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  1. JDK
  2. JDK-8126583

[ScrollBar] NPE in mouse event processing.

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 7u6
    • Fix Version/s: 8
    • Component/s: javafx
    • Environment:

      2.2.0b17

      Description

      Sometimes i catch such exception:

      java.lang.NullPointerException
      at com.sun.javafx.scene.control.skin.ScrollBarSkin$8.handle(ScrollBarSkin.java:215)
      at com.sun.javafx.scene.control.skin.ScrollBarSkin$8.handle(ScrollBarSkin.java:199)
      at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:69)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:217)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:170)
      at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:38)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:37)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.scene.control.skin.VirtualFlow$6.dispatchEvent(VirtualFlow.java:537)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
      at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:53)
      at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:33)
      at javafx.event.Event.fireEvent(Event.java:171)
      at javafx.scene.Scene$MouseHandler.process(Scene.java:3290)
      at javafx.scene.Scene$MouseHandler.process(Scene.java:3130)
      at javafx.scene.Scene$MouseHandler.access$1900(Scene.java:3085)
      at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1525)
      at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2227)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:227)
      at com.sun.glass.ui.View.handleMouseEvent(View.java:528)
      at com.sun.glass.ui.View.notifyMouse(View.java:922)
      at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
      at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
      at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
      at java.lang.Thread.run(Thread.java:722)

      You may see, how i reproduces this on attached movie. (right mouse button click on vertical then on horizontal scrollbar; also, you can reproduce this in reversed order: horizontal, and vertical after that.)

      It is a bit tricky, but I can reproduce it easily on the attached application

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              • Assignee:
                miflemi Mick Fleming (Inactive)
                Reporter:
                akirov Alexander Kirov (Inactive)
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                Dates

                • Due:
                  Created:
                  Updated:
                  Resolved:
                  Imported: