- Update Travis configuration;

.travis.yml

@@ -1,11 +1,13 @@
 language: node_js
 node_js:
-  - "6"
+  - "10.15.0"
+
+sudo: required
+services:
+  - xvfb
 
 before_install:
-  - export CHROME_BIN=chromium-browser
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
+  - google-chrome-stable --headless --disable-gpu --remote-debugging-port=9222 http://localhost &
 
 script:
   - npm run pretest
@@ -15,6 +17,7 @@ after_success:
   - ./node_modules/.bin/codecov
 
 addons:
+  chrome: stable
   firefox: "latest"
   apt:
     sources:

README.md

@@ -67,8 +67,7 @@ Easy to use Angular2 directives for files upload ([demo](http://valor-software.g
   5. `formatDataFunction` - Function to modify the request body. 'DisableMultipart' must be 'true' for this function to be called.
   6. `formatDataFunctionIsAsync` - Informs if the function sent in 'formatDataFunction' is asynchronous. Defaults to false.
   7. `parametersBeforeFiles` - States if additional parameters should be appended before or after the file. Defaults to false.
-  8. `uploadFilesInSingleRequest` - If 'true', all files in the queue will be uploaded using one multipart request. Defaults to false. Notice this cannot be combined with 'disableMultipart' is 'true'. 
-  
+
 ### Events
 
   - `fileOver` - it fires during 'over' and 'out' events for Drop Area; returns `boolean`: `true` if file is over Drop Area, `false` in case of out.

demo/src/app/components/file-upload/simple-demo.ts

@@ -18,9 +18,8 @@ export class SimpleDemoComponent {
   constructor (){
     this.uploader = new FileUploader({
       url: URL,
-      disableMultipart: false, // 'DisableMultipart' must be 'true' for formatDataFunction to be called.  
-      uploadFilesInSingleRequest: true,    
-      formatDataFunctionIsAsync: false,
+      disableMultipart: true, // 'DisableMultipart' must be 'true' for formatDataFunction to be called.
+      formatDataFunctionIsAsync: true,
       formatDataFunction: async (item) => {
         return new Promise( (resolve, reject) => {
           resolve({

karma.conf.js

@@ -48,6 +48,7 @@ module.exports = function (config) {
 
   if (process.env.TRAVIS) {
     configuration.browsers = ['Chrome_travis_ci'];
+    configuration.singleRun = true;
   }
 
   if (process.env.SAUCE) {

package.json

@@ -7,9 +7,7 @@
     "lite-server": "lite-server -c demo/bs-config.json",
     "demo.serve": "run-s build link demo.build lite-server",
     "demo.gh-pages": "run-s build demo.build demo.deploy",
-    "demo.build": "ng build",
-    "demo.build.watch": "ng build --watch",
-    "demo.buildOld": "ng build -prod --aot",
+    "demo.build": "ng build -prod --aot",
     "demo.deploy": "gh-pages -d demo/dist",
     "link": "ngm link -p src --here",
     "lint": "exit 0",
@@ -86,8 +84,8 @@
     "jasmine-core": "2.5.2",
     "jasmine-data-provider": "2.2.0",
     "jasmine-spec-reporter": "3.2.0",
-    "karma": "1.4.0",
-    "karma-chrome-launcher": "^2.0.0",
+    "karma": "^4.2.0",
+    "karma-chrome-launcher": "^3.1.0",
     "karma-cli": "^1.0.1",
     "karma-coverage-istanbul-reporter": "^1.3.0",
     "karma-jasmine": "^1.0.2",

src/file-upload/file-drop.directive.ts

@@ -1,12 +1,14 @@
-import { Directive, EventEmitter, ElementRef, HostListener, Input, Output } from '@angular/core';
+import { Directive, ElementRef, EventEmitter, HostListener, Input, Output } from '@angular/core';
 
-import { FileUploader, FileUploaderOptions } from './file-uploader.class';
+import { FileUploader, FileUploaderOptions, FilterFunction } from './file-uploader.class';
 
 @Directive({ selector: '[ng2FileDrop]' })
 export class FileDropDirective {
   @Input() public uploader: FileUploader;
+  // tslint:disable-next-line:no-input-rename
+  @Input('ng2FileFilter') public filter: FilterFunction['fn'];
   @Output() public fileOver: EventEmitter<any> = new EventEmitter();
-  @Output() public onFileDrop: EventEmitter<File[]> = new EventEmitter<File[]>();
+  @Output() public onFileDrop: EventEmitter<FileList> = new EventEmitter<FileList>();
 
   protected element: ElementRef;
 
@@ -22,7 +24,7 @@ export class FileDropDirective {
     return {};
   }
 
-  @HostListener('drop', [ '$event' ])
+  @HostListener('drop', ['$event'])
   public onDrop(event: any): void {
     let transfer = this._getTransfer(event);
     if (!transfer) {
@@ -30,14 +32,17 @@ export class FileDropDirective {
     }
 
     let options = this.getOptions();
-    let filters = this.getFilters();
+    let filters = typeof this.filter === 'function' ? [{
+      name: 'ng2FileDropDirectiveFilter',
+      fn: this.filter
+    }, ...options.filters] : this.getFilters();
     this._preventAndStop(event);
     this.uploader.addToQueue(transfer.files, options, filters);
     this.fileOver.emit(false);
     this.onFileDrop.emit(transfer.files);
   }
 
-  @HostListener('dragover', [ '$event' ])
+  @HostListener('dragover', ['$event'])
   public onDragOver(event: any): void {
     let transfer = this._getTransfer(event);
     if (!this._haveFiles(transfer.types)) {
@@ -49,10 +54,10 @@ export class FileDropDirective {
     this.fileOver.emit(true);
   }
 
-  @HostListener('dragleave', [ '$event' ])
+  @HostListener('dragleave', ['$event'])
   public onDragLeave(event: any): any {
     if ((this as any).element) {
-      if (event.currentTarget === (this as any).element[ 0 ]) {
+      if (event.currentTarget === (this as any).element[0]) {
         return;
       }
     }
@@ -61,11 +66,11 @@ export class FileDropDirective {
     this.fileOver.emit(false);
   }
 
-  protected _getTransfer(event: any): any {
+  protected _getTransfer(event: any): DragEvent['dataTransfer'] {
     return event.dataTransfer ? event.dataTransfer : event.originalEvent.dataTransfer; // jQuery fix;
   }
 
-  protected _preventAndStop(event: any): any {
+  protected _preventAndStop(event: Event): any {
     event.preventDefault();
     event.stopPropagation();
   }

src/file-upload/file-select.directive.ts

@@ -1,10 +1,12 @@
-import { Directive, EventEmitter, ElementRef, Input, HostListener, Output } from '@angular/core';
+import { Directive, ElementRef, EventEmitter, HostListener, Input, Output } from '@angular/core';
 
-import { FileUploader } from './file-uploader.class';
+import { FileUploader, FilterFunction } from './file-uploader.class';
 
 @Directive({ selector: '[ng2FileSelect]' })
 export class FileSelectDirective {
   @Input() public uploader: FileUploader;
+  // tslint:disable-next-line:no-input-rename
+  @Input('ng2FileFilter') public filter: FilterFunction['fn'];
   @Output() public onFileSelected: EventEmitter<File[]> = new EventEmitter<File[]>();
 
   protected element: ElementRef;
@@ -29,7 +31,10 @@ export class FileSelectDirective {
   public onChange(): any {
     let files = this.element.nativeElement.files;
     let options = this.getOptions();
-    let filters = this.getFilters();
+    let filters = typeof this.filter === 'function' ? [{
+      name: 'ng2FileSelectDirectiveFilter',
+      fn: this.filter
+    }, ...options.filters] : this.getFilters();
 
     this.uploader.addToQueue(files, options, filters);
     this.onFileSelected.emit(files);

src/file-upload/file-uploader.class.ts

@@ -12,11 +12,11 @@ export interface Headers {
   value: string;
 }
 
-export type ParsedResponseHeaders = { [ headerFieldName: string ]: string };
+export type ParsedResponseHeaders = { [headerFieldName: string]: string };
 
-export type FilterFunction = {
-  name: string,
-  fn: (item?: FileLikeObject, options?: FileUploaderOptions) => boolean
+export interface FilterFunction {
+  name: string;
+  fn(this: FileUploader, item?: FileLikeObject, options?: FileUploaderOptions, queueIndex?: number): boolean | Promise<boolean>;
 };
 
 export interface FileUploaderOptions {
@@ -35,11 +35,10 @@ export interface FileUploaderOptions {
   disableMultipart?: boolean;
   itemAlias?: string;
   authTokenHeader?: string;
-  additionalParameter?: { [ key: string ]: any };
+  additionalParameter?: { [key: string]: any };
   parametersBeforeFiles?: boolean;
   formatDataFunction?: Function;
   formatDataFunctionIsAsync?: boolean;
-  uploadFilesInSingleRequest?: boolean;
 }
 
 export class FileUploader {
@@ -60,19 +59,19 @@ export class FileUploader {
     removeAfterUpload: false,
     disableMultipart: false,
     formatDataFunction: (item: FileItem) => item._file,
-    formatDataFunctionIsAsync: false,
-    uploadFilesInSingleRequest : false
+    formatDataFunctionIsAsync: false
   };
 
   protected _failFilterIndex: number;
 
   public constructor(options: FileUploaderOptions) {
     this.setOptions(options);
-    this.response = new EventEmitter<any>();    
+    this.response = new EventEmitter<any>();
   }
 
   public setOptions(options: FileUploaderOptions): void {
     this.options = Object.assign(this.options, options);
+
     this.authToken = this.options.authToken;
     this.authTokenHeader = this.options.authTokenHeader || 'Authorization';
     this.autoUpload = this.options.autoUpload;
@@ -90,35 +89,39 @@ export class FileUploader {
       this.options.filters.unshift({ name: 'mimeType', fn: this._mimeTypeFilter });
     }
 
-    for (let i = 0; i < this.queue.length; i++) {
-      this.queue[ i ].url = this.options.url;
+    for (const q of this.queue) {
+      q.url = this.options.url;
     }
   }
 
-  public addToQueue(files: File[], options?: FileUploaderOptions, filters?: FilterFunction[] | string): void {
+  public async addToQueue(files: FileList, options?: FileUploaderOptions, filters?: FilterFunction[] | string): Promise<void> {
     let list: File[] = [];
-    for (let file of files) {
-      list.push(file);
+    // tslint:disable-next-line:prefer-for-of
+    for (let i = 0; i < files.length; i++) {
+      list.push(files[i]);
     }
+
     let arrayOfFilters = this._getFilters(filters);
     let count = this.queue.length;
     let addedFileItems: FileItem[] = [];
-    list.map((some: File) => {
+    let idx = 0;
+
+    for (const some of list) {
       if (!options) {
         options = this.options;
       }
 
       let temp = new FileLikeObject(some);
-      if (this._isValidFile(temp, arrayOfFilters, options)) {
+      if (await this._isValidFile(temp, arrayOfFilters, options, idx++)) {
         let fileItem = new FileItem(this, some, options);
         addedFileItems.push(fileItem);
         this.queue.push(fileItem);
         this._onAfterAddingFile(fileItem);
       } else {
-        let filter = arrayOfFilters[ this._failFilterIndex ];
+        let filter = arrayOfFilters[this._failFilterIndex];
         this._onWhenAddingFileFailed(temp, filter, options);
       }
-    });
+    }
     if (this.queue.length !== count) {
       this._onAfterAddingAll(addedFileItems);
       this.progress = this._getTotalProgress();
@@ -131,7 +134,7 @@ export class FileUploader {
 
   public removeFromQueue(value: FileItem): void {
     let index = this.getIndexOfItem(value);
-    let item = this.queue[ index ];
+    let item = this.queue[index];
     if (item.isUploading) {
       item.cancel();
     }
@@ -141,54 +144,39 @@ export class FileUploader {
 
   public clearQueue(): void {
     while (this.queue.length) {
-      this.queue[ 0 ].remove();
+      this.queue[0].remove();
     }
     this.progress = 0;
   }
 
-  public uploadItem(value: FileItem): void {    
-    this.uploadItems(new Array<FileItem>(value));
-  }
-
-  public uploadItems(values: FileItem[]): void {
-    values.forEach(element => {
-      let index = this.getIndexOfItem(element);
-      let item = this.queue[ index ];
-      item._prepareToUploading();
-    });
-        
+  public uploadItem(value: FileItem): void {
+    let index = this.getIndexOfItem(value);
+    let item = this.queue[index];
     let transport = this.options.isHTML5 ? '_xhrTransport' : '_iframeTransport';
-    
+    item._prepareToUploading();
     if (this.isUploading) {
       return;
     }
-    this.isUploading = true;    
-    (this as any)[ transport ](values);
+    this.isUploading = true;
+    (this as any)[transport](item);
   }
 
   public cancelItem(value: FileItem): void {
     let index = this.getIndexOfItem(value);
-    let item = this.queue[ index ];
+    let item = this.queue[index];
     let prop = this.options.isHTML5 ? item._xhr : item._form;
     if (item && item.isUploading) {
       prop.abort();
     }
   }
 
-  public uploadAll(): void {    
+  public uploadAll(): void {
     let items = this.getNotUploadedItems().filter((item: FileItem) => !item.isUploading);
     if (!items.length) {
       return;
     }
-
     items.map((item: FileItem) => item._prepareToUploading());
-
-    if (this.options.uploadFilesInSingleRequest){
-      this.uploadItems(items);      
-    }
-    else{
-      items[ 0 ].upload();
-    }
+    items[0].upload();
   }
 
   public cancelAll(): void {
@@ -291,27 +279,12 @@ export class FileUploader {
   public _onCompleteItem(item: FileItem, response: string, status: number, headers: ParsedResponseHeaders): void {
     item._onComplete(response, status, headers);
     this.onCompleteItem(item, response, status, headers);
-    
-    if (!this.options.uploadFilesInSingleRequest)
-    {
-      let nextItem = this.getReadyItems()[ 0 ];
-      this.isUploading = false;
-      if (nextItem) {
-        nextItem.upload();
-        return;
-      }
-      this.onCompleteAll();
-      this.progress = this._getTotalProgress();
-      this._render();
-    }    
-  }
-
-  public _onCompleteAllItems(items: FileItem[], response: string, status: number, headers: ParsedResponseHeaders): void {
-    items.forEach(item => {
-      item._onComplete(response, status, headers);
-      this.onCompleteItem(item, response, status, headers);
-    });    
+    let nextItem = this.getReadyItems()[0];
     this.isUploading = false;
+    if (nextItem) {
+      nextItem.upload();
+      return;
+    }
     this.onCompleteAll();
     this.progress = this._getTotalProgress();
     this._render();
@@ -320,109 +293,93 @@ export class FileUploader {
   protected _headersGetter(parsedHeaders: ParsedResponseHeaders): any {
     return (name: any): any => {
       if (name) {
-        return parsedHeaders[ name.toLowerCase() ] || void 0;
+        return parsedHeaders[name.toLowerCase()] || void 0;
       }
       return parsedHeaders;
     };
   }
 
-  protected _xhrTransport(items: FileItem[]): any {  
+  protected _xhrTransport(item: FileItem): any {
     let that = this;
-    let firstItem = items[0];    
-    let xhr = firstItem._xhr = new XMLHttpRequest();
+    let xhr = item._xhr = new XMLHttpRequest();
     let sendable: any;
+    this._onBeforeUploadItem(item);
 
-    items.forEach(item => {
-      this._onBeforeUploadItem(item);  
-    });
-    
-    items.forEach(item => {
-      if (typeof item._file.size !== 'number') {
-        throw new TypeError('The file specified is no longer valid');
-      }
-    });
-
+    if (typeof item._file.size !== 'number') {
+      throw new TypeError('The file specified is no longer valid');
+    }
     if (!this.options.disableMultipart) {
       sendable = new FormData();
-      items.forEach(item => {
-        this._onBuildItemForm(item, sendable);
-      });
-
-      const appendFiles = () => {
-        items.forEach(item => {
-          sendable.append(item.alias, item._file, item.file.name)
-        });        
-      };
+      this._onBuildItemForm(item, sendable);
 
+      const appendFile = () => sendable.append(item.alias, item._file, item.file.name);
       if (!this.options.parametersBeforeFiles) {
-        appendFiles();
+        appendFile();
       }
 
       // For AWS, Additional Parameters must come BEFORE Files
       if (this.options.additionalParameter !== undefined) {
         Object.keys(this.options.additionalParameter).forEach((key: string) => {
-          let paramVal = this.options.additionalParameter[ key ];
+          let paramVal = this.options.additionalParameter[key];
           // Allow an additional parameter to include the filename
-          if (!this.options.uploadFilesInSingleRequest && typeof paramVal === 'string' && paramVal.indexOf('{{file_name}}') >= 0) {
-            paramVal = paramVal.replace('{{file_name}}', firstItem.file.name);
+          if (typeof paramVal === 'string' && paramVal.indexOf('{{file_name}}') >= 0) {
+            paramVal = paramVal.replace('{{file_name}}', item.file.name);
           }
           sendable.append(key, paramVal);
         });
       }
 
       if (this.options.parametersBeforeFiles) {
-        appendFiles();
+        appendFile();
       }
     } else {
-      sendable = this.options.formatDataFunction(firstItem);
+      sendable = this.options.formatDataFunction(item);
     }
 
+    xhr.upload.onprogress = (event: any) => {
+      let progress = Math.round(event.lengthComputable ? event.loaded * 100 / event.total : 0);
+      this._onProgressItem(item, progress);
+    };
     xhr.onload = () => {
       let headers = this._parseHeaders(xhr.getAllResponseHeaders());
       let response = this._transformResponse(xhr.response, headers);
       let gist = this._isSuccessCode(xhr.status) ? 'Success' : 'Error';
       let method = '_on' + gist + 'Item';
-      items.forEach(item => {
-        (this as any)[ method ](item, response, xhr.status, headers);        
-      });
-      this._onCompleteAllItems(items, response, xhr.status, headers);      
+      (this as any)[method](item, response, xhr.status, headers);
+      this._onCompleteItem(item, response, xhr.status, headers);
     };
     xhr.onerror = () => {
       let headers = this._parseHeaders(xhr.getAllResponseHeaders());
       let response = this._transformResponse(xhr.response, headers);
-      items.forEach(item => {
-        this._onErrorItem(firstItem, response, xhr.status, headers);
-      });
-      this._onCompleteAllItems(items, response, xhr.status, headers); 
+      this._onErrorItem(item, response, xhr.status, headers);
+      this._onCompleteItem(item, response, xhr.status, headers);
     };
     xhr.onabort = () => {
       let headers = this._parseHeaders(xhr.getAllResponseHeaders());
       let response = this._transformResponse(xhr.response, headers);
-      items.forEach(item => {
-        this._onCancelItem(firstItem, response, xhr.status, headers);
-      });
-      this._onCompleteAllItems(items, response, xhr.status, headers); 
+      this._onCancelItem(item, response, xhr.status, headers);
+      this._onCompleteItem(item, response, xhr.status, headers);
     };
-    xhr.open(firstItem.method, firstItem.url, true);
-    xhr.withCredentials = firstItem.withCredentials;
+    xhr.open(item.method, item.url, true);
+    xhr.withCredentials = item.withCredentials;
     if (this.options.headers) {
       for (let header of this.options.headers) {
         xhr.setRequestHeader(header.name, header.value);
       }
     }
-    if (firstItem.headers.length) {
-      for (let header of firstItem.headers) {
+    if (item.headers.length) {
+      for (let header of item.headers) {
         xhr.setRequestHeader(header.name, header.value);
       }
     }
     if (this.authToken) {
       xhr.setRequestHeader(this.authTokenHeader, this.authToken);
     }
-    xhr.onreadystatechange = function () {
-      if (xhr.readyState == XMLHttpRequest.DONE) {
-        that.response.emit(xhr.responseText)
+    xhr.onreadystatechange = function (): void {
+      if (xhr.readyState === XMLHttpRequest.DONE) {
+        that.response.emit(xhr.responseText);
       }
-    }
+    };
     if (this.options.formatDataFunctionIsAsync) {
       sendable.then(
         (result: any) => xhr.send(JSON.stringify(result))
@@ -467,12 +424,18 @@ export class FileUploader {
     return this.options.queueLimit === undefined || this.queue.length < this.options.queueLimit;
   }
 
-  protected _isValidFile(file: FileLikeObject, filters: FilterFunction[], options: FileUploaderOptions): boolean {
+  protected async _isValidFile(file: FileLikeObject, filters: FilterFunction[], options: FileUploaderOptions, queueIndex: number): Promise<boolean> {
     this._failFilterIndex = -1;
-    return !filters.length ? true : filters.every((filter: FilterFunction) => {
+
+    for (const filter of filters) {
       this._failFilterIndex++;
-      return filter.fn.call(this, file, options);
-    });
+
+      if (!(await Promise.resolve(filter.fn.call(this, file, options, queueIndex)))) {
+        return false;
+      }
+    }
+
+    return true;
   }
 
   protected _isSuccessCode(status: number): boolean {
@@ -496,7 +459,7 @@ export class FileUploader {
       key = line.slice(0, i).trim().toLowerCase();
       val = line.slice(i + 1).trim();
       if (key) {
-        parsed[ key ] = parsed[ key ] ? parsed[ key ] + ', ' + val : val;
+        parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;
       }
     });
     return parsed;