85 lines
2.9 KiB
TypeScript
85 lines
2.9 KiB
TypeScript
import { Client } from "../client.ts";
|
|
import { Decoration, EditorState, syntaxTree } from "../deps.ts";
|
|
import { MarkdownWidget } from "./markdown_widget.ts";
|
|
import { decoratorStateField, HtmlWidget, isCursorInRange } from "./util.ts";
|
|
|
|
export function frontmatterPlugin(client: Client) {
|
|
const panelWidgetHook = client.system.panelWidgetHook;
|
|
const frontmatterCallback = panelWidgetHook.callbacks.get("frontmatter");
|
|
return decoratorStateField(
|
|
(state: EditorState) => {
|
|
const widgets: any[] = [];
|
|
|
|
syntaxTree(state).iterate({
|
|
enter(node) {
|
|
if (
|
|
node.name === "FrontMatter"
|
|
) {
|
|
if (!isCursorInRange(state, [node.from, node.to])) {
|
|
if (frontmatterCallback) {
|
|
// Render as a widget
|
|
const text = state.sliceDoc(node.from, node.to);
|
|
const lineStrings = text.split("\n");
|
|
|
|
const lines: { from: number; to: number }[] = [];
|
|
let fromIt = node.from;
|
|
for (const line of lineStrings) {
|
|
lines.push({
|
|
from: fromIt,
|
|
to: fromIt + line.length,
|
|
});
|
|
fromIt += line.length + 1;
|
|
}
|
|
|
|
lines.slice(0, lines.length - 1).forEach((line) => {
|
|
widgets.push(
|
|
// Reusing line-table-outside here for laziness reasons
|
|
Decoration.line({ class: "sb-line-table-outside" }).range(
|
|
line.from,
|
|
),
|
|
);
|
|
});
|
|
|
|
widgets.push(
|
|
Decoration.widget({
|
|
widget: new MarkdownWidget(
|
|
undefined,
|
|
client,
|
|
`frontmatter:${client.currentPage}`,
|
|
"",
|
|
frontmatterCallback,
|
|
"sb-markdown-frontmatter-widget",
|
|
),
|
|
block: true,
|
|
}).range(lines[lines.length - 1].from),
|
|
);
|
|
} else if (!frontmatterCallback) {
|
|
// Not rendering as a widget
|
|
widgets.push(
|
|
Decoration.widget({
|
|
widget: new HtmlWidget(
|
|
`frontmatter`,
|
|
"sb-frontmatter-marker",
|
|
),
|
|
}).range(node.from),
|
|
);
|
|
widgets.push(
|
|
Decoration.line({
|
|
class: "sb-line-frontmatter-outside",
|
|
}).range(node.from),
|
|
);
|
|
widgets.push(
|
|
Decoration.line({
|
|
class: "sb-line-frontmatter-outside",
|
|
}).range(state.doc.lineAt(node.to).from),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
});
|
|
return Decoration.set(widgets, true);
|
|
},
|
|
);
|
|
}
|