On Fri, 28 Jun 2024 08:49:49 GMT, Prasanta Sadhukhan <psadhuk...@openjdk.org> wrote:
> Adding, then removing, and then adding a JFXPanel to the same component in > the Swing scene graph leads to a NullPointerException in GlassScene because > the sceneState is null. > Removing JFXPanel calls JFXPanel.removeNotify which calls Window.hide which > calls SceneHelper.disposePeer -> Scene.disposePeer -> EmbeddedScene.dispose > -> GlassScene.dispose which sets "sceneState" to null... > so when GlassScene.updateSceneState is called, it results in NPE. > Fix is to check if `host` (which is usually > javafx.embed.swing.JFXPanel$HostContainer for active JFXPanel) has been > reset/deleted which is done when `EmbeddedScene.dispose` is called during > removeNotify and abstain from updating the scene state Since this problem straddles two different toolkits, I would suggest to specify a minimum of 2 reviewers. ------------- PR Comment: https://git.openjdk.org/jfx/pull/1493#issuecomment-2197662517
