refactored metadata views

src-ui/src/app/components/document-detail/metadata-collapse/metadata-collapse.component.html

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+<h6>
+  <button type="button" class="btn btn-outline-secondary btn-sm mr-2"
+      (click)="expand = !expand">
+      <svg class="buttonicon" fill="currentColor" *ngIf="!expand">
+          <use xlink:href="assets/bootstrap-icons.svg#caret-down" />
+      </svg>
+      <svg class="buttonicon" fill="currentColor" *ngIf="expand">
+          <use xlink:href="assets/bootstrap-icons.svg#caret-up" />
+      </svg>
+  </button>
+  {{title}}
+</h6>
+
+<div #collapse="ngbCollapse" [(ngbCollapse)]="!expand">
+  <table class="table table-borderless">
+      <tbody>
+          <tr *ngFor="let m of metadata">
+              <td>{{m.prefix}}:{{m.key}}</td>
+              <td>{{m.value}}</td>
+          </tr>
+      </tbody>
+  </table>
+</div>

src-ui/src/app/components/document-detail/metadata-collapse/metadata-collapse.component.spec.ts

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

src-ui/src/app/components/document-detail/metadata-collapse/metadata-collapse.component.ts

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+import { Component, Input, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-metadata-collapse',
+  templateUrl: './metadata-collapse.component.html',
+  styleUrls: ['./metadata-collapse.component.scss']
+})
+export class MetadataCollapseComponent implements OnInit {
+
+  constructor() { }
+
+  expand = false
+
+  @Input()
+  metadata
+
+  @Input()
+  title = "Metadata"
+
+  ngOnInit(): void {
+  }
+
+}