Function eventProperties

plugins/MultiDrag/MultiDrag.js:554–584

()

			}
		},
		eventProperties() {
			const oldIndicies = [],
				newIndicies = [];

			multiDragElements.forEach(multiDragElement => {
				oldIndicies.push({
					multiDragElement,
					index: multiDragElement.sortableIndex
				});

				// multiDragElements will already be sorted if folding
				let newIndex;
				if (folding && multiDragElement !== dragEl) {
					newIndex = -1;
				} else if (folding) {
					newIndex = index(multiDragElement, ':not(.' + this.options.selectedClass + ')');
				} else {
					newIndex = index(multiDragElement);
				}
				newIndicies.push({
					multiDragElement,
					index: newIndex
				});
			});
			return {
				items: [...multiDragElements],
				clones: [...multiDragClones],
				oldIndicies,
				newIndicies
			};
		},
		optionListeners: {
			multiDragKey(key) {
				key = key.toLowerCase();