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220 |
1×
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| <template>
<div class="am-uploader">
<div class="am-uploader-content" @click="onClickUploadFile">
<slot></slot>
</div>
<ol class="am-uploader-preview-list">
<li v-for="file in fileList" :key="file.name">
<template v-if="file.status==='uploading'">
<am-icon name="loading" class="am-uploader-spin"></am-icon>
</template>
<template v-if="file.type.indexOf('image')===0">
<img :src="file.url" class="am-uploader-preview">
</template>
<template v-else>
<div class="am-uploader-defaultImage"></div>
</template>
<span class="am-uploader-name" :class="{[file.status]: file.status}">{{file.name}}</span>
<button class="am-uploader-remove" @click="onDeleteFile(file)">X</button>
</li>
</ol>
<div class="temp" ref="temp" style="overflow:hidden;width:0;height:0;"></div>
</div>
</template>
<script>
import AmIcon from "../icon";
import http from "../http";
export default {
name: "amUploader",
props: {
name: {
type: String,
required: true
},
action: {
type: String,
required: true
},
method: {
type: String,
default: "POST"
},
accept: {
type: String,
default: "image/*"
},
sizeLimit: {
type: Number
},
fileList: {
type: Array,
default: () => []
},
parseReponse: {
type: Function,
required: true
}
},
components: { AmIcon },
data() {
return {
url: "about:blank"
};
},
mounted() {},
methods: {
onClickUploadFile() {
let input = this.createInput();
input.addEventListener("change", () => {
this.uploadFiles(input.files);
input.remove();
});
input.click();
},
createInput() {
this.$refs.temp.innerHTML = "";
let input = document.createElement("input");
input.type = "file";
input.accept = this.accept;
input.multiple = true;
this.$refs.temp.appendChild(input);
return input;
},
uploadFiles(rowFiles) {
let newNames = [];
for (let i = 0; i < rowFiles.length; i++) {
let rowFile = rowFiles[i];
let { name, size, type } = rowFile;
let newName = this.generatorName(name);
newNames[i] = newName;
}
if (!this.beforeUploadFiles(rowFiles, newNames)) {
return false;
}
for (let i = 0; i < rowFiles.length; i++) {
let rowFile = rowFiles[i];
let formData = new FormData();
formData.append(this.name, rowFile);
this.doUploadFiles(
formData,
response => {
let url = this.parseReponse(response);
this.afterUploadFiles(newNames[i], url);
},
xhr => {
this.uploadFileError(xhr, newNames[i]);
}
);
}
},
beforeUploadFiles(rowFiles, newNames) {
rowFiles = Array.from(rowFiles);
for (let i = 0; i < rowFiles.length; i++) {
let rowFile = rowFiles[i];
let { size, type } = rowFile;
if (size > this.sizeLimit) {
this.$emit("error", "文件过大了哦！");
return false;
}
}
let tempFiles = rowFiles.map((rowFile, index) => {
let { size, type } = rowFile;
return { name: newNames[index], size, type, status: "uploading" };
});
this.$emit("update:fileList", [...this.fileList, ...tempFiles]);
return true;
},
afterUploadFiles(name, url) {
let file = this.fileList.filter(f => f.name === name)[0];
let index = this.fileList.indexOf(file);
let copyFile = { ...file };
copyFile.url = url;
copyFile.status = "success";
let copyFileList = [...this.fileList];
copyFileList.splice(index, 1, copyFile);
this.$emit("update:fileList", copyFileList);
this.$emit("uploaded");
},
uploadFileError(xhr, newName) {
let file = this.fileList.filter(f => f.name === newName)[0];
let index = this.fileList.indexOf(file);
let copyFile = { ...file };
copyFile.status = "fail";
let copyFileList = [...this.fileList];
copyFileList.splice(index, 1, copyFile);
this.$emit("update:fileList", copyFileList);
let error;
if (xhr.status === 0) {
error = "网络无法连接";
}
this.$emit("error", error);
},
generatorName(name) {
while (this.fileList.filter(n => n.name === name).length > 0) {
let dotIndex = name.lastIndexOf(".");
let nameWithoutExtension = name.substring(0, dotIndex);
let extension = name.substring(dotIndex);
name = nameWithoutExtension + "(1)" + extension;
}
return name;
},
doUploadFiles(formData, success, error) {
http[this.method.toLocaleLowerCase()](this.action, {
data: formData,
success,
error
});
},
onDeleteFile(file) {
let yes = window.confirm("确定删除该文件吗？");
if (yes) {
let copy = [...this.fileList];
let index = copy.indexOf(file);
copy.splice(index, 1);
this.$emit("update:fileList", copy);
}
}
}
};
</script>
<style lang="scss" scoped>
@import "var";
.am-uploader {
&-preview-list {
list-style: none;
> li {
display: flex;
align-items: center;
border: 1px solid darken($gray, 10%);
margin: 8px 0;
}
}
&-defaultImage,
&-preview {
width: 32px;
height: 32px;
margin-right: 8px;
}
&-preview {
border: none;
}
&-name {
margin-right: auto;
&.success {
color: green;
}
&.fail {
color: red;
}
}
&-remove {
width: 32px;
height: 32px;
}
&-spin {
width: 32px;
height: 32px;
@include spin;
}
}
</style> |