Function MultiDrag

plugins/MultiDrag/MultiDrag.js:30–66

(sortable)

function MultiDragPlugin() {
	function MultiDrag(sortable) {
		// Bind all private methods
		for (let fn in this) {
			if (fn.charAt(0) === '_' && typeof this[fn] === 'function') {
				this[fn] = this[fn].bind(this);
			}
		}

		if (!sortable.options.avoidImplicitDeselect) {
			if (sortable.options.supportPointer) {
				on(document, 'pointerup', this._deselectMultiDrag);
			} else {
				on(document, 'mouseup', this._deselectMultiDrag);
				on(document, 'touchend', this._deselectMultiDrag);
			}
		}

		on(document, 'keydown', this._checkKeyDown);
		on(document, 'keyup', this._checkKeyUp);

		this.defaults = {
			selectedClass: 'sortable-selected',
			multiDragKey: null,
			avoidImplicitDeselect: false,
			setData(dataTransfer, dragEl) {
				let data = '';
				if (multiDragElements.length && multiDragSortable === sortable) {
					multiDragElements.forEach((multiDragElement, i) => {
						data += (!i ? '' : ', ') + multiDragElement.textContent;
					});
				} else {
					data = dragEl.textContent;
				}
				dataTransfer.setData('Text', data);
			}
		};
	}

	MultiDrag.prototype = {
		multiDragKeyDown: false,