我正在开发一个 Visual Studio 扩展,其中一个已实现的命令仅在事件文档是文本文档时才需要可用(例如 Visual Studio 的“切换书签”)。问题是我无法弄清楚如何判断何时是这种情况。
现在我有一个半工作的解决方案。在包的 Initialize
方法中,我订阅了 DTE 的 WindowActivated
事件,然后每当窗口被激活时,我检查窗口 DocumentData
属性是否属于类型文本文档
:
protected override void Initialize()
{
base.Initialize();
var dte = Package.GetGlobalService(typeof(EnvDTE.DTE)) as EnvDTE.DTE;
dte.Events.WindowEvents.WindowActivated += WindowEventsOnWindowActivated;
//More initialization here...
}
//This is checked from command's BeforeQueryStatus
public bool ActiveDocumentIsText { get; private set; } = false;
private void WindowEventsOnWindowActivated(Window gotFocus, Window lostFocus)
{
if (gotFocus.Kind != "Document")
return; //It's not a document (e.g. it's a tool window)
TextDocument textDoc = gotFocus.DocumentData as TextDocument;
ActiveDocumentIsText = textDoc != null;
}
这种方法的问题在于 1) Window.DocumentData is documented as ".NET Framework internal use only" , 和 2) 当在设计模式下打开同时具有代码 View 和设计 View (例如 .visxmanifest
文件)的文档时,这会产生误报。
我试过使用IVsTextManager.GetActiveView同样,但这将返回打开的最后事件 TextView - 因此,如果我打开一个 .txt 文件,然后打开一个 .png 文件,它会返回 .txt 文件的数据,即使它不是事件的不再记录。
那么,我该如何检查事件文档是文本文档,还是可以拥有设计器的文档的代码 View ...如果可能,不使用“未记录的”类/成员?
更新:我找到了一个稍微好一点的解决方案。在窗口内激活处理程序:
ActiveDocumentIsText = gotFocus.Document.Object("TextDocument") != null;
至少this one is properly documented , 但我仍然遇到设计师误报的问题。
最佳答案
我终于明白了。这有点棘手,但它有效并且 100%“合法”。这是食谱:
1- 使包类实现 IVsRunningDocTableEvents .让所有的方法都只是return VSConstants.S_OK;
2- 将以下字段和以下辅助方法添加到包类中:
private IVsRunningDocumentTable runningDocumentTable;
private bool DocIsOpenInLogicalView(string path, Guid logicalView, out IVsWindowFrame windowFrame)
{
return VsShellUtilities.IsDocumentOpen(
this,
path,
VSConstants.LOGVIEWID_TextView,
out var dummyHierarchy2, out var dummyItemId2,
out windowFrame);
}
3- 将以下内容添加到包类的 Initialize
方法中:
runningDocumentTable = GetService(typeof(SVsRunningDocumentTable)) as IVsRunningDocumentTable;
runningDocumentTable.AdviseRunningDocTableEvents(this, out var dummyCookie);
4- 别眨眼,魔法来了!实现IVsRunningDocTableEvents.OnBeforeDocumentWindowShow
方法如下:
public int OnBeforeDocumentWindowShow(uint docCookie, int fFirstShow, IVsWindowFrame pFrame)
{
runningDocumentTable.GetDocumentInfo(docCookie,
out var dummyFlags, out var dummyReadLocks, out var dummyEditLocks,
out string path,
out var dummyHierarchy, out var dummyItemId, out var dummyData);
IVsWindowFrame windowFrameForTextView;
var docIsOpenInTextView =
DocIsOpenInLogicalView(path, VSConstants.LOGVIEWID_Code, out windowFrameForTextView) ||
DocIsOpenInLogicalView(path, VSConstants.LOGVIEWID_TextView, out windowFrameForTextView);
//Is the document open in the code/text view,
//AND the window for that view is the one that has been just activated?
ActiveDocumentIsText = docIsOpenInTextView && pFrame == logicalViewWindowFrame;
return VSConstants.S_OK;
}
关于visual-studio - 如何判断事件文档是否为文本文档?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46671217/