如果 Part 从 Area 内的 PartStack 中关闭，则会引发异常

Question

我有基于兼容层的 RCP 应用程序。 在 UI 中，我有区域（包含零件堆栈），如下图所示。

我创建了一个在上述区域中打开的部分，见下文。

现在的问题是当我关闭我的部分时，部分正在关闭但我正在关注异常。

!ENTRY org.eclipse.equinox.event 4 0 2014-01-21 14:50:02.377
!MESSAGE Exception while dispatching event org.osgi.service.event.Event [topic=org/eclipse/e4/ui/model/ui/UIElement/toBeRendered/SET] to handler org.eclipse.e4.ui.services.internal.events.UIEventHandler@88c615
!STACK 0
java.lang.IllegalArgumentException: 
    at org.eclipse.core.runtime.Assert.isLegal(Assert.java:63)
    at org.eclipse.core.runtime.Assert.isLegal(Assert.java:47)
    at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findElementsRecursive(ModelServiceImpl.java:286)
    at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findElements(ModelServiceImpl.java:371)
    at org.eclipse.ui.internal.WorkbenchPage.unzoomSharedArea(WorkbenchPage.java:5132)
    at org.eclipse.ui.internal.WorkbenchPage.unzoomSharedArea(WorkbenchPage.java:5153)
    at org.eclipse.ui.internal.WorkbenchPage.access$13(WorkbenchPage.java:5151)
    at org.eclipse.ui.internal.WorkbenchPage$6.handleEvent(WorkbenchPage.java:5197)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4688)
    at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:205)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
    at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
    at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
    at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
    at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
    at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:80)
    at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)
    at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
    at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:290)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1160)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.hidePart(PartServiceImpl.java:1095)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.closePart(StackRenderer.java:1069)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.access$5(StackRenderer.java:1051)
    at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer$11.close(StackRenderer.java:945)
    at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1833)
    at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:283)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at com.infineon.scm.Application.start(Application.java:22)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    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:354)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1426)

它的作用（以下情况不例外）：

1. 如果我删除 Area 并且只使用 PartStack 则它可以工作并且我没有收到任何异常。
2. 即使在我的应用程序中，我也在重用 JSDT 透视图，如果我在 JSDT 的编辑器区域中打开相同的部分并且如果我关闭它，那么它也可以工作（无例外）。

我错过了什么吗？

Answer 1

MArea 是在 Eclipse 4 中通过支持共享“编辑器”区域实现的，并且很可能在其中有一些逻辑漏洞用于其他用途，尤其是在没有透视图的情况下（是这种情况吗？）。