set(decorations, true);
}
/**
* Image preview widget that displays the actual image.
*/
class ImagePreviewWidget extends WidgetType {
constructor(
private readonly info: ImageInfo,
private readonly isLoaded: boolean,
private readonly loadedImages: Set<string>
) {
super();
}
toDOM(view: EditorView): HTMLElement {
const wrapper = document.createElement('span');
wrapper.className = 'cm-image-preview-wrapper';
const img = new Image();
img.classList.add(classes.widget);
img.src = this.info.src;
img.alt = this.info.alt;
if (!this.isLoaded) {
img.addEventListener('load', () => {
this.loadedImages.add(this.info.src);
view.dispatch({});
});
}
if (this.isLoaded) {
wrapper.appendChild(img);
} else {
const placeholder = document.createElement('span');
placeholder.className = 'cm-image-loading';
placeholder.textContent = '🖼️';
wrapper.appendChild(placeholder);
img.style.display = 'none';
wrapper.appendChild(img);
}
return wrapper;
}
eq(widget: ImagePreviewWidget): boolean {
return (
widget.info.src === this.info.src &&
widget.info.from === this.info.from &&
widget.info.to === this.info.to &&
widget.isLoaded === this.isLoaded
);
}
ignoreEvent(): boolean {
return false;
}
}
/**
* Image preview plugin class.
*/
class ImagePreviewPlugin {
decorations: DecorationSet;
private loadedImages: Set<string> = new Set();
private lastSelectionRanges: string = '';
constructor(view: EditorView) {
this.decorations = buildImageDecorations(view, this.loadedImages);
this.lastSelectionRanges = this.serializeSelection(view);
}
update(update: ViewUpdate) {
if (update.docChanged || update.viewportChanged) {
this.decorations = buildImageDecorations(update.view, this.loadedImages);
this.lastSelectionRanges = this.serializeSelection(update.view);
return;
}
if (update.selectionSet) {
const newRanges = this.serializeSelection(update.view);
if (newRanges !== this.lastSelectionRanges) {
this.decorations = buildImageDecorations(update.view, this.loadedImages);
this.lastSelectionRanges = newRanges;
}
return;
}
if (!update.docChanged && !update.selectionSet && !update.viewportChanged) {
this.decorations = buildImageDecorations(update.view, this.loadedImages);
}
}
private serializeSelection(view: EditorView): string {
return view.state.selection.ranges
.map((r) => `${r.from}:${r.to}`)
.join(',');
}
}
/**
* Image preview extension.
* Only handles displaying image preview widget.
*/
export const imagePreview = (): Extension => [
ViewPlugin.fromClass(ImagePreviewPlugin, {
decorations: (v) => v.decorations
}),
baseTheme
];
const baseTheme = EditorView.baseTheme({
'.cm-image-preview-wrapper': {
display: 'block',
margin: '0.5rem 0'
},
[`.${classes.widget}`]: {
maxWidth: '100%',
height: 'auto',
borderRadius: '0.25rem'
},
'.cm-image-loading': {
display: 'inline-block',
color: 'var(--cm-foreground)',
opacity: '0.6'
}
});

286
frontend/src/views/editor/extensions/markdown/syntax/footnote.ts Normal file
View File

@@ -0,0 +1,286 @@
/**
* Footnote extension for Lezer Markdown parser.
*
* Parses footnote syntax compatible with MultiMarkdown/PHP Markdown Extra.
*
* Syntax:
* - Footnote reference: [^id] or [^1]
* - Footnote definition: [^id]: content (at line start)
* - Inline footnote: ^[content] (content is inline, no separate definition needed)
*
* Examples:
* - This is text[^1] with a footnote.
* - [^1]: This is the footnote content.
* - This is text^[inline footnote content] with inline footnote.
*/
import { MarkdownConfig, Line, BlockContext } from '@lezer/markdown';
/**
* ASCII character codes for parsing.
*/
const enum Ch {
OpenBracket = 91, // [
CloseBracket = 93, // ]
Caret = 94, // ^
Colon = 58, // :
Space = 32,
Tab = 9,
Newline = 10,
}
/**
* Check if a character is valid for footnote ID.
* Allows: letters, numbers, underscore, hyphen
*/
function isFootnoteIdChar(code: number): boolean {
return (
(code >= 48 && code <= 57) || // 0-9
(code >= 65 && code <= 90) || // A-Z
(code >= 97 && code <= 122) || // a-z
code === 95 || // _
code === 45 // -
);
}
/**
* Footnote extension for Lezer Markdown.
*
* Defines nodes:
* - FootnoteReference: Inline reference [^id]
* - FootnoteReferenceMark: The [^ and ] delimiters
* - FootnoteReferenceLabel: The id part
* - FootnoteDefinition: Block definition [^id]: content
* - FootnoteDefinitionMark: The [^, ]: delimiters
* - FootnoteDefinitionLabel: The id part in definition
* - FootnoteDefinitionContent: The content part
* - InlineFootnote: Inline footnote ^[content]
* - InlineFootnoteMark: The ^[ and ] delimiters
* - InlineFootnoteContent: The content part
*/
export const Footnote: MarkdownConfig = {
defineNodes: [
// Inline reference nodes
{ name: 'FootnoteReference' },
{ name: 'FootnoteReferenceMark' },
{ name: 'FootnoteReferenceLabel' },
// Block definition nodes
{ name: 'FootnoteDefinition', block: true },
{ name: 'FootnoteDefinitionMark' },
{ name: 'FootnoteDefinitionLabel' },
{ name: 'FootnoteDefinitionContent' },
// Inline footnote nodes
{ name: 'InlineFootnote' },
{ name: 'InlineFootnoteMark' },
{ name: 'InlineFootnoteContent' },
],
parseInline: [
// Inline footnote must be parsed before Superscript to handle ^[ pattern
{
name: 'InlineFootnote',
parse(cx, next, pos) {
// Check for ^[ pattern
if (next !== Ch.Caret || cx.char(pos + 1) !== Ch.OpenBracket) {
return -1;
}
// Find the closing ]
// Content can contain any characters except unbalanced brackets and newlines
let end = pos + 2;
let bracketDepth = 1; // We're inside one [
let hasContent = false;
while (end < cx.end) {
const char = cx.char(end);
// Don't allow newlines in inline footnotes
if (char === Ch.Newline) {
return -1;
}
// Track bracket depth for nested brackets
if (char === Ch.OpenBracket) {
bracketDepth++;
} else if (char === Ch.CloseBracket) {
bracketDepth--;
if (bracketDepth === 0) {
// Found the closing bracket
if (!hasContent) {
return -1; // Empty inline footnote
}
// Create the element with marks and content
const children = [
// Opening mark ^[
cx.elt('InlineFootnoteMark', pos, pos + 2),
// Content
cx.elt('InlineFootnoteContent', pos + 2, end),
// Closing mark ]
cx.elt('InlineFootnoteMark', end, end + 1),
];
const element = cx.elt('InlineFootnote', pos, end + 1, children);
return cx.addElement(element);
}
} else {
hasContent = true;
}
end++;
}
return -1;
},
// Parse before Superscript to avoid ^[ being misinterpreted
before: 'Superscript',
},
{
name: 'FootnoteReference',
parse(cx, next, pos) {
// Check for [^ pattern
if (next !== Ch.OpenBracket || cx.char(pos + 1) !== Ch.Caret) {
return -1;
}
// Find the closing ]
let end = pos + 2;
let hasValidId = false;
while (end < cx.end) {
const char = cx.char(end);
// Found closing bracket
if (char === Ch.CloseBracket) {
if (!hasValidId) {
return -1; // Empty footnote reference
}
// Create the element with marks and label
const children = [
// Opening mark [^
cx.elt('FootnoteReferenceMark', pos, pos + 2),
// Label (the id)
cx.elt('FootnoteReferenceLabel', pos + 2, end),
// Closing mark ]
cx.elt('FootnoteReferenceMark', end, end + 1),
];
const element = cx.elt('FootnoteReference', pos, end + 1, children);
return cx.addElement(element);
}
// Don't allow newlines
if (char === Ch.Newline) {
return -1;
}
// Validate id characters
if (isFootnoteIdChar(char)) {
hasValidId = true;
} else {
// Invalid character in footnote id
return -1;
}
end++;
}
return -1;
},
// Parse before links to avoid conflicts
before: 'Link',
},
],
parseBlock: [
{
name: 'FootnoteDefinition',
parse(cx: BlockContext, line: Line): boolean {
// Must start at the beginning of a line
// Check for [^ pattern
const text = line.text;
if (text.charCodeAt(0) !== Ch.OpenBracket ||
text.charCodeAt(1) !== Ch.Caret) {
return false;
}
// Find ]: pattern
let labelEnd = 2;
while (labelEnd < text.length) {
const char = text.charCodeAt(labelEnd);
if (char === Ch.CloseBracket) {
// Check for : after ]
if (labelEnd + 1 < text.length &&
text.charCodeAt(labelEnd + 1) === Ch.Colon) {
break;
}
return false;
}
if (!isFootnoteIdChar(char)) {
return false;
}
labelEnd++;
}
// Must have found ]:
if (labelEnd >= text.length ||
text.charCodeAt(labelEnd) !== Ch.CloseBracket ||
text.charCodeAt(labelEnd + 1) !== Ch.Colon) {
return false;
}
// Calculate positions
const start = cx.lineStart;
const openMarkEnd = start + 2; // [^
const labelStart = openMarkEnd;
const labelEndPos = start + labelEnd;
const closeMarkStart = labelEndPos;
const closeMarkEnd = start + labelEnd + 2; // ]:
const contentStart = closeMarkEnd;
// Skip optional space after :
let contentOffset = labelEnd + 2;
if (contentOffset < text.length &&
(text.charCodeAt(contentOffset) === Ch.Space ||
text.charCodeAt(contentOffset) === Ch.Tab)) {
contentOffset++;
}
// Build the element
const children = [
// Opening mark [^
cx.elt('FootnoteDefinitionMark', start, openMarkEnd),
// Label
cx.elt('FootnoteDefinitionLabel', labelStart, labelEndPos),
// Closing mark ]:
cx.elt('FootnoteDefinitionMark', closeMarkStart, closeMarkEnd),
];
// Add content if present
const contentText = text.slice(contentOffset);
if (contentText.length > 0) {
children.push(
cx.elt('FootnoteDefinitionContent', start + contentOffset, start + text.length)
);
}
// Create the block element
const element = cx.elt('FootnoteDefinition', start, start + text.length, children);
cx.addElement(element);
// Move to next line
cx.nextLine();
return true;
},
// Parse before other block elements
before: 'LinkReference',
},
],
};
export default Footnote;