Add support for dynamic themes

README.md

@@ -339,7 +339,6 @@ dspace-angular
 ├── tslint.json                                         * TSLint (https://palantir.github.io/tslint/) configuration
 ├── typedoc.json                                        * TYPEDOC configuration
 ├── webpack                                             * Webpack (https://webpack.github.io/) config directory
-│   ├── helpers.js                                      *
 │   ├── webpack.aot.js                                  * Webpack (https://webpack.github.io/) config for AoT build
 │   ├── webpack.client.js                               * Webpack (https://webpack.github.io/) config for client build
 │   ├── webpack.common.js                               *

angular.json

@@ -17,6 +17,7 @@
         "build": {
           "builder": "@angular-builders/custom-webpack:browser",
           "options": {
+            "extractCss": true,
             "preserveSymlinks": true,
             "customWebpackConfig": {
               "path": "./webpack/webpack.browser.ts",
@@ -46,7 +47,16 @@
               "src/robots.txt"
             ],
             "styles": [
-              "src/styles.scss"
+              {
+                "input": "src/styles/base-theme.scss",
+                "inject": false,
+                "bundleName": "base-theme"
+              },
+              {
+                "input": "src/themes/custom/styles/theme.scss",
+                "inject": false,
+                "bundleName": "custom-theme"
+              }
             ],
             "scripts": []
           },
@@ -116,7 +126,11 @@
               "src/assets"
             ],
             "styles": [
-              "src/styles.scss"
+              {
+                "input": "src/styles/base-theme.scss",
+                "inject": false,
+                "bundleName": "base-theme"
+              }
             ],
             "scripts": []
           }

package.json

@@ -20,7 +20,9 @@
     "serve": "ts-node --project ./tsconfig.ts-node.json scripts/serve.ts",
     "start:dev": "npm-run-all --parallel config:dev:watch serve",
     "start:prod": "yarn run build:prod && yarn run serve:ssr",
+    "analyze": "webpack-bundle-analyzer dist/browser/stats.json",
     "build": "ng build",
+    "build:stats": "ng build --stats-json",
     "build:prod": "yarn run build:ssr",
     "build:ssr": "yarn run build:client-and-server-bundles && yarn run compile:server",
     "build:client-and-server-bundles": "ng build --prod && ng run dspace-angular:server:production --bundleDependencies true",
@@ -179,7 +181,7 @@
     "tslint": "^6.1.3",
     "typescript": "~4.0.5",
     "webpack": "^4.44.2",
-    "webpack-bundle-analyzer": "^3.3.2",
+    "webpack-bundle-analyzer": "^4.4.0",
     "webpack-cli": "^4.2.0",
     "webpack-node-externals": "1.7.2"
   }

postcss.config.js

@@ -1,7 +1,7 @@
 module.exports = {
   plugins: [
     require('postcss-import')(),
-    require('postcss-cssnext')(),
+    require('postcss-preset-env')(),
     require('postcss-apply')(),
     require('postcss-responsive-type')()
   ]

scripts/sync-build-dir.js

@@ -1,22 +0,0 @@
-const syncBuildDir = require('copyfiles');
-const path = require('path');
-const {
-  projectRoot,
-  theme,
-  themePath,
-} = require('../webpack/helpers');
-
-const projectDepth = projectRoot('./').split(path.sep).length;
-
-let callback;
-
-if (theme !== null && theme !== undefined) {
-  callback = () => {
-    syncBuildDir([path.join(themePath, '**/*'), 'build'], { up: projectDepth + 2 }, () => {})
-  }
-}
-else {
-  callback = () => {};
-}
-
-syncBuildDir([projectRoot('src/**/*'), 'build'], { up: projectDepth + 1 }, callback);

src/app/+admin/admin-search-page/admin-search-results/admin-search-result-grid-element/item-search-result/item-admin-search-result-grid-element.component.spec.ts

@@ -16,6 +16,8 @@ import { RouterTestingModule } from '@angular/router/testing';
 import { ItemSearchResult } from '../../../../../shared/object-collection/shared/item-search-result.model';
 import { ItemAdminSearchResultGridElementComponent } from './item-admin-search-result-grid-element.component';
 import { createSuccessfulRemoteDataObject$ } from '../../../../../shared/remote-data.utils';
+import { getMockThemeService } from '../../../../../shared/mocks/theme-service.mock';
+import { ThemeService } from '../../../../../shared/theme-support/theme.service';
 
 describe('ItemAdminSearchResultGridElementComponent', () => {
   let component: ItemAdminSearchResultGridElementComponent;
@@ -29,6 +31,8 @@ describe('ItemAdminSearchResultGridElementComponent', () => {
     }
   };
 
+  const mockThemeService = getMockThemeService();
+
   function init() {
     id = '780b2588-bda5-4112-a1cd-0b15000a5339';
     searchResult = new ItemSearchResult();
@@ -50,6 +54,7 @@ describe('ItemAdminSearchResultGridElementComponent', () => {
         providers: [
           { provide: TruncatableService, useValue: mockTruncatableService },
           { provide: BitstreamDataService, useValue: mockBitstreamDataService },
+          { provide: ThemeService, useValue: mockThemeService },
         ],
         schemas: [NO_ERRORS_SCHEMA]
       })

src/app/+admin/admin-search-page/admin-search-results/admin-search-result-grid-element/item-search-result/item-admin-search-result-grid-element.component.ts

@@ -12,6 +12,7 @@ import { TruncatableService } from '../../../../../shared/truncatable/truncatabl
 import { BitstreamDataService } from '../../../../../core/data/bitstream-data.service';
 import { GenericConstructor } from '../../../../../core/shared/generic-constructor';
 import { ListableObjectDirective } from '../../../../../shared/object-collection/shared/listable-object/listable-object.directive';
+import { ThemeService } from '../../../../../shared/theme-support/theme.service';
 
 @listableObjectComponent(ItemSearchResult, ViewMode.GridElement, Context.AdminSearch)
 @Component({
@@ -29,6 +30,7 @@ export class ItemAdminSearchResultGridElementComponent extends SearchResultGridE
 
   constructor(protected truncatableService: TruncatableService,
               protected bitstreamDataService: BitstreamDataService,
+              private themeService: ThemeService,
               private componentFactoryResolver: ComponentFactoryResolver
   ) {
     super(truncatableService, bitstreamDataService);
@@ -63,6 +65,6 @@ export class ItemAdminSearchResultGridElementComponent extends SearchResultGridE
    * @returns {GenericConstructor<Component>}
    */
   private getComponent(): GenericConstructor<Component> {
-    return getListableObjectComponent(this.object.getRenderTypes(), ViewMode.GridElement, undefined);
+    return getListableObjectComponent(this.object.getRenderTypes(), ViewMode.GridElement, undefined, this.themeService.getThemeName());
   }
 }

src/app/+admin/admin-sidebar/admin-sidebar.component.scss

@@ -1,12 +1,12 @@
-$icon-z-index: 10;
-
 :host {
+  --ds-icon-z-index: 10;
+
     left: 0;
     top: 0;
     height: 100vh;
     flex: 1 1 auto;
     nav {
-        background-color: $admin-sidebar-bg;
+        background-color: var(--ds-admin-sidebar-bg);
         height: 100%;
         flex-direction: column;
         > div {
@@ -19,12 +19,12 @@ $icon-z-index: 10;
         }
 
         &.inactive ::ng-deep .sidebar-collapsible {
-            margin-left: -#{$sidebar-items-width};
+            margin-left: calc(-1 * var(--ds-sidebar-items-width));
         }
 
         .navbar-nav {
             .admin-menu-header {
-                background-color: $admin-sidebar-header-bg;
+                background-color: var(--ds-admin-sidebar-header-bg);
                 .logo-wrapper {
                     img {
                         height: 20px;
@@ -43,29 +43,29 @@ $icon-z-index: 10;
                 .sidebar-section {
                     display: flex;
                     align-content: stretch;
-                    background-color: $admin-sidebar-bg;
+                    background-color: var(--ds-admin-sidebar-bg);
                     .nav-item {
-                        padding-top: $spacer;
-                        padding-bottom: $spacer;
+                        padding-top: var(--bs-spacer);
+                        padding-bottom: var(--bs-spacer);
                     }
                     .shortcut-icon {
-                        padding-left: $icon-padding;
-                        padding-right: $icon-padding;
+                        padding-left: var(--ds-icon-padding);
+                        padding-right: var(--ds-icon-padding);
                     }
                     .shortcut-icon, .icon-wrapper {
                         background-color: inherit;
-                        z-index: $icon-z-index;
+                        z-index: var(--ds-icon-z-index);
                     }
                     .sidebar-collapsible {
-                        width: $sidebar-items-width;
+                        width: var(--ds-sidebar-items-width);
                         position: relative;
                         a {
-                            padding-right: $spacer;
+                            padding-right: var(--bs-spacer);
                             width: 100%;
                         }
                     }
                     &.active > .sidebar-collapsible > .nav-link {
-                        color: $navbar-dark-active-color;
+                        color: var(--bs-navbar-dark-active-color);
                     }
                 }
             }

src/app/+admin/admin-sidebar/expandable-admin-sidebar-section/expandable-admin-sidebar-section.component.scss

@@ -1,13 +1,13 @@
 :host ::ng-deep {
     .fa-chevron-right {
-        padding-left: $spacer/2;
+        padding-left: calc(var(--bs-spacer) / 2);
         font-size: 0.5rem;
         line-height: 3;
     }
 
     .sidebar-sub-level-items {
         list-style: disc;
-        color: $navbar-dark-color;
+        color: var(--bs-navbar-dark-color);
         overflow: hidden;
 
     }

src/app/+admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.spec.ts

@@ -19,6 +19,8 @@ import { BitstreamDataService } from '../../../../../core/data/bitstream-data.se
 import { createSuccessfulRemoteDataObject$ } from '../../../../../shared/remote-data.utils';
 import { getMockLinkService } from '../../../../../shared/mocks/link-service.mock';
 import { of as observableOf } from 'rxjs';
+import { getMockThemeService } from '../../../../../shared/mocks/theme-service.mock';
+import { ThemeService } from '../../../../../shared/theme-support/theme.service';
 
 describe('WorkflowItemAdminWorkflowGridElementComponent', () => {
   let component: WorkflowItemSearchResultAdminWorkflowGridElementComponent;
@@ -28,6 +30,7 @@ describe('WorkflowItemAdminWorkflowGridElementComponent', () => {
   let itemRD$;
   let linkService;
   let object;
+  let themeService;
 
   function init() {
     itemRD$ = createSuccessfulRemoteDataObject$(new Item());
@@ -37,6 +40,7 @@ describe('WorkflowItemAdminWorkflowGridElementComponent', () => {
     wfi.item = itemRD$;
     object.indexableObject = wfi;
     linkService = getMockLinkService();
+    themeService = getMockThemeService();
   }
 
   beforeEach(waitForAsync(() => {
@@ -51,6 +55,7 @@ describe('WorkflowItemAdminWorkflowGridElementComponent', () => {
         ],
         providers: [
           { provide: LinkService, useValue: linkService },
+          { provide: ThemeService, useValue: themeService },
           {
             provide: TruncatableService, useValue: {
               isCollapsed: () => observableOf(true),

src/app/+admin/admin-workflow-page/admin-workflow-search-results/admin-workflow-search-result-grid-element/workflow-item/workflow-item-search-result-admin-workflow-grid-element.component.ts

@@ -1,7 +1,10 @@
 import { Component, ComponentFactoryResolver, ElementRef, ViewChild } from '@angular/core';
 import { Item } from '../../../../../core/shared/item.model';
 import { ViewMode } from '../../../../../core/shared/view-mode.model';
-import { getListableObjectComponent, listableObjectComponent } from '../../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
+import {
+  getListableObjectComponent,
+  listableObjectComponent
+} from '../../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
 import { Context } from '../../../../../core/shared/context.model';
 import { SearchResultGridElementComponent } from '../../../../../shared/object-grid/search-result-grid-element/search-result-grid-element.component';
 import { TruncatableService } from '../../../../../shared/truncatable/truncatable.service';
@@ -13,9 +16,13 @@ import { Observable } from 'rxjs';
 import { LinkService } from '../../../../../core/cache/builders/link.service';
 import { followLink } from '../../../../../shared/utils/follow-link-config.model';
 import { RemoteData } from '../../../../../core/data/remote-data';
-import { getAllSucceededRemoteData, getRemoteDataPayload } from '../../../../../core/shared/operators';
+import {
+  getAllSucceededRemoteData,
+  getRemoteDataPayload
+} from '../../../../../core/shared/operators';
 import { take } from 'rxjs/operators';
 import { WorkflowItemSearchResult } from '../../../../../shared/object-collection/shared/workflow-item-search-result.model';
+import { ThemeService } from '../../../../../shared/theme-support/theme.service';
 
 @listableObjectComponent(WorkflowItemSearchResult, ViewMode.GridElement, Context.AdminWorkflowSearch)
 @Component({
@@ -51,6 +58,7 @@ export class WorkflowItemSearchResultAdminWorkflowGridElementComponent extends S
     private componentFactoryResolver: ComponentFactoryResolver,
     private linkService: LinkService,
     protected truncatableService: TruncatableService,
+    private themeService: ThemeService,
     protected bitstreamDataService: BitstreamDataService
   ) {
     super(truncatableService, bitstreamDataService);
@@ -92,7 +100,7 @@ export class WorkflowItemSearchResultAdminWorkflowGridElementComponent extends S
    * @returns {GenericConstructor<Component>}
    */
   private getComponent(item: Item): GenericConstructor<Component> {
-    return getListableObjectComponent(item.getRenderTypes(), ViewMode.GridElement, undefined);
+    return getListableObjectComponent(item.getRenderTypes(), ViewMode.GridElement, undefined, this.themeService.getThemeName());
   }
 
 }

src/app/+bitstream-page/edit-bitstream-page/edit-bitstream-page.component.scss

@@ -2,7 +2,7 @@
   ::ng-deep {
     .switch {
       position: absolute;
-      top: $spacer*2.5;
+      top: calc(var(--bs-spacer) * 2.5);
     }
   }
 }

src/app/+collection-page/collection-page.resolver.spec.ts

@@ -6,17 +6,21 @@ describe('CollectionPageResolver', () => {
   describe('resolve', () => {
     let resolver: CollectionPageResolver;
     let collectionService: any;
+    let store: any;
     const uuid = '1234-65487-12354-1235';
 
     beforeEach(() => {
       collectionService = {
         findById: (id: string) => createSuccessfulRemoteDataObject$({ id })
       };
-      resolver = new CollectionPageResolver(collectionService);
+      store = jasmine.createSpyObj('store', {
+        dispatch: {},
+      });
+      resolver = new CollectionPageResolver(collectionService, store);
     });
 
     it('should resolve a collection with the correct id', (done) => {
-      resolver.resolve({ params: { id: uuid } } as any, undefined)
+      resolver.resolve({ params: { id: uuid } } as any, { url: 'current-url' } as any)
         .pipe(first())
         .subscribe(
           (resolved) => {

src/app/+collection-page/collection-page.resolver.ts

@@ -4,15 +4,31 @@ import { Collection } from '../core/shared/collection.model';
 import { Observable } from 'rxjs';
 import { CollectionDataService } from '../core/data/collection-data.service';
 import { RemoteData } from '../core/data/remote-data';
-import { followLink } from '../shared/utils/follow-link-config.model';
+import { followLink, FollowLinkConfig } from '../shared/utils/follow-link-config.model';
 import { getFirstCompletedRemoteData } from '../core/shared/operators';
+import { Store } from '@ngrx/store';
+import { ResolvedAction } from '../core/resolving/resolver.actions';
+
+/**
+ * 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 COLLECTION_PAGE_LINKS_TO_FOLLOW: FollowLinkConfig<Collection>[] = [
+  followLink('parentCommunity', undefined, true, true, true,
+    followLink('parentCommunity')
+  ),
+  followLink('logo')
+];
 
 /**
  * This class represents a resolver that requests a specific collection before the route is activated
  */
 @Injectable()
 export class CollectionPageResolver implements Resolve<RemoteData<Collection>> {
-  constructor(private collectionService: CollectionDataService) {
+  constructor(
+    private collectionService: CollectionDataService,
+    private store: Store<any>
+  ) {
   }
 
   /**
@@ -23,8 +39,19 @@ export class CollectionPageResolver implements Resolve<RemoteData<Collection>> {
    * or an error if something went wrong
    */
   resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<RemoteData<Collection>> {
-    return this.collectionService.findById(route.params.id, true, false, followLink('logo')).pipe(
+    const collectionRD$ = this.collectionService.findById(
+      route.params.id,
+      true,
+      false,
+      ...COLLECTION_PAGE_LINKS_TO_FOLLOW
+    ).pipe(
       getFirstCompletedRemoteData()
     );
+
+    collectionRD$.subscribe((collectionRD: RemoteData<Collection>) => {
+      this.store.dispatch(new ResolvedAction(state.url, collectionRD.payload));
+    });
+
+    return collectionRD$;
   }
 }

src/app/+community-page/community-page.resolver.spec.ts

@@ -6,17 +6,21 @@ describe('CommunityPageResolver', () => {
   describe('resolve', () => {
     let resolver: CommunityPageResolver;
     let communityService: any;
+    let store: any;
     const uuid = '1234-65487-12354-1235';
 
     beforeEach(() => {
       communityService = {
         findById: (id: string) => createSuccessfulRemoteDataObject$({ id })
       };
-      resolver = new CommunityPageResolver(communityService);
+      store = jasmine.createSpyObj('store', {
+        dispatch: {},
+      });
+      resolver = new CommunityPageResolver(communityService, store);
     });
 
     it('should resolve a community with the correct id', (done) => {
-      resolver.resolve({ params: { id: uuid } } as any, undefined)
+      resolver.resolve({ params: { id: uuid } } as any, { url: 'current-url' } as any)
         .pipe(first())
         .subscribe(
           (resolved) => {

src/app/+community-page/community-page.resolver.ts

@@ -4,15 +4,31 @@ import { Observable } from 'rxjs';
 import { RemoteData } from '../core/data/remote-data';
 import { Community } from '../core/shared/community.model';
 import { CommunityDataService } from '../core/data/community-data.service';
-import { followLink } from '../shared/utils/follow-link-config.model';
+import { followLink, FollowLinkConfig } from '../shared/utils/follow-link-config.model';
 import { getFirstCompletedRemoteData } from '../core/shared/operators';
+import { ResolvedAction } from '../core/resolving/resolver.actions';
+import { Store } from '@ngrx/store';
+
+/**
+ * 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 COMMUNITY_PAGE_LINKS_TO_FOLLOW: FollowLinkConfig<Community>[] = [
+  followLink('logo'),
+  followLink('subcommunities'),
+  followLink('collections'),
+  followLink('parentCommunity')
+];
 
 /**
  * This class represents a resolver that requests a specific community before the route is activated
  */
 @Injectable()
 export class CommunityPageResolver implements Resolve<RemoteData<Community>> {
-  constructor(private communityService: CommunityDataService) {
+  constructor(
+    private communityService: CommunityDataService,
+    private store: Store<any>
+  ) {
   }
 
   /**
@@ -23,15 +39,19 @@ export class CommunityPageResolver implements Resolve<RemoteData<Community>> {
    * or an error if something went wrong
    */
   resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<RemoteData<Community>> {
-    return this.communityService.findById(
+    const communityRD$ = this.communityService.findById(
       route.params.id,
       true,
       false,
-      followLink('logo'),
-      followLink('subcommunities'),
-      followLink('collections')
+      ...COMMUNITY_PAGE_LINKS_TO_FOLLOW
     ).pipe(
       getFirstCompletedRemoteData(),
     );
+
+    communityRD$.subscribe((communityRD: RemoteData<Community>) => {
+      this.store.dispatch(new ResolvedAction(state.url, communityRD.payload));
+    });
+
+    return communityRD$;
   }
 }

src/app/+community-page/sub-collection-list/community-page-sub-collection-list.component.spec.ts

@@ -18,11 +18,14 @@ import { PageInfo } from '../../core/shared/page-info.model';
 import { HostWindowService } from '../../shared/host-window.service';
 import { HostWindowServiceStub } from '../../shared/testing/host-window-service.stub';
 import { SelectableListService } from '../../shared/object-list/selectable-list/selectable-list.service';
+import { getMockThemeService } from '../../shared/mocks/theme-service.mock';
+import { ThemeService } from '../../shared/theme-support/theme.service';
 
 describe('CommunityPageSubCollectionList Component', () => {
   let comp: CommunityPageSubCollectionListComponent;
   let fixture: ComponentFixture<CommunityPageSubCollectionListComponent>;
   let collectionDataServiceStub: any;
+  let themeService;
   let subCollList = [];
 
   const collections = [Object.assign(new Community(), {
@@ -110,6 +113,8 @@ describe('CommunityPageSubCollectionList Component', () => {
     }
   };
 
+  themeService = getMockThemeService();
+
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
       imports: [
@@ -124,6 +129,7 @@ describe('CommunityPageSubCollectionList Component', () => {
         { provide: CollectionDataService, useValue: collectionDataServiceStub },
         { provide: HostWindowService, useValue: new HostWindowServiceStub(0) },
         { provide: SelectableListService, useValue: {} },
+        { provide: ThemeService, useValue: themeService },
       ],
       schemas: [NO_ERRORS_SCHEMA]
     }).compileComponents();

src/app/+community-page/sub-community-list/community-page-sub-community-list.component.spec.ts

@@ -18,11 +18,14 @@ import { HostWindowService } from '../../shared/host-window.service';
 import { HostWindowServiceStub } from '../../shared/testing/host-window-service.stub';
 import { CommunityDataService } from '../../core/data/community-data.service';
 import { SelectableListService } from '../../shared/object-list/selectable-list/selectable-list.service';
+import { getMockThemeService } from '../../shared/mocks/theme-service.mock';
+import { ThemeService } from '../../shared/theme-support/theme.service';
 
 describe('CommunityPageSubCommunityListComponent Component', () => {
   let comp: CommunityPageSubCommunityListComponent;
   let fixture: ComponentFixture<CommunityPageSubCommunityListComponent>;
   let communityDataServiceStub: any;
+  let themeService;
   let subCommList = [];
 
   const subcommunities = [Object.assign(new Community(), {
@@ -111,6 +114,8 @@ describe('CommunityPageSubCommunityListComponent Component', () => {
     }
   };
 
+  themeService = getMockThemeService();
+
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
       imports: [
@@ -125,6 +130,7 @@ describe('CommunityPageSubCommunityListComponent Component', () => {
         { provide: CommunityDataService, useValue: communityDataServiceStub },
         { provide: HostWindowService, useValue: new HostWindowServiceStub(0) },
         { provide: SelectableListService, useValue: {} },
+        { provide: ThemeService, useValue: themeService },
       ],
       schemas: [NO_ERRORS_SCHEMA]
     }).compileComponents();

src/app/+home-page/home-news/home-news.component.scss

@@ -1,7 +1,7 @@
 :host {
     display: block;
-    margin-top: -$content-spacing;
-    margin-bottom: -$content-spacing;
+    margin-top: calc(-1 * var(--ds-content-spacing));
+    margin-bottom: calc(-1 * var(--ds-content-spacing));
 }
 
 .display-3 {

src/app/+home-page/home-news/home-news.component.ts

@@ -1,4 +1,4 @@
-import { Component } from '@angular/core';
+import { Component, } from '@angular/core';
 
 @Component({
   selector: 'ds-home-news',
@@ -10,5 +10,4 @@ import { Component } from '@angular/core';
  * Component to render the news section on the home page
  */
 export class HomeNewsComponent {
-
 }

src/app/+home-page/home-news/themed-home-news.component.ts

@@ -0,0 +1,27 @@
+import { Component } from '@angular/core';
+import { ThemedComponent } from '../../shared/theme-support/themed.component';
+import { HomeNewsComponent } from './home-news.component';
+
+@Component({
+  selector: 'ds-themed-home-news',
+  styleUrls: [],
+  templateUrl: '../../shared/theme-support/themed.component.html',
+})
+
+/**
+ * Component to render the news section on the home page
+ */
+export class ThemedHomeNewsComponent extends ThemedComponent<HomeNewsComponent> {
+  protected getComponentName(): string {
+    return 'HomeNewsComponent';
+  }
+
+  protected importThemedComponent(themeName: string): Promise<any> {
+    return import(`../../../themes/${themeName}/app/+home-page/home-news/home-news.component`);
+  }
+
+  protected importUnthemedComponent(): Promise<any> {
+    return import(`./home-news.component`);
+  }
+
+}

src/app/+home-page/home-page-routing.module.ts

@@ -1,17 +1,17 @@
 import { NgModule } from '@angular/core';
 import { RouterModule } from '@angular/router';
 
-import { HomePageComponent } from './home-page.component';
 import { HomePageResolver } from './home-page.resolver';
 import { MenuItemType } from '../shared/menu/initial-menus-state';
 import { LinkMenuItemModel } from '../shared/menu/menu-item/models/link.model';
+import { ThemedHomePageComponent } from './themed-home-page.component';
 
 @NgModule({
   imports: [
     RouterModule.forChild([
       {
         path: '',
-        component: HomePageComponent,
+        component: ThemedHomePageComponent,
         pathMatch: 'full',
         data: {
           title: 'home.title',

src/app/+home-page/home-page.component.html

@@ -1,4 +1,4 @@
-<ds-home-news></ds-home-news>
+<ds-themed-home-news></ds-themed-home-news>
 <div class="container">
   <ng-container *ngIf="(site$ | async) as site">
     <ds-view-tracker [object]="site"></ds-view-tracker>

src/app/+home-page/home-page.component.ts

@@ -10,7 +10,7 @@ import { Site } from '../core/shared/site.model';
   templateUrl: './home-page.component.html'
 })
 export class HomePageComponent implements OnInit {
-
+  testInput = 'Bingo!';
   site$: Observable<Site>;
 
   constructor(
@@ -23,4 +23,8 @@ export class HomePageComponent implements OnInit {
       map((data) => data.site as Site),
     );
   }
+
+  onOutput(event: string) {
+    console.log('testOutput:', event);
+  }
 }

src/app/+home-page/home-page.module.ts

@@ -7,6 +7,16 @@ import { HomePageRoutingModule } from './home-page-routing.module';
 import { HomePageComponent } from './home-page.component';
 import { TopLevelCommunityListComponent } from './top-level-community-list/top-level-community-list.component';
 import { StatisticsModule } from '../statistics/statistics.module';
+import { ThemedHomeNewsComponent } from './home-news/themed-home-news.component';
+import { ThemedHomePageComponent } from './themed-home-page.component';
+
+const DECLARATIONS = [
+  HomePageComponent,
+  ThemedHomePageComponent,
+  TopLevelCommunityListComponent,
+  ThemedHomeNewsComponent,
+  HomeNewsComponent,
+];
 
 @NgModule({
   imports: [
@@ -16,10 +26,11 @@ import { StatisticsModule } from '../statistics/statistics.module';
     StatisticsModule.forRoot()
   ],
   declarations: [
-    HomePageComponent,
-    TopLevelCommunityListComponent,
-    HomeNewsComponent,
-  ]
+    ...DECLARATIONS,
+  ],
+  exports: [
+    ...DECLARATIONS,
+  ],
 })
 export class HomePageModule {
 

src/app/+home-page/themed-home-page.component.ts

@@ -0,0 +1,26 @@
+import { ThemedComponent } from '../shared/theme-support/themed.component';
+import { HomePageComponent } from './home-page.component';
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'ds-themed-home-page',
+  styleUrls: [],
+  templateUrl: '../shared/theme-support/themed.component.html',
+})
+export class ThemedHomePageComponent extends ThemedComponent<HomePageComponent> {
+  protected inAndOutputNames: (keyof HomePageComponent & keyof this)[];
+
+
+  protected getComponentName(): string {
+    return 'HomePageComponent';
+  }
+
+  protected importThemedComponent(themeName: string): Promise<any> {
+    return import(`../../themes/${themeName}/app/+home-page/home-page.component`);
+  }
+
+  protected importUnthemedComponent(): Promise<any> {
+    return import(`./home-page.component`);
+  }
+
+}

src/app/+home-page/top-level-community-list/top-level-community-list.component.spec.ts

@@ -18,11 +18,14 @@ import { HostWindowService } from '../../shared/host-window.service';
 import { HostWindowServiceStub } from '../../shared/testing/host-window-service.stub';
 import { CommunityDataService } from '../../core/data/community-data.service';
 import { SelectableListService } from '../../shared/object-list/selectable-list/selectable-list.service';
+import { getMockThemeService } from '../../shared/mocks/theme-service.mock';
+import { ThemeService } from '../../shared/theme-support/theme.service';
 
 describe('TopLevelCommunityList Component', () => {
   let comp: TopLevelCommunityListComponent;
   let fixture: ComponentFixture<TopLevelCommunityListComponent>;
   let communityDataServiceStub: any;
+  let themeService;
 
   const topCommList = [Object.assign(new Community(), {
     id: '123456789-1',
@@ -101,6 +104,8 @@ describe('TopLevelCommunityList Component', () => {
     }
   };
 
+  themeService = getMockThemeService();
+
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
       imports: [
@@ -115,6 +120,7 @@ describe('TopLevelCommunityList Component', () => {
         { provide: CommunityDataService, useValue: communityDataServiceStub },
         { provide: HostWindowService, useValue: new HostWindowServiceStub(0) },
         { provide: SelectableListService, useValue: {} },
+        { provide: ThemeService, useValue: themeService },
       ],
       schemas: [NO_ERRORS_SCHEMA]
     }).compileComponents();

src/app/+item-page/edit-item-page/edit-item-page.component.scss

@@ -1,3 +1,3 @@
 .btn {
-    min-width: $edit-item-button-min-width;
+    min-width: var(--ds-edit-item-button-min-width);
 }

src/app/+item-page/edit-item-page/item-bitstreams/item-bitstreams.component.scss

@@ -1,19 +1,19 @@
 .header-row {
-  color: $table-dark-color;
-  background-color: $table-dark-bg;
-  border-color: $table-dark-border-color;
+  color: var(--bs-table-dark-color);
+  background-color: var(--bs-table-dark-bg);
+  border-color: var(--bs-table-dark-border-color);
 }
 
 .bundle-row {
-  color: $table-head-color;
-  background-color: $table-head-bg;
-  border-color: $table-border-color;
+  color: var(--bs-table-head-color);
+  background-color: var(--bs-table-head-bg);
+  border-color: var(--bs-table-border-color);
 }
 
 .row-element {
   padding: 12px;
   padding: 0.75em;
-  border-bottom: $table-border-width solid $table-border-color;
+  border-bottom: var(--bs-table-border-width) solid var(--bs-table-border-color);
 }
 
 .drag-handle {

src/app/+item-page/edit-item-page/item-metadata/edit-in-place-field/edit-in-place-field.component.scss

@@ -1,13 +1,13 @@
 .btn[disabled] {
-    color: $gray-600;
-    border-color: $gray-600;
+    color: var(--bs-gray-600);
+    border-color: var(--bs-gray-600);
     z-index: 0; // prevent border colors jumping on hover
 }
 
 .metadata-field {
-    width: $edit-item-metadata-field-width;
+    width: var(--ds-edit-item-metadata-field-width);
 }
 
 .language-field {
-    width: $edit-item-language-field-width;
+    width: var(--ds-edit-item-language-field-width);
 }

src/app/+item-page/edit-item-page/item-metadata/item-metadata.component.scss

@@ -1,19 +1,19 @@
 .button-row {
     .btn {
-        margin-right: 0.5 * $spacer;
+        margin-right: calc(0.5 * var(--bs-spacer));
 
         &:last-child {
             margin-right: 0;
         }
 
-        @media screen and (min-width: map-get($grid-breakpoints, sm)) {
-            min-width: $edit-item-button-min-width;
+        @media screen and (min-width: var(--ds-grid-breakpoints-sm)) {
+            min-width: var(--ds-edit-item-button-min-width);
         }
     }
 
     &.top .btn {
-        margin-top: $spacer/2;
-        margin-bottom: $spacer/2;
+        margin-top: calc(var(--bs-spacer) / 2);
+        margin-bottom: calc(var(--bs-spacer) / 2);
     }
 
 

src/app/+item-page/edit-item-page/item-relationships/edit-relationship-list/edit-relationship-list.component.scss

@@ -1,10 +1,10 @@
 .relationship-row:not(.alert) {
-  padding: $alert-padding-y 0;
+  padding: var(--bs-alert-padding-y) 0;
 }
 
 .relationship-row.alert {
-  margin-left: -$alert-padding-x;
-  margin-right: -$alert-padding-x;
+  margin-left: calc(-1 * var(--bs-alert-padding-x));
+  margin-right: calc(-1 * var(--bs-alert-padding-x));
   margin-top: -1px;
   margin-bottom: -1px;
 }

src/app/+item-page/edit-item-page/item-relationships/edit-relationship/edit-relationship.component.scss

@@ -1,6 +1,6 @@
 .btn[disabled] {
-  color: $gray-600;
-  border-color: $gray-600;
+  color: var(--bs-gray-600);
+  border-color: var(--bs-gray-600);
   z-index: 0; // prevent border colors jumping on hover
 }
 

src/app/+item-page/edit-item-page/item-relationships/item-relationships.component.scss

@@ -1,19 +1,19 @@
 .button-row {
   .btn {
-    margin-right: 0.5 * $spacer;
+    margin-right: calc(0.5 * var(--bs-spacer));
 
     &:last-child {
       margin-right: 0;
     }
 
-    @media screen and (min-width: map-get($grid-breakpoints, sm)) {
-      min-width: $edit-item-button-min-width;
+    @media screen and (min-width: var(--ds-grid-breakpoints-sm)) {
+      min-width: var(--ds-edit-item-button-min-width);
     }
   }
 
   &.top .btn {
-    margin-top: $spacer/2;
-    margin-bottom: $spacer/2;
+    margin-top: calc(var(--bs-spacer) / 2);
+    margin-bottom: calc(var(--bs-spacer) / 2);
   }
 
 

src/app/+item-page/full/field-components/file-section/full-file-section.component.scss

@@ -1,4 +1,4 @@
-@media screen and (min-width: map-get($grid-breakpoints, md)) {
+@media screen and (min-width: var(--ds-grid-breakpoints-md)) {
     dt {
         text-align: right;
     }

src/app/+item-page/item-page.module.ts

@@ -32,17 +32,7 @@ const ENTRY_COMPONENTS = [
   UntypedItemComponent
 ];
 
-@NgModule({
-  imports: [
-    CommonModule,
-    SharedModule.withEntryComponents(),
-    ItemPageRoutingModule,
-    EditItemPageModule,
-    StatisticsModule.forRoot(),
-    JournalEntitiesModule.withEntryComponents(),
-    ResearchEntitiesModule.withEntryComponents()
-  ],
-  declarations: [
+const DECLARATIONS = [
   ItemPageComponent,
   FullItemPageComponent,
   MetadataUriValuesComponent,
@@ -60,6 +50,23 @@ const ENTRY_COMPONENTS = [
   ItemComponent,
   UploadBitstreamComponent,
   AbstractIncrementalListComponent,
+];
+
+@NgModule({
+  imports: [
+    CommonModule,
+    SharedModule.withEntryComponents(),
+    ItemPageRoutingModule,
+    EditItemPageModule,
+    StatisticsModule.forRoot(),
+    JournalEntitiesModule.withEntryComponents(),
+    ResearchEntitiesModule.withEntryComponents()
+  ],
+  declarations: [
+    ...DECLARATIONS
+  ],
+  exports: [
+    ...DECLARATIONS
   ]
 })
 export class ItemPageModule {

src/app/+item-page/item-page.resolver.ts

@@ -7,9 +7,18 @@ import { Item } from '../core/shared/item.model';
 import { followLink, FollowLinkConfig } from '../shared/utils/follow-link-config.model';
 import { FindListOptions } from '../core/data/request.models';
 import { getFirstCompletedRemoteData } from '../core/shared/operators';
+import { Store } from '@ngrx/store';
+import { ResolvedAction } from '../core/resolving/resolver.actions';
 
+/**
+ * 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 ITEM_PAGE_LINKS_TO_FOLLOW: FollowLinkConfig<Item>[] = [
-  followLink('owningCollection'),
+  followLink('owningCollection', undefined, true, true, true,
+    followLink('parentCommunity', undefined, true, true, true,
+      followLink('parentCommunity'))
+  ),
   followLink('bundles', new FindListOptions(), true, true, true, followLink('bitstreams')),
   followLink('relationships'),
   followLink('version', undefined, true, true, true, followLink('versionhistory')),
@@ -20,7 +29,10 @@ export const ITEM_PAGE_LINKS_TO_FOLLOW: FollowLinkConfig<Item>[] = [
  */
 @Injectable()
 export class ItemPageResolver implements Resolve<RemoteData<Item>> {
-  constructor(private itemService: ItemDataService) {
+  constructor(
+    private itemService: ItemDataService,
+    private store: Store<any>
+  ) {
   }
 
   /**
@@ -31,12 +43,18 @@ export class ItemPageResolver implements Resolve<RemoteData<Item>> {
    * or an error if something went wrong
    */
   resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<RemoteData<Item>> {
-    return this.itemService.findById(route.params.id,
+    const itemRD$ = this.itemService.findById(route.params.id,
       true,
       false,
       ...ITEM_PAGE_LINKS_TO_FOLLOW
     ).pipe(
       getFirstCompletedRemoteData(),
     );
+
+    itemRD$.subscribe((itemRD: RemoteData<Item>) => {
+      this.store.dispatch(new ResolvedAction(state.url, itemRD.payload));
+    });
+
+    return itemRD$;
   }
 }

src/app/+login-page/login-page.component.scss

@@ -1,4 +1,4 @@
 .login-logo {
-  height: $login-logo-height;
-  width: $login-logo-width;
+  height: var(--ds-login-logo-height);
+  width: var(--ds-login-logo-width);
 }

src/app/+search-page/search.component.scss

@@ -6,5 +6,5 @@
 }
 
 ::ng-deep .search-controls {
-    margin-bottom: $spacer;
+    margin-bottom: var(--bs-spacer);
 }

src/app/app-routing-paths.ts

@@ -5,6 +5,7 @@ import { Item } from './core/shared/item.model';
 import { getCommunityPageRoute } from './+community-page/community-page-routing-paths';
 import { getCollectionPageRoute } from './+collection-page/collection-page-routing-paths';
 import { getItemPageRoute } from './+item-page/item-page-routing-paths';
+import { hasValue } from './shared/empty.util';
 
 export const BITSTREAM_MODULE_PATH = 'bitstreams';
 
@@ -45,6 +46,7 @@ export function getWorkflowItemModuleRoute() {
 }
 
 export function getDSORoute(dso: DSpaceObject): string {
+  if (hasValue(dso)) {
     switch ((dso as any).type) {
       case Community.type.value:
         return getCommunityPageRoute(dso.uuid);
@@ -54,6 +56,7 @@ export function getDSORoute(dso: DSpaceObject): string {
         return getItemPageRoute(dso.uuid);
     }
   }
+}
 
 export const FORBIDDEN_PATH = '403';
 

src/app/app.component.html

@@ -1,30 +1 @@
-<div class="outer-wrapper" *ngIf="isNotAuthBlocking$ | async; else authLoader">
-    <ds-admin-sidebar></ds-admin-sidebar>
-    <div class="inner-wrapper"  [@slideSidebarPadding]="{
-     value: (!(sidebarVisible | async) ? 'hidden' : (slideSidebarOver | async) ? 'shown' : 'expanded'),
-     params: {collapsedSidebarWidth: (collapsedSidebarWidth | async), totalSidebarWidth: (totalSidebarWidth | async)}
-    }">
-        <ds-header-navbar-wrapper></ds-header-navbar-wrapper>
-
-        <ds-notifications-board
-                [options]="notificationOptions">
-        </ds-notifications-board>
-        <main class="main-content">
-            <div class="container">
-                <ds-breadcrumbs></ds-breadcrumbs>
-            </div>
-
-            <div class="container" *ngIf="isLoading$ | async">
-                <ds-loading message="{{'loading.default' | translate}}"></ds-loading>
-            </div>
-            <router-outlet></router-outlet>
-        </main>
-
-        <ds-footer></ds-footer>
-    </div>
-</div>
-<ng-template #authLoader>
-  <div class="text-center ds-full-screen-loader d-flex align-items-center flex-column justify-content-center">
-    <ds-loading [showMessage]="false"></ds-loading>
-  </div>
-</ng-template>
+<ds-themed-root [isNotAuthBlocking]="isNotAuthBlocking$ | async" [isLoading]="isLoading$ | async"></ds-themed-root>

src/app/app.component.scss

@@ -1,53 +0,0 @@
-@import '../styles/helpers/font_awesome_imports.scss';
-@import '../../node_modules/bootstrap/scss/bootstrap.scss';
-@import '../../node_modules/nouislider/distribute/nouislider.min';
-
-html {
-  position: relative;
-  min-height: 100%;
-}
-
-body {
-  overflow-x: hidden;
-}
-
-// Sticky Footer
-.outer-wrapper {
-  display: flex;
-  margin: 0;
-}
-
-.inner-wrapper {
-  flex: 1 1 auto;
-  flex-flow: column nowrap;
-  display: flex;
-  min-height: 100vh;
-  flex-direction: column;
-  width: 100%;
-  position: relative;
-}
-
-.main-content {
-  z-index: $main-z-index;
-  flex: 1 1 100%;
-  margin-top: $content-spacing;
-  margin-bottom: $content-spacing;
-}
-
-.alert.hide {
-  padding: 0;
-  margin: 0;
-}
-
-ds-header-navbar-wrapper {
-  z-index: $nav-z-index;
-}
-
-ds-admin-sidebar {
-  position: fixed;
-  z-index: $sidebar-z-index;
-}
-
-.ds-full-screen-loader {
-  height: 100vh;
-}

src/app/app.component.ts

@@ -5,12 +5,12 @@ import {
   Component,
   HostListener,
   Inject,
-  OnInit, Optional,
-  ViewEncapsulation
+  OnInit,
+  Optional,
 } from '@angular/core';
 import { NavigationCancel, NavigationEnd, NavigationStart, Router } from '@angular/router';
 
-import { BehaviorSubject, combineLatest as combineLatestObservable, Observable, of } from 'rxjs';
+import { BehaviorSubject, Observable, of } from 'rxjs';
 import { select, Store } from '@ngrx/store';
 import { TranslateService } from '@ngx-translate/core';
 import { Angulartics2GoogleAnalytics } from 'angulartics2/ga';
@@ -23,25 +23,25 @@ import { isAuthenticationBlocking } from './core/auth/selectors';
 import { AuthService } from './core/auth/auth.service';
 import { CSSVariableService } from './shared/sass-helper/sass-helper.service';
 import { MenuService } from './shared/menu/menu.service';
-import { MenuID } from './shared/menu/initial-menus-state';
-import { slideSidebarPadding } from './shared/animations/slide';
 import { HostWindowService } from './shared/host-window.service';
-import { Theme } from '../config/theme.inferface';
+import { ThemeConfig } from '../config/theme.model';
 import { Angulartics2DSpace } from './statistics/angulartics/dspace-provider';
 import { environment } from '../environments/environment';
 import { models } from './core/core.module';
 import { LocaleService } from './core/locale/locale.service';
-import { hasValue } from './shared/empty.util';
+import { hasValue, isNotEmpty } from './shared/empty.util';
 import { KlaroService } from './shared/cookies/klaro.service';
 import { GoogleAnalyticsService } from './statistics/google-analytics.service';
+import { DOCUMENT } from '@angular/common';
+import { ThemeService } from './shared/theme-support/theme.service';
+import { BASE_THEME_NAME } from './shared/theme-support/theme.constants';
+import { DEFAULT_THEME_CONFIG } from './shared/theme-support/theme.effects';
 
 @Component({
   selector: 'ds-app',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
-  encapsulation: ViewEncapsulation.None,
-  animations: [slideSidebarPadding]
 })
 export class AppComponent implements OnInit, AfterViewInit {
   isLoading$: BehaviorSubject<boolean> = new BehaviorSubject(true);
@@ -49,7 +49,7 @@ export class AppComponent implements OnInit, AfterViewInit {
   slideSidebarOver: Observable<boolean>;
   collapsedSidebarWidth: Observable<string>;
   totalSidebarWidth: Observable<string>;
-  theme: Observable<Theme> = of({} as any);
+  theme: Observable<ThemeConfig> = of({} as any);
   notificationOptions = environment.notifications;
   models;
 
@@ -60,6 +60,8 @@ export class AppComponent implements OnInit, AfterViewInit {
 
   constructor(
     @Inject(NativeWindowService) private _window: NativeWindowRef,
+      @Inject(DOCUMENT) private document: any,
+    private themeService: ThemeService,
     private translate: TranslateService,
     private store: Store<HostWindowState>,
     private metadata: MetadataService,
@@ -77,6 +79,17 @@ export class AppComponent implements OnInit, AfterViewInit {
 
     /* Use models object so all decorators are actually called */
     this.models = models;
+
+    this.themeService.getThemeName$().subscribe((themeName: string) => {
+      if (hasValue(themeName)) {
+        this.setThemeCss(themeName);
+      } else if (hasValue(DEFAULT_THEME_CONFIG)) {
+        this.setThemeCss(DEFAULT_THEME_CONFIG.name);
+      } else {
+        this.setThemeCss(BASE_THEME_NAME);
+      }
+    });
+
     // Load all the languages that are defined as active from the config file
     translate.addLangs(environment.languages.filter((LangConfig) => LangConfig.active === true).map((a) => a.code));
 
@@ -116,17 +129,6 @@ export class AppComponent implements OnInit, AfterViewInit {
     const color: string = environment.production ? 'red' : 'green';
     console.info(`Environment: %c${env}`, `color: ${color}; font-weight: bold;`);
     this.dispatchWindowSize(this._window.nativeWindow.innerWidth, this._window.nativeWindow.innerHeight);
-
-    this.sidebarVisible = this.menuService.isMenuVisible(MenuID.ADMIN);
-
-    this.collapsedSidebarWidth = this.cssService.getVariable('collapsedSidebarWidth');
-    this.totalSidebarWidth = this.cssService.getVariable('totalSidebarWidth');
-
-    const sidebarCollapsed = this.menuService.isMenuCollapsed(MenuID.ADMIN);
-    this.slideSidebarOver = combineLatestObservable(sidebarCollapsed, this.windowService.isXsOrSm())
-      .pipe(
-        map(([collapsed, mobile]) => collapsed || mobile)
-      );
   }
 
   private storeCSSVariables() {
@@ -177,4 +179,34 @@ export class AppComponent implements OnInit, AfterViewInit {
       this.cookiesService.initialize();
     }
   }
+
+  /**
+   * Update the theme css file in <head>
+   *
+   * @param themeName The name of the new theme
+   * @private
+   */
+  private setThemeCss(themeName: string): void {
+    const head = this.document.getElementsByTagName('head')[0];
+    // Array.from to ensure we end up with an array, not an HTMLCollection, which would be
+    // automatically updated if we add nodes later
+    const currentThemeLinks = Array.from(this.document.getElementsByClassName('theme-css'));
+    const link = this.document.createElement('link');
+    link.setAttribute('rel', 'stylesheet');
+    link.setAttribute('type', 'text/css');
+    link.setAttribute('class', 'theme-css');
+    link.setAttribute('href', `/${encodeURIComponent(themeName)}-theme.css`);
+    // wait for the new css to download before removing the old one to prevent a
+    // flash of unstyled content
+    link.onload = () => {
+      if (isNotEmpty(currentThemeLinks)) {
+        currentThemeLinks.forEach((currentThemeLink: any) => {
+          if (hasValue(currentThemeLink)) {
+            currentThemeLink.remove();
+          }
+        });
+      }
+    };
+    head.appendChild(link);
+  }
 }

src/app/app.effects.ts

@@ -3,11 +3,13 @@ import { NotificationsEffects } from './shared/notifications/notifications.effec
 import { NavbarEffects } from './navbar/navbar.effects';
 import { SidebarEffects } from './shared/sidebar/sidebar-effects.service';
 import { RelationshipEffects } from './shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/relationship.effects';
+import { ThemeEffects } from './shared/theme-support/theme.effects';
 
 export const appEffects = [
   StoreEffects,
   NavbarEffects,
   NotificationsEffects,
   SidebarEffects,
+  ThemeEffects,
   RelationshipEffects
 ];

src/app/app.module.ts

@@ -43,6 +43,9 @@ import { ForbiddenComponent } from './forbidden/forbidden.component';
 import { AuthInterceptor } from './core/auth/auth.interceptor';
 import { LocaleInterceptor } from './core/locale/locale.interceptor';
 import { XsrfInterceptor } from './core/xsrf/xsrf.interceptor';
+import { RootComponent } from './root/root.component';
+import { ThemedRootComponent } from './root/themed-root.component';
+import { ThemedEntryComponentModule } from '../themes/themed-entry-component.module';
 
 export function getBase() {
   return environment.ui.nameSpace;
@@ -65,6 +68,7 @@ const IMPORTS = [
   EffectsModule.forRoot(appEffects),
   StoreModule.forRoot(appReducers, storeModuleConfig),
   StoreRouterConnectingModule.forRoot(),
+  ThemedEntryComponentModule.withEntryComponents(),
 ];
 
 IMPORTS.push(
@@ -120,6 +124,8 @@ const PROVIDERS = [
 
 const DECLARATIONS = [
   AppComponent,
+  RootComponent,
+  ThemedRootComponent,
   HeaderComponent,
   HeaderNavbarWrapperComponent,
   AdminSidebarComponent,
@@ -135,7 +141,6 @@ const DECLARATIONS = [
 ];
 
 const EXPORTS = [
-  AppComponent
 ];
 
 @NgModule({
@@ -150,7 +155,8 @@ const EXPORTS = [
     ...DECLARATIONS,
   ],
   exports: [
-    ...EXPORTS
+    ...EXPORTS,
+    ...DECLARATIONS,
   ]
 })
 export class AppModule {

src/app/app.reducer.ts

@@ -12,7 +12,10 @@ import {
   metadataRegistryReducer,
   MetadataRegistryState
 } from './+admin/admin-registries/metadata-registry/metadata-registry.reducers';
-import { CommunityListReducer, CommunityListState } from './community-list-page/community-list.reducer';
+import {
+  CommunityListReducer,
+  CommunityListState
+} from './community-list-page/community-list.reducer';
 import { hasValue } from './shared/empty.util';
 import {
   NameVariantListsState,
@@ -20,19 +23,32 @@ import {
 } from './shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/name-variant.reducer';
 import { formReducer, FormState } from './shared/form/form.reducer';
 import { menusReducer, MenusState } from './shared/menu/menu.reducer';
-import { notificationsReducer, NotificationsState } from './shared/notifications/notifications.reducers';
+import {
+  notificationsReducer,
+  NotificationsState
+} from './shared/notifications/notifications.reducers';
 import {
   selectableListReducer,
   SelectableListsState
 } from './shared/object-list/selectable-list/selectable-list.reducer';
-import { ObjectSelectionListState, objectSelectionReducer } from './shared/object-select/object-select.reducer';
+import {
+  ObjectSelectionListState,
+  objectSelectionReducer
+} from './shared/object-select/object-select.reducer';
 import { cssVariablesReducer, CSSVariablesState } from './shared/sass-helper/sass-helper.reducer';
 
 import { hostWindowReducer, HostWindowState } from './shared/search/host-window.reducer';
-import { filterReducer, SearchFiltersState } from './shared/search/search-filters/search-filter/search-filter.reducer';
-import { sidebarFilterReducer, SidebarFiltersState } from './shared/sidebar/filter/sidebar-filter.reducer';
+import {
+  filterReducer,
+  SearchFiltersState
+} from './shared/search/search-filters/search-filter/search-filter.reducer';
+import {
+  sidebarFilterReducer,
+  SidebarFiltersState
+} from './shared/sidebar/filter/sidebar-filter.reducer';
 import { sidebarReducer, SidebarState } from './shared/sidebar/sidebar.reducer';
 import { truncatableReducer, TruncatablesState } from './shared/truncatable/truncatable.reducer';
+import { ThemeState, themeReducer } from './shared/theme-support/theme.reducer';
 
 export interface AppState {
   router: fromRouter.RouterReducerState;
@@ -45,6 +61,7 @@ export interface AppState {
   searchFilter: SearchFiltersState;
   truncatable: TruncatablesState;
   cssVariables: CSSVariablesState;
+  theme: ThemeState;
   menus: MenusState;
   objectSelection: ObjectSelectionListState;
   selectableLists: SelectableListsState;
@@ -65,6 +82,7 @@ export const appReducers: ActionReducerMap<AppState> = {
   searchFilter: filterReducer,
   truncatable: truncatableReducer,
   cssVariables: cssVariablesReducer,
+  theme: themeReducer,
   menus: menusReducer,
   objectSelection: objectSelectionReducer,
   selectableLists: selectableListReducer,

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

@@ -3,7 +3,8 @@ import { DSOBreadcrumbsService } from './dso-breadcrumbs.service';
 import { DSOBreadcrumbResolver } from './dso-breadcrumb.resolver';
 import { Collection } from '../shared/collection.model';
 import { CollectionDataService } from '../data/collection-data.service';
-import { followLink, FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { COLLECTION_PAGE_LINKS_TO_FOLLOW } from '../../+collection-page/collection-page.resolver';
 
 /**
  * The class that resolves the BreadcrumbConfig object for a Collection
@@ -22,10 +23,6 @@ export class CollectionBreadcrumbResolver extends DSOBreadcrumbResolver<Collecti
    * Requesting them as embeds will limit the number of requests
    */
   get followLinks(): FollowLinkConfig<Collection>[] {
-    return [
-      followLink('parentCommunity', undefined, true, true, true,
-        followLink('parentCommunity')
-      )
-    ];
+    return COLLECTION_PAGE_LINKS_TO_FOLLOW;
   }
 }

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

@@ -3,7 +3,8 @@ import { DSOBreadcrumbsService } from './dso-breadcrumbs.service';
 import { DSOBreadcrumbResolver } from './dso-breadcrumb.resolver';
 import { CommunityDataService } from '../data/community-data.service';
 import { Community } from '../shared/community.model';
-import { followLink, FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { COMMUNITY_PAGE_LINKS_TO_FOLLOW } from '../../+community-page/community-page.resolver';
 
 /**
  * The class that resolves the BreadcrumbConfig object for a Community
@@ -22,8 +23,6 @@ export class CommunityBreadcrumbResolver extends DSOBreadcrumbResolver<Community
    * Requesting them as embeds will limit the number of requests
    */
   get followLinks(): FollowLinkConfig<Community>[] {
-    return [
-      followLink('parentCommunity')
-    ];
+    return COMMUNITY_PAGE_LINKS_TO_FOLLOW;
   }
 }

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

@@ -28,7 +28,7 @@ export class DSOBreadcrumbsService implements BreadcrumbsService<ChildHALResourc
 
   /**
    * Method to recursively calculate the breadcrumbs
-   * This method returns the name and url of the key and all its parent DSO's recursively, top down
+   * 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
    */

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

@@ -20,7 +20,7 @@ export class DSONameService {
    *
    * With only two exceptions those solutions seem overkill for now.
    */
-  private factories = {
+  private readonly factories = {
     Person: (dso: DSpaceObject): string => {
       return `${dso.firstMetadataValue('person.familyName')}, ${dso.firstMetadataValue('person.givenName')}`;
     },

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

@@ -3,7 +3,8 @@ import { DSOBreadcrumbsService } from './dso-breadcrumbs.service';
 import { ItemDataService } from '../data/item-data.service';
 import { Item } from '../shared/item.model';
 import { DSOBreadcrumbResolver } from './dso-breadcrumb.resolver';
-import { followLink, FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { ITEM_PAGE_LINKS_TO_FOLLOW } from '../../+item-page/item-page.resolver';
 
 /**
  * The class that resolves the BreadcrumbConfig object for an Item
@@ -22,13 +23,6 @@ export class ItemBreadcrumbResolver extends DSOBreadcrumbResolver<Item> {
    * Requesting them as embeds will limit the number of requests
    */
   get followLinks(): FollowLinkConfig<Item>[] {
-    return [
-      followLink('owningCollection', undefined, true, true, true,
-        followLink('parentCommunity', undefined, true, true, true,
-          followLink('parentCommunity'))
-      ),
-      followLink('bundles'),
-      followLink('relationships')
-    ];
+    return ITEM_PAGE_LINKS_TO_FOLLOW;
   }
 }

src/app/core/cache/builders/link.service.ts

@@ -3,7 +3,15 @@ import { hasNoValue, hasValue, isNotEmpty } from '../../../shared/empty.util';
 import { FollowLinkConfig } from '../../../shared/utils/follow-link-config.model';
 import { GenericConstructor } from '../../shared/generic-constructor';
 import { HALResource } from '../../shared/hal-resource.model';
-import { getDataServiceFor, getLinkDefinition, getLinkDefinitions, LinkDefinition } from './build-decorators';
+import {
+  getDataServiceFor,
+  getLinkDefinition,
+  getLinkDefinitions,
+  LinkDefinition
+} from './build-decorators';
+import { RemoteData } from '../../data/remote-data';
+import { Observable } from 'rxjs/internal/Observable';
+import { EMPTY } from 'rxjs';
 
 /**
  * A Service to handle the resolving and removing
@@ -33,12 +41,14 @@ export class LinkService {
   }
 
   /**
-   * Resolve the given {@link FollowLinkConfig} for the given model
+   * Resolve the given {@link FollowLinkConfig} for the given model and return the result. This does
+   * not attach the link result to the property on the model. Useful when you're working with a
+   * readonly object
    *
    * @param model the {@link HALResource} to resolve the link for
    * @param linkToFollow the {@link FollowLinkConfig} to resolve
    */
-  public resolveLink<T extends HALResource>(model, linkToFollow: FollowLinkConfig<T>): T {
+  public resolveLinkWithoutAttaching<T extends HALResource, U extends HALResource>(model, linkToFollow: FollowLinkConfig<T>): Observable<RemoteData<U>> {
     const matchingLinkDef = getLinkDefinition(model.constructor, linkToFollow.name);
 
     if (hasNoValue(matchingLinkDef)) {
@@ -61,9 +71,9 @@ export class LinkService {
 
         try {
           if (matchingLinkDef.isList) {
-            model[linkToFollow.name] = service.findAllByHref(href, linkToFollow.findListOptions, linkToFollow.useCachedVersionIfAvailable, linkToFollow.reRequestOnStale, ...linkToFollow.linksToFollow);
+            return service.findAllByHref(href, linkToFollow.findListOptions, linkToFollow.useCachedVersionIfAvailable, linkToFollow.reRequestOnStale, ...linkToFollow.linksToFollow);
           } else {
-            model[linkToFollow.name] = service.findByHref(href, linkToFollow.useCachedVersionIfAvailable, linkToFollow.reRequestOnStale, ...linkToFollow.linksToFollow);
+            return service.findByHref(href, linkToFollow.useCachedVersionIfAvailable, linkToFollow.reRequestOnStale, ...linkToFollow.linksToFollow);
           }
         } catch (e) {
           console.error(`Something went wrong when using @dataService(${matchingLinkDef.resourceType.value}) ${hasValue(service) ? '' : '(undefined) '}to resolve link ${linkToFollow.name} at ${href}`);
@@ -71,6 +81,18 @@ export class LinkService {
         }
       }
     }
+    return EMPTY;
+  }
+
+  /**
+   * Resolve the given {@link FollowLinkConfig} for the given model and return the model with the
+   * link property attached.
+   *
+   * @param model the {@link HALResource} to resolve the link for
+   * @param linkToFollow the {@link FollowLinkConfig} to resolve
+   */
+  public resolveLink<T extends HALResource>(model, linkToFollow: FollowLinkConfig<T>): T {
+    model[linkToFollow.name] = this.resolveLinkWithoutAttaching(model, linkToFollow);
     return model;
   }
 

src/app/core/cache/server-sync-buffer.effects.spec.ts

@@ -13,9 +13,14 @@ import { RestRequestMethod } from '../data/rest-request-method';
 import { DSpaceObject } from '../shared/dspace-object.model';
 import { ApplyPatchObjectCacheAction } from './object-cache.actions';
 import { ObjectCacheService } from './object-cache.service';
-import { CommitSSBAction, EmptySSBAction, ServerSyncBufferActionTypes } from './server-sync-buffer.actions';
+import {
+  CommitSSBAction,
+  EmptySSBAction,
+  ServerSyncBufferActionTypes
+} from './server-sync-buffer.actions';
 import { ServerSyncBufferEffects } from './server-sync-buffer.effects';
 import { storeModuleConfig } from '../../app.reducer';
+import { NoOpAction } from '../../shared/ngrx/no-op.action';
 
 describe('ServerSyncBufferEffects', () => {
   let ssbEffects: ServerSyncBufferEffects;
@@ -143,7 +148,7 @@ describe('ServerSyncBufferEffects', () => {
             payload: { method: RestRequestMethod.PATCH }
           }
         });
-        const expected = cold('b', { b: { type: 'NO_ACTION' } });
+        const expected = cold('b', { b: new NoOpAction() });
 
         expect(ssbEffects.commitServerSyncBuffer).toBeObservable(expected);
       });

src/app/core/cache/server-sync-buffer.effects.ts

@@ -21,6 +21,7 @@ import { RestRequestMethod } from '../data/rest-request-method';
 import { environment } from '../../../environments/environment';
 import { ObjectCacheEntry } from './object-cache.reducer';
 import { Operation } from 'fast-json-patch';
+import { NoOpAction } from '../../shared/ngrx/no-op.action';
 
 @Injectable()
 export class ServerSyncBufferEffects {
@@ -80,7 +81,7 @@ export class ServerSyncBufferEffects {
               switchMap((array) => [...array, new EmptySSBAction(action.payload)])
             );
             } else {
-              return observableOf({ type: 'NO_ACTION' });
+              return observableOf(new NoOpAction());
             }
           })
         );

src/app/core/data/object-updates/object-updates.effects.spec.ts

@@ -11,10 +11,14 @@ import {
   RemoveFieldUpdateAction,
   RemoveObjectUpdatesAction
 } from './object-updates.actions';
-import { INotification, Notification } from '../../../shared/notifications/models/notification.model';
+import {
+  INotification,
+  Notification
+} from '../../../shared/notifications/models/notification.model';
 import { NotificationType } from '../../../shared/notifications/models/notification-type';
 import { filter } from 'rxjs/operators';
 import { hasValue } from '../../../shared/empty.util';
+import { NoOpAction } from '../../../shared/ngrx/no-op.action';
 
 describe('ObjectUpdatesEffects', () => {
   let updatesEffects: ObjectUpdatesEffects;
@@ -97,7 +101,7 @@ describe('ObjectUpdatesEffects', () => {
           actions = hot('a', { a: new DiscardObjectUpdatesAction(testURL, infoNotification) });
           actions = hot('b', { b: new ReinstateObjectUpdatesAction(testURL) });
           updatesEffects.removeAfterDiscardOrReinstateOnUndo$.subscribe((t) => {
-              expect(t).toEqual({ type: 'NO_ACTION' });
+              expect(t).toEqual(new NoOpAction());
             }
           );
         });

src/app/core/data/object-updates/object-updates.effects.ts

@@ -3,7 +3,8 @@ import { Actions, Effect, ofType } from '@ngrx/effects';
 import {
   DiscardObjectUpdatesAction,
   ObjectUpdatesAction,
-  ObjectUpdatesActionTypes, RemoveAllObjectUpdatesAction,
+  ObjectUpdatesActionTypes,
+  RemoveAllObjectUpdatesAction,
   RemoveObjectUpdatesAction
 } from './object-updates.actions';
 import { delay, filter, map, switchMap, take, tap } from 'rxjs/operators';
@@ -17,6 +18,7 @@ import {
   RemoveNotificationAction
 } from '../../../shared/notifications/notifications.actions';
 import { Action } from '@ngrx/store';
+import { NoOpAction } from '../../../shared/ngrx/no-op.action';
 
 /**
  * NGRX effects for ObjectUpdatesActions
@@ -111,7 +113,7 @@ export class ObjectUpdatesEffects {
               map((updateAction: ObjectUpdatesAction) => {
                 if (updateAction.type === ObjectUpdatesActionTypes.REINSTATE) {
                   // If someone reinstated, do nothing, just let the reinstating happen
-                  return { type: 'NO_ACTION' };
+                  return new NoOpAction();
                 }
                 // If someone performed another action, assume the user does not want to reinstate and remove all changes
                 return removeAction;

src/app/core/index/index.effects.spec.ts

@@ -8,6 +8,7 @@ import { Item } from '../shared/item.model';
 import { AddToIndexAction } from './index.actions';
 import { IndexName } from './index.reducer';
 import { provideMockStore } from '@ngrx/store/testing';
+import { NoOpAction } from '../../shared/ngrx/no-op.action';
 
 describe('ObjectUpdatesEffects', () => {
   let indexEffects: UUIDIndexEffects;
@@ -79,14 +80,14 @@ describe('ObjectUpdatesEffects', () => {
     it('should emit NO_ACTION when a AddToObjectCacheAction without an alternativeLink is dispatched', () => {
       action = new AddToObjectCacheAction(objectToCache, timeCompleted, msToLive, requestUUID, undefined);
       actions = hot('--a-', { a: action });
-      const expected = cold('--b-', { b: { type: 'NO_ACTION' } });
+      const expected = cold('--b-', { b: new NoOpAction() });
       expect(indexEffects.addAlternativeObjectLink$).toBeObservable(expected);
     });
 
     it('should emit NO_ACTION when a AddToObjectCacheAction with an alternativeLink that\'s the same as the objectToCache\'s selfLink is dispatched', () => {
       action = new AddToObjectCacheAction(objectToCache, timeCompleted, msToLive, requestUUID, objectToCache._links.self.href);
       actions = hot('--a-', { a: action });
-      const expected = cold('--b-', { b: { type: 'NO_ACTION' } });
+      const expected = cold('--b-', { b: new NoOpAction() });
       expect(indexEffects.addAlternativeObjectLink$).toBeObservable(expected);
     });
   });

src/app/core/index/index.effects.ts

@@ -19,6 +19,7 @@ import { RestRequestMethod } from '../data/rest-request-method';
 import { getUrlWithoutEmbedParams, uuidFromHrefSelector } from './index.selectors';
 import { Store, select } from '@ngrx/store';
 import { CoreState } from '../core.reducers';
+import { NoOpAction } from '../../shared/ngrx/no-op.action';
 
 @Injectable()
 export class UUIDIndexEffects {
@@ -53,7 +54,7 @@ export class UUIDIndexEffects {
             selfLink
           );
         } else {
-          return { type: 'NO_ACTION' };
+          return new NoOpAction();
         }
       })
     );

src/app/core/resolving/resolver.actions.ts

@@ -0,0 +1,27 @@
+import { type } from '../../shared/ngrx/type';
+import { Action } from '@ngrx/store';
+import { DSpaceObject } from '../shared/dspace-object.model';
+
+export const ResolverActionTypes = {
+  RESOLVED: type('dspace/resolver/RESOLVED')
+};
+
+/**
+ * An action that indicates a route object has been resolved.
+ *
+ * It isn't used in a reducer for now. Its purpose is to be able to be notified that an object
+ * has been resolved in an effect.
+ */
+export class ResolvedAction implements Action {
+  type = ResolverActionTypes.RESOLVED;
+  payload: {
+    url: string,
+    dso: DSpaceObject
+  };
+
+  constructor(url: string, dso: DSpaceObject) {
+    this.payload = { url, dso };
+  }
+}
+
+export type ResolverAction = ResolvedAction;

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

@@ -3,7 +3,7 @@
  */
 
 export enum Context {
-  Undefined = 'undefined',
+  Any = 'undefined',
   ItemPage = 'itemPage',
   Search = 'search',
   Workflow = 'workflow',

src/app/entity-groups/research-entities/submission/item-list-elements/org-unit/org-unit-search-result-list-submission-element.component.scss

@@ -1,5 +1,3 @@
-$submission-relationship-thumbnail-width: 80px;
-
 .person-thumbnail {
-    width: $submission-relationship-thumbnail-width;
+    width: var(--ds-submission-relationship-thumbnail-width);
 }

src/app/entity-groups/research-entities/submission/item-list-elements/person/person-search-result-list-submission-element.component.scss

@@ -1,5 +1,3 @@
-$submission-relationship-thumbnail-width: 80px;
-
 .person-thumbnail {
-    width: $submission-relationship-thumbnail-width;
+  width: var(--ds-submission-relationship-thumbnail-width);
 }

src/app/footer/footer.component.scss

@@ -1,40 +1,42 @@
-$footer-bg: $gray-100;
-$footer-border: 1px solid darken($footer-bg, 10%);
-$footer-padding: $spacer * 1.5;
-$footer-logo-height: 55px;
+:host {
+  --ds-footer-bg: var(--bs-gray-100);
+  --ds-footer-border: 1px solid var(--bs-gray-300);
+  --ds-footer-padding: calc(var(--bs-spacer) * 1.5);
+  --ds-footer-logo-height: 55px;
 
   .footer {
-    background-color: $footer-bg;
-    border-top: $footer-border;
+    background-color: var(--ds-footer-bg);
+    border-top: var(--ds-footer-border);
     text-align: center;
-    padding: $footer-padding;
-    padding-bottom: $spacer;
+    padding: var(--ds-footer-padding);
+    padding-bottom: var(--bs-spacer);
 
     p {
       margin: 0;
     }
 
     img {
-        height: $footer-logo-height;
+      height: var(--ds-footer-logo-height);
     }
 
     ul {
-        padding-top: $spacer * 0.5;
+      padding-top: calc(var(--bs-spacer) * 0.5);
 
       li {
         display: inline-flex;
         a {
-                padding: 0 $spacer/2;
+          padding: 0 calc(var(--bs-spacer) / 2);
           color: inherit
         }
 
         &:not(:last-child) {
           &:after {
             content: '';
-                    border-right: 1px map-get($theme-colors, secondary) solid;
+            border-right: 1px var(--bs-secondary) solid;
           }
 
         }
       }
     }
   }
+}

src/app/header-nav-wrapper/header-navbar-wrapper.component.scss

@@ -1,6 +1,6 @@
-@media screen and (max-width: map-get($grid-breakpoints, md)) {
+@media screen and (max-width: var(--ds-grid-breakpoints-md)) {
     :host.open {
-        background-color: $white;
+        background-color: var(--bs-white);
         top: 0;
         position: sticky;
     }

src/app/header/header.component.scss

@@ -1,7 +1,7 @@
 .navbar-brand img {
-    height: $header-logo-height;
-    @media screen and (max-width: map-get($grid-breakpoints, sm)) {
-        height: $header-logo-height-xs;
+    height: var(--ds-header-logo-height);
+    @media screen and (max-width: var(--ds-grid-breakpoints-sm)) {
+        height: var(--ds-header-logo-height-xs);
     }
 }
 .navbar-toggler .navbar-toggler-icon {
@@ -11,10 +11,10 @@
 
 .navbar ::ng-deep {
   a {
-    color: $header-icon-color;
+    color: var(--ds-header-icon-color);
 
     &:hover, &focus {
-      color: darken($header-icon-color, 15%);
+      color: var(--ds-header-icon-color-hover);
     }
   }
 }

src/app/navbar/expandable-navbar-section/expandable-navbar-section.component.scss

@@ -4,18 +4,18 @@
     border-top-left-radius: 0;
     border-top-right-radius: 0;
     ::ng-deep a.nav-link {
-        padding-right: $spacer;
-        padding-left: $spacer;
+        padding-right: var(--bs-spacer);
+        padding-left: var(--bs-spacer);
         white-space: nowrap;
     }
 }
 
 /** Mobile menu styling **/
-@media screen and (max-width: map-get($grid-breakpoints, md)) {
+@media screen and (max-width: var(--ds-grid-breakpoints-md)) {
     .dropdown-toggle {
         &:after {
             float: right;
-            margin-top: $spacer/2;
+            margin-top: calc(var(--bs-spacer) / 2);
         }
     }
     .dropdown-menu {

src/app/navbar/navbar.component.scss

@@ -1,13 +1,13 @@
 nav.navbar {
-    border-bottom: 1px $gray-400 solid;
+    border-bottom: 1px var(--bs-gray-400) solid;
     align-items: baseline;
 }
 
 /** Mobile menu styling **/
-@media screen and (max-width: map-get($grid-breakpoints, md)) {
+@media screen and (max-width: var(--ds-grid-breakpoints-md)) {
     .navbar {
         width: 100%;
-        background-color: $white;
+        background-color: var(--bs-white);
         position: absolute;
         overflow: hidden;
         height: 0;
@@ -17,18 +17,18 @@ nav.navbar {
     }
 }
 
-@media screen and (min-width: map-get($grid-breakpoints, md)) {
+@media screen and (min-width: var(--ds-grid-breakpoints-md)) {
     .reset-padding-md {
-        margin-left: -$spacer/2;
-        margin-right: -$spacer/2;
+        margin-left: -calc(var(--bs-spacer) / 2);
+        margin-right: -calc(var(--bs-spacer) / 2);
     }
 }
 
 /* TODO remove when https://github.com/twbs/bootstrap/issues/24726 is fixed */
 .navbar-expand-md.navbar-container {
-    @media screen and (max-width: map-get($grid-breakpoints, md)) {
+    @media screen and (max-width: var(--ds-grid-breakpoints-md)) {
         > .container {
-            padding: 0 $spacer;
+            padding: 0 var(--bs-spacer);
         }
         padding: 0;
     }

src/app/navbar/navbar.component.ts

@@ -85,5 +85,4 @@ export class NavbarComponent extends MenuComponent {
     })));
 
   }
-
 }

src/app/navbar/navbar.effects.ts

@@ -12,6 +12,7 @@ import {
 import { MenuID } from '../shared/menu/initial-menus-state';
 import { MenuService } from '../shared/menu/menu.service';
 import { MenuState } from '../shared/menu/menu.reducer';
+import { NoOpAction } from '../shared/ngrx/no-op.action';
 
 @Injectable()
 export class NavbarEffects {
@@ -51,7 +52,7 @@ export class NavbarEffects {
                 return new CollapseMenuAction(MenuID.PUBLIC);
               }
             }
-            return { type: 'NO_ACTION' };
+            return new NoOpAction();
           }));
       })
     );

src/app/navbar/navbar.module.ts

@@ -9,6 +9,7 @@ import { NavbarSectionComponent } from './navbar-section/navbar-section.componen
 import { ExpandableNavbarSectionComponent } from './expandable-navbar-section/expandable-navbar-section.component';
 import { NavbarComponent } from './navbar.component';
 import { MenuModule } from '../shared/menu/menu.module';
+import { FormsModule } from '@angular/forms';
 
 const effects = [
   NavbarEffects
@@ -24,6 +25,7 @@ const ENTRY_COMPONENTS = [
   imports: [
     CommonModule,
     MenuModule,
+    FormsModule,
     EffectsModule.forFeature(effects),
     CoreModule.forRoot()
   ],

src/app/root/root.component.html

@@ -0,0 +1,30 @@
+<div class="outer-wrapper" *ngIf="isNotAuthBlocking; else authLoader">
+  <ds-admin-sidebar></ds-admin-sidebar>
+  <div class="inner-wrapper"  [@slideSidebarPadding]="{
+     value: (!(sidebarVisible | async) ? 'hidden' : (slideSidebarOver | async) ? 'shown' : 'expanded'),
+     params: {collapsedSidebarWidth: (collapsedSidebarWidth | async), totalSidebarWidth: (totalSidebarWidth | async)}
+    }">
+    <ds-header-navbar-wrapper></ds-header-navbar-wrapper>
+
+    <ds-notifications-board
+      [options]="notificationOptions">
+    </ds-notifications-board>
+    <main class="main-content">
+      <div class="container">
+        <ds-breadcrumbs></ds-breadcrumbs>
+      </div>
+
+      <div class="container" *ngIf="isLoading">
+        <ds-loading message="{{'loading.default' | translate}}"></ds-loading>
+      </div>
+      <router-outlet></router-outlet>
+    </main>
+
+    <ds-footer></ds-footer>
+  </div>
+</div>
+<ng-template #authLoader>
+  <div class="text-center ds-full-screen-loader d-flex align-items-center flex-column justify-content-center">
+    <ds-loading [showMessage]="false"></ds-loading>
+  </div>
+</ng-template>

src/app/root/root.component.spec.ts

@@ -0,0 +1,77 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { RootComponent } from './root.component';
+import { CommonModule } from '@angular/common';
+import { StoreModule } from '@ngrx/store';
+import { authReducer } from '../core/auth/auth.reducer';
+import { storeModuleConfig } from '../app.reducer';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { TranslateLoaderMock } from '../shared/mocks/translate-loader.mock';
+import { NativeWindowRef, NativeWindowService } from '../core/services/window.service';
+import { MetadataService } from '../core/metadata/metadata.service';
+import { MetadataServiceMock } from '../shared/mocks/metadata-service.mock';
+import { Angulartics2GoogleAnalytics } from 'angulartics2/ga';
+import { AngularticsProviderMock } from '../shared/mocks/angulartics-provider.service.mock';
+import { Angulartics2DSpace } from '../statistics/angulartics/dspace-provider';
+import { AuthService } from '../core/auth/auth.service';
+import { AuthServiceMock } from '../shared/mocks/auth.service.mock';
+import { ActivatedRoute, Router } from '@angular/router';
+import { RouterMock } from '../shared/mocks/router.mock';
+import { MockActivatedRoute } from '../shared/mocks/active-router.mock';
+import { MenuService } from '../shared/menu/menu.service';
+import { CSSVariableService } from '../shared/sass-helper/sass-helper.service';
+import { CSSVariableServiceStub } from '../shared/testing/css-variable-service.stub';
+import { HostWindowService } from '../shared/host-window.service';
+import { HostWindowServiceStub } from '../shared/testing/host-window-service.stub';
+import { LocaleService } from '../core/locale/locale.service';
+import { provideMockStore } from '@ngrx/store/testing';
+import { RouteService } from '../core/services/route.service';
+import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
+import { MenuServiceStub } from '../shared/testing/menu-service.stub';
+
+describe('RootComponent', () => {
+  let component: RootComponent;
+  let fixture: ComponentFixture<RootComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [
+        CommonModule,
+        StoreModule.forRoot(authReducer, storeModuleConfig),
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock
+          }
+        }),
+      ],
+      declarations: [RootComponent], // declare the test component
+      providers: [
+        { provide: NativeWindowService, useValue: new NativeWindowRef() },
+        { provide: MetadataService, useValue: new MetadataServiceMock() },
+        { provide: Angulartics2GoogleAnalytics, useValue: new AngularticsProviderMock() },
+        { provide: Angulartics2DSpace, useValue: new AngularticsProviderMock() },
+        { provide: AuthService, useValue: new AuthServiceMock() },
+        { provide: Router, useValue: new RouterMock() },
+        { provide: ActivatedRoute, useValue: new MockActivatedRoute() },
+        { provide: MenuService, useValue: new MenuServiceStub() },
+        { provide: CSSVariableService, useClass: CSSVariableServiceStub },
+        { provide: HostWindowService, useValue: new HostWindowServiceStub(800) },
+        { provide: LocaleService, useValue: {} },
+        provideMockStore({ core: { auth: { loading: false } } } as any),
+        RootComponent,
+        RouteService
+      ],
+      schemas: [CUSTOM_ELEMENTS_SCHEMA]
+    }).compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(RootComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/root/root.component.ts

@@ -0,0 +1,79 @@
+import { map } from 'rxjs/operators';
+import { Component, Inject, OnInit, Optional, Input } from '@angular/core';
+import { Router } from '@angular/router';
+
+import { combineLatest as combineLatestObservable, Observable, of } from 'rxjs';
+import { Store } from '@ngrx/store';
+import { TranslateService } from '@ngx-translate/core';
+import { Angulartics2GoogleAnalytics } from 'angulartics2/ga';
+
+import { MetadataService } from '../core/metadata/metadata.service';
+import { HostWindowState } from '../shared/search/host-window.reducer';
+import { NativeWindowRef, NativeWindowService } from '../core/services/window.service';
+import { AuthService } from '../core/auth/auth.service';
+import { CSSVariableService } from '../shared/sass-helper/sass-helper.service';
+import { MenuService } from '../shared/menu/menu.service';
+import { MenuID } from '../shared/menu/initial-menus-state';
+import { HostWindowService } from '../shared/host-window.service';
+import { ThemeConfig } from '../../config/theme.model';
+import { Angulartics2DSpace } from '../statistics/angulartics/dspace-provider';
+import { environment } from '../../environments/environment';
+import { LocaleService } from '../core/locale/locale.service';
+import { KlaroService } from '../shared/cookies/klaro.service';
+import { slideSidebarPadding } from '../shared/animations/slide';
+
+@Component({
+  selector: 'ds-root',
+  templateUrl: './root.component.html',
+  styleUrls: ['./root.component.scss'],
+  animations: [slideSidebarPadding],
+})
+export class RootComponent implements OnInit {
+  sidebarVisible: Observable<boolean>;
+  slideSidebarOver: Observable<boolean>;
+  collapsedSidebarWidth: Observable<string>;
+  totalSidebarWidth: Observable<string>;
+  theme: Observable<ThemeConfig> = of({} as any);
+  notificationOptions = environment.notifications;
+  models;
+
+  /**
+   * Whether or not the authentication is currently blocking the UI
+   */
+  @Input() isNotAuthBlocking: boolean;
+
+  /**
+   * Whether or not the the application is loading;
+   */
+  @Input() isLoading: boolean;
+
+  constructor(
+    @Inject(NativeWindowService) private _window: NativeWindowRef,
+    private translate: TranslateService,
+    private store: Store<HostWindowState>,
+    private metadata: MetadataService,
+    private angulartics2GoogleAnalytics: Angulartics2GoogleAnalytics,
+    private angulartics2DSpace: Angulartics2DSpace,
+    private authService: AuthService,
+    private router: Router,
+    private cssService: CSSVariableService,
+    private menuService: MenuService,
+    private windowService: HostWindowService,
+    private localeService: LocaleService,
+    @Optional() private cookiesService: KlaroService
+  ) {
+  }
+
+  ngOnInit() {
+    this.sidebarVisible = this.menuService.isMenuVisible(MenuID.ADMIN);
+
+    this.collapsedSidebarWidth = this.cssService.getVariable('collapsedSidebarWidth');
+    this.totalSidebarWidth = this.cssService.getVariable('totalSidebarWidth');
+
+    const sidebarCollapsed = this.menuService.isMenuCollapsed(MenuID.ADMIN);
+    this.slideSidebarOver = combineLatestObservable(sidebarCollapsed, this.windowService.isXsOrSm())
+      .pipe(
+        map(([collapsed, mobile]) => collapsed || mobile)
+      );
+  }
+}

src/app/root/themed-root.component.ts

@@ -0,0 +1,35 @@
+import { ThemedComponent } from '../shared/theme-support/themed.component';
+import { RootComponent } from './root.component';
+import { Component, Input } from '@angular/core';
+
+@Component({
+  selector: 'ds-themed-root',
+  styleUrls: [],
+  templateUrl: '../shared/theme-support/themed.component.html',
+})
+export class ThemedRootComponent extends ThemedComponent<RootComponent> {
+  /**
+   * Whether or not the authentication is currently blocking the UI
+   */
+  @Input() isNotAuthBlocking: boolean;
+
+  /**
+   * Whether or not the the application is loading;
+   */
+  @Input() isLoading: boolean;
+
+  protected inAndOutputNames: (keyof RootComponent & keyof this)[] = ['isLoading', 'isNotAuthBlocking'];
+
+  protected getComponentName(): string {
+    return 'RootComponent';
+  }
+
+  protected importThemedComponent(themeName: string): Promise<any> {
+    return import(`../../themes/${themeName}/app/root/root.component`);
+  }
+
+  protected importUnthemedComponent(): Promise<any> {
+    return import(`./root.component`);
+  }
+
+}

src/app/search-navbar/search-navbar.component.scss

@@ -1,5 +1,5 @@
 input[type="text"] {
-  margin-top: -0.5 * $font-size-base;
+  margin-top: calc(-0.5 * var(--bs-font-size-base));
 
   &:focus {
     background-color: rgba(255, 255, 255, 0.5) !important;
@@ -16,7 +16,7 @@ a.submit-icon {
 
 
 
-@media screen and (max-width: map-get($grid-breakpoints, sm)) {
+@media screen and (max-width: var(--ds-grid-breakpoints-sm)) {
   #query:focus {
     max-width: 250px !important;
     width: 40vw !important;

src/app/shared/chips/chips.component.scss

@@ -1,5 +1,5 @@
 .chip-selected {
-  background-color: map-get($theme-colors, info) !important;
+  background-color: var(--bs-info) !important;
 }
 
 .chip-label {

src/app/shared/collection-dropdown/collection-dropdown.component.scss

@@ -1,15 +1,15 @@
 .scrollable-menu {
   height: auto;
-  max-height: $dropdown-menu-max-height;
+  max-height: var(--ds-dropdown-menu-max-height);
   overflow-x: hidden;
 }
 
 .collection-item {
-  border-bottom: $dropdown-border-width solid $dropdown-border-color;
+  border-bottom: var(--bs-dropdown-border-width) solid var(--bs-dropdown-border-color);
 }
 
 #collectionControlsDropdownMenu {
   outline: 0;
   left: 0 !important;
-  box-shadow: $btn-focus-box-shadow;
+  box-shadow: var(--bs-btn-focus-box-shadow);
 }

src/app/shared/dso-page/dso-page-edit-button/dso-page-edit-button.component.scss

@@ -1,3 +1,3 @@
 .btn-dark {
-  background-color: $admin-sidebar-bg;
+  background-color: var(--ds-admin-sidebar-bg);
 }

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

@@ -1,5 +1,5 @@
 .scrollable-menu {
   height: auto;
-  max-height: $dso-selector-list-max-height;
+  max-height: var(--ds-dso-selector-list-max-height);
   overflow-x: hidden;
 }

src/app/shared/file-dropzone-no-uploader/file-dropzone-no-uploader.scss

@@ -1,5 +1,5 @@
 .ds-base-drop-zone {
-  border: 2px dashed $gray-600;
+  border: 2px dashed var(--bs-gray-600);
 }
 
 .ds-document-drop-zone {
@@ -9,21 +9,21 @@
 }
 
 .ds-document-drop-zone-active {
-  z-index: $drop-zone-area-z-index !important;
+  z-index: var(--ds-drop-zone-area-z-index) !important;
 }
 
 .ds-document-drop-zone-inner {
-  background-color: rgba($white, 0.7);
-  z-index: $drop-zone-area-inner-z-index;
+  background-color: rgba(255, 255, 255, 0.7);
+  z-index: var(--ds-drop-zone-area-inner-z-index);
   top: 0;
   left: 0;
 }
 
 .ds-document-drop-zone-inner-content {
-  border: 4px dashed map-get($theme-colors, primary);
-  z-index: $drop-zone-area-inner-z-index;
+  border: 4px dashed var(--bs-primary);
+  z-index: var(--ds-drop-zone-area-inner-z-index);
 }
 
 .ds-document-drop-zone-inner-content p {
-  font-size: ($font-size-lg * 2.5);
+  font-size: calc(var(--bs-font-size-lg) * 2.5);
 }

src/app/shared/form/builder/ds-dynamic-form-ui/existing-metadata-list-element/existing-metadata-list-element.component.scss

@@ -1,3 +1,3 @@
 span.text-contents{
-    padding: $btn-padding-y 0;
+    padding: var(--bs-btn-padding-y) 0;
 }

src/app/shared/form/builder/ds-dynamic-form-ui/existing-relation-list-element/existing-relation-list-element.component.scss

@@ -1,3 +1,3 @@
 span.text-contents{
-    padding: $btn-padding-y 0;
+    padding: var(--bs-btn-padding-y) 0;
 }

src/app/shared/form/builder/ds-dynamic-form-ui/models/array-group/dynamic-form-array.component.scss

@@ -5,16 +5,16 @@
 }
 
 .cdk-drag {
-    margin-left: -(2 * $spacer);
-    margin-right: -(0.5 * $spacer);
-    padding-right: (0.5 * $spacer);
+    margin-left: calc(-2 * var(--bs-spacer));
+    margin-right: calc(-0.5 * var(--bs-spacer));
+    padding-right: calc(0.5 * var(--bs-spacer));
     .drag-icon {
         visibility: hidden;
-        width: (2 * $spacer);
-        color: $gray-600;
-        margin: $btn-padding-y 0;
-        line-height: $btn-line-height;
-        text-indent: 0.5 * $spacer
+        width: calc(2 * var(--bs-spacer));
+        color: var(--bs-gray-600);
+        margin: var(--bs-btn-padding-y) 0;
+        line-height: var(--bs-btn-line-height);
+        text-indent: calc(0.5 * var(--bs-spacer))
     }
 
     &:hover, &:focus {
@@ -37,7 +37,7 @@
 
 .cdk-drag-preview {
     background-color: white;
-    border-radius: $border-radius-sm;
+    border-radius: var(--bs-border-radius-sm);
     margin-left: 0;
     box-shadow: 0 5px 5px 0px rgba(0, 0, 0, 0.2),
     0 8px 10px 1px rgba(0, 0, 0, 0.14),

src/app/shared/form/builder/ds-dynamic-form-ui/models/lookup/dynamic-lookup.component.scss

@@ -5,7 +5,7 @@
 :host ::ng-deep .dropdown-menu {
   left: 0 !important;
   width: 100% !important;
-  max-height: $dropdown-menu-max-height;
+  max-height: var(--ds-dropdown-menu-max-height);
   overflow-y: auto !important;
   overflow-x: hidden;
 }
@@ -14,8 +14,8 @@
 :host ::ng-deep .dropdown-item:active,
 :host ::ng-deep .dropdown-item:focus,
 :host ::ng-deep .dropdown-item:hover {
-  color: $dropdown-link-hover-color !important;
-  background-color: $dropdown-link-hover-bg !important;
+  color: var(--bs-dropdown-link-hover-color) !important;
+  background-color: var(--bs-dropdown-link-hover-bg) !important;
 }
 
 div {
@@ -23,5 +23,5 @@ div {
 }
 
 .lookup-item {
-  border-bottom: $dropdown-border-width solid $dropdown-border-color;
+  border-bottom: var(--bs-dropdown-border-width) solid var(--bs-dropdown-border-color);
 }

src/app/shared/form/builder/ds-dynamic-form-ui/models/onebox/dynamic-onebox.component.scss

@@ -1,20 +1,20 @@
 :host ::ng-deep .dropdown-menu {
   width: 100% !important;
-  max-height: $dropdown-menu-max-height;
+  max-height: var(--ds-dropdown-menu-max-height);
   overflow-y: auto !important;
   overflow-x: hidden;
 }
 
 :host ::ng-deep .dropdown-item {
-  border-bottom: $dropdown-border-width solid $dropdown-border-color;
+  border-bottom: var(--bs-dropdown-border-width) solid var(--bs-dropdown-border-color);
 }
 
 :host ::ng-deep .dropdown-item.active,
 :host ::ng-deep .dropdown-item:active,
 :host ::ng-deep .dropdown-item:focus,
 :host ::ng-deep .dropdown-item:hover {
-  color: $dropdown-link-hover-color !important;
-  background-color: $dropdown-link-hover-bg !important;
+  color: var(--bs-dropdown-link-hover-color) !important;
+  background-color: var(--bs-dropdown-link-hover-bg) !important;
 }
 
 .treeview .modal-body {

src/app/shared/form/builder/ds-dynamic-form-ui/models/scrollable-dropdown/dynamic-scrollable-dropdown.component.scss

@@ -2,25 +2,25 @@
 
 .scrollable-menu {
   height: auto;
-  max-height: $dropdown-menu-max-height;
+  max-height: var(--ds-dropdown-menu-max-height);
   overflow-x: hidden;
 }
 
 .collection-item {
-  border-bottom: $dropdown-border-width solid $dropdown-border-color;
+  border-bottom: var(--bs-dropdown-border-width) solid var(--bs-dropdown-border-color);
 }
 
 .scrollable-dropdown-loading {
-  background-color: map-get($theme-colors, primary);
+  background-color: var(--bs-primary);
   color: white;
-  height: $spacer * 2 !important;
-  line-height: $spacer * 2;
+  height: calc(var(--bs-spacer) * 2) !important;
+  line-height: calc(var(--bs-spacer) * 2);
   position: sticky;
   bottom: 0;
 }
 
 .scrollable-dropdown-menu {
   left: 0 !important;
-  margin-bottom: $spacer;
+  margin-bottom: var(--bs-spacer);
   z-index: 1000;
 }

src/app/shared/form/builder/ds-dynamic-form-ui/models/tag/dynamic-tag.component.scss

@@ -10,19 +10,19 @@
 
 :host ::ng-deep .dropdown-menu {
   width: 100% !important;
-  max-height: $dropdown-menu-max-height;
+  max-height: var(--ds-dropdown-menu-max-height);
   overflow-y: scroll;
   overflow-x: hidden;
   left: 0 !important;
-  margin-top: $spacer !important;
+  margin-top: var(--bs-spacer) !important;
 }
 
 :host ::ng-deep .dropdown-item.active,
 :host ::ng-deep .dropdown-item:active,
 :host ::ng-deep .dropdown-item:focus,
 :host ::ng-deep .dropdown-item:hover {
-  color: $dropdown-link-hover-color !important;
-  background-color: $dropdown-link-hover-bg !important;
+  color: var(--bs-dropdown-link-hover-color) !important;
+  background-color: var(--bs-dropdown-link-hover-bg) !important;
 }
 
 .tag-input {

src/app/shared/form/builder/ds-dynamic-form-ui/relation-lookup-modal/search-tab/dynamic-lookup-relation-search-tab.component.scss

@@ -1,3 +1,3 @@
 .position-absolute {
-    right: $spacer;
+    right: var(--bs-spacer);
 }

src/app/shared/form/form.component.scss

@@ -5,7 +5,7 @@
 }
 
 .ds-form-input-btn {
-  border: $input-btn-border-width solid $input-border-color;
+  border: var(--bs-input-btn-border-width) solid var(--bs-input-border-color);
   border-top-left-radius: 0;
   border-bottom-left-radius: 0;
   border-left: 0;
@@ -36,9 +36,9 @@
 
 /* add padding  */
 .left-addon input {
-  padding-left: $spacer * 2.25;
+  padding-left: calc(var(--bs-spacer) * 2.25);
 }
 
 .right-addon input {
-  padding-right: $spacer * 2.25;
+  padding-right: calc(var(--bs-spacer) * 2.25);
 }

src/app/shared/input-suggestions/input-suggestions.component.scss

@@ -4,7 +4,7 @@
     .dropdown-item {
         white-space: normal;
         word-break: break-word;
-        padding: $input-padding-y $input-padding-x;
+        padding: var(--bs-input-padding-y) var(--bs-input-padding-x);
         &:focus {
             outline: none;
         }

src/app/shared/log-in/container/log-in-container.component.scss

@@ -1,18 +1,18 @@
 :host ::ng-deep .card {
-  margin-bottom: $submission-sections-margin-bottom;
+  margin-bottom: var(--ds-submission-sections-margin-bottom);
   overflow: unset;
 }
 
 .section-focus {
-  border-radius: $border-radius;
-  box-shadow: $btn-focus-box-shadow;
+  border-radius: var(--bs-border-radius);
+  box-shadow: var(--bs-btn-focus-box-shadow);
 }
 
 // TODO to remove the following when upgrading @ng-bootstrap
 :host ::ng-deep .card:first-of-type {
-  border-bottom: $card-border-width solid  $card-border-color !important;
-  border-bottom-left-radius: $card-border-radius !important;
-  border-bottom-right-radius: $card-border-radius !important;
+  border-bottom: var(--bs-card-border-width) solid  var(--bs-card-border-color) !important;
+  border-bottom-left-radius: var(--bs-card-border-radius) !important;
+  border-bottom-right-radius: var(--bs-card-border-radius) !important;
 }
 
 :host ::ng-deep .card-header button {

src/app/shared/metadata-representation/metadata-representation-loader.component.ts

@@ -6,6 +6,7 @@ import { GenericConstructor } from '../../core/shared/generic-constructor';
 import { MetadataRepresentationListElementComponent } from '../object-list/metadata-representation-list-element/metadata-representation-list-element.component';
 import { MetadataRepresentationDirective } from './metadata-representation.directive';
 import { hasValue } from '../empty.util';
+import { ThemeService } from '../theme-support/theme.service';
 
 @Component({
   selector: 'ds-metadata-representation-loader',
@@ -42,7 +43,10 @@ export class MetadataRepresentationLoaderComponent implements OnInit {
    */
   @ViewChild(MetadataRepresentationDirective, {static: true}) mdRepDirective: MetadataRepresentationDirective;
 
-  constructor(private componentFactoryResolver: ComponentFactoryResolver) {
+  constructor(
+    private componentFactoryResolver: ComponentFactoryResolver,
+    private themeService: ThemeService
+  ) {
   }
 
   /**
@@ -64,6 +68,6 @@ export class MetadataRepresentationLoaderComponent implements OnInit {
    * @returns {string}
    */
   private getComponent(): GenericConstructor<MetadataRepresentationListElementComponent> {
-    return getMetadataRepresentationComponent(this.mdRepresentation.itemType, this.mdRepresentation.representationType, this.context);
+    return getMetadataRepresentationComponent(this.mdRepresentation.itemType, this.mdRepresentation.representationType, this.context, this.themeService.getThemeName());
   }
 }

src/app/shared/metadata-representation/metadata-representation.decorator.ts

@@ -6,15 +6,17 @@ export const map = new Map();
 
 export const DEFAULT_ENTITY_TYPE = 'Publication';
 export const DEFAULT_REPRESENTATION_TYPE = MetadataRepresentationType.PlainText;
-export const DEFAULT_CONTEXT = Context.Undefined;
+export const DEFAULT_CONTEXT = Context.Any;
+export const DEFAULT_THEME = '*';
 
 /**
  * Decorator function to store metadata representation mapping
  * @param entityType The entity type the component represents
  * @param mdRepresentationType The metadata representation type the component represents
  * @param context The optional context the component represents
+ * @param theme The optional theme for the component
  */
-export function metadataRepresentationComponent(entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context = DEFAULT_CONTEXT) {
+export function metadataRepresentationComponent(entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context = DEFAULT_CONTEXT, theme = DEFAULT_THEME) {
   return function decorator(component: any) {
     if (hasNoValue(map.get(entityType))) {
       map.set(entityType, new Map());
@@ -23,10 +25,14 @@ export function metadataRepresentationComponent(entityType: string, mdRepresenta
       map.get(entityType).set(mdRepresentationType, new Map());
     }
 
-    if (hasValue(map.get(entityType).get(mdRepresentationType).get(context))) {
+    if (hasNoValue(map.get(entityType).get(mdRepresentationType).get(context))) {
+      map.get(entityType).get(mdRepresentationType).set(context, new Map());
+    }
+
+    if (hasValue(map.get(entityType).get(mdRepresentationType).get(context).get(theme))) {
       throw new Error(`There can't be more than one component to render Entity of type "${entityType}" in MetadataRepresentation "${mdRepresentationType}" with context "${context}"`);
     }
-    map.get(entityType).get(mdRepresentationType).set(context, component);
+    map.get(entityType).get(mdRepresentationType).get(context).set(theme, component);
   };
 }
 
@@ -35,22 +41,32 @@ export function metadataRepresentationComponent(entityType: string, mdRepresenta
  * @param entityType The entity type to match
  * @param mdRepresentationType The metadata representation to match
  * @param context The context to match
+ * @param theme the theme to match
  */
-export function getMetadataRepresentationComponent(entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context = DEFAULT_CONTEXT) {
+export function getMetadataRepresentationComponent(entityType: string, mdRepresentationType: MetadataRepresentationType, context: Context = DEFAULT_CONTEXT, theme = DEFAULT_THEME) {
   const mapForEntity = map.get(entityType);
   if (hasValue(mapForEntity)) {
     const entityAndMDRepMap = mapForEntity.get(mdRepresentationType);
     if (hasValue(entityAndMDRepMap)) {
-      if (hasValue(entityAndMDRepMap.get(context))) {
-        return entityAndMDRepMap.get(context);
+      const contextMap = entityAndMDRepMap.get(context);
+      if (hasValue(contextMap)) {
+        if (hasValue(contextMap.get(theme))) {
+          return contextMap.get(theme);
         }
-      if (hasValue(entityAndMDRepMap.get(DEFAULT_CONTEXT))) {
-        return entityAndMDRepMap.get(DEFAULT_CONTEXT);
+        if (hasValue(contextMap.get(DEFAULT_THEME))) {
+          return contextMap.get(DEFAULT_THEME);
         }
       }
-    if (hasValue(mapForEntity.get(DEFAULT_REPRESENTATION_TYPE))) {
-      return mapForEntity.get(DEFAULT_REPRESENTATION_TYPE).get(DEFAULT_CONTEXT);
+      if (hasValue(entityAndMDRepMap.get(DEFAULT_CONTEXT)) &&
+        hasValue(entityAndMDRepMap.get(DEFAULT_CONTEXT).get(DEFAULT_THEME))) {
+        return entityAndMDRepMap.get(DEFAULT_CONTEXT).get(DEFAULT_THEME);
       }
     }
-  return map.get(DEFAULT_ENTITY_TYPE).get(DEFAULT_REPRESENTATION_TYPE).get(DEFAULT_CONTEXT);
+    if (hasValue(mapForEntity.get(DEFAULT_REPRESENTATION_TYPE)) &&
+      hasValue(mapForEntity.get(DEFAULT_REPRESENTATION_TYPE).get(DEFAULT_CONTEXT)) &&
+      hasValue(mapForEntity.get(DEFAULT_REPRESENTATION_TYPE).get(DEFAULT_CONTEXT).get(DEFAULT_THEME))) {
+      return mapForEntity.get(DEFAULT_REPRESENTATION_TYPE).get(DEFAULT_CONTEXT).get(DEFAULT_THEME);
+    }
+  }
+  return map.get(DEFAULT_ENTITY_TYPE).get(DEFAULT_REPRESENTATION_TYPE).get(DEFAULT_CONTEXT).get(DEFAULT_THEME);
 }

src/app/shared/mocks/theme-service.mock.ts

@@ -0,0 +1,7 @@
+import { ThemeService } from '../theme-support/theme.service';
+
+export function getMockThemeService(): ThemeService {
+  return jasmine.createSpyObj('themeService', {
+    getThemeName: 'base'
+  });
+}

src/app/shared/ngrx/no-op.action.ts

@@ -0,0 +1,14 @@
+import { Action } from '@ngrx/store';
+import { type } from './type';
+
+export const NO_OP_ACTION_TYPE = type('dspace/ngrx/NO_OP_ACTION');
+
+/**
+ * An action to use when nothing needs to happen, but you're forced to dispatch an action anyway.
+ * e.g. an effect that needs to do something if a certain check succeeds, and nothing otherwise.
+ *
+ * It should not be used in any reducer or listened for in any effect.
+ */
+export class NoOpAction implements Action {
+  public readonly type = NO_OP_ACTION_TYPE;
+}

src/app/shared/notifications/notification/notification.component.scss

@@ -1,6 +1,6 @@
 .alert {
   display: inline-block;
-  min-width: $modal-sm;
+  min-width: var(--bs-modal-sm);
   text-align: left;
 }
 
@@ -19,14 +19,14 @@
 }
 
 .alert-success .notification-progress-loader span {
-  background: darken(adjust-hue(map-get($theme-colors, success), -10), 10%);
+  background: var(--ds-notification-bg-success);
 }
 .alert-danger .notification-progress-loader span {
-  background: darken(adjust-hue(map-get($theme-colors, danger), -10), 10%);
+  background: var(--ds-notification-bg-danger);
 }
 .alert-info .notification-progress-loader span {
-  background: darken(adjust-hue(map-get($theme-colors, info), -10), 10%);
+  background: var(--ds-notification-bg-info);
 }
 .alert-warning .notification-progress-loader span {
-  background: darken(adjust-hue(map-get($theme-colors, warning), -10), 10%);
+  background: var(--ds-notification-bg-warning);
 }

src/app/shared/notifications/notifications-board/notifications-board.component.scss

@@ -1,5 +1,5 @@
 .notifications-wrapper {
-  z-index: $zindex-popover;
+  z-index: var(--bs-zindex-popover);
   text-align: right;
   @include word-wrap;
   .notification {
@@ -37,7 +37,7 @@
   transform: translate(-50%, -50%);
 }
 
-@media screen and (max-width: map-get($grid-breakpoints, sm)) {
+@media screen and (max-width: var(--ds-grid-breakpoints-sm)) {
   .notifications-wrapper {
     width: auto;
     left: 0;

src/app/shared/object-collection/shared/listable-object/listable-object-component-loader.component.ts

@@ -1,4 +1,11 @@
-import { Component, ComponentFactoryResolver, ElementRef, Input, OnInit, ViewChild } from '@angular/core';
+import {
+  Component,
+  ComponentFactoryResolver,
+  ElementRef,
+  Input,
+  OnInit,
+  ViewChild
+} from '@angular/core';
 import { ListableObject } from '../listable-object.model';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { Context } from '../../../../core/shared/context.model';
@@ -7,6 +14,7 @@ import { GenericConstructor } from '../../../../core/shared/generic-constructor'
 import { ListableObjectDirective } from './listable-object.directive';
 import { CollectionElementLinkType } from '../../collection-element-link.type';
 import { hasValue } from '../../../empty.util';
+import { ThemeService } from '../../../theme-support/theme.service';
 
 @Component({
   selector: 'ds-listable-object-component-loader',
@@ -83,7 +91,10 @@ export class ListableObjectComponentLoaderComponent implements OnInit {
    */
   withdrawnBadge = false;
 
-  constructor(private componentFactoryResolver: ComponentFactoryResolver) {
+  constructor(
+    private componentFactoryResolver: ComponentFactoryResolver,
+    private themeService: ThemeService
+  ) {
   }
 
   /**
@@ -132,6 +143,6 @@ export class ListableObjectComponentLoaderComponent implements OnInit {
    * @returns {GenericConstructor<Component>}
    */
   private getComponent(): GenericConstructor<Component> {
-    return getListableObjectComponent(this.object.getRenderTypes(), this.viewMode, this.context);
+    return getListableObjectComponent(this.object.getRenderTypes(), this.viewMode, this.context, this.themeService.getThemeName());
   }
 }