DevExtreme FileUploader drag&drop Edge support

import { Directive, HostListener } from '@angular/core';
import { DxFileUploaderComponent } from 'devextreme-angular/ui/file-uploader';

@Directive({
    // tslint:disable-next-line:directive-selector
    selector: 'dx-file-uploader'
})
export class DxFileUploaderDirective {
    private $element: any;
    private $uploaderContainer: any;

    constructor(private dxFileUploader: DxFileUploaderComponent) {
    }

    private isIeOrEdgeBrowser(): boolean {
        let ua = navigator.userAgent;
        return ua.indexOf('Edge') !== -1 ||
               ua.indexOf('MSIE') !== -1 ||
               ua.indexOf('Trident') !== -1;
    }

    @HostListener('onInitialized', ['$event'])
    handleOnInitializedEvent(e) {
        if (!this.isIeOrEdgeBrowser()) {
            return;
        }

        this.$element = e.element;
        setTimeout(this.addDragAndDropForEdgeBrowser.bind(this), 100);
    }

    private addDragAndDropForEdgeBrowser(): void {
        this.$uploaderContainer = this.$element.find('.dx-fileuploader-input-container');

        this.$uploaderContainer.css('display', '');
        this.$uploaderContainer[0].addEventListener('dragenter', this.onDragEnter.bind(this), false);
        this.$uploaderContainer[0].addEventListener('dragover', this.onDragOver.bind(this), false);
        this.$uploaderContainer[0].addEventListener('dragleave', this.onDragLeave.bind(this), false);
        this.$uploaderContainer[0].addEventListener('drop', this.onDrop.bind(this), false);
    }

    private onDragEnter(e): void {
        e.stopPropagation();
        e.preventDefault();

        console.log('enter');

        this.$element.addClass('dx-fileuploader-dragover');
    }

    private onDragOver(e): void {
        e.stopPropagation();
        e.preventDefault();
    }

    private onDragLeave(e): void {
        this.$element.removeClass('dx-fileuploader-dragover');
    }

    private onDrop(e): void {
        this.$element.removeClass('dx-fileuploader-dragover');
        if (e.dataTransfer.files.length) {
            let files = [];
            for (let i = 0; i < e.dataTransfer.files.length; i++) {
                files.push(e.dataTransfer.files.item(i));
            }
            this.dxFileUploader.instance.option('value', files);
        }
    }
}