tornadofx-guide

5. Data Controls
val persons = listOf(
Person("Mary Hanes", "IT Administration", "mary.hanes@contoso.com", listOf(
Person("Jacob Mays", "IT Help Desk", "jacob.mays@contoso.com"),
Person("John Ramsy", "IT Help Desk", "john.ramsy@contoso.com"))),
Person("Erin James", "Human Resources", "erin.james@contoso.com", listOf(
Person("Erlick Foyes", "Customer Service", "erlick.foyes@contoso.com"),
Person("Steve Folley", "Customer Service", "steve.folley@contoso.com"),
Person("Larry Cable", "Customer Service", "larry.cable@contoso.com")))
).observable()
You can create a TreeTableView by merging the components needed for a TableView and
TreeView together. You will need to call the populate() function as well as set the root
TreeItem .
val treeTableView = TreeTableView().apply {
column("Name", Person::nameProperty)
column("Department", Person::departmentProperty)
column("Email", Person::emailProperty)
/// Create the root item that holds all top level employees
root = TreeItem(Person("Employees by leader", "", "", persons))
// Always return employees under the current person
populate { it.value.employees }
// Expand the two first levels
root.isExpanded = true
root.children.forEach { it.isExpanded = true }
}
// Resize to display all elements on the first two levels
resizeColumnsToFitContent()
It is also possible to work with more of an ad hoc backing store like a Map . That would look
something like this:
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