256 lines
		
	
	
		
			6.9 KiB
		
	
	
	
		
			Python
		
	
	
	
			
		
		
	
	
			256 lines
		
	
	
		
			6.9 KiB
		
	
	
	
		
			Python
		
	
	
	
| <template>
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| 	<view class="">
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| 		<movable-area class="u-swipe-action" :style="{ backgroundColor: bgColor }">
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| 			<movable-view
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| 				class="u-swipe-view"
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| 				@change="change"
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| 				@touchend="touchend"
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| 				@touchstart="touchstart"
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| 				direction="horizontal"
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| 				:disabled="disabled"
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| 				:x="moveX"
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| 				:style="{
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| 					width: movableViewWidth ? movableViewWidth : '100%'
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| 				}"
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| 			>
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| 				<view
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| 					class="u-swipe-content"
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| 					@tap.stop="contentClick"
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| 				>
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| 					<slot></slot>
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| 				</view>
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| 				<view class="u-swipe-del" v-if="showBtn" @tap.stop="btnClick(index)" :style="[btnStyle(item.style)]" v-for="(item, index) in options" :key="index">
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| 					<view class="u-btn-text">{{ item.text }}</view>
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| 				</view>
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| 			</movable-view>
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| 		</movable-area>
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| 	</view>
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| </template>
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| 
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| <script>
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| /**
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|  * swipeAction 左滑单元格
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|  * @description 该组件一般用于左滑唤出操作菜单的场景,用的最多的是左滑删除操作。
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|  * @tutorial https://www.uviewui.com/components/swipeAction.html
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|  * @property {String} bg-color 整个组件背景颜色(默认#ffffff)
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|  * @property {Array} options 数组形式,可以配置背景颜色和文字
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|  * @property {String Number} index 标识符,点击时候用于区分点击了哪一个,用v-for循环时的index即可
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|  * @property {String Number} btn-width 按钮宽度,单位rpx(默认180)
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|  * @property {Boolean} disabled 是否禁止某个swipeAction滑动(默认false)
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|  * @property {Boolean} show 打开或者关闭某个组件(默认false)
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|  * @event {Function} click 点击组件时触发
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|  * @event {Function} close 组件触发关闭状态时
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|  * @event {Function} content-click 点击内容时触发
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|  * @event {Function} open 组件触发打开状态时
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|  * @example <u-swipe-action btn-text="收藏">...</u-swipe-action>
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|  */
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| export default {
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| 	name: 'u-swipe-action',
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| 	props: {
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| 		// index值,用于得知点击删除的是哪个按钮
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| 		index: {
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| 			type: [Number, String],
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| 			default: ''
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| 		},
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| 		// 滑动按钮的宽度,单位为rpx
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| 		btnWidth: {
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| 			type: [String, Number],
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| 			default: 180
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| 		},
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| 		// 是否禁止某个action滑动
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| 		disabled: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 打开或者关闭组件
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| 		show: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 组件背景颜色
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| 		bgColor: {
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| 			type: String,
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| 			default: '#ffffff'
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| 		},
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| 		// 是否使手机发生短促震动,目前只在iOS的微信小程序有效(2020-05-06)
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| 		vibrateShort: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 按钮操作参数
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| 		options: {
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| 			type: Array,
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| 			default() {
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| 				return [];
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| 			}
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| 		}
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| 	},
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| 	watch: {
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| 		show: {
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| 			immediate: true,
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| 			handler(nVal, oVal) {
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| 				if (nVal) {
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| 					this.open();
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| 				} else {
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| 					this.close();
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| 				}
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| 			}
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| 		}
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| 	},
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| 	data() {
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| 		return {
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| 			moveX: 0, // movable-view元素在x轴上需要移动的目标移动距离,用于展开或收起滑动的按钮
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| 			scrollX: 0, // movable-view移动过程中产生的change事件中的x轴移动值
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| 			status: false, // 滑动的状态,表示当前是展开还是关闭按钮的状态
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| 			movableAreaWidth: 0, // 滑动区域
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| 			elId: this.$u.guid(), // id,用于通知另外组件关闭时的识别
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| 			showBtn: false, // 刚开始渲染视图时不显示右边的按钮,避免视图闪动
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| 		};
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| 	},
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| 	computed: {
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| 		movableViewWidth() {
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| 			return this.movableAreaWidth + this.allBtnWidth + 'px';
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| 		},
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| 		innerBtnWidth() {
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| 			return uni.upx2px(this.btnWidth);
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| 		},
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| 		allBtnWidth() {
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| 			return uni.upx2px(this.btnWidth) * this.options.length;
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| 		},
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| 		btnStyle() {
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| 			return style => {
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| 				let css = {};
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| 				style.width = this.btnWidth + 'rpx';
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| 				return style;
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| 			};
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| 		}
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| 	},
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| 	mounted() {
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| 		this.getActionRect();
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| 	},
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| 	methods: {
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| 		// 点击按钮
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| 		btnClick(index) {
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| 			this.status = false;
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| 			// this.index为点击的几个组件,index为点击某个组件的第几个按钮(options数组的索引)
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| 			this.$emit('click', this.index, index);
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| 		},
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| 		// movable-view元素移动事件
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| 		change(e) {
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| 			this.scrollX = e.detail.x;
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| 		},
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| 		// 关闭按钮状态
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| 		close() {
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| 			this.moveX = 0;
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| 			this.status = false;
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| 		},
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| 		// 打开按钮的状态
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| 		open() {
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| 			if (this.disabled) return;
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| 			this.moveX = -this.allBtnWidth;
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| 			this.status = true;
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| 		},
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| 		// 用户手指离开movable-view元素,停止触摸
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| 		touchend() {
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| 			this.moveX = this.scrollX;
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| 			// 停止触摸时候,判断当前是展开还是关闭状态
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| 			// 关闭状态
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| 			// 这一步很重要,需要先给this.moveX一个变化的随机值,否则因为前后设置的为同一个值
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| 			// props单向数据流的原因,导致movable-view元素不会发生变化,切记,详见文档:
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| 			// https://uniapp.dcloud.io/use?id=%e5%b8%b8%e8%a7%81%e9%97%ae%e9%a2%98
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| 			this.$nextTick(function() {
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| 				if (this.status == false) {
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| 					// 关闭状态左滑,产生的x轴位移为负值,也就是说滑动的距离大于按钮的四分之一宽度,自动展开按钮
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| 					if (this.scrollX <= -this.allBtnWidth / 4) {
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| 						this.moveX = -this.allBtnWidth; // 按钮宽度的负值,即为展开状态movable-view元素左滑的距离
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| 						this.status = true; // 标志当前为展开状态
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| 						this.emitOpenEvent();
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| 						// 产生震动效果
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| 						if (this.vibrateShort) uni.vibrateShort();
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| 					} else {
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| 						this.moveX = 0; // 如果距离没有按钮宽度的四分之一,自动收起
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| 						this.status = false;
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| 						this.emitCloseEvent();
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| 					}
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| 				} else {
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| 					// 如果在打开的状态下,右滑动的距离X轴偏移超过按钮的四分之一(负值反过来的四分之三),自动收起按钮
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| 					if (this.scrollX > (-this.allBtnWidth * 3) / 4) {
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| 						this.moveX = 0;
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| 						this.$nextTick(() => {
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| 							this.moveX = 101;
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| 						});
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| 						this.status = false;
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| 						this.emitCloseEvent();
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| 					} else {
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| 						this.moveX = -this.allBtnWidth;
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| 						this.status = true;
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| 						this.emitOpenEvent();
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| 					}
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| 				}
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| 			});
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| 		},
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| 		emitOpenEvent() {
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| 			this.$emit('open', this.index);
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| 		},
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| 		emitCloseEvent() {
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| 			this.$emit('close', this.index);
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| 		},
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| 		// 开始触摸
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| 		touchstart() {},
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| 		getActionRect() {
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| 			this.$uGetRect('.u-swipe-action').then(res => {
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| 				this.movableAreaWidth = res.width;
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| 				// 等视图更新完后,再显示右边的可滑动按钮,防止这些按钮会"闪一下"
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| 				this.$nextTick(() => {
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| 					this.showBtn = true;
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| 				})
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| 			});
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| 		},
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| 		// 点击内容触发事件
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| 		contentClick() {
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| 			// 点击内容时,如果当前为打开状态,收起组件
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| 			if (this.status == true) {
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| 				this.status = 'close';
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| 				this.moveX = 0;
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| 			}
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| 			this.$emit('content-click', this.index);
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| 		}
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| 	}
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| };
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| </script>
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| 
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| <style scoped lang="scss">
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| @import "../../libs/css/style.components.scss";
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| 	
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| .u-swipe-action {
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| 	width: auto;
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| 	height: initial;
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| 	position: relative;
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| 	overflow: hidden;
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| }
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| 
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| .u-swipe-view {
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| 	@include vue-flex;
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| 	height: initial;
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| 	position: relative;
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| 	/* 这一句很关键,覆盖默认的绝对定位 */
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| }
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| 
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| .u-swipe-content {
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| 	flex: 1;
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| }
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| 
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| .u-swipe-del {
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| 	position: relative;
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| 	font-size: 30rpx;
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| 	color: #ffffff;
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| }
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| 
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| .u-btn-text {
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| 	position: absolute;
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| 	top: 50%;
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| 	left: 50%;
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| 	transform: translate(-50%, -50%);
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| }
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| </style>
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