Exposing all of configuration of ngx-treeview & ngx-dropdown-treeview
There is no option to disable ngx-treeview & ngx-dropdown-treeview but you can implement it easily with a Angular directive

Selected books: {{values}}

Configuration

hasAllCheckBox

hasFilter

hasCollapseExpand

decoupleChildFromParent

maxHeight

ngx-treeview

ngx-dropdown-treeview

Enable/disable

buttonClass