Java 如何在eclipse中获取项目名称？

How to get the project name in eclipse?

提问by Alexander Stolz

How do I get the name of the current eclipse project? I'm in a GMF view and need the projectname when some submenu of the popup menu ist used.

如何获取当前 eclipse 项目的名称？我在 GMF 视图中，当使用弹出菜单的某些子菜单时需要项目名称。

采纳答案by VonC

This GMF classhas a straightforward answer, if you have access to the ResourcesPlugin name:

如果您有权访问 ResourcesPlugin 名称，则此GMF 类有一个简单的答案：

IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(myBundleName);

The generic answer (from a potentially outdated code) could be like (if you have an editor opened):

通用答案（来自可能过时的代码）可能类似于（如果您打开了编辑器）：

IEditorPart  editorPart =
getSite().getWorkbenchWindow().getActivePage().getActiveEditor();

if(editorPart  != null)
{
    IFileEditorInput input = (IFileEditorInput)editorPart.getEditorInput() ;
    IFile file = input.getFile();
    IProject activeProject = file.getProject();
    String activeProjectName = activeProject.getName();
    //... use activeProjectName 
}

If no editor is opened:

如果没有打开编辑器：

   IViewPart [] parts =
      MyPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage().getViews();
    IProject activeProject = null;

    for(int i=0;i<parts.length;i++)
    {
        if(parts[i] instanceof ResourceNavigator)
        {
            ResourceNavigator navigator = (ResourceNavigator)parts[i];
            StructuredSelection sel   =
              (StructuredSelection)navigator.getTreeViewer().getSelection();
            IResource resource = (IResource)sel.getFirstElement();
            activeProject = resource.getProject();
            break;
        }
    }
    String activeProjectName = activeProject .getName();

回答by Rich Seller

Using the selection service will give you the currently selected object, you can then check the selection type and get the project based on the selection.

使用选择服务将为您提供当前选择的对象，然后您可以检查选择类型并根据选择获取项目。

If you create an ISelectionListener and register as a listener on the ISelectionService, you'll be notified whenever the active selection changes, and be given a reference to the selection and the owning part.

如果您创建一个 ISelectionListener 并在 ISelectionService 上注册为侦听器，则每当活动选择更改时都会通知您，并获得对选择和拥有部分的引用。

ISelectionListener listener = new ISelectionListener() {
    public void selectionChanged(IWorkbenchPart sourcePart, ISelection selection) {
        setSourcePart(sourcePart);
        setSelection(selection);
    }
};

...
//register the listener
selectionService.addSelectionListener(listener);

...
//either get the selection service and get the selection, or use the stored version from the listener
ISelectionService selectionService = 
    Workbench.getInstance().getActiveWorkbenchWindow().getSelectionService();

ISelection selection = selectionService.getSelection();

if(selection instanceof IStructuredSelection) {
    Object element = ((IStructuredSelection)selection).getFirstElement();

    IProject project;
    if (element instanceof IResource) {
        project= ((IResource)element).getProject();
    } else if (element instanceof PackageFragmentRootContainer) {
        IJavaProject jProject = 
            ((PackageFragmentRootContainer)element).getJavaProject();
        project = jProject.getProject();
    } else if (element instanceof IJavaElement) {
        IJavaProject jProject= ((IJavaElement)element).getJavaProject();
        project = jProject.getProject();
    }
} else if (selection instanceof ITextSelection) {
    if(sourcePart instanceof JavaEditor) {
        IJavaElement element = SelectionConverter.resolveEnclosingElement(sourcePart, selection);
        project = element.getJavaProject().getProject();
    }
}

See this article on the Eclipse selection servicefor more details.

有关更多详细信息，请参阅有关 Eclipse 选择服务的这篇文章。

回答by mchr

Rich Seller and VonC have both provided good answers but they didn't seem complete enough/used internal classes. I have come up with the following.

Rich Seller 和 VonC 都提供了很好的答案，但它们似乎不够完整/使用内部类。我想出了以下内容。

@Override
public void createPartControl(Composite parent)
{
  ....

  // Register to be notified about selections
  getSite().getWorkbenchWindow().getSelectionService()
      .addPostSelectionListener(this);

  // Detect the current selection
  detectCurrentSelection();
}

@Override
public void selectionChanged(IWorkbenchPart part, ISelection selection)
{
  IProject project = convertSelection(part, selection);
  setProject(project);
}

private void detectCurrentSelection()
{
  IProject project = null;

  IWorkbenchWindow window = getSite().getWorkbenchWindow();
  IWorkbenchPage activePage = window.getActivePage();

  if (activePage != null)
  {
    IEditorPart part = activePage.getActiveEditor();

    if (part != null)
    {
      project = convertSelection(part);
    }
    else
    {
      IViewReference[] viewReferences = activePage.getViewReferences();

      for (IViewReference viewRef : viewReferences)
      {
        IViewPart view = viewRef.getView(false);
        ISelection selection = null;

        if (view instanceof IPackagesViewPart)
        {
          IPackagesViewPart viewPart = (IPackagesViewPart) view;
          TreeViewer treeViewer = viewPart.getTreeViewer();
          selection = treeViewer.getSelection();
        }
        else if (view instanceof CommonNavigator)
        {
          CommonNavigator navigator = (CommonNavigator) view;
          CommonViewer commonViewer = navigator.getCommonViewer();
          selection = commonViewer.getSelection();
        }

        if (selection instanceof IStructuredSelection)
        {
          IStructuredSelection structuredSelection = (IStructuredSelection) selection;

          project = convertSelection(structuredSelection);

          if (project != null)
            break;
        }
      }
    }
  }

  setProject(project);
}

private IProject convertSelection(IWorkbenchPart part, ISelection selection)
{
  IProject project = null;
  if (selection instanceof IStructuredSelection)
  {
    IStructuredSelection structuredSelection = (IStructuredSelection) selection;
    project = convertSelection(structuredSelection);
  }
  else if (selection instanceof ITextSelection)
  {
    if (part instanceof IEditorPart)
    {
      IEditorPart editorPart = (IEditorPart) part;
      IResource resource = (IResource)editorPart.getEditorInput().getAdapter(IResource.class);
      if (resource != null)
      {
        project = resource.getProject();
      }
    }
  }

  return project;
}

private IProject convertSelection(IEditorPart part)
{
  IProject project = null;
  IResource resource = (IResource)part.getEditorInput().getAdapter(IResource.class);
  if (resource != null)
  {
    project = resource.getProject();
  }
  return project;
}

private IProject convertSelection(IStructuredSelection structuredSelection)
{
  IProject project = null;
  Object element = structuredSelection.getFirstElement();

  if (element instanceof IResource)
  {
    project = ((IResource) element).getProject();
  }
  else if (element instanceof IJavaElement)
  {
    IJavaElement javaElement = (IJavaElement) element;
    project = javaElement.getJavaProject().getProject();
  }
  else if (element instanceof IAdaptable)
  {
    IAdaptable adaptable = (IAdaptable) element;
    IWorkbenchAdapter adapter = (IWorkbenchAdapter) adaptable.getAdapter(IWorkbenchAdapter.class);
    if (adapter != null)
    {
      Object parent = adapter.getParent(adaptable);
      if (parent instanceof IJavaProject)
      {
        IJavaProject javaProject = (IJavaProject) parent;
        project = javaProject.getProject();
      }
    }
  }

  return project;
}

回答by Mindaugas Jaraminas

I have created a nice function from the posts above, plus added some updates. Works with current eclipse.

我从上面的帖子中创建了一个不错的功能，并添加了一些更新。适用于当前日食。

public static IProject getCurrentSelectedProject() {
    IProject project = null;
    ISelectionService selectionService = 
        PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService();

    ISelection selection = selectionService.getSelection();

    if(selection instanceof IStructuredSelection) {
        Object element = ((IStructuredSelection)selection).getFirstElement();

        if (element instanceof IResource) {
            project= ((IResource)element).getProject();
        } else if (element instanceof PackageFragmentRoot) {
            IJavaProject jProject = 
                ((PackageFragmentRoot)element).getJavaProject();
            project = jProject.getProject();
        } else if (element instanceof IJavaElement) {
            IJavaProject jProject= ((IJavaElement)element).getJavaProject();
            project = jProject.getProject();
        }
    }
    return project;
}