Why Tree items not support multiple selection in MVVM?

answered 2020-08-14 11:54:02 +0800

cor3000
6280 ● 2 ● 7

updated 2020-08-14 12:03:41 +0800

when using a TreeModel the model takes precedence over component properties. I assume you are using DefaultTreeModel, which implements the Selectable interface (including the Selectable.isMultiple() method). If that's the case then you simply have to call treeModel.setMultiple(true) in your viewModel and tree will enable multiple selection (handled by the TreeModel).

You can further remove the multiple="true" attribute in your zul code, since it's overridden by the TreeModel anyway.