Add search and filter for vote delegation

Adds a new filter "Vote delegation" to user list:
Transferred vote right
Received vote reight
neither received not transferred vote right

Adjusts the user list search and the global search to include vote
deligations

client/src/app/shared/models/users/user.ts

@@ -47,6 +47,10 @@ export class User extends BaseDecimalModel<User> {
         return !!this.vote_delegated_to_id;
     }
 
+    public get hasVoteRightFromOthers(): boolean {
+        return this.vote_delegated_from_users_id?.length > 0;
+    }
+
     public constructor(input?: Partial<User>) {
         super(User.COLLECTIONSTRING, input);
     }

client/src/app/site/users/components/user-list/user-list.component.ts

@@ -147,7 +147,7 @@ export class UserListComponent extends BaseListViewComponent<ViewUser> implement
     /**
      * Define extra filter properties
      */
-    public filterProps = ['full_name', 'groups', 'structure_level', 'number'];
+    public filterProps = ['full_name', 'groups', 'structure_level', 'number', 'delegationName'];
 
     private selfPresentConfStr = 'users_allow_self_set_present';
 

client/src/app/site/users/models/view-user.ts

@@ -14,6 +14,12 @@ export interface UserTitleInformation {
     number?: string;
 }
 
+export enum DelegationType {
+    Transferred = 1,
+    Received,
+    Neither
+}
+
 export class ViewUser extends BaseProjectableViewModel<User> implements UserTitleInformation, Searchable {
     public static COLLECTIONSTRING = User.COLLECTIONSTRING;
 
@@ -45,6 +51,19 @@ export class ViewUser extends BaseProjectableViewModel<User> implements UserTitl
         }
     }
 
+    public get delegationName(): string | undefined {
+        return this.voteDelegatedTo?.getFullName();
+    }
+
+    public get delegationType(): DelegationType {
+        if (this.user.isVoteRightDelegated) {
+            return DelegationType.Transferred;
+        } else if (this.user.hasVoteRightFromOthers) {
+            return DelegationType.Received;
+        }
+        return DelegationType.Neither;
+    }
+
     // Will be set by the repository
     public getFullName: () => string;
     public getShortName: () => string;
@@ -61,7 +80,8 @@ export class ViewUser extends BaseProjectableViewModel<User> implements UserTitl
             { key: 'First name', value: this.first_name },
             { key: 'Last name', value: this.last_name },
             { key: 'Structure level', value: this.structure_level },
-            { key: 'Number', value: this.number }
+            { key: 'Number', value: this.number },
+            { key: 'Vote Delegation', value: this.delegationName }
         ];
         return { properties, searchValue: properties.map(property => property.value) };
     }

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

@@ -6,7 +6,7 @@ import { OpenSlidesStatusService } from 'app/core/core-services/openslides-statu
 import { StorageService } from 'app/core/core-services/storage.service';
 import { GroupRepositoryService } from 'app/core/repositories/users/group-repository.service';
 import { BaseFilterListService, OsFilter } from 'app/core/ui-services/base-filter-list.service';
-import { ViewUser } from '../models/view-user';
+import { DelegationType, ViewUser } from '../models/view-user';
 
 /**
  * Filter the user list
@@ -93,6 +93,18 @@ export class UserFilterListService extends BaseFilterListService<ViewUser> {
                     { condition: false, label: this.translate.instant('Has changed vote weight') },
                     { condition: true, label: this.translate.instant('Has unchanged vote weight') }
                 ]
+            },
+            {
+                property: 'delegationType',
+                label: this.translate.instant('Vote delegation'),
+                options: [
+                    { condition: DelegationType.Transferred, label: this.translate.instant('Transferred vote right') },
+                    { condition: DelegationType.Received, label: this.translate.instant('Received vote right') },
+                    {
+                        condition: DelegationType.Neither,
+                        label: this.translate.instant('Neither received nor transferred vote right')
+                    }
+                ]
             }
         ];
         return staticFilterOptions.concat(this.userGroupFilterOptions);