import { clientStore, codeWidget, editor, markdown, } from "$sb/silverbullet-syscall/mod.ts"; import { renderToText, traverseTree } from "$sb/lib/tree.ts"; import { CodeWidgetContent } from "$sb/types.ts"; const hideTOCKey = "hideTOC"; const headerThreshold = 3; type Header = { name: string; pos: number; level: number; }; export async function toggleTOC() { let hideTOC = await clientStore.get(hideTOCKey); hideTOC = !hideTOC; await clientStore.set(hideTOCKey, hideTOC); await codeWidget.refreshAll(); } export async function refreshTOC() { await codeWidget.refreshAll(); } export async function renderTOC(): Promise<CodeWidgetContent | null> { if (await clientStore.get(hideTOCKey)) { return null; } const page = await editor.getCurrentPage(); const text = await editor.getText(); const tree = await markdown.parseMarkdown(text); const headers: Header[] = []; traverseTree(tree, (n) => { if (n.type?.startsWith("ATXHeading")) { headers.push({ name: n.children!.slice(1).map(renderToText).join("").trim(), pos: n.from!, level: +n.type[n.type.length - 1], }); return true; } return false; }); if (headers.length < headerThreshold) { console.log("Not enough headers, not showing TOC", headers.length); return null; } // console.log("Headers", headers); const renderedMd = "# Table of Contents\n" + headers.map((header) => `${ " ".repeat((header.level - 1) * 2) }* [[${page}@${header.pos}|${header.name}]]` ).join("\n"); // console.log("Markdown", renderedMd); return { markdown: renderedMd, buttons: [ { description: "Reload", svg: `<svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-refresh-cw"><polyline points="23 4 23 10 17 10"></polyline><polyline points="1 20 1 14 7 14"></polyline><path d="M3.51 9a9 9 0 0 1 14.85-3.36L23 10M1 14l4.64 4.36A9 9 0 0 0 20.49 15"></path></svg>`, invokeFunction: "index.refreshTOC", }, { description: "Hide", svg: `<svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-eye-off"><path d="M17.94 17.94A10.07 10.07 0 0 1 12 20c-7 0-11-8-11-8a18.45 18.45 0 0 1 5.06-5.94M9.9 4.24A9.12 9.12 0 0 1 12 4c7 0 11 8 11 8a18.5 18.5 0 0 1-2.16 3.19m-6.72-1.07a3 3 0 1 1-4.24-4.24"></path><line x1="1" y1="1" x2="23" y2="23"></line></svg>`, invokeFunction: "index.toggleTOC", }, ], }; }