happy-dom
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Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
107 lines • 2.83 kB
JavaScript
import DataTransferItem from './DataTransferItem.js';
import DataTransferItemList from './DataTransferItemList.js';
/**
* DataTransfer.
*
* Reference:
* https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer
*/
export default class DataTransfer {
dropEffect = 'none';
effectAllowed = 'none';
items = new DataTransferItemList();
/**
* Returns files.
*
* @returns Files.
*/
get files() {
const files = [];
for (const item of this.items) {
if (item.kind === 'file') {
const file = item.getAsFile();
if (file) {
files.push(file);
}
}
}
return files;
}
/**
* Returns types.
*
* @returns Types.
*/
get types() {
return this.items.map((item) => item.type);
}
/**
* Clears the data.
*/
clearData() {
this.items.clear();
}
/**
* Sets the data.
*
* @param format Format.
* @param data Data.
*/
setData(format, data) {
for (let i = 0, max = this.items.length; i < max; i++) {
if (this.items[i].type === format) {
this.items[i] = new DataTransferItem(data, format);
return;
}
}
this.items.add(data, format);
}
/**
* Gets the data.
*
* @param format Format.
* @returns Data.
*/
getData(format) {
// Normalize format according to the spec
// https://html.spec.whatwg.org/multipage/dnd.html#dom-datatransfer-getdata
const normalizedFormat = this.#normalizeFormat(format);
for (let i = 0, max = this.items.length; i < max; i++) {
const itemFormat = this.#normalizeFormat(this.items[i].type);
if (itemFormat === normalizedFormat) {
let data = '';
this.items[i].getAsString((s) => (data = s));
return data;
}
}
return '';
}
/**
* Normalizes the format according to the HTML spec.
*
* @param format Format to normalize.
* @returns Normalized format.
*/
#normalizeFormat(format) {
// Convert to lowercase as per spec
const lowercaseFormat = format.toLowerCase();
// "text" is a shorthand for "text/plain"
if (lowercaseFormat === 'text') {
return 'text/plain';
}
// "url" is a shorthand for "text/uri-list"
if (lowercaseFormat === 'url') {
return 'text/uri-list';
}
return lowercaseFormat;
}
/**
* Sets drag image.
*
* TODO: Implement.
*/
setDragImage() {
throw new Error('Not implemented.');
}
}
//# sourceMappingURL=DataTransfer.js.map