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Bug 369521

Summary:	[Examples Demo] Exception when navigating through the browser history
Product:	[RT] RAP	Reporter:	Ivan Furnadjiev <ivan>
Component:	RWT	Assignee:	Project Inbox <rap-inbox>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P3
Version:	1.5
Target Milestone:	1.5 M6
Hardware:	All
OS:	All
Whiteboard:
Bug Depends on:	372960
Bug Blocks:

Description Ivan Furnadjiev

2012-01-24 09:13:33 EST

Steps to reproduce it:
1. Start Examples Demo
2. Click with mouse sequentially "Dialogs", "Drag & Drop", "TreeViewer"
3. Click browser "Back" button to navigate back to the "Drag & Drop" page. The following exception is thrown:
org.eclipse.swt.SWTException: Widget is disposed
	at org.eclipse.swt.SWT.error(SWT.java:3531)
	at org.eclipse.swt.SWT.error(SWT.java:3454)
	at org.eclipse.swt.SWT.error(SWT.java:3425)
	at org.eclipse.swt.widgets.Widget.error(Widget.java:951)
	at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:894)
	at org.eclipse.swt.widgets.Widget.removeListener(Widget.java:537)
	at org.eclipse.swt.dnd.DragSource.onDispose(DragSource.java:302)
	at org.eclipse.swt.dnd.DragSource.access$0(DragSource.java:299)
	at org.eclipse.swt.dnd.DragSource$2.handleEvent(DragSource.java:170)
	at org.eclipse.swt.internal.widgets.UntypedEventAdapter.dispatchEvent(UntypedEventAdapter.java:646)
	at org.eclipse.swt.internal.widgets.UntypedEventAdapter.widgetDisposed(UntypedEventAdapter.java:78)
	at org.eclipse.swt.events.DisposeEvent.dispatchToObserver(DisposeEvent.java:63)
	at org.eclipse.rwt.internal.events.Event.processEvent(Event.java:46)
	at org.eclipse.swt.events.TypedEvent.processEvent(TypedEvent.java:166)
	at org.eclipse.swt.widgets.Widget.dispose(Widget.java:774)
	at org.eclipse.swt.dnd.DragSource$1.handleEvent(DragSource.java:155)
	at org.eclipse.swt.internal.widgets.UntypedEventAdapter.dispatchEvent(UntypedEventAdapter.java:646)
	at org.eclipse.swt.internal.widgets.UntypedEventAdapter.widgetDisposed(UntypedEventAdapter.java:78)
	at org.eclipse.swt.events.DisposeEvent.dispatchToObserver(DisposeEvent.java:63)
	at org.eclipse.rwt.internal.events.Event.processEvent(Event.java:46)
	at org.eclipse.swt.events.TypedEvent.processEvent(TypedEvent.java:166)
	at org.eclipse.swt.events.TypedEvent.executeNext(TypedEvent.java:188)
	at org.eclipse.swt.widgets.Display.runPendingMessages(Display.java:1134)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1124)
	at org.eclipse.rap.examples.internal.MainUi.createUI(MainUi.java:56)
	at org.eclipse.rap.examples.internal.Application.createUI(Application.java:19)
	at org.eclipse.rwt.internal.lifecycle.EntryPointManager.createUI(EntryPointManager.java:90)
	at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWTLifeCycle.java:172)
	at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadController.run(RWTLifeCycle.java:280)
	at java.lang.Thread.run(Thread.java:722)
	at org.eclipse.rwt.internal.lifecycle.UIThread.run(UIThread.java:101)

Comment 1 Ivan Furnadjiev

2012-01-24 10:38:53 EST

Similar situation but with Canvas page:
1. Start Examples Demo
2. Click with mouse sequentially "TableViewer", "Canvas", "RowLayout"
3. Click browser "Back" button to navigate back to the "Canvas" page. The following exception is thrown:
org.eclipse.swt.SWTException: Graphic is disposed
	at org.eclipse.swt.SWT.error(SWT.java:3531)
	at org.eclipse.swt.SWT.error(SWT.java:3454)
	at org.eclipse.swt.SWT.error(SWT.java:3425)
	at org.eclipse.swt.graphics.GC.checkDisposed(GC.java:1487)
	at org.eclipse.swt.graphics.GC.setLineWidth(GC.java:423)
	at org.eclipse.rap.examples.pages.CanvasExamplePage$DrawingAreaPaintListener.paintControl(CanvasExamplePage.java:232)
	at org.eclipse.swt.events.PaintEvent.dispatchToObserver(PaintEvent.java:102)
	at org.eclipse.rwt.internal.events.Event.processEvent(Event.java:46)
	at org.eclipse.swt.events.TypedEvent.processEvent(TypedEvent.java:166)
	at org.eclipse.swt.events.TypedEvent.executeNext(TypedEvent.java:188)
	at org.eclipse.swt.widgets.Display.runPendingMessages(Display.java:1134)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1124)
	at org.eclipse.rap.examples.internal.MainUi.createUI(MainUi.java:56)
	at org.eclipse.rap.examples.internal.Application.createUI(Application.java:19)
	at org.eclipse.rwt.internal.lifecycle.EntryPointManager.createUI(EntryPointManager.java:90)
	at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWTLifeCycle.java:172)
	at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadController.run(RWTLifeCycle.java:280)
	at java.lang.Thread.run(Thread.java:722)
	at org.eclipse.rwt.internal.lifecycle.UIThread.run(UIThread.java:101)

Comment 2 Ivan Furnadjiev

2012-01-24 12:08:57 EST

Strange enough, two hours ago (when I opened this bug) I could reproduce these exceptions all the time.... but now I can't.

Comment 3 Ivan Furnadjiev

2012-03-02 01:36:18 EST

Fix together with bug 372960.