对E4进行重置透视图时发生错误 [英] when reset perspective is done on E4 error occurs

问题描述

按指定链接完成重置后的透视图代码

When reset Perspective code is done as in the given link https://www.eclipse.org/forums/index.php/m/1209165/srch=reset+perspective+in+e4#msg_1209165 and code called is The code is as follows

public class ResetPerspective {
// private static final String MAIN_PERSPECTIVE_STACK_ID = "MainPerspectiveStack";

 @Execute
 public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell,
        EModelService modelService, MApplication app,
        EPartService partService) {

    MWindow window = (MWindow) modelService.find("Main", app);  //main

    final MPerspective perspective = modelService.getActivePerspective(window);

    final MUIElement snippet = modelService.cloneSnippet(app,
            perspective.getElementId(), window);
    snippet.setToBeRendered(true);
    if (snippet != null) {
        MElementContainer<MUIElement> parent = perspective.getParent();
        perspective.setToBeRendered(false);

        List<MWindow> existingDetachedWindows = new ArrayList<MWindow>();
        existingDetachedWindows.addAll(perspective.getWindows());



        MPerspective dummyPerspective = (MPerspective) snippet;
        while (dummyPerspective.getWindows().size() > 0) {
            MWindow detachedWindow = dummyPerspective.getWindows()
                    .remove(0);
            perspective.getWindows().add(detachedWindow);
        }

        parent.getChildren().remove(perspective);

        parent.getChildren().add(snippet);
        System.out.println(parent.getChildren().get(0).getElementId());
        partService.switchPerspective((MPerspective) snippet);
    }
 }

}

并选择了重置透视图，将出现以下错误 错误如下

and reset perspective is selected gives the following error The error is as follows

!ENTRY org.eclipse.e4.ui.workbench 4 0 2014-06-10 11:28:54.063
!MESSAGE Internal Error
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.IllegalArgumentException: 
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
    at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:243)
    at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:224)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
    at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:167)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:213)
    at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:850)
    at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:743)
    at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$7(HandledContributionItem.java:727)
    at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$4.handleEvent(HandledContributionItem.java:662)
    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:140)
    at org.eclipse.e4.ui.internal.workbench.swt.E4Application.start(E4Application.java:162)
    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(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    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)
Caused by: 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.e4.ui.internal.workbench.ModelServiceImpl.getActivePerspective(ModelServiceImpl.java:1075)
    at bomb.handlers.ResetPerspective.execute(ResetPerspective.java:44)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
    ... 33 more

推荐答案

应用程序模型中似乎没有ID为"Main"的窗口，因此modelService.find("Main", app)返回null. null是modelService.getActivePerspective(window)的非法参数，因此会出现错误.

It looks like you do not have a window in your application model with the id "Main" so modelService.find("Main", app) is returning null. null is an illegal argument for modelService.getActivePerspective(window) so you get an error.

您必须修改发现的代码以将id用于您的应用程序.您还必须遵循为透视图创建代码片段的说明.

You must adapt this code you found to use the ids for your application. You must also follow the instructions for creating snippets for the perspectives.

这篇关于对E4进行重置透视图时发生错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！