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CrescentLeaf
198
mdui_patched/components/collapse/collapse.js
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198
mdui_patched/components/collapse/collapse.js
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import { __decorate } from "tslib";
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import { html } from 'lit';
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import { customElement, property, queryAssignedElements, state, } from 'lit/decorators.js';
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import { $ } from '@mdui/jq/$.js';
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import '@mdui/jq/methods/is.js';
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import { isElement, isUndefined } from '@mdui/jq/shared/helper.js';
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import { MduiElement } from '@mdui/shared/base/mdui-element.js';
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import { DefinedController } from '@mdui/shared/controllers/defined.js';
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import { watch } from '@mdui/shared/decorators/watch.js';
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import { arraysEqualIgnoreOrder } from '@mdui/shared/helpers/array.js';
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import { booleanConverter } from '@mdui/shared/helpers/decorator.js';
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import { componentStyle } from '@mdui/shared/lit-styles/component-style.js';
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import { collapseStyle } from './collapse-style.js';
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/**
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* @summary 折叠面板组件，需配合 `<mdui-collapse-item>` 组件使用
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*
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* ```html
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* <mdui-collapse>
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* ..<mdui-collapse-item header="header-1">content-1</mdui-collapse-item>
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* ..<mdui-collapse-item header="header-2">content-2</mdui-collapse-item>
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* </mdui-collapse>
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* ```
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*
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* @event change - 当前展开的折叠面板项变化时触发
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*
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* @slot - `<mdui-collapse-item>` 组件
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*/
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let Collapse = class Collapse extends MduiElement {
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constructor() {
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super(...arguments);
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/**
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* 是否启用手风琴模式
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*/
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this.accordion = false;
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/**
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* 是否禁用此折叠面板
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*/
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this.disabled = false;
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// 因为 collapse-item 的 value 可能会重复，所以在每个 collapse-item 元素上都添加了一个唯一的 key，通过 activeKey 来记录激活状态的 key
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this.activeKeys = [];
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// 是否是初始状态，初始状态不触发 change 事件，没有动画
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this.isInitial = true;
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this.definedController = new DefinedController(this, {
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relatedElements: ['mdui-collapse-item'],
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});
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}
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async onActiveKeysChange() {
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await this.definedController.whenDefined();
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// 根据 activeKeys 读取对应 collapse-item 的值
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const value = this.accordion
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? this.items.find((item) => this.activeKeys.includes(item.key))?.value
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: this.items
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.filter((item) => this.activeKeys.includes(item.key))
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.map((item) => item.value);
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this.setValue(value);
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if (!this.isInitial) {
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this.emit('change');
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}
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}
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async onValueChange() {
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this.isInitial = !this.hasUpdated;
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await this.definedController.whenDefined();
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if (this.accordion) {
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const value = this.value;
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if (!value) {
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this.setActiveKeys([]);
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}
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else {
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const item = this.items.find((item) => item.value === value);
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this.setActiveKeys(item ? [item.key] : []);
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}
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}
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else {
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const value = this.value;
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if (!value.length) {
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this.setActiveKeys([]);
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}
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else {
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const activeKeys = this.items
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.filter((item) => value.includes(item.value))
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.map((item) => item.key);
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this.setActiveKeys(activeKeys);
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}
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}
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this.updateItems();
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}
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render() {
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return html `<slot @slotchange="${this.onSlotChange}" @click="${this.onClick}"></slot>`;
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}
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setActiveKeys(activeKeys) {
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if (!arraysEqualIgnoreOrder(this.activeKeys, activeKeys)) {
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this.activeKeys = activeKeys;
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}
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}
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setValue(value) {
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if (this.accordion || isUndefined(this.value) || isUndefined(value)) {
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this.value = value;
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}
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else if (!arraysEqualIgnoreOrder(this.value, value)) {
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this.value = value;
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}
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}
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onClick(event) {
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// 全部禁用
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if (this.disabled) {
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return;
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}
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// event.button 为 0 时，为鼠标左键点击。忽略鼠标中键和右键
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if (event.button) {
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return;
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}
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const target = event.target;
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const item = target.closest('mdui-collapse-item');
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// collapse-item 被禁用，忽略
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if (!item || item.disabled) {
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return;
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}
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const path = event.composedPath();
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// 指定了 trigger 时，点击了其他地方时，忽略
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if (item.trigger &&
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!path.find((element) => isElement(element) && $(element).is(item.trigger))) {
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return;
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}
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// header 元素，忽略点击 header 以外的元素
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if (!path.find((element) => isElement(element) && element.part.contains('header'))) {
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return;
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}
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if (this.accordion) {
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if (this.activeKeys.includes(item.key)) {
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this.setActiveKeys([]);
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}
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else {
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this.setActiveKeys([item.key]);
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}
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}
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else {
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// 直接修改 this.activeKeys 无法被 watch 监听到，需要先克隆一份 this.activeKeys
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const activeKeys = [...this.activeKeys];
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if (activeKeys.includes(item.key)) {
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activeKeys.splice(activeKeys.indexOf(item.key), 1);
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}
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else {
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activeKeys.push(item.key);
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}
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this.setActiveKeys(activeKeys);
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}
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this.isInitial = false;
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this.updateItems();
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}
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async onSlotChange() {
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await this.definedController.whenDefined();
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this.updateItems();
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}
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// 更新 <mdui-collapse-item> 的状态
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updateItems() {
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this.items.forEach((item) => {
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item.active = this.activeKeys.includes(item.key);
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item.isInitial = this.isInitial;
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});
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}
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};
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Collapse.styles = [
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componentStyle,
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collapseStyle,
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];
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__decorate([
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property({
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type: Boolean,
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reflect: true,
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converter: booleanConverter,
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})
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], Collapse.prototype, "accordion", void 0);
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__decorate([
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property()
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], Collapse.prototype, "value", void 0);
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__decorate([
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property({
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type: Boolean,
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reflect: true,
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converter: booleanConverter,
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})
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], Collapse.prototype, "disabled", void 0);
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__decorate([
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state()
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], Collapse.prototype, "activeKeys", void 0);
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__decorate([
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queryAssignedElements({ selector: 'mdui-collapse-item', flatten: true })
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], Collapse.prototype, "items", void 0);
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__decorate([
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watch('activeKeys', true)
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], Collapse.prototype, "onActiveKeysChange", null);
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__decorate([
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watch('value')
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], Collapse.prototype, "onValueChange", null);
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Collapse = __decorate([
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customElement('mdui-collapse')
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], Collapse);
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export { Collapse };
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