JDK-8120112 : ComboBox doesn't render scroll bars
  • Type: Bug
  • Component: javafx
  • Sub-Component: scenegraph
  • Affected Version: 8
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2013-07-25
  • Updated: 2015-06-17
  • Resolved: 2013-09-13
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JDK 8
8Fixed
Related Reports
Relates :  
JDK-8123906 - Long press on virtual keyboard key causes NPE
Relates :  
JDK-8124074 - PopupWindow reports incorrect width and height
Description
Please, watch the attached video.

Actually there are 3 issues:
1. Scroll bars are not rendered
2. Scroll knob changes its size during scrolling
3. When the arrow of the scroll bar is pressed then exception is thrown

Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
	at com.sun.javafx.scene.control.skin.VirtualFlow.positionCell(VirtualFlow.java:1658)
	at com.sun.javafx.scene.control.skin.VirtualFlow.adjustPixels(VirtualFlow.java:2030)
	at com.sun.javafx.scene.control.skin.VirtualScrollBar.decrement(VirtualScrollBar.java:73)
	at com.sun.javafx.scene.control.behavior.ScrollBarBehavior$2.handle(ScrollBarBehavior.java:247)
	at com.sun.javafx.scene.control.behavior.ScrollBarBehavior$2.handle(ScrollBarBehavior.java:243)
	at com.sun.javafx.scene.control.behavior.ScrollBarBehavior.decButtonPressed(ScrollBarBehavior.java:260)
	at com.sun.javafx.scene.control.skin.ScrollBarSkin$3.handle(ScrollBarSkin.java:134)
	at com.sun.javafx.scene.control.skin.ScrollBarSkin$3.handle(ScrollBarSkin.java:128)
	at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
	at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.scene.control.skin.VirtualFlow$4.dispatchEvent(VirtualFlow.java:502)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
	at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
	at javafx.event.Event.fireEvent(Event.java:203)
	at javafx.scene.Scene$MouseHandler.process(Scene.java:3543)
	at javafx.scene.Scene$MouseHandler.process(Scene.java:3374)
	at javafx.scene.Scene$MouseHandler.access$1900(Scene.java:3326)
	at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1617)
	at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2394)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:312)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:237)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:354)
	at com.sun.glass.ui.View.handleMouseEvent(View.java:514)
	at com.sun.glass.ui.View.notifyMouse(View.java:877)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.access$300(WinApplication.java:39)
	at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:101)
	at java.lang.Thread.run(Thread.java:724)
Comments
Target build: b108
13-09-2013
RT-29891 is fixed now, so this issue is no longer reproducible
13-09-2013
The issue #1 needs to be resolved in PopupWindow. Lubo is currently working on a fix for RT-29891 that should also fix this bug. After RT-29891 is fixed, I'll verify that it fixed also this issue.
31-07-2013
Issue #2 is a non-issue, and issue #3 has been resolved already. Issue #1 looks like another scenegraph layout regression. Assigning to Martin for review.
31-07-2013
RULE ControlsAutomatedTestSuite/javafx/scene/control/test/combobox/ComboBoxTest/testCellRenderingHeight Exception java.lang.AssertionError:
25-07-2013