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| import { VantComponent } from '../common/component';
| VantComponent({
| classes: ['title-class', 'content-class'],
| relation: {
| name: 'collapse',
| type: 'ancestor',
| current: 'collapse-item',
| },
| props: {
| name: null,
| title: null,
| value: null,
| icon: String,
| label: String,
| disabled: Boolean,
| clickable: Boolean,
| border: {
| type: Boolean,
| value: true,
| },
| isLink: {
| type: Boolean,
| value: true,
| },
| },
| data: {
| expanded: false,
| },
| created() {
| this.animation = wx.createAnimation({
| duration: 0,
| timingFunction: 'ease-in-out',
| });
| },
| mounted() {
| this.updateExpanded();
| this.inited = true;
| },
| methods: {
| updateExpanded() {
| if (!this.parent) {
| return Promise.resolve();
| }
| const { value, accordion } = this.parent.data;
| const { children = [] } = this.parent;
| const { name } = this.data;
| const index = children.indexOf(this);
| const currentName = name == null ? index : name;
| const expanded = accordion
| ? value === currentName
| : (value || []).some((name) => name === currentName);
| if (expanded !== this.data.expanded) {
| this.updateStyle(expanded);
| }
| this.setData({ index, expanded });
| },
| updateStyle(expanded) {
| const { inited } = this;
| this.getRect('.van-collapse-item__content')
| .then((rect) => rect.height)
| .then((height) => {
| const { animation } = this;
| if (expanded) {
| animation
| .height(height)
| .top(1)
| .step({
| duration: inited ? 300 : 1,
| })
| .height('auto')
| .step();
| this.setData({
| animation: animation.export(),
| });
| return;
| }
| animation.height(height).top(0).step({ duration: 1 }).height(0).step({
| duration: 300,
| });
| this.setData({
| animation: animation.export(),
| });
| });
| },
| onClick() {
| if (this.data.disabled) {
| return;
| }
| const { name, expanded } = this.data;
| const index = this.parent.children.indexOf(this);
| const currentName = name == null ? index : name;
| this.parent.switch(currentName, !expanded);
| },
| },
| });
|
|
