Method _listSelectionChange

packages/main/src/MultiComboBox.ts:1625–1684

(e: CustomEvent<ListSelectionChangeEventDetail>)

	}

	_listSelectionChange(e: CustomEvent<ListSelectionChangeEventDetail>) {
		let changePrevented;

		if (this.readonly) {
			e.preventDefault();
			return;
		}

		if (!isPhone()) {
			this._previouslySelectedItems = e.detail.previouslySelectedItems;
		}

		// don't call selection change right after selection as user can cancel it on phone
		if (!isPhone()) {
			if (this.selectedValues) {
				// Get values from all selected items (not just filtered ones)
				this.selectedValues = this._getItems()
					.filter((i): i is MultiComboBoxItem => isInstanceOfMultiComboBoxItem(i) && i.selected)
					.map(i => i.value)
					.filter((v): v is string => !!v);
			}

			changePrevented = this.fireSelectionChange();

			if (changePrevented) {
				e.preventDefault();
				this._revertSelection();
			}
		}

		// casted to KeyboardEvent since isSpace and isSpaceCtrl accepts KeyboardEvent only
		const castedEvent = { key: e.detail.key } as KeyboardEvent;

		if (!e.detail.selectedItems.length && this.filterSelected) {
			this.filterSelected = false;
		}

		if (this.valueState === ValueState.Negative) {
			this._updateValueState(this._effectiveValueState);
		}

		if (!e.detail.selectionComponentPressed && !isSpace(castedEvent) && !isSpaceCtrl(castedEvent)) {
			this.open = false;
			this.value = "";

			// if the item (not checkbox) is clicked, call the selection change
			if (isPhone()) {
				changePrevented = this.fireSelectionChange();
				if (changePrevented) {
					e.preventDefault();
					this._revertSelection();
				}
			}

			this.fireDecoratorEvent("input");
			return;
		}