Project: Eclipse_Platform_UI
Bug 331126 [Compatibility] NPE in perspective code when adding standalone view relative to a view
Reported: 2010-11-25 09:37:36 | Status: resolved fixed

public void createInitialLayout(IPageLayout layout) { layout.addView(IPageLayout.ID_BOOKMARKS, IPageLayout.RIGHT, 0.25f, IPageLayout.ID_EDITOR_AREA); layout.addStandaloneView(IPageLayout.ID_OUTLINE, false, IPageLayout.TOP, .3f, IPageLayout.ID_BOOKMARKS); } Caused by: java.lang.IllegalArgumentException: The added object 'org.eclipse.e4.ui.model.application.ui.basic.impl.PartSashContainerImpl@10641064 (elementId: null, tags: null) (widget: null, renderer: null, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null) (horizontal: false)' is not assignable to 'org.eclipse.e4.ui.model.application.ui.basic.MStackElement' at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl$1.validate(ElementContainerImpl.java:114) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl$1.validate(ElementContainerImpl.java:1) at org.eclipse.emf.common.util.BasicEList.addUnique(BasicEList.java:443) at org.eclipse.emf.common.notify.impl.NotifyingListImpl.doAddUnique(NotifyingListImpl.java:393) at org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:377) at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:345) at org.eclipse.ui.internal.e4.compatibility.ModeledPageLayout.insert(ModeledPageLayout.java:444) at org.eclipse.ui.internal.e4.compatibility.ModeledPageLayout.insert(ModeledPageLayout.java:523) at org.eclipse.ui.internal.e4.compatibility.ModeledPageLayout.insertView(ModeledPageLayout.java:344) at org.eclipse.ui.internal.e4.compatibility.ModeledPageLayout.addStandaloneView(ModeledPageLayout.java:177) at b.perspectives.RelEngPerspective.createInitialLayout(RelEngPerspective.java:11) at org.eclipse.ui.internal.WorkbenchPage.setPerspective(WorkbenchPage.java:2635) at org.eclipse.ui.handlers.ShowPerspectiveHandler.openPerspective(ShowPerspectiveHandler.java:146) at org.eclipse.ui.handlers.ShowPerspectiveHandler.openOther(ShowPerspectiveHandler.java:118) at org.eclipse.ui.handlers.ShowPerspectiveHandler.execute(ShowPerspectiveHandler.java:57) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)

Files changed in fix:
bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/e4/compatibility/ModeledPageLayout.java