feat(system): view, edit, delete code (#380)

- Add view code component
- Add edit code component

Fixes: #379

src/app/system/codes/edit-code/edit-code.component.ts

@@ -0,0 +1,67 @@
+/** Angular Imports */
+import { Component, OnInit } from '@angular/core';
+import { FormGroup, FormBuilder, Validators } from '@angular/forms';
+import { ActivatedRoute, Router } from '@angular/router';
+
+/** Custom Services */
+import { SystemService } from '../../system.service';
+
+/**
+ * Edit Code Component.
+ */
+@Component({
+  selector: 'mifosx-edit-code',
+  templateUrl: './edit-code.component.html',
+  styleUrls: ['./edit-code.component.scss']
+})
+export class EditCodeComponent implements OnInit {
+
+  /** Code Form */
+  codeForm: FormGroup;
+  /** Code Data */
+  codeData: any;
+
+  /**
+   * Retrieves the code data from `resolve`.
+   * @param {FormBuilder} formBuilder Form Builder.
+   * @param {SystemService} systemService System Service.
+   * @param {ActivatedRoute} route Activated Route.
+   * @param {Router} router Router for navigation.
+   */
+  constructor(private formBuilder: FormBuilder,
+              private systemService: SystemService,
+              private route: ActivatedRoute,
+              private router: Router) {
+    this.route.data.subscribe((data: { code: any }) => {
+      this.codeData = data.code;
+    });
+  }
+
+  /**
+   * Creates and sets the code form.
+   */
+  ngOnInit() {
+    this.createCodeForm();
+  }
+
+  /**
+   * Creates and sets code form.
+   */
+  createCodeForm() {
+    this.codeForm = this.formBuilder.group({
+      'name': [this.codeData.name, Validators.required]
+    });
+  }
+
+  /**
+   * Submits the code form and updates code,
+   * if successful redirects to view updated code.
+   */
+  submit() {
+    this.systemService.updateCode(this.codeForm.value, this.codeData.id)
+      .subscribe((response: any) => {
+        this.router.navigate(['../../', response.resourceId], { relativeTo: this.route });
+      });
+  }
+
+}