update upload and add remove to upload-file component

projects/material-addons/src/lib/file-upload/file-upload.component.html

@@ -9,20 +9,30 @@
     #fileInput
     (change)="uploadFile($event.target.files)"
     (click)="fileInput.value = null"
-    [accept]="acceptForInput"
+    [accept]="acceptedFileTypes"
     [id]="id"
     [multiple]="multiple"
     hidden
     type="file"
   />
   <mat-card-content>
-    <mat-icon>vertical_align_top</mat-icon>
-    {{ text ? text : 'Upload' }}
+    <ng-container *ngIf="hasSingleFile(); else uploadDefault">
+      {{ fileList[0].name }}
+    </ng-container>
+
+    <ng-template #uploadDefault>
+      <mat-icon>vertical_align_top</mat-icon>
+      {{ text ? text : 'Upload' }}
+    </ng-template>
   </mat-card-content>
 </mat-card>
 
 <ng-container *ngIf="showFileList">
   <mat-chip-listbox>
-    <mat-chip *ngFor="let file of fileList" (click)="openFile(file)" class="download">{{ file.name }}</mat-chip>
+    <mat-chip *ngFor="let file of fileList" (click)="openFile(file)" class="download"
+              [removable]="removable" (removed)="remove(file)">
+      {{ file.name }}
+      <mat-icon matChipRemove *ngIf="removable">delete_forever</mat-icon>
+    </mat-chip>
   </mat-chip-listbox>
 </ng-container>

projects/material-addons/src/lib/file-upload/file-upload.component.ts

@@ -22,48 +22,83 @@ export class FileUploadComponent implements OnInit {
   @Input() accept: string[];
   @Input() text: string;
   @Input() showFileList: boolean = false;
+  @Input() removable: boolean = true;
   @Output() fileEmitter = new EventEmitter<FileList>();
   @Output() errorEmitter = new EventEmitter<UploadError>();
 
   fileList: File[] = [];
-  acceptForInput: string[] = [];
-  private uploadError: boolean = false;
+  acceptedFileTypes: string[] = [];
 
   ngOnInit(): void {
+    this.setAcceptedFileTypes();
+  }
+
+  private setAcceptedFileTypes(): void {
     if (this.accept?.length) {
-      this.accept.forEach((accepted) => this.acceptForInput.push(`.${accepted}`));
+      this.acceptedFileTypes = this.accept.map(ext => `.${ext.toLowerCase()}`);
     }
   }
 
-  uploadFile(fileList: FileList): void {
-    if (!this.multiple && (fileList.length > 1 || this.fileList.length === 1)) {
-      this.errorEmitter.emit('ONLY_SINGLE_FILE');
-      this.uploadError = false;
+  uploadFile(files: FileList): void {
+    const fileArray = Array.from(files);
+
+    if (!this.validateFileList(fileArray)) {
       return;
     }
-    if (this.accept && this.accept.length > 0) {
-      for (let i = 0; i < fileList.length; i++) {
-        this.getFileEnding(fileList.item(i).name);
-      }
+
+    this.addFiles(fileArray);
+    this.fileEmitter.emit(this.createFileListFromArray(this.fileList));
+  }
+
+  private validateFileList(fileArray: File[]): boolean {
+    if (!this.multiple && fileArray.length > 1) {
+      this.emitError('ONLY_SINGLE_FILE');
+      return false;
     }
-    if (!this.uploadError) {
-      for (let i = 0; i < fileList.length; i++) {
-        this.fileList.push(fileList.item(i));
+
+    for (const file of fileArray) {
+      if (!this.isAcceptedFileType(file.name)) {
+        this.emitError('FILETYPE_NOT_SUPPORTED');
+        return false;
       }
-      this.fileEmitter.emit(fileList);
     }
-    this.uploadError = false;
+
+    return true;
+  }
+
+  private emitError(errorType: UploadError): void {
+    this.errorEmitter.emit(errorType);
+  }
+
+  private isAcceptedFileType(fileName: string): boolean {
+    const fileExtension = fileName.split('.').pop()?.toLowerCase();
+    return this.acceptedFileTypes.includes(`.${fileExtension}`);
   }
 
-  getFileEnding(name: string): void {
-    const ending = name.substring(name.lastIndexOf('.') + 1);
-    if (this.accept.filter((a) => a.toLowerCase() === ending.toLowerCase()).length === 0) {
-      this.errorEmitter.emit('FILETYPE_NOT_SUPPORTED');
-      this.uploadError = true;
+  private addFiles(fileArray: File[]): void {
+    if (!this.multiple) {
+      this.fileList = [];
     }
+    this.fileList.push(...fileArray);
   }
 
-  openFile(file: File) {
+  openFile(file: File): void {
     window.open(window.URL.createObjectURL(file));
   }
+
+  remove(file: File): void {
+    this.fileList = this.fileList.filter(f => f !== file);
+    this.fileEmitter.emit(this.createFileListFromArray(this.fileList));
+  }
+
+  private createFileListFromArray(files: File[]): FileList {
+    const dataTransfer = new DataTransfer();
+    files.forEach(file => dataTransfer.items.add(file));
+    return dataTransfer.files;
+  }
+
+  hasSingleFile(): boolean {
+    return !this.multiple && this.fileList.length === 1;
+  }
+
 }

src/app/component-demos/upload-demo/upload-demo-api-spec/upload-demo-api-spec.component.html

@@ -0,0 +1,77 @@
+<div class="api-specification">
+  <h2>Properties</h2>
+  <table>
+    <thead>
+    <tr>
+      <th>Property</th>
+      <th>Type</th>
+      <th>Default Value</th>
+      <th>Description</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr>
+      <td><code>id</code></td>
+      <td><code>string</code></td>
+      <td><code>''</code></td>
+      <td>
+        HTML id of the element.
+      </td>
+    </tr>
+    <tr>
+      <td><code>multiple</code></td>
+      <td><code>boolean</code></td>
+      <td><code></code></td>
+      <td>if <code>false</code> only 1 document can be added, otherwise you can add as much documents as you want.</td>
+    </tr>
+    <tr>
+      <td><code>accept</code></td>
+      <td><code>string[]</code></td>
+      <td><code>'[]'</code></td>
+      <td>is a string array which contains all valid document types.</td>
+    </tr>
+    <tr>
+      <td><code>text</code></td>
+      <td><code>string</code></td>
+      <td><code>'Upload'</code></td>
+      <td>Text in the Upload Field.</td>
+    </tr>
+    <tr>
+      <td><code>showFileList</code></td>
+      <td><code>boolean</code></td>
+      <td><code>false</code></td>
+      <td>Shows the list of added files.</td>
+    </tr>
+    <tr>
+      <td><code>removable</code></td>
+      <td><code>boolean</code></td>
+      <td><code>true</code></td>
+      <td>Uploaded file can be deleted using icon in chip.</td>
+    </tr>
+    </tbody>
+  </table>
+
+  <h2>Events</h2>
+  <table>
+    <thead>
+    <tr>
+      <th>Event</th>
+      <th>Description</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr>
+      <td><code>fileEmitter</code></td>
+      <td>Emits when file is uploaded/removed. Contains file list</td>
+    </tr>
+    <tr>
+      <td><code>errorEmitter</code></td>
+      <td>(ErrorType) ONLY_SINGLE_FILE: if only 1 File is allowed and user tries to add more than 1 File in 1 dialog.</td>
+    </tr>
+    <tr>
+      <td><code>errorEmitter</code></td>
+      <td>(ErrorType) FILETYPE_NOT_SUPPORTED: if user tries to add unsupported file type</td>
+    </tr>
+    </tbody>
+  </table>
+</div>

src/app/component-demos/upload-demo/upload-demo-api-spec/upload-demo-api-spec.component.scss

@@ -0,0 +1,24 @@
+.api-specification {
+  font-family: Arial, sans-serif;
+}
+
+.api-specification h2 {
+  color: #333;
+}
+
+.api-specification table {
+  width: 100%;
+  border-collapse: collapse;
+  margin-bottom: 20px;
+}
+
+.api-specification th,
+.api-specification td {
+  border: 1px solid #ccc;
+  padding: 8px;
+  text-align: left;
+}
+
+.api-specification th {
+  background-color: #f2f2f2;
+}

src/app/component-demos/upload-demo/upload-demo-api-spec/upload-demo-api-spec.component.ts

@@ -0,0 +1,12 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-upload-demo-api-spec',
+  standalone: true,
+  imports: [],
+  templateUrl: './upload-demo-api-spec.component.html',
+  styleUrl: './upload-demo-api-spec.component.scss'
+})
+export class UploadDemoApiSpecComponent {
+
+}

src/app/component-demos/upload-demo/upload-demo.component.html

@@ -2,18 +2,10 @@
 <br />
 <h2>Behavior</h2>
 <ul>
-  <li>clickable with dialog to select files</li>
+  <li>Clickable with dialog to select files</li>
   <li>Drag And Drop Functionality</li>
-</ul>
-
-<br />
-<h2>Inputs</h2>
-<ul>
-  <li>accept: is a string array which contains all valid document types</li>
-  <li>multiple: if false only 1 document can be added, otherwise you can add as much documents as you want</li>
-  <li>text: Text in the Upload Field</li>
-  <li>id: HTML id of the element</li>
-  <li>showFileList: Shows the list of added files</li>
+  <li>Replace file with a new one in single upload mode</li>
+  <li>Show the </li>
 </ul>
 
 <br />
@@ -37,3 +29,5 @@ <h2>Output</h2>
 </p>
 
 <example-viewer [example]="uploadComponent"></example-viewer>
+<h2>API Specification</h2>
+<app-upload-demo-api-spec></app-upload-demo-api-spec>

src/app/component-demos/upload-demo/upload-demo.component.ts

@@ -3,13 +3,14 @@ import { Example } from '../../components/example-viewer/example.class';
 import { UploadFileComponent } from '../../example-components/upload-file/upload-file.component';
 import { ExampleViewerComponent } from '../../components/example-viewer/example-viewer.component';
 import { TextCodeComponent } from '../../components/text-code/text-code.component';
+import {UploadDemoApiSpecComponent} from './upload-demo-api-spec/upload-demo-api-spec.component';
 
 @Component({
   selector: 'app-upload-demo',
   templateUrl: './upload-demo.component.html',
   styleUrl: './upload-demo.component.scss',
   standalone: true,
-  imports: [TextCodeComponent, ExampleViewerComponent],
+  imports: [TextCodeComponent, ExampleViewerComponent, UploadDemoApiSpecComponent],
 })
 export class UploadDemoComponent {
   uploadComponent = new Example(UploadFileComponent, 'upload-file', 'upload');

src/app/example-components/upload-file/upload-file.component.html

@@ -7,12 +7,14 @@
 
 <mat-checkbox [(ngModel)]="multiple">{{ 'Allow Multiple Uploads' }}</mat-checkbox>
 <mat-checkbox [(ngModel)]="showFileList">{{ 'Show File List' }}</mat-checkbox>
+<mat-checkbox [(ngModel)]="removable">{{ 'Removable File' }}</mat-checkbox>
 
 <mad-file-upload
   [accept]="accept"
   [multiple]="multiple"
   [text]="'Upload File'"
   [showFileList]="showFileList"
+  [removable]="removable"
   [id]="'upload'"
   (fileEmitter)="filesEmitted($event)"
   (errorEmitter)="errorReceived($event)"

src/app/example-components/upload-file/upload-file.component.ts

@@ -20,6 +20,7 @@ export class UploadFileComponent {
 
   possibleFileEndings = ['pdf', 'doc', 'jpg', 'xls', 'xlsx', 'docx', 'doc', 'gif', 'png'];
   showFileList: boolean = false;
+  removable: boolean = false;
 
   filesEmitted(fileList: FileList) {
     for (let i = 0; i < fileList.length; i++) {