treetableview

I am currently getting an error that I do not understand. The exception that is thrown points to nothing in my code, yet it is only thrown after I repopulate a TreeTableView by clearing the root item's children and adding a new set och children to it. This is the exception: Exception in thread "JavaFX Application Thread" java.lang.NullPointerException at javafx.scene.control.TreeTableView$TreeTableViewArrayListSelectionModel.handleSelectedCellsListChangeEvent(TreeTableView.java:3056) at javafx.scene.control.TreeTableView$TreeTableViewArrayListSelectionModel.clearAndSelect(TreeTableView.java

Can anyone please suggest me how to implement filtering for a TreeTableView component? I am using jdk 1.8.20 The example below demonstrates a TreeTableView with three columns and a filter box. Filtering is achieved by creating a new hierarchy of TreeItems. If any of child item matches all its parent items are shown as well (to preserve the tree structure). import java.util.HashMap; import java.util.Map; import javafx.animation.KeyFrame; import javafx.application.Application; import javafx.beans.InvalidationListener; import javafx.beans.Observable; import javafx.beans.binding.ListBinding;

I want to have control over the styling of some rows of a TreeTableView based on the level in the tree. I used setRowFactory and apply a styling if this row is part of the first level children of the root of the Table. The styling works fine, but I also want to disable clicking on the checkbox for those rows. I am able to setDisable(true) but that also disables the expanding of the TreeItem and SetEditable(false) does not seem to have any effect. EDIT : What I understand is that the Table must be set editable, then the columns are by default editable. But if I set TreeTableRow.setEditable(true

Let's say i have 2 columns in a TreeTableView and now i want to add a string/Label in the first column and a ProgressBar in the other one. How would i accomplish something like this? Really appreciate any help! As correctly pointed out by James_D, you can use ProgressBarTreeTableCell for a column with ProgressBars. There is internal supports for some other UI controls such as TextField , CheckBox etc. For other UI controls you can create a Custom TreeTableCell as shown: private class ProgressCell extends TreeTableCell<Employee, String> { final ProgressBar progress = new ProgressBar();

Is there any simple approach to let the TreeTableView (or TableView) try to commit values on focus lost? Unfortunatly I didn't succed with any default-implementations of javafx TableCellFactories, which is why I tried my own TreeTableCell implementations and also some different tableCell implementations like the one from Graham Smith , which seemed the most straight forward, since it already implemented a hook for focus lost, but nevertheless the value is never committed and the userchanges are resetted to the original value. My guess is, whenever focus is lost, the editingProperty of the