| EMF Forms Widget Disposed Exception [message #1782227] |
Tue, 20 February 2018 13:44  |
Eclipse User |
|
|
|
I am using EMFForms to get a composite populated with the details of an EObject selected in another widget, The basic sequence is the following:
1. In widgetA, an EObject (EObject1) is selected.
2. Widget widgetB, which contains the EMFForm generate details, receives the selection.
3. The controls in widgetB are disposed.
4. A VView (viewModel) is created for eObject1;
5. ECPSWTViewRenderer.INSTANCE.render(widgetB, eObject1, viewModel) is called.
6. Up to that point, all is good.
7. A new eObject (eObject2) is selected in widgetA.
8. Steps 2 to 5 are repeated for eObject2.
9 . At that point, an attribute changes in eObject1 (which no longer displayed) starte chnaging periodically (it is driven from a Job) . I then start to continuously get :
org.eclipse.swt.SWTException: Failed to execute runnable (org.eclipse.swt.SWTException: Widget is disposed)
at org.eclipse.swt.SWT.error(SWT.java:4533)
at org.eclipse.swt.SWT.error(SWT.java:4448)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4536)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4154)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at ca.gc.asc_csa.apogy.rcp.Application.start(Application.java:20)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
at org.eclipse.equinox.launcher.Main.main(Main.java:1492)
Caused by: org.eclipse.swt.SWTException: Widget is disposed
at org.eclipse.swt.SWT.error(SWT.java:4533)
at org.eclipse.swt.SWT.error(SWT.java:4448)
at org.eclipse.swt.SWT.error(SWT.java:4419)
at org.eclipse.swt.widgets.Widget.error(Widget.java:483)
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:420)
at org.eclipse.swt.widgets.Composite.layout(Composite.java:962)
at org.eclipse.emf.ecp.view.internal.core.swt.renderer.LinkControlSWTRenderer$9$1.run(LinkControlSWTRenderer.java:420)
at org.eclipse.ui.internal.UILockListener.doPendingWork(UILockListener.java:162)
at org.eclipse.ui.internal.UISynchronizer$3.run(UISynchronizer.java:154)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
... 24 more
I believe the problem is the dispose done in step 3. It seems that the listeners that are created by EMFForms are not unregistered and keep trying to update the widgets.
What is the correct way of disposing of an EMFForm generated composite content to prevent this from happening ?
Thanks !
|
|
|
|
Powered by
FUDForum. Page generated in 0.03938 seconds
Home