Make item count for dropdown selector configurable.

src/Squidex/Areas/Api/Controllers/UI/MyUIOptions.cs

@@ -17,6 +17,8 @@ namespace Squidex.Areas.Api.Controllers.UI
 
         public MapOptions Map { get; set; }
 
+        public int ReferencesDropdownItemCount { get; set; } = 100;
+
         public bool ShowInfo { get; set; }
 
         public bool HideNews { get; set; }

src/Squidex/app/shared/components/references-dropdown.component.ts

@@ -20,7 +20,8 @@ import {
     SchemaDetailsDto,
     SchemasService,
     StatefulControlComponent,
-    Types
+    Types,
+    UIOptions
 } from '@app/shared/internal';
 
 export const SQX_REFERENCES_DROPDOWN_CONTROL_VALUE_ACCESSOR: any = {
@@ -57,6 +58,7 @@ const NO_EMIT = { emitEvent: false };
 export class ReferencesDropdownComponent extends StatefulControlComponent<State, string[] | string> implements OnInit {
     private languageField: AppLanguageDto;
     private selectedId: string | undefined;
+    private itemCount: number;
 
     @Input()
     public schemaId: string;
@@ -73,7 +75,7 @@ export class ReferencesDropdownComponent extends StatefulControlComponent<State,
 
     public selectionControl = new FormControl('');
 
-    constructor(changeDetector: ChangeDetectorRef,
+    constructor(changeDetector: ChangeDetectorRef, uiOptions: UIOptions,
         private readonly appsState: AppsState,
         private readonly contentsService: ContentsService,
         private readonly schemasService: SchemasService
@@ -84,6 +86,8 @@ export class ReferencesDropdownComponent extends StatefulControlComponent<State,
             contentNames: []
         });
 
+        this.itemCount = uiOptions.get('referencesDropdownItemCount');
+
         this.own(
             this.selectionControl.valueChanges
                 .subscribe((value: ContentName) => {
@@ -116,7 +120,7 @@ export class ReferencesDropdownComponent extends StatefulControlComponent<State,
         this.schemasService.getSchema(this.appsState.appName, this.schemaId).pipe(
                 switchMap(schema => {
                     if (schema) {
-                        return this.contentsService.getContents(this.appsState.appName, this.schemaId, 100, 0);
+                        return this.contentsService.getContents(this.appsState.appName, this.schemaId, this.itemCount, 0);
                     } else {
                         return throwError('Invalid schema');
                     }

src/Squidex/appsettings.json

@@ -96,7 +96,11 @@
     /*
      * Show the exposed values as information on the apps overview page.
      */
-    "showInfo": false
+    "showInfo": false,
+    /*
+     * The number of content items for dropdown selector.
+     */
+    "referencesDropdownItemCount": 100
   },
 
   "email": {