Fixed false visible items in the agenda

The fix has to be reworked with #4671 and can be eliminated with #4639

client/src/app/core/ui-services/base-filter-list.service.ts

@@ -50,7 +50,7 @@ export abstract class BaseFilterListService<V extends BaseViewModel> {
     /**
      * stores the currently used raw data to be used for the filter
      */
-    private currentRawData: V[];
+    protected currentRawData: V[];
 
     /**
      * The currently used filters.
@@ -110,7 +110,7 @@ export abstract class BaseFilterListService<V extends BaseViewModel> {
     /**
      * Constructor.
      */
-    public constructor(private store: StorageService, private repo: BaseRepository<V, BaseModel>) {}
+    public constructor(protected store: StorageService, protected repo: BaseRepository<V, BaseModel>) {}
 
     /**
      * Initializes the filterService. Returns the filtered data as Observable
@@ -192,7 +192,7 @@ export abstract class BaseFilterListService<V extends BaseViewModel> {
      * check their match with current definitions and set the current filter
      * @param definitions: Currently defined Filter definitions
      */
-    private loadStorageDefinition(definitions: OsFilter[]): void {
+    protected loadStorageDefinition(definitions: OsFilter[]): void {
         if (!definitions || !definitions.length) {
             return;
         }
@@ -250,7 +250,7 @@ export abstract class BaseFilterListService<V extends BaseViewModel> {
     /**
      * Takes an array of data and applies current filters
      */
-    private filterData(data: V[]): V[] {
+    protected filterData(data: V[]): V[] {
         const filteredData = [];
         if (!data) {
             return filteredData;

client/src/app/site/agenda/services/agenda-filter-list.service.ts

@@ -1,11 +1,14 @@
 import { Injectable } from '@angular/core';
 
+import { TranslateService } from '@ngx-translate/core';
+import { Observable } from 'rxjs';
+import { auditTime, map } from 'rxjs/operators';
+
 import { BaseFilterListService, OsFilter, OsFilterOption } from 'app/core/ui-services/base-filter-list.service';
 import { itemVisibilityChoices } from 'app/shared/models/agenda/item';
 import { ViewItem } from '../models/view-item';
 import { StorageService } from 'app/core/core-services/storage.service';
 import { ItemRepositoryService } from 'app/core/repositories/agenda/item-repository.service';
-import { TranslateService } from '@ngx-translate/core';
 
 @Injectable({
     providedIn: 'root'
@@ -41,6 +44,26 @@ export class AgendaFilterListService extends BaseFilterListService<ViewItem> {
         this.updateFilterDefinitions(this.filterOptions);
     }
 
+    /**
+     * @override from base filter list service: Added custom filtering of items
+     * Initializes the filterService. Returns the filtered data as Observable
+     */
+    public filter(): Observable<ViewItem[]> {
+        this.repo
+            .getViewModelListObservable()
+            .pipe(auditTime(10))
+            // Exclude items that are just there to provide a list of speakers. They have many
+            // restricted fields and must not be shown in the agenda!
+            .pipe(map(itemList => itemList.filter(item => item.type !== undefined)))
+            .subscribe(data => {
+                this.currentRawData = data;
+                this.filteredData = this.filterData(data);
+                this.filterDataOutput.next(this.filteredData);
+            });
+        this.loadStorageDefinition(this.filterDefinitions);
+        return this.filterDataOutput;
+    }
+
     private createVisibilityFilterOptions(): OsFilterOption[] {
         const options = [];
         itemVisibilityChoices.forEach(choice => {

client/src/app/site/base/list-view-base.ts

@@ -2,13 +2,13 @@ import { MatTableDataSource, MatTable, MatSort, MatPaginator, MatSnackBar, PageE
 import { Title } from '@angular/platform-browser';
 import { TranslateService } from '@ngx-translate/core';
 import { ViewChild, Type, OnDestroy } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
 
 import { BaseViewComponent } from './base-view';
 import { BaseViewModel } from './base-view-model';
 import { BaseSortListService } from 'app/core/ui-services/base-sort-list.service';
 import { BaseFilterListService } from 'app/core/ui-services/base-filter-list.service';
 import { BaseModel } from 'app/shared/models/base/base-model';
-import { ActivatedRoute } from '@angular/router';
 import { StorageService } from 'app/core/core-services/storage.service';
 
 export abstract class ListViewBaseComponent<V extends BaseViewModel, M extends BaseModel> extends BaseViewComponent