如何从 Eclipse 插件获取包资源管理器中的选定节点
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How to get the selected node in the package explorer from an Eclipse plugin
提问by Benjamin
I'm writing an Eclipse command plugin and want to retrieve the currently selected node in the package explorer view. I want to be able to get the absolute filepath, where the selected node resides on the filesystem (i.e. c:\eclipse\test.html), from the returned result.
我正在编写一个 Eclipse 命令插件，并希望在包资源管理器视图中检索当前选定的节点。我希望能够从返回的结果中获取绝对文件路径，其中所选节点驻留在文件系统（即 c:\eclipse\test.html）上。
How do I do this ?
我该怎么做呢 ？
回答by Fabian Steeg
The first step is to get a selection service, e.g. from any view or editor like this:
第一步是获取选择服务，例如从任何视图或编辑器中获取，如下所示：
ISelectionService service = getSite().getWorkbenchWindow()
.getSelectionService();
Or, as VonC wrote, you could get it via the PlatformUI, if you are neither in a view or an editor.
或者，如 VonC 所写，如果您既不在视图中也不在编辑器中，则可以通过 PlatformUI 获取它。
Then, get the selection for the Package Explorer and cast it to an IStructuredSelection:
然后，获取 Package Explorer 的选择并将其转换为 IStructuredSelection：
IStructuredSelection structured = (IStructuredSelection) service
.getSelection("org.eclipse.jdt.ui.PackageExplorer");
From that, you can get your selected IFile:
从中，您可以获得您选择的 IFile：
IFile file = (IFile) structured.getFirstElement();
Now to get the full path, you will have to get the location for the IFile:
现在要获取完整路径，您必须获取 IFile 的位置：
IPath path = file.getLocation();
Which you then can finally use to get the real full path to your file (among other things):
然后您最终可以使用它来获取文件的真实完整路径（除其他外）：
System.out.println(path.toPortableString());
You can find more information on the selection service here: Using the Selection Service.
您可以在此处找到有关选择服务的更多信息：使用选择服务。
回答by VonC
The code would be like:
代码如下：
IWorkbenchWindow window =
PlatformUI.getWorkbench().getActiveWorkbenchWindow();
ISelection selection = window.getSelectionService().getSelection("org.eclipse.jdt.ui.PackageExplorer");
You view an example in an Action like this LuaFileWizardAction class.
您可以在类似LuaFileWizardAction 类的 Action 中查看示例。
