[jbosstools-issues] [JBoss JIRA] Created: (JBIDE-1045) Visual Editor throws exceptions during undo execution

[Denis Golovin (JIRA)]

Visual Editor throws exceptions during undo execution
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                 Key: JBIDE-1045
                 URL: http://jira.jboss.com/jira/browse/JBIDE-1045
             Project: JBoss Tools
          Issue Type: Bug
         Environment: Windows XP Professional
            Reporter: Denis Golovin
         Assigned To: Sergey Vasilyev
             Fix For: 2.0.0.xulrunner


1. Create seam web project 
2. Open WebContent/login.xhtml
3. select login button 
4. increase button width using resizer (DnD right square to the right, release DnD) 
5. then drag upper center resizer square up and drop it
6. try undo the changes by Ctrl-Z

Exception occurs:

java.lang.ClassCastException: $Proxy12
	at org.jboss.tools.vpe.editor.template.VpeCopyCreator.removeAttribute(VpeCopyCreator.java:124)
	at org.jboss.tools.vpe.editor.template.VpeHtmlTemplate.removeAttribute(VpeHtmlTemplate.java:558)
	at org.jboss.tools.vpe.editor.template.VpeHtmlTemplate.removeAttribute(VpeHtmlTemplate.java:544)
	at org.jboss.tools.vpe.editor.template.VpeHtmlTemplate.removeAttribute(VpeHtmlTemplate.java:170)
	at org.jboss.tools.vpe.editor.VpeVisualDomBuilder.removeAttribute(VpeVisualDomBuilder.java:984)
	at org.jboss.tools.vpe.editor.VpeController.notifyChanged(VpeController.java:363)
	at org.eclipse.wst.sse.core.internal.provisional.AbstractNotifier.notify(AbstractNotifier.java:201)
	at org.eclipse.wst.xml.core.internal.document.XMLModelNotifierImpl.notify(XMLModelNotifierImpl.java:238)
	at org.eclipse.wst.xml.core.internal.document.XMLModelNotifierImpl.notifyDeferred(XMLModelNotifierImpl.java:340)
	at org.eclipse.wst.xml.core.internal.document.XMLModelNotifierImpl.endChanging(XMLModelNotifierImpl.java:178)
	at org.eclipse.wst.xml.core.internal.document.DOMModelImpl.changedModel(DOMModelImpl.java:163)
	at org.eclipse.wst.sse.core.internal.undo.StructuredTextUndoManager.undo(StructuredTextUndoManager.java:648)
	at org.eclipse.wst.sse.ui.StructuredTextViewerUndoManager.undo(StructuredTextViewerUndoManager.java:183)
	at org.eclipse.jface.text.TextViewer.doOperation(TextViewer.java:3693)
	at org.eclipse.jface.text.source.SourceViewer.doOperation(SourceViewer.java:857)
	at org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation(ProjectionViewer.java:1429)
	at org.eclipse.wst.sse.ui.internal.StructuredTextViewer.doOperation(StructuredTextViewer.java:502)
	at org.jboss.tools.jst.jsp.jspeditor.JSPTextEditor$JSPStructuredTextViewer.doOperation(JSPTextEditor.java:627)
	at org.eclipse.ui.texteditor.TextOperationAction$1.run(TextOperationAction.java:131)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
	at org.eclipse.ui.texteditor.TextOperationAction.run(TextOperationAction.java:129)
	at org.jboss.tools.vpe.editor.VpeVisualKeyHandler.ctrlKeyPressHandler(VpeVisualKeyHandler.java:134)
	at org.jboss.tools.vpe.editor.VpeVisualKeyHandler.keyPressHandler(VpeVisualKeyHandler.java:95)
	at org.jboss.tools.vpe.editor.VpeController.keyPress(VpeController.java:844)
	at org.jboss.tools.vpe.editor.mozilla.MozillaDomEventListener.handleEvent(MozillaDomEventListener.java:162)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2264)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3291)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
	at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
	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.launcher.Main.invokeFramework(Main.java:504)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1144)


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