Merge pull request #1628 from 4Science/CST-5676

Bitstream edit page fixes

src/app/bitstream-page/bitstream-page-routing.module.ts

@@ -10,6 +10,9 @@ import { ResourcePolicyResolver } from '../shared/resource-policies/resolvers/re
 import { ResourcePolicyEditComponent } from '../shared/resource-policies/edit/resource-policy-edit.component';
 import { BitstreamAuthorizationsComponent } from './bitstream-authorizations/bitstream-authorizations.component';
 import { LegacyBitstreamUrlResolver } from './legacy-bitstream-url.resolver';
+import { BitstreamBreadcrumbResolver } from '../core/breadcrumbs/bitstream-breadcrumb.resolver';
+import { BitstreamBreadcrumbsService } from '../core/breadcrumbs/bitstream-breadcrumbs.service';
+import { I18nBreadcrumbResolver } from '../core/breadcrumbs/i18n-breadcrumb.resolver';
 
 const EDIT_BITSTREAM_PATH = ':id/edit';
 const EDIT_BITSTREAM_AUTHORIZATIONS_PATH = ':id/authorizations';
@@ -48,7 +51,8 @@ const EDIT_BITSTREAM_AUTHORIZATIONS_PATH = ':id/authorizations';
         path: EDIT_BITSTREAM_PATH,
         component: EditBitstreamPageComponent,
         resolve: {
-          bitstream: BitstreamPageResolver
+          bitstream: BitstreamPageResolver,
+          breadcrumb: BitstreamBreadcrumbResolver,
         },
         canActivate: [AuthenticatedGuard]
       },
@@ -67,15 +71,17 @@ const EDIT_BITSTREAM_AUTHORIZATIONS_PATH = ':id/authorizations';
           {
             path: 'edit',
             resolve: {
+              breadcrumb: I18nBreadcrumbResolver,
               resourcePolicy: ResourcePolicyResolver
             },
             component: ResourcePolicyEditComponent,
-            data: { title: 'resource-policies.edit.page.title', showBreadcrumbs: true }
+            data: { breadcrumbKey: 'item.edit', title: 'resource-policies.edit.page.title', showBreadcrumbs: true }
           },
           {
             path: '',
             resolve: {
-              bitstream: BitstreamPageResolver
+              bitstream: BitstreamPageResolver,
+              breadcrumb: BitstreamBreadcrumbResolver,
             },
             component: BitstreamAuthorizationsComponent,
             data: { title: 'bitstream.edit.authorizations.title', showBreadcrumbs: true }
@@ -86,6 +92,8 @@ const EDIT_BITSTREAM_AUTHORIZATIONS_PATH = ':id/authorizations';
   ],
   providers: [
     BitstreamPageResolver,
+    BitstreamBreadcrumbResolver,
+    BitstreamBreadcrumbsService
   ]
 })
 export class BitstreamPageRoutingModule {

src/app/bitstream-page/bitstream-page.resolver.ts

@@ -7,6 +7,15 @@ import { BitstreamDataService } from '../core/data/bitstream-data.service';
 import { followLink, FollowLinkConfig } from '../shared/utils/follow-link-config.model';
 import { getFirstCompletedRemoteData } from '../core/shared/operators';
 
+/**
+ * The self links defined in this list are expected to be requested somewhere in the near future
+ * Requesting them as embeds will limit the number of requests
+ */
+ export const BITSTREAM_PAGE_LINKS_TO_FOLLOW: FollowLinkConfig<Bitstream>[] = [
+  followLink('bundle', {}, followLink('item')),
+  followLink('format')
+];
+
 /**
  * This class represents a resolver that requests a specific bitstream before the route is activated
  */
@@ -34,9 +43,6 @@ export class BitstreamPageResolver implements Resolve<RemoteData<Bitstream>> {
      * Requesting them as embeds will limit the number of requests
      */
     get followLinks(): FollowLinkConfig<Bitstream>[] {
-        return [
-            followLink('bundle', {}, followLink('item')),
-            followLink('format')
-        ];
+      return BITSTREAM_PAGE_LINKS_TO_FOLLOW;
     }
 }

src/app/core/breadcrumbs/bitstream-breadcrumb.resolver.ts

@@ -0,0 +1,31 @@
+import { Injectable } from '@angular/core';
+
+import { FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { Bitstream } from '../shared/bitstream.model';
+import { BitstreamDataService } from '../data/bitstream-data.service';
+import { BITSTREAM_PAGE_LINKS_TO_FOLLOW } from '../../bitstream-page/bitstream-page.resolver';
+import { DSOBreadcrumbResolver } from './dso-breadcrumb.resolver';
+import { BitstreamBreadcrumbsService } from './bitstream-breadcrumbs.service';
+
+/**
+ * The class that resolves the BreadcrumbConfig object for an Item
+ */
+@Injectable({
+  providedIn: 'root'
+})
+export class BitstreamBreadcrumbResolver extends DSOBreadcrumbResolver<Bitstream> {
+  constructor(
+    protected breadcrumbService: BitstreamBreadcrumbsService, protected dataService: BitstreamDataService) {
+    super(breadcrumbService, dataService);
+  }
+
+  /**
+   * Method that returns the follow links to already resolve
+   * The self links defined in this list are expected to be requested somewhere in the near future
+   * Requesting them as embeds will limit the number of requests
+   */
+  get followLinks(): FollowLinkConfig<Bitstream>[] {
+    return BITSTREAM_PAGE_LINKS_TO_FOLLOW;
+  }
+
+}

src/app/core/breadcrumbs/bitstream-breadcrumbs.service.ts

@@ -0,0 +1,85 @@
+import { Injectable } from '@angular/core';
+
+import { Observable, of as observableOf } from 'rxjs';
+import { map, switchMap } from 'rxjs/operators';
+
+import { Breadcrumb } from '../../breadcrumbs/breadcrumb/breadcrumb.model';
+import { DSONameService } from './dso-name.service';
+import { ChildHALResource } from '../shared/child-hal-resource.model';
+import { LinkService } from '../cache/builders/link.service';
+import { DSpaceObject } from '../shared/dspace-object.model';
+import { RemoteData } from '../data/remote-data';
+import { hasValue, isNotEmpty } from '../../shared/empty.util';
+import { getDSORoute } from '../../app-routing-paths';
+import { DSOBreadcrumbsService } from './dso-breadcrumbs.service';
+import { BitstreamDataService } from '../data/bitstream-data.service';
+import { getFirstCompletedRemoteData, getRemoteDataPayload } from '../shared/operators';
+import { Bitstream } from '../shared/bitstream.model';
+import { Bundle } from '../shared/bundle.model';
+import { Item } from '../shared/item.model';
+import { BITSTREAM_PAGE_LINKS_TO_FOLLOW } from '../../bitstream-page/bitstream-page.resolver';
+
+/**
+ * Service to calculate DSpaceObject breadcrumbs for a single part of the route
+ */
+@Injectable({
+  providedIn: 'root'
+})
+export class BitstreamBreadcrumbsService extends DSOBreadcrumbsService {
+  constructor(
+    protected bitstreamService: BitstreamDataService,
+    protected linkService: LinkService,
+    protected dsoNameService: DSONameService
+  ) {
+    super(linkService, dsoNameService);
+  }
+
+  /**
+   * Method to recursively calculate the breadcrumbs
+   * This method returns the name and url of the key and all its parent DSOs recursively, top down
+   * @param key The key (a DSpaceObject) used to resolve the breadcrumb
+   * @param url The url to use as a link for this breadcrumb
+   */
+  getBreadcrumbs(key: ChildHALResource & DSpaceObject, url: string): Observable<Breadcrumb[]> {
+    const label = this.dsoNameService.getName(key);
+    const crumb = new Breadcrumb(label, url);
+
+    return this.getOwningItem(key.uuid).pipe(
+      switchMap((parentRD: RemoteData<ChildHALResource & DSpaceObject>) => {
+        if (isNotEmpty(parentRD) && hasValue(parentRD.payload)) {
+          const parent = parentRD.payload;
+          return super.getBreadcrumbs(parent, getDSORoute(parent));
+        }
+        return observableOf([]);
+
+      }),
+      map((breadcrumbs: Breadcrumb[]) => [...breadcrumbs, crumb])
+    );
+  }
+
+  getOwningItem(uuid: string): Observable<RemoteData<Item>> {
+    return this.bitstreamService.findById(uuid, true, true, ...BITSTREAM_PAGE_LINKS_TO_FOLLOW).pipe(
+      getFirstCompletedRemoteData(),
+      getRemoteDataPayload(),
+      switchMap((bitstream: Bitstream) => {
+        if (hasValue(bitstream)) {
+          return bitstream.bundle.pipe(
+            getFirstCompletedRemoteData(),
+            getRemoteDataPayload(),
+            switchMap((bundle: Bundle) => {
+              if (hasValue(bundle)) {
+                return bundle.item.pipe(
+                  getFirstCompletedRemoteData(),
+                );
+              } else {
+                return observableOf(undefined);
+              }
+            })
+          );
+        } else {
+          return observableOf(undefined);
+        }
+      })
+    );
+  }
+}

src/app/core/breadcrumbs/dso-breadcrumbs.service.ts

@@ -20,8 +20,8 @@ import { getDSORoute } from '../../app-routing-paths';
 })
 export class DSOBreadcrumbsService implements BreadcrumbsProviderService<ChildHALResource & DSpaceObject> {
   constructor(
-    private linkService: LinkService,
-    private dsoNameService: DSONameService
+    protected linkService: LinkService,
+    protected dsoNameService: DSONameService
   ) {
 
   }

src/app/core/shared/bitstream.model.ts

@@ -7,13 +7,13 @@ import { BITSTREAM_FORMAT } from './bitstream-format.resource-type';
 import { BITSTREAM } from './bitstream.resource-type';
 import { DSpaceObject } from './dspace-object.model';
 import { HALLink } from './hal-link.model';
-import { HALResource } from './hal-resource.model';
 import {BUNDLE} from './bundle.resource-type';
 import {Bundle} from './bundle.model';
+import { ChildHALResource } from './child-hal-resource.model';
 
 @typedObject
 @inheritSerialization(DSpaceObject)
-export class Bitstream extends DSpaceObject implements HALResource {
+export class Bitstream extends DSpaceObject implements ChildHALResource {
   static type = BITSTREAM;
 
   /**
@@ -66,4 +66,8 @@ export class Bitstream extends DSpaceObject implements HALResource {
    */
   @link(BUNDLE)
   bundle?: Observable<RemoteData<Bundle>>;
+
+  getParentLinkKey(): keyof this['_links'] {
+    return 'format';
+  }
 }

src/app/shared/resource-policies/resource-policies.component.html

@@ -1,4 +1,4 @@
-<div *ngIf="(getResourcePolicies() | async)?.length > 0" class="table-responsive">
+<div class="table-responsive">
   <table class="table table-striped table-bordered table-hover">
     <thead>
       <tr>
@@ -29,7 +29,7 @@
           </div>
         </th>
       </tr>
-      <tr class="text-center">
+      <tr *ngIf="(getResourcePolicies() | async)?.length > 0" class="text-center">
         <th>
           <div class="custom-control custom-checkbox">
             <input type="checkbox"
@@ -50,7 +50,7 @@
         <th>{{'resource-policies.table.headers.edit' | translate}}</th>
       </tr>
     </thead>
-    <tbody>
+    <tbody *ngIf="(getResourcePolicies() | async)?.length > 0">
       <tr *ngFor="let entry of (getResourcePolicies() | async); trackById">
         <td class="text-center">
           <div class="custom-control custom-checkbox">