Outline window causes an error.

What steps will reproduce the problem?
1. Create a proto file in C++ project.
2. Open Outline (Window->Show View->
Outline)

There will be error report instead of outline. Also, an error appears on every 
text change.

What version of the product are you using? On what operating system?

Eclipse IDE for C/C++ Developers
Version: Indigo Service Release 1
Build id: 20110916-0149

  Protocol Buffer Editor    1.1.1.201112160549  com.google.eclipse.protobuf.feature.group   Google, Inc.
  Xtext Runtime 2.2.1.v201112130541 org.eclipse.xtext.runtime.feature.group Eclipse Modeling Project
  Xtext UI  2.2.1.v201112130541 org.eclipse.xtext.ui.feature.group  Eclipse Modeling Project

Tried in windows and Ubuntu -- the same.

Please provide any additional information below.
This is shown when I press "Details >>":

java.lang.NoClassDefFoundError: com/google/inject/internal/Maps
    at com.google.eclipse.protobuf.ui.outline.OutlineViewModel.<init>(OutlineViewModel.java:29)
    at com.google.eclipse.protobuf.ui.outline.ProtobufOutlineTreeProvider._createChildren(ProtobufOutlineTreeProvider.java:54)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
    at org.eclipse.xtext.ui.editor.outline.impl.DefaultOutlineTreeProvider.createChildren(DefaultOutlineTreeProvider.java:79)
    at org.eclipse.xtext.ui.editor.outline.impl.AbstractOutlineNode$1.process(AbstractOutlineNode.java:80)
    at org.eclipse.xtext.ui.editor.outline.impl.AbstractOutlineNode$1.process(AbstractOutlineNode.java:1)
    at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:36)
    at org.eclipse.xtext.ui.editor.outline.impl.DocumentRootNode$1.exec(DocumentRootNode.java:47)
    at org.eclipse.xtext.ui.editor.outline.impl.DocumentRootNode$1.exec(DocumentRootNode.java:1)
    at org.eclipse.xtext.util.concurrent.AbstractReadWriteAcces.readOnly(AbstractReadWriteAcces.java:32)
    at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:78)
    at org.eclipse.xtext.ui.editor.outline.impl.DocumentRootNode.readOnly(DocumentRootNode.java:44)
    at org.eclipse.xtext.ui.editor.outline.impl.AbstractOutlineNode.getChildren(AbstractOutlineNode.java:77)
    at org.eclipse.xtext.ui.editor.outline.impl.OutlineNodeContentProvider.getChildren(OutlineNodeContentProvider.java:43)
    at org.eclipse.xtext.ui.editor.outline.impl.OutlineNodeContentProvider.getElements(OutlineNodeContentProvider.java:39)
    at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:1010)
    at org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:703)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1336)
    at org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:391)
    at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:917)
    at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:605)
    at org.eclipse.jface.viewers.AbstractTreeViewer.updateChildren(AbstractTreeViewer.java:2622)
    at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1908)
    at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:721)
    at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1883)
    at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1840)
    at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1826)
    at org.eclipse.jface.viewers.StructuredViewer$7.run(StructuredViewer.java:1508)
    at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1443)
    at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:403)
    at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1404)
    at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1506)
    at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:537)
    at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1465)
    at org.eclipse.xtext.ui.editor.outline.actions.IOutlineContribution$Composite.register(IOutlineContribution.java:74)
    at org.eclipse.xtext.ui.editor.outline.impl.OutlinePage.configureActions(OutlinePage.java:132)
    at org.eclipse.xtext.ui.editor.outline.impl.OutlinePage.createControl(OutlinePage.java:77)
    at org.eclipse.ui.views.contentoutline.ContentOutline.doCreatePage(ContentOutline.java:137)
    at org.eclipse.ui.part.PageBookView.createPage(PageBookView.java:408)
    at org.eclipse.ui.part.PageBookView.partActivated(PageBookView.java:751)
    at org.eclipse.ui.part.PageBookView.showBootstrapPart(PageBookView.java:920)
    at org.eclipse.ui.part.PageBookView.createPartControl(PageBookView.java:491)
    at org.eclipse.ui.views.contentoutline.ContentOutline.createPartControl(ContentOutline.java:121)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2245)
    at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1145)
    at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3921)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3918)
    at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHandler.java:162)
    at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHandler.java:76)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
    at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
    at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:829)
    at org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:815)
    at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:805)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3588)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3209)
    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:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    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)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Original issue reported on code.google.com by GamePa...@gmail.com on 9 Jan 2012 at 7:39
Merged into: #171
Attachments:
[Снимок-2012-01-09 23:30:29.png](https://storage.googleapis.com/google-code-attachments/protobuf-dt/issue-175/comment-0/Снимок-2012-01-09 23:30:29.png)
spearway / protobuf-dt

Outline window causes an error. #175
