问如何为Eclipse应用程序重置透视图？

EN

我认为这可以节省别人的时间，也可以为我自己记录。

能够重置e4透视图的诀窍如下(假设基本application.e4xmi具有PerspectiveStack元素)：

1. 在application.e4xmi文件中，在应用程序/TrimmedWindow节点下找到您的PerspectiveStack。记录/设置其ID。
2. 在Eclipse4ModelEditor中，将透视图从PerspectiveStack下面拖到应用程序/代码段。(这将导致透视图ID向IPerspectiveRegistry注册，并提供原始状态)。
3. 创建新的CopyPerspectiveSnippetProcessor。这将在启动时将片段中的透视图复制到PerspectiveStack中。这使得您不必维护e4xmi文件中每个透视图元素的两个副本。 进口org.eclipse.e4.ui.model.application.MApplication；org.eclipse.e4.ui.model.application.ui.MUIElement；org.eclipse.e4.ui.model.application.ui.MUIElement；org.eclipse.e4.ui.model.application.ui.advanced.MPerspective；org.eclipse.e4.ui.model.application.ui.advanced.MPerspectiveStack；org.eclipse.e4.ui.model.application.ui.advanced.MPerspectiveStack；org.eclipse.e4.ui.workbench.modeling.EModelService；/** *将所有片段透视图复制到称为"MainPerspectiveStack“的透视图堆栈中，以便注册/重置透视图，而不必在* e4xmi中同步两个副本。* */公共类CopyPerspectiveSnippetProcessor {私有静态最终字符串MAIN_PERSPECTIVE_STACK_ID = "MainPerspectiveStack"；@ Execute (EModelService modelService，MApplication应用程序){ MPerspectiveStack perspectiveStack = (MPerspectiveStack) modelService.find(MAIN_PERSPECTIVE_STACK_ID，application)；//仅在没有其他子级或恢复的工作区状态将被覆盖时执行此操作。如果(!perspectiveStack.getChildren().isEmpty())返回；//克隆作为透视图的每个片段，并将所克隆的透视图添加到主要的PerspectiveStack布尔isFirst = true；for (MUIElement代码段: application.getSnippets()) { if (snippet.getElementId){ MPerspective perspectiveClone = (MPerspective) modelService.cloneSnippet(应用程序，snippet.getElementId()，null)；if ( isFirst ) {isFirst isFirst= false；}
4. 将CopyPerspectiveSnippetProcess注册到plugin.xml文件中。
5. 将透视图重置为正常。您还需要将透视图堆栈和当前透视图设置为可见，因为有时可以将这些设置为不可见。示例处理程序可能如下所示： 导入org.eclipse.e4.ui.model.application.MApplication；org.eclipse.e4.ui.model.application.ui.advanced.MPerspectiveStack；org.eclipse.e4.ui.model.application.ui.advanced.MPerspectiveStack；org.eclipse.e4.ui.workbench.modeling.EModelService；org.eclipse.e4.core.di.annotations.Execute org.eclipse.ui.PlatformUI；公共类ResetPerspectiveHandler {私有静态最终字符串MAIN_PERSPECTIVE_STACK_ID = "MainPerspectiveStack"；@ Execute (EModelService modelService，MApplication应用程序){ MPerspectiveStack perspectiveStack = (MPerspectiveStack) modelService.find(MAIN_PERSPECTIVE_STACK_ID，application)；EModelService perspectiveStack.getSelectedElement().setVisible(true)；perspectiveStack.setVisible(true)；}}

重置透视图(当您午餐e4应用程序而没有清除工作空间时，当您切换其他透视图时)。

步骤1:在应用程序级别的模型片段中添加一个外接程序。

​

步骤2:创建附加类并实现EventHandler

步骤3:在类中添加以下代码。

public class ResetPrespectiveAddOn implements EventHandler {

private static final String MY_PERSPECTIVE_ID = "myPrespectiveId";

@Inject
private IEventBroker broker;

@PostConstruct
public void loadPrespective() {

    broker.subscribe(UIEvents.ElementContainer.TOPIC_SELECTEDELEMENT, this);
}

@SuppressWarnings("restriction")
@Override
public void handleEvent(Event event) {

    //UIEvents.EventTags.ELEMENT is trigger  for all UI activity
    Object property = event.getProperty(UIEvents.EventTags.ELEMENT);
    if (!(property instanceof PerspectiveStackImpl)) {
        return;

    }

    // Reset perspective logic .
    IEclipseContext serviceContext = E4Workbench.getServiceContext();
    final IEclipseContext appContext = (IEclipseContext) serviceContext.getActiveChild();
    EModelService modelService = appContext.get(EModelService.class);
    MApplication application = serviceContext.get(MApplication.class);
    MWindow mWindow = application.getChildren().get(0);

    PerspectiveStackImpl perspectiveStack = (PerspectiveStackImpl) property;
    List<MPerspective> children = perspectiveStack.getChildren();
    for (MPerspective myPerspective : children) {
        if (myPerspective.getElementId().equals(MY_PERSPECTIVE_ID)) {

            //find active perspective
            MPerspective activePerspective = modelService.getActivePerspective(mWindow);
            if(activePerspective.getElementId().equals(MY_PERSPECTIVE_ID))

            //Reseting perspective  e3 way 
            PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().resetPerspective();


            // till now there is no direct e4 way to reset perspective 
            // but u can Add and remove e4 perspective with this code code              
            EPartService partService = serviceContext.get(EPartService.class);
            MPerspectiveStack perspectiveStack = (MPerspectiveStack) (MElementContainer<?>) activePerspective.getParent();
            int indexOf = perspectiveStack.getChildren().indexOf(activePerspective);
            perspectiveStack.getChildren().remove(indexOf);

            perspectiveStack.getChildren().add(myPerspective);
            partService.switchPerspective(myPerspective);
        }   
    }
}}