Merge branch 'main' into CST-7755-refactoring

# Conflicts:
#	src/app/core/core.module.ts
#	src/app/shared/shared.module.ts

config/config.example.yml

@@ -32,12 +32,60 @@ cache:
   # NOTE: how long should objects be cached for by default
   msToLive:
     default: 900000 # 15 minutes
-  control: max-age=60 # revalidate browser
+  # Default 'Cache-Control' HTTP Header to set for all static content (including compiled *.js files)
+  # Defaults to max-age=604,800 seconds (one week). This lets a user's browser know that it can cache these
+  # files for one week, after which they will be "stale" and need to be redownloaded.
+  # NOTE: When updates are made to compiled *.js files, it will automatically bypass this browser cache, because
+  # all compiled *.js files include a unique hash in their name which updates when content is modified.
+  control: max-age=604800 # revalidate browser
   autoSync:
     defaultTime: 0
     maxBufferSize: 100
     timePerMethod:
       PATCH: 3 # time in seconds
+  # In-memory cache(s) of server-side rendered pages. These caches will store the most recently accessed public pages.
+  # Pages are automatically added/dropped from these caches based on how recently they have been used.
+  # Restarting the app clears all page caches.
+  # NOTE: To control the cache size, use the "max" setting. Keep in mind, individual cached pages are usually small (<100KB).
+  # Enabling *both* caches will mean that a page may be cached twice, once in each cache (but may expire at different times via timeToLive).
+  serverSide:
+    # Set to true to see all cache hits/misses/refreshes in your console logs. Useful for debugging SSR caching issues.
+    debug: false
+    # When enabled (i.e. max > 0), known bots will be sent pages from a server side cache specific for bots.
+    # (Keep in mind, bot detection cannot be guarranteed. It is possible some bots will bypass this cache.)
+    botCache:
+      # Maximum number of pages to cache for known bots. Set to zero (0) to disable server side caching for bots.
+      # Default is 1000, which means the 1000 most recently accessed public pages will be cached.
+      # As all pages are cached in server memory, increasing this value will increase memory needs.
+      # Individual cached pages are usually small (<100KB), so max=1000 should only require ~100MB of memory.
+      max: 1000
+      # Amount of time after which cached pages are considered stale (in ms). After becoming stale, the cached
+      # copy is automatically refreshed on the next request.
+      # NOTE: For the bot cache, this setting may impact how quickly search engine bots will index new content on your site.
+      # For example, setting this to one week may mean that search engine bots may not find all new content for one week.
+      timeToLive: 86400000 # 1 day
+      # When set to true, after timeToLive expires, the next request will receive the *cached* page & then re-render the page
+      # behind the scenes to update the cache. This ensures users primarily interact with the cache, but may receive stale pages (older than timeToLive).
+      # When set to false, after timeToLive expires, the next request will wait on SSR to complete & receive a fresh page (which is then saved to cache).
+      # This ensures stale pages (older than timeToLive) are never returned from the cache, but some users will wait on SSR.
+      allowStale: true
+    # When enabled (i.e. max > 0), all anonymous users will be sent pages from a server side cache.
+    # This allows anonymous users to interact more quickly with the site, but also means they may see slightly
+    # outdated content (based on timeToLive)
+    anonymousCache:
+      # Maximum number of pages to cache. Default is zero (0) which means anonymous user cache is disabled.
+      # As all pages are cached in server memory, increasing this value will increase memory needs.
+      # Individual cached pages are usually small (<100KB), so a value of max=1000 would only require ~100MB of memory. 
+      max: 0
+      # Amount of time after which cached pages are considered stale (in ms). After becoming stale, the cached
+      # copy is automatically refreshed on the next request.
+      # NOTE: For the anonymous cache, it is recommended to keep this value low to avoid anonymous users seeing outdated content.
+      timeToLive: 10000 # 10 seconds
+      # When set to true, after timeToLive expires, the next request will receive the *cached* page & then re-render the page
+      # behind the scenes to update the cache. This ensures users primarily interact with the cache, but may receive stale pages (older than timeToLive).
+      # When set to false, after timeToLive expires, the next request will wait on SSR to complete & receive a fresh page (which is then saved to cache).
+      # This ensures stale pages (older than timeToLive) are never returned from the cache, but some users will wait on SSR.
+      allowStale: true
 
 # Authentication settings
 auth:

package.json

@@ -99,6 +99,7 @@
     "fast-json-patch": "^3.0.0-1",
     "filesize": "^6.1.0",
     "http-proxy-middleware": "^1.0.5",
+    "isbot": "^3.6.5",
     "js-cookie": "2.2.1",
     "js-yaml": "^4.1.0",
     "json5": "^2.2.2",
@@ -106,6 +107,7 @@
     "jwt-decode": "^3.1.2",
     "klaro": "^0.7.18",
     "lodash": "^4.17.21",
+    "lru-cache": "^7.14.1",
     "markdown-it": "^13.0.1",
     "markdown-it-mathjax3": "^4.3.1",
     "mirador": "^3.3.0",

server.ts

@@ -28,6 +28,8 @@ import * as expressStaticGzip from 'express-static-gzip';
 /* eslint-enable import/no-namespace */
 
 import axios from 'axios';
+import LRU from 'lru-cache';
+import isbot from 'isbot';
 import { createCertificate } from 'pem';
 import { createServer } from 'https';
 import { json } from 'body-parser';
@@ -35,7 +37,6 @@ import { json } from 'body-parser';
 import { existsSync, readFileSync } from 'fs';
 import { join } from 'path';
 
-import { APP_BASE_HREF } from '@angular/common';
 import { enableProdMode } from '@angular/core';
 
 import { ngExpressEngine } from '@nguniversal/express-engine';
@@ -53,6 +54,8 @@ import { buildAppConfig } from './src/config/config.server';
 import { APP_CONFIG, AppConfig } from './src/config/app-config.interface';
 import { extendEnvironmentWithAppConfig } from './src/config/config.util';
 import { logStartupMessage } from './startup-message';
+import { TOKENITEM } from 'src/app/core/auth/models/auth-token-info.model';
+
 
 /*
  * Set path for the browser application's dist folder
@@ -61,12 +64,18 @@ const DIST_FOLDER = join(process.cwd(), 'dist/browser');
 // Set path fir IIIF viewer.
 const IIIF_VIEWER = join(process.cwd(), 'dist/iiif');
 
-const indexHtml = existsSync(join(DIST_FOLDER, 'index.html')) ? 'index.html' : 'index';
+const indexHtml = join(DIST_FOLDER, 'index.html');
 
 const cookieParser = require('cookie-parser');
 
 const appConfig: AppConfig = buildAppConfig(join(DIST_FOLDER, 'assets/config.json'));
 
+// cache of SSR pages for known bots, only enabled in production mode
+let botCache: LRU<string, any>;
+
+// cache of SSR pages for anonymous users. Disabled by default, and only available in production mode
+let anonymousCache: LRU<string, any>;
+
 // extend environment with app config for server
 extendEnvironmentWithAppConfig(environment, appConfig);
 
@@ -87,10 +96,12 @@ export function app() {
   /*
    * If production mode is enabled in the environment file:
    * - Enable Angular's production mode
+   * - Initialize caching of SSR rendered pages (if enabled in config.yml)
    * - Enable compression for SSR reponses. See [compression](https://github.com/expressjs/compression)
    */
   if (environment.production) {
     enableProdMode();
+    initCache();
     server.use(compression({
       // only compress responses we've marked as SSR
       // otherwise, this middleware may compress files we've chosen not to compress via compression-webpack-plugin
@@ -106,13 +117,13 @@ export function app() {
 
   /*
    * Add cookie parser middleware
-   * See [morgan](https://github.com/expressjs/cookie-parser)
+   * See [cookie-parser](https://github.com/expressjs/cookie-parser)
    */
   server.use(cookieParser());
 
   /*
-   * Add parser for request bodies
-   * See [morgan](https://github.com/expressjs/body-parser)
+   * Add JSON parser for request bodies
+   * See [body-parser](https://github.com/expressjs/body-parser)
    */
   server.use(json());
 
@@ -186,7 +197,7 @@ export function app() {
    * Serve static resources (images, i18n messages, …)
    * Handle pre-compressed files with [express-static-gzip](https://github.com/tkoenig89/express-static-gzip)
    */
-  router.get('*.*', cacheControl, expressStaticGzip(DIST_FOLDER, {
+  router.get('*.*', addCacheControl, expressStaticGzip(DIST_FOLDER, {
     index: false,
     enableBrotli: true,
     orderPreference: ['br', 'gzip'],
@@ -202,8 +213,11 @@ export function app() {
    */
   server.get('/app/health', healthCheck);
 
-  // Register the ngApp callback function to handle incoming requests
-  router.get('*', ngApp);
+  /**
+   * Default sending all incoming requests to ngApp() function, after first checking for a cached
+   * copy of the page (see cacheCheck())
+   */
+  router.get('*', cacheCheck, ngApp);
 
   server.use(environment.ui.nameSpace, router);
 
@@ -215,60 +229,242 @@ export function app() {
  */
 function ngApp(req, res) {
   if (environment.universal.preboot) {
-    res.render(indexHtml, {
-      req,
-      res,
-      preboot: environment.universal.preboot,
-      async: environment.universal.async,
-      time: environment.universal.time,
-      baseUrl: environment.ui.nameSpace,
-      originUrl: environment.ui.baseUrl,
-      requestUrl: req.originalUrl,
-      providers: [{ provide: APP_BASE_HREF, useValue: req.baseUrl }]
-    }, (err, data) => {
-      if (hasNoValue(err) && hasValue(data)) {
-        res.locals.ssr = true;  // mark response as SSR
-        res.send(data);
-      } else if (hasValue(err) && err.code === 'ERR_HTTP_HEADERS_SENT') {
-        // When this error occurs we can't fall back to CSR because the response has already been
-        // sent. These errors occur for various reasons in universal, not all of which are in our
-        // control to solve.
-        console.warn('Warning [ERR_HTTP_HEADERS_SENT]: Tried to set headers after they were sent to the client');
-      } else {
-        console.warn('Error in SSR, serving for direct CSR.');
-        if (hasValue(err)) {
-          console.warn('Error details : ', err);
-        }
-        res.render(indexHtml, {
-          req,
-          providers: [{
-            provide: APP_BASE_HREF,
-            useValue: req.baseUrl
-          }]
-        });
-      }
-    });
+    // Render the page to user via SSR (server side rendering)
+    serverSideRender(req, res);
   } else {
     // If preboot is disabled, just serve the client
-    console.log('Universal off, serving for direct CSR');
-    res.render(indexHtml, {
-      req,
-      providers: [{
-        provide: APP_BASE_HREF,
-        useValue: req.baseUrl
-      }]
+    console.log('Universal off, serving for direct client-side rendering (CSR)');
+    clientSideRender(req, res);
+  }
+}
+
+/**
+ * Render page content on server side using Angular SSR. By default this page content is
+ * returned to the user.
+ * @param req current request
+ * @param res current response
+ * @param sendToUser if true (default), send the rendered content to the user.
+ * If false, then only save this rendered content to the in-memory cache (to refresh cache).
+ */
+function serverSideRender(req, res, sendToUser: boolean = true) {
+  // Render the page via SSR (server side rendering)
+  res.render(indexHtml, {
+    req,
+    res,
+    preboot: environment.universal.preboot,
+    async: environment.universal.async,
+    time: environment.universal.time,
+    baseUrl: environment.ui.nameSpace,
+    originUrl: environment.ui.baseUrl,
+    requestUrl: req.originalUrl,
+  }, (err, data) => {
+    if (hasNoValue(err) && hasValue(data)) {
+      // save server side rendered page to cache (if any are enabled)
+      saveToCache(req, data);
+      if (sendToUser) {
+        res.locals.ssr = true;  // mark response as SSR (enables text compression)
+        // send rendered page to user
+        res.send(data);
+      }
+    } else if (hasValue(err) && err.code === 'ERR_HTTP_HEADERS_SENT') {
+      // When this error occurs we can't fall back to CSR because the response has already been
+      // sent. These errors occur for various reasons in universal, not all of which are in our
+      // control to solve.
+      console.warn('Warning [ERR_HTTP_HEADERS_SENT]: Tried to set headers after they were sent to the client');
+    } else {
+      console.warn('Error in server-side rendering (SSR)');
+      if (hasValue(err)) {
+        console.warn('Error details : ', err);
+      }
+      if (sendToUser) {
+        console.warn('Falling back to serving direct client-side rendering (CSR).');
+        clientSideRender(req, res);
+      }
+    }
+  });
+}
+
+/**
+ * Send back response to user to trigger direct client-side rendering (CSR)
+ * @param req current request
+ * @param res current response
+ */
+function clientSideRender(req, res) {
+  res.sendFile(indexHtml);
+}
+
+
+/*
+ * Adds a Cache-Control HTTP header to the response.
+ * The cache control value can be configured in the config.*.yml file
+ * Defaults to max-age=604,800 seconds (1 week)
+ */
+function addCacheControl(req, res, next) {
+  // instruct browser to revalidate
+  res.header('Cache-Control', environment.cache.control || 'max-age=604800');
+  next();
+}
+
+/*
+ * Initialize server-side caching of pages rendered via SSR.
+ */
+function initCache() {
+  if (botCacheEnabled()) {
+    // Initialize a new "least-recently-used" item cache (where least recently used pages are removed first)
+    // See https://www.npmjs.com/package/lru-cache
+    // When enabled, each page defaults to expiring after 1 day
+    botCache = new LRU( {
+      max: environment.cache.serverSide.botCache.max,
+      ttl: environment.cache.serverSide.botCache.timeToLive || 24 * 60 * 60 * 1000, // 1 day
+      allowStale: environment.cache.serverSide.botCache.allowStale ?? true // if object is stale, return stale value before deleting
+    });
+  }
+
+  if (anonymousCacheEnabled()) {
+    // NOTE: While caches may share SSR pages, this cache must be kept separately because the timeToLive
+    // may expire pages more frequently.
+    // When enabled, each page defaults to expiring after 10 seconds (to minimize anonymous users seeing out-of-date content)
+    anonymousCache = new LRU( {
+      max: environment.cache.serverSide.anonymousCache.max,
+      ttl: environment.cache.serverSide.anonymousCache.timeToLive || 10 * 1000, // 10 seconds
+      allowStale: environment.cache.serverSide.anonymousCache.allowStale ?? true // if object is stale, return stale value before deleting
     });
   }
 }
 
-/*
- * Adds a cache control header to the response
- * The cache control value can be configured in the environments file and defaults to max-age=60
+/**
+ * Return whether bot-specific server side caching is enabled in configuration.
  */
-function cacheControl(req, res, next) {
-  // instruct browser to revalidate
-  res.header('Cache-Control', environment.cache.control || 'max-age=60');
-  next();
+function botCacheEnabled(): boolean {
+  // Caching is only enabled if SSR is enabled AND
+  // "max" pages to cache is greater than zero
+  return environment.universal.preboot && environment.cache.serverSide.botCache.max && (environment.cache.serverSide.botCache.max > 0);
+}
+
+/**
+ * Return whether anonymous user server side caching is enabled in configuration.
+ */
+function anonymousCacheEnabled(): boolean {
+  // Caching is only enabled if SSR is enabled AND
+  // "max" pages to cache is greater than zero
+  return environment.universal.preboot && environment.cache.serverSide.anonymousCache.max && (environment.cache.serverSide.anonymousCache.max > 0);
+}
+
+/**
+ * Check if the currently requested page is in our server-side, in-memory cache.
+ * Caching is ONLY done for SSR requests. Pages are cached base on their path (e.g. /home or /search?query=test)
+ */
+function cacheCheck(req, res, next) {
+  // Cached copy of page (if found)
+  let cachedCopy;
+
+  // If the bot cache is enabled and this request looks like a bot, check the bot cache for a cached page.
+  if (botCacheEnabled() && isbot(req.get('user-agent'))) {
+    cachedCopy = checkCacheForRequest('bot', botCache, req, res);
+  } else if (anonymousCacheEnabled() && !isUserAuthenticated(req)) {
+    cachedCopy = checkCacheForRequest('anonymous', anonymousCache, req, res);
+  }
+
+  // If cached copy exists, return it to the user.
+  if (cachedCopy) {
+    res.locals.ssr = true;  // mark response as SSR-generated (enables text compression)
+    res.send(cachedCopy);
+
+    // Tell Express to skip all other handlers for this path
+    // This ensures we don't try to re-render the page since we've already returned the cached copy
+    next('router');
+  } else {
+    // If nothing found in cache, just continue with next handler
+    // (This should send the request on to the handler that rerenders the page via SSR
+    next();
+  }
+}
+
+/**
+ * Checks if the current request (i.e. page) is found in the given cache. If it is found,
+ * the cached copy is returned. When found, this method also triggers a re-render via
+ * SSR if the cached copy is now expired (i.e. timeToLive has passed for this cached copy).
+ * @param cacheName name of cache (just useful for debug logging)
+ * @param cache LRU cache to check
+ * @param req current request to look for in the cache
+ * @param res current response
+ * @returns cached copy (if found) or undefined (if not found)
+ */
+function checkCacheForRequest(cacheName: string, cache: LRU<string, any>, req, res): any {
+  // Get the cache key for this request
+  const key = getCacheKey(req);
+
+  // Check if this page is in our cache
+  let cachedCopy = cache.get(key);
+  if (cachedCopy) {
+    if (environment.cache.serverSide.debug) { console.log(`CACHE HIT FOR ${key} in ${cacheName} cache`); }
+
+    // Check if cached copy is expired (If expired, the key will now be gone from cache)
+    // NOTE: This will only occur when "allowStale=true", as it means the "get(key)" above returned a stale value.
+    if (!cache.has(key)) {
+      if (environment.cache.serverSide.debug) { console.log(`CACHE EXPIRED FOR ${key} in ${cacheName} cache. Re-rendering...`); }
+      // Update cached copy by rerendering server-side
+      // NOTE: In this scenario the currently cached copy will be returned to the current user.
+      // This re-render is peformed behind the scenes to update cached copy for next user.
+      serverSideRender(req, res, false);
+    }
+  } else {
+    if (environment.cache.serverSide.debug) { console.log(`CACHE MISS FOR ${key} in ${cacheName} cache.`); }
+  }
+
+  // return page from cache
+  return cachedCopy;
+}
+
+/**
+ * Create a cache key from the current request.
+ * The cache key is the URL path (NOTE: this key will also include any querystring params).
+ * E.g. "/home" or "/search?query=test"
+ * @param req current request
+ * @returns cache key to use for this page
+ */
+function getCacheKey(req): string {
+  // NOTE: this will return the URL path *without* any baseUrl
+  return req.url;
+}
+
+/**
+ * Save page to server side cache(s), if enabled. If caching is not enabled or a user is authenticated, this is a noop
+ * If multiple caches are enabled, the page will be saved to any caches where it does not yet exist (or is expired).
+ * (This minimizes the number of times we need to run SSR on the same page.)
+ * @param req current page request
+ * @param page page data to save to cache
+ */
+function saveToCache(req, page: any) {
+  // Only cache if no one is currently authenticated. This means ONLY public pages can be cached.
+  // NOTE: It's not safe to save page data to the cache when a user is authenticated. In that situation,
+  // the page may include sensitive or user-specific materials. As the cache is shared across all users, it can only contain public info.
+  if (!isUserAuthenticated(req)) {
+    const key = getCacheKey(req);
+    // Avoid caching "/reload/[random]" paths (these are hard refreshes after logout)
+    if (key.startsWith('/reload')) { return; }
+
+    // If bot cache is enabled, save it to that cache if it doesn't exist or is expired
+    // (NOTE: has() will return false if page is expired in cache)
+    if (botCacheEnabled() && !botCache.has(key)) {
+      botCache.set(key, page);
+      if (environment.cache.serverSide.debug) { console.log(`CACHE SAVE FOR ${key} in bot cache.`); }
+    }
+
+    // If anonymous cache is enabled, save it to that cache if it doesn't exist or is expired
+    if (anonymousCacheEnabled() && !anonymousCache.has(key)) {
+      anonymousCache.set(key, page);
+      if (environment.cache.serverSide.debug) { console.log(`CACHE SAVE FOR ${key} in anonymous cache.`); }
+    }
+  }
+}
+
+/**
+ * Whether a user is authenticated or not
+ */
+function isUserAuthenticated(req): boolean {
+  // Check whether our DSpace authentication Cookie exists or not
+  return req.cookies[TOKENITEM];
 }
 
 /*

src/app/admin/admin-routing.module.ts

@@ -47,6 +47,12 @@ import { BatchImportPageComponent } from './admin-import-batch-page/batch-import
         component: BatchImportPageComponent,
         data: { title: 'admin.batch-import.title', breadcrumbKey: 'admin.batch-import' }
       },
+      {
+        path: 'system-wide-alert',
+        resolve: { breadcrumb: I18nBreadcrumbResolver },
+        loadChildren: () => import('../system-wide-alert/system-wide-alert.module').then((m) => m.SystemWideAlertModule),
+        data: {title: 'admin.system-wide-alert.title', breadcrumbKey: 'admin.system-wide-alert'}
+      },
     ])
   ],
   providers: [

src/app/admin/admin-sidebar/admin-sidebar-section/admin-sidebar-section.component.html

@@ -1,7 +1,7 @@
 <div class="sidebar-section">
     <a class="nav-item nav-link d-flex flex-row flex-nowrap"
-       [ngClass]="{ disabled: !hasLink }"
-       [attr.aria-disabled]="!hasLink"
+       [ngClass]="{ disabled: isDisabled }"
+       [attr.aria-disabled]="isDisabled"
        [attr.aria-labelledby]="'sidebarName-' + section.id"
        [title]="('menu.section.icon.' + section.id) | translate"
        [routerLink]="itemModel.link"

src/app/admin/admin-sidebar/admin-sidebar-section/admin-sidebar-section.component.spec.ts

@@ -17,38 +17,86 @@ describe('AdminSidebarSectionComponent', () => {
   const menuService = new MenuServiceStub();
   const iconString = 'test';
 
-  beforeEach(waitForAsync(() => {
-    TestBed.configureTestingModule({
-      imports: [NoopAnimationsModule, RouterTestingModule, TranslateModule.forRoot()],
-      declarations: [AdminSidebarSectionComponent, TestComponent],
-      providers: [
-        { provide: 'sectionDataProvider', useValue: { model: { link: 'google.com' }, icon: iconString } },
-        { provide: MenuService, useValue: menuService },
-        { provide: CSSVariableService, useClass: CSSVariableServiceStub },
-      ]
-    }).overrideComponent(AdminSidebarSectionComponent, {
-      set: {
-        entryComponents: [TestComponent]
-      }
-    })
-      .compileComponents();
-  }));
+  describe('when not disabled', () => {
 
-  beforeEach(() => {
-    fixture = TestBed.createComponent(AdminSidebarSectionComponent);
-    component = fixture.componentInstance;
-    spyOn(component as any, 'getMenuItemComponent').and.returnValue(TestComponent);
-    fixture.detectChanges();
+    beforeEach(waitForAsync(() => {
+      TestBed.configureTestingModule({
+        imports: [NoopAnimationsModule, RouterTestingModule, TranslateModule.forRoot()],
+        declarations: [AdminSidebarSectionComponent, TestComponent],
+        providers: [
+          {provide: 'sectionDataProvider', useValue: {model: {link: 'google.com'}, icon: iconString}},
+          {provide: MenuService, useValue: menuService},
+          {provide: CSSVariableService, useClass: CSSVariableServiceStub},
+        ]
+      }).overrideComponent(AdminSidebarSectionComponent, {
+        set: {
+          entryComponents: [TestComponent]
+        }
+      })
+        .compileComponents();
+    }));
+
+    beforeEach(() => {
+      fixture = TestBed.createComponent(AdminSidebarSectionComponent);
+      component = fixture.componentInstance;
+      spyOn(component as any, 'getMenuItemComponent').and.returnValue(TestComponent);
+      fixture.detectChanges();
+    });
+
+    it('should create', () => {
+      expect(component).toBeTruthy();
+    });
+
+    it('should set the right icon', () => {
+      const icon = fixture.debugElement.query(By.css('.shortcut-icon')).query(By.css('i.fas'));
+      expect(icon.nativeElement.getAttribute('class')).toContain('fa-' + iconString);
+    });
+    it('should not contain the disabled class', () => {
+      const disabled = fixture.debugElement.query(By.css('.disabled'));
+      expect(disabled).toBeFalsy();
+    });
+
+  });
+  describe('when disabled', () => {
+
+    beforeEach(waitForAsync(() => {
+      TestBed.configureTestingModule({
+        imports: [NoopAnimationsModule, RouterTestingModule, TranslateModule.forRoot()],
+        declarations: [AdminSidebarSectionComponent, TestComponent],
+        providers: [
+          {provide: 'sectionDataProvider', useValue: {model: {link: 'google.com', disabled: true}, icon: iconString}},
+          {provide: MenuService, useValue: menuService},
+          {provide: CSSVariableService, useClass: CSSVariableServiceStub},
+        ]
+      }).overrideComponent(AdminSidebarSectionComponent, {
+        set: {
+          entryComponents: [TestComponent]
+        }
+      })
+        .compileComponents();
+    }));
+
+    beforeEach(() => {
+      fixture = TestBed.createComponent(AdminSidebarSectionComponent);
+      component = fixture.componentInstance;
+      spyOn(component as any, 'getMenuItemComponent').and.returnValue(TestComponent);
+      fixture.detectChanges();
+    });
+
+    it('should create', () => {
+      expect(component).toBeTruthy();
+    });
+
+    it('should set the right icon', () => {
+      const icon = fixture.debugElement.query(By.css('.shortcut-icon')).query(By.css('i.fas'));
+      expect(icon.nativeElement.getAttribute('class')).toContain('fa-' + iconString);
+    });
+    it('should contain the disabled class', () => {
+      const disabled = fixture.debugElement.query(By.css('.disabled'));
+      expect(disabled).toBeTruthy();
+    });
   });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
-  });
-
-  it('should set the right icon', () => {
-    const icon = fixture.debugElement.query(By.css('.shortcut-icon')).query(By.css('i.fas'));
-    expect(icon.nativeElement.getAttribute('class')).toContain('fa-' + iconString);
-  });
 });
 
 // declare a test component

src/app/admin/admin-sidebar/admin-sidebar-section/admin-sidebar-section.component.ts

@@ -5,7 +5,7 @@ import { rendersSectionForMenu } from '../../../shared/menu/menu-section.decorat
 import { LinkMenuItemModel } from '../../../shared/menu/menu-item/models/link.model';
 import { MenuSection } from '../../../shared/menu/menu-section.model';
 import { MenuID } from '../../../shared/menu/menu-id.model';
-import { isNotEmpty } from '../../../shared/empty.util';
+import { isEmpty } from '../../../shared/empty.util';
 import { Router } from '@angular/router';
 
 /**
@@ -26,7 +26,12 @@ export class AdminSidebarSectionComponent extends MenuSectionComponent implement
    */
   menuID: MenuID = MenuID.ADMIN;
   itemModel;
-  hasLink: boolean;
+
+  /**
+   * Boolean to indicate whether this section is disabled
+   */
+  isDisabled: boolean;
+
   constructor(
     @Inject('sectionDataProvider') menuSection: MenuSection,
     protected menuService: MenuService,
@@ -38,13 +43,13 @@ export class AdminSidebarSectionComponent extends MenuSectionComponent implement
   }
 
   ngOnInit(): void {
-    this.hasLink = isNotEmpty(this.itemModel?.link);
+    this.isDisabled = this.itemModel?.disabled || isEmpty(this.itemModel?.link);
     super.ngOnInit();
   }
 
   navigate(event: any): void {
     event.preventDefault();
-    if (this.hasLink) {
+    if (!this.isDisabled) {
       this.router.navigate(this.itemModel.link);
     }
   }

src/app/admin/admin-sidebar/expandable-admin-sidebar-section/expandable-admin-sidebar-section.component.html

@@ -7,6 +7,7 @@
      [attr.aria-labelledby]="'sidebarName-' + section.id"
      [attr.aria-expanded]="expanded | async"
      [title]="('menu.section.icon.' + section.id) | translate"
+       [class.disabled]="section.model?.disabled"
      (click)="toggleSection($event)"
      (keyup.space)="toggleSection($event)"
      (keyup.enter)="toggleSection($event)"

src/app/admin/admin-sidebar/expandable-admin-sidebar-section/expandable-admin-sidebar-section.component.spec.ts

@@ -23,7 +23,7 @@ describe('ExpandableAdminSidebarSectionComponent', () => {
       imports: [NoopAnimationsModule, TranslateModule.forRoot()],
       declarations: [ExpandableAdminSidebarSectionComponent, TestComponent],
       providers: [
-        { provide: 'sectionDataProvider', useValue: { icon: iconString } },
+        { provide: 'sectionDataProvider', useValue: { icon: iconString, model: {} } },
         { provide: MenuService, useValue: menuService },
         { provide: CSSVariableService, useClass: CSSVariableServiceStub },
         { provide: Router, useValue: new RouterStub() },

src/app/browse-by/browse-by-metadata-page/browse-by-metadata-page.component.html

@@ -1,7 +1,9 @@
 <div class="container">
     <ng-container *ngVar="(parent$ | async) as parent">
     <ng-container *ngIf="parent?.payload as parentContext">
-    <header class="comcol-header border-bottom mb-4 pb-4">
+        <div class="d-flex flex-row border-bottom mb-4 pb-4">
+
+            <header class="comcol-header mr-auto">
         <!-- Parent Name -->
         <ds-comcol-page-header [name]="parentContext.name">
         </ds-comcol-page-header>
@@ -22,6 +24,8 @@
         <ds-comcol-page-content [content]="parentContext.sidebarText" [hasInnerHtml]="true" [title]="'community.page.news'">
         </ds-comcol-page-content>
       </header>
+        <ds-dso-edit-menu></ds-dso-edit-menu>
+        </div>
       <!-- Browse-By Links -->
       <ds-themed-comcol-page-browse-by [id]="parentContext.id" [contentType]="parentContext.type"></ds-themed-comcol-page-browse-by>
       </ng-container></ng-container>

src/app/browse-by/browse-by-routing.module.ts

@@ -4,13 +4,17 @@ import { BrowseByGuard } from './browse-by-guard';
 import { BrowseByDSOBreadcrumbResolver } from './browse-by-dso-breadcrumb.resolver';
 import { BrowseByI18nBreadcrumbResolver } from './browse-by-i18n-breadcrumb.resolver';
 import { ThemedBrowseBySwitcherComponent } from './browse-by-switcher/themed-browse-by-switcher.component';
+import { DSOEditMenuResolver } from '../shared/dso-page/dso-edit-menu.resolver';
 
 @NgModule({
   imports: [
     RouterModule.forChild([
       {
         path: '',
-        resolve: { breadcrumb: BrowseByDSOBreadcrumbResolver },
+        resolve: {
+          breadcrumb: BrowseByDSOBreadcrumbResolver,
+          menu: DSOEditMenuResolver
+        },
         children: [
           {
             path: ':id',

src/app/browse-by/browse-by.module.ts

@@ -10,6 +10,7 @@ import { ThemedBrowseByMetadataPageComponent } from './browse-by-metadata-page/t
 import { ThemedBrowseByDatePageComponent } from './browse-by-date-page/themed-browse-by-date-page.component';
 import { ThemedBrowseByTitlePageComponent } from './browse-by-title-page/themed-browse-by-title-page.component';
 import { SharedBrowseByModule } from '../shared/browse-by/shared-browse-by.module';
+import { DsoPageModule } from '../shared/dso-page/dso-page.module';
 
 const ENTRY_COMPONENTS = [
   // put only entry components that use custom decorator
@@ -28,6 +29,7 @@ const ENTRY_COMPONENTS = [
     SharedBrowseByModule,
     CommonModule,
     ComcolModule,
+    DsoPageModule
   ],
   declarations: [
     BrowseBySwitcherComponent,

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

@@ -21,6 +21,7 @@ import { CollectionPageAdministratorGuard } from './collection-page-administrato
 import { LinkMenuItemModel } from '../shared/menu/menu-item/models/link.model';
 import { ThemedCollectionPageComponent } from './themed-collection-page.component';
 import { MenuItemType } from '../shared/menu/menu-item-type.model';
+import { DSOEditMenuResolver } from '../shared/dso-page/dso-edit-menu.resolver';
 
 @NgModule({
   imports: [
@@ -34,7 +35,8 @@ import { MenuItemType } from '../shared/menu/menu-item-type.model';
         path: ':id',
         resolve: {
           dso: CollectionPageResolver,
-          breadcrumb: CollectionBreadcrumbResolver
+          breadcrumb: CollectionBreadcrumbResolver,
+          menu: DSOEditMenuResolver
         },
         runGuardsAndResolvers: 'always',
         children: [
@@ -91,7 +93,7 @@ import { MenuItemType } from '../shared/menu/menu-item-type.model';
     DSOBreadcrumbsService,
     LinkService,
     CreateCollectionPageGuard,
-    CollectionPageAdministratorGuard
+    CollectionPageAdministratorGuard,
   ]
 })
 export class CollectionPageRoutingModule {

src/app/collection-page/collection-page.component.html

@@ -33,9 +33,7 @@
                           [title]="'collection.page.news'">
                   </ds-comcol-page-content>
                 </header>
-                <div class="pl-2 space-children-mr">
-                  <ds-dso-page-edit-button *ngIf="isCollectionAdmin$ | async"  [pageRoute]="collectionPageRoute$ | async" [dso]="collection" [tooltipMsg]="'collection.page.edit'"></ds-dso-page-edit-button>
-                </div>
+                  <ds-dso-edit-menu></ds-dso-edit-menu>
               </div>
               <section class="comcol-page-browse-section">
               <!-- Browse-By Links -->

src/app/collection-page/collection-page.module.ts

@@ -17,6 +17,7 @@ import { CollectionFormModule } from './collection-form/collection-form.module';
 import { ThemedCollectionPageComponent } from './themed-collection-page.component';
 import { ComcolModule } from '../shared/comcol/comcol.module';
 import { DsoSharedModule } from '../dso-shared/dso-shared.module';
+import { DsoPageModule } from '../shared/dso-page/dso-page.module';
 
 @NgModule({
   imports: [
@@ -28,6 +29,7 @@ import { DsoSharedModule } from '../dso-shared/dso-shared.module';
     CollectionFormModule,
     ComcolModule,
     DsoSharedModule,
+    DsoPageModule,
   ],
   declarations: [
     CollectionPageComponent,

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

@@ -14,6 +14,7 @@ import { CommunityPageAdministratorGuard } from './community-page-administrator.
 import { LinkMenuItemModel } from '../shared/menu/menu-item/models/link.model';
 import { ThemedCommunityPageComponent } from './themed-community-page.component';
 import { MenuItemType } from '../shared/menu/menu-item-type.model';
+import { DSOEditMenuResolver } from '../shared/dso-page/dso-edit-menu.resolver';
 
 @NgModule({
   imports: [
@@ -27,7 +28,8 @@ import { MenuItemType } from '../shared/menu/menu-item-type.model';
         path: ':id',
         resolve: {
           dso: CommunityPageResolver,
-          breadcrumb: CommunityBreadcrumbResolver
+          breadcrumb: CommunityBreadcrumbResolver,
+          menu: DSOEditMenuResolver
         },
         runGuardsAndResolvers: 'always',
         children: [
@@ -73,7 +75,7 @@ import { MenuItemType } from '../shared/menu/menu-item-type.model';
     DSOBreadcrumbsService,
     LinkService,
     CreateCommunityPageGuard,
-    CommunityPageAdministratorGuard
+    CommunityPageAdministratorGuard,
   ]
 })
 export class CommunityPageRoutingModule {

src/app/community-page/community-page.component.html

@@ -20,9 +20,7 @@
             [title]="'community.page.news'">
           </ds-comcol-page-content>
         </header>
-        <div class="pl-2 space-children-mr">
-          <ds-dso-page-edit-button *ngIf="isCommunityAdmin$ | async" [pageRoute]="communityPageRoute$ | async" [dso]="communityPayload" [tooltipMsg]="'community.page.edit'"></ds-dso-page-edit-button>
-        </div>
+        <ds-dso-edit-menu></ds-dso-edit-menu>
       </div>
       <section class="comcol-page-browse-section">
 

src/app/community-page/community-page.module.ts

@@ -19,6 +19,7 @@ import {
 import {
   ThemedCollectionPageSubCollectionListComponent
 } from './sub-collection-list/themed-community-page-sub-collection-list.component';
+import { DsoPageModule } from '../shared/dso-page/dso-page.module';
 
 const DECLARATIONS = [CommunityPageComponent,
   ThemedCommunityPageComponent,
@@ -37,6 +38,7 @@ const DECLARATIONS = [CommunityPageComponent,
     StatisticsModule.forRoot(),
     CommunityFormModule,
     ComcolModule,
+    DsoPageModule,
   ],
   declarations: [
     ...DECLARATIONS

src/app/core/auth/auth-request.service.spec.ts

@@ -11,6 +11,7 @@ import { HttpOptions } from '../dspace-rest/dspace-rest.service';
 import objectContaining = jasmine.objectContaining;
 import { AuthStatus } from './models/auth-status.model';
 import { RestRequestMethod } from '../data/rest-request-method';
+import { Observable, of as observableOf } from 'rxjs';
 
 describe(`AuthRequestService`, () => {
   let halService: HALEndpointService;
@@ -34,8 +35,8 @@ describe(`AuthRequestService`, () => {
       super(hes, rs, rdbs);
     }
 
-    protected createShortLivedTokenRequest(href: string): PostRequest {
-      return new PostRequest(this.requestService.generateRequestId(), href);
+    protected createShortLivedTokenRequest(href: string): Observable<PostRequest> {
+      return observableOf(new PostRequest(this.requestService.generateRequestId(), href));
     }
   }
 

src/app/core/auth/auth-request.service.ts

@@ -100,14 +100,12 @@ export abstract class AuthRequestService {
     );
   }
   /**
-   * Factory function to create the request object to send. This needs to be a POST client side and
-   * a GET server side. Due to CSRF validation, the server isn't allowed to send a POST, so we allow
-   * only the server IP to send a GET to this endpoint.
+   * Factory function to create the request object to send.
    *
    * @param href The href to send the request to
    * @protected
    */
-  protected abstract createShortLivedTokenRequest(href: string): GetRequest | PostRequest;
+  protected abstract createShortLivedTokenRequest(href: string): Observable<PostRequest>;
 
   /**
    * Send a request to retrieve a short-lived token which provides download access of restricted files
@@ -117,7 +115,7 @@ export abstract class AuthRequestService {
       filter((href: string) => isNotEmpty(href)),
       distinctUntilChanged(),
       map((href: string) => new URLCombiner(href, this.shortlivedtokensEndpoint).toString()),
-      map((endpointURL: string) => this.createShortLivedTokenRequest(endpointURL)),
+      switchMap((endpointURL: string) => this.createShortLivedTokenRequest(endpointURL)),
       tap((request: RestRequest) => this.requestService.send(request)),
       switchMap((request: RestRequest) => this.rdbService.buildFromRequestUUID<ShortLivedToken>(request.uuid)),
       getFirstCompletedRemoteData(),

src/app/core/auth/browser-auth-request.service.spec.ts

@@ -1,6 +1,8 @@
 import { AuthRequestService } from './auth-request.service';
 import { RequestService } from '../data/request.service';
 import { BrowserAuthRequestService } from './browser-auth-request.service';
+import { Observable } from 'rxjs';
+import { PostRequest } from '../data/request.models';
 
 describe(`BrowserAuthRequestService`, () => {
   let href: string;
@@ -16,14 +18,20 @@ describe(`BrowserAuthRequestService`, () => {
   });
 
   describe(`createShortLivedTokenRequest`, () => {
-    it(`should return a PostRequest`, () => {
-      const result = (service as any).createShortLivedTokenRequest(href);
-      expect(result.constructor.name).toBe('PostRequest');
+    it(`should return a PostRequest`, (done) => {
+      const obs = (service as any).createShortLivedTokenRequest(href) as Observable<PostRequest>;
+      obs.subscribe((result: PostRequest) => {
+        expect(result.constructor.name).toBe('PostRequest');
+        done();
+      });
     });
 
-    it(`should return a request with the given href`, () => {
-      const result = (service as any).createShortLivedTokenRequest(href);
-      expect(result.href).toBe(href) ;
+    it(`should return a request with the given href`, (done) => {
+      const obs = (service as any).createShortLivedTokenRequest(href) as Observable<PostRequest>;
+      obs.subscribe((result: PostRequest) => {
+        expect(result.href).toBe(href);
+        done();
+      });
     });
   });
 });

src/app/core/auth/browser-auth-request.service.ts

@@ -4,6 +4,7 @@ import { PostRequest } from '../data/request.models';
 import { HALEndpointService } from '../shared/hal-endpoint.service';
 import { RequestService } from '../data/request.service';
 import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
+import { Observable, of as observableOf } from 'rxjs';
 
 /**
  * Client side version of the service to send authentication requests
@@ -20,15 +21,13 @@ export class BrowserAuthRequestService extends AuthRequestService {
   }
 
   /**
-   * Factory function to create the request object to send. This needs to be a POST client side and
-   * a GET server side. Due to CSRF validation, the server isn't allowed to send a POST, so we allow
-   * only the server IP to send a GET to this endpoint.
+   * Factory function to create the request object to send.
    *
    * @param href The href to send the request to
    * @protected
    */
-  protected createShortLivedTokenRequest(href: string): PostRequest {
-    return new PostRequest(this.requestService.generateRequestId(), href);
+  protected createShortLivedTokenRequest(href: string): Observable<PostRequest> {
+    return observableOf(new PostRequest(this.requestService.generateRequestId(), href));
   }
 
 }

src/app/core/auth/server-auth-request.service.spec.ts

@@ -1,34 +1,68 @@
 import { AuthRequestService } from './auth-request.service';
 import { RequestService } from '../data/request.service';
 import { ServerAuthRequestService } from './server-auth-request.service';
+import { HttpClient, HttpHeaders, HttpResponse } from '@angular/common/http';
+import { Observable, of as observableOf } from 'rxjs';
+import { HALEndpointService } from '../shared/hal-endpoint.service';
+import { PostRequest } from '../data/request.models';
+import {
+  XSRF_REQUEST_HEADER,
+  XSRF_RESPONSE_HEADER
+} from '../xsrf/xsrf.interceptor';
 
 describe(`ServerAuthRequestService`, () => {
   let href: string;
   let requestService: RequestService;
   let service: AuthRequestService;
+  let httpClient: HttpClient;
+  let httpResponse: HttpResponse<any>;
+  let halService: HALEndpointService;
+  const mockToken = 'mock-token';
 
   beforeEach(() => {
     href = 'https://rest.api/auth/shortlivedtokens';
     requestService = jasmine.createSpyObj('requestService', {
       'generateRequestId': '8bb0582d-5013-4337-af9c-763beb25aae2'
     });
-    service = new ServerAuthRequestService(null, requestService, null);
+    let headers = new HttpHeaders();
+    headers = headers.set(XSRF_RESPONSE_HEADER, mockToken);
+    httpResponse = {
+      body: { bar: false },
+      headers: headers,
+      statusText: '200'
+    } as HttpResponse<any>;
+    httpClient = jasmine.createSpyObj('httpClient', {
+      get: observableOf(httpResponse),
+    });
+    halService = jasmine.createSpyObj('halService', {
+      'getRootHref': '/api'
+    });
+    service = new ServerAuthRequestService(halService, requestService, null, httpClient);
   });
 
   describe(`createShortLivedTokenRequest`, () => {
-    it(`should return a GetRequest`, () => {
-      const result = (service as any).createShortLivedTokenRequest(href);
-      expect(result.constructor.name).toBe('GetRequest');
+    it(`should return a PostRequest`, (done) => {
+      const obs = (service as any).createShortLivedTokenRequest(href) as Observable<PostRequest>;
+      obs.subscribe((result: PostRequest) => {
+        expect(result.constructor.name).toBe('PostRequest');
+        done();
+      });
     });
 
-    it(`should return a request with the given href`, () => {
-      const result = (service as any).createShortLivedTokenRequest(href);
-      expect(result.href).toBe(href) ;
+    it(`should return a request with the given href`, (done) => {
+      const obs = (service as any).createShortLivedTokenRequest(href) as Observable<PostRequest>;
+      obs.subscribe((result: PostRequest) => {
+        expect(result.href).toBe(href);
+        done();
+      });
     });
 
-    it(`should have a responseMsToLive of 2 seconds`, () => {
-      const result = (service as any).createShortLivedTokenRequest(href);
-      expect(result.responseMsToLive).toBe(2 * 1000) ;
+    it(`should return a request with a xsrf header`, (done) => {
+      const obs = (service as any).createShortLivedTokenRequest(href) as Observable<PostRequest>;
+      obs.subscribe((result: PostRequest) => {
+        expect(result.options.headers.get(XSRF_REQUEST_HEADER)).toBe(mockToken);
+        done();
+      });
     });
   });
 });

src/app/core/auth/server-auth-request.service.ts

@@ -1,9 +1,21 @@
 import { Injectable } from '@angular/core';
 import { AuthRequestService } from './auth-request.service';
-import { GetRequest } from '../data/request.models';
+import { PostRequest } from '../data/request.models';
 import { HALEndpointService } from '../shared/hal-endpoint.service';
 import { RequestService } from '../data/request.service';
 import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
+import {
+  HttpHeaders,
+  HttpClient,
+  HttpResponse
+} from '@angular/common/http';
+import {
+  XSRF_REQUEST_HEADER,
+  XSRF_RESPONSE_HEADER,
+  DSPACE_XSRF_COOKIE
+} from '../xsrf/xsrf.interceptor';
+import { map } from 'rxjs/operators';
+import { Observable } from 'rxjs';
 
 /**
  * Server side version of the service to send authentication requests
@@ -14,23 +26,42 @@ export class ServerAuthRequestService extends AuthRequestService {
   constructor(
     halService: HALEndpointService,
     requestService: RequestService,
-    rdbService: RemoteDataBuildService
+    rdbService: RemoteDataBuildService,
+    protected httpClient: HttpClient,
   ) {
     super(halService, requestService, rdbService);
   }
 
   /**
-   * Factory function to create the request object to send. This needs to be a POST client side and
-   * a GET server side. Due to CSRF validation, the server isn't allowed to send a POST, so we allow
-   * only the server IP to send a GET to this endpoint.
+   * Factory function to create the request object to send.
    *
    * @param href The href to send the request to
    * @protected
    */
-  protected createShortLivedTokenRequest(href: string): GetRequest {
-    return Object.assign(new GetRequest(this.requestService.generateRequestId(), href), {
-      responseMsToLive: 2 * 1000 // A short lived token is only valid for 2 seconds.
-    });
+  protected createShortLivedTokenRequest(href: string): Observable<PostRequest> {
+    // First do a call to the root endpoint in order to get an XSRF token
+    return this.httpClient.get(this.halService.getRootHref(), { observe: 'response' }).pipe(
+      // retrieve the XSRF token from the response header
+      map((response: HttpResponse<any>) => response.headers.get(XSRF_RESPONSE_HEADER)),
+      // Use that token to create an HttpHeaders object
+      map((xsrfToken: string) => new HttpHeaders()
+          .set('Content-Type', 'application/json; charset=utf-8')
+          // set the token as the XSRF header
+          .set(XSRF_REQUEST_HEADER, xsrfToken)
+          // and as the DSPACE-XSRF-COOKIE
+          .set('Cookie', `${DSPACE_XSRF_COOKIE}=${xsrfToken}`)),
+      map((headers: HttpHeaders) =>
+        // Create a new PostRequest using those headers and the given href
+        new PostRequest(
+          this.requestService.generateRequestId(),
+          href,
+          {},
+          {
+            headers: headers,
+          },
+        )
+      )
+    );
   }
 
 }

src/app/core/browse/browse-definition-data.service.spec.ts

@@ -2,27 +2,66 @@ import { BrowseDefinitionDataService } from './browse-definition-data.service';
 import { followLink } from '../../shared/utils/follow-link-config.model';
 import { EMPTY } from 'rxjs';
 import { FindListOptions } from '../data/find-list-options.model';
+import { getMockRemoteDataBuildService } from '../../shared/mocks/remote-data-build.service.mock';
+import { RequestService } from '../data/request.service';
+import { HALEndpointServiceStub } from '../../shared/testing/hal-endpoint-service.stub';
+import { getMockObjectCacheService } from '../../shared/mocks/object-cache.service.mock';
 
 describe(`BrowseDefinitionDataService`, () => {
+  let requestService: RequestService;
   let service: BrowseDefinitionDataService;
-  const findAllDataSpy = jasmine.createSpyObj('findAllData', {
-    findAll: EMPTY,
-  });
+  let findAllDataSpy;
+  let searchDataSpy;
+  const browsesEndpointURL = 'https://rest.api/browses';
+  const halService: any = new HALEndpointServiceStub(browsesEndpointURL);
+
   const options = new FindListOptions();
   const linksToFollow = [
     followLink('entries'),
     followLink('items')
   ];
 
+  function initTestService() {
+    return new BrowseDefinitionDataService(
+      requestService,
+      getMockRemoteDataBuildService(),
+      getMockObjectCacheService(),
+      halService,
+    );
+  }
+
   beforeEach(() => {
-    service = new BrowseDefinitionDataService(null, null, null, null);
+    service = initTestService();
+    findAllDataSpy = jasmine.createSpyObj('findAllData', {
+      findAll: EMPTY,
+    });
+    searchDataSpy = jasmine.createSpyObj('searchData', {
+      searchBy: EMPTY,
+      getSearchByHref: EMPTY,
+    });
     (service as any).findAllData = findAllDataSpy;
+    (service as any).searchData = searchDataSpy;
   });
 
+  describe('findByFields', () => {
+    it(`should call searchByHref on searchData`, () => {
+      service.findByFields(['test'], true, false, ...linksToFollow);
+      expect(searchDataSpy.getSearchByHref).toHaveBeenCalled();
+    });
+  });
+  describe('searchBy', () => {
+    it(`should call searchBy on searchData`, () => {
+      service.searchBy('test', options, true, false, ...linksToFollow);
+      expect(searchDataSpy.searchBy).toHaveBeenCalledWith('test', options, true, false, ...linksToFollow);
+    });
+  });
   describe(`findAll`, () => {
     it(`should call findAll on findAllData`, () => {
       service.findAll(options, true, false, ...linksToFollow);
       expect(findAllDataSpy.findAll).toHaveBeenCalledWith(options, true, false, ...linksToFollow);
     });
   });
+
+
+
 });

src/app/core/browse/browse-definition-data.service.ts

@@ -13,6 +13,8 @@ import { FindListOptions } from '../data/find-list-options.model';
 import { IdentifiableDataService } from '../data/base/identifiable-data.service';
 import { FindAllData, FindAllDataImpl } from '../data/base/find-all-data';
 import { dataService } from '../data/base/data-service.decorator';
+import { RequestParam } from '../cache/models/request-param.model';
+import { SearchData, SearchDataImpl } from '../data/base/search-data';
 
 /**
  * Data service responsible for retrieving browse definitions from the REST server
@@ -21,8 +23,9 @@ import { dataService } from '../data/base/data-service.decorator';
   providedIn: 'root',
 })
 @dataService(BROWSE_DEFINITION)
-export class BrowseDefinitionDataService extends IdentifiableDataService<BrowseDefinition> implements FindAllData<BrowseDefinition> {
+export class BrowseDefinitionDataService extends IdentifiableDataService<BrowseDefinition> implements FindAllData<BrowseDefinition>, SearchData<BrowseDefinition> {
   private findAllData: FindAllDataImpl<BrowseDefinition>;
+  private searchData: SearchDataImpl<BrowseDefinition>;
 
   constructor(
     protected requestService: RequestService,
@@ -31,7 +34,7 @@ export class BrowseDefinitionDataService extends IdentifiableDataService<BrowseD
     protected halService: HALEndpointService,
   ) {
     super('browses', requestService, rdbService, objectCache, halService);
-
+    this.searchData = new SearchDataImpl(this.linkPath, requestService, rdbService, objectCache, halService, this.responseMsToLive);
     this.findAllData = new FindAllDataImpl(this.linkPath, requestService, rdbService, objectCache, halService, this.responseMsToLive);
   }
 
@@ -52,5 +55,71 @@ export class BrowseDefinitionDataService extends IdentifiableDataService<BrowseD
   findAll(options: FindListOptions = {}, useCachedVersionIfAvailable = true, reRequestOnStale = true, ...linksToFollow: FollowLinkConfig<BrowseDefinition>[]): Observable<RemoteData<PaginatedList<BrowseDefinition>>> {
     return this.findAllData.findAll(options, useCachedVersionIfAvailable, reRequestOnStale, ...linksToFollow);
   }
+
+  /**
+   * Make a new FindListRequest with given search method
+   *
+   * @param searchMethod                The search method for the object
+   * @param options                     The [[FindListOptions]] object
+   * @param useCachedVersionIfAvailable If this is true, the request will only be sent if there's
+   *                                    no valid cached version. Defaults to true
+   * @param reRequestOnStale            Whether or not the request should automatically be re-
+   *                                    requested after the response becomes stale
+   * @param linksToFollow               List of {@link FollowLinkConfig} that indicate which
+   *                                    {@link HALLink}s should be automatically resolved
+   * @return {Observable<RemoteData<PaginatedList<T>>}
+   *    Return an observable that emits response from the server
+   */
+  public searchBy(searchMethod: string, options?: FindListOptions, useCachedVersionIfAvailable?: boolean, reRequestOnStale?: boolean, ...linksToFollow: FollowLinkConfig<BrowseDefinition>[]): Observable<RemoteData<PaginatedList<BrowseDefinition>>> {
+    return this.searchData.searchBy(searchMethod, options, useCachedVersionIfAvailable, reRequestOnStale, ...linksToFollow);
+  }
+
+  /**
+   * Create the HREF for a specific object's search method with given options object
+   *
+   * @param searchMethod The search method for the object
+   * @param options The [[FindListOptions]] object
+   * @return {Observable<string>}
+   *    Return an observable that emits created HREF
+   * @param linksToFollow   List of {@link FollowLinkConfig} that indicate which {@link HALLink}s should be automatically resolved
+   */
+  public getSearchByHref(searchMethod: string, options?: FindListOptions, ...linksToFollow: FollowLinkConfig<BrowseDefinition>[]): Observable<string> {
+    return this.searchData.getSearchByHref(searchMethod, options, ...linksToFollow);
+  }
+
+  /**
+   * Get the browse URL by providing a list of metadata keys. The first matching browse index definition
+   * for any of the fields is returned. This is used in eg. item page field component, which can be configured
+   * with several fields for a component like 'Author', and needs to know if and how to link the values
+   * to configured browse indices.
+   *
+   * @param fields  an array of field strings, eg. ['dc.contributor.author', 'dc.creator']
+   * @param useCachedVersionIfAvailable Override the data service useCachedVersionIfAvailable parameter (default: true)
+   * @param reRequestOnStale Override the data service reRequestOnStale parameter (default: true)
+   * @param linksToFollow Override the data service linksToFollow parameter (default: empty array)
+   */
+  findByFields(
+    fields: string[],
+    useCachedVersionIfAvailable = true,
+    reRequestOnStale = true,
+    ...linksToFollow: FollowLinkConfig<BrowseDefinition>[]
+  ): Observable<RemoteData<BrowseDefinition>> {
+    const searchParams = [];
+    searchParams.push(new RequestParam('fields', fields));
+
+    const hrefObs = this.getSearchByHref(
+      'byFields',
+      { searchParams },
+      ...linksToFollow
+    );
+
+    return this.findByHref(
+      hrefObs,
+      useCachedVersionIfAvailable,
+      reRequestOnStale,
+      ...linksToFollow,
+    );
+  }
+
 }
 

src/app/core/browse/browse.service.ts

@@ -19,9 +19,9 @@ import {
 } from '../shared/operators';
 import { URLCombiner } from '../url-combiner/url-combiner';
 import { BrowseEntrySearchOptions } from './browse-entry-search-options.model';
-import { BrowseDefinitionDataService } from './browse-definition-data.service';
 import { HrefOnlyDataService } from '../data/href-only-data.service';
 import { followLink, FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { BrowseDefinitionDataService } from './browse-definition-data.service';
 
 
 export const BROWSE_LINKS_TO_FOLLOW: FollowLinkConfig<BrowseEntry | Item>[] = [
@@ -35,7 +35,7 @@ export const BROWSE_LINKS_TO_FOLLOW: FollowLinkConfig<BrowseEntry | Item>[] = [
 export class BrowseService {
   protected linkPath = 'browses';
 
-  private static toSearchKeyArray(metadataKey: string): string[] {
+  public static toSearchKeyArray(metadataKey: string): string[] {
     const keyParts = metadataKey.split('.');
     const searchFor = [];
     searchFor.push('*');

src/app/core/core.effects.ts

@@ -7,7 +7,6 @@ import { ServerSyncBufferEffects } from './cache/server-sync-buffer.effects';
 import { ObjectUpdatesEffects } from './data/object-updates/object-updates.effects';
 import { RouteEffects } from './services/route.effects';
 import { RouterEffects } from './router/router.effects';
-import { MenuEffects } from '../shared/menu/menu.effects';
 
 export const coreEffects = [
   RequestEffects,
@@ -19,5 +18,4 @@ export const coreEffects = [
   ObjectUpdatesEffects,
   RouteEffects,
   RouterEffects,
-  MenuEffects
 ];

src/app/core/core.module.ts

@@ -170,6 +170,7 @@ import { OrcidHistory } from './orcid/model/orcid-history.model';
 import { OrcidAuthService } from './orcid/orcid-auth.service';
 import { VocabularyDataService } from './submission/vocabularies/vocabulary.data.service';
 import { VocabularyEntryDetailsDataService } from './submission/vocabularies/vocabulary-entry-details.data.service';
+import { IdentifierData } from '../shared/object-list/identifier-data/identifier-data.model';
 import { SupervisionOrderDataService } from './supervision-order/supervision-order-data.service';
 
 /**
@@ -358,7 +359,8 @@ export const models =
     ResearcherProfile,
     OrcidQueue,
     OrcidHistory,
-    AccessStatusObject
+    AccessStatusObject,
+    IdentifierData,
   ];
 
 @NgModule({

src/app/core/data/eperson-registration.service.ts

@@ -14,6 +14,7 @@ import { RemoteData } from './remote-data';
 import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
 import { HttpOptions } from '../dspace-rest/dspace-rest.service';
 import { HttpHeaders } from '@angular/common/http';
+import { HttpParams } from '@angular/common/http';
 
 @Injectable({
   providedIn: 'root',
@@ -55,7 +56,7 @@ export class EpersonRegistrationService {
    * @param email
    * @param captchaToken the value of x-recaptcha-token header
    */
-  registerEmail(email: string, captchaToken: string = null): Observable<RemoteData<Registration>> {
+  registerEmail(email: string, captchaToken: string = null, type?: string): Observable<RemoteData<Registration>> {
     const registration = new Registration();
     registration.email = email;
 
@@ -70,6 +71,11 @@ export class EpersonRegistrationService {
     }
     options.headers = headers;
 
+    if (hasValue(type)) {
+      options.params = type ?
+        new HttpParams({ fromString: 'accountRequestType=' + type }) : new HttpParams();
+    }
+
     href$.pipe(
       find((href: string) => hasValue(href)),
       map((href: string) => {

src/app/core/data/feature-authorization/feature-id.ts

@@ -32,4 +32,5 @@ export enum FeatureID {
   CanSynchronizeWithORCID = 'canSynchronizeWithORCID',
   CanSubmit = 'canSubmit',
   CanEditItem = 'canEditItem',
+  CanRegisterDOI = 'canRegisterDOI',
 }

src/app/core/data/identifier-data.service.ts

@@ -0,0 +1,85 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Store } from '@ngrx/store';
+import { NotificationsService } from '../../shared/notifications/notifications.service';
+import { dataService } from './base/data-service.decorator';
+import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
+import { ObjectCacheService } from '../cache/object-cache.service';
+import { HALEndpointService } from '../shared/hal-endpoint.service';
+import { BaseDataService } from './base/base-data.service';
+import { RequestService } from './request.service';
+import { DefaultChangeAnalyzer } from './default-change-analyzer.service';
+import { CoreState } from '../core-state.model';
+import { Observable } from 'rxjs';
+import { RemoteData } from './remote-data';
+import { Item } from '../shared/item.model';
+import { IDENTIFIERS } from '../../shared/object-list/identifier-data/identifier-data.resource-type';
+import { IdentifierData } from '../../shared/object-list/identifier-data/identifier-data.model';
+import { getFirstCompletedRemoteData } from '../shared/operators';
+import { map, switchMap } from 'rxjs/operators';
+import {ConfigurationProperty} from '../shared/configuration-property.model';
+import {ConfigurationDataService} from './configuration-data.service';
+import { HttpOptions } from '../dspace-rest/dspace-rest.service';
+import { PostRequest } from './request.models';
+import { sendRequest } from '../shared/request.operators';
+import { RestRequest } from './rest-request.model';
+
+/**
+ * The service handling all REST requests to get item identifiers like handles and DOIs
+ * from the /identifiers endpoint, as well as the backend configuration that controls whether a 'Register DOI'
+ * button appears for admins in the item status page
+ */
+@Injectable()
+@dataService(IDENTIFIERS)
+export class IdentifierDataService extends BaseDataService<IdentifierData> {
+
+  constructor(
+    protected comparator: DefaultChangeAnalyzer<IdentifierData>,
+    protected halService: HALEndpointService,
+    protected http: HttpClient,
+    protected notificationsService: NotificationsService,
+    protected objectCache: ObjectCacheService,
+    protected rdbService: RemoteDataBuildService,
+    protected requestService: RequestService,
+    protected store: Store<CoreState>,
+    private configurationService: ConfigurationDataService,
+  ) {
+    super('identifiers', requestService, rdbService, objectCache, halService);
+  }
+
+  /**
+   * Returns {@link RemoteData} of {@link IdentifierData} representing identifiers for this item
+   * @param item  Item we are querying
+   */
+  getIdentifierDataFor(item: Item): Observable<RemoteData<IdentifierData>> {
+    return this.findByHref(item._links.identifiers.href, false, true);
+  }
+
+  /**
+   * Should we allow registration of new DOIs via the item status page?
+   */
+  public getIdentifierRegistrationConfiguration(): Observable<string[]> {
+    return this.configurationService.findByPropertyName('identifiers.item-status.register-doi').pipe(
+      getFirstCompletedRemoteData(),
+      map((propertyRD: RemoteData<ConfigurationProperty>) => propertyRD.hasSucceeded ? propertyRD.payload.values : [])
+    );
+  }
+
+  public registerIdentifier(item: Item, type: string): Observable<RemoteData<any>> {
+    const requestId = this.requestService.generateRequestId();
+    return this.getEndpoint().pipe(
+      map((endpointURL: string) => {
+        const options: HttpOptions = Object.create({});
+        let headers = new HttpHeaders();
+        headers = headers.append('Content-Type', 'text/uri-list');
+        options.headers = headers;
+        let params = new HttpParams();
+        params = params.append('type', type);
+        options.params = params;
+        return new PostRequest(requestId, endpointURL, item._links.self.href, options);
+      }),
+      sendRequest(this.requestService),
+      switchMap((request: RestRequest) => this.rdbService.buildFromRequestUUID(request.uuid) as Observable<RemoteData<any>>)
+    );
+  }
+}

src/app/core/data/item-data.service.ts

@@ -232,6 +232,16 @@ export abstract class BaseItemDataService extends IdentifiableDataService<Item>
     return this.rdbService.buildFromRequestUUID(requestId);
   }
 
+  /**
+   * Get the endpoint for an item's identifiers
+   * @param itemId
+   */
+  public getIdentifiersEndpoint(itemId: string): Observable<string> {
+    return this.halService.getEndpoint(this.linkPath).pipe(
+      switchMap((url: string) => this.halService.getEndpoint('identifiers', `${url}/${itemId}`))
+    );
+  }
+
   /**
    * Get the endpoint to move the item
    * @param itemId

src/app/core/data/system-wide-alert-data.service.spec.ts

@@ -0,0 +1,13 @@
+import { SystemWideAlertDataService } from './system-wide-alert-data.service';
+import { testFindAllDataImplementation } from './base/find-all-data.spec';
+import { testPutDataImplementation } from './base/put-data.spec';
+import { testCreateDataImplementation } from './base/create-data.spec';
+
+describe('SystemWideAlertDataService', () => {
+  describe('composition', () => {
+    const initService = () => new SystemWideAlertDataService(null, null, null, null, null);
+    testFindAllDataImplementation(initService);
+    testPutDataImplementation(initService);
+    testCreateDataImplementation(initService);
+  });
+});

src/app/core/data/system-wide-alert-data.service.ts

@@ -0,0 +1,104 @@
+import { Injectable } from '@angular/core';
+import { RequestService } from './request.service';
+import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
+import { ObjectCacheService } from '../cache/object-cache.service';
+import { HALEndpointService } from '../shared/hal-endpoint.service';
+import { Observable } from 'rxjs';
+import { PaginatedList } from './paginated-list.model';
+import { RemoteData } from './remote-data';
+import { IdentifiableDataService } from './base/identifiable-data.service';
+import { FollowLinkConfig } from '../../shared/utils/follow-link-config.model';
+import { FindAllData, FindAllDataImpl } from './base/find-all-data';
+import { FindListOptions } from './find-list-options.model';
+import { dataService } from './base/data-service.decorator';
+import { NotificationsService } from '../../shared/notifications/notifications.service';
+import { CreateData, CreateDataImpl } from './base/create-data';
+import { SYSTEMWIDEALERT } from '../../system-wide-alert/system-wide-alert.resource-type';
+import { SystemWideAlert } from '../../system-wide-alert/system-wide-alert.model';
+import { PutData, PutDataImpl } from './base/put-data';
+import { RequestParam } from '../cache/models/request-param.model';
+import { SearchData, SearchDataImpl } from './base/search-data';
+
+/**
+ * Dataservice representing a system-wide alert
+ */
+@Injectable()
+@dataService(SYSTEMWIDEALERT)
+export class SystemWideAlertDataService extends IdentifiableDataService<SystemWideAlert> implements FindAllData<SystemWideAlert>, CreateData<SystemWideAlert>, PutData<SystemWideAlert>, SearchData<SystemWideAlert> {
+  private findAllData: FindAllDataImpl<SystemWideAlert>;
+  private createData: CreateDataImpl<SystemWideAlert>;
+  private putData: PutDataImpl<SystemWideAlert>;
+  private searchData: SearchData<SystemWideAlert>;
+
+  constructor(
+    protected requestService: RequestService,
+    protected rdbService: RemoteDataBuildService,
+    protected objectCache: ObjectCacheService,
+    protected halService: HALEndpointService,
+    protected notificationsService: NotificationsService,
+  ) {
+    super('systemwidealerts', requestService, rdbService, objectCache, halService);
+
+    this.findAllData = new FindAllDataImpl(this.linkPath, requestService, rdbService, objectCache, halService, this.responseMsToLive);
+    this.createData = new CreateDataImpl(this.linkPath, requestService, rdbService, objectCache, halService, notificationsService, this.responseMsToLive);
+    this.putData = new PutDataImpl(this.linkPath, requestService, rdbService, objectCache, halService, this.responseMsToLive);
+    this.searchData = new SearchDataImpl(this.linkPath, requestService, rdbService, objectCache, halService, this.responseMsToLive);
+  }
+
+  /**
+   * Returns {@link RemoteData} of all object with a list of {@link FollowLinkConfig}, to indicate which embedded
+   * info should be added to the objects
+   *
+   * @param options                     Find list options object
+   * @param useCachedVersionIfAvailable If this is true, the request will only be sent if there's
+   *                                    no valid cached version. Defaults to true
+   * @param reRequestOnStale            Whether or not the request should automatically be re-
+   *                                    requested after the response becomes stale
+   * @param linksToFollow               List of {@link FollowLinkConfig} that indicate which
+   *                                    {@link HALLink}s should be automatically resolved
+   * @return {Observable<RemoteData<PaginatedList<T>>>}
+   *    Return an observable that emits object list
+   */
+  findAll(options?: FindListOptions, useCachedVersionIfAvailable?: boolean, reRequestOnStale?: boolean, ...linksToFollow: FollowLinkConfig<SystemWideAlert>[]): Observable<RemoteData<PaginatedList<SystemWideAlert>>> {
+    return this.findAllData.findAll(options, useCachedVersionIfAvailable, reRequestOnStale, ...linksToFollow);
+  }
+
+  /**
+   * Create a new object on the server, and store the response in the object cache
+   *
+   * @param object    The object to create
+   * @param params    Array with additional params to combine with query string
+   */
+  create(object: SystemWideAlert, ...params: RequestParam[]): Observable<RemoteData<SystemWideAlert>> {
+    return this.createData.create(object, ...params);
+  }
+
+  /**
+   * Send a PUT request for the specified object
+   *
+   * @param object The object to send a put request for.
+   */
+  put(object: SystemWideAlert): Observable<RemoteData<SystemWideAlert>> {
+    return this.putData.put(object);
+  }
+
+  /**
+   * Make a new FindListRequest with given search method
+   *
+   * @param searchMethod                The search method for the object
+   * @param options                     The [[FindListOptions]] object
+   * @param useCachedVersionIfAvailable If this is true, the request will only be sent if there's
+   *                                    no valid cached version. Defaults to true
+   * @param reRequestOnStale            Whether or not the request should automatically be re-
+   *                                    requested after the response becomes stale
+   * @param linksToFollow               List of {@link FollowLinkConfig} that indicate which
+   *                                    {@link HALLink}s should be automatically resolved
+   * @return {Observable<RemoteData<PaginatedList<T>>}
+   *    Return an observable that emits response from the server
+   */
+  searchBy(searchMethod: string, options?: FindListOptions, useCachedVersionIfAvailable?: boolean, reRequestOnStale?: boolean, ...linksToFollow: FollowLinkConfig<SystemWideAlert>[]): Observable<RemoteData<PaginatedList<SystemWideAlert>>> {
+    return this.searchData.searchBy(searchMethod, options, useCachedVersionIfAvailable, reRequestOnStale, ...linksToFollow);
+  }
+
+
+}

src/app/core/profile/researcher-profile-data.service.ts

@@ -3,8 +3,8 @@ import { Injectable } from '@angular/core';
 import { Router } from '@angular/router';
 
 import { Operation, ReplaceOperation } from 'fast-json-patch';
-import { Observable } from 'rxjs';
-import { find, map } from 'rxjs/operators';
+import { Observable, of as observableOf } from 'rxjs';
+import { find, map, mergeMap } from 'rxjs/operators';
 import { NotificationsService } from '../../shared/notifications/notifications.service';
 import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
 import { ObjectCacheService } from '../cache/object-cache.service';
@@ -130,6 +130,24 @@ export class ResearcherProfileDataService extends IdentifiableDataService<Resear
     return this.rdbService.buildFromRequestUUID(requestId, followLink('item'));
   }
 
+  /**
+   * Creates a researcher profile starting from an external source URI and returns the related item's ID
+   * Emits null if the researcher profile doesn't exist after sending out the request
+   * @param sourceUri
+   */
+  createFromExternalSourceAndReturnRelatedItemId(sourceUri: string): Observable<string> {
+    return this.createFromExternalSource(sourceUri).pipe(
+      getFirstCompletedRemoteData(),
+      mergeMap((rd: RemoteData<ResearcherProfile>) => {
+        if (rd.hasSucceeded) {
+          return this.findRelatedItemId(rd.payload);
+        } else {
+          return observableOf(null);
+        }
+      }),
+    );
+  }
+
 
   /**
    * Create a new object on the server, and store the response in the object cache

src/app/core/services/server-xhr.service.ts

@@ -0,0 +1,16 @@
+import { XhrFactory } from '@angular/common';
+import { Injectable } from '@angular/core';
+import { prototype, XMLHttpRequest } from 'xhr2';
+
+/**
+ * Overrides the default XhrFactory server side, to allow us to set cookies in requests to the
+ * backend. This was added to be able to perform a working XSRF request from the node server, as it
+ * needs to set a cookie for the XSRF token
+ */
+@Injectable()
+export class ServerXhrService implements XhrFactory {
+  build(): XMLHttpRequest {
+    prototype._restrictedHeaders.cookie = false;
+    return new XMLHttpRequest();
+  }
+}

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

@@ -24,6 +24,8 @@ import { Bitstream } from './bitstream.model';
 import { ACCESS_STATUS } from 'src/app/shared/object-list/access-status-badge/access-status.resource-type';
 import { AccessStatusObject } from 'src/app/shared/object-list/access-status-badge/access-status.model';
 import { HandleObject } from './handle-object.model';
+import { IDENTIFIERS } from '../../shared/object-list/identifier-data/identifier-data.resource-type';
+import { IdentifierData } from '../../shared/object-list/identifier-data/identifier-data.model';
 
 /**
  * Class representing a DSpace Item
@@ -76,6 +78,7 @@ export class Item extends DSpaceObject implements ChildHALResource, HandleObject
     version: HALLink;
     thumbnail: HALLink;
     accessStatus: HALLink;
+    identifiers: HALLink;
     self: HALLink;
   };
 
@@ -121,6 +124,13 @@ export class Item extends DSpaceObject implements ChildHALResource, HandleObject
    @link(ACCESS_STATUS)
    accessStatus?: Observable<RemoteData<AccessStatusObject>>;
 
+  /**
+   * The identifier data for this Item
+   * Will be undefined unless the identifiers {@link HALLink} has been resolved.
+   */
+  @link(IDENTIFIERS, false, 'identifiers')
+  identifiers?: Observable<RemoteData<IdentifierData>>;
+
   /**
    * Method that returns as which type of object this object should be rendered
    */

src/app/core/shared/metadata-representation/metadata-representation.model.ts

@@ -1,11 +1,14 @@
 /**
  * An Enum defining the representation type of metadata
  */
+import { BrowseDefinition } from '../browse-definition.model';
+
 export enum MetadataRepresentationType {
   None = 'none',
   Item = 'item',
   AuthorityControlled = 'authority_controlled',
-  PlainText = 'plain_text'
+  PlainText = 'plain_text',
+  BrowseLink = 'browse_link'
 }
 
 /**
@@ -24,8 +27,14 @@ export interface MetadataRepresentation {
    */
   representationType: MetadataRepresentationType;
 
+  /**
+   * The browse definition (optional)
+   */
+  browseDefinition?: BrowseDefinition;
+
   /**
    * Fetches the value to be displayed
    */
   getValue(): string;
+
 }

src/app/core/shared/metadata-representation/metadatum/metadatum-representation.model.ts

@@ -1,6 +1,7 @@
 import { MetadataRepresentation, MetadataRepresentationType } from '../metadata-representation.model';
 import { hasValue } from '../../../../shared/empty.util';
 import { MetadataValue } from '../../metadata.models';
+import { BrowseDefinition } from '../../browse-definition.model';
 
 /**
  * This class defines the way the metadatum it extends should be represented
@@ -12,9 +13,15 @@ export class MetadatumRepresentation extends MetadataValue implements MetadataRe
    */
   itemType: string;
 
-  constructor(itemType: string) {
+  /**
+   * The browse definition ID passed in with the metadatum, if any
+   */
+  browseDefinition?: BrowseDefinition;
+
+  constructor(itemType: string, browseDefinition?: BrowseDefinition) {
     super();
     this.itemType = itemType;
+    this.browseDefinition = browseDefinition;
   }
 
   /**
@@ -23,6 +30,8 @@ export class MetadatumRepresentation extends MetadataValue implements MetadataRe
   get representationType(): MetadataRepresentationType {
     if (hasValue(this.authority)) {
       return MetadataRepresentationType.AuthorityControlled;
+    } else if (hasValue(this.browseDefinition)) {
+      return MetadataRepresentationType.BrowseLink;
     } else {
       return MetadataRepresentationType.PlainText;
     }

src/app/core/submission/models/workspaceitem-section-identifiers.model.ts

@@ -0,0 +1,9 @@
+/*
+ * Object model for the data returned by the REST API to present minted identifiers in a submission section
+ */
+import { Identifier } from '../../../shared/object-list/identifier-data/identifier.model';
+
+export interface WorkspaceitemSectionIdentifiersObject {
+  identifiers?: Identifier[]
+  displayTypes?: string[]
+}

src/app/core/submission/models/workspaceitem-sections.model.ts

@@ -3,6 +3,7 @@ import { WorkspaceitemSectionFormObject } from './workspaceitem-section-form.mod
 import { WorkspaceitemSectionLicenseObject } from './workspaceitem-section-license.model';
 import { WorkspaceitemSectionUploadObject } from './workspaceitem-section-upload.model';
 import { WorkspaceitemSectionCcLicenseObject } from './workspaceitem-section-cc-license.model';
+import {WorkspaceitemSectionIdentifiersObject} from './workspaceitem-section-identifiers.model';
 import { WorkspaceitemSectionSherpaPoliciesObject } from './workspaceitem-section-sherpa-policies.model';
 
 /**
@@ -23,4 +24,5 @@ export type WorkspaceitemSectionDataType
   | WorkspaceitemSectionCcLicenseObject
   | WorkspaceitemSectionAccessesObject
   | WorkspaceitemSectionSherpaPoliciesObject
+  | WorkspaceitemSectionIdentifiersObject
   | string;

src/app/core/xsrf/xsrf.interceptor.ts

@@ -19,6 +19,8 @@ export const XSRF_REQUEST_HEADER = 'X-XSRF-TOKEN';
 export const XSRF_RESPONSE_HEADER = 'DSPACE-XSRF-TOKEN';
 // Name of cookie where we store the XSRF token
 export const XSRF_COOKIE = 'XSRF-TOKEN';
+// Name of cookie the backend expects the XSRF token to be in
+export const DSPACE_XSRF_COOKIE = 'DSPACE-XSRF-COOKIE';
 
 /**
  * Custom Http Interceptor intercepting Http Requests & Responses to

src/app/entity-groups/journal-entities/item-pages/journal-issue/journal-issue.component.html

@@ -2,12 +2,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'journalissue.page.edit'"></ds-dso-page-edit-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/entity-groups/journal-entities/item-pages/journal-issue/journal-issue.component.ts

@@ -1,7 +1,7 @@
 import { Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../../../../item-page/simple/item-types/versioned-item/versioned-item.component';
+import { ItemComponent } from '../../../../item-page/simple/item-types/shared/item.component';
 
 @listableObjectComponent('JournalIssue', ViewMode.StandalonePage)
 @Component({
@@ -12,5 +12,5 @@ import { VersionedItemComponent } from '../../../../item-page/simple/item-types/
 /**
  * The component for displaying metadata and relations of an item of the type Journal Issue
  */
-export class JournalIssueComponent extends VersionedItemComponent {
+export class JournalIssueComponent extends ItemComponent {
 }

src/app/entity-groups/journal-entities/item-pages/journal-volume/journal-volume.component.html

@@ -2,12 +2,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'journalvolume.page.edit'"></ds-dso-page-edit-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/entity-groups/journal-entities/item-pages/journal-volume/journal-volume.component.ts

@@ -1,7 +1,7 @@
 import { Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../../../../item-page/simple/item-types/versioned-item/versioned-item.component';
+import { ItemComponent } from '../../../../item-page/simple/item-types/shared/item.component';
 
 @listableObjectComponent('JournalVolume', ViewMode.StandalonePage)
 @Component({
@@ -12,5 +12,5 @@ import { VersionedItemComponent } from '../../../../item-page/simple/item-types/
 /**
  * The component for displaying metadata and relations of an item of the type Journal Volume
  */
-export class JournalVolumeComponent extends VersionedItemComponent {
+export class JournalVolumeComponent extends ItemComponent {
 }

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.html

@@ -2,12 +2,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'journal.page.edit'"></ds-dso-page-edit-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.spec.ts

@@ -35,6 +35,10 @@ import { VersionDataService } from '../../../../core/data/version-data.service';
 import { WorkspaceitemDataService } from '../../../../core/submission/workspaceitem-data.service';
 import { SearchService } from '../../../../core/shared/search/search.service';
 import { mockRouteService } from '../../../../item-page/simple/item-types/shared/item.component.spec';
+import {
+  BrowseDefinitionDataServiceStub
+} from '../../../../shared/testing/browse-definition-data-service.stub';
+import { BrowseDefinitionDataService } from '../../../../core/browse/browse-definition-data.service';
 
 let comp: JournalComponent;
 let fixture: ComponentFixture<JournalComponent>;
@@ -100,7 +104,8 @@ describe('JournalComponent', () => {
         { provide: BitstreamDataService, useValue: mockBitstreamDataService },
         { provide: WorkspaceitemDataService, useValue: {} },
         { provide: SearchService, useValue: {} },
-        { provide: RouteService, useValue: mockRouteService }
+        { provide: RouteService, useValue: mockRouteService },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
 
       schemas: [NO_ERRORS_SCHEMA]

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.ts

@@ -1,7 +1,7 @@
 import { Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../../../../item-page/simple/item-types/versioned-item/versioned-item.component';
+import { ItemComponent } from '../../../../item-page/simple/item-types/shared/item.component';
 
 @listableObjectComponent('Journal', ViewMode.StandalonePage)
 @Component({
@@ -12,5 +12,5 @@ import { VersionedItemComponent } from '../../../../item-page/simple/item-types/
 /**
  * The component for displaying metadata and relations of an item of the type Journal
  */
-export class JournalComponent extends VersionedItemComponent {
+export class JournalComponent extends ItemComponent {
 }

src/app/entity-groups/journal-entities/journal-entities.module.ts

@@ -21,6 +21,7 @@ import { JournalIssueSidebarSearchListElementComponent } from './item-list-eleme
 import { JournalSidebarSearchListElementComponent } from './item-list-elements/sidebar-search-list-elements/journal/journal-sidebar-search-list-element.component';
 import { ItemSharedModule } from '../../item-page/item-shared.module';
 import { ResultsBackButtonModule } from '../../shared/results-back-button/results-back-button.module';
+import { DsoPageModule } from '../../shared/dso-page/dso-page.module';
 
 const ENTRY_COMPONENTS = [
   // put only entry components that use custom decorator
@@ -49,7 +50,8 @@ const ENTRY_COMPONENTS = [
     CommonModule,
     ItemSharedModule,
     SharedModule,
-    ResultsBackButtonModule
+    ResultsBackButtonModule,
+    DsoPageModule
   ],
   declarations: [
     ...ENTRY_COMPONENTS

src/app/entity-groups/research-entities/item-pages/org-unit/org-unit.component.html

@@ -2,12 +2,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'orgunit.page.edit'"></ds-dso-page-edit-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/entity-groups/research-entities/item-pages/org-unit/org-unit.component.ts

@@ -1,7 +1,7 @@
 import { Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../../../../item-page/simple/item-types/versioned-item/versioned-item.component';
+import { ItemComponent } from '../../../../item-page/simple/item-types/shared/item.component';
 
 @listableObjectComponent('OrgUnit', ViewMode.StandalonePage)
 @Component({
@@ -12,5 +12,5 @@ import { VersionedItemComponent } from '../../../../item-page/simple/item-types/
 /**
  * The component for displaying metadata and relations of an item of the type Organisation Unit
  */
-export class OrgUnitComponent extends VersionedItemComponent {
+export class OrgUnitComponent extends ItemComponent {
 }

src/app/entity-groups/research-entities/item-pages/person/person.component.html

@@ -2,14 +2,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field class="mr-auto" [item]="object">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-orcid-button [pageRoute]="itemPageRoute" [dso]="object" class="mr-2"></ds-dso-page-orcid-button>
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'person.page.edit'"></ds-dso-page-edit-button>
-    <ds-person-page-claim-button [object]="object"></ds-person-page-claim-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/entity-groups/research-entities/item-pages/person/person.component.ts

@@ -1,7 +1,7 @@
 import { Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../../../../item-page/simple/item-types/versioned-item/versioned-item.component';
+import { ItemComponent } from '../../../../item-page/simple/item-types/shared/item.component';
 
 @listableObjectComponent('Person', ViewMode.StandalonePage)
 @Component({
@@ -12,5 +12,5 @@ import { VersionedItemComponent } from '../../../../item-page/simple/item-types/
 /**
  * The component for displaying metadata and relations of an item of the type Person
  */
-export class PersonComponent extends VersionedItemComponent {
+export class PersonComponent extends ItemComponent {
 }

src/app/entity-groups/research-entities/item-pages/project/project.component.html

@@ -2,12 +2,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'project.page.edit'"></ds-dso-page-edit-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/entity-groups/research-entities/item-pages/project/project.component.ts

@@ -1,7 +1,7 @@
 import { Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../../../../item-page/simple/item-types/versioned-item/versioned-item.component';
+import { ItemComponent } from '../../../../item-page/simple/item-types/shared/item.component';
 
 @listableObjectComponent('Project', ViewMode.StandalonePage)
 @Component({
@@ -12,5 +12,5 @@ import { VersionedItemComponent } from '../../../../item-page/simple/item-types/
 /**
  * The component for displaying metadata and relations of an item of the type Project
  */
-export class ProjectComponent extends VersionedItemComponent {
+export class ProjectComponent extends ItemComponent {
 }

src/app/entity-groups/research-entities/research-entities.module.ts

@@ -30,6 +30,7 @@ import { PersonSidebarSearchListElementComponent } from './item-list-elements/si
 import { ProjectSidebarSearchListElementComponent } from './item-list-elements/sidebar-search-list-elements/project/project-sidebar-search-list-element.component';
 import { ItemSharedModule } from '../../item-page/item-shared.module';
 import { ResultsBackButtonModule } from '../../shared/results-back-button/results-back-button.module';
+import { DsoPageModule } from '../../shared/dso-page/dso-page.module';
 
 const ENTRY_COMPONENTS = [
 // put only entry components that use custom decorator
@@ -71,7 +72,8 @@ const COMPONENTS = [
     ItemSharedModule,
     SharedModule,
     NgbTooltipModule,
-    ResultsBackButtonModule
+    ResultsBackButtonModule,
+    DsoPageModule,
   ],
   declarations: [
     ...COMPONENTS,

src/app/forgot-password/forgot-password-email/forgot-email.component.html

@@ -1,3 +1,3 @@
 <ds-register-email-form
-    [MESSAGE_PREFIX]="'forgot-email.form'">
+    [MESSAGE_PREFIX]="'forgot-email.form'" [typeRequest]="typeRequest">
 </ds-register-email-form>

src/app/forgot-password/forgot-password-email/forgot-email.component.ts

@@ -1,4 +1,5 @@
 import { Component } from '@angular/core';
+import { TYPE_REQUEST_FORGOT } from '../../register-email-form/register-email-form.component';
 
 @Component({
   selector: 'ds-forgot-email',
@@ -9,5 +10,5 @@ import { Component } from '@angular/core';
  * Component responsible the forgot password email step
  */
 export class ForgotEmailComponent {
-
+  typeRequest = TYPE_REQUEST_FORGOT;
 }

src/app/header/context-help-toggle/context-help-toggle.component.ts

@@ -1,6 +1,6 @@
-import { Component, OnInit, OnDestroy } from '@angular/core';
+import { Component, OnInit } from '@angular/core';
 import { ContextHelpService } from '../../shared/context-help.service';
-import { Observable, Subscription } from 'rxjs';
+import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
 
 /**
@@ -12,22 +12,15 @@ import { map } from 'rxjs/operators';
   templateUrl: './context-help-toggle.component.html',
   styleUrls: ['./context-help-toggle.component.scss']
 })
-export class ContextHelpToggleComponent implements OnInit, OnDestroy {
+export class ContextHelpToggleComponent implements OnInit {
   buttonVisible$: Observable<boolean>;
 
   constructor(
     private contextHelpService: ContextHelpService,
   ) { }
 
-  private subs: Subscription[];
-
   ngOnInit(): void {
     this.buttonVisible$ = this.contextHelpService.tooltipCount$().pipe(map(x => x > 0));
-    this.subs = [this.buttonVisible$.subscribe()];
-  }
-
-  ngOnDestroy() {
-    this.subs.forEach(sub => sub.unsubscribe());
   }
 
   onClick() {

src/app/home-page/recent-item-list/recent-item-list.component.ts

@@ -17,6 +17,7 @@ import { followLink, FollowLinkConfig } from '../../shared/utils/follow-link-con
 import { APP_CONFIG, AppConfig } from '../../../config/app-config.interface';
 import { isPlatformBrowser } from '@angular/common';
 import { setPlaceHolderAttributes } from '../../shared/utils/object-list-utils';
+import { DSpaceObjectType } from '../../core/shared/dspace-object-type.model';
 
 @Component({
   selector: 'ds-recent-item-list',
@@ -67,6 +68,7 @@ export class RecentItemListComponent implements OnInit {
     this.itemRD$ = this.searchService.search(
       new PaginatedSearchOptions({
         pagination: this.paginationConfig,
+        dsoTypes: [DSpaceObjectType.ITEM],
         sort: this.sortConfig,
       }),
       undefined,

src/app/init.service.spec.ts

@@ -22,7 +22,6 @@ import { provideMockStore } from '@ngrx/store/testing';
 import { AppComponent } from './app.component';
 import { RouteService } from './core/services/route.service';
 import { getMockLocaleService } from './app.component.spec';
-import { MenuServiceStub } from './shared/testing/menu-service.stub';
 import { CorrelationIdService } from './correlation-id/correlation-id.service';
 import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
 import { TranslateLoaderMock } from './shared/mocks/translate-loader.mock';
@@ -124,6 +123,7 @@ describe('InitService', () => {
     let transferStateSpy;
     let metadataServiceSpy;
     let breadcrumbsServiceSpy;
+    let menuServiceSpy;
 
     const BLOCKING = {
       t: {  core: { auth: { blocking: true } } },
@@ -150,6 +150,9 @@ describe('InitService', () => {
       metadataServiceSpy = jasmine.createSpyObj('metadataService', [
         'listenForRouteChange',
       ]);
+      menuServiceSpy = jasmine.createSpyObj('menuServiceSpy', [
+        'listenForRouteChanges',
+      ]);
 
 
       TestBed.resetTestingModule();
@@ -175,7 +178,7 @@ describe('InitService', () => {
           { provide: AuthService, useValue: new AuthServiceMock() },
           { provide: Router, useValue: new RouterMock() },
           { provide: ActivatedRoute, useValue: new MockActivatedRoute() },
-          { provide: MenuService, useValue: new MenuServiceStub() },
+          { provide: MenuService, useValue: menuServiceSpy },
           { provide: ThemeService, useValue: getMockThemeService() },
           provideMockStore({ initialState }),
           AppComponent,
@@ -190,6 +193,7 @@ describe('InitService', () => {
         service.initRouteListeners();
         expect(metadataServiceSpy.listenForRouteChange).toHaveBeenCalledTimes(1);
         expect(breadcrumbsServiceSpy.listenForRouteChanges).toHaveBeenCalledTimes(1);
+        expect(breadcrumbsServiceSpy.listenForRouteChanges).toHaveBeenCalledTimes(1);
       }));
     });
 

src/app/init.service.ts

@@ -23,6 +23,7 @@ import { ThemeService } from './shared/theme-support/theme.service';
 import { isAuthenticationBlocking } from './core/auth/selectors';
 import { distinctUntilChanged, find } from 'rxjs/operators';
 import { Observable } from 'rxjs';
+import { MenuService } from './shared/menu/menu.service';
 
 /**
  * Performs the initialization of the app.
@@ -51,6 +52,8 @@ export abstract class InitService {
     protected metadata: MetadataService,
     protected breadcrumbsService: BreadcrumbsService,
     protected themeService: ThemeService,
+    protected menuService: MenuService,
+
   ) {
   }
 
@@ -184,6 +187,7 @@ export abstract class InitService {
     this.metadata.listenForRouteChange();
     this.breadcrumbsService.listenForRouteChanges();
     this.themeService.listenForRouteChanges();
+    this.menuService.listenForRouteChanges();
   }
 
   /**

src/app/item-page/edit-item-page/edit-item-page.component.html

@@ -3,8 +3,8 @@
         <div class="col-12">
             <h2 class="border-bottom">{{'item.edit.head' | translate}}</h2>
             <div class="pt-2">
-                <ul class="nav nav-tabs justify-content-start">
-                    <li *ngFor="let page of pages" class="nav-item">
+                <ul class="nav nav-tabs justify-content-start" role="tablist">
+                    <li *ngFor="let page of pages" class="nav-item" [attr.aria-selected]="page.page === currentPage" role="tab">
                         <a *ngIf="(page.enabled | async)"
                            class="nav-link"
                            [ngClass]="{'active' : page.page === currentPage}"

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

@@ -34,6 +34,9 @@ import { ItemAuthorizationsComponent } from './item-authorizations/item-authoriz
 import { ObjectValuesPipe } from '../../shared/utils/object-values-pipe';
 import { ResourcePoliciesModule } from '../../shared/resource-policies/resource-policies.module';
 import { ItemVersionsModule } from '../versions/item-versions.module';
+import { IdentifierDataService } from '../../core/data/identifier-data.service';
+import { IdentifierDataComponent } from '../../shared/object-list/identifier-data/identifier-data.component';
+import { ItemRegisterDoiComponent } from './item-register-doi/item-register-doi.component';
 import { DsoSharedModule } from '../../dso-shared/dso-shared.module';
 
 
@@ -76,10 +79,13 @@ import { DsoSharedModule } from '../../dso-shared/dso-shared.module';
     ItemMoveComponent,
     ItemEditBitstreamDragHandleComponent,
     VirtualMetadataComponent,
-    ItemAuthorizationsComponent
+    ItemAuthorizationsComponent,
+    IdentifierDataComponent,
+    ItemRegisterDoiComponent
   ],
   providers: [
     BundleDataService,
+    IdentifierDataService,
     ObjectValuesPipe
   ],
 })

src/app/item-page/edit-item-page/edit-item-page.routing-paths.ts

@@ -5,3 +5,4 @@ export const ITEM_EDIT_PUBLIC_PATH = 'public';
 export const ITEM_EDIT_DELETE_PATH = 'delete';
 export const ITEM_EDIT_MOVE_PATH = 'move';
 export const ITEM_EDIT_AUTHORIZATIONS_PATH = 'authorizations';
+export const ITEM_EDIT_REGISTER_DOI_PATH = 'register-doi';

src/app/item-page/edit-item-page/edit-item-page.routing.module.ts

@@ -10,6 +10,7 @@ import { ItemStatusComponent } from './item-status/item-status.component';
 import { ItemBitstreamsComponent } from './item-bitstreams/item-bitstreams.component';
 import { ItemCollectionMapperComponent } from './item-collection-mapper/item-collection-mapper.component';
 import { ItemMoveComponent } from './item-move/item-move.component';
+import { ItemRegisterDoiComponent } from './item-register-doi/item-register-doi.component';
 import { ItemRelationshipsComponent } from './item-relationships/item-relationships.component';
 import { I18nBreadcrumbResolver } from '../../core/breadcrumbs/i18n-breadcrumb.resolver';
 import { ItemVersionHistoryComponent } from './item-version-history/item-version-history.component';
@@ -26,7 +27,8 @@ import {
   ITEM_EDIT_PRIVATE_PATH,
   ITEM_EDIT_PUBLIC_PATH,
   ITEM_EDIT_REINSTATE_PATH,
-  ITEM_EDIT_WITHDRAW_PATH
+  ITEM_EDIT_WITHDRAW_PATH,
+  ITEM_EDIT_REGISTER_DOI_PATH
 } from './edit-item-page.routing-paths';
 import { ItemPageReinstateGuard } from './item-page-reinstate.guard';
 import { ItemPageWithdrawGuard } from './item-page-withdraw.guard';
@@ -38,6 +40,7 @@ import { ItemPageRelationshipsGuard } from './item-page-relationships.guard';
 import { ItemPageVersionHistoryGuard } from './item-page-version-history.guard';
 import { ItemPageCollectionMapperGuard } from './item-page-collection-mapper.guard';
 import { ThemedDsoEditMetadataComponent } from '../../dso-shared/dso-edit-metadata/themed-dso-edit-metadata.component';
+import { ItemPageRegisterDoiGuard } from './item-page-register-doi.guard';
 
 /**
  * Routing module that handles the routing for the Edit Item page administrator functionality
@@ -142,6 +145,12 @@ import { ThemedDsoEditMetadataComponent } from '../../dso-shared/dso-edit-metada
             component: ItemMoveComponent,
             data: { title: 'item.edit.move.title' },
           },
+          {
+            path: ITEM_EDIT_REGISTER_DOI_PATH,
+            component: ItemRegisterDoiComponent,
+            canActivate: [ItemPageRegisterDoiGuard],
+            data: { title: 'item.edit.register-doi.title' },
+          },
           {
             path: ITEM_EDIT_AUTHORIZATIONS_PATH,
             children: [
@@ -186,6 +195,7 @@ import { ThemedDsoEditMetadataComponent } from '../../dso-shared/dso-edit-metada
     ItemPageRelationshipsGuard,
     ItemPageVersionHistoryGuard,
     ItemPageCollectionMapperGuard,
+    ItemPageRegisterDoiGuard,
   ]
 })
 export class EditItemPageRoutingModule {

src/app/item-page/edit-item-page/item-page-register-doi.guard.ts

@@ -0,0 +1,31 @@
+import { Injectable } from '@angular/core';
+import { DsoPageSingleFeatureGuard } from '../../core/data/feature-authorization/feature-authorization-guard/dso-page-single-feature.guard';
+import { Item } from '../../core/shared/item.model';
+import { ItemPageResolver } from '../item-page.resolver';
+import { AuthorizationDataService } from '../../core/data/feature-authorization/authorization-data.service';
+import { ActivatedRouteSnapshot, Router, RouterStateSnapshot } from '@angular/router';
+import { Observable, of as observableOf } from 'rxjs';
+import { FeatureID } from '../../core/data/feature-authorization/feature-id';
+import { AuthService } from '../../core/auth/auth.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+/**
+ * Guard for preventing unauthorized access to certain {@link Item} pages requiring DOI registration rights
+ */
+export class ItemPageRegisterDoiGuard extends DsoPageSingleFeatureGuard<Item> {
+  constructor(protected resolver: ItemPageResolver,
+              protected authorizationService: AuthorizationDataService,
+              protected router: Router,
+              protected authService: AuthService) {
+    super(resolver, authorizationService, router, authService);
+  }
+
+  /**
+   * Check DOI registration authorization rights
+   */
+  getFeatureID(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<FeatureID> {
+    return observableOf(FeatureID.CanRegisterDOI);
+  }
+}

src/app/item-page/edit-item-page/item-page-status.guard.ts

@@ -27,6 +27,6 @@ export class ItemPageStatusGuard extends DsoPageSomeFeatureGuard<Item> {
    * Check authorization rights
    */
   getFeatureIDs(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<FeatureID[]> {
-    return observableOf([FeatureID.CanManageMappings, FeatureID.WithdrawItem, FeatureID.ReinstateItem, FeatureID.CanManagePolicies, FeatureID.CanMakePrivate, FeatureID.CanDelete, FeatureID.CanMove]);
+    return observableOf([FeatureID.CanManageMappings, FeatureID.WithdrawItem, FeatureID.ReinstateItem, FeatureID.CanManagePolicies, FeatureID.CanMakePrivate, FeatureID.CanDelete, FeatureID.CanMove, FeatureID.CanRegisterDOI]);
   }
 }

src/app/item-page/edit-item-page/item-register-doi/item-register-doi-component.html

@@ -0,0 +1,24 @@
+<div class="container">
+  <div class="row">
+    <div class="col-12">
+      <h2>{{headerMessage | translate: {id: item.handle} }}</h2>
+      <p>{{descriptionMessage | translate}}</p>
+      <div *ngFor="let identifier of (identifiers$ | async)" class="w-100 p">
+        <div *ngIf="(identifier.identifierType=='doi')">
+          <p class="float-left">{{doiToUpdateMessage | translate}}: {{identifier.value}}
+            ({{"item.edit.identifiers.doi.status."+identifier.identifierStatus|translate}})
+          </p>
+        </div>
+      </div>
+      <ds-modify-item-overview [item]="item"></ds-modify-item-overview>
+      <div class="space-children-mr">
+        <button (click)="performAction()" class="btn btn-outline-secondary perform-action">{{confirmMessage | translate}}
+        </button>
+        <button [routerLink]="[itemPageRoute, 'edit']" class="btn btn-outline-secondary cancel">
+          {{cancelMessage| translate}}
+        </button>
+      </div>
+    </div>
+  </div>
+
+</div>

src/app/item-page/edit-item-page/item-register-doi/item-register-doi.component.spec.ts

@@ -0,0 +1,106 @@
+import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
+import { Item } from '../../../core/shared/item.model';
+import { RouterStub } from '../../../shared/testing/router.stub';
+import { of as observableOf } from 'rxjs';
+import { NotificationsServiceStub } from '../../../shared/testing/notifications-service.stub';
+import { CommonModule } from '@angular/common';
+import { FormsModule } from '@angular/forms';
+import { RouterTestingModule } from '@angular/router/testing';
+import { TranslateModule } from '@ngx-translate/core';
+import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
+import { ActivatedRoute, Router } from '@angular/router';
+import { ItemDataService } from '../../../core/data/item-data.service';
+import { NotificationsService } from '../../../shared/notifications/notifications.service';
+import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
+import { By } from '@angular/platform-browser';
+import { ItemRegisterDoiComponent } from './item-register-doi.component';
+import { createSuccessfulRemoteDataObject, createSuccessfulRemoteDataObject$ } from '../../../shared/remote-data.utils';
+import { IdentifierDataService } from '../../../core/data/identifier-data.service';
+
+let comp: ItemRegisterDoiComponent;
+let fixture: ComponentFixture<ItemRegisterDoiComponent>;
+
+let mockItem;
+let itemPageUrl;
+let routerStub;
+let mockItemDataService: ItemDataService;
+let mockIdentifierDataService: IdentifierDataService;
+let routeStub;
+let notificationsServiceStub;
+
+describe('ItemRegisterDoiComponent', () => {
+  beforeEach(waitForAsync(() => {
+
+    mockItem = Object.assign(new Item(), {
+      id: 'fake-id',
+      handle: 'fake/handle',
+      lastModified: '2018',
+      isWithdrawn: true
+    });
+
+    itemPageUrl = `fake-url/${mockItem.id}`;
+    routerStub = Object.assign(new RouterStub(), {
+      url: `${itemPageUrl}/edit`
+    });
+
+    mockIdentifierDataService = jasmine.createSpyObj('mockIdentifierDataService', {
+      getIdentifierDataFor: createSuccessfulRemoteDataObject$({'identifiers': []}),
+      getIdentifierRegistrationConfiguration: createSuccessfulRemoteDataObject$('true'),
+      registerIdentifier: createSuccessfulRemoteDataObject$({'identifiers': []}),
+    });
+
+    mockItemDataService = jasmine.createSpyObj('mockItemDataService', {
+      registerDOI: createSuccessfulRemoteDataObject$(mockItem)
+    });
+
+    routeStub = {
+      data: observableOf({
+        dso: createSuccessfulRemoteDataObject(Object.assign(new Item(), {
+          id: 'fake-id'
+        }))
+      })
+    };
+
+    notificationsServiceStub = new NotificationsServiceStub();
+
+    TestBed.configureTestingModule({
+      imports: [CommonModule, FormsModule, RouterTestingModule.withRoutes([]), TranslateModule.forRoot(), NgbModule],
+      declarations: [ItemRegisterDoiComponent],
+      providers: [
+        { provide: ActivatedRoute, useValue: routeStub },
+        { provide: Router, useValue: routerStub },
+        { provide: ItemDataService, useValue: mockItemDataService },
+        { provide: IdentifierDataService, useValue: mockIdentifierDataService},
+        { provide: NotificationsService, useValue: notificationsServiceStub }
+      ], schemas: [
+        CUSTOM_ELEMENTS_SCHEMA
+      ]
+    }).compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ItemRegisterDoiComponent);
+    comp = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should render a page with messages based on the \'register-doi\' messageKey', () => {
+    const header = fixture.debugElement.query(By.css('h2')).nativeElement;
+    expect(header.innerHTML).toContain('item.edit.register-doi.header');
+    const description = fixture.debugElement.query(By.css('p')).nativeElement;
+    expect(description.innerHTML).toContain('item.edit.register-doi.description');
+    const confirmButton = fixture.debugElement.query(By.css('button.perform-action')).nativeElement;
+    expect(confirmButton.innerHTML).toContain('item.edit.register-doi.confirm');
+    const cancelButton = fixture.debugElement.query(By.css('button.cancel')).nativeElement;
+    expect(cancelButton.innerHTML).toContain('item.edit.register-doi.cancel');
+  });
+
+  describe('performAction', () => {
+    it('should call registerDOI function from the ItemDataService', () => {
+      spyOn(comp, 'processRestResponse');
+      comp.performAction();
+      expect(mockIdentifierDataService.registerIdentifier).toHaveBeenCalledWith(comp.item, 'doi');
+      expect(comp.processRestResponse).toHaveBeenCalled();
+    });
+  });
+});

src/app/item-page/edit-item-page/item-register-doi/item-register-doi.component.ts

@@ -0,0 +1,95 @@
+import { Component } from '@angular/core';
+import { ActivatedRoute, Router } from '@angular/router';
+import { TranslateService } from '@ngx-translate/core';
+
+import { AbstractSimpleItemActionComponent } from '../simple-item-action/abstract-simple-item-action.component';
+import { RemoteData } from '../../../core/data/remote-data';
+import { Item } from '../../../core/shared/item.model';
+import { NotificationsService } from '../../../shared/notifications/notifications.service';
+import { ItemDataService } from '../../../core/data/item-data.service';
+import { getFirstSucceededRemoteData } from '../../../core/shared/operators';
+import { first, map } from 'rxjs/operators';
+import { hasValue } from '../../../shared/empty.util';
+import { Observable } from 'rxjs';
+import { getItemPageRoute } from '../../item-page-routing-paths';
+import { IdentifierDataService } from '../../../core/data/identifier-data.service';
+import { Identifier } from '../../../shared/object-list/identifier-data/identifier.model';
+
+@Component({
+  selector: 'ds-item-register-doi',
+  templateUrl: './item-register-doi-component.html'
+})
+/**
+ * Component responsible for rendering the Item Register DOI page
+ */
+export class ItemRegisterDoiComponent extends AbstractSimpleItemActionComponent {
+
+  protected messageKey = 'register-doi';
+  doiToUpdateMessage = 'item.edit.' + this.messageKey + '.to-update';
+  identifiers$: Observable<Identifier[]>;
+  processing = false;
+
+  constructor(protected route: ActivatedRoute,
+              protected router: Router,
+              protected notificationsService: NotificationsService,
+              protected itemDataService: ItemDataService,
+              protected translateService: TranslateService,
+              protected identifierDataService: IdentifierDataService) {
+    super(route, router, notificationsService, itemDataService, translateService);
+  }
+
+  /**
+   * Initialise component
+   */
+  ngOnInit(): void {
+    this.itemRD$ = this.route.data.pipe(
+      map((data) => data.dso),
+      getFirstSucceededRemoteData()
+    )as Observable<RemoteData<Item>>;
+
+    this.itemRD$.pipe(first()).subscribe((rd) => {
+        this.item = rd.payload;
+        this.itemPageRoute = getItemPageRoute(this.item);
+        this.identifiers$ = this.identifierDataService.getIdentifierDataFor(this.item).pipe(
+          map((identifierRD) => {
+            if (identifierRD.statusCode !== 401 && hasValue(identifierRD.payload)) {
+              return identifierRD.payload.identifiers;
+            } else {
+              return null;
+            }
+          }),
+        );
+      }
+    );
+
+    this.confirmMessage = 'item.edit.' + this.messageKey + '.confirm';
+    this.cancelMessage = 'item.edit.' + this.messageKey + '.cancel';
+    this.headerMessage = 'item.edit.' + this.messageKey + '.header';
+    this.descriptionMessage = 'item.edit.' + this.messageKey + '.description';
+
+
+  }
+
+  /**
+   * Perform the register DOI action to the item
+   */
+  performAction() {
+    this.registerDoi();
+  }
+
+  /**
+   * Request that a pending, minted or null DOI be queued for registration
+   */
+  registerDoi() {
+    this.processing = true;
+    this.identifierDataService.registerIdentifier(this.item, 'doi').subscribe(
+      (response: RemoteData<Item>) => {
+        if (response.hasCompleted) {
+          this.processing = false;
+          this.processRestResponse(response);
+        }
+      }
+    );
+  }
+
+}

src/app/item-page/edit-item-page/item-status/item-status.component.html

@@ -8,6 +8,17 @@
       {{statusData[statusKey]}}
     </div>
   </div>
+
+  <div *ngFor="let identifier of (identifiers$ | async)" class="w-100">
+    <div *ngIf="(identifier.identifierType=='doi')">
+      <div class="col-3 float-left status-label">
+        {{identifier.identifierType.toLocaleUpperCase()}}
+      </div>
+      <div class="col-9 float-left status-label">{{identifier.value}}
+        ({{"item.edit.identifiers.doi.status."+identifier.identifierStatus|translate}})</div>
+    </div>
+  </div>
+
   <div class="col-3 float-left status-label">
     {{'item.edit.tabs.status.labels.itemPage' | translate}}:
   </div>
@@ -18,4 +29,5 @@
   <div *ngFor="let operation of (operations$ | async)" class="w-100" [ngClass]="{'pt-3': operation}">
     <ds-item-operation *ngIf="operation" [operation]="operation"></ds-item-operation>
   </div>
+
 </div>

src/app/item-page/edit-item-page/item-status/item-status.component.spec.ts

@@ -11,8 +11,14 @@ import { Item } from '../../../core/shared/item.model';
 import { By } from '@angular/platform-browser';
 import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
 import { of as observableOf } from 'rxjs';
-import { createSuccessfulRemoteDataObject } from '../../../shared/remote-data.utils';
+import { createSuccessfulRemoteDataObject, createSuccessfulRemoteDataObject$ } from '../../../shared/remote-data.utils';
 import { AuthorizationDataService } from '../../../core/data/feature-authorization/authorization-data.service';
+import { IdentifierDataService } from '../../../core/data/identifier-data.service';
+import { ConfigurationDataService } from '../../../core/data/configuration-data.service';
+import { ConfigurationProperty } from '../../../core/shared/configuration-property.model';
+
+let mockIdentifierDataService: IdentifierDataService;
+let mockConfigurationDataService: ConfigurationDataService;
 
 describe('ItemStatusComponent', () => {
   let comp: ItemStatusComponent;
@@ -28,6 +34,20 @@ describe('ItemStatusComponent', () => {
     }
   });
 
+  mockIdentifierDataService = jasmine.createSpyObj('mockIdentifierDataService', {
+    getIdentifierDataFor: createSuccessfulRemoteDataObject$({'identifiers': []}),
+    getIdentifierRegistrationConfiguration: createSuccessfulRemoteDataObject$('true')
+  });
+
+  mockConfigurationDataService = jasmine.createSpyObj('configurationDataService', {
+    findByPropertyName: createSuccessfulRemoteDataObject$(Object.assign(new ConfigurationProperty(), {
+      name: 'identifiers.item-status.register-doi',
+      values: [
+        'true'
+      ]
+    }))
+  });
+
   const itemPageUrl = `/items/${mockItem.uuid}`;
 
   const routeStub = {
@@ -50,6 +70,8 @@ describe('ItemStatusComponent', () => {
         { provide: ActivatedRoute, useValue: routeStub },
         { provide: HostWindowService, useValue: new HostWindowServiceStub(0) },
         { provide: AuthorizationDataService, useValue: authorizationService },
+        { provide: IdentifierDataService, useValue: mockIdentifierDataService },
+        { provide: ConfigurationDataService, useValue: mockConfigurationDataService }
       ], schemas: [CUSTOM_ELEMENTS_SCHEMA]
     }).compileComponents();
   }));

src/app/item-page/edit-item-page/item-status/item-status.component.ts

@@ -3,14 +3,21 @@ import { fadeIn, fadeInOut } from '../../../shared/animations/fade';
 import { Item } from '../../../core/shared/item.model';
 import { ActivatedRoute } from '@angular/router';
 import { ItemOperation } from '../item-operation/itemOperation.model';
-import { distinctUntilChanged, first, map, mergeMap, toArray } from 'rxjs/operators';
-import { BehaviorSubject, Observable, from as observableFrom } from 'rxjs';
+import { distinctUntilChanged, first, map, mergeMap, switchMap, toArray } from 'rxjs/operators';
+import { BehaviorSubject, Observable, Subscription } from 'rxjs';
 import { RemoteData } from '../../../core/data/remote-data';
 import { getItemEditRoute, getItemPageRoute } from '../../item-page-routing-paths';
 import { AuthorizationDataService } from '../../../core/data/feature-authorization/authorization-data.service';
 import { FeatureID } from '../../../core/data/feature-authorization/feature-id';
 import { hasValue } from '../../../shared/empty.util';
-import { getAllSucceededRemoteDataPayload } from '../../../core/shared/operators';
+import {
+  getAllSucceededRemoteDataPayload, getFirstSucceededRemoteData, getRemoteDataPayload,
+} from '../../../core/shared/operators';
+import { IdentifierDataService } from '../../../core/data/identifier-data.service';
+import { Identifier } from '../../../shared/object-list/identifier-data/identifier.model';
+import { ConfigurationProperty } from '../../../core/shared/configuration-property.model';
+import { ConfigurationDataService } from '../../../core/data/configuration-data.service';
+import { IdentifierData } from '../../../shared/object-list/identifier-data/identifier-data.model';
 
 @Component({
   selector: 'ds-item-status',
@@ -47,9 +54,15 @@ export class ItemStatusComponent implements OnInit {
   operations$: BehaviorSubject<ItemOperation[]> = new BehaviorSubject<ItemOperation[]>([]);
 
   /**
-   * The keys of the actions (to loop over)
+   * Identifiers (handles, DOIs)
    */
-  actionsKeys;
+  identifiers$: Observable<Identifier[]>;
+
+  /**
+   * Configuration and state variables regarding DOIs
+   */
+
+  public subs: Subscription[] = [];
 
   /**
    * Route to the item's page
@@ -57,9 +70,15 @@ export class ItemStatusComponent implements OnInit {
   itemPageRoute$: Observable<string>;
 
   constructor(private route: ActivatedRoute,
-              private authorizationService: AuthorizationDataService) {
+              private authorizationService: AuthorizationDataService,
+              private identifierDataService: IdentifierDataService,
+              private configurationService: ConfigurationDataService,
+  ) {
   }
 
+  /**
+   * Initialise component
+   */
   ngOnInit(): void {
     this.itemRD$ = this.route.parent.data.pipe(map((data) => data.dso));
     this.itemRD$.pipe(
@@ -72,12 +91,37 @@ export class ItemStatusComponent implements OnInit {
         lastModified: item.lastModified
       });
       this.statusDataKeys = Object.keys(this.statusData);
+
+      // Observable for item identifiers (retrieved from embedded link)
+      this.identifiers$ = this.identifierDataService.getIdentifierDataFor(item).pipe(
+        map((identifierRD) => {
+          if (identifierRD.statusCode !== 401 && hasValue(identifierRD.payload)) {
+            return identifierRD.payload.identifiers;
+          } else {
+            return null;
+          }
+        }),
+      );
+
+      // Observable for configuration determining whether the Register DOI feature is enabled
+      let registerConfigEnabled$: Observable<boolean> = this.configurationService.findByPropertyName('identifiers.item-status.register-doi').pipe(
+        getFirstSucceededRemoteData(),
+        getRemoteDataPayload(),
+        map((enabled: ConfigurationProperty) => {
+          if (enabled !== undefined && enabled.values) {
+            return true;
+          }
+          return false;
+        })
+      );
+
       /*
+      Construct a base list of operations.
         The key is used to build messages
           i18n example: 'item.edit.tabs.status.buttons.<key>.label'
         The value is supposed to be a href for the button
       */
-      const operations = [];
+      const operations: ItemOperation[] = [];
       operations.push(new ItemOperation('authorizations', this.getCurrentUrl(item) + '/authorizations', FeatureID.CanManagePolicies, true));
       operations.push(new ItemOperation('mappedCollections', this.getCurrentUrl(item) + '/mapper', FeatureID.CanManageMappings, true));
       if (item.isWithdrawn) {
@@ -92,27 +136,74 @@ export class ItemStatusComponent implements OnInit {
       }
       operations.push(new ItemOperation('delete', this.getCurrentUrl(item) + '/delete', FeatureID.CanDelete, true));
       operations.push(new ItemOperation('move', this.getCurrentUrl(item) + '/move', FeatureID.CanMove, true));
-
       this.operations$.next(operations);
 
-      observableFrom(operations).pipe(
-        mergeMap((operation) => {
-          if (hasValue(operation.featureID)) {
-            return this.authorizationService.isAuthorized(operation.featureID, item.self).pipe(
+      /*
+       When the identifier data stream changes, determine whether the register DOI button should be shown or not.
+       This is based on whether the DOI is in the right state (minted or pending, not already queued for registration
+       or registered) and whether the configuration property identifiers.item-status.register-doi is true
+       */
+      this.identifierDataService.getIdentifierDataFor(item).pipe(
+        getFirstSucceededRemoteData(),
+        getRemoteDataPayload(),
+        mergeMap((data: IdentifierData) => {
+          let identifiers = data.identifiers;
+          let no_doi = true;
+          let pending = false;
+          if (identifiers !== undefined && identifiers !== null) {
+            identifiers.forEach((identifier: Identifier) => {
+              if (hasValue(identifier) && identifier.identifierType === 'doi') {
+                // The item has some kind of DOI
+                no_doi = false;
+                if (identifier.identifierStatus === 'PENDING' || identifier.identifierStatus === 'MINTED'
+                  || identifier.identifierStatus == null) {
+                  // The item's DOI is pending, minted or null.
+                  // It isn't registered, reserved, queued for registration or reservation or update, deleted
+                  // or queued for deletion.
+                  pending = true;
+                }
+              }
+            });
+          }
+          // If there is no DOI, or a pending/minted/null DOI, and the config is enabled, return true
+          return registerConfigEnabled$.pipe(
+            map((enabled: boolean) => {
+              return enabled && (pending || no_doi);
+            }
+          ));
+        }),
+        // Switch map pushes the register DOI operation onto a copy of the base array then returns to the pipe
+        switchMap((showDoi: boolean) => {
+          let ops = [...operations];
+          if (showDoi) {
+            ops.push(new ItemOperation('register-doi', this.getCurrentUrl(item) + '/register-doi', FeatureID.CanRegisterDOI, true));
+          }
+          return ops;
+        }),
+        // Merge map checks and transforms each operation in the array based on whether it is authorized or not (disabled)
+        mergeMap((op: ItemOperation) => {
+          if (hasValue(op.featureID)) {
+            return this.authorizationService.isAuthorized(op.featureID, item.self).pipe(
               distinctUntilChanged(),
-              map((authorized) => new ItemOperation(operation.operationKey, operation.operationUrl, operation.featureID, !authorized, authorized))
+              map((authorized) => new ItemOperation(op.operationKey, op.operationUrl, op.featureID, !authorized, authorized))
             );
           } else {
-            return [operation];
+            return [op];
           }
         }),
-        toArray()
-      ).subscribe((ops) => this.operations$.next(ops));
+        // Wait for all operations to be emitted and return as an array
+        toArray(),
+      ).subscribe((data) => {
+        // Update the operations$ subject that draws the administrative buttons on the status page
+        this.operations$.next(data);
+      });
     });
+
     this.itemPageRoute$ = this.itemRD$.pipe(
       getAllSucceededRemoteDataPayload(),
       map((item) => getItemPageRoute(item))
     );
+
   }
 
   /**
@@ -127,4 +218,10 @@ export class ItemStatusComponent implements OnInit {
     return hasValue(operation) ? operation.operationKey : undefined;
   }
 
+  ngOnDestroy(): void {
+    this.subs
+      .filter((subscription) => hasValue(subscription))
+      .forEach((subscription) => subscription.unsubscribe());
+  }
+
 }

src/app/item-page/field-components/metadata-values/metadata-values.component.html

@@ -1,16 +1,38 @@
 <ds-metadata-field-wrapper [label]="label | translate">
     <ng-container *ngFor="let mdValue of mdValues; let last=last;">
-      <ng-container *ngTemplateOutlet="(renderMarkdown ? markdown : simple); context: {value: mdValue.value}">
+      <!--
+      Choose a template. Priority: markdown, link, browse link.
+      -->
+      <ng-container *ngTemplateOutlet="(renderMarkdown ? markdown : (hasLink(mdValue) ? link : (hasBrowseDefinition() ? browselink : simple)));
+        context: {value: mdValue.value}">
       </ng-container>
       <span class="separator" *ngIf="!last" [innerHTML]="separator"></span>
     </ng-container>
 </ds-metadata-field-wrapper>
 
+<!-- Render value as markdown -->
 <ng-template #markdown let-value="value">
   <span class="dont-break-out" [innerHTML]="value | dsMarkdown | async">
   </span>
 </ng-template>
 
+<!-- Render value as a link (href and label) -->
+<ng-template #link let-value="value">
+    <a class="dont-break-out ds-simple-metadata-link" target="_blank" [href]="value">
+      {{value}}
+    </a>
+</ng-template>
+
+<!-- Render simple value in a span  -->
 <ng-template #simple let-value="value">
   <span class="dont-break-out preserve-line-breaks">{{value}}</span>
 </ng-template>
+
+<!-- Render value as a link to browse index -->
+<ng-template #browselink let-value="value">
+  <a class="dont-break-out preserve-line-breaks ds-browse-link"
+     [routerLink]="['/browse', browseDefinition.id]"
+     [queryParams]="getQueryParams(value)">
+    {{value}}
+  </a>
+</ng-template>

src/app/item-page/field-components/metadata-values/metadata-values.component.spec.ts

@@ -52,6 +52,7 @@ describe('MetadataValuesComponent', () => {
     comp.mdValues = mockMetadata;
     comp.separator = mockSeperator;
     comp.label = mockLabel;
+    comp.urlRegex = /^.*test.*$/;
     fixture.detectChanges();
   }));
 
@@ -67,4 +68,9 @@ describe('MetadataValuesComponent', () => {
     expect(separators.length).toBe(mockMetadata.length - 1);
   });
 
+  it('should correctly detect a pattern on string containing "test"', () => {
+    const mdValue = {value: 'This is a test value'} as MetadataValue;
+    expect(comp.hasLink(mdValue)).toBe(true);
+  });
+
 });

src/app/item-page/field-components/metadata-values/metadata-values.component.ts

@@ -1,6 +1,8 @@
 import { Component, Inject, Input, OnChanges, SimpleChanges } from '@angular/core';
 import { MetadataValue } from '../../../core/shared/metadata.models';
 import { APP_CONFIG, AppConfig } from '../../../../config/app-config.interface';
+import { BrowseDefinition } from '../../../core/shared/browse-definition.model';
+import { hasValue } from '../../../shared/empty.util';
 
 /**
  * This component renders the configured 'values' into the ds-metadata-field-wrapper component.
@@ -40,12 +42,51 @@ export class MetadataValuesComponent implements OnChanges {
    */
   @Input() enableMarkdown = false;
 
+  /**
+   * Whether any valid HTTP(S) URL should be rendered as a link
+   */
+  @Input() urlRegex?;
+
   /**
    * This variable will be true if both {@link environment.markdown.enabled} and {@link enableMarkdown} are true.
    */
   renderMarkdown;
 
+  @Input() browseDefinition?: BrowseDefinition;
+
   ngOnChanges(changes: SimpleChanges): void {
     this.renderMarkdown = !!this.appConfig.markdown.enabled && this.enableMarkdown;
   }
+
+  /**
+   * Does this metadata value have a configured link to a browse definition?
+   */
+  hasBrowseDefinition(): boolean {
+    return hasValue(this.browseDefinition);
+  }
+
+  /**
+   * Does this metadata value have a valid URL that should be rendered as a link?
+   * @param value A MetadataValue being displayed
+   */
+  hasLink(value: MetadataValue): boolean {
+    if (hasValue(this.urlRegex)) {
+      const pattern = new RegExp(this.urlRegex);
+      return pattern.test(value.value);
+    }
+    return false;
+  }
+
+  /**
+   * Return a queryparams object for use in a link, with the key dependent on whether this browse
+   * definition is metadata browse, or item browse
+   * @param value the specific metadata value being linked
+   */
+  getQueryParams(value) {
+    let queryParams = {startsWith: value};
+    if (this.browseDefinition.metadataBrowse) {
+      return {value: value};
+    }
+    return queryParams;
+  }
 }

src/app/item-page/full/full-item-page.component.html

@@ -7,10 +7,8 @@
       <div *ngIf="!item.isWithdrawn || (isAdmin$|async)" class="full-item-info">
         <div class="d-flex flex-row">
           <ds-item-page-title-field class="mr-auto" [item]="item"></ds-item-page-title-field>
-          <div class="pl-2 space-children-mr">
-            <ds-dso-page-edit-button [pageRoute]="itemPageRoute$ | async" [dso]="item"
-                                     [tooltipMsg]="'item.page.edit'"></ds-dso-page-edit-button>
-          </div>
+        <ds-dso-edit-menu></ds-dso-edit-menu>
+
         </div>
         <div class="simple-view-link my-3" *ngIf="!fromSubmissionObject">
           <a class="btn btn-outline-primary" [routerLink]="[(itemPageRoute$ | async)]">

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

@@ -18,6 +18,7 @@ import { BitstreamRequestACopyPageComponent } from './bitstreams/request-a-copy/
 import { REQUEST_COPY_MODULE_PATH } from '../app-routing-paths';
 import { OrcidPageComponent } from './orcid-page/orcid-page.component';
 import { OrcidPageGuard } from './orcid-page/orcid-page.guard';
+import { DSOEditMenuResolver } from '../shared/dso-page/dso-edit-menu.resolver';
 
 @NgModule({
   imports: [
@@ -26,7 +27,8 @@ import { OrcidPageGuard } from './orcid-page/orcid-page.guard';
         path: ':id',
         resolve: {
           dso: ItemPageResolver,
-          breadcrumb: ItemBreadcrumbResolver
+          breadcrumb: ItemBreadcrumbResolver,
+          menu: DSOEditMenuResolver
         },
         runGuardsAndResolvers: 'always',
         children: [

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

@@ -39,7 +39,6 @@ import { MediaViewerImageComponent } from './media-viewer/media-viewer-image/med
 import { NgxGalleryModule } from '@kolkov/ngx-gallery';
 import { MiradorViewerComponent } from './mirador-viewer/mirador-viewer.component';
 import { VersionPageComponent } from './version-page/version-page/version-page.component';
-import { VersionedItemComponent } from './simple/item-types/versioned-item/versioned-item.component';
 import { ThemedFileSectionComponent } from './simple/field-components/file-section/themed-file-section.component';
 import { OrcidAuthComponent } from './orcid-page/orcid-auth/orcid-auth.component';
 import { OrcidPageComponent } from './orcid-page/orcid-page.component';
@@ -53,6 +52,7 @@ import { ItemVersionsModule } from './versions/item-versions.module';
 import { BitstreamRequestACopyPageComponent } from './bitstreams/request-a-copy/bitstream-request-a-copy-page.component';
 import { FileSectionComponent } from './simple/field-components/file-section/file-section.component';
 import { ItemSharedModule } from './item-shared.module';
+import { DsoPageModule } from '../shared/dso-page/dso-page.module';
 
 
 const ENTRY_COMPONENTS = [
@@ -91,7 +91,6 @@ const DECLARATIONS = [
   OrcidSyncSettingsComponent,
   OrcidQueueComponent,
   ItemAlertsComponent,
-  VersionedItemComponent,
   BitstreamRequestACopyPageComponent,
 ];
 
@@ -109,7 +108,8 @@ const DECLARATIONS = [
     NgxGalleryModule,
     NgbAccordionModule,
     ResultsBackButtonModule,
-    UploadModule
+    UploadModule,
+    DsoPageModule,
   ],
   declarations: [
     ...DECLARATIONS,

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

@@ -10,16 +10,14 @@ import { TabbedRelatedEntitiesSearchComponent } from './simple/related-entities/
 import { ItemVersionsDeleteModalComponent } from './versions/item-versions-delete-modal/item-versions-delete-modal.component';
 import { ItemVersionsSummaryModalComponent } from './versions/item-versions-summary-modal/item-versions-summary-modal.component';
 import { MetadataValuesComponent } from './field-components/metadata-values/metadata-values.component';
-import { DsoPageVersionButtonComponent } from '../shared/dso-page/dso-page-version-button/dso-page-version-button.component';
-import { PersonPageClaimButtonComponent } from '../shared/dso-page/person-page-claim-button/person-page-claim-button.component';
 import { GenericItemPageFieldComponent } from './simple/field-components/specific-field/generic/generic-item-page-field.component';
 import { MetadataRepresentationListComponent } from './simple/metadata-representation-list/metadata-representation-list.component';
 import { RelatedItemsComponent } from './simple/related-items/related-items-component';
-import { DsoPageOrcidButtonComponent } from '../shared/dso-page/dso-page-orcid-button/dso-page-orcid-button.component';
 
 const ENTRY_COMPONENTS = [
   ItemVersionsDeleteModalComponent,
   ItemVersionsSummaryModalComponent,
+
 ];
 
 const COMPONENTS = [
@@ -27,12 +25,9 @@ const COMPONENTS = [
   RelatedEntitiesSearchComponent,
   TabbedRelatedEntitiesSearchComponent,
   MetadataValuesComponent,
-  DsoPageVersionButtonComponent,
-  PersonPageClaimButtonComponent,
   GenericItemPageFieldComponent,
   MetadataRepresentationListComponent,
   RelatedItemsComponent,
-  DsoPageOrcidButtonComponent
 ];
 
 @NgModule({

src/app/item-page/simple/field-components/specific-field/abstract/item-page-abstract-field.component.spec.ts

@@ -7,6 +7,8 @@ import { SharedModule } from '../../../../../shared/shared.module';
 import { APP_CONFIG } from '../../../../../../config/app-config.interface';
 import { environment } from '../../../../../../environments/environment';
 import { By } from '@angular/platform-browser';
+import { BrowseDefinitionDataService } from '../../../../../core/browse/browse-definition-data.service';
+import { BrowseDefinitionDataServiceStub } from '../../../../../shared/testing/browse-definition-data-service.stub';
 
 let comp: ItemPageAbstractFieldComponent;
 let fixture: ComponentFixture<ItemPageAbstractFieldComponent>;
@@ -25,6 +27,7 @@ describe('ItemPageAbstractFieldComponent', () => {
       ],
       providers: [
         { provide: APP_CONFIG, useValue: environment },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
       declarations: [ItemPageAbstractFieldComponent],
       schemas: [NO_ERRORS_SCHEMA]

src/app/item-page/simple/field-components/specific-field/author/item-page-author-field.component.spec.ts

@@ -3,10 +3,12 @@ import { ChangeDetectionStrategy, NO_ERRORS_SCHEMA } from '@angular/core';
 import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 import { TranslateLoaderMock } from '../../../../../shared/testing/translate-loader.mock';
 import { MetadataValuesComponent } from '../../../../field-components/metadata-values/metadata-values.component';
-import { mockItemWithMetadataFieldAndValue } from '../item-page-field.component.spec';
+import { mockItemWithMetadataFieldsAndValue } from '../item-page-field.component.spec';
 import { ItemPageAuthorFieldComponent } from './item-page-author-field.component';
 import { APP_CONFIG } from '../../../../../../config/app-config.interface';
 import { environment } from '../../../../../../environments/environment';
+import { BrowseDefinitionDataService } from '../../../../../core/browse/browse-definition-data.service';
+import { BrowseDefinitionDataServiceStub } from '../../../../../shared/testing/browse-definition-data-service.stub';
 
 let comp: ItemPageAuthorFieldComponent;
 let fixture: ComponentFixture<ItemPageAuthorFieldComponent>;
@@ -25,6 +27,7 @@ describe('ItemPageAuthorFieldComponent', () => {
       })],
       providers: [
         { provide: APP_CONFIG, useValue: environment },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
       declarations: [ItemPageAuthorFieldComponent, MetadataValuesComponent],
       schemas: [NO_ERRORS_SCHEMA]
@@ -37,7 +40,7 @@ describe('ItemPageAuthorFieldComponent', () => {
     beforeEach(waitForAsync(() => {
       fixture = TestBed.createComponent(ItemPageAuthorFieldComponent);
       comp = fixture.componentInstance;
-      comp.item = mockItemWithMetadataFieldAndValue(field, mockValue);
+      comp.item = mockItemWithMetadataFieldsAndValue([field], mockValue);
       fixture.detectChanges();
     }));
 

src/app/item-page/simple/field-components/specific-field/date/item-page-date-field.component.spec.ts

@@ -3,10 +3,12 @@ import { ChangeDetectionStrategy, NO_ERRORS_SCHEMA } from '@angular/core';
 import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 import { TranslateLoaderMock } from '../../../../../shared/testing/translate-loader.mock';
 import { MetadataValuesComponent } from '../../../../field-components/metadata-values/metadata-values.component';
-import { mockItemWithMetadataFieldAndValue } from '../item-page-field.component.spec';
+import { mockItemWithMetadataFieldsAndValue } from '../item-page-field.component.spec';
 import { ItemPageDateFieldComponent } from './item-page-date-field.component';
 import { APP_CONFIG } from '../../../../../../config/app-config.interface';
 import { environment } from '../../../../../../environments/environment';
+import { BrowseDefinitionDataService } from '../../../../../core/browse/browse-definition-data.service';
+import { BrowseDefinitionDataServiceStub } from '../../../../../shared/testing/browse-definition-data-service.stub';
 
 let comp: ItemPageDateFieldComponent;
 let fixture: ComponentFixture<ItemPageDateFieldComponent>;
@@ -25,6 +27,7 @@ describe('ItemPageDateFieldComponent', () => {
       })],
       providers: [
         { provide: APP_CONFIG, useValue: environment },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
       declarations: [ItemPageDateFieldComponent, MetadataValuesComponent],
       schemas: [NO_ERRORS_SCHEMA]
@@ -36,7 +39,7 @@ describe('ItemPageDateFieldComponent', () => {
   beforeEach(waitForAsync(() => {
     fixture = TestBed.createComponent(ItemPageDateFieldComponent);
     comp = fixture.componentInstance;
-    comp.item = mockItemWithMetadataFieldAndValue(mockField, mockValue);
+    comp.item = mockItemWithMetadataFieldsAndValue([mockField], mockValue);
     fixture.detectChanges();
   }));
 

src/app/item-page/simple/field-components/specific-field/generic/generic-item-page-field.component.spec.ts

@@ -3,10 +3,12 @@ import { ChangeDetectionStrategy, NO_ERRORS_SCHEMA } from '@angular/core';
 import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 import { TranslateLoaderMock } from '../../../../../shared/testing/translate-loader.mock';
 import { MetadataValuesComponent } from '../../../../field-components/metadata-values/metadata-values.component';
-import { mockItemWithMetadataFieldAndValue } from '../item-page-field.component.spec';
+import { mockItemWithMetadataFieldsAndValue } from '../item-page-field.component.spec';
 import { GenericItemPageFieldComponent } from './generic-item-page-field.component';
 import { APP_CONFIG } from '../../../../../../config/app-config.interface';
 import { environment } from '../../../../../../environments/environment';
+import { BrowseDefinitionDataService } from '../../../../../core/browse/browse-definition-data.service';
+import { BrowseDefinitionDataServiceStub } from '../../../../../shared/testing/browse-definition-data-service.stub';
 
 let comp: GenericItemPageFieldComponent;
 let fixture: ComponentFixture<GenericItemPageFieldComponent>;
@@ -27,6 +29,7 @@ describe('GenericItemPageFieldComponent', () => {
       })],
       providers: [
         { provide: APP_CONFIG, useValue: environment },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
       declarations: [GenericItemPageFieldComponent, MetadataValuesComponent],
       schemas: [NO_ERRORS_SCHEMA]
@@ -38,7 +41,7 @@ describe('GenericItemPageFieldComponent', () => {
   beforeEach(waitForAsync(() => {
     fixture = TestBed.createComponent(GenericItemPageFieldComponent);
     comp = fixture.componentInstance;
-    comp.item = mockItemWithMetadataFieldAndValue(mockField, mockValue);
+    comp.item = mockItemWithMetadataFieldsAndValue([mockField], mockValue);
     comp.fields = mockFields;
     comp.label = mockLabel;
     fixture.detectChanges();

src/app/item-page/simple/field-components/specific-field/generic/generic-item-page-field.component.ts

@@ -40,5 +40,10 @@ export class GenericItemPageFieldComponent extends ItemPageFieldComponent {
    */
   @Input() enableMarkdown = false;
 
+  /**
+   * Whether any valid HTTP(S) URL should be rendered as a link
+   */
+  @Input() urlRegex?: string;
+
 
 }

src/app/item-page/simple/field-components/specific-field/item-page-field.component.html

@@ -4,5 +4,7 @@
     [separator]="separator"
     [label]="label"
     [enableMarkdown]="enableMarkdown"
+    [urlRegex]="urlRegex"
+    [browseDefinition]="browseDefinition|async"
   ></ds-metadata-values>
 </div>

src/app/item-page/simple/field-components/specific-field/item-page-field.component.spec.ts

@@ -12,6 +12,10 @@ import { environment } from '../../../../../environments/environment';
 import { MarkdownPipe } from '../../../../shared/utils/markdown.pipe';
 import { SharedModule } from '../../../../shared/shared.module';
 import { APP_CONFIG } from '../../../../../config/app-config.interface';
+import { By } from '@angular/platform-browser';
+import { BrowseDefinitionDataService } from '../../../../core/browse/browse-definition-data.service';
+import { BrowseDefinitionDataServiceStub } from '../../../../shared/testing/browse-definition-data-service.stub';
+import { RouterTestingModule } from '@angular/router/testing';
 
 let comp: ItemPageFieldComponent;
 let fixture: ComponentFixture<ItemPageFieldComponent>;
@@ -20,7 +24,9 @@ let markdownSpy;
 const mockValue = 'test value';
 const mockField = 'dc.test';
 const mockLabel = 'test label';
-const mockFields = [mockField];
+const mockAuthorField = 'dc.contributor.author';
+const mockDateIssuedField = 'dc.date.issued';
+const mockFields = [mockField, mockAuthorField, mockDateIssuedField];
 
 describe('ItemPageFieldComponent', () => {
 
@@ -34,6 +40,7 @@ describe('ItemPageFieldComponent', () => {
   const buildTestEnvironment = async () => {
     await TestBed.configureTestingModule({
       imports: [
+        RouterTestingModule.withRoutes([]),
         TranslateModule.forRoot({
           loader: {
             provide: TranslateLoader,
@@ -44,6 +51,7 @@ describe('ItemPageFieldComponent', () => {
       ],
       providers: [
         { provide: APP_CONFIG, useValue: appConfig },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
       declarations: [ItemPageFieldComponent, MetadataValuesComponent],
       schemas: [NO_ERRORS_SCHEMA]
@@ -53,7 +61,7 @@ describe('ItemPageFieldComponent', () => {
     markdownSpy = spyOn(MarkdownPipe.prototype, 'transform');
     fixture = TestBed.createComponent(ItemPageFieldComponent);
     comp = fixture.componentInstance;
-    comp.item = mockItemWithMetadataFieldAndValue(mockField, mockValue);
+    comp.item = mockItemWithMetadataFieldsAndValue(mockFields, mockValue);
     comp.fields = mockFields;
     comp.label = mockLabel;
     fixture.detectChanges();
@@ -126,17 +134,57 @@ describe('ItemPageFieldComponent', () => {
         expect(markdownSpy).toHaveBeenCalled();
       });
     });
+
   });
+
+  describe('test rendering of configured browse links', () => {
+    beforeEach(() => {
+      fixture.detectChanges();
+    });
+    waitForAsync(() => {
+      it('should have a browse link', () => {
+        expect(fixture.debugElement.query(By.css('a.ds-browse-link')).nativeElement.innerHTML).toContain(mockValue);
+      });
+    });
+  });
+
+  describe('test rendering of configured regex-based links', () => {
+    beforeEach(() => {
+      comp.urlRegex = '^test';
+      fixture.detectChanges();
+    });
+    waitForAsync(() => {
+      it('should have a rendered (non-browse) link since the value matches ^test', () => {
+        expect(fixture.debugElement.query(By.css('a.ds-simple-metadata-link')).nativeElement.innerHTML).toContain(mockValue);
+      });
+    });
+  });
+
+  describe('test skipping of configured links that do NOT match regex', () => {
+    beforeEach(() => {
+      comp.urlRegex = '^nope';
+      fixture.detectChanges();
+    });
+    beforeEach(waitForAsync(() => {
+      it('should NOT have a rendered (non-browse) link since the value matches ^test', () => {
+        expect(fixture.debugElement.query(By.css('a.ds-simple-metadata-link'))).toBeNull();
+      });
+    }));
+  });
+
+
 });
 
-export function mockItemWithMetadataFieldAndValue(field: string, value: string): Item {
+export function mockItemWithMetadataFieldsAndValue(fields: string[], value: string): Item {
   const item = Object.assign(new Item(), {
     bundles: createSuccessfulRemoteDataObject$(createPaginatedList([])),
     metadata: new MetadataMap()
   });
-  item.metadata[field] = [{
-    language: 'en_US',
-    value: value
-  }] as MetadataValue[];
+  fields.forEach((field: string) => {
+    item.metadata[field] = [{
+      language: 'en_US',
+      value: value
+    }] as MetadataValue[];
+  });
   return item;
 }

src/app/item-page/simple/field-components/specific-field/item-page-field.component.ts

@@ -1,5 +1,10 @@
 import { Component, Input } from '@angular/core';
 import { Item } from '../../../../core/shared/item.model';
+import { map } from 'rxjs/operators';
+import { Observable } from 'rxjs';
+import { BrowseDefinition } from '../../../../core/shared/browse-definition.model';
+import { BrowseDefinitionDataService } from '../../../../core/browse/browse-definition-data.service';
+import { getRemoteDataPayload } from '../../../../core/shared/operators';
 
 /**
  * This component can be used to represent metadata on a simple item page.
@@ -12,6 +17,9 @@ import { Item } from '../../../../core/shared/item.model';
 })
 export class ItemPageFieldComponent {
 
+    constructor(protected browseDefinitionDataService: BrowseDefinitionDataService) {
+    }
+
     /**
      * The item to display metadata for
      */
@@ -38,4 +46,19 @@ export class ItemPageFieldComponent {
      */
     separator = '<br/>';
 
+    /**
+     * Whether any valid HTTP(S) URL should be rendered as a link
+     */
+    urlRegex?: string;
+
+    /**
+     * Return browse definition that matches any field used in this component if it is configured as a browse
+     * link in dspace.cfg (webui.browse.link.<n>)
+     */
+    get browseDefinition(): Observable<BrowseDefinition> {
+      return this.browseDefinitionDataService.findByFields(this.fields).pipe(
+        getRemoteDataPayload(),
+        map((def) => def)
+      );
+    }
 }

src/app/item-page/simple/field-components/specific-field/title/item-page-title-field.component.spec.ts

@@ -3,7 +3,7 @@ import { ChangeDetectionStrategy, NO_ERRORS_SCHEMA } from '@angular/core';
 import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 import { TranslateLoaderMock } from '../../../../../shared/testing/translate-loader.mock';
 import { MetadataValuesComponent } from '../../../../field-components/metadata-values/metadata-values.component';
-import { mockItemWithMetadataFieldAndValue } from '../item-page-field.component.spec';
+import { mockItemWithMetadataFieldsAndValue } from '../item-page-field.component.spec';
 import { ItemPageTitleFieldComponent } from './item-page-title-field.component';
 
 let comp: ItemPageTitleFieldComponent;
@@ -31,7 +31,7 @@ describe('ItemPageTitleFieldComponent', () => {
   beforeEach(waitForAsync(() => {
     fixture = TestBed.createComponent(ItemPageTitleFieldComponent);
     comp = fixture.componentInstance;
-    comp.item = mockItemWithMetadataFieldAndValue(mockField, mockValue);
+    comp.item = mockItemWithMetadataFieldsAndValue([mockField], mockValue);
     fixture.detectChanges();
   }));
 

src/app/item-page/simple/field-components/specific-field/uri/item-page-uri-field.component.spec.ts

@@ -2,11 +2,13 @@ import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
 import { ChangeDetectionStrategy, NO_ERRORS_SCHEMA } from '@angular/core';
 import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
 import { TranslateLoaderMock } from '../../../../../shared/testing/translate-loader.mock';
-import { mockItemWithMetadataFieldAndValue } from '../item-page-field.component.spec';
+import { mockItemWithMetadataFieldsAndValue } from '../item-page-field.component.spec';
 import { ItemPageUriFieldComponent } from './item-page-uri-field.component';
 import { MetadataUriValuesComponent } from '../../../../field-components/metadata-uri-values/metadata-uri-values.component';
 import { environment } from '../../../../../../environments/environment';
 import { APP_CONFIG } from '../../../../../../config/app-config.interface';
+import { BrowseDefinitionDataService } from '../../../../../core/browse/browse-definition-data.service';
+import { BrowseDefinitionDataServiceStub } from '../../../../../shared/testing/browse-definition-data-service.stub';
 
 let comp: ItemPageUriFieldComponent;
 let fixture: ComponentFixture<ItemPageUriFieldComponent>;
@@ -26,6 +28,7 @@ describe('ItemPageUriFieldComponent', () => {
       })],
       providers: [
         { provide: APP_CONFIG, useValue: environment },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub }
       ],
       declarations: [ItemPageUriFieldComponent, MetadataUriValuesComponent],
       schemas: [NO_ERRORS_SCHEMA]
@@ -37,7 +40,7 @@ describe('ItemPageUriFieldComponent', () => {
   beforeEach(waitForAsync(() => {
     fixture = TestBed.createComponent(ItemPageUriFieldComponent);
     comp = fixture.componentInstance;
-    comp.item = mockItemWithMetadataFieldAndValue(mockField, mockValue);
+    comp.item = mockItemWithMetadataFieldsAndValue([mockField], mockValue);
     comp.fields = [mockField];
     comp.label = mockLabel;
     fixture.detectChanges();

src/app/item-page/simple/item-types/publication/publication.component.html

@@ -11,12 +11,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'publication.page.edit'"></ds-dso-page-edit-button>
-  </div>
+    <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/item-page/simple/item-types/publication/publication.component.spec.ts

@@ -36,6 +36,10 @@ import { VersionDataService } from '../../../../core/data/version-data.service';
 import { RouterTestingModule } from '@angular/router/testing';
 import { WorkspaceitemDataService } from '../../../../core/submission/workspaceitem-data.service';
 import { SearchService } from '../../../../core/shared/search/search.service';
+import { BrowseDefinitionDataService } from '../../../../core/browse/browse-definition-data.service';
+import {
+  BrowseDefinitionDataServiceStub
+} from '../../../../shared/testing/browse-definition-data-service.stub';
 
 const noMetadata = new MetadataMap();
 
@@ -87,7 +91,8 @@ describe('PublicationComponent', () => {
         { provide: BitstreamDataService, useValue: mockBitstreamDataService },
         { provide: WorkspaceitemDataService, useValue: {} },
         { provide: SearchService, useValue: {} },
-        { provide: RouteService, useValue: mockRouteService }
+        { provide: RouteService, useValue: mockRouteService },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub },
       ],
 
       schemas: [NO_ERRORS_SCHEMA]

src/app/item-page/simple/item-types/publication/publication.component.ts

@@ -1,7 +1,7 @@
 import { ChangeDetectionStrategy, Component } from '@angular/core';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../versioned-item/versioned-item.component';
+import { ItemComponent } from '../shared/item.component';
 
 /**
  * Component that represents a publication Item page
@@ -14,6 +14,6 @@ import { VersionedItemComponent } from '../versioned-item/versioned-item.compone
   templateUrl: './publication.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class PublicationComponent extends VersionedItemComponent {
+export class PublicationComponent extends ItemComponent {
 
 }

src/app/item-page/simple/item-types/shared/item.component.spec.ts

@@ -23,7 +23,9 @@ import { UUIDService } from '../../../../core/shared/uuid.service';
 import { isNotEmpty } from '../../../../shared/empty.util';
 import { TranslateLoaderMock } from '../../../../shared/mocks/translate-loader.mock';
 import { NotificationsService } from '../../../../shared/notifications/notifications.service';
-import { createSuccessfulRemoteDataObject$ } from '../../../../shared/remote-data.utils';
+import {
+  createSuccessfulRemoteDataObject$
+} from '../../../../shared/remote-data.utils';
 import { TruncatableService } from '../../../../shared/truncatable/truncatable.service';
 import { TruncatePipe } from '../../../../shared/utils/truncate.pipe';
 import { GenericItemPageFieldComponent } from '../../field-components/specific-field/generic/generic-item-page-field.component';
@@ -38,6 +40,10 @@ import { VersionHistoryDataService } from '../../../../core/data/version-history
 import { RouterTestingModule } from '@angular/router/testing';
 import { AuthorizationDataService } from '../../../../core/data/feature-authorization/authorization-data.service';
 import { ResearcherProfileDataService } from '../../../../core/profile/researcher-profile-data.service';
+import { BrowseDefinitionDataService } from '../../../../core/browse/browse-definition-data.service';
+import {
+  BrowseDefinitionDataServiceStub
+} from '../../../../shared/testing/browse-definition-data-service.stub';
 
 import { buildPaginatedList } from '../../../../core/data/paginated-list.model';
 import { PageInfo } from '../../../../core/shared/page-info.model';
@@ -125,7 +131,8 @@ export function getItemPageFieldsTest(mockItem: Item, component) {
           { provide: SearchService, useValue: {} },
           { provide: RouteService, useValue: mockRouteService },
           { provide: AuthorizationDataService, useValue: authorizationService },
-          { provide: ResearcherProfileDataService, useValue: {} }
+          { provide: ResearcherProfileDataService, useValue: {} },
+          { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub },
         ],
 
         schemas: [NO_ERRORS_SCHEMA]
@@ -444,7 +451,7 @@ describe('ItemComponent', () => {
           { provide: SearchService, useValue: {} },
           { provide: RouteService, useValue: mockRouteService },
           { provide: AuthorizationDataService, useValue: {} },
-          { provide: ResearcherProfileDataService, useValue: {} }
+          { provide: ResearcherProfileDataService, useValue: {} },
         ],
         schemas: [NO_ERRORS_SCHEMA]
       }).overrideComponent(ItemComponent, {

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.html

@@ -12,12 +12,7 @@
 <div class="d-flex flex-row">
   <ds-item-page-title-field [item]="object" class="mr-auto">
   </ds-item-page-title-field>
-  <div class="pl-2 space-children-mr">
-    <ds-dso-page-version-button (newVersionEvent)="onCreateNewVersion()" [dso]="object"
-                                [tooltipMsgCreate]="'item.page.version.create'"
-                                [tooltipMsgHasDraft]="'item.page.version.hasDraft'"></ds-dso-page-version-button>
-    <ds-dso-page-edit-button [pageRoute]="itemPageRoute" [dso]="object" [tooltipMsg]="'item.page.edit'"></ds-dso-page-edit-button>
-  </div>
+  <ds-dso-edit-menu></ds-dso-edit-menu>
 </div>
 <div class="row">
   <div class="col-xs-12 col-md-4">

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.spec.ts

@@ -37,6 +37,10 @@ import { RouterTestingModule } from '@angular/router/testing';
 import { WorkspaceitemDataService } from '../../../../core/submission/workspaceitem-data.service';
 import { SearchService } from '../../../../core/shared/search/search.service';
 import { ItemVersionsSharedService } from '../../../versions/item-versions-shared.service';
+import { BrowseDefinitionDataService } from '../../../../core/browse/browse-definition-data.service';
+import {
+  BrowseDefinitionDataServiceStub
+} from '../../../../shared/testing/browse-definition-data-service.stub';
 
 const noMetadata = new MetadataMap();
 
@@ -90,7 +94,8 @@ describe('UntypedItemComponent', () => {
         { provide: SearchService, useValue: {} },
         { provide: ItemDataService, useValue: {} },
         { provide: ItemVersionsSharedService, useValue: {} },
-        { provide: RouteService, useValue: mockRouteService }
+        { provide: RouteService, useValue: mockRouteService },
+        { provide: BrowseDefinitionDataService, useValue: BrowseDefinitionDataServiceStub },
       ],
       schemas: [NO_ERRORS_SCHEMA]
     }).overrideComponent(UntypedItemComponent, {

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.ts

@@ -2,7 +2,7 @@ import { ChangeDetectionStrategy, Component } from '@angular/core';
 import { Item } from '../../../../core/shared/item.model';
 import { ViewMode } from '../../../../core/shared/view-mode.model';
 import { listableObjectComponent } from '../../../../shared/object-collection/shared/listable-object/listable-object.decorator';
-import { VersionedItemComponent } from '../versioned-item/versioned-item.component';
+import { ItemComponent } from '../shared/item.component';
 
 /**
  * Component that represents a publication Item page
@@ -15,6 +15,6 @@ import { VersionedItemComponent } from '../versioned-item/versioned-item.compone
   templateUrl: './untyped-item.component.html',
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class UntypedItemComponent extends VersionedItemComponent {
+export class UntypedItemComponent extends ItemComponent {
 
 }