feat(module:upload): add directory support (NG-ZORRO#2164)

close NG-ZORRO#2167 
close NG-ZORRO#2154

components/upload/demo/custom-request.md

@@ -0,0 +1,14 @@
+---
+order: 10
+title:
+  zh-CN: 自定义上传
+  en-US: Custom request
+---
+
+## zh-CN
+
+使用 `nzCustomRequest` 改变上传行为。
+
+## en-US
+
+Use `nzCustomRequest` override for the default xhr behavior.

components/upload/demo/custom-request.ts

@@ -0,0 +1,80 @@
+import { Component } from '@angular/core';
+import { HttpRequest, HttpClient, HttpEventType, HttpEvent, HttpResponse } from '@angular/common/http';
+import { NzMessageService, UploadXHRArgs } from 'ng-zorro-antd';
+import { forkJoin } from 'rxjs';
+
+@Component({
+  selector: 'nz-demo-upload-custom-request',
+  template: `
+  <nz-upload
+    nzAction="https://jsonplaceholder.typicode.com/posts/"
+    [nzCustomRequest]="customReq">
+    <button nz-button>
+      <i class="anticon anticon-upload"></i><span>Click to Upload</span>
+    </button>
+  </nz-upload>
+  `
+})
+export class NzDemoUploadCustomRequestComponent {
+
+  constructor(private http: HttpClient, private msg: NzMessageService) {}
+
+  customReq = (item: UploadXHRArgs) => {
+    // 构建一个 FormData 对象，用于存储文件或其他参数
+    const formData = new FormData();
+    // tslint:disable-next-line:no-any
+    formData.append('file', item.file as any);
+    formData.append('id', '1000');
+    const req = new HttpRequest('POST', item.action, formData, {
+      reportProgress : true,
+      withCredentials: true
+    });
+    // 始终返回一个 `Subscription` 对象，nz-upload 会在适当时机自动取消订阅
+    return this.http.request(req).subscribe((event: HttpEvent<{}>) => {
+      if (event.type === HttpEventType.UploadProgress) {
+        if (event.total > 0) {
+          // tslint:disable-next-line:no-any
+          (event as any).percent = event.loaded / event.total * 100;
+        }
+        // 处理上传进度条，必须指定 `percent` 属性来表示进度
+        item.onProgress(event, item.file);
+      } else if (event instanceof HttpResponse) {
+        // 处理成功
+        item.onSuccess(event.body, item.file, event);
+      }
+    }, (err) => {
+      // 处理失败
+      item.onError(err, item.file);
+    });
+  }
+
+  // 一个简单的分片上传
+  customBigReq = (item: UploadXHRArgs) => {
+    const size = item.file.size;
+    const chunkSize = parseInt((size / 3) + '', 10);
+    const maxChunk = Math.ceil(size / chunkSize);
+    const reqs = Array(maxChunk).fill(0).map((v: {}, index: number) => {
+      const start = index * chunkSize;
+      let end = start + chunkSize;
+      if (size - end < 0) {
+        end = size;
+      }
+      const formData = new FormData();
+      formData.append('file', item.file.slice(start, end));
+      formData.append('start', start.toString());
+      formData.append('end', end.toString());
+      formData.append('index', index.toString());
+      const req = new HttpRequest('POST', item.action, formData, {
+        withCredentials: true
+      });
+      return this.http.request(req);
+    });
+    return forkJoin(...reqs).subscribe(resules => {
+      // 处理成功
+      item.onSuccess({}, item.file, event);
+    }, (err) => {
+      // 处理失败
+      item.onError(err, item.file);
+    });
+  }
+}

components/upload/demo/directory.md

@@ -0,0 +1,14 @@
+---
+order: 6
+title:
+  zh-CN: 文件夹上传
+  en-US: Upload directory
+---
+
+## zh-CN
+
+支持上传一个文件夹里的所有文件。
+
+## en-US
+
+You can select and upload a whole directory.

components/upload/demo/directory.ts

@@ -0,0 +1,15 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'nz-demo-upload-directory',
+  template: `
+  <nz-upload
+    nzAction="https://jsonplaceholder.typicode.com/posts/"
+    nzDirectory>
+    <button nz-button>
+      <i class="anticon anticon-upload"></i> Upload Directory
+    </button>
+  </nz-upload>
+  `
+})
+export class NzDemoUploadDirectoryComponent {}

components/upload/demo/picture-style.md

@@ -1,5 +1,5 @@
 ---
-order: 6
+order: 8
 title:
   zh-CN: 图片列表样式
   en-US: Pictures with list style

components/upload/doc/index.en-US.md

@@ -24,6 +24,7 @@ Uploading is the process of publishing information (web pages, text, pictures, v
 | --- | --- | --- | --- |
 | `[nzAccept]` | File types that can be accepted. See [input accept Attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-accept) | string | - |
 | `[nzAction]` | Required. Uploading URL | string | - |
+| `[nzDirectory]` | support upload whole directory ([caniuse](https://caniuse.com/#feat=input-file-directory)) | boolean | false |
 | `[nzBeforeUpload]` | Hook function which will be executed before uploading. Uploading will be stopped with `false` or a Observable. **Warning：this function is not supported in IE9**. NOTICE: Muse be use `=>` to define the method. | (file, fileList) => `boolean|Observable` | - |
 | `[nzCustomRequest]` | override for the default xhr behavior allowing for additional customization and ability to implement your own XMLHttpRequest. NOTICE: Muse be use `=>` to define the method. | `(item) => Subscription` | - |
 | `[nzData]` | Uploading params or function which can return uploading params. NOTICE: Muse be use `=>` to define the method. | `Object|((file: UploadFile) => Object)` | - |

components/upload/doc/index.zh-CN.md

@@ -25,6 +25,7 @@ title: Upload
 | --- | --- | --- | --- |
 | `[nzAccept]` | 接受上传的文件类型, 详见 [input accept Attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-accept) | string | - |
 | `[nzAction]` | 必选参数, 上传的地址 | string | - |
+| `[nzDirectory]` | 支持上传文件夹（[caniuse](https://caniuse.com/#feat=input-file-directory)） | boolean | false |
 | `[nzBeforeUpload]` | 上传文件之前的钩子，参数为上传的文件，若返回 `false` 则停止上传。注意：**IE9** 不支持该方法；注意：务必使用 `=>` 定义处理方法。 | (file, fileList) => `boolean|Observable` | - |
 | `[nzCustomRequest]` | 通过覆盖默认的上传行为，可以自定义自己的上传实现；注意：务必使用 `=>` 定义处理方法。 | `(item) => Subscription` | - |
 | `[nzData]` | 上传所需参数或返回上传参数的方法；注意：务必使用 `=>` 定义处理方法。 | `Object|((file: UploadFile) => Object)` | - |

components/upload/interface.ts

@@ -48,6 +48,7 @@ export interface ZipButtonOptions {
   disabled?: boolean;
   accept?: string | string[];
   action?: string;
+  directory?: boolean;
   beforeUpload?: (file: UploadFile, fileList: UploadFile[]) => boolean | Observable<any>;
   customRequest?: (item: any) => Subscription;
   data?: {} | ((file: UploadFile) => {});

components/upload/nz-upload-btn.component.html

@@ -1,3 +1,6 @@
 <input type="file" #file (change)="onChange($event)"
-  [attr.accept]="options.accept" [multiple]="options.multiple" style="display: none;">
+  [attr.accept]="options.accept"
+  [attr.directory]="options.directory ? 'directory': null"
+  [attr.webkitdirectory]="options.directory ? 'webkitdirectory': null"
+  [multiple]="options.multiple" style="display: none;">
 <ng-content></ng-content>

components/upload/nz-upload-btn.component.ts

@@ -66,11 +66,15 @@ export class NzUploadBtnComponent implements OnInit, OnChanges, OnDestroy {
       e.preventDefault();
       return;
     }
-    const files: File[] = Array.prototype.slice.call(e.dataTransfer.files).filter(
-      (file: File) => this.attrAccept(file, this.options.accept)
-    );
-    if (files.length) {
-      this.uploadFiles(files);
+    if (this.options.directory) {
+      this.traverseFileTree(e.dataTransfer.items);
+    } else {
+      const files: File[] = Array.prototype.slice.call(e.dataTransfer.files).filter(
+        (file: File) => this.attrAccept(file, this.options.accept)
+      );
+      if (files.length) {
+        this.uploadFiles(files);
+      }
     }
 
     e.preventDefault();
@@ -85,6 +89,31 @@ export class NzUploadBtnComponent implements OnInit, OnChanges, OnDestroy {
     hie.value = '';
   }
 
+  // tslint:disable-next-line:no-any
+  private traverseFileTree(files: any): void {
+    // tslint:disable-next-line:no-any
+    const _traverseFileTree = (item: any, path: string) => {
+      if (item.isFile) {
+        item.file((file) => {
+          if (this.attrAccept(file, this.options.accept)) {
+            this.uploadFiles([file]);
+          }
+        });
+      } else if (item.isDirectory) {
+        const dirReader = item.createReader();
+
+        dirReader.readEntries((entries) => {
+          for (const entrieItem of entries) {
+            _traverseFileTree(entrieItem, `${path}${item.name}/`);
+          }
+        });
+      }
+    };
+    for (const file of files) {
+      _traverseFileTree(file.webkitGetAsEntry(), '');
+    }
+  }
+
   private attrAccept(file: File, acceptedFiles: string | string[]): boolean {
     if (file && acceptedFiles) {
       const acceptedFilesArray = Array.isArray(acceptedFiles) ? acceptedFiles : acceptedFiles.split(',');
@@ -133,7 +162,7 @@ export class NzUploadBtnComponent implements OnInit, OnChanges, OnDestroy {
         if (processedFileType === '[object File]' || processedFileType === '[object Blob]') {
           this.attachUid(processedFile);
           this.post(processedFile);
-        } else {
+        } else if (typeof processedFile === 'boolean' && processedFile !== false) {
           this.post(file);
         }
       });

components/upload/nz-upload.component.ts

@@ -16,7 +16,7 @@ import {
 import { of, Observable, Subscription } from 'rxjs';
 import { filter } from 'rxjs/operators';
 
-import { toBoolean, toNumber } from '../core/util/convert';
+import { toBoolean, toNumber, InputBoolean } from '../core/util/convert';
 import { NzI18nService } from '../i18n/nz-i18n.service';
 
 import {
@@ -39,8 +39,6 @@ import { NzUploadBtnComponent } from './nz-upload-btn.component';
 export class NzUploadComponent implements OnInit, OnChanges, OnDestroy {
   private i18n$: Subscription;
   locale: any = {};
-  private inited = false;
-  private progressTimer: any;
   @ViewChild('upload') upload: NzUploadBtnComponent;
 
   // region: fields
@@ -70,6 +68,7 @@ export class NzUploadComponent implements OnInit, OnChanges, OnDestroy {
   @Input() nzFileType: string;
   @Input() nzAccept: string | string[];
   @Input() nzAction: string;
+  @Input() @InputBoolean() nzDirectory: boolean = false;
   @Input() nzBeforeUpload: (file: UploadFile, fileList: UploadFile[]) => boolean | Observable<any>;
   @Input() nzCustomRequest: (item: any) => Subscription;
   @Input() nzData: {} | ((file: UploadFile) => {});
@@ -176,6 +175,7 @@ export class NzUploadComponent implements OnInit, OnChanges, OnDestroy {
       disabled       : this.nzDisabled,
       accept         : this.nzAccept,
       action         : this.nzAction,
+      directory      : this.nzDirectory,
       beforeUpload   : this.nzBeforeUpload,
       customRequest  : this.nzCustomRequest,
       data           : this.nzData,
@@ -240,7 +240,7 @@ export class NzUploadComponent implements OnInit, OnChanges, OnDestroy {
     file.thumbUrl = '';
 
     const reader = new FileReader();
-    reader.onloadend = () => file.thumbUrl = reader.result;
+    reader.onloadend = () => file.thumbUrl = reader.result as string;
     reader.readAsDataURL(file.originFileObj);
   }
 
@@ -361,7 +361,6 @@ export class NzUploadComponent implements OnInit, OnChanges, OnDestroy {
 
   // endregion
   ngOnInit(): void {
-    this.inited = true;
     this.i18n$ = this.i18n.localeChange.subscribe(() => {
       this.locale = this.i18n.getLocaleData('Upload');
       this.cd.detectChanges();