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Build Identifier: 20100218-1602 The FilteredTree control sets it's own layoutData in it's createControl() routine. If this isn't compatible with the layout on the parent composite, this causes ClassCastException to occur when it tries to compute it's size. When you run into this it's not immediately obvious why, without debugging the code. Workaround : filteredTree.setLayout(null); immediately after creating it allows you to put the FilteredTree in e.g. a FillLayout without causing the exception. Reproducible: Always Steps to Reproduce: Construct a layout that has a GridLayout at the top, a composite with a FillLayout nested inside that, and the FilteredTree inside that.
Stack trace typical of this java.lang.ClassCastException: org.eclipse.swt.layout.GridData cannot be cast to org.eclipse.swt.layout.FillData at org.eclipse.swt.layout.FillLayout.computeChildSize(FillLayout.java:144) at org.eclipse.swt.layout.FillLayout.computeSize(FillLayout.java:122) at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:219) at org.eclipse.swt.widgets.TabFolder.minimumSize(TabFolder.java:511) at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:225) at org.eclipse.swt.widgets.TabFolder.computeSize(TabFolder.java:152) at org.eclipse.swt.custom.SashFormLayout.computeSize(SashFormLayout.java:39) at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:219) at org.eclipse.swt.layout.FillData.computeSize(FillData.java:26) at org.eclipse.swt.layout.FillLayout.computeChildSize(FillLayout.java:151) at org.eclipse.swt.layout.FillLayout.computeSize(FillLayout.java:122) at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:219) at org.eclipse.swt.layout.GridData.computeSize(GridData.java:483) at org.eclipse.swt.layout.GridLayout.layout(GridLayout.java:217) at org.eclipse.swt.layout.GridLayout.layout(GridLayout.java:193) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1428) at org.eclipse.swt.widgets.Composite.setBounds(Composite.java:1243) at org.eclipse.swt.widgets.Control.setBounds(Control.java:715) at org.eclipse.swt.layout.FillLayout.layout(FillLayout.java:201) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1428) at org.eclipse.swt.widgets.Composite.setBounds(Composite.java:1243) at org.eclipse.swt.widgets.Control.setBounds(Control.java:687) at org.eclipse.ui.internal.LayoutPart.setBounds(LayoutPart.java:300) at org.eclipse.ui.internal.presentations.PresentablePart.setBounds(PresentablePart.java:170) at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.layoutContent(PresentablePartFolder.java:131) at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.layout(PresentablePartFolder.java:412) at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:292) at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65) at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473) at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1256) at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1209) at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1608) at org.eclipse.ui.internal.PartStack.add(PartStack.java:499) at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103) at org.eclipse.ui.internal.PartStack.add(PartStack.java:485) at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112) at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63) at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:225) at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:213) at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:778) at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:677) at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:638) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2854) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2762) at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2754) at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2705) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2701) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2685) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2676) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:361) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:168) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:229) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:208) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250) at org.eclipse.jdt.internal.ui.navigator.OpenAndExpand.run(OpenAndExpand.java:49) at org.eclipse.ui.actions.RetargetAction.run(RetargetAction.java:221) at org.eclipse.ui.navigator.CommonNavigatorManager$3.open(CommonNavigatorManager.java:202) at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48) at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:842) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.runtime.Platform.run(Platform.java:888) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:840) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1101) at org.eclipse.ui.navigator.CommonViewer.handleOpen(CommonViewer.java:467) at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1205) at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:264) at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:258) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:298) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3493) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3112) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194) 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:368) 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:559) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514) at org.eclipse.equinox.launcher.Main.run(Main.java:1311) at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
(In reply to comment #0) > The FilteredTree control sets it's own layoutData in it's createControl() > routine. For future reference, FilteredTree is owned by JFace. JFace code is owned by UI, not SWT.
Seems like a duplicate of bug 226155, already fixed [1] [1] http://git.eclipse.org/c/platform/eclipse.platform.ui.git/commit/bundles/org.eclipse.ui.workbench/Eclipse%20UI/org/eclipse/ui/dialogs/FilteredTree.java?id=c9e5e2d2d0c28bcc0fef48dcca2be87cc429db51
Agree, marking as such. *** This bug has been marked as a duplicate of bug 226155 ***
