Error while playing GWT Designer

[sonngoc]

After showing Preview window, all my components dispeared and i tried to refresh the designer, but got NullPointerException
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[Eric Clayberg]

Please send us your Eclipse ".log" file and a test case.

[sonngoc]

!SESSION 2006-10-16 21:00:06.480 -----------------------------------------------
eclipse.buildId=M20060628-1325
java.version=1.5.0_06
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.ui 4 0 2006-10-16 21:12:48.325
!MESSAGE java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at com.swtdesigner.gef.policy.common.layout.absolute.AbstractAbsoluteLayoutEditPolicy.getMoveChildrenCommand(AbstractAbsoluteLayoutEditPolicy.java:585)
at org.eclipse.gef.editpolicies.LayoutEditPolicy.getCommand(LayoutEditPolicy.java:172)
at com.swtdesigner.gef.policy.common.layout.absolute.AbstractAbsoluteLayoutEditPolicy.getCommand(AbstractAbsoluteLayoutEditPolicy.java:85)
at org.eclipse.gef.editparts.AbstractEditPart.getCommand(AbstractEditPart.java:494)
at org.eclipse.gef.editpolicies.NonResizableEditPolicy.getMoveCommand(NonResizableEditPolicy.java:165)
at org.eclipse.gef.editpolicies.NonResizableEditPolicy.getCommand(NonResizableEditPolicy.java:119)
at org.eclipse.gef.editpolicies.ResizableEditPolicy.getCommand(ResizableEditPolicy.java:66)
at org.eclipse.gef.editparts.AbstractEditPart.getCommand(AbstractEditPart.java:494)
at com.swtdesigner.gef.policy.common.redirect.ParentRedirectResizableEditPolicy$3.execute(ParentRedirectResizableEditPolicy.java:90)

!SESSION 2006-10-18 01:11:29.543 -----------------------------------------------
eclipse.buildId=M20060628-1325
java.version=1.5.0_06
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.ui 4 0 2006-10-18 01:13:01.616
!MESSAGE java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at org.eclipse.draw2d.FigureUtilities.setFont(FigureUtilities.java:369)
at org.eclipse.draw2d.FigureUtilities.getFontMetrics(FigureUtilities.java:58)
at org.eclipse.draw2d.text.FlowUtilities.getTextForSpace(FlowUtilities.java:53)
at org.eclipse.draw2d.text.ParagraphTextLayout.layout(ParagraphTextLayout.java:108)
at org.eclipse.draw2d.text.FlowFigureLayout.layout(FlowFigureLayout.java:79)
at org.eclipse.draw2d.Figure.layout(Figure.java:917)
at org.eclipse.draw2d.Figure.validate(Figure.java:1593)
at org.eclipse.draw2d.text.BlockFlowLayout.layoutChildren(BlockFlowLayout.java:95)

!ENTRY com.swtdesigner 4 4 2006-10-18 01:18:54.133
!MESSAGE Designer internal error [5.1.1.20061014071729]: java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at com.swtdesigner.model.properties.EventsProperty.getAddListenerMethods(EventsProperty.java:856)
at com.swtdesigner.model.properties.EventsProperty.hasListeners(EventsProperty.java:1129)
at com.swtdesigner.model.swing.JavaBeanInfo.getPropertyList(JavaBeanInfo.java:1574)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getPropertyList(UIObjectInfo.java:146)
at com.swtdesigner.gwt.model.widgets.WidgetInfo.getPropertyList(WidgetInfo.java:89)
at com.swtdesigner.model.JavaInfo.getProperties(JavaInfo.java:1025)
at com.swtdesigner.model.JavaInfo.contributePopupEventsActions(JavaInfo.java:7318)
at com.swtdesigner.model.JavaInfo.contributePopupEventsActions(JavaInfo.java:7308)
at com.swtdesigner.gef.popup.DesignerContextMenuProvider.addActions(DesignerContextMenuProvider.java:139)
at com.swtdesigner.gef.popup.DesignerContextMenuProvider.buildContextMenu(DesignerContextMenuProvider.java:113)
at com.swtdesigner.gef.popup.DesignerContextMenuProvider.buildContextMenu(DesignerContextMenuProvider.java:44)
at com.swtdesigner.gef.popup.DesignerContextMenuProvider.buildContextMenu(DesignerContextMenuProvider.java:36)
at org.eclipse.gef.ContextMenuProvider.menuAboutToShow(ContextMenuProvider.java:58)

!ENTRY com.swtdesigner 4 4 2006-10-18 01:18:56.406
!MESSAGE Designer internal error [5.1.1.20061014071729]: com.swtdesigner.properties.PropertyException: java.lang.NullPointerException
!STACK 0
org.apache.commons.lang.exception.NestableError: com.swtdesigner.properties.PropertyException: java.lang.NullPointerException
at com.swtdesigner.model.swing.properties.custom.DesignTimeHelper.execute(DesignTimeHelper.java:56)
at com.swtdesigner.model.JavaInfo.notifyPropertyChanged(JavaInfo.java:5656)
at com.swtdesigner.model.JavaInfo.notifyPropertyChanged(JavaInfo.java:5638)
at com.swtdesigner.gef.common.property.DesignerEditorPropertyComposite.handleRootNodeSelected(DesignerEditorPropertyComposite.java:588)
at com.swtdesigner.gef.common.property.DesignerEditorPropertyComposite.updatePropertyComposite(DesignerEditorPropertyComposite.java:789)
at com.swtdesigner.gef.DesignerEditor.parseCompilationUnit(DesignerEditor.java:1035)
at com.swtdesigner.gef.DesignerEditor.refreshDesignView(DesignerEditor.java:1084)
Caused by: com.swtdesigner.properties.PropertyException: java.lang.NullPointerException
at com.swtdesigner.gwt.model.widgets.panel.TopLevelUtils.createShot(TopLevelUtils.java:102)
at com.swtdesigner.gwt.model.widgets.panel.RootPanelInfo.createGUIShot(RootPanelInfo.java:58)
at com.swtdesigner.model.JavaInfo$18.execute(JavaInfo.java:5663)
at com.swtdesigner.model.swing.properties.custom.DesignTimeHelper.execute(DesignTimeHelper.java:54)
... 33 more
Caused by: java.lang.NullPointerException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.swtdesigner.gwt.model.widgets.support.GWTState.call_UIObject_getElement(GWTState.java:476)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.fetchObjectAbsoluteBounds(UIObjectInfo.java:369)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.fetchAbsoluteBounds(UIObjectInfo.java:363)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.createShot(UIObjectInfo.java:339)
at com.swtdesigner.gwt.model.widgets.panel.AbstractContainerInfo.createShot(AbstractContainerInfo.java:236)
at com.swtdesigner.gwt.model.widgets.panel.TopLevelUtils.createShot(TopLevelUtils.java:89)
... 36 more

!SESSION 2006-10-18 09:31:42.286 -----------------------------------------------
eclipse.buildId=M20060628-1325
java.version=1.5.0_06
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.ui 4 0 2006-10-18 09:49:36.671
!MESSAGE java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at com.swtdesigner.gwt.gef.policy.table.AbstractTableSelectionEditPolicy.showAdditionalPrimarySelection(AbstractTableSelectionEditPolicy.java:64)
at com.swtdesigner.gef.policy.common.grid.AbstractGridSelectionEditPolicy.showCellFigures(AbstractGridSelectionEditPolicy.java:110)
at com.swtdesigner.gef.policy.common.grid.AbstractGridSelectionEditPolicy.showSelection(AbstractGridSelectionEditPolicy.java:81)
at com.swtdesigner.gef.policy.common.grid.AbstractGridSelectionEditPolicy$1.propertyChange(AbstractGridSelectionEditPolicy.java:54)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at com.swtdesigner.model.JavaInfo.firePropertyChange(JavaInfo.java:5820)

!ENTRY com.swtdesigner 4 4 2006-10-18 09:49:44.792
!MESSAGE Designer internal error [5.1.1.20061014071729]: java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at com.swtdesigner.gef.common.geometry.Interval.getCopy(Interval.java:91)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.createCellsFeedbacks(AbstractGridLayoutEditPolicy.java:509)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.ensureCellsFeedbacks(AbstractGridLayoutEditPolicy.java:435)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.highlightCellFeedback(AbstractGridLayoutEditPolicy.java:469)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.showCreateFeedback(AbstractGridLayoutEditPolicy.java:175)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.showLayoutTargetFeedback(AbstractGridLayoutEditPolicy.java:78)
at org.eclipse.gef.editpolicies.LayoutEditPolicy.showTargetFeedback(LayoutEditPolicy.java:307)

!ENTRY org.eclipse.ui 4 0 2006-10-18 09:49:54.967
!MESSAGE java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at com.swtdesigner.gwt.gef.policy.table.AbstractTableSelectionEditPolicy.showAdditionalPrimarySelection(AbstractTableSelectionEditPolicy.java:64)
at com.swtdesigner.gef.policy.common.grid.AbstractGridSelectionEditPolicy.showCellFigures(AbstractGridSelectionEditPolicy.java:110)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.showSelectionFeedbacks(AbstractGridLayoutEditPolicy.java:233)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.eraseLayoutTargetFeedback(AbstractGridLayoutEditPolicy.java:88)
at org.eclipse.gef.editpolicies.LayoutEditPolicy.eraseTargetFeedback(LayoutEditPolicy.java:135)

!ENTRY com.swtdesigner 4 4 2006-10-18 09:50:09.478
!MESSAGE Designer internal error [5.1.1.20061014071729]: java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
at com.swtdesigner.gef.common.geometry.Interval.getCopy(Interval.java:91)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.createCellsFeedbacks(AbstractGridLayoutEditPolicy.java:509)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.ensureCellsFeedbacks(AbstractGridLayoutEditPolicy.java:435)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.highlightCellFeedback(AbstractGridLayoutEditPolicy.java:469)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.showCreateFeedback(AbstractGridLayoutEditPolicy.java:175)
at com.swtdesigner.gef.policy.common.grid.AbstractGridLayoutEditPolicy.showLayoutTargetFeedback(AbstractGridLayoutEditPolicy.java:78)
at org.eclipse.gef.editpolicies.LayoutEditPolicy.showTargetFeedback(LayoutEditPolicy.java:307)
at org.eclipse.gef.editparts.AbstractEditPart.showTargetFeedback(AbstractEditPart.java:1015)

[Eric Clayberg]

Can you send us a test case?

[sonngoc]

Can you send us a test case?

I am not sure about the test case, cause I usually get this problem when working with Gwt Designer. Does the ".log" file help?

[Eric Clayberg]

I am not sure about the test case, cause I usually get this problem when working with Gwt Designer. Does the ".log" file help?

The log file isn't that helpful without the added context provided by a test case.

Basically, we need a way to reproduce the problem (thus the need for a test case). If we can reproduce the problem, we can usually fix it pretty quickly.