u-loadmore.vue 4.2 KB
<template>
	<view
	    class="u-loadmore"
	    :style="[
			$u.addStyle(customStyle),
			{
				backgroundColor: bgColor,
				marginBottom: $u.addUnit(marginBottom),
				marginTop: $u.addUnit(marginTop),
				height: $u.addUnit(height),
			},
		]"
	>
		<u-line
		    length="140rpx"
		    color="#E6E8EB"
		    :hairline="false"
			v-if="line"
		></u-line>
		<!-- 加载中和没有更多的状态才显示两边的横线 -->
		<view
		    :class="status == 'loadmore' || status == 'nomore' ? 'u-more' : ''"
		    class="u-loadmore__content"
		>
			<view
			    class="u-loadmore__content__icon-wrap"
			    v-if="status === 'loading' && icon"
			>
				<u-loading-icon
				    :color="iconColor"
				    size="17"
				    :mode="loadingIcon"
				></u-loading-icon>
			</view>
			<!-- 如果没有更多的状态下,显示内容为dot(粗点),加载特定样式 -->
			<text
			    class="u-line-1"
			    :style="[loadTextStyle]"
			    :class="[(status == 'nomore' && isDot == true) ? 'u-loadmore__content__dot-text' : 'u-loadmore__content__text']"
			    @tap="loadMore"
			>{{ showText }}</text>
		</view>
		<u-line
		    length="140rpx"
		    color="#E6E8EB"
			:hairline="false"
			v-if="line"
		></u-line>
	</view>
</template>

<script>
	import props from './props.js';

	/**
	 * loadmore 加载更多
	 * @description 此组件一般用于标识页面底部加载数据时的状态。
	 * @tutorial https://www.uviewui.com/components/loadMore.html
	 * @property {String}			status			组件状态(默认 'loadmore' )
	 * @property {String}			bgColor			组件背景颜色,在页面是非白色时会用到(默认 'transparent' )
	 * @property {Boolean}			icon			加载中时是否显示图标(默认 true )
	 * @property {String | Number}	fontSize		字体大小(默认 14 )
	 * @property {String}			color			字体颜色(默认 '#606266' )
	 * @property {String}			loadingIcon		加载图标(默认 'circle' )
	 * @property {String}			loadmoreText	加载前的提示语(默认 '加载更多' )
	 * @property {String}			loadingText		加载中提示语(默认 '正在加载...' )
	 * @property {String}			nomoreText		没有更多的提示语(默认 '没有更多了' )
	 * @property {Boolean}			isDot			到上一个相邻元素的距离 (默认 false )
	 * @property {String}			iconColor		加载中图标的颜色 (默认 '#b7b7b7' )
	 * @property {String | Number}	marginTop		上边距 (默认 10 )
	 * @property {String | Number}	marginBottom	下边距 (默认 10 )
	 * @property {String | Number}	height			高度,单位px (默认 'auto' )
	 * @property {Boolean}			line			是否显示左边分割线  (默认 false )
	 * @event {Function} loadmore status为loadmore时,点击组件会发出此事件
	 * @example <u-loadmore :status="status" icon-type="iconType" load-text="loadText" />
	 */
	export default {
		name: "u-loadmore",
		mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
		data() {
			return {
				// 粗点
				dotText: "●"
			}
		},
		computed: {
			// 加载的文字显示的样式
			loadTextStyle() {
				return {
					color: this.color,
					fontSize: uni.$u.addUnit(this.fontSize),
					lineHeight: uni.$u.addUnit(this.fontSize),
					backgroundColor: this.bgColor,
				}
			},
			// 显示的提示文字
			showText() {
				let text = '';
				if (this.status == 'loadmore') text = this.loadmoreText
				else if (this.status == 'loading') text = this.loadingText
				else if (this.status == 'nomore' && this.isDot) text = this.dotText;
				else text = this.nomoreText;
				return text;
			}
		},
		methods: {
			loadMore() {
				// 只有在“加载更多”的状态下才发送点击事件,内容不满一屏时无法触发底部上拉事件,所以需要点击来触发
				if (this.status == 'loadmore') this.$emit('loadmore');
			}
		}
	}
</script>

<style lang="scss" scoped>
	@import "../../libs/css/components.scss";

	.u-loadmore {
		@include flex(row);
		align-items: center;
		justify-content: center;
		flex: 1;

		&__content {
			margin: 0 15px;
			@include flex(row);
			align-items: center;
			justify-content: center;

			&__icon-wrap {
				margin-right: 8px;
			}

			&__text {
				font-size: 14px;
				color: $u-content-color;
			}

			&__dot-text {
				font-size: 15px;
				color: $u-tips-color;
			}
		}
	}
</style>