Slots

childrenSource

virtual Obj[]? children(Obj node)

Get the children of the specified node. If no children return null or the empty list. Default returns null.

hasChildrenSource

virtual Bool hasChildren(Obj node)

Return if this has or might have children. This is an optimization to display an expansion control without actually loading all the children. The default returns !children.isEmpty.

imageSource

virtual Image? image(Obj node)

Get the image to display for specified node or null.

rootsSource

abstract Obj[] roots()

Get root nodes.

textSource

virtual Str text(Obj node)

Get the text to display for specified node. Default is node.toStr.