On Fri, 9 Dec 2022 08:06:43 GMT, Prasanta Sadhukhan <psadhuk...@openjdk.org> wrote:
> In Swingset2 JInternalFrame demo, focusing on any internalframes and pressing > Ctrl+F7 and then any of up/down/left/arrow key to move the internal frames > results in NPE in NimbusL&F. > It is because `JComponent.processKeyBinding() `calls > `SwingUtilities.notifyAction` which calls > `BasicDesktopPaneUI.actionPerformed` where it gets > `Desktop.minOnScreenInsets` property to get the Insets and then uses > insets.top/bottom/left/right value to move the internalframe but this > property is not defined for Nimbus so deferencing Insets object results in > NPE. > > Fix is added to create a 0 insets incase some L&F do not define` > Desktop.minOnScreenInsets` property. > No regression test is added as it can be easily checked by SwingSet2 > JInternalFrame demo. It would be good to add a test case to make sure this bug will not happen someday again. ------------- PR: https://git.openjdk.org/jdk/pull/11605
