@sussudio/base/common/dataTransfer.mjs

Internal APIs for VS Code's utilities and user interface building blocks.

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
import { distinct } from './arrays.mjs';
import { generateUuid } from './uuid.mjs';
export function createStringDataTransferItem(stringOrPromise) {
	return {
		id: generateUuid(),
		asString: async () => stringOrPromise,
		asFile: () => undefined,
		value: typeof stringOrPromise === 'string' ? stringOrPromise : undefined,
	};
}
export function createFileDataTransferItem(fileName, uri, data) {
	return {
		id: generateUuid(),
		asString: async () => '',
		asFile: () => ({ name: fileName, uri, data }),
		value: undefined,
	};
}
export class VSDataTransfer {
	_entries = new Map();
	get size() {
		return this._entries.size;
	}
	has(mimeType) {
		return this._entries.has(this.toKey(mimeType));
	}
	get(mimeType) {
		return this._entries.get(this.toKey(mimeType))?.[0];
	}
	append(mimeType, value) {
		const existing = this._entries.get(mimeType);
		if (existing) {
			existing.push(value);
		} else {
			this._entries.set(this.toKey(mimeType), [value]);
		}
	}
	replace(mimeType, value) {
		this._entries.set(this.toKey(mimeType), [value]);
	}
	delete(mimeType) {
		this._entries.delete(this.toKey(mimeType));
	}
	*entries() {
		for (const [mine, items] of this._entries.entries()) {
			for (const item of items) {
				yield [mine, item];
			}
		}
	}
	values() {
		return Array.from(this._entries.values()).flat();
	}
	forEach(f) {
		for (const [mime, item] of this.entries()) {
			f(item, mime);
		}
	}
	toKey(mimeType) {
		return mimeType.toLowerCase();
	}
}
export const UriList = Object.freeze({
	// http://amundsen.com/hypermedia/urilist/
	create: (entries) => {
		return distinct(entries.map((x) => x.toString())).join('\r\n');
	},
	split: (str) => {
		return str.split('\r\n');
	},
	parse: (str) => {
		return UriList.split(str).filter((value) => !value.startsWith('#'));
	},
});