It should be possible to skip some elements on the collection binding

[pjasiun]

It would be a nice feature if I could skip some elements on binding collection:

itemsControllerCollection.bind( modelItems ).as( ( modelItem ) => {
    if ( modelItem.hidden ) {
        return null;
    } else {
        const itemView = new ItemView( editor.locale );
        return new Controller( modelItem, itemView );
    }
} );

It should be doable, even with a nice position mapping.

[pjasiun]

During moving collection binding from the CollectionController to the ViewCollection this functionality has been removed.

[pjasiun]

Of course the sample code now should looks like:

viewCollection.bindTo( modelItems ).as( ( modelItem ) => {
    if ( modelItem.hidden ) {
        return null;
    } else {
        return new ItemView( editor.locale );
    }
} );

[oleq]

A related issue https://github.com/ckeditor/ckeditor5-ui/issues/98.

[pjasiun]

Also related: https://github.com/ckeditor/ckeditor5-utils/issues/125