Modifying playlist in dialog will now update the file manager automatically

src/app/dialogs/modify-playlist/modify-playlist.component.ts

@@ -14,6 +14,7 @@ export class ModifyPlaylistComponent implements OnInit {
   playlist = null;
   available_files = [];
   all_files = [];
+  playlist_updated = false;
 
   constructor(@Inject(MAT_DIALOG_DATA) public data: any,
               private postsService: PostsService,
@@ -46,6 +47,7 @@ export class ModifyPlaylistComponent implements OnInit {
 
   updatePlaylist() {
     this.postsService.updatePlaylist(this.playlist).subscribe(res => {
+      this.playlist_updated = true;
       this.postsService.openSnackBar('Playlist updated successfully.');
       this.getPlaylist();
     });

src/app/file-card/file-card.component.ts

@@ -88,6 +88,15 @@ export class FileCardComponent implements OnInit {
         width: '65vw'
       }
     });
+
+    dialogRef.afterClosed().subscribe(res => {
+      // updates playlist in file manager if it changed
+      if (dialogRef.componentInstance.playlist_updated) {
+        this.playlist = dialogRef.componentInstance.original_playlist;
+        this.title = this.playlist.name;
+        this.count = this.playlist.fileNames.length;
+      }
+    });
   }
 
   onImgError(event) {