feat(package): upgrade to ng v2.3+ (#574)

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

@@ -0,0 +1,46 @@
+import { Directive, ElementRef, Input, HostListener } from '@angular/core';
+
+import { FileUploader } from './file-uploader.class';
+
+// todo: filters
+
+@Directive({selector: '[ng2FileSelect]'})
+export class FileSelectDirective {
+  @Input() public uploader:FileUploader;
+
+  protected element:ElementRef;
+
+  public constructor(element:ElementRef) {
+    this.element = element;
+  }
+
+  public getOptions():any {
+    return this.uploader.options;
+  }
+
+  public getFilters():any {
+    return void 0;
+  }
+
+  public isEmptyAfterSelection():boolean {
+    return !!this.element.nativeElement.attributes.multiple;
+  }
+
+  @HostListener('change')
+  public onChange():any {
+    // let files = this.uploader.isHTML5 ? this.element.nativeElement[0].files : this.element.nativeElement[0];
+    let files = this.element.nativeElement.files;
+    let options = this.getOptions();
+    let filters = this.getFilters();
+
+    // if(!this.uploader.isHTML5) this.destroy();
+
+    this.uploader.addToQueue(files, options, filters);
+    if (this.isEmptyAfterSelection()) {
+      // todo
+      this.element.nativeElement.value = '';
+      /*this.element.nativeElement
+       .replaceWith(this.element = this.element.nativeElement.clone(true)); // IE fix*/
+    }
+  }
+}