Hide items and continue using drag and drop

[Stephan23]

I use an UncontrolledTreeEnvironment with lazy item-loading.

I would now like to be able to use a switch to change whether deleted items are displayed in the tree or not.

My first approach was to add an if (item.data.deleted) return <></> to the renderItem, but this destroys the drop position.

Is there a better way to hide items?

Thanks in advance for your help!

[Stephan23]

Duplicate of

Drag & drop doesn't work properly when an item is hidden

but I think the functionality would be a real enrichment.

Best regards

[lukasbach]

Are you using a custom tree data provider? You could implement the getTreeItem method in a way so that it filters the childrens array before returning to only include items that should be rendered. If something in which items should be rendered and which should not, make sure to call the listeners registered by onDidChangeTreeData to notify RCT about which parents now include items whose show/hide behavior has changed, and RCT will update accordingly.