refractor: login module (#283)

* Refractor components.
* Shift language and footer component to shared module.
* Replace mat-icons by font-awesome icons.
* Add comments.

Fixes #284

.stylelintrc

@@ -10,9 +10,9 @@
     ],
     "selector-attribute-quotes": "always",
     "string-quotes": "double",
-    "max-nesting-depth": 3,
-    "selector-max-compound-selectors": 3,
-    "selector-max-specificity": "0,3,2",
+    "max-nesting-depth": 5,
+    "selector-max-compound-selectors": 5,
+    "selector-max-specificity": "1,3,2",
     "declaration-no-important": true,
     "at-rule-no-vendor-prefix": true,
     "media-feature-name-no-vendor-prefix": true,
@@ -22,9 +22,18 @@
     "no-empty-source": null,
     "selector-class-pattern": "[a-z-]+",
     "selector-id-pattern": "[a-z-]+",
-    "selector-max-id": 0,
+    "selector-max-id": 1,
     "selector-no-qualifying-type": true,
     "selector-max-universal": 0,
+    "selector-type-no-unknown": [
+      true,
+      {
+        "ignoreTypes": [
+          "mat-spinner",
+          "mat-radio-button"
+        ]
+      }
+    ],
     "selector-pseudo-element-no-unknown": [
       true,
       {

src/app/core/alert.service.ts

@@ -1,17 +1,22 @@
 import { Injectable, EventEmitter } from '@angular/core';
 
+export interface Alert {
+  type: string;
+  message: string;
+}
+
 @Injectable({
   providedIn: 'root'
 })
 export class AlertService {
 
-  public alertEvent: EventEmitter<any>;
+  public alertEvent: EventEmitter<Alert>;
 
   constructor() {
     this.alertEvent = new EventEmitter();
   }
 
-  alert(alertEvent: any) {
+  alert(alertEvent: Alert) {
     this.alertEvent.emit(alertEvent);
   }
 

src/app/core/index.ts

@@ -11,3 +11,4 @@ export * from './http/error-handler.interceptor';
 export * from './route.service';
 export * from './route-reusable-strategy';
 export * from './logger.service';
+export * from './alert.service';

src/app/login/login-form/login-form.component.html

@@ -1,27 +1,41 @@
-<form fxLayout="column" [formGroup]="loginForm" (ngSubmit)="login()">
-  <mat-form-field fxFlexAlign="center" class="textfield">
-    <span matPrefix><mat-icon>account_circle</mat-icon>&nbsp;&nbsp;</span>
-    <input matInput placeholder="Username" autocomplete="off" formControlName="username">
+<form fxLayout="column" [formGroup]="loginForm" (ngSubmit)="login()" id="login-form">
+
+  <mat-form-field fxFlexAlign="center" class="login-input">
+    <span matPrefix>
+      <fa-icon icon="user-circle" size="lg"></fa-icon>&nbsp;&nbsp;
+    </span>
+    <mat-label>Username</mat-label>
+    <input matInput type="text" autocomplete="off" formControlName="username">
     <mat-error *ngIf="loginForm.controls.username.hasError('required')">
       Username is <strong>required</strong>
     </mat-error>
   </mat-form-field>
-  <mat-form-field fxFlexAlign="center" class="textfield">
-    <span matPrefix><mat-icon>lock</mat-icon>&nbsp;&nbsp;</span>
-    <input matInput type="{{ passwordInputType }}" placeholder="Password" formControlName="password">
+
+  <mat-form-field fxFlexAlign="center" class="login-input">
+    <span matPrefix>
+      <fa-icon icon="lock" size="lg"></fa-icon>&nbsp;&nbsp;
+    </span>
+    <mat-label>Password</mat-label>
+    <input matInput type="{{ passwordInputType }}" formControlName="password">
     <button mat-button *ngIf="loginForm.controls.password.value && !loading" matSuffix mat-icon-button
-    aria-label="Clear" (mousedown)="passwordInputType = 'text'" (mouseup)="passwordInputType = 'password'">
-      <mat-icon *ngIf="passwordInputType === 'password'">visibility</mat-icon>
-      <mat-icon *ngIf="passwordInputType === 'text'">visibility_off</mat-icon>
+      (mousedown)="passwordInputType = 'text'" (mouseup)="passwordInputType = 'password'">
+      <fa-icon *ngIf="passwordInputType === 'password'" icon="eye"></fa-icon>
+      <fa-icon *ngIf="passwordInputType === 'text'" icon="eye-slash"></fa-icon>
     </button>
     <mat-error *ngIf="loginForm.controls.password.hasError('required')">
       Password is <strong>required</strong>
     </mat-error>
   </mat-form-field>
+
   <mat-checkbox fxFlexAlign="center" formControlName="remember" class="m-t-10">Remember me</mat-checkbox>
-  <button mat-raised-button color="primary" fxFlexAlign="center" class="btn" [disabled]="!loginForm.valid">
+
+  <button mat-raised-button color="primary" fxFlexAlign="center" class="login-button" [disabled]="!loginForm.valid">
     Login
     <mat-spinner [diameter]="20" *ngIf="loading"></mat-spinner>
   </button>
-  <button type="button" mat-button fxFlexAlign="center" class="btn" (click)="forgotPassword()" [disabled]="loading">Forgot Password?</button>
+
+  <button type="button" mat-button fxFlexAlign="center" class="login-button" (click)="forgotPassword()" [disabled]="loading">
+    Forgot Password?
+  </button>
+
 </form>

src/app/login/login-form/login-form.component.scss

@@ -1,15 +1,16 @@
-.textfield {
-  width: 14rem;
-  margin-bottom: 0.6rem;
-}
+#login-form {
+  .login-input {
+    width: 14rem;
+    margin-bottom: 0.6rem;
+  }
 
-.btn {
-  width: 14rem;
-  margin-top: 1rem;
-}
+  .login-button {
+    width: 14rem;
+    margin-top: 1rem;
+  }
 
-mat-spinner {
-  z-index: 4;
-  float: right;
-  margin: 0.5rem 0;
+  mat-spinner {
+    float: right;
+    margin: 0.5rem 0;
+  }
 }

src/app/login/login-form/login-form.component.ts

@@ -1,12 +1,16 @@
+/** Angular Imports */
 import { Component, OnInit } from '@angular/core';
 import { FormGroup, FormBuilder, Validators } from '@angular/forms';
 
+/** rxjs Imports */
 import { finalize } from 'rxjs/operators';
 
-import { Logger, AuthenticationService } from '../../core';
-
-const log = new Logger('Login');
+/** Custom Services */
+import { AuthenticationService } from '../../core';
 
+/**
+ * Login form component.
+ */
 @Component({
   selector: 'mifosx-login-form',
   templateUrl: './login-form.component.html',
@@ -14,37 +18,56 @@ const log = new Logger('Login');
 })
 export class LoginFormComponent implements OnInit {
 
+  /** Login form group. */
   loginForm: FormGroup;
+  /** Password input field type. */
   passwordInputType: string;
-  error: string;
+  /** True if loading. */
   loading = false;
-  authenticationEvent: any;
 
+  /**
+   * @param {FormBuilder} formBuilder Form Builder.
+   * @param {AuthenticationService} authenticationService Authentication Service.
+   */
   constructor(private formBuilder: FormBuilder,
               private authenticationService: AuthenticationService) {  }
 
+  /**
+   * Creates login form.
+   *
+   * Initializes password input field type.
+   */
   ngOnInit() {
     this.createLoginForm();
     this.passwordInputType = 'password';
   }
 
-  public login() {
+  /**
+   * Authenticates the user if the credentials are valid.
+   */
+  login() {
     this.loading = true;
     this.loginForm.disable();
     this.authenticationService.login(this.loginForm.value)
       .pipe(finalize(() => {
         this.loginForm.reset();
         this.loginForm.markAsPristine();
-        // Bug: Validation errors won't get removed on reset
+        // Angular Material Bug: Validation errors won't get removed on reset.
         this.loginForm.enable();
         this.loading = false;
       })).subscribe();
   }
 
-  public forgotPassword() {
-    console.log('TODO: Forgot Password');
+  /**
+   * TODO: Decision to be taken on providing this feature.
+   */
+  forgotPassword() {
+    console.log('Forgot Password feature currently unavailable.');
   }
 
+  /**
+   * Creates login form.
+   */
   private createLoginForm() {
     this.loginForm = this.formBuilder.group({
       'username': ['', Validators.required],

src/app/login/login-routing.module.ts

@@ -1,9 +1,14 @@
+/** Angular Imports */
 import { NgModule } from '@angular/core';
 import { Routes, RouterModule } from '@angular/router';
 
+/** Transalation Imports */
 import { extract } from '../core';
+
+/** Custom Components */
 import { LoginComponent } from './login.component';
 
+/** Login Routes */
 const routes: Routes = [
   {
     path: 'login',
@@ -12,6 +17,11 @@ const routes: Routes = [
   }
 ];
 
+/**
+ * Login Routing Module
+ *
+ * Configures the login routes.
+ */
 @NgModule({
   imports: [RouterModule.forChild(routes)],
   exports: [RouterModule],

src/app/login/login.component.html

@@ -1,78 +1,88 @@
+<!-- The viewport is divided into two parts having max-width 70% and 30% -->
 <div fxLayout="row">
-  <!-- I want a row divided into 2 parts 70% and 30% -->
 
-  <!-- In 70% we have a cover pic, org/app name, description, contact information -->
-  <!-- Column disappers on small screens -->
+  <!--
+    Content in 70%: (TODO: Allow customization by organization)
+      Cover Image
+      Organization/Application Name
+      Organization/Application Description
+
+    This content will be hidden for smaller screens.
+  -->
 
   <div fxFlex="70%" fxLayout="column" fxLayoutAlign="center center" fxHide.lt-md class="cover">
     <div class="cover-content">
       <h1 class="mat-display-1 cover-title">Mifos</h1>
-      <p class="mat-headline">
-        Mifos X is designed by the <a href="http://www.openmf.org">Mifos Initiative</a>. A <a href="http://mifos.org/resources/community/">global community</a> that aims to speed the elimination of poverty by enabling Organizations to more effectively and efficiently deliver responsible financial services to the world’s poor and unbanked.
-        Sounds interesting? <a href="http://mifos.org/take-action/volunteer/">Get involved!</a>
+      <p class="mat-headline cover-description">
+        Mifos X is designed by the <a href="http://www.openmf.org" target="_blank" class="cover-link">Mifos Initiative</a>. A <a href="http://mifos.org/resources/community/" target="_blank" class="cover-link">global community</a> that aims to speed the elimination of poverty by enabling Organizations to more effectively and efficiently deliver responsible financial services to the world’s poor and unbanked.
+        Sounds interesting? <a href="http://mifos.org/take-action/volunteer/" target="_blank" class="cover-link">Get involved!</a>
       </p>
     </div>
   </div>
 
-  <!-- In 30% when gt md otherwise fully covering -->
+  <!--
+    Content in 30%: (TODO: Allow customization of Name, Logo and Contact Information by organization)
+      Language Selector
+      Organization/Application Name with Logo
+      Form
+      Contact Information/Resources
+      Footer
+  -->
 
   <div fxLayout="column" fxFlex.gt-md="1 0 30%" class="login-container">
 
-    <!-- First row we have language selector in the right of row -->
+    <!-- Language Selector to the extreme right -->
     <div fxLayout="row-reverse" fxFlex="1 0 auto">
-      <mat-form-field class="p-r-10 p-t-10 language-selector">
-        <mat-select placeholder="Language" [(ngModel)]="language">
-          <mat-option *ngFor="let language of languages" [value]="language">
-            {{ language }}
-          </mat-option>
-        </mat-select>
-      </mat-form-field>
+      <mifosx-language-selector class="p-r-10 p-t-10"></mifosx-language-selector>
     </div>
 
-    <!-- Next we have the logo -->
+    <!-- Logo with Organisation Name -->
     <div fxLayout="row" fxLayoutAlign="center center" fxFlex="1 0 auto">
-      <img src="assets/images/mifos-logo-flat.png" alt="" class="img-container">
+      <img src="assets/images/mifos-logo-flat.png" alt="Mifos X Logo" class="img-container">
     </div>
 
-    <!-- Next we have the type of form -->
+    <!--
+      Type of Form:
+        Login
+        Reset Password
+        Two Factor Authentication
+        Forgot Password (TODO: Decision to be taken on providing this feature.)
+    -->
     <div fxLayout="row" fxFlex="3 0 auto" fxLayoutAlign="center start">
       <mifosx-login-form *ngIf="!resetPassword && !twoFactorAuthenticationRequired"></mifosx-login-form>
       <mifosx-reset-password *ngIf="resetPassword"></mifosx-reset-password>
       <mifosx-two-factor-authentication *ngIf="twoFactorAuthenticationRequired"></mifosx-two-factor-authentication>
-      <!-- TODO: Discuss about providing a feature of Forgot password -->
     </div>
 
-    <!-- Footer -->
-    <mat-list fxHide.lt-md fxLayout="row" fxFlexAlign="center" fxFlex="3 0 auto" class="list">
+    <!-- Contact Information/Resources (hidden on smaller screens) -->
+    <mat-list fxHide.lt-md fxLayout="row" fxFlexAlign="center" fxFlex="3 0 auto" class="information-list">
       <mat-list-item><button mat-button [matMenuTriggerFor]="resourcesMenu">Resources</button></mat-list-item>
       <mat-list-item><button mat-button [matMenuTriggerFor]="communityMenu">Community</button></mat-list-item>
       <mat-list-item><button mat-button [matMenuTriggerFor]="contributeMenu">Contribute</button></mat-list-item>
     </mat-list>
 
-    <div fxLayout="column" fxFlexAlign="center" fxFlex="1 0 auto">
-      <mat-divider class="divider"></mat-divider>
-      <p fxFlexAlign="center">Version {{ version }}</p>
-      <p fxFlexAlign="center">Mifos X is up to date</p>
-    </div>
+    <!-- Footer -->
+    <mifosx-footer></mifosx-footer>
 
   </div>
 
 </div>
 
+<!-- Contact Information/Resources Menus -->
 <mat-menu #resourcesMenu="matMenu">
-  <a href="https://mifosforge.jira.com/wiki/spaces/docs/pages/52035622/User+Manual" mat-menu-item>User Manual</a>
-  <a href="https://cwiki.apache.org/confluence/display/FINERACT/Apache+Fineract+1.0+Functional+Specifications" mat-menu-item>Functional Specifications</a>
-  <a href="https://cwiki.apache.org/confluence/display/FINERACT/Contributor%27s+Zone" mat-menu-item>Developer Zone</a>
+  <a href="https://mifosforge.jira.com/wiki/spaces/docs/pages/52035622/User+Manual" target="_blank" mat-menu-item>User Manual</a>
+  <a href="https://cwiki.apache.org/confluence/display/FINERACT/Apache+Fineract+1.0+Functional+Specifications" target="_blank" mat-menu-item>Functional Specifications</a>
+  <a href="https://cwiki.apache.org/confluence/display/FINERACT/Contributor%27s+Zone" target="_blank" mat-menu-item>Developer Zone</a>
 </mat-menu>
 
 <mat-menu #communityMenu="matMenu">
-  <a href="https://groups.google.com/forum/#!forum/mifosusers" mat-menu-item>User Group</a>
-  <a href="https://groups.google.com/forum/#!forum/mifosdeveloper" mat-menu-item>Developer Group</a>
-  <a href="http://mifos.org/resources/community/communications/#mifos-irc" mat-menu-item>IRC</a>
+  <a href="https://groups.google.com/forum/#!forum/mifosusers" target="_blank" mat-menu-item>User Group</a>
+  <a href="https://groups.google.com/forum/#!forum/mifosdeveloper" target="_blank" mat-menu-item>Developer Group</a>
+  <a href="http://mifos.org/resources/community/communications/#mifos-irc" target="_blank" mat-menu-item>IRC</a>
 </mat-menu>
 
 <mat-menu #contributeMenu="matMenu">
-  <a href="https://mifosforge.jira.com/wiki/spaces/MDZ/pages/92012624/Key+Design+Principles" mat-menu-item>Key Design Principles</a>
-  <a href="https://sourceforge.net/projects/mifos/" mat-menu-item>Working with Code</a>
-  <a href="http://mifos.org/donate/" mat-menu-item>Donate</a>
+  <a href="https://mifosforge.jira.com/wiki/spaces/MDZ/pages/92012624/Key+Design+Principles" target="_blank" mat-menu-item>Key Design Principles</a>
+  <a href="https://sourceforge.net/projects/mifos/" target="_blank" mat-menu-item>Working with Code</a>
+  <a href="http://mifos.org/donate/" target="_blank" mat-menu-item>Donate</a>
 </mat-menu>

src/app/login/login.component.scss

@@ -1,100 +1,56 @@
 .cover {
   background: url("../../assets/images/cover_image.jpg") no-repeat center center;
   background-size: cover;
-  // opacity: 0.4
   position: relative;
-  z-index: 0;;
+  z-index: 0;
   max-width: 70vw;
-}
 
-.cover::after {
-  content: '';
-  opacity: 0.4;
-  background: linear-gradient(black, black);
-  width: 100%;
-  height: 100%;
-  opacity: 0.6;
-  top: 0;
-  left: 0;
-  display: block;
-  z-index: 1;
-  position: absolute;
-}
+  &::after {
+    content: "";
+    opacity: 0.5;
+    background: linear-gradient(#000, #000);
+    width: 100%;
+    height: 100%;
+    top: 0;
+    left: 0;
+    display: block;
+    z-index: 1;
+    position: absolute;
+  }
 
-.cover-content {
-  display: block;
-  max-width: 80%;
-  margin: 100px;
-  color: white;
-  text-align: justify;
-  z-index: 2;
+  .cover-content {
+    display: block;
+    max-width: 80%;
+    margin: 100px;
+    color: #fff;
+    text-align: justify;
+    z-index: 2;
 
-  p {
-    a {
-      text-decoration: underline;
-      color: white;
-     }
+    .cover-title {
+      border-bottom: 2px solid #fff;
+      margin: 0 0 20px;
+      padding-bottom: 10px;
+    }
 
-     a:hover {
-       color: lightgray;
-     }
+    .cover-description {
+      .cover-link {
+        text-decoration: underline;
+        color: #fff;
+
+        &:hover {
+          color: #d3d3d3;
+        }
+      }
+    }
   }
 }
 
-.cover-title {
-  border-bottom: 2px solid white;
-  margin: 0 0 20px;
-  padding-bottom: 10px;
-}
-
 .login-container {
-  box-shadow: 1px 1px 50px black;
+  box-shadow: 1px 1px 50px #000;
   height: 100vh;
   overflow: auto;
+
+  .img-container {
+    max-width: 18rem;
+  }
 }
-
-.language-selector {
-  max-width: 4rem;
-}
-
-.img-container {
-  max-width: 18rem;
-}
-
-p {
-  margin: 0;
-}
-
-.divider {
-  margin: 10px 30px;
-}
-
-// @import "../../theme/theme-variables";
-// @import "~bootstrap/scss/mixins/_breakpoints";
-
-// .login-container {
-//   position: absolute;
-//   top: 0;
-//   bottom: 0;
-//   left: 0;
-//   right: 0;
-// }
-
-// .login-box {
-//   display: flex;
-//   flex-direction: column;
-//   justify-content: center;
-//   align-items: center;
-//   width: 100%;
-//   min-height: 100%;
-// }
-
-// .ng-invalid.ng-touched:not(form) {
-//   border-left: 4px solid theme-color("danger");
-// }
-
-// @include media-breakpoint-down(xs) {
-//   .container {
-//     width: 100%;
-//   }
-// }

src/app/login/login.component.spec.ts

@@ -1,25 +1,14 @@
 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
-import { RouterTestingModule } from '@angular/router/testing';
-import { ReactiveFormsModule } from '@angular/forms';
 
-import { TranslateModule } from '@ngx-translate/core';
-
-import { CoreModule } from '../core';
 import { LoginComponent } from './login.component';
 
-describe('LoginComponent', () => {
+describe('LanguageSelectorComponent', () => {
   let component: LoginComponent;
   let fixture: ComponentFixture<LoginComponent>;
 
   beforeEach(async(() => {
     TestBed.configureTestingModule({
-      imports: [
-        RouterTestingModule,
-        TranslateModule.forRoot(),
-        ReactiveFormsModule,
-        CoreModule
-      ],
-      declarations: [LoginComponent]
+      declarations: [ LoginComponent ]
     })
     .compileComponents();
   }));

src/app/login/login.component.ts

@@ -1,11 +1,16 @@
+/** Angular Imports */
 import { Component, OnInit, OnDestroy } from '@angular/core';
 import { Router } from '@angular/router';
 
-import { I18nService } from '../core/i18n.service';
-import { AlertService } from '../core/alert.service';
+/** rxjs Imports */
+import { Subscription } from 'rxjs';
 
-import { environment } from '../../environments/environment';
+/** Custom Services and Models */
+import { AlertService, Alert } from '../core';
 
+/**
+ * Login component.
+ */
 @Component({
   selector: 'mifosx-login',
   templateUrl: './login.component.html',
@@ -13,19 +18,25 @@ import { environment } from '../../environments/environment';
 })
 export class LoginComponent implements OnInit, OnDestroy {
 
-  version: string = environment.version;
-  languages = ['en-US', 'fr-FR'];
-  language = this.languages[0];
+  /** True if password requires a reset. */
   resetPassword = false;
+  /** True if user requires two factor authentication. */
   twoFactorAuthenticationRequired = false;
-  alert$: any;
+  /** Subscription to alerts. */
+  alert$: Subscription;
 
-  constructor(private i18nService: I18nService,
-              private alertService: AlertService,
+  /**
+   * @param {AlertService} alertService Alert Service.
+   * @param {Router} router Router for navigation.
+   */
+  constructor(private alertService: AlertService,
               private router: Router) { }
 
+  /**
+   * Subscribes to alert event of alert service.
+   */
   ngOnInit() {
-    this.alert$ = this.alertService.alertEvent.subscribe((alertEvent: any) => {
+    this.alert$ = this.alertService.alertEvent.subscribe((alertEvent: Alert) => {
       const alertType = alertEvent.type;
       if (alertType === 'Password Expired') {
         this.twoFactorAuthenticationRequired = false;
@@ -41,18 +52,9 @@ export class LoginComponent implements OnInit, OnDestroy {
     });
   }
 
-  setLanguage(language: string) {
-    this.i18nService.language = language;
-  }
-
-  get currentLanguage(): string {
-    return this.i18nService.language;
-  }
-
-  // get languages(): string[] {
-  //   return this.i18nService.supportedLanguages;
-  // }
-
+  /**
+   * Unsubscribes from alerts.
+   */
   ngOnDestroy() {
     this.alert$.unsubscribe();
   }

src/app/login/login.module.ts

@@ -1,30 +1,31 @@
+/** Angular Imports */
 import { NgModule } from '@angular/core';
-import { CommonModule } from '@angular/common';
-import { ReactiveFormsModule, FormsModule } from '@angular/forms';
-
-import { TranslateModule } from '@ngx-translate/core';
 
+/** Custom Modules */
+import { SharedModule } from '../shared';
 import { LoginRoutingModule } from './login-routing.module';
-import { LoginComponent } from './login.component';
-import { CoreModule } from '../core/core.module';
-import { LoginFormComponent } from './login-form/login-form.component';
-import { TwoFactorAuthenticationComponent } from './two-factor-authentication/two-factor-authentication.component';
-import { ResetPasswordComponent } from './reset-password/reset-password.component';
 
+/** Custom Components */
+import { LoginComponent } from './login.component';
+import { LoginFormComponent } from './login-form/login-form.component';
+import { ResetPasswordComponent } from './reset-password/reset-password.component';
+import { TwoFactorAuthenticationComponent } from './two-factor-authentication/two-factor-authentication.component';
+
+/**
+ * Login Module
+ *
+ * All components related to user authentication should be declared here.
+ */
 @NgModule({
   imports: [
-    CommonModule,
-    CoreModule,
-    FormsModule,
-    ReactiveFormsModule,
-    TranslateModule,
+    SharedModule,
     LoginRoutingModule
   ],
   declarations: [
     LoginComponent,
     LoginFormComponent,
-    TwoFactorAuthenticationComponent,
-    ResetPasswordComponent
+    ResetPasswordComponent,
+    TwoFactorAuthenticationComponent
   ]
 })
 export class LoginModule { }

src/app/login/reset-password/confirm-password.validator.ts

@@ -0,0 +1,9 @@
+/** Angular Imports */
+import { FormGroup, ValidatorFn, ValidationErrors } from '@angular/forms';
+
+/** Validates that the values of password and confirm password are same. */
+export const confirmPasswordValidator: ValidatorFn = (resetPasswordForm: FormGroup): ValidationErrors | null => {
+  const password = resetPasswordForm.get('password');
+  const confirmPassword = resetPasswordForm.get('repeatPassword');
+  return password && confirmPassword && password.value !== confirmPassword.value ?  { 'passwordsDoNotMatch': true } : null;
+};

src/app/login/reset-password/reset-password.component.html

@@ -1,31 +1,44 @@
 <p>Please update your password:</p>
+
 <mat-divider></mat-divider>
-<form fxLayout="column" [formGroup]="resetPasswordForm" (ngSubmit)="resetPassword()">
-  <mat-form-field fxFlexAlign="center" class="textfield">
-    <span matPrefix><mat-icon>lock</mat-icon>&nbsp;&nbsp;</span>
-    <input type="{{ passwordInputType }}" matInput placeholder="Password" formControlName="password">
+
+<form fxLayout="column" [formGroup]="resetPasswordForm" (ngSubmit)="resetPassword()" id="reset-password-form">
+
+  <mat-form-field fxFlexAlign="center" class="reset-password-input">
+    <span matPrefix>
+      <fa-icon icon="lock" size="lg"></fa-icon>&nbsp;&nbsp;
+    </span>
+    <mat-label>Password</mat-label>
+    <input type="{{ passwordInputType }}" matInput required formControlName="password">
     <button mat-button *ngIf="resetPasswordForm.controls.password.value && !loading" matSuffix mat-icon-button
-    aria-label="Clear" (mousedown)="passwordInputType = 'text'" (mouseup)="passwordInputType = 'password'">
-      <mat-icon *ngIf="passwordInputType === 'password'">visibility</mat-icon>
-      <mat-icon *ngIf="passwordInputType === 'text'">visibility_off</mat-icon>
+      (mousedown)="passwordInputType = 'text'" (mouseup)="passwordInputType = 'password'">
+      <fa-icon *ngIf="passwordInputType === 'password'" icon="eye"></fa-icon>
+      <fa-icon *ngIf="passwordInputType === 'text'" icon="eye-slash"></fa-icon>
     </button>
     <mat-error *ngIf="resetPasswordForm.controls.password.hasError('required')">
       Password is <strong>required</strong>
     </mat-error>
   </mat-form-field>
-  <mat-form-field fxFlexAlign="center" class="textfield">
-    <span matPrefix><mat-icon>check_circle</mat-icon>&nbsp;&nbsp;</span>
-    <input type="password" matInput placeholder="Confirm Password" formControlName="repeatPassword">
+
+  <mat-form-field fxFlexAlign="center" class="reset-password-input">
+    <span matPrefix>
+      <fa-icon icon="check-circle" size="lg"></fa-icon>&nbsp;&nbsp;
+    </span>
+    <mat-label>Confirm Password</mat-label>
+    <input type="password" matInput required formControlName="repeatPassword">
     <mat-error *ngIf="resetPasswordForm.controls.repeatPassword.hasError('required')">
       Confirm Password is <strong>required</strong>
     </mat-error>
   </mat-form-field>
-  <p class="error" *ngIf="resetPasswordForm.errors?.passwordsDoNotMatch &&
-  (!resetPasswordForm.controls.password.hasError('required') && !resetPasswordForm.controls.repeatPassword.hasError('required'))">
+
+  <p class="reset-password-error" *ngIf="resetPasswordForm.errors?.passwordsDoNotMatch &&
+    (!resetPasswordForm.controls.password.hasError('required') && !resetPasswordForm.controls.repeatPassword.hasError('required'))">
     Passwords <strong>do not match</strong>
   </p>
-  <button mat-raised-button color="primary" fxFlexAlign="center" class="btn" [disabled]="!resetPasswordForm.valid">
+
+  <button mat-raised-button color="primary" fxFlexAlign="center" class="reset-password-button" [disabled]="!resetPasswordForm.valid">
     Reset Password
     <mat-spinner [diameter]="20" *ngIf="loading"></mat-spinner>
   </button>
+
 </form>

src/app/login/reset-password/reset-password.component.scss

@@ -1,21 +1,22 @@
-.textfield {
-  width: 14rem;
-  margin-top: 0.6rem;
-}
+#reset-password-form {
+  .reset-password-input {
+    width: 14rem;
+    margin-top: 0.6rem;
+  }
 
-.btn {
-  width: 14rem;
-  margin-top: 1rem;
-}
+  .reset-password-button {
+    width: 14rem;
+    margin-top: 1rem;
+  }
 
-.error {
-  color: #f44336;
-  font-size: 80%;
-  margin: 0;
-}
+  .reset-password-error {
+    color: #f44336;
+    font-size: 80%;
+    margin: 0;
+  }
 
-mat-spinner {
-  z-index: 4;
-  float: right;
-  margin: 0.5rem 0;
+  mat-spinner {
+    float: right;
+    margin: 0.5rem 0;
+  }
 }

src/app/login/reset-password/reset-password.component.ts

@@ -1,14 +1,19 @@
-import { Component, OnInit, Input } from '@angular/core';
-import { FormGroup, FormBuilder, Validators, ValidatorFn, ValidationErrors } from '@angular/forms';
-import { AuthenticationService } from '../../core';
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+import { FormGroup, FormBuilder, Validators } from '@angular/forms';
+
+/** rxjs Imports */
 import { finalize } from 'rxjs/operators';
 
-const confirmPasswordValidator: ValidatorFn = (resetPasswordForm: FormGroup): ValidationErrors | null => {
-  const password = resetPasswordForm.controls.password;
-  const confirmPassword = resetPasswordForm.controls.repeatPassword;
-  return password && confirmPassword && password.value !== confirmPassword.value ?  { 'passwordsDoNotMatch': true } : null;
-};
+/** Custom Services */
+import { AuthenticationService } from '../../core';
 
+/** Custom Validators */
+import { confirmPasswordValidator } from './confirm-password.validator';
+
+/**
+ * Reset password component.
+ */
 @Component({
   selector: 'mifosx-reset-password',
   templateUrl: './reset-password.component.html',
@@ -16,25 +21,33 @@ const confirmPasswordValidator: ValidatorFn = (resetPasswordForm: FormGroup): Va
 })
 export class ResetPasswordComponent implements OnInit {
 
+  /** Reset password form group. */
   resetPasswordForm: FormGroup;
-  loading = false;
+  /** Password input field type. */
   passwordInputType: string;
+  /** True if loading. */
+  loading = false;
 
+  /**
+   * @param {FormBuilder} formBuilder Form Builder.
+   * @param {AuthenticationService} authenticationService Authentication Service.
+   */
   constructor(private formBuilder: FormBuilder,
               private authenticationService: AuthenticationService) {  }
 
+  /**
+   * Creates reset password form.
+   *
+   * Initializes password input field type.
+   */
   ngOnInit() {
     this.createResetPasswordForm();
     this.passwordInputType = 'password';
   }
 
-  private createResetPasswordForm() {
-    this.resetPasswordForm = this.formBuilder.group({
-      'password': ['', Validators.required],
-      'repeatPassword': ['', Validators.required]
-    }, { validator: confirmPasswordValidator });
-  }
-
+  /**
+   * Resets the password of user.
+   */
   resetPassword() {
     this.loading = true;
     this.resetPasswordForm.disable();
@@ -42,10 +55,20 @@ export class ResetPasswordComponent implements OnInit {
       .pipe(finalize(() => {
         this.resetPasswordForm.reset();
         this.resetPasswordForm.markAsPristine();
-        // Bug: Validation errors won't get removed on reset
+        // Angular Material Bug: Validation errors won't get removed on reset.
         this.resetPasswordForm.enable();
         this.loading = false;
       })).subscribe();
   }
 
+  /**
+   * Creates reset password form.
+   */
+  private createResetPasswordForm() {
+    this.resetPasswordForm = this.formBuilder.group({
+      'password': ['', Validators.required],
+      'repeatPassword': ['', Validators.required]
+    }, { validator: confirmPasswordValidator });
+  }
+
 }

src/app/login/two-factor-authentication/two-factor-authentication.component.html

@@ -1,37 +1,60 @@
 <p><strong>Two Factor Authentication</strong></p>
+
 <mat-divider></mat-divider>
+
+<!-- Select delivery method to receive OTP -->
 <p *ngIf="!otpRequested">Please select a delivery method:</p>
-<form fxLayout="column" *ngIf="!otpRequested" [formGroup]="twoFactorAuthenticationDeliveryMethodForm" (ngSubmit)="requestOTP()">
+
+<form fxLayout="column" *ngIf="!otpRequested" [formGroup]="twoFactorAuthenticationDeliveryMethodForm" class="two-factor-auth-form"
+  (ngSubmit)="requestOTP()">
+
   <mat-radio-group fxLayout="column" fxFlexAlign="center" formControlName="twoFactorAuthenticationDeliveryMethod">
     <mat-radio-button *ngFor="let twoFactorAuthenticationDeliveryMethod of twoFactorAuthenticationDeliveryMethods"
       [value]="twoFactorAuthenticationDeliveryMethod">
         Send {{ twoFactorAuthenticationDeliveryMethod.name }} to {{ twoFactorAuthenticationDeliveryMethod.target }}
     </mat-radio-button>
   </mat-radio-group>
+
   <button mat-raised-button color="primary" fxFlexAlign="center" fxFlexFill [disabled]="!twoFactorAuthenticationDeliveryMethodForm.valid">
     Request OTP
     <mat-spinner [diameter]="20" *ngIf="loading"></mat-spinner>
   </button>
+
 </form>
 
- <!-- show input for otp request -->
+<!-- Show input for OTP -->
 <p *ngIf="otpRequested">Please enter the OTP:</p>
-<form fxLayout="column" *ngIf="otpRequested" [formGroup]="twoFactorAuthenticationForm" (ngSubmit)="validateOTP()">
-  <mat-form-field fxFlexAlign="center" class="textfield">
-    <span matPrefix><mat-icon>verified_user</mat-icon>&nbsp;&nbsp;</span>
-    <input matInput placeholder="OTP" autocomplete="off" formControlName="otp">
-    <mat-hint align="start"><strong>Delivery Method:</strong> {{ selectedTwoFactorAuthenticationDeliveryMethod.name }} </mat-hint>
-    <mat-hint align="end"><strong>Validity:</strong> {{ tokenValidityTime / 60 }} mins </mat-hint>
+
+<form fxLayout="column" *ngIf="otpRequested" [formGroup]="twoFactorAuthenticationForm" class="two-factor-auth-form"
+  (ngSubmit)="validateOTP()">
+
+  <mat-form-field fxFlexAlign="center" class="two-factor-auth-input">
+    <span matPrefix>
+      <fa-icon icon="user-shield"></fa-icon>&nbsp;&nbsp;
+    </span>
+    <mat-label>OTP</mat-label>
+    <input type="password" matInput autocomplete="off" required formControlName="otp">
+    <mat-hint align="start">
+      <strong>Delivery Method:</strong> {{ selectedTwoFactorAuthenticationDeliveryMethod.name }}
+    </mat-hint>
+    <mat-hint align="end">
+      <strong>Validity:</strong> {{ tokenValidityTime / 60 }} mins
+    </mat-hint>
     <mat-error *ngIf="twoFactorAuthenticationForm.controls.otp.hasError('required')">
       OTP is <strong>required</strong>
     </mat-error>
   </mat-form-field>
-  <button mat-raised-button color="primary" fxFlexAlign="center" class="btn" [disabled]="!twoFactorAuthenticationForm.valid">
+
+  <button mat-raised-button color="primary" fxFlexAlign="center" class="two-factor-auth-button"
+    [disabled]="!twoFactorAuthenticationForm.valid">
     Validate OTP
     <mat-spinner [diameter]="20" *ngIf="loading"></mat-spinner>
   </button>
-  <button type="button" mat-button fxFlexAlign="center" class="btn" (click)="resendOTP()" [disabled]="loading || resendOTPLoading">
+
+  <button type="button" mat-button fxFlexAlign="center" class="two-factor-auth-button" (click)="resendOTP()"
+    [disabled]="loading || resendOTPLoading">
     Resend OTP
     <mat-spinner [diameter]="20" *ngIf="resendOTPLoading"></mat-spinner>
   </button>
+
 </form>

src/app/login/two-factor-authentication/two-factor-authentication.component.scss

@@ -1,22 +1,23 @@
-.btn {
-  width: 14rem;
-  margin-top: 0.5rem;
-}
+.two-factor-auth-form {
+  mat-radio-button {
+    margin-bottom: 0.5rem;
 
-mat-radio-button {
-  margin-bottom: 0.5rem;
-}
+    &:last-child {
+      margin-bottom: 1rem;
+    }
+  }
 
-mat-radio-button:last-child {
-  margin-bottom: 1rem;
-}
+  .two-factor-auth-button {
+    width: 14rem;
+    margin-top: 0.5rem;
+  }
 
-.textfield {
-  width: 14rem;
-}
+  .two-factor-auth-input {
+    width: 14rem;
+  }
 
-mat-spinner {
-  z-index: 4;
-  float: right;
-  margin: 0.5rem 0;
+  mat-spinner {
+    float: right;
+    margin: 0.5rem 0;
+  }
 }

src/app/login/two-factor-authentication/two-factor-authentication.component.ts

@@ -1,8 +1,16 @@
+/** Angular Imports */
 import { Component, OnInit } from '@angular/core';
 import { FormGroup, FormBuilder, Validators } from '@angular/forms';
-import { AuthenticationService } from '../../core';
+
+/** rxjs Imports */
 import { finalize } from 'rxjs/operators';
 
+/** Custom Services */
+import { AuthenticationService } from '../../core';
+
+/**
+ * Two factor authentication component.
+ */
 @Component({
   selector: 'mifosx-two-factor-authentication',
   templateUrl: './two-factor-authentication.component.html',
@@ -10,32 +18,46 @@ import { finalize } from 'rxjs/operators';
 })
 export class TwoFactorAuthenticationComponent implements OnInit {
 
+  /** Available delivery methods to receive OTP. */
   twoFactorAuthenticationDeliveryMethods: any;
+  /** Delivery method selected to receive OTP. */
   selectedTwoFactorAuthenticationDeliveryMethod: any;
-  loading = false;
-  resendOTPLoading = false;
+  /** True if OTP is requested. */
   otpRequested = false;
+  /** Time for which OTP is valid. */
   tokenValidityTime: number;
+  /** Two factor authentication delivery method form group. */
   twoFactorAuthenticationDeliveryMethodForm: FormGroup;
+  /** Two factor authentication form group. */
   twoFactorAuthenticationForm: FormGroup;
+  /** True if loading. */
+  loading = false;
+  /** True if loading. */
+  resendOTPLoading = false;
 
+  /**
+   * @param {FormBuilder} formBuilder Form Builder.
+   * @param {AuthenticationService} authenticationService Authentication Service.
+   */
   constructor(private formBuilder: FormBuilder,
               private authenticationService: AuthenticationService) {  }
 
+  /**
+   * Creates two factor authentication delivery method form.
+   *
+   * Gets the delivery methods available to receive OTP.
+   */
   ngOnInit() {
     this.createTwoFactorAuthenticationDeliveryMethodForm();
     this.authenticationService.getDeliveryMethods()
-      .subscribe(deliveryMethods => {
+      .subscribe((deliveryMethods: any) => {
         this.twoFactorAuthenticationDeliveryMethods = deliveryMethods;
       });
   }
 
-  private createTwoFactorAuthenticationDeliveryMethodForm() {
-    this.twoFactorAuthenticationDeliveryMethodForm = this.formBuilder.group({
-      'twoFactorAuthenticationDeliveryMethod': ['', Validators.required]
-    });
-  }
-
+  /**
+   * Requests OTP via the selected delivery method.
+   */
   requestOTP() {
     this.loading = true;
     this.twoFactorAuthenticationDeliveryMethodForm.disable();
@@ -46,7 +68,7 @@ export class TwoFactorAuthenticationComponent implements OnInit {
       .pipe(finalize(() => {
         this.twoFactorAuthenticationDeliveryMethodForm.reset();
         this.twoFactorAuthenticationDeliveryMethodForm.markAsPristine();
-        // Bug: Validation errors won't get removed on reset
+        // Angular Material Bug: Validation errors won't get removed on reset.
         this.twoFactorAuthenticationDeliveryMethodForm.enable();
         this.loading = false;
       }))
@@ -57,12 +79,9 @@ export class TwoFactorAuthenticationComponent implements OnInit {
       });
   }
 
-  private createTwoFactorAuthenticationForm() {
-    this.twoFactorAuthenticationForm = this.formBuilder.group({
-      'otp': ['', Validators.required]
-    });
-  }
-
+  /**
+   * Validates the OTP and authenticates the user.
+   */
   validateOTP() {
     this.loading = true;
     this.twoFactorAuthenticationForm.disable();
@@ -70,12 +89,15 @@ export class TwoFactorAuthenticationComponent implements OnInit {
       .pipe(finalize(() => {
         this.twoFactorAuthenticationForm.reset();
         this.twoFactorAuthenticationForm.markAsPristine();
-        // Bug: Validation errors won't get removed on reset
+        // Angular Material Bug: Validation errors won't get removed on reset.
         this.twoFactorAuthenticationForm.enable();
         this.loading = false;
       })).subscribe();
   }
 
+  /**
+   * Resends OTP via the selected delivery method.
+   */
   resendOTP() {
     this.resendOTPLoading = true;
     this.twoFactorAuthenticationForm.disable();
@@ -83,9 +105,28 @@ export class TwoFactorAuthenticationComponent implements OnInit {
       .pipe(finalize(() => {
         this.twoFactorAuthenticationForm.reset();
         this.twoFactorAuthenticationForm.markAsPristine();
-        // Bug: Validation errors won't get removed on reset
+        // Angular Material Bug: Validation errors won't get removed on reset.
         this.twoFactorAuthenticationForm.enable();
         this.resendOTPLoading = false;
       })).subscribe();
   }
+
+  /**
+   * Creates two factor authentication delivery method form.
+   */
+  private createTwoFactorAuthenticationDeliveryMethodForm() {
+    this.twoFactorAuthenticationDeliveryMethodForm = this.formBuilder.group({
+      'twoFactorAuthenticationDeliveryMethod': ['', Validators.required]
+    });
+  }
+
+  /**
+   * Creates two factor authentication form.
+   */
+  private createTwoFactorAuthenticationForm() {
+    this.twoFactorAuthenticationForm = this.formBuilder.group({
+      'otp': ['', Validators.required]
+    });
+  }
+
 }

src/app/shared/delete-dialog/delete-dialog.component.ts

@@ -13,8 +13,8 @@ import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
 export class DeleteDialogComponent implements OnInit {
 
   /**
-   * @param dialogRef Component reference to dialog.
-   * @param data Provides a deleteContext.
+   * @param {MatDialogRef} dialogRef Component reference to dialog.
+   * @param {any} data Provides a deleteContext.
    */
   constructor(public dialogRef: MatDialogRef<DeleteDialogComponent>,
               @Inject(MAT_DIALOG_DATA) public data: any) { }

src/app/shared/file-upload/file-upload.component.ts

@@ -21,7 +21,7 @@ export class FileUploadComponent implements OnInit {
 
   /**
    * Uploads a file.
-   * @param {any} $event The file input change event.
+   * @param {any} event The file input change event.
    */
   onFileSelected($event: any) {
     this.fileName = $event.target.files[0].name;

src/app/shared/footer/footer.component.html

@@ -0,0 +1,5 @@
+<div fxLayout="column" id="footer" class="m-b-20">
+  <mat-divider fxFlexAlign="center" class="divider"></mat-divider>
+  <p fxFlexAlign="center" class="footer-content">Version {{ version }}</p>
+  <p fxFlexAlign="center" class="footer-content">Mifos X is up to date</p>
+</div>

src/app/shared/footer/footer.component.scss

@@ -0,0 +1,10 @@
+#footer {
+  .divider {
+    margin: 1rem 1rem 0.5rem;
+    width: 4rem;
+  }
+
+  .footer-content {
+    margin: 0;
+  }
+}

src/app/shared/footer/footer.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { FooterComponent } from './footer.component';
+
+describe('FooterComponent', () => {
+  let component: FooterComponent;
+  let fixture: ComponentFixture<FooterComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ FooterComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(FooterComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/shared/footer/footer.component.ts

@@ -0,0 +1,25 @@
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+
+/** Environment Configuration */
+import { environment } from 'environments/environment';
+
+/**
+ *  Footer component.
+ */
+@Component({
+  selector: 'mifosx-footer',
+  templateUrl: './footer.component.html',
+  styleUrls: ['./footer.component.scss']
+})
+export class FooterComponent implements OnInit {
+
+  /** Mifos X version. */
+  version: string = environment.version;
+
+  constructor() { }
+
+  ngOnInit() {
+  }
+
+}

src/app/shared/icons.module.ts

@@ -5,18 +5,31 @@ import { NgModule } from '@angular/core';
 import { FontAwesomeModule } from '@fortawesome/angular-fontawesome';
 import { library } from '@fortawesome/fontawesome-svg-core';
 import {
+  faCheckCircle,
+  faEye,
+  faEyeSlash,
   faFileUpload,
-  faSearch
+  faLock,
+  faSearch,
+  faUserCircle,
+  faUserShield
 } from '@fortawesome/free-solid-svg-icons';
 
 /** Add icons to the library for convenient access in other components. */
 library.add(
+  faCheckCircle,
+  faEye,
+  faEyeSlash,
   faFileUpload,
-  faSearch
+  faLock,
+  faSearch,
+  faUserCircle,
+  faUserShield
 );
 
 /**
  * Icons Module
+ *
  * Angular Font Awesome module is exported here.
  */
 @NgModule({

src/app/shared/index.ts

@@ -1,2 +1,2 @@
-export * from './shared.module';
+export { SharedModule } from './shared.module';
 export { DeleteDialogComponent } from './delete-dialog/delete-dialog.component';

src/app/shared/language-selector/language-selector.component.html

@@ -0,0 +1,8 @@
+<mat-form-field id="language-selector">
+  <mat-label>Language</mat-label>
+  <mat-select [formControl]="languageSelector">
+    <mat-option *ngFor="let language of languages" [value]="language">
+      {{ language }}
+    </mat-option>
+  </mat-select>
+</mat-form-field>

src/app/shared/language-selector/language-selector.component.scss

@@ -0,0 +1,3 @@
+#language-selector {
+  max-width: 4rem;
+}

src/app/shared/language-selector/language-selector.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { LanguageSelectorComponent } from './language-selector.component';
+
+describe('LanguageSelectorComponent', () => {
+  let component: LanguageSelectorComponent;
+  let fixture: ComponentFixture<LanguageSelectorComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ LanguageSelectorComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(LanguageSelectorComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/shared/language-selector/language-selector.component.ts

@@ -0,0 +1,59 @@
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+import { FormControl } from '@angular/forms';
+
+/** Custom Services */
+import { I18nService } from 'app/core';
+
+/**
+ * Language selector component.
+ *
+ * TODO: Decision to be taken on using ngx-translate or angular-internationalization
+ *       to provide language support in the application.
+ */
+@Component({
+  selector: 'mifosx-language-selector',
+  templateUrl: './language-selector.component.html',
+  styleUrls: ['./language-selector.component.scss']
+})
+export class LanguageSelectorComponent implements OnInit {
+
+  /** Language selector form control. */
+  languageSelector = new FormControl();
+
+  /**
+   * Sets the language of the application in the selector on initial setup.
+   * @param {I18nService} i18nService Internationalization Service.
+   */
+  constructor(private i18nService: I18nService) {
+    this.languageSelector.setValue(this.currentLanguage);
+  }
+
+  ngOnInit() {
+  }
+
+  /**
+   * Sets a new language to be used by the application.
+   * @param {string} language New language.
+   */
+  setLanguage(language: string) {
+    this.i18nService.language = language;
+  }
+
+  /**
+   * Returns the current language used by the application.
+   * @returns {string} Current language.
+   */
+  get currentLanguage(): string {
+    return this.i18nService.language;
+  }
+
+  /**
+   * Returns all the languages supported by the application.
+   * @return {string[]} Supported languages.
+   */
+  get languages(): string[] {
+    return this.i18nService.supportedLanguages;
+  }
+
+}

src/app/shared/material.module.ts

@@ -41,6 +41,7 @@ import {
 
 /**
  * Material Module
+ *
  * Angular CDK, Angular Material and Flex Layout modules are exported here.
  */
 @NgModule({

src/app/shared/shared.module.ts

@@ -1,34 +1,44 @@
  /** Angular Imports */
 import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
+import { ReactiveFormsModule } from '@angular/forms';
 
 /** Custom Components */
-import { FileUploadComponent } from './file-upload/file-upload.component';
 import { DeleteDialogComponent } from './delete-dialog/delete-dialog.component';
+import { FileUploadComponent } from './file-upload/file-upload.component';
+import { FooterComponent } from './footer/footer.component';
+import { LanguageSelectorComponent } from './language-selector/language-selector.component';
 
 /** Custom Modules */
-import { MaterialModule } from './material.module';
 import { IconsModule } from './icons.module';
+import { MaterialModule } from './material.module';
 
 /**
  * Shared Module
+ *
  * Modules and components that are shared throughout the application should be here.
  */
 @NgModule({
   imports: [
     CommonModule,
     IconsModule,
-    MaterialModule
+    MaterialModule,
+    ReactiveFormsModule
   ],
   declarations: [
     DeleteDialogComponent,
-    FileUploadComponent
+    FileUploadComponent,
+    FooterComponent,
+    LanguageSelectorComponent
   ],
   exports: [
     FileUploadComponent,
+    FooterComponent,
+    LanguageSelectorComponent,
     CommonModule,
     IconsModule,
-    MaterialModule
+    MaterialModule,
+    ReactiveFormsModule
   ],
   entryComponents: [
     DeleteDialogComponent