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| import { VantComponent } from '../common/component';
| import { addUnit } from '../common/utils';
| let ARRAY = [];
| VantComponent({
| field: true,
| relation: {
| name: 'dropdown-item',
| type: 'descendant',
| current: 'dropdown-menu',
| linked() {
| this.updateItemListData();
| },
| unlinked() {
| this.updateItemListData();
| },
| },
| props: {
| activeColor: {
| type: String,
| observer: 'updateChildrenData',
| },
| overlay: {
| type: Boolean,
| value: true,
| observer: 'updateChildrenData',
| },
| zIndex: {
| type: Number,
| value: 10,
| },
| duration: {
| type: Number,
| value: 200,
| observer: 'updateChildrenData',
| },
| direction: {
| type: String,
| value: 'down',
| observer: 'updateChildrenData',
| },
| closeOnClickOverlay: {
| type: Boolean,
| value: true,
| observer: 'updateChildrenData',
| },
| closeOnClickOutside: {
| type: Boolean,
| value: true,
| },
| },
| data: {
| itemListData: [],
| },
| beforeCreate() {
| const { windowHeight } = wx.getSystemInfoSync();
| this.windowHeight = windowHeight;
| ARRAY.push(this);
| },
| destroyed() {
| ARRAY = ARRAY.filter((item) => item !== this);
| },
| methods: {
| updateItemListData() {
| this.setData({
| itemListData: this.children.map((child) => child.data),
| });
| },
| updateChildrenData() {
| this.children.forEach((child) => {
| child.updateDataFromParent();
| });
| },
| toggleItem(active) {
| this.children.forEach((item, index) => {
| const { showPopup } = item.data;
| if (index === active) {
| item.toggle();
| } else if (showPopup) {
| item.toggle(false, { immediate: true });
| }
| });
| },
| close() {
| this.children.forEach((child) => {
| child.toggle(false, { immediate: true });
| });
| },
| getChildWrapperStyle() {
| const { zIndex, direction } = this.data;
| return this.getRect('.van-dropdown-menu').then((rect) => {
| const { top = 0, bottom = 0 } = rect;
| const offset = direction === 'down' ? bottom : this.windowHeight - top;
| let wrapperStyle = `z-index: ${zIndex};`;
| if (direction === 'down') {
| wrapperStyle += `top: ${addUnit(offset)};`;
| } else {
| wrapperStyle += `bottom: ${addUnit(offset)};`;
| }
| return wrapperStyle;
| });
| },
| onTitleTap(event) {
| const { index } = event.currentTarget.dataset;
| const child = this.children[index];
| if (!child.data.disabled) {
| ARRAY.forEach((menuItem) => {
| if (
| menuItem &&
| menuItem.data.closeOnClickOutside &&
| menuItem !== this
| ) {
| menuItem.close();
| }
| });
| this.toggleItem(index);
| }
| },
| },
| });
|
|
