Add the ability to select images with the ArtBrowser

module/apps/ArtBrowser.mjs

@@ -1,5 +1,6 @@
 import { __ID__, filePath } from "../consts.mjs";
 import { getFile, lastModifiedAt } from "../utils/fs.mjs";
+import { imagePath } from "../utils/imagePath.mjs";
 import { paginate } from "../utils/pagination.mjs";
 import { ImageApp } from "./ImageApp.mjs";
 
@@ -22,6 +23,7 @@ export class ArtBrowser extends HandlebarsApplicationMixin(ApplicationV2) {
 			nextPage: this.#nextPage,
 			prevPage: this.#prevPage,
 			uploadImage: this.#uploadImage,
+			select: this.#selectImage,
 		},
 	};
 
@@ -40,12 +42,20 @@ export class ArtBrowser extends HandlebarsApplicationMixin(ApplicationV2) {
 
 	// #region Instance Data
 	#page = 1;
+	#selectCount = 0;
+	#onSubmit = null;
 	filters = {
 		name: ``,
 		tags: [],
 		artists: [],
 	};
 
+	constructor({ selectCount = 0, onSubmit = null, ...opts } = {}) {
+		super(opts);
+		this.#selectCount = selectCount;
+		this.#onSubmit = onSubmit;
+	};
+
 	async setPage(page) {
 		if (this.#page == page) { return };
 		this.#page = page;
@@ -54,6 +64,15 @@ export class ArtBrowser extends HandlebarsApplicationMixin(ApplicationV2) {
 		};
 		return;
 	};
+
+	get selectMode() {
+		if (this.#selectCount === 0) {
+			return `view`;
+		} else if (this.#selectCount === 1) {
+			return `single`;
+		};
+		return `multi`;
+	};
 	// #endregion Instance Data
 
 	// #region Lifecycle
@@ -112,8 +131,21 @@ export class ArtBrowser extends HandlebarsApplicationMixin(ApplicationV2) {
 		};
 	};
 
-	_tearDown(...args) {
-		super._tearDown(...args);
+	async close(options) {
+		this.#submit(null);
+		return super.close(options);
+	};
+
+	#submitted = false;
+	async #submit(value) {
+		if (this.#submitted) return;
+		this.#onSubmit?.(value);
+		this.#submitted = true;
+		this.close();
+	};
+
+	_tearDown(options) {
+		super._tearDown(options);
 		Hooks.off(`${__ID__}.imageUploaded`, this.#imageUploadHook);
 		Hooks.off(`${__ID__}.imageUpdated`, this.#imageUpdateHook);
 	};
@@ -125,7 +157,7 @@ export class ArtBrowser extends HandlebarsApplicationMixin(ApplicationV2) {
 			meta: {
 				idp: this.id,
 			},
-			selectMode: `view`,
+			selectMode: this.selectMode,
 		};
 	};
 
@@ -227,5 +259,54 @@ export class ArtBrowser extends HandlebarsApplicationMixin(ApplicationV2) {
 		const app = new ImageApp();
 		app.render({ force: true });
 	};
+
+	#selected = new Set();
+	/** @this {ArtBrowser} */
+	static async #selectImage(event, target) {
+		if (this.#selectCount === 0) { return };
+
+		const imageID = target.closest(`[data-image-id]`)?.dataset.imageId;
+		const image = this.#imagesDB.data[imageID];
+		if (!imageID || !image) { return };
+
+		const path = imagePath(image);
+		if (this.#selectCount > 1) {
+			if (this.#selected.has(path)) {
+				target.ariaPressed = false;
+				this.#selected.delete(path);
+			} else {
+				target.ariaPressed = true;
+				this.#selected.add(path);
+			};
+			if (this.#selected.size >= this.#selectCount) {
+				await this.#submit(Array.from(this.#selected));
+			};
+		} else {
+			await this.#submit(path);
+		};
+	};
 	// #endregion Actions
+
+	// #region Factories
+	/**
+	 * Opens an ArtBrowser intended to get the user to select some number
+	 * of tokens.
+	 *
+	 * @param {number} count The amount of tokens that the user needs to
+	 * select
+	 * @returns A promise that resolves to a string, string[], or null
+	 */
+	static async select(count = 1) {
+		if (count < 1) {
+			throw "Unable to select 0 or fewer tokens";
+		};
+		return new Promise((resolve) => {
+			const app = new this({
+				selectCount: count,
+				onSubmit: resolve,
+			});
+			app.render({ force: true, });
+		});
+	};
+	// #endregion Factories
 };