shenweishi/node_modules/@vant/weapp/dist/collapse-item/index.js

import { VantComponent } from '../common/component';
import { useParent } from '../common/relation';
import { setContentAnimate } from './animate';
VantComponent({
    classes: ['title-class', 'content-class'],
    relation: useParent('collapse'),
    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,
    },
    mounted() {
        this.updateExpanded();
        this.mounted = true;
    },
    methods: {
        updateExpanded() {
            if (!this.parent) {
                return;
            }
            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) {
                setContentAnimate(this, expanded, this.mounted);
            }
            this.setData({ index, expanded });
        },
        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);
        },
    },
});