78 lines
1.8 KiB
TypeScript
78 lines
1.8 KiB
TypeScript
import {
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Decoration,
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EditorState,
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Range,
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syntaxTree,
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WidgetType,
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} from "../deps.ts";
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import { decoratorStateField } from "./util.ts";
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import type { Space } from "../../common/spaces/space.ts";
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class InlineImageWidget extends WidgetType {
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constructor(
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readonly url: string,
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readonly title: string,
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readonly space: Space,
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) {
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super();
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}
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eq(other: InlineImageWidget) {
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return other.url === this.url && other.title === this.title;
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}
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toDOM() {
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const img = document.createElement("img");
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if (this.url.startsWith("http")) {
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img.src = this.url;
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} else {
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// Load the image as a dataURL and inject it into the img's src attribute
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this.space.readAttachment(decodeURIComponent(this.url), "dataurl").then(
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({ data }) => {
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img.src = data as string;
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},
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);
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}
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img.alt = this.title;
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img.title = this.title;
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img.style.display = "block";
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img.className = "sb-inline-img";
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return img;
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}
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}
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export function inlineImagesPlugin(space: Space) {
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return decoratorStateField((state: EditorState) => {
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const widgets: Range<Decoration>[] = [];
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const imageRegex = /!\[(?<title>[^\]]*)\]\((?<url>.+)\)/;
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syntaxTree(state).iterate({
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enter: (node) => {
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if (node.name !== "Image") {
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return;
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}
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const imageRexexResult = imageRegex.exec(
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state.sliceDoc(node.from, node.to),
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);
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if (imageRexexResult === null || !imageRexexResult.groups) {
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return;
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}
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const url = imageRexexResult.groups.url;
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const title = imageRexexResult.groups.title;
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widgets.push(
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Decoration.widget({
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widget: new InlineImageWidget(url, title, space),
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}).range(node.to),
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);
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},
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});
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return Decoration.set(widgets, true);
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});
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}
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