Add themes support
Usage:
const editor = new RibbitEditor({
themes: [
{ name: 'dark', features: { sourceMode: false } },
{ name: 'minimal', tags: minimalTags },
],
currentTheme: 'dark',
});
The built-in theme is 'ribbit-default' and is always available.
Additional themes from the themes array are registered on top.
This commit is contained in:
gsb
@@ -0,0 +1,16 @@
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/*
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* default-theme.ts — the default ribbit theme.
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*
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* Enables all default tags and all editor features.
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*/
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import type { RibbitTheme } from './types';
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import { defaultTags } from './tags';
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export const defaultTheme: RibbitTheme = {
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name: 'ribbit-default',
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tags: defaultTags,
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features: {
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sourceMode: true,
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},
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};
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@@ -0,0 +1,292 @@
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/*
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* hopdown.ts — configurable markdown↔HTML converter.
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*
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* Usage:
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* const converter = new HopDown();
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* const converter = new HopDown({ exclude: ['table'] });
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* const converter = new HopDown({ tags: { ...defaultTags, 'DEL,S,STRIKE': strikethrough } });
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*
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* converter.toHTML('**bold**');
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* converter.toMarkdown('<strong>bold</strong>');
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*/
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import type { Converter, MatchContext, Tag } from './types';
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import { defaultBlockTags, defaultInlineTags, defaultTags, escapeHtml, parseListBlock } from './tags';
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export type TagMap = Record<string, Tag>;
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export interface HopDownOptions {
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tags?: TagMap;
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exclude?: string[];
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}
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/**
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* A configurable markdown↔HTML converter.
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*
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* By default includes all standard tags. Pass options to customize:
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* - tags: a mapping of HTML selectors to Tag definitions
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* - exclude: remove specific tags by name from the defaults
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*/
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export class HopDown {
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private blockTags: Tag[];
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private inlineTags: Tag[];
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private tags: Map<string, Tag>;
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constructor(options: HopDownOptions = {}) {
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let tagMap: TagMap;
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if (options.tags) {
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tagMap = options.tags;
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} else if (options.exclude) {
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const excluded = new Set(options.exclude);
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tagMap = Object.fromEntries(
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Object.entries(defaultTags).filter(([, tag]) => !excluded.has(tag.name))
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);
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} else {
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tagMap = defaultTags;
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}
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const allTags = Object.values(tagMap);
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const defaultBlockNames = new Set(Object.values(defaultBlockTags).map(t => t.name));
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const defaultInlineNames = new Set(Object.values(defaultInlineTags).map(t => t.name));
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this.blockTags = allTags.filter(tag =>
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defaultBlockNames.has(tag.name) ||
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(!defaultInlineNames.has(tag.name) && !(tag as any).pattern)
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);
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this.inlineTags = allTags.filter(tag =>
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defaultInlineNames.has(tag.name) || (tag as any).pattern
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);
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this.tags = new Map();
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for (const [selector, tag] of Object.entries(tagMap)) {
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for (const sel of selector.split(',').map(s => s.trim()).filter(Boolean)) {
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if (sel.startsWith('_')) {
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continue;
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}
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const existing = this.tags.get(sel);
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if (existing && existing !== tag) {
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throw new Error(
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`HTML tag "${sel}" is claimed by both "${existing.name}" and "${tag.name}". ` +
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`Use the exclude option to remove one before adding the other.`
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);
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}
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this.tags.set(sel, tag);
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}
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}
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this.validateInlineTags();
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}
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/**
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* Verify that no two inline tags have colliding delimiters without
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* correct precedence ordering. If delimiter A is a prefix of delimiter B,
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* B must have lower (earlier) precedence so the longer match wins.
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*/
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private validateInlineTags(): void {
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const withDelimiters = this.inlineTags
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.filter(tag => (tag as any).delimiter)
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.map(tag => ({
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name: tag.name,
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delimiter: (tag as any).delimiter as string,
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precedence: (tag as any).precedence as number ?? 50,
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}));
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for (let i = 0; i < withDelimiters.length; i++) {
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for (let j = i + 1; j < withDelimiters.length; j++) {
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const a = withDelimiters[i];
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const b = withDelimiters[j];
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const aPrefix = b.delimiter.startsWith(a.delimiter);
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const bPrefix = a.delimiter.startsWith(b.delimiter);
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if (!aPrefix && !bPrefix) {
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continue;
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}
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const longer = a.delimiter.length > b.delimiter.length ? a : b;
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const shorter = a.delimiter.length > b.delimiter.length ? b : a;
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if (longer.precedence >= shorter.precedence) {
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throw new Error(
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`Inline tag "${longer.name}" (delimiter "${longer.delimiter}") must have ` +
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`lower precedence than "${shorter.name}" (delimiter "${shorter.delimiter}") ` +
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`because its delimiter is a prefix match. ` +
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`Got ${longer.name}=${longer.precedence}, ${shorter.name}=${shorter.precedence}.`
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);
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}
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}
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}
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}
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/**
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* Convert a markdown string to HTML.
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*/
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toHTML(md: string): string {
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return this.processBlocks(md);
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}
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/**
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* Convert an HTML string back to markdown.
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*/
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toMarkdown(html: string): string {
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const container = document.createElement('div');
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container.innerHTML = html;
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return this.nodeToMd(container).replace(/\n{3,}/g, '\n\n').trim();
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}
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private processBlocks(md: string): string {
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const lines = md.replace(/\r\n/g, '\n').split('\n');
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const output: string[] = [];
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let index = 0;
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while (index < lines.length) {
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if (/^\s*$/.test(lines[index])) {
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index++;
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continue;
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}
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let matched = false;
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for (const tag of this.blockTags) {
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const context: MatchContext = {
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lines,
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index,
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text: '',
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offset: 0,
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};
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const token = tag.match(context);
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if (!token) continue;
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if (tag.name === 'list') {
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const result = parseListBlock(lines, index, 0, (source) => this.processInline(source));
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output.push(result.html);
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index = result.end;
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} else {
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output.push(tag.toHTML(token, this.makeConverter()));
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index += token.consumed;
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}
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matched = true;
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break;
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}
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if (!matched) {
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index++;
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}
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}
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return output.join('\n');
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}
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private processInline(source: string): string {
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const sorted = [...this.inlineTags].sort((a, b) =>
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((a as any).precedence ?? 50) - ((b as any).precedence ?? 50)
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);
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const placeholders: string[] = [];
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let text = source;
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// Pass 1: extract links and non-recursive tags into placeholders before escaping
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for (const tag of sorted) {
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const recursive = (tag as any).recursive ?? true;
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if (tag.name === 'link') {
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text = text.replace(/\[([^\]]+)\]\(([^)]+)\)/g, (_, linkText: string, href: string) => {
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// Process link text: restore earlier placeholders, then run inline on any remaining markdown
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let inner = linkText;
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// Check if link text contains placeholders (already-processed content)
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const hasPlaceholders = /\x00P\d+\x00/.test(inner);
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if (hasPlaceholders) {
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inner = inner.replace(/\x00P(\d+)\x00/g, (__, idx: string) => placeholders[parseInt(idx)]);
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} else {
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inner = this.processInline(inner);
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}
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placeholders.push('<a href="' + escapeHtml(href) + '">' + inner + '</a>');
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return '\x00P' + (placeholders.length - 1) + '\x00';
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});
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} else if (!recursive && (tag as any).pattern) {
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const globalPattern = (tag as any).pattern as RegExp;
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globalPattern.lastIndex = 0;
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text = text.replace(globalPattern, (_, content: string) => {
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placeholders.push(tag.toHTML(
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{ content, raw: '', consumed: 0 },
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this.makeConverter(),
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));
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return '\x00P' + (placeholders.length - 1) + '\x00';
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});
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}
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}
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text = escapeHtml(text);
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// Pass 2: apply recursive tags in precedence order (longest delimiter first).
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// Content matched here is already HTML-escaped and has had earlier
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// passes applied, so we wrap directly without re-processing.
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for (const tag of sorted) {
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const recursive = (tag as any).recursive ?? true;
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if (tag.name === 'link' || !recursive) {
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continue;
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}
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const globalPattern = (tag as any).pattern as RegExp | undefined;
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if (globalPattern) {
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globalPattern.lastIndex = 0;
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text = text.replace(globalPattern, (_, content: string) => {
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// Restore any placeholders in the captured content
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const restored = content.replace(/\x00P(\d+)\x00/g, (__, idx: string) => placeholders[parseInt(idx)]);
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const htmlTag = (tag as any).name === 'boldItalic'
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? null
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: ((tag.selector as string) || '').split(',')[0].toLowerCase();
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if (tag.name === 'boldItalic') {
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return '<em><strong>' + restored + '</strong></em>';
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}
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return `<${htmlTag}>${restored}</${htmlTag}>`;
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});
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}
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}
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// Restore placeholders
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text = text.replace(/\x00P(\d+)\x00/g, (_, index: string) => placeholders[parseInt(index)]);
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return text;
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}
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private nodeToMd(node: Node): string {
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if (node.nodeType === 3) {
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return node.textContent || '';
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}
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if (node.nodeType !== 1) {
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return '';
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}
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const element = node as HTMLElement;
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const tag = this.tags.get(element.nodeName);
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if (tag) {
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return tag.toMarkdown(element, this.makeConverter());
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}
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return this.childrenToMd(node);
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}
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private childrenToMd(node: Node): string {
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return Array.from(node.childNodes).map(child => this.nodeToMd(child)).join('');
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}
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private makeConverter(): Converter {
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return {
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inline: (source) => this.processInline(source),
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block: (md) => this.processBlocks(md),
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children: (node) => this.childrenToMd(node),
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node: (node) => this.nodeToMd(node),
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};
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}
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}
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/**
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* A default HopDown instance with all standard tags enabled.
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* Use this for simple cases where no configuration is needed.
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*/
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const hopdown = new HopDown();
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export function toHTML(md: string): string {
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return hopdown.toHTML(md);
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}
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export function toMarkdown(html: string): string {
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return hopdown.toMarkdown(html);
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}
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export default hopdown;
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@@ -0,0 +1,117 @@
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/*
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* ribbit-editor.ts — WYSIWYG editing extension for Ribbit.
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*/
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import { HopDown } from './hopdown';
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import { defaultTags, defaultBlockTags, defaultInlineTags, inlineTag } from './tags';
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import { defaultTheme } from './default-theme';
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import { Ribbit, RibbitPlugin, RibbitSettings, camelCase, decodeHtmlEntities, encodeHtmlEntities } from './ribbit';
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/**
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* WYSIWYG markdown editor with VIEW, EDIT, and WYSIWYG modes.
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*
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* Extends Ribbit with contentEditable support and bidirectional
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* markdown↔HTML conversion on mode switches.
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*
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* Usage:
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* const editor = new RibbitEditor({ editorId: 'my-element' });
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* editor.run();
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* editor.wysiwyg(); // switch to WYSIWYG mode
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* editor.edit(); // switch to source editing mode
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* editor.view(); // switch to read-only view
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*/
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export class RibbitEditor extends Ribbit {
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run(): void {
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this.states = {
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VIEW: 'view',
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EDIT: 'edit',
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WYSIWYG: 'wysiwyg'
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};
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this.#bindEvents();
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this.plugins().forEach(plugin => {
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plugin.setEditable();
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});
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this.element.classList.add('loaded');
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this.view();
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}
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#bindEvents(): void {
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this.element.addEventListener('input', () => {
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if (this.state !== this.states.VIEW) {
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this.changed = true;
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}
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});
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}
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htmlToMarkdown(html?: string): string {
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return this.converter.toMarkdown(html || this.element.innerHTML);
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}
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getMarkdown(): string {
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if (this.getState() === this.states.EDIT) {
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let html = this.element.innerHTML;
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html = html.replace(/<(?:div|br)>/ig, '');
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html = html.replace(/<\/div>/ig, '\n');
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this.cachedMarkdown = decodeHtmlEntities(html);
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} else if (this.getState() === this.states.WYSIWYG) {
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this.cachedMarkdown = this.htmlToMarkdown(this.element.innerHTML);
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}
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if (!this.cachedMarkdown) {
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this.cachedMarkdown = this.element.textContent || '';
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}
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return this.cachedMarkdown;
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}
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wysiwyg(): void {
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if (this.getState() === this.states.WYSIWYG) return;
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this.changed = false;
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this.element.contentEditable = 'true';
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this.element.innerHTML = this.getHTML();
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Array.from(this.element.querySelectorAll('.macro')).forEach(el => {
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const macroEl = el as HTMLElement;
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if (macroEl.dataset.editable === 'false') {
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macroEl.contentEditable = 'false';
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macroEl.style.opacity = '0.5';
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}
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});
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this.setState(this.states.WYSIWYG);
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}
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edit(): void {
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if (!this.theme.features?.sourceMode) {
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return;
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}
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if (this.state === this.states.EDIT) return;
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this.changed = false;
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this.element.contentEditable = 'true';
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this.element.innerHTML = encodeHtmlEntities(this.getMarkdown());
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this.setState(this.states.EDIT);
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}
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insertAtCursor(node: Node): void {
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const sel = window.getSelection()!;
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const range = sel.getRangeAt(0);
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range.deleteContents();
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range.insertNode(node);
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range.setStartAfter(node);
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this.element.focus();
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sel.removeAllRanges();
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sel.addRange(range);
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}
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}
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// Attach public API to window for <script> tag usage.
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(window as any).HopDown = HopDown;
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(window as any).inlineTag = inlineTag;
|
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(window as any).defaultTags = defaultTags;
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(window as any).defaultBlockTags = defaultBlockTags;
|
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(window as any).defaultInlineTags = defaultInlineTags;
|
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(window as any).defaultTheme = defaultTheme;
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(window as any).Ribbit = Ribbit;
|
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(window as any).RibbitEditor = RibbitEditor;
|
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(window as any).RibbitPlugin = RibbitPlugin;
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(window as any).camelCase = camelCase;
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(window as any).decodeHtmlEntities = decodeHtmlEntities;
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(window as any).encodeHtmlEntities = encodeHtmlEntities;
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@@ -0,0 +1,186 @@
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/*
|
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* ribbit.ts — core editor classes for the ribbit WYSIWYG markdown editor.
|
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*/
|
||||
|
||||
import { HopDown } from './hopdown';
|
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import { defaultTheme } from './default-theme';
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import { ThemeManager } from './theme-manager';
|
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import type { RibbitTheme } from './types';
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|
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export interface RibbitSettings {
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api?: unknown;
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editorId?: string;
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plugins?: Array<{ new(settings: { name: string; wiki: Ribbit }): RibbitPlugin; name: string }>;
|
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currentTheme?: string;
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themes?: RibbitTheme[];
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themesPath?: string;
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||||
}
|
||||
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||||
/**
|
||||
* Base class for editor plugins. Subclass and override toHTML/toMarkdown
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||||
* to add custom processing hooks.
|
||||
*/
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||||
export class RibbitPlugin {
|
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name: string;
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wiki: Ribbit;
|
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precedence: number;
|
||||
|
||||
constructor(settings: { name: string; wiki: Ribbit }) {
|
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this.name = settings.name;
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this.wiki = settings.wiki;
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this.precedence = 50;
|
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}
|
||||
|
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setEditable(): void {
|
||||
}
|
||||
|
||||
toMarkdown(html: string): string {
|
||||
return html;
|
||||
}
|
||||
|
||||
toHTML(md: string): string {
|
||||
return md;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Read-only markdown viewer. Renders markdown content into an HTML element.
|
||||
*
|
||||
* Usage:
|
||||
* const viewer = new Ribbit({ editorId: 'my-element' });
|
||||
* viewer.run();
|
||||
*/
|
||||
export class Ribbit {
|
||||
api: unknown;
|
||||
element: HTMLElement;
|
||||
states: Record<string, string>;
|
||||
cachedHTML: string | null;
|
||||
cachedMarkdown: string | null;
|
||||
state: string | null;
|
||||
changed: boolean;
|
||||
enabledPlugins: Record<string, RibbitPlugin>;
|
||||
theme: RibbitTheme;
|
||||
themes: ThemeManager;
|
||||
converter: HopDown;
|
||||
themesPath: string;
|
||||
|
||||
constructor(settings: RibbitSettings) {
|
||||
this.api = settings.api || null;
|
||||
this.element = document.getElementById(settings.editorId || 'ribbit')!;
|
||||
this.themesPath = settings.themesPath || './themes';
|
||||
this.states = {
|
||||
VIEW: 'view',
|
||||
};
|
||||
this.cachedHTML = null;
|
||||
this.cachedMarkdown = null;
|
||||
this.state = null;
|
||||
this.changed = false;
|
||||
this.enabledPlugins = {};
|
||||
|
||||
this.themes = new ThemeManager(defaultTheme, this.themesPath, (theme) => {
|
||||
this.theme = theme;
|
||||
this.converter = theme.tags
|
||||
? new HopDown({ tags: theme.tags })
|
||||
: new HopDown();
|
||||
this.cachedHTML = null;
|
||||
if (this.getState() === this.states.VIEW) {
|
||||
this.state = null;
|
||||
this.view();
|
||||
}
|
||||
});
|
||||
|
||||
(settings.themes || []).forEach(theme => {
|
||||
this.themes.add(theme);
|
||||
});
|
||||
|
||||
const activeName = settings.currentTheme || defaultTheme.name;
|
||||
this.themes.set(activeName);
|
||||
this.theme = this.themes.current();
|
||||
this.converter = this.theme.tags
|
||||
? new HopDown({ tags: this.theme.tags })
|
||||
: new HopDown();
|
||||
|
||||
(settings.plugins || []).forEach(plugin => {
|
||||
this.enabledPlugins[plugin.name] = new plugin({
|
||||
name: plugin.name,
|
||||
wiki: this,
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
run(): void {
|
||||
this.element.classList.add('loaded');
|
||||
this.view();
|
||||
}
|
||||
|
||||
plugins(): RibbitPlugin[] {
|
||||
return Object.values(this.enabledPlugins).sort((a, b) => a.precedence - b.precedence);
|
||||
}
|
||||
|
||||
getState(): string | null {
|
||||
return this.state;
|
||||
}
|
||||
|
||||
setState(newState: string): void {
|
||||
this.state = newState;
|
||||
Object.values(this.states).forEach(state => {
|
||||
if (state === newState) {
|
||||
this.element.classList.add(state);
|
||||
} else {
|
||||
this.element.classList.remove(state);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
markdownToHTML(md: string): string {
|
||||
return this.converter.toHTML(md);
|
||||
}
|
||||
|
||||
getHTML(): string {
|
||||
if (this.changed || !this.cachedHTML) {
|
||||
this.cachedHTML = this.markdownToHTML(this.getMarkdown());
|
||||
}
|
||||
return this.cachedHTML;
|
||||
}
|
||||
|
||||
getMarkdown(): string {
|
||||
if (!this.cachedMarkdown) {
|
||||
this.cachedMarkdown = this.element.textContent || '';
|
||||
}
|
||||
return this.cachedMarkdown;
|
||||
}
|
||||
|
||||
view(): void {
|
||||
if (this.getState() === this.states.VIEW) return;
|
||||
this.element.innerHTML = this.getHTML();
|
||||
this.setState(this.states.VIEW);
|
||||
this.element.contentEditable = 'false';
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a string to title case, splitting on whitespace.
|
||||
* Returns an array of capitalized words.
|
||||
*/
|
||||
export function camelCase(words: string): string[] {
|
||||
return words.trim().split(/\s+/g).map(word => {
|
||||
const lc = word.toLowerCase();
|
||||
return lc.charAt(0).toUpperCase() + lc.slice(1);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Decode HTML entities in a string using a textarea element.
|
||||
*/
|
||||
export function decodeHtmlEntities(html: string): string {
|
||||
const txt = document.createElement('textarea');
|
||||
txt.innerHTML = html;
|
||||
return txt.value;
|
||||
}
|
||||
|
||||
/**
|
||||
* Encode HTML-significant characters as numeric entities.
|
||||
*/
|
||||
export function encodeHtmlEntities(str: string): string {
|
||||
return str.replace(/[\u00A0-\u9999<>&]/g, i => '&#' + i.charCodeAt(0) + ';');
|
||||
}
|
||||
+479
@@ -0,0 +1,479 @@
|
||||
/*
|
||||
* tags.ts — tag definitions for the hopdown converter.
|
||||
*
|
||||
* Each Tag is a self-contained definition of a markdown element,
|
||||
* with rules for matching, converting to HTML, and converting back.
|
||||
*/
|
||||
|
||||
import type { Tag, MatchContext, SourceToken, Converter, ListItem, ListResult, InlineTagDef } from './types';
|
||||
|
||||
/**
|
||||
* Create a Tag from a shorthand inline definition.
|
||||
*
|
||||
* Most inline markdown elements follow the same pattern: a delimiter wraps
|
||||
* content, it maps to an HTML element, and the reverse is just unwrapping.
|
||||
* This factory builds a full Tag from that pattern.
|
||||
*
|
||||
* Usage:
|
||||
* inlineTag({ name: 'bold', delimiter: '**', htmlTag: 'strong', aliases: 'B' })
|
||||
* inlineTag({ name: 'code', delimiter: '`', htmlTag: 'code', recursive: false, precedence: 10 })
|
||||
* inlineTag({ name: 'strikethrough', delimiter: '~~', htmlTag: 'del', aliases: 'S,STRIKE' })
|
||||
*/
|
||||
export function inlineTag(def: InlineTagDef): Tag & { precedence: number; recursive: boolean; pattern: RegExp; delimiter: string } {
|
||||
const escaped = def.delimiter.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
|
||||
const matchPattern = new RegExp('^' + escaped + '(.+?)' + escaped);
|
||||
const globalPattern = new RegExp(escaped + '(.+?)' + escaped, 'g');
|
||||
const upperTag = def.htmlTag.toUpperCase();
|
||||
const selector = [upperTag, ...(def.aliases || '').split(',').filter(Boolean)].join(',');
|
||||
const recursive = def.recursive !== false;
|
||||
|
||||
return {
|
||||
name: def.name,
|
||||
precedence: def.precedence ?? 50,
|
||||
recursive,
|
||||
pattern: globalPattern,
|
||||
delimiter: def.delimiter,
|
||||
match: (context) => {
|
||||
const matched = context.text.slice(context.offset).match(matchPattern);
|
||||
if (!matched) {
|
||||
return null;
|
||||
}
|
||||
return {
|
||||
content: matched[1],
|
||||
raw: matched[0],
|
||||
consumed: matched[0].length,
|
||||
};
|
||||
},
|
||||
toHTML: (token, convert) => {
|
||||
const inner = recursive ? convert.inline(token.content) : escapeHtml(token.content);
|
||||
return `<${def.htmlTag}>${inner}</${def.htmlTag}>`;
|
||||
},
|
||||
selector,
|
||||
toMarkdown: (element, convert) => {
|
||||
if (!recursive && element.parentNode?.nodeName === 'PRE') {
|
||||
return convert.children(element);
|
||||
}
|
||||
return def.delimiter + convert.children(element) + def.delimiter;
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Escape HTML special characters in a string.
|
||||
*/
|
||||
export function escapeHtml(source: string): string {
|
||||
return source.replace(/&/g, '&').replace(/</g, '<')
|
||||
.replace(/>/g, '>').replace(/"/g, '"');
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a camelCase ID from heading text, for use as an anchor.
|
||||
*/
|
||||
export function camelId(text: string): string {
|
||||
return text.trim().split(/\s+/).map(word =>
|
||||
word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
|
||||
).join('');
|
||||
}
|
||||
|
||||
/**
|
||||
* Recursively parse a markdown list into HTML, handling nested sublists
|
||||
* at arbitrary depth and mixed list types (ul/ol).
|
||||
*/
|
||||
export function parseListBlock(lines: string[], start: number, indent: number, inlineConvert: (s: string) => string): ListResult {
|
||||
const prefix = new RegExp('^' + ' '.repeat(indent) + '([\\*\\-]|\\d+\\.)\\s');
|
||||
const isOl = /^\d+\./.test(lines[start].trim());
|
||||
const tag = isOl ? 'ol' : 'ul';
|
||||
const items: ListItem[] = [];
|
||||
let i = start;
|
||||
|
||||
while (i < lines.length) {
|
||||
const line = lines[i];
|
||||
if (/^\s*$/.test(line)) break;
|
||||
const lineIndent = line.match(/^(\s*)/)![1].length;
|
||||
if (lineIndent < indent) break;
|
||||
if (lineIndent > indent) {
|
||||
const sub = parseListBlock(lines, i, lineIndent, inlineConvert);
|
||||
items[items.length - 1].sub = sub.html;
|
||||
i = sub.end;
|
||||
continue;
|
||||
}
|
||||
if (!prefix.test(line)) break;
|
||||
items.push({
|
||||
text: line.replace(prefix, ''),
|
||||
sub: '',
|
||||
});
|
||||
i++;
|
||||
}
|
||||
|
||||
const html = '<' + tag + '>' + items.map(item =>
|
||||
'<li>' + inlineConvert(item.text) + item.sub + '</li>'
|
||||
).join('') + '</' + tag + '>';
|
||||
return { html, end: i };
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert an HTML list element back to markdown, recursing into
|
||||
* nested sublists with 2-space indentation per depth level.
|
||||
*/
|
||||
export function listToMd(node: HTMLElement, depth: number, convert: Converter): string {
|
||||
const isOl = node.nodeName === 'OL';
|
||||
const indent = ' '.repeat(depth);
|
||||
const lines: string[] = [];
|
||||
Array.from(node.children).forEach((listItem, index) => {
|
||||
const marker = isOl ? (index + 1) + '. ' : '- ';
|
||||
let text = '';
|
||||
let sublist = '';
|
||||
Array.from(listItem.childNodes).forEach(child => {
|
||||
if (child.nodeType === 1 && (child.nodeName === 'UL' || child.nodeName === 'OL')) {
|
||||
sublist += listToMd(child as HTMLElement, depth + 1, convert);
|
||||
} else {
|
||||
text += convert.node(child);
|
||||
}
|
||||
});
|
||||
lines.push(indent + marker + text.trim());
|
||||
if (sublist) lines.push(sublist);
|
||||
});
|
||||
const result = lines.join('\n');
|
||||
return depth === 0 ? '\n\n' + result + '\n\n' : result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Test whether a line begins a block-level element (used to detect
|
||||
* paragraph boundaries).
|
||||
*/
|
||||
export function isBlockStart(lines: string[], index: number): boolean {
|
||||
const line = lines[index];
|
||||
if (/^(`{3,})/.test(line)) return true;
|
||||
if (/^(\*{3,}|-{3,}|_{3,})\s*$/.test(line)) return true;
|
||||
if (/^#{1,6}\s/.test(line)) return true;
|
||||
if (/^>\s?/.test(line)) return true;
|
||||
if (/^[*\-]\s/.test(line) || /^\d+\.\s/.test(line)) return true;
|
||||
if (line.indexOf('|') !== -1 && index + 1 < lines.length &&
|
||||
/^\|?\s*:?-+:?\s*(\|\s*:?-+:?\s*)*\|?\s*$/.test(lines[index + 1])) return true;
|
||||
return false;
|
||||
}
|
||||
|
||||
function parseTableRow(line: string): string[] {
|
||||
return line.replace(/^\|/, '').replace(/\|$/, '').split('|').map(cell => cell.trim());
|
||||
}
|
||||
|
||||
function parseAligns(line: string): (string | null)[] {
|
||||
return parseTableRow(line).map(cell => {
|
||||
if (/^:-+:$/.test(cell)) return 'center';
|
||||
if (/^-+:$/.test(cell)) return 'right';
|
||||
return null;
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* The default set of block-level tags, matched in order.
|
||||
* Paragraph is the catch-all and must be last.
|
||||
*/
|
||||
export const defaultBlockTags: Record<string, Tag> = {
|
||||
|
||||
'PRE': {
|
||||
/*
|
||||
* ```lang
|
||||
* code here
|
||||
* ```
|
||||
*/
|
||||
name: 'fencedCode',
|
||||
match: (context) => {
|
||||
const matched = context.lines[context.index].match(/^(`{3,})(.*)/);
|
||||
if (!matched) return null;
|
||||
const fence = matched[1], lang = matched[2].trim();
|
||||
const code: string[] = [];
|
||||
let i = context.index + 1;
|
||||
while (i < context.lines.length && !context.lines[i].startsWith(fence))
|
||||
code.push(context.lines[i++]);
|
||||
return {
|
||||
content: code.join('\n'),
|
||||
raw: '',
|
||||
consumed: i + 1 - context.index,
|
||||
meta: {
|
||||
lang,
|
||||
},
|
||||
};
|
||||
},
|
||||
toHTML: (token) =>
|
||||
'<pre><code' + (token.meta?.lang ? ` class="language-${escapeHtml(token.meta.lang)}"` : '') +
|
||||
'>' + escapeHtml(token.content) + '</code></pre>',
|
||||
selector: 'PRE',
|
||||
toMarkdown: (element) => {
|
||||
const code = element.querySelector('code');
|
||||
const lang = (code?.getAttribute('class') || '').match(/language-(\S+)/)?.[1] || '';
|
||||
return '\n\n```' + lang + '\n' + (code?.textContent || element.textContent || '') + '\n```\n\n';
|
||||
},
|
||||
},
|
||||
|
||||
'HR': {
|
||||
/*
|
||||
* ***
|
||||
* ---
|
||||
* ___
|
||||
*/
|
||||
name: 'hr',
|
||||
match: (context) => {
|
||||
if (!/^(\*{3,}|-{3,}|_{3,})\s*$/.test(context.lines[context.index])) {
|
||||
return null;
|
||||
}
|
||||
return {
|
||||
content: '',
|
||||
raw: '',
|
||||
consumed: 1,
|
||||
};
|
||||
},
|
||||
toHTML: () => '<hr>',
|
||||
selector: 'HR',
|
||||
toMarkdown: () => '\n\n---\n\n',
|
||||
},
|
||||
|
||||
'H1,H2,H3,H4,H5,H6': {
|
||||
/*
|
||||
* # Heading 1
|
||||
* ## Heading 2
|
||||
* ### Heading 3
|
||||
*/
|
||||
name: 'heading',
|
||||
match: (context) => {
|
||||
const matched = context.lines[context.index].match(/^(#{1,6})\s+(.*)/);
|
||||
if (!matched) return null;
|
||||
return {
|
||||
content: matched[2].trim(),
|
||||
raw: '',
|
||||
consumed: 1,
|
||||
meta: {
|
||||
level: String(matched[1].length),
|
||||
},
|
||||
};
|
||||
},
|
||||
toHTML: (token, convert) =>
|
||||
`<h${token.meta!.level} id='${camelId(token.content)}'>${convert.inline(token.content)}</h${token.meta!.level}>`,
|
||||
selector: 'H1,H2,H3,H4,H5,H6',
|
||||
toMarkdown: (element, convert) =>
|
||||
'\n\n' + '#'.repeat(parseInt(element.nodeName[1])) + ' ' + convert.children(element) + '\n\n',
|
||||
},
|
||||
|
||||
'BLOCKQUOTE': {
|
||||
/*
|
||||
* > quoted text
|
||||
* > more quoted text
|
||||
*/
|
||||
name: 'blockquote',
|
||||
match: (context) => {
|
||||
if (!/^>\s?/.test(context.lines[context.index])) return null;
|
||||
const lines: string[] = [];
|
||||
let i = context.index;
|
||||
while (i < context.lines.length && /^>\s?/.test(context.lines[i]))
|
||||
lines.push(context.lines[i++].replace(/^>\s?/, ''));
|
||||
return {
|
||||
content: lines.join('\n'),
|
||||
raw: '',
|
||||
consumed: i - context.index,
|
||||
};
|
||||
},
|
||||
toHTML: (token, convert) => '<blockquote>' + convert.block(token.content) + '</blockquote>',
|
||||
selector: 'BLOCKQUOTE',
|
||||
toMarkdown: (element, convert) =>
|
||||
'\n\n' + convert.children(element).trim().split('\n').map(line => '> ' + line).join('\n') + '\n\n',
|
||||
},
|
||||
|
||||
'UL,OL': {
|
||||
/*
|
||||
* - unordered item
|
||||
* - unordered item
|
||||
* - nested item
|
||||
*
|
||||
* 1. ordered item
|
||||
* 2. ordered item
|
||||
*/
|
||||
name: 'list',
|
||||
match: (context) => {
|
||||
const line = context.lines[context.index];
|
||||
if (!/^[*\-]\s/.test(line) && !/^\d+\.\s/.test(line)) return null;
|
||||
return {
|
||||
content: '',
|
||||
raw: '',
|
||||
consumed: 0,
|
||||
};
|
||||
},
|
||||
toHTML: (token) => token.raw,
|
||||
selector: 'UL,OL',
|
||||
toMarkdown: (element, convert) =>
|
||||
listToMd(element, 0, convert),
|
||||
},
|
||||
|
||||
'TABLE': {
|
||||
/*
|
||||
* | head 1 | head 2 |
|
||||
* |--------|--------|
|
||||
* | cell 1 | cell 2 |
|
||||
*/
|
||||
name: 'table',
|
||||
match: (context) => {
|
||||
const { lines, index } = context;
|
||||
if (lines[index].indexOf('|') === -1 || index + 1 >= lines.length) return null;
|
||||
if (!/^\|?\s*:?-+:?\s*(\|\s*:?-+:?\s*)*\|?\s*$/.test(lines[index + 1])) return null;
|
||||
const headers = parseTableRow(lines[index]);
|
||||
const aligns = parseAligns(lines[index + 1]);
|
||||
const rows: string[][] = [];
|
||||
let i = index + 2;
|
||||
while (i < lines.length && lines[i].indexOf('|') !== -1 && !/^\s*$/.test(lines[i]))
|
||||
rows.push(parseTableRow(lines[i++]));
|
||||
return {
|
||||
content: '',
|
||||
raw: '',
|
||||
consumed: i - index,
|
||||
meta: {
|
||||
headers: JSON.stringify(headers),
|
||||
aligns: JSON.stringify(aligns),
|
||||
rows: JSON.stringify(rows),
|
||||
},
|
||||
};
|
||||
},
|
||||
toHTML: (token, convert) => {
|
||||
const headers: string[] = JSON.parse(token.meta!.headers);
|
||||
const aligns: (string | null)[] = JSON.parse(token.meta!.aligns);
|
||||
const rows: string[][] = JSON.parse(token.meta!.rows);
|
||||
function cell(tag: string, text: string, index: number): string {
|
||||
const align = aligns[index] ? ` style="text-align:${aligns[index]}"` : '';
|
||||
return `<${tag}${align}>${convert.inline(text)}</${tag}>`;
|
||||
}
|
||||
const head = '<thead><tr>' + headers.map((text, i) => cell('th', text, i)).join('') + '</tr></thead>';
|
||||
const body = rows.map(row =>
|
||||
'<tr>' + row.map((text, i) => cell('td', text, i)).join('') + '</tr>'
|
||||
).join('');
|
||||
return '<table>' + head + '<tbody>' + body + '</tbody></table>';
|
||||
},
|
||||
selector: 'TABLE',
|
||||
toMarkdown: (element, convert) => {
|
||||
const rows = Array.from(element.querySelectorAll('tr'));
|
||||
if (!rows.length) return '';
|
||||
const headers = Array.from(rows[0].querySelectorAll('th,td')).map(cell => convert.children(cell).trim());
|
||||
const separator = headers.map(() => '---');
|
||||
const output = [
|
||||
'| ' + headers.join(' | ') + ' |',
|
||||
'| ' + separator.join(' | ') + ' |',
|
||||
];
|
||||
rows.slice(1).forEach(row => {
|
||||
const cells = Array.from(row.querySelectorAll('td,th')).map(cell => convert.children(cell).trim());
|
||||
output.push('| ' + cells.join(' | ') + ' |');
|
||||
});
|
||||
return '\n\n' + output.join('\n') + '\n\n';
|
||||
},
|
||||
},
|
||||
|
||||
'P': {
|
||||
/*
|
||||
* Any text that doesn't match another block tag
|
||||
* becomes a paragraph.
|
||||
*/
|
||||
name: 'paragraph',
|
||||
match: (context) => {
|
||||
const collected: string[] = [];
|
||||
let i = context.index;
|
||||
while (i < context.lines.length && !/^\s*$/.test(context.lines[i]) && !isBlockStart(context.lines, i))
|
||||
collected.push(context.lines[i++]);
|
||||
return collected.length
|
||||
? {
|
||||
content: collected.join('\n'),
|
||||
raw: '',
|
||||
consumed: i - context.index,
|
||||
}
|
||||
: null;
|
||||
},
|
||||
toHTML: (token, convert) => '<p>' + convert.inline(token.content) + '</p>',
|
||||
selector: 'P',
|
||||
toMarkdown: (element, convert) => '\n\n' + convert.children(element) + '\n\n',
|
||||
},
|
||||
};
|
||||
|
||||
/**
|
||||
* The default set of inline tags, matched in precedence order.
|
||||
* Tags created with inlineTag() carry a precedence field; lower values run first.
|
||||
*/
|
||||
export const defaultInlineTags: Record<string, Tag> = {
|
||||
|
||||
'CODE': inlineTag({
|
||||
/*
|
||||
* `inline code`
|
||||
*/
|
||||
name: 'code',
|
||||
delimiter: '`',
|
||||
htmlTag: 'code',
|
||||
precedence: 10,
|
||||
recursive: false,
|
||||
}),
|
||||
|
||||
'A': {
|
||||
/*
|
||||
* [link text](http://example.com)
|
||||
*/
|
||||
name: 'link',
|
||||
match: (context) => {
|
||||
const matched = context.text.slice(context.offset).match(/^\[([^\]]+)\]\(([^)]+)\)/);
|
||||
if (!matched) {
|
||||
return null;
|
||||
}
|
||||
return {
|
||||
content: matched[1],
|
||||
raw: matched[0],
|
||||
consumed: matched[0].length,
|
||||
meta: {
|
||||
href: matched[2],
|
||||
},
|
||||
};
|
||||
},
|
||||
toHTML: (token, convert) =>
|
||||
'<a href="' + escapeHtml(token.meta!.href) + '">' + convert.inline(token.content) + '</a>',
|
||||
selector: 'A',
|
||||
toMarkdown: (element, convert) =>
|
||||
'[' + convert.children(element) + '](' + (element.getAttribute('href') || '') + ')',
|
||||
},
|
||||
|
||||
'_boldItalic': {
|
||||
/*
|
||||
* ***bold and italic***
|
||||
*/
|
||||
...inlineTag({
|
||||
name: 'boldItalic',
|
||||
delimiter: '***',
|
||||
htmlTag: 'em',
|
||||
precedence: 30,
|
||||
}),
|
||||
toHTML: (token, convert) =>
|
||||
'<em><strong>' + convert.inline(token.content) + '</strong></em>',
|
||||
selector: ((element: HTMLElement) => false) as string | ((element: HTMLElement) => boolean),
|
||||
toMarkdown: () => '',
|
||||
},
|
||||
|
||||
'STRONG,B': inlineTag({
|
||||
/*
|
||||
* **bold text**
|
||||
*/
|
||||
name: 'bold',
|
||||
delimiter: '**',
|
||||
htmlTag: 'strong',
|
||||
aliases: 'B',
|
||||
precedence: 40,
|
||||
}),
|
||||
|
||||
'EM,I': inlineTag({
|
||||
/*
|
||||
* *italic text*
|
||||
*/
|
||||
name: 'italic',
|
||||
delimiter: '*',
|
||||
htmlTag: 'em',
|
||||
aliases: 'I',
|
||||
precedence: 50,
|
||||
}),
|
||||
};
|
||||
|
||||
/**
|
||||
* All default tags: block tags merged with inline tags.
|
||||
*/
|
||||
export const defaultTags: Record<string, Tag> = {
|
||||
...defaultBlockTags,
|
||||
...defaultInlineTags,
|
||||
};
|
||||
@@ -0,0 +1,114 @@
|
||||
/*
|
||||
* theme-manager.ts — manages theme registration and activation for a Ribbit instance.
|
||||
*/
|
||||
|
||||
import type { RibbitTheme } from './types';
|
||||
import { HopDown } from './hopdown';
|
||||
|
||||
export class ThemeManager {
|
||||
private registered: Map<string, RibbitTheme>;
|
||||
private disabled: Set<string>;
|
||||
private active: RibbitTheme;
|
||||
private themeLink: HTMLLinkElement | null;
|
||||
private themesPath: string;
|
||||
private onSwitch: (theme: RibbitTheme) => void;
|
||||
|
||||
constructor(initial: RibbitTheme, themesPath: string, onSwitch: (theme: RibbitTheme) => void) {
|
||||
this.registered = new Map();
|
||||
this.disabled = new Set();
|
||||
this.themeLink = null;
|
||||
this.themesPath = themesPath;
|
||||
this.onSwitch = onSwitch;
|
||||
this.active = initial;
|
||||
this.add(initial);
|
||||
}
|
||||
|
||||
/**
|
||||
* Register a theme. Themes must be added before they can be enabled.
|
||||
*/
|
||||
add(theme: RibbitTheme): void {
|
||||
this.registered.set(theme.name, theme);
|
||||
}
|
||||
|
||||
/**
|
||||
* Unregister a theme by name. Cannot remove the active theme.
|
||||
*/
|
||||
remove(name: string): void {
|
||||
if (this.active.name === name) {
|
||||
throw new Error(`Cannot remove the active theme "${name}".`);
|
||||
}
|
||||
this.registered.delete(name);
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the names of all registered and enabled themes.
|
||||
*/
|
||||
list(): string[] {
|
||||
return Array.from(this.registered.keys()).filter(name => !this.disabled.has(name));
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a registered theme by name, or undefined if not found.
|
||||
*/
|
||||
get(name: string): RibbitTheme | undefined {
|
||||
return this.registered.get(name);
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the currently active theme.
|
||||
*/
|
||||
current(): RibbitTheme {
|
||||
return this.active;
|
||||
}
|
||||
|
||||
/**
|
||||
* Switch to a registered theme by name. The theme must be
|
||||
* registered and enabled. Loads the theme's CSS and notifies
|
||||
* the editor to rebuild its converter.
|
||||
*/
|
||||
set(name: string): void {
|
||||
const theme = this.registered.get(name);
|
||||
if (!theme) {
|
||||
throw new Error(`Theme "${name}" is not registered. Call add() first.`);
|
||||
}
|
||||
if (this.disabled.has(name)) {
|
||||
throw new Error(`Theme "${name}" is disabled. Call enable() first.`);
|
||||
}
|
||||
this.active = theme;
|
||||
this.loadCSS(name);
|
||||
this.onSwitch(theme);
|
||||
}
|
||||
|
||||
/**
|
||||
* Mark a theme as available for selection via set().
|
||||
* Themes are enabled by default when added.
|
||||
*/
|
||||
enable(name: string): void {
|
||||
if (!this.registered.has(name)) {
|
||||
throw new Error(`Theme "${name}" is not registered. Call add() first.`);
|
||||
}
|
||||
this.disabled.delete(name);
|
||||
}
|
||||
|
||||
/**
|
||||
* Mark a theme as unavailable for selection via set().
|
||||
* Does not affect the current theme if it is already active.
|
||||
*/
|
||||
disable(name: string): void {
|
||||
if (!this.registered.has(name)) {
|
||||
throw new Error(`Theme "${name}" is not registered.`);
|
||||
}
|
||||
this.disabled.add(name);
|
||||
}
|
||||
|
||||
private loadCSS(name: string): void {
|
||||
if (this.themeLink) {
|
||||
this.themeLink.remove();
|
||||
}
|
||||
const link = document.createElement('link');
|
||||
link.rel = 'stylesheet';
|
||||
link.href = `${this.themesPath}/${name}/theme.css`;
|
||||
document.head.appendChild(link);
|
||||
this.themeLink = link;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,66 @@
|
||||
/*
|
||||
* types.ts — shared types for the hopdown converter.
|
||||
*/
|
||||
|
||||
export interface SourceToken {
|
||||
content: string;
|
||||
raw: string;
|
||||
consumed: number;
|
||||
meta?: Record<string, string>;
|
||||
}
|
||||
|
||||
export interface Converter {
|
||||
inline: (text: string) => string;
|
||||
block: (md: string) => string;
|
||||
children: (node: Node) => string;
|
||||
node: (node: Node) => string;
|
||||
}
|
||||
|
||||
export interface MatchContext {
|
||||
lines: string[];
|
||||
index: number;
|
||||
text: string;
|
||||
offset: number;
|
||||
}
|
||||
|
||||
export interface Tag {
|
||||
name: string;
|
||||
match: (context: MatchContext) => SourceToken | null;
|
||||
toHTML: (token: SourceToken, convert: Converter) => string;
|
||||
selector: string | ((element: HTMLElement) => boolean);
|
||||
toMarkdown: (element: HTMLElement, convert: Converter) => string;
|
||||
}
|
||||
|
||||
export interface ListItem {
|
||||
text: string;
|
||||
sub: string;
|
||||
}
|
||||
|
||||
export interface ListResult {
|
||||
html: string;
|
||||
end: number;
|
||||
}
|
||||
|
||||
export interface InlineTagDef {
|
||||
name: string;
|
||||
/** The markdown delimiter, e.g. '**' or '`' or '~~' */
|
||||
delimiter: string;
|
||||
/** The HTML tag to wrap with, e.g. 'strong' or 'code' */
|
||||
htmlTag: string;
|
||||
/** Additional HTML selectors for reverse matching, e.g. 'B' for bold */
|
||||
aliases?: string;
|
||||
/** Lower runs first. Default 50. */
|
||||
precedence?: number;
|
||||
/** Process inner content for nested markdown? Default true. False for code spans. */
|
||||
recursive?: boolean;
|
||||
}
|
||||
|
||||
export interface RibbitThemeFeatures {
|
||||
sourceMode?: boolean;
|
||||
}
|
||||
|
||||
export interface RibbitTheme {
|
||||
name: string;
|
||||
tags?: Record<string, Tag>;
|
||||
features?: RibbitThemeFeatures;
|
||||
}
|
||||
Reference in New Issue
Block a user