Unknown Windowtype Error - NoClassDefFoundError: org/eclipse

[chuhan]

Hi,

Suddenly, when i open any composite, i get an Unknow winow type error.

Does anyone know what possibly causes this error?

thanks in advance.

======== exception ===================
java.lang.NoClassDefFoundError: org/eclipse/wst/sse/ui/internal/reconcile/validator/ValidationHelper
at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.isEnabled(ExcludeFromValidationActionDelegate.java:212)
at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.selectionChanged(ExcludeFromValidationActionDelegate.java:196)
at org.eclipse.ui.internal.PluginAction.refreshEnablement(PluginAction.java:208)
at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:280)
at org.eclipse.ui.internal.ObjectActionContributor.contributeObjectActions(ObjectActionContributor.java:144)
at org.eclipse.ui.internal.ObjectActionContributorManager.contributeObjectActions(ObjectActionContributorManager.java:96)
at org.eclipse.ui.internal.PopupMenuExtender.addObjectActions(PopupMenuExtender.java:253)
at org.eclipse.ui.internal.PopupMenuExtender.menuAboutToShow(PopupMenuExtender.java:315)
at org.eclipse.jface.action.MenuManager.fireAboutToShow(MenuManager.java:289)
at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:395)
at org.eclipse.jface.action.MenuManager.access$1(MenuManager.java:391)
at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:417)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:117)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:952)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:933)
at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:3556)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:3272)
at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1539)
at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:1634)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4025)
at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method)
at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:225)
at org.eclipse.swt.widgets.Display.runPopups(Display.java:3374)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2962)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
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:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
======== ====================================

[Eric Clayberg]

Suddenly, when i open any composite, i get an Unknow winow type error.
Does anyone know what possibly causes this error?
======== exception ===================
java.lang.NoClassDefFoundError: org/eclipse/wst/sse/ui/internal/reconcile/validator/ValidationHelper
at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.isEnabled(ExcludeFromValidationActionDelegate.java:212)
at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.selectionChanged(ExcludeFromValidationActionDelegate.java:196)

Looks like a MyEclipse problem of some sort.

[chuhan]

Suddenly, when i open any composite, i get an Unknow winow type error.
Does anyone know what possibly causes this error?
======== exception ===================
java.lang.NoClassDefFoundError: org/eclipse/wst/sse/ui/internal/reconcile/validator/ValidationHelper
at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.isEnabled(ExcludeFromValidationActionDelegate.java:212)
at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.selectionChanged(ExcludeFromValidationActionDelegate.java:196)

Looks like a MyEclipse problem of some sort.

Hi, Eric

It doesn't seems that it a MyEclipse problem because after I installed everything again without MyEclipse, still it has the same symptom. And if I create a new GWT project, in the new project, Designer is working fine.

thanks

[Eric Clayberg]

It doesn't seems that it a MyEclipse problem because after I installed everything again without MyEclipse, still it has the same symptom.

The exception you reported was the following...

Code: Select all

java.lang.NoClassDefFoundError: org/eclipse/wst/sse/ui/internal/reconcile/validator/ValidationHelper
    at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.isEnabled(ExcludeFromValidationActionDelegate.java:212)
    at com.genuitec.myeclipse.ui.action.ExcludeFromValidationActionDelegate.selectionChanged(ExcludeFromValidationActionDelegate.java:196)

That is most definitely a MyEclipse exception as you can see from the package names.

And if I create a new GWT project, in the new project, Designer is working fine.

Does that mean you are still having a problem or not?

If you are still having a problem, please provide a test case and your Eclipse ".log" file (or list any Designer related exceptions in that log).

[chuhan]

Hi, Eric.

By mistake, I opened a wrong log file and posted a wrong exception message.
I'm sorry about confusing you. Anyway, after reinstalling Eclipse 2-3 times, I could manage to make it work.

But today, I have the same error from one Composite class.
A weird thing is that if i get rid of one of the delegate method from the class, Designer works fine.

The following is the complete class definition of the Composite and exception from log file.
Without "showSearchBox()" at the bottom, Designer comes back.

Code: Select all

public abstract class BodyBaseFull extends Composite implements MainBody{

   /********************************************/
   private GeneralPaneHorizontal generalPane;
   private VerticalPanel mainVerticalPane;
   /********************************************/
   protected boolean initialized;

   public BodyBaseFull() {
      mainVerticalPane = new VerticalPanel();
      initWidget(mainVerticalPane);
      {
         generalPane = new GeneralPaneHorizontal();
         mainVerticalPane.add(generalPane);

      }
      addStyleName("x-body-panel");
   }

   public void initialize() {
      checkArgument();
      initializeInternal();

      initialized=true;
   }

   public boolean isInitialized() {
      return initialized;
   }

   public void release() {
      releaseInternal();
      initialized=false;
   }


   public HorizontalPanel getHeaderHorizontalPanel() {
      return generalPane.getHeaderHorizontalPanel();
   }

   public HorizontalPanel getHeaderSubHorizontalPanel0() {
      return generalPane.getHeaderSubHorizontalPanel0();
   }

   public HorizontalPanel getHeaderSubHorizontalPanel1() {
      return generalPane.getHeaderSubHorizontalPanel1();
   }

   public Label getHeaderTitleLabel() {
      return generalPane.getHeaderTitleLabel();
   }

   public Image getRightTopImg() {
      return generalPane.getRightTopImg();
   }

   public TextBox getSearchTextBox() {
      return generalPane.getSearchTextBox();
   }

   public Panel getContentPanel() {
      return generalPane.getContentPanel();
   }


               // this method is the trouble maker...
   public void showSearchBox(boolean bool) {
      generalPane.showSearchBox(bool);
   }
   
   public abstract void checkArgument();
   protected abstract void initializeInternal();
   protected abstract void releaseInternal();

}


Code: Select all

!ENTRY com.swtdesigner 4 4 2007-02-09 23:38:37.859
!MESSAGE Designer internal error [6.1.1.20070209141655]: java.lang.StackOverflowError
!STACK 0
java.lang.StackOverflowError
   at java.util.HashMap.get(Unknown Source)
   at org.eclipse.jdt.core.dom.ASTNode.getProperty(ASTNode.java:2101)
   at com.swtdesigner.model.util.ast.DesignerASTCacheStrategy.getMethodInvocations(DesignerASTCacheStrategy.java:48)
   at com.swtdesigner.model.util.ast.ASTNodeUtilities.getMethodInvocations(ASTNodeUtilities.java:2619)
   at com.swtdesigner.model.JavaInfo.isRepresentedBySingleVariableDeclaration(JavaInfo.java:3838)
   at com.swtdesigner.model.JavaInfo.isRepresentedByNoCache(JavaInfo.java:3827)
   at com.swtdesigner.model.JavaInfo.isRepresentedBy(JavaInfo.java:3716)
   at com.swtdesigner.model.swing.JavaBeanInfo.isRepresentedBy(JavaBeanInfo.java:1253)
   at com.swtdesigner.model.JavaInfo.isRepresentedByNoCache(JavaInfo.java:3810)
   at com.swtdesigner.model.JavaInfo.isRepresentedBy(JavaInfo.java:3716)
   at com.swtdesigner.model.swing.JavaBeanInfo.isRepresentedBy(JavaBeanInfo.java:1253)
   at com.swtdesigner.model.JavaInfo.isRepresentedBySingleVariableDeclaration(JavaInfo.java:3842)
   at com.swtdesigner.model.JavaInfo.isRepresentedByNoCache(JavaInfo.java:3827)
   at com.swtdesigner.model.JavaInfo.isRepresentedBy(JavaInfo.java:3716)
   at com.swtdesigner.model.swing.JavaBeanInfo.isRepresentedBy(JavaBeanInfo.java:1253)
...
...


Thanks in advance.

chuhan

[Eric Clayberg]

Try this again with the latest build.

[chuhan]

Try this again with the latest build.

Hi, Eric.

With the new build, Designer is working fine with the Composite. But, the classes inheriting the Composite doesn't work. When I open them in Design view, i get an NullpointerException. I had this error before but I didn't mentioned because I thought the problem was caused by the Composite and it would work if the Composite error gets fixed, but it still doesn't work

The following is the exception message.

Code: Select all


!ENTRY com.swtdesigner 4 4 2007-02-12 09:09:54.640
!MESSAGE Designer internal error [6.1.1.20070212063818]: 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:5446)
   at com.swtdesigner.model.JavaInfo.notifyPropertyChanged(JavaInfo.java:5428)
   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:1094)
   at com.swtdesigner.gef.DesignerEditor.refreshDesignView(DesignerEditor.java:1144)
   at com.swtdesigner.gef.DesignerEditor$14.widgetSelected(DesignerEditor.java:891)
   at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
   at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
   at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3465)
   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3079)
   at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1945)
   at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1909)
   at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:425)
   at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
   at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
   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 org.eclipse.equinox.internal.app.EclipseAppContainer.callMethod(EclipseAppContainer.java:522)
   at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:147)
   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:104)
   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:74)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:170)
   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 org.eclipse.core.launcher.Main.invokeFramework(Main.java:339)
   at org.eclipse.core.launcher.Main.basicRun(Main.java:283)
   at org.eclipse.core.launcher.Main.run(Main.java:984)
   at org.eclipse.core.launcher.Main.main(Main.java:959)
Caused by: com.swtdesigner.properties.PropertyException: java.lang.NullPointerException
   at com.swtdesigner.gwt.model.widgets.panel.TopLevelUtils.createShot(TopLevelUtils.java:112)
   at com.swtdesigner.gwt.model.widgets.panel.ThisCompositeInfo.createGUIShot(ThisCompositeInfo.java:196)
   at com.swtdesigner.model.JavaInfo$19.execute(JavaInfo.java:5453)
   at com.swtdesigner.model.swing.properties.custom.DesignTimeHelper.execute(DesignTimeHelper.java:54)
   ... 35 more
Caused by: java.lang.NullPointerException
   at com.swtdesigner.gwt.model.widgets.UIObjectInfo.fetchElementAbsoluteBounds(UIObjectInfo.java:422)
   at com.swtdesigner.gwt.model.widgets.UIObjectInfo.fetchObjectAbsoluteBounds(UIObjectInfo.java:412)
   at com.swtdesigner.gwt.model.widgets.UIObjectInfo.fetchAbsoluteBounds(UIObjectInfo.java:406)
   at com.swtdesigner.gwt.model.widgets.panel.TopLevelUtils.createShot(TopLevelUtils.java:85)
   ... 38 more


thank you.

chuhan[/code]

[Eric Clayberg]

Please provide a test case.

[chuhan]

Please provide a test case.

Hi, Eric.

I could duplicate the same error by creating very simple two classes.

In the example, the first one is an abastrct Composite class and the second one is inheriting it. When I open the second one in Design view, i get NullPointerException.

Code: Select all

public abstract class TestAbstract extends Composite {
   public TestAbstract() {
      {
         final HorizontalPanel horizontalPanel = new HorizontalPanel();
         initWidget(horizontalPanel);
      }
   }
   
   public abstract void testmethod();
}


public class TestConcrete extends TestAbstract {

   public void testmethod() {
      
   }

}



thanks in advance.

chuhan

[Eric Clayberg]

Make TestAbstract non-abstract and it should work.

GWT Designer needs to be able to instantiate any superclass used by a visual subclass, so you won't be able to edit any direct subclass of an abstract class.

BTW, you also need to expose horizontalPanel as a public component. Otherwise, you won't be able to add any children to it in the subclass.

[chuhan]

Make TestAbstract non-abstract and it should work.

GWT Designer needs to be able to instantiate any superclass used by a visual subclass, so you won't be able to edit any direct subclass of an abstract class.

BTW, you also need to expose horizontalPanel as a public component. Otherwise, you won't be able to add any children to it in the subclass.

thanks Eric.

I can make it concret but the reason that we use an abstract class is to enforce inheriting classes to implement the abstract methods. I believe that it would be very helpful if Deisnger allows to do it. Do you have any plan to allow it?


chuhan

[Eric Clayberg]

I can make it concret but the reason that we use an abstract class is to enforce inheriting classes to implement the abstract methods. I believe that it would be very helpful if Deisnger allows to do it. Do you have any plan to allow it?

Yes. Give the latest build a try.

Designer needs to be able to instantiate any class used as the direct superclass for the class being edited. Normally, that is impossible for an abstract class. After considerable research and experimentation, we have added a special class loader that uses ASM to remove the abstract flag on the class and the replace any abstract methods with methods that throw java.lang.Error. The superclass should not call those methods at deisgn time to avoid throwing that exception (use Beans.isDesignTime() to avoid calling them). This should help in most cases needing to use an abstract superclass.

[chuhan]

Hi, Eric.

I tested it and it works good.
I really appreciate your quick response and definately, it helps us a lot.

thank you.

chuhan