char-slop/berry

multipurpose self-modifiable agentic harness

git clone https://git.t4t.associates/char-slop/berry

Charlotte Somfix grip styling on settings page4cce09f

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1import type { HeaderContext, HeaderView } from "@berry/api/web.ts";
2import { keyed } from "./ui.ts";
3
4export type HeaderItem = { name: string; create: () => HeaderView };
5
6/** The selected extensions' header widgets, owned by one conversation view. */
7export function headerWidgets() {
8  const element = document.createElement("span");
9  element.className = "extension-headers";
10  const views = keyed<{ item: HeaderItem; context: HeaderContext }, string>(
11    element,
12    ({ item }) => item.name,
13    ({ item, context }) => {
14      let create = item.create;
15      let view = create();
16      view.update(context);
17      return {
18        get node() {
19          return view.element;
20        },
21        update: ({ item, context }) => {
22          if (create !== item.create) {
23            const previous = view.element;
24            view.dispose?.();
25            create = item.create;
26            view = create();
27            previous.replaceWith(view.element);
28          }
29          view.update(context);
30        },
31        dispose: () => view.dispose?.(),
32      };
33    },
34  );
35  return {
36    element,
37    /** `context` is each widget's own, as its extension's handlers are. */
38    update(items: readonly HeaderItem[], context: (extension: string) => HeaderContext) {
39      views.sync(items.map((item) => ({ item, context: context(item.name) })));
40      element.hidden = items.length === 0;
41    },
42    dispose: () => views.dispose(),
43  };
44}