added password generator tool

src/app/tools/password-generator.component.ts

@@ -0,0 +1,50 @@
+import { ToasterService } from 'angular2-toaster';
+import { Angulartics2 } from 'angulartics2';
+
+import {
+    Component,
+    ComponentFactoryResolver,
+    ViewChild,
+    ViewContainerRef,
+} from '@angular/core';
+
+import { I18nService } from 'jslib/abstractions/i18n.service';
+import { PasswordGenerationService } from 'jslib/abstractions/passwordGeneration.service';
+import { PlatformUtilsService } from 'jslib/abstractions/platformUtils.service';
+
+import {
+    PasswordGeneratorComponent as BasePasswordGeneratorComponent,
+} from 'jslib/angular/components/password-generator.component';
+
+import { ModalComponent } from '../modal.component';
+import { PasswordGeneratorHistoryComponent } from './password-generator-history.component';
+
+@Component({
+    selector: 'app-password-generator',
+    templateUrl: 'password-generator.component.html',
+})
+export class PasswordGeneratorComponent extends BasePasswordGeneratorComponent {
+    @ViewChild('historyTemplate', { read: ViewContainerRef }) historyModalRef: ViewContainerRef;
+
+    private modal: ModalComponent = null;
+
+    constructor(passwordGenerationService: PasswordGenerationService, analytics: Angulartics2,
+        platformUtilsService: PlatformUtilsService, i18nService: I18nService,
+        toasterService: ToasterService, private componentFactoryResolver: ComponentFactoryResolver) {
+        super(passwordGenerationService, analytics, platformUtilsService, i18nService, toasterService, window);
+    }
+
+    history() {
+        if (this.modal != null) {
+            this.modal.close();
+        }
+
+        const factory = this.componentFactoryResolver.resolveComponentFactory(ModalComponent);
+        this.modal = this.historyModalRef.createComponent(factory).instance;
+        this.modal.show<PasswordGeneratorHistoryComponent>(PasswordGeneratorHistoryComponent, this.historyModalRef);
+
+        this.modal.onClosed.subscribe(async () => {
+            this.modal = null;
+        });
+    }
+}