-import { VideoChannelService } from '@app/shared/video-channel/video-channel.service'
-import { concatMap, map, switchMap, tap } from 'rxjs/operators'
-import { from, Subject, Subscription } from 'rxjs'
+import { ScreenService } from '@app/shared/misc/screen.service'
+import { ComponentPagination, hasMoreItems } from '@app/shared/rest/component-pagination.model'