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105
mdui_patched/components/bottom-app-bar/index.js
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105
mdui_patched/components/bottom-app-bar/index.js
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import { __decorate } from "tslib";
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import { html } from 'lit';
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import { customElement, property } from 'lit/decorators.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 { ScrollBehaviorMixin } from '@mdui/shared/mixins/scrollBehavior.js';
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import { LayoutItemBase } from '../layout/layout-item-base.js';
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import { style } from './style.js';
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/**
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* @summary 底部应用栏组件
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*
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* ```html
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* <mdui-bottom-app-bar>
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* ..<mdui-button-icon icon="check_box--outlined"></mdui-button-icon>
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* ..<mdui-button-icon icon="edit--outlined"></mdui-button-icon>
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* ..<mdui-button-icon icon="mic_none--outlined"></mdui-button-icon>
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* ..<mdui-button-icon icon="image--outlined"></mdui-button-icon>
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* ..<div style="flex-grow: 1"></div>
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* ..<mdui-fab icon="add"></mdui-fab>
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* </mdui-bottom-app-bar>
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* ```
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*
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* @event show - 开始显示时,事件被触发。可以通过调用 `event.preventDefault()` 阻止显示
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* @event shown - 显示动画完成时,事件被触发
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* @event hide - 开始隐藏时,事件被触发。可以通过调用 `event.preventDefault()` 阻止隐藏
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* @event hidden - 隐藏动画完成时,事件被触发
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*
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* @slot - 底部应用栏内部的元素
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*
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* @cssprop --shape-corner - 组件的圆角大小。可以指定一个具体的像素值;但更推荐引用[设计令牌](/docs/2/styles/design-tokens#shape-corner)
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* @cssprop --z-index - 组件的 CSS `z-index` 值
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*/
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let BottomAppBar = class BottomAppBar extends ScrollBehaviorMixin(LayoutItemBase) {
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constructor() {
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super(...arguments);
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/**
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* 是否隐藏
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*/
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this.hide = false;
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/**
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* 是否让底部应用栏中的 [`<mdui-fab>`](/docs/2/components/fab) 组件脱离应用栏。如果为 `true`,则当应用栏隐藏后,[`<mdui-fab>`](/docs/2/components/fab) 仍会停留在页面上
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*/
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this.fabDetach = false;
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}
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get scrollPaddingPosition() {
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return 'bottom';
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}
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get layoutPlacement() {
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return 'bottom';
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}
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firstUpdated(_changedProperties) {
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super.firstUpdated(_changedProperties);
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this.addEventListener('transitionend', (event) => {
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if (event.target === this) {
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this.emit(this.hide ? 'hidden' : 'shown');
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}
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});
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}
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render() {
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return html `<slot></slot>`;
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}
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/**
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* 滚动行为
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* 当前仅支持 hide 这一个行为,所以不做行为类型判断
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*/
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runScrollThreshold(isScrollingUp) {
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// 向下滚动
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if (!isScrollingUp && !this.hide) {
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const eventProceeded = this.emit('hide', { cancelable: true });
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if (eventProceeded) {
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this.hide = true;
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}
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}
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// 向上滚动
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if (isScrollingUp && this.hide) {
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const eventProceeded = this.emit('show', { cancelable: true });
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if (eventProceeded) {
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this.hide = false;
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}
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}
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}
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};
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BottomAppBar.styles = [componentStyle, style];
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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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], BottomAppBar.prototype, "hide", 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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attribute: 'fab-detach',
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})
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], BottomAppBar.prototype, "fabDetach", void 0);
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__decorate([
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property({ reflect: true, attribute: 'scroll-behavior' })
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], BottomAppBar.prototype, "scrollBehavior", void 0);
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BottomAppBar = __decorate([
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customElement('mdui-bottom-app-bar')
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], BottomAppBar);
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export { BottomAppBar };
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