NPE in IntelliJ IDEA plugin at AbstractCreationDialog.java:71

[amaembo]

Hello, IntelliJ IDEA developer is here

Our user reported this exception that happened inside Vaadin Designer plugin:

java.lang.NullPointerException
	at com.vaadin.designer2.intellij.actions.AbstractCreationDialog.<init>(AbstractCreationDialog.java:71)
	at com.vaadin.designer2.intellij.actions.flow.CreateFlowDialog.<init>(CreateFlowDialog.java:73)
	at com.vaadin.designer2.intellij.actions.flow.CreateFlowAction.createDialog(CreateFlowAction.java:63)
	at com.vaadin.designer2.intellij.actions.AbstractCreationAction.showDialog(AbstractCreationAction.java:54)
	at com.vaadin.designer2.intellij.actions.AbstractCreationAction.showCreateDesignDialog(AbstractCreationAction.java:49)
	at com.vaadin.designer2.intellij.actions.flow.CreateFlowAction.actionPerformed(CreateFlowAction.java:57)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:281)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed$0(ActionMenuItem.java:309)
	at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:288)
	at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:77)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:298)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$0(ActionMenuItem.java:110)
	at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:95)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:110)
	at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:514)
	at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:544)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6652)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345)
	at java.desktop/java.awt.Component.processEvent(Component.java:6417)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5027)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2780)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:973)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:908)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:840)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:454)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:773)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:453)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:823)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:507)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

IDE, Designer and OS version

IntelliJ IDEA Ultimate 203.3645.34 (2020.3 EAP)
Vaadin Designer 4.5.12
OS: Windows 10.

That's all the information I have. Hope this helps.

[stale]

Hello there!

It looks like this issue hasn't progressed lately. There are so many issues that we just can't deal them all within a reasonable timeframe.

There are a few things you could help to get things rolling on this issue (this is an automated message, so expect that some of these are already in use):

• Check if the issue is still valid for the latest version. There are many duplicates in our issue tracker, so it is possible that the issue is already tackled.
• Provide more details how to reproduce the issue.
• Explain why it is important to get this issue fixed and politely draw others attention to it e.g. via the forum or social media.
• Add a reduced test case about the issue, so it is easier for somebody to start working on a solution.
• If the issue is clearly a bug, use the Warranty in your Vaadin subscription to raise its priority.

Thanks again for your contributions! Even though we haven't been able to get this issue fixed, we hope you to report your findings and enhancement ideas in the future too!