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silverbullet/packages/plugs/core/anchor.ts
2022-08-30 10:44:20 +02:00

51 lines
1.5 KiB
TypeScript

import { collectNodesOfType, traverseTree } from "@silverbulletmd/common/tree";
import {
batchSet,
queryPrefix,
} from "@silverbulletmd/plugos-silverbullet-syscall";
import {
getCurrentPage,
matchBefore,
} from "@silverbulletmd/plugos-silverbullet-syscall/editor";
import type { IndexTreeEvent } from "@silverbulletmd/web/app_event";
import { applyQuery, QueryProviderEvent } from "../query/engine";
import { removeQueries } from "../query/util";
// Key space
// a:pageName:anchorName => pos
export async function indexAnchors({ name: pageName, tree }: IndexTreeEvent) {
removeQueries(tree);
let anchors: { key: string; value: string }[] = [];
collectNodesOfType(tree, "NamedAnchor").forEach((n) => {
let aName = n.children![0].text!;
anchors.push({
key: `a:${pageName}:${aName}`,
value: "" + n.from,
});
});
console.log("Found", anchors.length, "anchors(s)");
await batchSet(pageName, anchors);
}
export async function anchorComplete() {
let prefix = await matchBefore("\\[\\[[^\\]@]*@[\\w\\.\\-\\/]*");
if (!prefix) {
return null;
}
const [pageRefPrefix, anchorRef] = prefix.text.split("@");
let pageRef = pageRefPrefix.substring(2);
if (!pageRef) {
pageRef = await getCurrentPage();
}
let allAnchors = await queryPrefix(`a:${pageRef}:@${anchorRef}`);
return {
from: prefix.from + pageRefPrefix.length + 1,
options: allAnchors.map((a) => ({
label: a.key.split("@")[1],
type: "anchor",
})),
};
}