Tree refresh causes content to be truncated, v3.0

[Corionis]

When a JTree control is refreshed the content is truncated with trailing ellipses (...). The tree is in a JSplitPane that is significantly wider.

The previous version 2.4 worked correctly. Nothing else has changed.

FlatLaf 3.0 on Linux Mint latest running Java 8.

[DevCharly]

Hmm, don't have this effect here.
Could be related to commit b736502, which hides default node icons (closed and opened folders).

Did you set Tree.showDefaultIcons to true to show them after the update to FlatLaf 3.0?
Or is it a custom tree renderer?

Does it work if you add following?

UIManager.put( "Tree.showDefaultIcons", true );

[Corionis]

No, I had not set Tree.showDefaultIcons to true.
No, not a custom tree renderer, but a custom tree cell renderer.

Yes, it works after adding that line! Thank you!! (Gee, that was easy).

[DevCharly]

Still trying to understand why this happens...

No, not a custom tree renderer, but a custom tree cell renderer.

In which method do you set the icon in your renderer?

[Corionis]

It's done in:

public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus)

after calling super.getTreeCellRendererComponent(...)

[Corionis]

You can see the code on GitHub at: GrokeSoft/ELS Version 4.0.0 ELS/src/com/groksoft/els/gui/browser/NavTreeCellRenderer.java

[DevCharly]

Found the reason for this behavior. It is because you disable the tree while updating the table model (which is fine), but the custom tree cell renderer does not have a icon for disabled state. This results in too small nodes, which were not updated when re-enabling tree.

Fixed in latest 3.1-SNAPSHOT: https://github.com/JFormDesigner/FlatLaf#snapshots