[news.eclipse.tools.gef] Exception in thubnail generation for outline vi

[vijay.rajonline@xxxxxxxxx (vijay )]

Hi,

I am getting an exception when i close the application,

The thing is i have gef view in which i am generating a large class 
diagram(1000<classes with aggrigation,realization and generalization 
connections),

there is an outline view which shows the thumbnail  of the relations view,
The relations view takes some time to load(pls give some advice to improve 
rendering performance,the gui goes blank for some time in case of very 
large no of classes),
but even after the relations view gets loaded the thumbnail view loads 
slowly and is still loading,

now if i close the application i get the following exception

org.eclipse.swt.SWTException: Failed to execute runnable 
(org.eclipse.swt.SWTException: Graphic is disposed)
	at org.eclipse.swt.SWT.error(SWT.java:3777)
	at org.eclipse.swt.SWT.error(SWT.java:3695)
	at 
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3800)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3425)
	at org.eclipse.swt.widgets.Display.release(Display.java:3476)
	at org.eclipse.swt.graphics.Device.dispose(Device.java:261)
	at 
ch.dgsl.iarc.application.internal.Application.start(Application.java:37)
	at 
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
	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:386)
	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:623)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
Caused by: org.eclipse.swt.SWTException: Graphic is disposed
	at org.eclipse.swt.SWT.error(SWT.java:3777)
	at org.eclipse.swt.SWT.error(SWT.java:3695)
	at org.eclipse.swt.SWT.error(SWT.java:3666)
	at org.eclipse.swt.graphics.Font.getFontData(Font.java:183)
	at 
org.eclipse.draw2d.ScaledGraphics.getCachedFontData(ScaledGraphics.java:458)
	at org.eclipse.draw2d.ScaledGraphics.zoomFont(ScaledGraphics.java:753)
	at org.eclipse.draw2d.ScaledGraphics.setLocalFont(ScaledGraphics.java:686)
	at org.eclipse.draw2d.ScaledGraphics.setFont(ScaledGraphics.java:638)
	at org.eclipse.draw2d.Figure.paint(Figure.java:1045)
	at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1087)
	at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1123)
	at org.eclipse.draw2d.Figure.paint(Figure.java:1051)
	at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1087)
	at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1123)
	at org.eclipse.draw2d.Figure.paint(Figure.java:1051)
	at 
net.java.amateras.uml.classdiagram.figure.ext.ClassFigure.paint(ClassFigure.java:44)
	at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1087)
	at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1119)
	at org.eclipse.draw2d.Figure.paint(Figure.java:1051)
	at 
net.java.amateras.uml.editpart.RootEditPart$1.paint(RootEditPart.java:75)
	at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1087)
	at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1119)
	at org.eclipse.draw2d.Figure.paint(Figure.java:1051)
	at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1087)
	at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1119)
	at org.eclipse.draw2d.Figure.paint(Figure.java:1051)
	at 
org.eclipse.draw2d.parts.Thumbnail$ThumbnailUpdater.run(Thumbnail.java:159)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at 
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:133)
	... 18 more



How to solve this?


Also zooming is also slow how can i improve it???