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| import { VantComponent } from '../common/component';
| VantComponent({
| field: true,
| relation: {
| name: 'dropdown-menu',
| type: 'ancestor',
| current: 'dropdown-item',
| linked() {
| this.updateDataFromParent();
| },
| },
| props: {
| value: {
| type: null,
| observer: 'rerender',
| },
| title: {
| type: String,
| observer: 'rerender',
| },
| disabled: Boolean,
| titleClass: {
| type: String,
| observer: 'rerender',
| },
| options: {
| type: Array,
| value: [],
| observer: 'rerender',
| },
| popupStyle: String,
| },
| data: {
| transition: true,
| showPopup: false,
| showWrapper: false,
| displayTitle: '',
| },
| methods: {
| rerender() {
| wx.nextTick(() => {
| this.parent && this.parent.updateItemListData();
| });
| },
| updateDataFromParent() {
| if (this.parent) {
| const {
| overlay,
| duration,
| activeColor,
| closeOnClickOverlay,
| direction,
| } = this.parent.data;
| this.setData({
| overlay,
| duration,
| activeColor,
| closeOnClickOverlay,
| direction,
| });
| }
| },
| onOpen() {
| this.$emit('open');
| },
| onOpened() {
| this.$emit('opened');
| },
| onClose() {
| this.$emit('close');
| },
| onClosed() {
| this.$emit('closed');
| this.setData({ showWrapper: false });
| },
| onOptionTap(event) {
| const { option } = event.currentTarget.dataset;
| const { value } = option;
| const shouldEmitChange = this.data.value !== value;
| this.setData({ showPopup: false, value });
| this.$emit('close');
| this.rerender();
| if (shouldEmitChange) {
| this.$emit('change', value);
| }
| },
| toggle(show, options = {}) {
| const { showPopup } = this.data;
| if (typeof show !== 'boolean') {
| show = !showPopup;
| }
| if (show === showPopup) {
| return;
| }
| this.setData({
| transition: !options.immediate,
| showPopup: show,
| });
| if (show) {
| this.parent.getChildWrapperStyle().then((wrapperStyle) => {
| this.setData({ wrapperStyle, showWrapper: true });
| this.rerender();
| });
| } else {
| this.rerender();
| }
| },
| },
| });
|
|
