From 7b1b667792b59dbe4645a2ff54a1825f91111af3 Mon Sep 17 00:00:00 2001
From: 07akioni <07akioni2@gmail.com>
Date: Sun, 16 Feb 2020 21:52:38 +0800
Subject: [PATCH] feat(upload): wip

---
 .gitignore                                    |   1 +
 .../components/upload/zhCN/basic.md           |   4 +-
 package.json                                  |   5 +-
 playground/uploadServer.js                    |  15 ++
 src/Progress/src/main.vue                     |  23 ++-
 src/Upload/src/Upload.vue                     | 148 ++++++++++++++++--
 src/Upload/src/UploadProgress.vue             |  61 ++++++++
 .../FadeInHeightExpandTransition.vue          |   7 +-
 styles/Upload.scss                            |  65 ++++++++
 styles/themes/dark/components/Upload.scss     |   5 +
 styles/themes/dark/index.scss                 |   2 +
 styles/themes/light/components/Progress.scss  |   2 +-
 styles/themes/light/components/Upload.scss    |   5 +
 styles/themes/light/index.scss                |   2 +
 styles/themes/transition.scss                 |  10 +-
 15 files changed, 327 insertions(+), 28 deletions(-)
 create mode 100644 playground/uploadServer.js
 create mode 100644 src/Upload/src/UploadProgress.vue
 create mode 100644 styles/themes/dark/components/Upload.scss
 create mode 100644 styles/themes/light/components/Upload.scss

diff --git a/.gitignore b/.gitignore
index eaf2234c1..6c531e03b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ test-size
 test-bundle
 test/unit/coverage
 package-lock.json
+playground/temp
 yarn.lock
 lib
 es
diff --git a/demo/documentation/components/upload/zhCN/basic.md b/demo/documentation/components/upload/zhCN/basic.md
index 5cd4a7da1..ab32406e1 100644
--- a/demo/documentation/components/upload/zhCN/basic.md
+++ b/demo/documentation/components/upload/zhCN/basic.md
@@ -1,4 +1,6 @@
 # 基础用法
 ```html
-<n-upload />
+<n-upload action="http://localhost:3000/upload-test">
+  <n-button>上传文件</n-button>
+</n-upload>
 ```
\ No newline at end of file
diff --git a/package.json b/package.json
index b8be53d65..b71b1d86f 100644
--- a/package.json
+++ b/package.json
@@ -59,6 +59,7 @@
     "babel-preset-env": "^1.7.0",
     "chai": "^4.2.0",
     "copy-webpack-plugin": "^5.1.1",
+    "cors": "^2.8.5",
     "cross-env": "^5.2.1",
     "css-loader": "^2.1.1",
     "cssnano": "^4.1.10",
@@ -66,6 +67,7 @@
     "emoji-unicode": "^1.1.0",
     "eslint": "^6.8.0",
     "eslint-plugin-vue": "^5.0.0",
+    "express": "^4.17.1",
     "extract-text-webpack-plugin": "^4.0.0-beta.0",
     "file-loader": "^3.0.1",
     "glob": "^7.1.6",
@@ -84,9 +86,9 @@
     "marked": "^0.7.0",
     "memory-fs": "^0.4.1",
     "mocha": "^6.2.2",
+    "multer": "^1.4.2",
     "ncp": "^2.0.0",
     "node-sass": "^4.13.1",
-    "sass-loader": "^7.3.1",
     "postcss": "^7.0.26",
     "postcss-cli": "^6.1.3",
     "postcss-loader": "^3.0.0",
@@ -96,6 +98,7 @@
     "rollup": "^1.31.0",
     "rollup-plugin-terser": "^5.2.0",
     "rollup-plugin-vue": "^5.1.6",
+    "sass-loader": "^7.3.1",
     "schema-utils": "^1.0.0",
     "sinon": "^7.5.0",
     "style-loader": "^0.23.1",
diff --git a/playground/uploadServer.js b/playground/uploadServer.js
new file mode 100644
index 000000000..e6d98f867
--- /dev/null
+++ b/playground/uploadServer.js
@@ -0,0 +1,15 @@
+const express = require('express')
+const multer = require('multer')
+const cors = require('cors')
+const path = require('path')
+
+const app = express()
+const upload = multer({ dest: path.resolve(__dirname, 'temp') })
+
+app.options('/upload-test', cors())
+app.post('/upload-test', cors(), upload.any(), function (req, res, next) {
+  console.log(req.files)
+  res.send('very good')
+})
+
+app.listen(3000)
diff --git a/src/Progress/src/main.vue b/src/Progress/src/main.vue
index 896e67d43..a7c2658d4 100644
--- a/src/Progress/src/main.vue
+++ b/src/Progress/src/main.vue
@@ -90,7 +90,9 @@
           <div
             class="n-progress-graph-line-rail"
             :style="{
-              backgroundColor: safeRailColor
+              backgroundColor: safeRailColor,
+              height: styleHeight,
+              borderRadius: styleBorderRadius
             }"
           >
             <div
@@ -100,7 +102,9 @@
               }"
               :style="{
                 maxWidth: fillStyleMaxWidth + '%',
-                backgroundColor: safeColor
+                backgroundColor: safeColor,
+                height: styleHeight,
+                borderRadius: styleBorderRadius
               }"
             >
               <div
@@ -234,7 +238,7 @@ import mdCloseCircle from '../../_icons/md-close-circle'
 import fontawareable from '../../_mixins/fontawarable'
 import withapp from '../../_mixins/withapp'
 import themeable from '../../_mixins/themeable'
-import asthemecontext from '../../_mixins/asthemecontext'
+import formatLength from '../../_utils/css/formatLength'
 
 function circlePath (r, sw, vw = 100) {
   return `m ${vw / 2} ${vw / 2 - r} a ${r} ${r} 0 1 1 0 ${2 * r} a ${r} ${r} 0 1 1 0 -${2 * r}`
@@ -251,7 +255,7 @@ export default {
     mdCheckmarkCircle,
     mdCloseCircle
   },
-  mixins: [withapp, themeable, asthemecontext, fontawareable],
+  mixins: [withapp, themeable, fontawareable],
   props: {
     processing: {
       type: Boolean,
@@ -316,6 +320,10 @@ export default {
     circleGap: {
       type: Number,
       default: 1
+    },
+    height: {
+      type: Number,
+      default: null
     }
   },
   data () {
@@ -325,6 +333,13 @@ export default {
     }
   },
   computed: {
+    styleHeight () {
+      return formatLength(this.height)
+    },
+    styleBorderRadius () {
+      if (this.height) return formatLength(this.height / 2)
+      return null
+    },
     syntheticIndicatorPlacement () {
       return this.indicatorPlacement || this.indicatorPosition
     },
diff --git a/src/Upload/src/Upload.vue b/src/Upload/src/Upload.vue
index f8142c1e6..8b84880d1 100644
--- a/src/Upload/src/Upload.vue
+++ b/src/Upload/src/Upload.vue
@@ -1,33 +1,125 @@
 <template>
   <div
     class="n-upload"
-    @click="handleClick"
+    :class="{
+      [`n-${syntheticTheme}-theme`]: syntheticTheme
+    }"
   >
     <input
       ref="input"
       type="file"
-      class="~n-upload__file-input"
+      class="n-upload__file-input"
       :accept="accept"
       :multiple="multiple"
       @change="handleFileInputChange"
     >
-    <div>
-      <div v-for="(file, index) in fileList" :key="index">
-        {{ file.name }} <n-progress type="line" :show-indicator="false" :percentage="50" style="width: 50%;" /></n-progress>
-      </div>
+    <div class="n-upload__activator" @click="handleActivatorClick">
+      <slot />
+    </div>
+    <div class="n-upload-file-list">
+      <template v-for="(file, index) in fileList">
+        <div
+          v-if="!isFileRemoved(file)"
+          :key="index"
+          class="n-upload-file"
+          :class="{
+            [`n-upload-file--${getProgressStatus(file)}-status`]: true
+          }"
+        >
+          <div class="n-upload-file-info">
+            <div class="n-upload-file-info__name">
+              {{ file.name }}
+            </div>
+            <div class="n-upload-file-info__action">
+              <n-button circle size="tiny">
+                <template v-slot:icon>
+                  <close-outline />
+                </template>
+              </n-button>
+              <n-button circle size="tiny">
+                <template v-slot:icon>
+                  <download-outline />
+                </template>
+              </n-button>
+            </div>
+          </div>
+          <n-upload-progress
+            :show="!isFileUploaded(file)"
+            :percentage="file.percentage"
+            :status="getProgressStatus(file)"
+          />
+        </div>
+      </template>
     </div>
   </div>
 </template>
 
 <script>
-import NProgress from '../../Progress'
+import NButton from '../../Button'
+import closeOutline from '../../_icons/close-outline'
+import downloadOutline from '../../_icons/download-outline'
+import withapp from '../../_mixins/withapp'
+import themeable from '../../_mixins/themeable'
+import NUploadProgress from './UploadProgress'
+
+function XHRHandlers (componentInstance, index) {
+  return {
+    handleXHRLoad (e) {
+      const file = componentInstance.fileList[index]
+      file.status = 'done'
+      file.percentage = 100
+      console.log('!!!done')
+    },
+    handleXHRAbort (e) {
+      componentInstance.fileList[index].status = 'removed'
+      console.log('!!!abort')
+    },
+    handleXHRError (e) {
+      componentInstance.fileList[index].status = 'error'
+      console.log('!!!error')
+    },
+    handleXHRProgress (e) {
+      console.log('!!!progress')
+      if (e.lengthComputable) {
+        const file = componentInstance.fileList[index]
+        const progress = Math.ceil((e.loaded / e.total) * 100)
+        file.percentage = progress
+      }
+    }
+  }
+}
+
+function registerHandler (request, componentInstance, index) {
+  const handlers = XHRHandlers(componentInstance, index)
+  request.onabort = handlers.handleXHRAbort
+  request.onerror = handlers.handleXHRError
+  request.onload = handlers.handleXHRLoad
+  if (request.upload) {
+    request.upload.onprogress = handlers.handleXHRProgress
+  }
+}
+
+function submit (method = 'POST', action, formData, index, componentInstance) {
+  const request = new XMLHttpRequest()
+  registerHandler(request, componentInstance, index)
+  request.open(method, action)
+  request.send(formData)
+}
 
 export default {
   name: 'NUpload',
   components: {
-    NProgress
+    NButton,
+    NUploadProgress,
+    closeOutline,
+    downloadOutline
   },
+  mixins: [ withapp, themeable ],
   props: {
+    name: {
+      type: String,
+      default: 'file'
+    },
     accept: {
       type: [String, Array],
       default: null
@@ -68,19 +160,45 @@ export default {
   data () {
     return {
       fileList: [],
-      formData: new FormData()
+      formDataList: []
     }
   },
   methods: {
-    handleClick () {
-      // this.$refs.input.click()
+    handleActivatorClick () {
+      if (this.disabled) return
+      this.$refs.input.click()
+    },
+    isFileRemoved (file) {
+      return file.status === 'removed'
+    },
+    isFileUploaded (file) {
+      return file.status === 'done'
+    },
+    getProgressStatus (file) {
+      if (file.status === 'done') return 'success'
+      if (file.status === 'error') return 'error'
+      return 'info'
     },
     handleFileInputChange (e) {
-      const currentFileList = this.fileList
-      this.fileList = currentFileList.concat(e.target.files)
+      const fileList = this.fileList
+      const formDataList = this.formDataList
+      const fieldName = this.name
+      const memorizedFileListLength = fileList.length
+      Array.from(e.target.files).forEach((file, index) => {
+        fileList.push({
+          name: file.name,
+          status: 'pending',
+          percentage: 0
+        })
+        const formData = new FormData()
+        formData.append(fieldName, file)
+        formDataList.push(formData)
+        this.submit(formData, memorizedFileListLength + index)
+      })
+      e.target.value = null
     },
-    submit () {
-      // clear the queue of current form data
+    submit (formData, index) {
+      submit(this.method, this.action, formData, index, this)
     }
   }
 }
diff --git a/src/Upload/src/UploadProgress.vue b/src/Upload/src/UploadProgress.vue
new file mode 100644
index 000000000..ecd02371e
--- /dev/null
+++ b/src/Upload/src/UploadProgress.vue
@@ -0,0 +1,61 @@
+<template>
+  <n-fade-in-height-expand-transition>
+    <n-progress
+      v-if="postponedShow"
+      type="line"
+      :show-indicator="false"
+      :percentage="percentage"
+      :status="status"
+      :height="2"
+    />
+  </n-fade-in-height-expand-transition>
+</template>
+
+<script>
+import NFadeInHeightExpandTransition from '../../_transition/FadeInHeightExpandTransition'
+import NProgress from '../../Progress'
+
+export default {
+  name: 'NUploadProgress',
+  components: {
+    NProgress,
+    NFadeInHeightExpandTransition
+  },
+  props: {
+    show: {
+      type: Boolean,
+      default: false
+    },
+    percentage: {
+      type: Number,
+      required: true
+    },
+    status: {
+      type: String,
+      required: true
+    },
+    delay: {
+      type: Number,
+      default: 600
+    }
+  },
+  data () {
+    return {
+      postponedShow: false
+    }
+  },
+  watch: {
+    show (value) {
+      if (value) this.postponedShow = true
+      else {
+        window.setTimeout(() => {
+          this.postponedShow = false
+        }, this.delay)
+      }
+    }
+  },
+  created () {
+    this.postponedShow = this.show
+  }
+}
+</script>
diff --git a/src/_transition/FadeInHeightExpandTransition.vue b/src/_transition/FadeInHeightExpandTransition.vue
index 02ae2a495..25fdc3c4f 100644
--- a/src/_transition/FadeInHeightExpandTransition.vue
+++ b/src/_transition/FadeInHeightExpandTransition.vue
@@ -8,6 +8,10 @@ export default {
     width: {
       type: Boolean,
       default: false
+    },
+    appear: {
+      type: Boolean,
+      default: false
     }
   },
   beforeDestroy () {
@@ -78,7 +82,8 @@ export default {
   render (h) {
     return h('transition', {
       props: {
-        name: this.width ? 'n-fade-in-width-expand-transition' : 'n-fade-in-height-expand-transition'
+        name: this.width ? 'n-fade-in-width-expand-transition' : 'n-fade-in-height-expand-transition',
+        appear: this.appear
       },
       on: {
         beforeLeave: this.handleBeforeLeave,
diff --git a/styles/Upload.scss b/styles/Upload.scss
index 009ccfff5..b55a5ffe9 100644
--- a/styles/Upload.scss
+++ b/styles/Upload.scss
@@ -7,5 +7,70 @@
       height: 0;
       opacity: 0;
     }
+    @include e(activator) {
+      display: inline-block;
+    }
+    @include b(upload-file-list) {
+      margin-top: 8px;
+      line-height: 1.5;
+      @include b(upload-file) {
+        cursor: pointer;
+        padding: 6px 12px 0 12px;
+        transition: background-color .3s $--n-ease-in-out-cubic-bezier;
+        border-radius: 6px;
+        &:hover {
+          background-color: map-get($--upload-file-item-background-color, 'hover');
+          @include b(upload-file-info) {
+            @include e(action) {
+              opacity: 1;
+            }
+          }
+        }
+        @include m(error-status) {
+          @include b(upload-file-info) {
+            @include e(name) {
+              color: $--error-6;
+            }
+          }
+        }
+        @include m(success-status) {
+          @include b(upload-file-info) {
+            @include e(name) {
+              color: $--success-6;
+            }
+          }
+        }
+        @include b(upload-file-info) {
+          position: relative;
+          padding-bottom: 6px;
+          @include e(name) {
+            font-size: 14px;
+            color: $--n-secondary-text-color;
+            transition: color .3s $--n-ease-in-out-cubic-bezier;
+          }
+          @include e(action) {
+            padding-bottom: inherit;
+            position: absolute;
+            right: 0;
+            top: 0;
+            bottom: 0;
+            width: 80px;
+            display: flex;
+            align-items: center;
+            transition: opacity .2s $--n-ease-in-out-cubic-bezier;
+            flex-direction: row-reverse;
+            @include b(button) {
+              &:not(:first-child) {
+                margin-right: 8px;
+              }
+            }
+          }
+        }
+        @include b(progress) {
+          @include fade-in-height-expand-transition;
+          margin-bottom: 6px;
+        }
+      }
+    }
   }
 }
\ No newline at end of file
diff --git a/styles/themes/dark/components/Upload.scss b/styles/themes/dark/components/Upload.scss
new file mode 100644
index 000000000..30e334740
--- /dev/null
+++ b/styles/themes/dark/components/Upload.scss
@@ -0,0 +1,5 @@
+@mixin setup-dark-upload {
+  $--uploadd-file-item-background-color: (
+    'hover': change-color($--primary-6, $alpha: .15)
+  ) !global;
+}
\ No newline at end of file
diff --git a/styles/themes/dark/index.scss b/styles/themes/dark/index.scss
index 64dd2fd15..b0010b85a 100644
--- a/styles/themes/dark/index.scss
+++ b/styles/themes/dark/index.scss
@@ -55,6 +55,7 @@
 @import 'components/Result.scss';
 @import 'components/Tree.scss';
 @import 'components/Typography.scss';
+@import 'components/Upload.scss';
 
 @mixin setup-dark-theme($in-js-env: false) {
   @include setup-dark-colors();
@@ -142,5 +143,6 @@
     @include setup-dark-result;
     @include setup-dark-tree;
     @include setup-dark-typography;
+    @include setup-dark-upload;
   }
 }
diff --git a/styles/themes/light/components/Progress.scss b/styles/themes/light/components/Progress.scss
index 0aa15ff82..fe770f15a 100644
--- a/styles/themes/light/components/Progress.scss
+++ b/styles/themes/light/components/Progress.scss
@@ -1,5 +1,5 @@
 @mixin setup-light-progress {
-  $--progress-rail-color: rgba(0, 0, 0, .1) !global;
+  $--progress-rail-color: $--n-action-panel-color !global;
   $--progress-fill-color: (
     'default': $--info-6,
     'info': $--info-6,
diff --git a/styles/themes/light/components/Upload.scss b/styles/themes/light/components/Upload.scss
new file mode 100644
index 000000000..54438e48d
--- /dev/null
+++ b/styles/themes/light/components/Upload.scss
@@ -0,0 +1,5 @@
+@mixin setup-light-upload {
+  $--upload-file-item-background-color: (
+    'hover': change-color($--primary-6, $alpha: .1)
+  ) !global;
+}
\ No newline at end of file
diff --git a/styles/themes/light/index.scss b/styles/themes/light/index.scss
index 7d56c4168..f76b2a8f6 100644
--- a/styles/themes/light/index.scss
+++ b/styles/themes/light/index.scss
@@ -55,6 +55,7 @@
 @import 'components/Result.scss';
 @import 'components/Tree.scss';
 @import 'components/Typography.scss';
+@import 'components/Upload.scss';
 
 @mixin setup-light-theme($in-js-env: false) {
   @include setup-light-colors();
@@ -141,5 +142,6 @@
     @include setup-light-result;
     @include setup-light-tree;
     @include setup-light-typography;
+    @include setup-light-upload;
   }
 }
diff --git a/styles/themes/transition.scss b/styles/themes/transition.scss
index 1f4db3244..7ecae7ccf 100644
--- a/styles/themes/transition.scss
+++ b/styles/themes/transition.scss
@@ -135,7 +135,7 @@
   }
 }
 
-@mixin fade-in-height-expand-transition ($name: 'fade-in-height-expand', $duration: .3s, $delay: 0s, $original-transition: ()) {
+@mixin fade-in-height-expand-transition ($name: 'fade-in-height-expand', $duration: .3s, $original-transition: (), $leave-delay: 0s) {
   &.#{$namespace}-#{$name}-transition-leave, &.#{$namespace}-#{$name}-transition-enter-to {
     opacity: 1;
   }
@@ -147,10 +147,10 @@
   &.#{$namespace}-#{$name}-transition-leave-active {
     overflow: hidden;
     transition:
-      max-height $duration $--n-ease-in-out-cubic-bezier,
-      opacity $duration $--n-ease-out-cubic-bezier,
-      margin-top $duration $--n-ease-in-out-cubic-bezier,
-      margin-bottom $duration $--n-ease-in-out-cubic-bezier,
+      max-height $duration $--n-ease-in-out-cubic-bezier $leave-delay,
+      opacity $duration $--n-ease-out-cubic-bezier $leave-delay,
+      margin-top $duration $--n-ease-in-out-cubic-bezier $leave-delay,
+      margin-bottom $duration $--n-ease-in-out-cubic-bezier $leave-delay,
       $original-transition;
   }
   &.#{$namespace}-#{$name}-transition-enter-active {