Ben Stull
80 lines
3.0 KiB
TypeScript
80 lines
3.0 KiB
TypeScript
/**
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* F7 preview webview client (sealed sandbox, INV-21). Receives annotated HTML
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* from the extension host and swaps it in; runs mermaid over `.mermaid` blocks
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* (mermaid needs a DOM, so it runs here, not in the host). Bundled by esbuild as
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* a standalone IIFE → out/media/preview.js, so mermaid never enters the host
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* bundle. No network, no LLM.
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*/
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import mermaid from "mermaid";
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// Imported so esbuild emits the sibling out/media/preview.css (the controller
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// links it into the sealed shell via asWebviewUri).
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import "./preview.css";
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declare function acquireVsCodeApi(): { postMessage(m: unknown): void };
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interface RenderMessage {
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type: "render";
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mode: "changes" | "authorship";
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html: string;
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epoch?: string;
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summary?: { added: number; removed: number; changed: number };
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legend?: { claude: boolean; human: boolean };
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}
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const vscodeApi = acquireVsCodeApi();
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const body = document.getElementById("cw-body")!;
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const header = document.getElementById("cw-epoch")!;
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const summary = document.getElementById("cw-summary")!;
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const legend = document.getElementById("cw-legend")!;
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const segs = Array.from(document.querySelectorAll<HTMLButtonElement>(".cw-seg"));
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for (const seg of segs) {
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seg.addEventListener("click", () => {
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vscodeApi.postMessage({ type: "setMode", mode: seg.dataset.mode });
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});
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}
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function themeFor(): "dark" | "default" {
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return document.body.classList.contains("vscode-dark") ||
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document.body.classList.contains("vscode-high-contrast")
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? "dark"
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: "default";
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}
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async function renderMermaid(): Promise<void> {
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const nodes = Array.from(body.querySelectorAll<HTMLElement>("pre.mermaid"));
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if (nodes.length === 0) return;
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mermaid.initialize({ startOnLoad: false, theme: themeFor(), securityLevel: "strict" });
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try {
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await mermaid.run({ nodes });
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} catch {
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// mermaid.run already marks failed nodes; ensure a visible chip per failure.
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for (const n of nodes) {
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if (!n.querySelector("svg")) n.setAttribute("data-cw-error", "true");
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}
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}
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}
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window.addEventListener("message", (event: MessageEvent<RenderMessage>) => {
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const msg = event.data;
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if (msg?.type !== "render") return;
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body.innerHTML = msg.html;
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for (const seg of segs) seg.classList.toggle("cw-seg-on", seg.dataset.mode === msg.mode);
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const authorship = msg.mode === "authorship";
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header.hidden = authorship;
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summary.hidden = authorship;
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legend.hidden = !authorship;
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if (authorship) {
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const parts: string[] = [];
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if (msg.legend?.claude) parts.push('<span class="cw-by-claude cw-swatch">Claude</span>');
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if (msg.legend?.human) parts.push('<span class="cw-by-human cw-swatch">You</span>');
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legend.innerHTML = parts.join(" ") || "no attribution yet";
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} else {
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header.textContent = `Track changes since ${msg.epoch ?? ""}`;
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summary.innerHTML =
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`<span class="cw-add">+${(msg.summary?.added ?? 0) + (msg.summary?.changed ?? 0)}</span> ` +
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`<span class="cw-del">−${(msg.summary?.removed ?? 0) + (msg.summary?.changed ?? 0)}</span>`;
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}
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void renderMermaid();
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});
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