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Bug 341401

Summary:	NPE when expanding drop down list box in Designer
Product:	z_Archived	Reporter:	David Carver <d_a_carver>
Component:	WindowBuilder	Assignee:	Konstantin Scheglov <Konstantin.Scheglov>
Status:	CLOSED WORKSFORME	QA Contact:
Severity:	normal
Priority:	P3	CC:	clayberg
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Linux
Whiteboard:

Description David Carver

2011-03-30 13:38:57 EDT

Windowsbuilder 0.9.0r36x201103181406.

When using the designer to expand a drop down list box, I received the following stack trace after it completed, and the Designer view crashed.


ava.lang.NullPointerException
	at org.eclipse.wb.internal.core.model.ChildTargetCalculator.trackRelatedStatementsUp(ChildTargetCalculator.java:152)
	at org.eclipse.wb.internal.core.model.ChildTargetCalculator.getTarget(ChildTargetCalculator.java:92)
	at org.eclipse.wb.internal.core.model.JavaInfoUtils.getTarget(JavaInfoUtils.java:1623)
	at org.eclipse.wb.internal.core.model.JavaInfoUtils.add(JavaInfoUtils.java:1288)
	at org.eclipse.wb.internal.swt.model.layout.grid.GridLayoutInfo.addFiller(GridLayoutInfo.java:958)
	at org.eclipse.wb.internal.swt.model.layout.grid.GridLayoutInfo.fixGrid(GridLayoutInfo.java:905)
	at org.eclipse.wb.internal.swt.model.layout.grid.GridLayoutInfo.refresh_finish(GridLayoutInfo.java:246)
	at org.eclipse.wb.core.model.ObjectInfo.refresh_finish(ObjectInfo.java:648)
	at org.eclipse.wb.core.model.ObjectInfo.refresh_finish(ObjectInfo.java:648)
	at org.eclipse.wb.core.model.ObjectInfo.refresh_finish(ObjectInfo.java:648)
	at org.eclipse.wb.core.model.ObjectInfo$5$1.run(ObjectInfo.java:495)
	at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:139)
	at org.eclipse.wb.core.model.ObjectInfo$5.run(ObjectInfo.java:491)
	at org.eclipse.wb.core.model.ObjectInfo.doRefresh(ObjectInfo.java:512)
	at org.eclipse.wb.core.model.ObjectInfo.refresh(ObjectInfo.java:489)
	at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:504)
	at org.eclipse.wb.internal.core.editor.DesignPage.access$9(DesignPage.java:455)
	at org.eclipse.wb.internal.core.editor.DesignPage$7$1.run(DesignPage.java:388)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:179)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4310)
	at org.eclipse.wb.internal.core.editor.DesignPage$7.run(DesignPage.java:385)
	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
	at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
	at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:404)
	at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:354)
	at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
	at org.eclipse.wb.internal.core.editor.UndoManager.activate(UndoManager.java:90)
	at org.eclipse.wb.internal.core.editor.DesignPage$1.partActivated(DesignPage.java:101)
	at org.eclipse.ui.internal.PartListenerList$1.run(PartListenerList.java:72)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.runtime.Platform.run(Platform.java:888)
	at org.eclipse.ui.internal.PartListenerList.fireEvent(PartListenerList.java:57)
	at org.eclipse.ui.internal.PartListenerList.firePartActivated(PartListenerList.java:70)
	at org.eclipse.ui.internal.PartService.firePartActivated(PartService.java:187)
	at org.eclipse.ui.internal.PartService.setActivePart(PartService.java:306)
	at org.eclipse.ui.internal.WorkbenchPagePartList.fireActivePartChanged(WorkbenchPagePartList.java:57)
	at org.eclipse.ui.internal.PartList.setActivePart(PartList.java:136)
	at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3636)
	at org.eclipse.ui.internal.WorkbenchPage.toggleFastView(WorkbenchPage.java:3980)
	at org.eclipse.ui.internal.WorkbenchPage.hideFastView(WorkbenchPage.java:3960)
	at org.eclipse.ui.internal.FastViewPane$2.setState(FastViewPane.java:95)
	at org.eclipse.ui.internal.FastViewPane$3.handleEvent(FastViewPane.java:306)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1525)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1257)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267)
	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1061)
	at org.eclipse.swt.browser.WebKit.handleEvent(WebKit.java:951)
	at org.eclipse.swt.browser.WebKit$5.function(WebKit.java:551)
	at org.eclipse.swt.browser.WebKit.callJava(WebKit.java:1749)
	at org.eclipse.swt.browser.WebKit.JSObjectCallAsFunctionProc(WebKit.java:236)
	at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8296)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1239)
	at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
	at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2258)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3187)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

Comment 1 Konstantin Scheglov

2011-05-02 14:48:44 EDT

Can not reproduce without test case.
If you have one, attach it and reopen.