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Backend API
<div class="widget-container flex-box">
<span>Profile Picture</span>
<div
id="dropzone-external"
class="flex-box"
[ngClass]="isDropZoneActive ? 'dropzone-active' : null"
>
<img id="dropzone-image" [src]="imageSource" *ngIf="imageSource" alt="" />
<div id="dropzone-text" class="flex-box" *ngIf="textVisible">
<span>Drag & Drop the desired file</span>
<span>…or click to browse for a file instead.</span>
</div>
<dx-progress-bar
#uploadProgress
[min]="0"
[max]="100"
width="30%"
[showStatus]="false"
[visible]="progressVisible"
[value]="progressValue"
></dx-progress-bar>
</div>
<dx-file-uploader
#fileUploader
dialogTrigger="#dropzone-external"
dropZone="#dropzone-external"
[multiple]="false"
[allowedFileExtensions]="allowedFileExtensions"
uploadMode="instantly"
uploadUrl="https://js.devexpress.com/Demos/NetCore/FileUploader/Upload"
[visible]="false"
(onDropZoneEnter)="onDropZoneEnter($event)"
(onDropZoneLeave)="onDropZoneLeave($event)"
(onUploaded)="onUploaded($event)"
(onProgress)="onProgress($event)"
(onUploadStarted)="onUploadStarted($event)"
></dx-file-uploader>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxFileUploaderModule, DxProgressBarModule } from 'devextreme-angular';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: `app/app.component.html`,
styleUrls: [`app/app.component.css`],
})
export class AppComponent {
isDropZoneActive = false;
imageSource = '';
textVisible = true;
progressVisible = false;
progressValue = 0;
allowedFileExtensions: string[] = ['.jpg', '.jpeg', '.gif', '.png'];
constructor() {
this.onDropZoneEnter = this.onDropZoneEnter.bind(this);
this.onDropZoneLeave = this.onDropZoneLeave.bind(this);
this.onUploaded = this.onUploaded.bind(this);
this.onProgress = this.onProgress.bind(this);
this.onUploadStarted = this.onUploadStarted.bind(this);
}
onDropZoneEnter({ component, dropZoneElement, event }) {
if (dropZoneElement.id === 'dropzone-external') {
const items = event.originalEvent.dataTransfer.items;
const allowedFileExtensions = component.option('allowedFileExtensions');
const draggedFileExtension = `.${items[0].type.replace(/^image\//, '')}`;
const isSingleFileDragged = items.length === 1;
const isValidFileExtension = allowedFileExtensions.includes(draggedFileExtension);
if (isSingleFileDragged && isValidFileExtension) {
this.isDropZoneActive = true;
}
}
}
onDropZoneLeave(e) {
if (e.dropZoneElement.id === 'dropzone-external') { this.isDropZoneActive = false; }
}
onUploaded(e) {
const file = e.file;
const fileReader = new FileReader();
fileReader.onload = () => {
this.isDropZoneActive = false;
this.imageSource = fileReader.result as string;
};
fileReader.readAsDataURL(file);
this.textVisible = false;
this.progressVisible = false;
this.progressValue = 0;
}
onProgress(e) {
this.progressValue = e.bytesLoaded / e.bytesTotal * 100;
}
onUploadStarted() {
this.imageSource = '';
this.progressVisible = true;
}
}
@NgModule({
imports: [
BrowserModule,
DxFileUploaderModule,
DxProgressBarModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #dropzone-external {
width: 350px;
height: 350px;
background-color: rgb(183 183 183 / 10%);
border-width: 2px;
border-style: dashed;
padding: 10px;
border-color: var(--dx-color-border);
}
::ng-deep #dropzone-external > * {
pointer-events: none;
}
::ng-deep #dropzone-external.dropzone-active {
border-style: solid;
border-color: var(--dx-color-primary);
}
::ng-deep .widget-container > span {
font-size: 22px;
font-weight: bold;
margin-bottom: 16px;
}
::ng-deep #dropzone-image {
max-width: 100%;
max-height: 100%;
}
::ng-deep #dropzone-text > span {
font-weight: 100;
opacity: 0.5;
}
::ng-deep #upload-progress {
display: flex;
margin-top: 10px;
}
::ng-deep .flex-box {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
// In real applications, you should not transpile code in the browser.
// You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
const componentNames = [
'accordion',
'action-sheet',
'autocomplete',
'bar-gauge',
'box',
'bullet',
'button-group',
'button',
'calendar',
'chart',
'check-box',
'circular-gauge',
'color-box',
'context-menu',
'data-grid',
'date-box',
'date-range-box',
'defer-rendering',
'diagram',
'draggable',
'drawer',
'drop-down-box',
'drop-down-button',
'file-manager',
'file-uploader',
'filter-builder',
'form',
'funnel',
'gallery',
'gantt',
'html-editor',
'linear-gauge',
'list',
'load-indicator',
'load-panel',
'lookup',
'map',
'menu',
'multi-view',
'nested',
'number-box',
'pie-chart',
'pivot-grid-field-chooser',
'pivot-grid',
'polar-chart',
'popover',
'popup',
'progress-bar',
'radio-group',
'range-selector',
'range-slider',
'recurrence-editor',
'resizable',
'responsive-box',
'sankey',
'scheduler',
'scroll-view',
'select-box',
'slider',
'sortable',
'sparkline',
'speed-dial-action',
'splitter',
'switch',
'tab-panel',
'tabs',
'tag-box',
'text-area',
'text-box',
'tile-view',
'toast',
'toolbar',
'tooltip',
'tree-list',
'tree-map',
'tree-view',
'validation-group',
'validation-summary',
'validator',
'vector-map',
];
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'@angular/platform-browser-dynamic': {
'esModule': true,
},
'@angular/platform-browser': {
'esModule': true,
},
'@angular/core': {
'esModule': true,
},
'@angular/common': {
'esModule': true,
},
'@angular/common/http': {
'esModule': true,
},
'@angular/compiler': {
'esModule': true,
},
'@angular/animations': {
'esModule': true,
},
'@angular/forms': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': '../../../../bundles/',
},
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
/* @angular */
'@angular/compiler': 'bundles:@angular/compiler.umd.js',
'@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js',
'@angular/core': 'bundles:@angular/core.umd.js',
'@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js',
'@angular/common': 'bundles:@angular/common.umd.js',
'@angular/common/http': 'bundles:@angular/common-http.umd.js',
'@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js',
'@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js',
'@angular/forms': 'bundles:@angular/forms.umd.js',
/* devextreme */
'devextreme': 'npm:devextreme@24.1.6/cjs',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'devextreme/bundles/dx.all': 'npm:devextreme@24.1.6/bundles/dx.all.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.11',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56',
/* devextreme-angular umd maps */
'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js',
'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js',
'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js',
...componentNames.reduce((acc, name) => {
acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`;
return acc;
}, {}),
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'tslib': 'npm:tslib@2.6.1/tslib.js',
'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js',
'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
'rxjs': {
defaultExtension: 'js',
},
'rxjs/operators': {
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devexpress-diagram@2.2.11/package.json',
'npm:devexpress-gantt@4.1.56/package.json',
],
};
System.config(window.config);
// System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.6/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.13.3/bundles/zone.umd.min.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.13/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import("app").catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>
NOTE
Allowed file extensions: .jpg, .jpeg, .gif, .png
Maximum file size: 4 MB