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* @Description: 对上传文件组件进行封装\r\n * @Author: kcz\r\n * @Date: 2020-03-17 12:53:50\r\n * @LastEditors: kcz\r\n * @LastEditTime: 2022-10-26 21:14:12\r\n -->\r\n<template>\r\n  <div :style=\"{ width: record.options.width }\">\r\n    <Upload\r\n      v-if=\"!record.options.drag\"\r\n      :disabled=\"record.options.disabled || parentDisabled\"\r\n      :name=\"config.uploadFileName || record.options.fileName\"\r\n      :headers=\"config.uploadFileHeaders || record.options.headers\"\r\n      :data=\"config.uploadFileData || optionsData\"\r\n      :action=\"config.uploadFile || record.options.action\"\r\n      :multiple=\"record.options.multiple\"\r\n      :fileList=\"fileList\"\r\n      @preview=\"handlePreview\"\r\n      @change=\"handleChange\"\r\n      :remove=\"remove\"\r\n      :beforeUpload=\"beforeUpload\"\r\n    >\r\n      <Button\r\n        v-if=\"fileList.length < record.options.limit\"\r\n        :disabled=\"record.options.disabled || parentDisabled\"\r\n      >\r\n        <a-icon type=\"upload\" /> {{ record.options.placeholder }}\r\n      </Button>\r\n    </Upload>\r\n    <UploadDragger\r\n      v-else\r\n      :class=\"{ 'hide-upload-drag': !(fileList.length < record.options.limit) }\"\r\n      :disabled=\"record.options.disabled || parentDisabled\"\r\n      :name=\"config.uploadFileName || record.options.fileName\"\r\n      :headers=\"config.uploadFileHeaders || record.options.headers\"\r\n      :data=\"config.uploadFileData || optionsData\"\r\n      :action=\"config.uploadFile || record.options.action\"\r\n      :multiple=\"record.options.multiple\"\r\n      :fileList=\"fileList\"\r\n      @preview=\"handlePreview\"\r\n      @change=\"handleChange\"\r\n      :remove=\"remove\"\r\n      :beforeUpload=\"beforeUpload\"\r\n    >\r\n      <p class=\"ant-upload-drag-icon\">\r\n        <a-icon type=\"cloud-upload\" />\r\n      </p>\r\n      <p class=\"ant-upload-text\">单击或拖动文件到此区域</p>\r\n    </UploadDragger>\r\n  </div>\r\n</template>\r\n<script>\r\n/*\r\n * author kcz\r\n * date 2019-12-31\r\n * description 上传文件组件\r\n */\r\nimport { message } from \"ant-design-vue\";\r\nimport { pluginManager } from \"../../utils/index\";\r\n\r\nconst Upload = pluginManager.getComponent(\"upload\");\r\nconst UploadDragger = pluginManager.getComponent(\"uploadDragger\");\r\nconst Button = pluginManager.getComponent(\"aButton\").component;\r\n\r\nexport default {\r\n  name: \"KUploadFile\",\r\n  // eslint-disable-next-line vue/require-prop-types\r\n  props: [\"record\", \"value\", \"config\", \"parentDisabled\", \"dynamicData\"],\r\n  components: {\r\n    Upload: Upload.component,\r\n    UploadDragger: UploadDragger.component,\r\n    Button\r\n  },\r\n  data() {\r\n    return {\r\n      fileList: []\r\n    };\r\n  },\r\n  watch: {\r\n    value: {\r\n      // value 需要深度监听及默认先执行handler函数\r\n      handler(val) {\r\n        if (val) {\r\n          this.setFileList();\r\n        }\r\n      },\r\n      immediate: true,\r\n      deep: true\r\n    }\r\n  },\r\n\r\n  computed: {\r\n    optionsData() {\r\n      try {\r\n        return JSON.parse(this.record.options.data);\r\n      } catch (err) {\r\n        console.error(err);\r\n        return {};\r\n      }\r\n    }\r\n  },\r\n  methods: {\r\n    setFileList() {\r\n      // 当传入value改变时，fileList也要改变\r\n      // 如果传入的值为字符串，则转成json\r\n      if (typeof this.value === \"string\") {\r\n        this.fileList = JSON.parse(this.value);\r\n        // 将转好的json覆盖组件默认值的字符串\r\n        this.handleSelectChange();\r\n      } else {\r\n        this.fileList = this.value;\r\n      }\r\n    },\r\n    handleSelectChange() {\r\n      setTimeout(() => {\r\n        const arr = this.fileList.map(item => {\r\n          if (typeof item.response !== \"undefined\") {\r\n            const res = item.response;\r\n            return {\r\n              type: \"file\",\r\n              name: item.name,\r\n              status: item.status,\r\n              uid: res.data.fileId || Date.now(),\r\n              url: res.data.url || \"\"\r\n            };\r\n          } else {\r\n            return {\r\n              type: \"file\",\r\n              name: item.name,\r\n              status: item.status,\r\n              uid: item.uid,\r\n              url: item.url || \"\"\r\n            };\r\n          }\r\n        });\r\n\r\n        this.$emit(\"change\", arr);\r\n        this.$emit(\"input\", arr);\r\n      }, 10);\r\n    },\r\n    handlePreview(file) {\r\n      // 下载文件\r\n      const downloadWay = this.record.options.downloadWay;\r\n      const dynamicFun = this.record.options.dynamicFun;\r\n      if (downloadWay === \"a\") {\r\n        // 使用a标签下载\r\n        const a = document.createElement(\"a\");\r\n        a.href = file.url || file.thumbUrl;\r\n        a.download = file.name;\r\n        a.click();\r\n      } else if (downloadWay === \"ajax\") {\r\n        // 使用ajax获取文件blob，并保持到本地\r\n        this.getBlob(file.url || file.thumbUrl).then(blob => {\r\n          this.saveAs(blob, file.name);\r\n        });\r\n      } else if (downloadWay === \"dynamic\") {\r\n        // 触发动态函数\r\n        this.dynamicData[dynamicFun](file);\r\n      }\r\n    },\r\n    /**\r\n     * 获取 blob\r\n     * url 目标文件地址\r\n     */\r\n    getBlob(url) {\r\n      return new Promise(resolve => {\r\n        const xhr = new XMLHttpRequest();\r\n\r\n        xhr.open(\"GET\", url, true);\r\n        xhr.responseType = \"blob\";\r\n        xhr.onload = () => {\r\n          if (xhr.status === 200) {\r\n            resolve(xhr.response);\r\n          }\r\n        };\r\n\r\n        xhr.send();\r\n      });\r\n    },\r\n    /**\r\n     * 保存 blob\r\n     * filename 想要保存的文件名称\r\n     */\r\n    saveAs(blob, filename) {\r\n      if (window.navigator.msSaveOrOpenBlob) {\r\n        navigator.msSaveBlob(blob, filename);\r\n      } else {\r\n        const link = document.createElement(\"a\");\r\n        const body = document.querySelector(\"body\");\r\n        link.href = window.URL.createObjectURL(blob);\r\n        link.download = filename;\r\n\r\n        // fix Firefox\r\n        link.style.display = \"none\";\r\n        body.appendChild(link);\r\n\r\n        link.click();\r\n        body.removeChild(link);\r\n\r\n        window.URL.revokeObjectURL(link.href);\r\n      }\r\n    },\r\n    remove() {\r\n      this.handleSelectChange();\r\n    },\r\n    beforeUpload(e, files) {\r\n      if (files.length + this.fileList.length > this.record.options.limit) {\r\n        message.warning(`最大上传数量为${this.record.options.limit}`);\r\n        files.splice(this.record.options.limit - this.fileList.length);\r\n      }\r\n    },\r\n    handleChange(info) {\r\n      this.fileList = info.fileList;\r\n      if (info.file.status === \"done\") {\r\n        const res = info.file.response;\r\n        if (res.code === 0) {\r\n          this.handleSelectChange();\r\n        } else {\r\n          this.fileList.pop();\r\n          message.error(`文件上传失败`);\r\n        }\r\n      } else if (info.file.status === \"error\") {\r\n        message.error(`文件上传失败`);\r\n      }\r\n    }\r\n  }\r\n};\r\n</script>\r\n"]}]}