655 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			Vue
		
	
	
	
		
		
			
		
	
	
			655 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			Vue
		
	
	
	
|  | <template> | |||
|  | 	<view class="u-upload" v-if="!disabled"> | |||
|  | 		<view | |||
|  | 			v-if="showUploadList" | |||
|  | 			class="u-list-item u-preview-wrap" | |||
|  | 			v-for="(item, index) in lists" | |||
|  | 			:key="index" | |||
|  | 			:style="{ | |||
|  | 				width: $u.addUnit(width), | |||
|  | 				height: $u.addUnit(height) | |||
|  | 			}" | |||
|  | 		> | |||
|  | 			<view | |||
|  | 				v-if="deletable" | |||
|  | 				class="u-delete-icon" | |||
|  | 				@tap.stop="deleteItem(index)" | |||
|  | 				:style="{ | |||
|  | 					background: delBgColor | |||
|  | 				}" | |||
|  | 			> | |||
|  | 				<u-icon class="u-icon" :name="delIcon" size="20" :color="delColor"></u-icon> | |||
|  | 			</view> | |||
|  | 			<u-line-progress | |||
|  | 				v-if="showProgress && item.progress > 0 && !item.error" | |||
|  | 				:show-percent="false" | |||
|  | 				height="16" | |||
|  | 				class="u-progress" | |||
|  | 				:percent="item.progress" | |||
|  | 			></u-line-progress> | |||
|  | 			<view @tap.stop="retry(index)" v-if="item.error" class="u-error-btn">点击重试</view> | |||
|  | 			<image @tap.stop="doPreviewImage(item.url || item.path, index)" class="u-preview-image" v-if="!item.isImage" :src="item.url || item.path" :mode="imageMode"></image> | |||
|  | 		</view> | |||
|  | 		<slot name="file" :file="lists"></slot> | |||
|  | 		<view style="display: inline-block;" @tap="selectFile" v-if="maxCount > lists.length"> | |||
|  | 			<slot name="addBtn"></slot> | |||
|  | 			<view | |||
|  | 				v-if="!customBtn" | |||
|  | 				class="u-list-item u-add-wrap" | |||
|  | 				hover-class="u-add-wrap__hover" | |||
|  | 				hover-stay-time="150" | |||
|  | 				:style="{ | |||
|  | 					width: $u.addUnit(width), | |||
|  | 					height: $u.addUnit(height) | |||
|  | 				}" | |||
|  | 			> | |||
|  | 				<u-icon name="plus" class="u-add-btn" size="40"></u-icon> | |||
|  | 				<view class="u-add-tips">{{ uploadText }}</view> | |||
|  | 			</view> | |||
|  | 		</view> | |||
|  | 	</view> | |||
|  | </template> | |||
|  | 
 | |||
|  | <script> | |||
|  | /** | |||
|  |  * upload 图片上传 | |||
|  |  * @description 该组件用于上传图片场景 | |||
|  |  * @tutorial https://www.uviewui.com/components/upload.html
 | |||
|  |  * @property {String} action 服务器上传地址 | |||
|  |  * @property {String Number} max-count 最大选择图片的数量(默认99) | |||
|  |  * @property {Boolean} custom-btn 如果需要自定义选择图片的按钮,设置为true(默认false) | |||
|  |  * @property {Boolean} show-progress 是否显示进度条(默认true) | |||
|  |  * @property {Boolean} disabled 是否启用(显示/移仓)组件(默认false) | |||
|  |  * @property {String} image-mode 预览图片等显示模式,可选值为uni的image的mode属性值(默认aspectFill) | |||
|  |  * @property {String} del-icon 右上角删除图标名称,只能为uView内置图标 | |||
|  |  * @property {String} del-bg-color 右上角关闭按钮的背景颜色 | |||
|  |  * @property {String | Number} index 在各个回调事件中的最后一个参数返回,用于区别是哪一个组件的事件 | |||
|  |  * @property {String} del-color 右上角关闭按钮图标的颜色 | |||
|  |  * @property {Object} header 上传携带的头信息,对象形式 | |||
|  |  * @property {Object} form-data 上传额外携带的参数 | |||
|  |  * @property {String} name 上传文件的字段名,供后端获取使用(默认file) | |||
|  |  * @property {Array<String>} size-type original 原图,compressed 压缩图,默认二者都有(默认['original', 'compressed']) | |||
|  |  * @property {Array<String>} source-type 选择图片的来源,album-从相册选图,camera-使用相机,默认二者都有(默认['album', 'camera']) | |||
|  |  * @property {Boolean} preview-full-image	是否可以通过uni.previewImage预览已选择的图片(默认true) | |||
|  |  * @property {Boolean} multiple	是否开启图片多选,部分安卓机型不支持(默认true) | |||
|  |  * @property {Boolean} deletable 是否显示删除图片的按钮(默认true) | |||
|  |  * @property {String Number} max-size 选择单个文件的最大大小,单位B(byte),默认不限制(默认Number.MAX_VALUE) | |||
|  |  * @property {Array<Object>} file-list 默认显示的图片列表,数组元素为对象,必须提供url属性 | |||
|  |  * @property {Boolean} upload-text 选择图片按钮的提示文字(默认“选择图片”) | |||
|  |  * @property {Boolean} auto-upload 选择完图片是否自动上传,见上方说明(默认true) | |||
|  |  * @property {Boolean} show-tips 特殊情况下是否自动提示toast,见上方说明(默认true) | |||
|  |  * @property {Boolean} show-upload-list 是否显示组件内部的图片预览(默认true) | |||
|  |  * @event {Function} on-oversize 图片大小超出最大允许大小 | |||
|  |  * @event {Function} on-preview 全屏预览图片时触发 | |||
|  |  * @event {Function} on-remove 移除图片时触发 | |||
|  |  * @event {Function} on-success 图片上传成功时触发 | |||
|  |  * @event {Function} on-change 图片上传后,无论成功或者失败都会触发 | |||
|  |  * @event {Function} on-error 图片上传失败时触发 | |||
|  |  * @event {Function} on-progress 图片上传过程中的进度变化过程触发 | |||
|  |  * @event {Function} on-uploaded 所有图片上传完毕触发 | |||
|  |  * @event {Function} on-choose-complete 每次选择图片后触发,只是让外部可以得知每次选择后,内部的文件列表 | |||
|  |  * @example <u-upload :action="action" :file-list="fileList" ></u-upload> | |||
|  |  */ | |||
|  | export default { | |||
|  | 	name: 'u-upload', | |||
|  | 	props: { | |||
|  | 		//是否显示组件自带的图片预览功能
 | |||
|  | 		showUploadList: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 后端地址
 | |||
|  | 		action: { | |||
|  | 			type: String, | |||
|  | 			default: '' | |||
|  | 		}, | |||
|  | 		// 最大上传数量
 | |||
|  | 		maxCount: { | |||
|  | 			type: [String, Number], | |||
|  | 			default: 52 | |||
|  | 		}, | |||
|  | 		//  是否显示进度条
 | |||
|  | 		showProgress: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 是否启用
 | |||
|  | 		disabled: { | |||
|  | 			type: Boolean, | |||
|  | 			default: false | |||
|  | 		}, | |||
|  | 		// 预览上传的图片时的裁剪模式,和image组件mode属性一致
 | |||
|  | 		imageMode: { | |||
|  | 			type: String, | |||
|  | 			default: 'aspectFill' | |||
|  | 		}, | |||
|  | 		// 头部信息
 | |||
|  | 		header: { | |||
|  | 			type: Object, | |||
|  | 			default() { | |||
|  | 				return {}; | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 额外携带的参数
 | |||
|  | 		formData: { | |||
|  | 			type: Object, | |||
|  | 			default() { | |||
|  | 				return {}; | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 上传的文件字段名
 | |||
|  | 		name: { | |||
|  | 			type: String, | |||
|  | 			default: 'file' | |||
|  | 		}, | |||
|  | 		// 所选的图片的尺寸, 可选值为original compressed
 | |||
|  | 		sizeType: { | |||
|  | 			type: Array, | |||
|  | 			default() { | |||
|  | 				return ['original', 'compressed']; | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		sourceType: { | |||
|  | 			type: Array, | |||
|  | 			default() { | |||
|  | 				return ['album', 'camera']; | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 是否在点击预览图后展示全屏图片预览
 | |||
|  | 		previewFullImage: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 是否开启图片多选,部分安卓机型不支持
 | |||
|  | 		multiple: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 是否展示删除按钮
 | |||
|  | 		deletable: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 文件大小限制,单位为byte
 | |||
|  | 		maxSize: { | |||
|  | 			type: [String, Number], | |||
|  | 			default: Number.MAX_VALUE | |||
|  | 		}, | |||
|  | 		// 显示已上传的文件列表
 | |||
|  | 		fileList: { | |||
|  | 			type: Array, | |||
|  | 			default() { | |||
|  | 				return []; | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 上传区域的提示文字
 | |||
|  | 		uploadText: { | |||
|  | 			type: String, | |||
|  | 			default: '选择图片' | |||
|  | 		}, | |||
|  | 		// 是否自动上传
 | |||
|  | 		autoUpload: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 是否显示toast消息提示
 | |||
|  | 		showTips: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 是否通过slot自定义传入选择图标的按钮
 | |||
|  | 		customBtn: { | |||
|  | 			type: Boolean, | |||
|  | 			default: false | |||
|  | 		}, | |||
|  | 		// 内部预览图片区域和选择图片按钮的区域宽度
 | |||
|  | 		width: { | |||
|  | 			type: [String, Number], | |||
|  | 			default: 200 | |||
|  | 		}, | |||
|  | 		// 内部预览图片区域和选择图片按钮的区域高度
 | |||
|  | 		height: { | |||
|  | 			type: [String, Number], | |||
|  | 			default: 200 | |||
|  | 		}, | |||
|  | 		// 右上角关闭按钮的背景颜色
 | |||
|  | 		delBgColor: { | |||
|  | 			type: String, | |||
|  | 			default: '#fa3534' | |||
|  | 		}, | |||
|  | 		// 右上角关闭按钮的叉号图标的颜色
 | |||
|  | 		delColor: { | |||
|  | 			type: String, | |||
|  | 			default: '#ffffff' | |||
|  | 		}, | |||
|  | 		// 右上角删除图标名称,只能为uView内置图标
 | |||
|  | 		delIcon: { | |||
|  | 			type: String, | |||
|  | 			default: 'close' | |||
|  | 		}, | |||
|  | 		// 如果上传后的返回值为json字符串,是否自动转json
 | |||
|  | 		toJson: { | |||
|  | 			type: Boolean, | |||
|  | 			default: true | |||
|  | 		}, | |||
|  | 		// 上传前的钩子,每个文件上传前都会执行
 | |||
|  | 		beforeUpload: { | |||
|  | 			type: Function, | |||
|  | 			default: null | |||
|  | 		}, | |||
|  | 		// 移除文件前的钩子
 | |||
|  | 		beforeRemove: { | |||
|  | 			type: Function, | |||
|  | 			default: null | |||
|  | 		}, | |||
|  | 		// 允许上传的图片后缀
 | |||
|  | 		limitType:{ | |||
|  | 			type: Array, | |||
|  | 			default() { | |||
|  | 				// 支付宝小程序真机选择图片的后缀为"image"
 | |||
|  | 				// https://opendocs.alipay.com/mini/api/media-image
 | |||
|  | 				return ['png', 'jpg', 'jpeg', 'webp', 'gif', 'image']; | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 在各个回调事件中的最后一个参数返回,用于区别是哪一个组件的事件
 | |||
|  | 		index: { | |||
|  | 			type: [Number, String], | |||
|  | 			default: '' | |||
|  | 		} | |||
|  | 	}, | |||
|  | 	mounted() {}, | |||
|  | 	data() { | |||
|  | 		return { | |||
|  | 			lists: [], | |||
|  | 			isInCount: true, | |||
|  | 			uploading: false | |||
|  | 		}; | |||
|  | 	}, | |||
|  | 	watch: { | |||
|  | 		fileList: { | |||
|  | 			immediate: true, | |||
|  | 			handler(val) { | |||
|  | 				val.map(value => { | |||
|  | 					// 首先检查内部是否已经添加过这张图片,因为外部绑定了一个对象给fileList的话(对象引用),进行修改外部fileList
 | |||
|  | 					// 时,会触发watch,导致重新把原来的图片再次添加到this.lists
 | |||
|  | 					// 数组的some方法意思是,只要数组元素有任意一个元素条件符合,就返回true,而另一个数组的every方法的意思是数组所有元素都符合条件才返回true
 | |||
|  | 					let tmp = this.lists.some(val => { | |||
|  | 						return val.url == value.url; | |||
|  | 					}) | |||
|  | 					// 如果内部没有这个图片(tmp为false),则添加到内部
 | |||
|  | 					!tmp && this.lists.push({ url: value.url, error: false, progress: 100 }); | |||
|  | 				}); | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 监听lists的变化,发出事件
 | |||
|  | 		lists(n) { | |||
|  | 			this.$emit('on-list-change', n, this.index); | |||
|  | 		} | |||
|  | 	}, | |||
|  | 	methods: { | |||
|  | 		// 清除列表
 | |||
|  | 		clear() { | |||
|  | 			this.lists = []; | |||
|  | 		}, | |||
|  | 		// 重新上传队列中上传失败的所有文件
 | |||
|  | 		reUpload() { | |||
|  | 			this.uploadFile(); | |||
|  | 		}, | |||
|  | 		// 选择图片
 | |||
|  | 		selectFile() { | |||
|  | 			if (this.disabled) return; | |||
|  | 			const { name = '', maxCount, multiple, maxSize, sizeType, lists, camera, compressed, maxDuration, sourceType } = this; | |||
|  | 			let chooseFile = null; | |||
|  | 			const newMaxCount = maxCount - lists.length; | |||
|  | 			// 设置为只选择图片的时候使用 chooseImage 来实现
 | |||
|  | 			chooseFile = new Promise((resolve, reject) => { | |||
|  | 				uni.chooseImage({ | |||
|  | 					count: multiple ? (newMaxCount > 9 ? 9 : newMaxCount) : 1, | |||
|  | 					sourceType: sourceType, | |||
|  | 					sizeType, | |||
|  | 					success: resolve, | |||
|  | 					fail: reject | |||
|  | 				}); | |||
|  | 			}); | |||
|  | 			chooseFile | |||
|  | 				.then(res => { | |||
|  | 					let file = null; | |||
|  | 					let listOldLength = this.lists.length; | |||
|  | 					res.tempFiles.map((val, index) => { | |||
|  | 						// 检查文件后缀是否允许,如果不在this.limitType内,就会返回false
 | |||
|  | 						if(!this.checkFileExt(val)) return ; | |||
|  | 						 | |||
|  | 						// 如果是非多选,index大于等于1或者超出最大限制数量时,不处理
 | |||
|  | 						if (!multiple && index >= 1) return; | |||
|  | 						if (val.size > maxSize) { | |||
|  | 							this.$emit('on-oversize', val, this.lists, this.index); | |||
|  | 							this.showToast('超出允许的文件大小'); | |||
|  | 						} else { | |||
|  | 							if (maxCount <= lists.length) { | |||
|  | 								this.$emit('on-exceed', val, this.lists, this.index); | |||
|  | 								this.showToast('超出最大允许的文件个数'); | |||
|  | 								return; | |||
|  | 							} | |||
|  | 							lists.push({ | |||
|  | 								url: val.path, | |||
|  | 								progress: 0, | |||
|  | 								error: false, | |||
|  | 								file: val | |||
|  | 							}); | |||
|  | 						} | |||
|  | 					}); | |||
|  | 					// 每次图片选择完,抛出一个事件,并将当前内部选择的图片数组抛出去
 | |||
|  | 					this.$emit('on-choose-complete', this.lists, this.index); | |||
|  | 					if (this.autoUpload) this.uploadFile(listOldLength); | |||
|  | 				}) | |||
|  | 				.catch(error => { | |||
|  | 					this.$emit('on-choose-fail', error); | |||
|  | 				}); | |||
|  | 		}, | |||
|  | 		// 提示用户消息
 | |||
|  | 		showToast(message, force = false) { | |||
|  | 			if (this.showTips || force) { | |||
|  | 				uni.showToast({ | |||
|  | 					title: message, | |||
|  | 					icon: 'none' | |||
|  | 				}); | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 该方法供用户通过ref调用,手动上传
 | |||
|  | 		upload() { | |||
|  | 			this.uploadFile(); | |||
|  | 		}, | |||
|  | 		// 对失败的图片重新上传
 | |||
|  | 		retry(index) { | |||
|  | 			this.lists[index].progress = 0; | |||
|  | 			this.lists[index].error = false; | |||
|  | 			this.lists[index].response = null; | |||
|  | 			uni.showLoading({ | |||
|  | 				title: '重新上传' | |||
|  | 			}); | |||
|  | 			this.uploadFile(index); | |||
|  | 		}, | |||
|  | 		// 上传图片
 | |||
|  | 		async uploadFile(index = 0) { | |||
|  | 			if (this.disabled) return; | |||
|  | 			if (this.uploading) return; | |||
|  | 			// 全部上传完成
 | |||
|  | 			if (index >= this.lists.length) { | |||
|  | 				this.$emit('on-uploaded', this.lists, this.index); | |||
|  | 				return; | |||
|  | 			} | |||
|  | 			// 检查是否是已上传或者正在上传中
 | |||
|  | 			if (this.lists[index].progress == 100) { | |||
|  | 				if (this.autoUpload == false) this.uploadFile(index + 1); | |||
|  | 				return; | |||
|  | 			} | |||
|  | 			// 执行before-upload钩子
 | |||
|  | 			if(this.beforeUpload && typeof(this.beforeUpload) === 'function') { | |||
|  | 				// 执行回调,同时传入索引和文件列表当作参数
 | |||
|  | 				// 在微信,支付宝等环境(H5正常),会导致父组件定义的customBack()函数体中的this变成子组件的this
 | |||
|  | 				// 通过bind()方法,绑定父组件的this,让this.customBack()的this为父组件的上下文
 | |||
|  | 				// 因为upload组件可能会被嵌套在其他组件内,比如u-form,这时this.$parent其实为u-form的this,
 | |||
|  | 				// 非页面的this,所以这里需要往上历遍,一直寻找到最顶端的$parent,这里用了this.$u.$parent.call(this)
 | |||
|  | 				// 明白意思即可,无需纠结this.$u.$parent.call(this)的细节
 | |||
|  | 				let beforeResponse = this.beforeUpload.bind(this.$u.$parent.call(this))(index, this.lists); | |||
|  | 				// 判断是否返回了promise
 | |||
|  | 				if (!!beforeResponse && typeof beforeResponse.then === 'function') { | |||
|  | 					await beforeResponse.then(res => { | |||
|  | 						// promise返回成功,不进行动作,继续上传
 | |||
|  | 					}).catch(err => { | |||
|  | 						// 进入catch回调的话,继续下一张
 | |||
|  | 						return this.uploadFile(index + 1); | |||
|  | 					}) | |||
|  | 				} else if(beforeResponse === false) { | |||
|  | 					// 如果返回false,继续下一张图片的上传
 | |||
|  | 					return this.uploadFile(index + 1); | |||
|  | 				} else { | |||
|  | 					// 此处为返回"true"的情形,这里不写代码,就跳过此处,继续执行当前的上传逻辑
 | |||
|  | 				} | |||
|  | 			} | |||
|  | 			// 检查上传地址
 | |||
|  | 			if (!this.action) { | |||
|  | 				this.showToast('请配置上传地址', true); | |||
|  | 				return; | |||
|  | 			} | |||
|  | 			this.lists[index].error = false; | |||
|  | 			this.uploading = true; | |||
|  | 			// 创建上传对象
 | |||
|  | 			const task = uni.uploadFile({ | |||
|  | 				url: this.action, | |||
|  | 				filePath: this.lists[index].url, | |||
|  | 				name: this.name, | |||
|  | 				formData: this.formData, | |||
|  | 				header: this.header, | |||
|  | 				success: res => { | |||
|  | 					// 判断是否json字符串,将其转为json格式
 | |||
|  | 					let data = this.toJson && this.$u.test.jsonString(res.data) ? JSON.parse(res.data) : res.data; | |||
|  | 					if (![200, 201, 204].includes(res.statusCode)) { | |||
|  | 						this.uploadError(index, data); | |||
|  | 					} else { | |||
|  | 						// 上传成功
 | |||
|  | 						this.lists[index].response = data; | |||
|  | 						this.lists[index].progress = 100; | |||
|  | 						this.lists[index].error = false; | |||
|  | 						this.$emit('on-success', data, index, this.lists, this.index); | |||
|  | 					} | |||
|  | 				}, | |||
|  | 				fail: e => { | |||
|  | 					this.uploadError(index, e); | |||
|  | 				}, | |||
|  | 				complete: res => { | |||
|  | 					uni.hideLoading(); | |||
|  | 					this.uploading = false; | |||
|  | 					this.uploadFile(index + 1); | |||
|  | 					this.$emit('on-change', res, index, this.lists, this.index); | |||
|  | 				} | |||
|  | 			}); | |||
|  | 			task.onProgressUpdate(res => { | |||
|  | 				if (res.progress > 0) { | |||
|  | 					this.lists[index].progress = res.progress; | |||
|  | 					this.$emit('on-progress', res, index, this.lists, this.index); | |||
|  | 				} | |||
|  | 			}); | |||
|  | 		}, | |||
|  | 		// 上传失败
 | |||
|  | 		uploadError(index, err) { | |||
|  | 			this.lists[index].progress = 0; | |||
|  | 			this.lists[index].error = true; | |||
|  | 			this.lists[index].response = null; | |||
|  | 			this.$emit('on-error', err, index, this.lists, this.index); | |||
|  | 			this.showToast('上传失败,请重试'); | |||
|  | 		}, | |||
|  | 		// 删除一个图片
 | |||
|  | 		deleteItem(index) { | |||
|  | 			uni.showModal({ | |||
|  | 				// title: '提示',
 | |||
|  | 				content: '您确定要删除此项吗?', | |||
|  | 				success: async (res) => { | |||
|  | 					if (res.confirm) { | |||
|  | 						// 先检查是否有定义before-remove移除前钩子
 | |||
|  | 						// 执行before-remove钩子
 | |||
|  | 						if(this.beforeRemove && typeof(this.beforeRemove) === 'function') { | |||
|  | 							// 此处钩子执行 原理同before-remove参数,见上方注释
 | |||
|  | 							let beforeResponse = this.beforeRemove.bind(this.$u.$parent.call(this))(index, this.lists); | |||
|  | 							// 判断是否返回了promise
 | |||
|  | 							if (!!beforeResponse && typeof beforeResponse.then === 'function') { | |||
|  | 								await beforeResponse.then(res => { | |||
|  | 									// promise返回成功,不进行动作,继续上传
 | |||
|  | 									this.handlerDeleteItem(index); | |||
|  | 								}).catch(err => { | |||
|  | 									// 如果进入promise的reject,终止删除操作
 | |||
|  | 									this.showToast('已终止移除'); | |||
|  | 								}) | |||
|  | 							} else if(beforeResponse === false) { | |||
|  | 								// 返回false,终止删除
 | |||
|  | 								this.showToast('已终止移除'); | |||
|  | 							} else { | |||
|  | 								// 如果返回true,执行删除操作
 | |||
|  | 								this.handlerDeleteItem(index); | |||
|  | 							} | |||
|  | 						} else { | |||
|  | 							// 如果不存在before-remove钩子,
 | |||
|  | 							this.handlerDeleteItem(index); | |||
|  | 						} | |||
|  | 					} | |||
|  | 				} | |||
|  | 			}); | |||
|  | 		}, | |||
|  | 		// 执行移除图片的动作,上方代码只是判断是否可以移除
 | |||
|  | 		handlerDeleteItem(index) { | |||
|  | 			// 如果文件正在上传中,终止上传任务,进度在0 < progress < 100则意味着正在上传
 | |||
|  | 			if (this.lists[index].process < 100 && this.lists[index].process > 0) { | |||
|  | 				typeof this.lists[index].uploadTask != 'undefined' && this.lists[index].uploadTask.abort(); | |||
|  | 			} | |||
|  | 			this.lists.splice(index, 1); | |||
|  | 			this.$forceUpdate(); | |||
|  | 			this.$emit('on-remove', index, this.lists, this.index); | |||
|  | 			this.showToast('移除成功'); | |||
|  | 		}, | |||
|  | 		// 用户通过ref手动的形式,移除一张图片
 | |||
|  | 		remove(index) { | |||
|  | 			// 判断索引的合法范围
 | |||
|  | 			if (index >= 0 && index < this.lists.length) { | |||
|  | 				this.lists.splice(index, 1); | |||
|  | 				this.$emit('on-list-change', this.lists, this.index); | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		// 预览图片
 | |||
|  | 		doPreviewImage(url, index) { | |||
|  | 			if (!this.previewFullImage) return; | |||
|  | 			const images = this.lists.map(item => item.url || item.path); | |||
|  | 			uni.previewImage({ | |||
|  | 				urls: images, | |||
|  | 				current: url, | |||
|  | 				success: () => { | |||
|  | 					this.$emit('on-preview', url, this.lists, this.index); | |||
|  | 				}, | |||
|  | 				fail: () => { | |||
|  | 					uni.showToast({ | |||
|  | 						title: '预览图片失败', | |||
|  | 						icon: 'none' | |||
|  | 					}); | |||
|  | 				} | |||
|  | 			}); | |||
|  | 		}, | |||
|  | 		// 判断文件后缀是否允许
 | |||
|  | 		checkFileExt(file) { | |||
|  | 			// 检查是否在允许的后缀中
 | |||
|  | 			let noArrowExt = false; | |||
|  | 			// 获取后缀名
 | |||
|  | 			let fileExt = ''; | |||
|  | 			const reg = /.+\./; | |||
|  | 			// 如果是H5,需要从name中判断
 | |||
|  | 			// #ifdef H5
 | |||
|  | 			fileExt = file.name.replace(reg, "").toLowerCase(); | |||
|  | 			// #endif
 | |||
|  | 			// 非H5,需要从path中读取后缀
 | |||
|  | 			// #ifndef H5
 | |||
|  | 			fileExt = file.path.replace(reg, "").toLowerCase(); | |||
|  | 			// #endif
 | |||
|  | 			// 使用数组的some方法,只要符合limitType中的一个,就返回true
 | |||
|  | 			noArrowExt = this.limitType.some(ext => { | |||
|  | 				// 转为小写
 | |||
|  | 				return ext.toLowerCase() === fileExt; | |||
|  | 			}) | |||
|  | 			if(!noArrowExt) this.showToast(`不允许选择${fileExt}格式的文件`); | |||
|  | 			return noArrowExt; | |||
|  | 		} | |||
|  | 	} | |||
|  | }; | |||
|  | </script> | |||
|  | 
 | |||
|  | <style lang="scss" scoped> | |||
|  | @import '../../libs/css/style.components.scss'; | |||
|  | 
 | |||
|  | .u-upload { | |||
|  | 	@include vue-flex; | |||
|  | 	flex-wrap: wrap; | |||
|  | 	align-items: center; | |||
|  | } | |||
|  | 
 | |||
|  | .u-list-item { | |||
|  | 	width: 200rpx; | |||
|  | 	height: 200rpx; | |||
|  | 	overflow: hidden; | |||
|  | 	margin: 10rpx; | |||
|  | 	background: rgb(244, 245, 246); | |||
|  | 	position: relative; | |||
|  | 	border-radius: 10rpx; | |||
|  | 	/* #ifndef APP-NVUE */ | |||
|  | 	display: flex; | |||
|  | 	/* #endif */ | |||
|  | 	align-items: center; | |||
|  | 	justify-content: center; | |||
|  | } | |||
|  | 
 | |||
|  | .u-preview-wrap { | |||
|  | 	border: 1px solid rgb(235, 236, 238); | |||
|  | } | |||
|  | 
 | |||
|  | .u-add-wrap { | |||
|  | 	flex-direction: column; | |||
|  | 	color: $u-content-color; | |||
|  | 	font-size: 26rpx; | |||
|  | } | |||
|  | 
 | |||
|  | .u-add-tips { | |||
|  | 	margin-top: 20rpx; | |||
|  | 	line-height: 40rpx; | |||
|  | } | |||
|  | 
 | |||
|  | .u-add-wrap__hover { | |||
|  | 	background-color: rgb(235, 236, 238); | |||
|  | } | |||
|  | 
 | |||
|  | .u-preview-image { | |||
|  | 	display: block; | |||
|  | 	width: 100%; | |||
|  | 	height: 100%; | |||
|  | 	border-radius: 10rpx; | |||
|  | } | |||
|  | 
 | |||
|  | .u-delete-icon { | |||
|  | 	position: absolute; | |||
|  | 	top: 10rpx; | |||
|  | 	right: 10rpx; | |||
|  | 	z-index: 10; | |||
|  | 	background-color: $u-type-error; | |||
|  | 	border-radius: 100rpx; | |||
|  | 	width: 44rpx; | |||
|  | 	height: 44rpx; | |||
|  | 	@include vue-flex; | |||
|  | 	align-items: center; | |||
|  | 	justify-content: center; | |||
|  | } | |||
|  | 
 | |||
|  | .u-icon { | |||
|  | 	@include vue-flex; | |||
|  | 	align-items: center; | |||
|  | 	justify-content: center; | |||
|  | } | |||
|  | 
 | |||
|  | .u-progress { | |||
|  | 	position: absolute; | |||
|  | 	bottom: 10rpx; | |||
|  | 	left: 8rpx; | |||
|  | 	right: 8rpx; | |||
|  | 	z-index: 9; | |||
|  | 	width: auto; | |||
|  | } | |||
|  | 
 | |||
|  | .u-error-btn { | |||
|  | 	color: #ffffff; | |||
|  | 	background-color: $u-type-error; | |||
|  | 	font-size: 20rpx; | |||
|  | 	padding: 4px 0; | |||
|  | 	text-align: center; | |||
|  | 	position: absolute; | |||
|  | 	bottom: 0; | |||
|  | 	left: 0; | |||
|  | 	right: 0; | |||
|  | 	z-index: 9; | |||
|  | 	line-height: 1; | |||
|  | } | |||
|  | </style> |