feat: add loan button (undo disbursal) (#852)

Fixes: #827

src/app/loans/loans-view/loan-account-actions/undo-disbursal/undo-disbursal.component.html

@@ -0,0 +1,17 @@
+<div class="container">
+
+  <mat-card-content>
+
+    <mat-form-field fxLayoutAlign="center">
+      <mat-label>Note</mat-label>
+      <textarea matInput [formControl]="note"></textarea>
+    </mat-form-field>
+
+    <mat-card-actions fxLayout="row" fxLayout.xs="column" fxLayoutAlign="center" fxLayoutGap="5px">
+      <button type="button" mat-raised-button [routerLink]="['../general']">Cancel</button>
+      <button mat-raised-button color="primary" (click)="submit()" *mifosxHasPermission="'DISBURSALUNDO_LOAN'">Submit</button>
+    </mat-card-actions>
+
+  </mat-card-content>
+
+</div>

src/app/loans/loans-view/loan-account-actions/undo-disbursal/undo-disbursal.component.spec.ts

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

src/app/loans/loans-view/loan-account-actions/undo-disbursal/undo-disbursal.component.ts

@@ -0,0 +1,53 @@
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+import { FormControl, FormBuilder } from '@angular/forms';
+import { Router, ActivatedRoute } from '@angular/router';
+
+/** Custom Services */
+import { LoansService } from '../../../loans.service';
+
+/**
+ * Undo Disbursal component.
+ */
+@Component({
+  selector: 'mifosx-undo-disbursal',
+  templateUrl: './undo-disbursal.component.html',
+  styleUrls: ['./undo-disbursal.component.scss']
+})
+export class UndoDisbursalComponent implements OnInit {
+
+  /** Loan ID. */
+  loanId: any;
+  /** Undo disbursal form. */
+  note: FormControl;
+
+  /**
+   * @param {FormBuilder} formBuilder Form Builder.
+   * @param {LoansService} loansService Loans Service.
+   * @param {ActivatedRoute} route Activated Route.
+   * @param {Router} router Router for navigation.
+   */
+  constructor(private formBuilder: FormBuilder,
+              private loansService: LoansService,
+              private router: Router,
+              private route: ActivatedRoute) {
+    this.loanId = this.route.parent.snapshot.params['loanId'];
+  }
+
+  /**
+   * Creates the undo disbursal form.
+   */
+  ngOnInit() {
+    this.note = this.formBuilder.control('');
+  }
+
+  /**
+   * Submits the undo disbursal form.
+   */
+  submit() {
+    this.loansService.loanActionButtons(this.loanId, 'undoDisbursal', {'note': this.note.value}).subscribe((response: any) => {
+      this.router.navigate(['../general'], { relativeTo: this.route });
+    });
+  }
+
+}