Question

上一个问题： Visual Studio Extension: How to disable native command?

我构建了一个扩展，可以正确管理Git模块，为此，我在解决方案中有一个名为SubModules的文件夹。

我设法将上下文菜单添加到解决方案文件和项目文件中，但是我想在右键单击SubModules文件夹（例如，删除，添加）时禁用一些本机命令。

我现在知道如何禁用所需的本机命令，但要这样做，我需要获取所选解决方案文件夹的“路径”。

我尝试实现IVsSelectionEvents，但没有运气（o在转换前不为null）：

public int OnSelectionChanged(IVsHierarchy pHierOld, uint itemidOld, IVsMultiItemSelect pMISOld, ISelectionContainer pSCOld, IVsHierarchy pHierNew, uint itemidNew, IVsMultiItemSelect pMISNew, ISelectionContainer pSCNew)
{
    var o = GetProjectItem(pHierNew, itemidNew);
    return VSConstants.S_OK;
}

private static ProjectItem GetProjectItem(IVsHierarchy hierarchy, uint itemId)
{
    object o;
    if (hierarchy.GetProperty(itemId, (int)__VSHPROPID.VSHPROPID_ExtObject, out o) == VSConstants.S_OK)
    {
        var t = o as SolutionFolder; // ==> null

        return o as ProjectItem; // ==> null
    }
    return null;
}

使用我的代码（从另一个问题开始）（我想在其中找到“路径”，但是可以使用上面的“解决方案”进行管理），我尝试将其强制转换为SolutionFolder或FileProperties ...仍然没有运气；即使MSDN告诉返回的对象应该是FileProperties类型。在(Marshal.GetObjectForIUnknown(selectionContainerPtr) as ISelectionContainer)上使用QuickWatch进行浏览，我可以进入私有属性_nodes，在那里，我可以看到我的SolutionFolder节点，并使用其Parent属性来确定它是我要阻止的文件夹命令。这是实际的代码：

private static void CommandEvents_BeforeExecute(string Guid, int ID, object CustomIn, object CustomOut, ref bool CancelDefault)
{
    string name = GetCommandName(Guid, ID);

    if (name == "Project.AddNewSolutionFolder")
    {
        CancelDefault = true;
    }
    if (name == "Edit.Delete")
    {
        CancelDefault = true;

        IVsMultiItemSelect multiItemSelect = null;
        IntPtr hierarchyPtr = IntPtr.Zero;
        IntPtr selectionContainerPtr = IntPtr.Zero;
        uint itemid = 0;

        int hr = monitorSelection.GetCurrentSelection(out hierarchyPtr, out itemid, out multiItemSelect, out selectionContainerPtr);
        object[] selected = new object[2];
        (Marshal.GetObjectForIUnknown(selectionContainerPtr) as ISelectionContainer).GetObjects(2, 1, selected);


        var t = selected[0] as VSLangProj.FileProperties; // ==> null
        var t2 = selected[0] as SolutionFolder; // ==> null
        var b = 1;
    }

    if (name == "View.Branch")
    {
        //TODO: Could disable this command if not able to find the branch changing command (that would be cancelled and launch ours)
        menuBranchOpened = true;
    }

    if (menuBranchOpened)
    {
        var a = 1;
    }

}

我受到启发并尝试过（除了上面的那个似乎真的很接近之外，没有任何工作）：

Answer 1

最后，浏览（更多）回答我上一个问题的其他人的网站，我终于找到了。因此，我将分享一种我知道在解决方案资源管理器中选择了哪种类型的项目的方法。

applicationObject = await ServiceProvider.GetGlobalServiceAsync(typeof(SDTE)) as DTE2; // Was initiate in a method

private enum SelectionTypes
{
    Other = 0,
    InSubModules = 1,
    IsAFolder = 2,
    IsAProject = 4,
    InAProject = 8
}

private static List<SelectionTypes> GetSelectionTypes()
{
    ThreadHelper.ThrowIfNotOnUIThread();
    var selectionTypes = new List<SelectionTypes>();

    EnvDTE.UIHierarchy solutionExplorer = applicationObject.ToolWindows.SolutionExplorer;
    object[] items = solutionExplorer.SelectedItems as object[];
    //{ Name = "WindowBase" FullName = "Microsoft.VisualStudio.Platform.WindowManagement.DTE.WindowBase"}
    if (items.Length > 0)
    {
        for (int i = 0; i < items.Length; i++)
        {
            var selectionType = SelectionTypes.Other;
            var selectedItem = items[0] as EnvDTE.UIHierarchyItem;
            var currentItem = selectedItem;
            var subModulesParentsCount = 0;
            var countingSubModulesParents = false;
            var nbParents = -1;

            if (currentItem.Object.GetType().FullName == "Microsoft.VisualStudio.ProjectSystem.VS.Implementation.Package.Automation.OAProject") selectionType |= SelectionTypes.IsAProject;
            if (currentItem.Object.GetType().FullName == "Microsoft.VisualStudio.ProjectSystem.VS.Implementation.Package.Automation.OAFolderItem") selectionType |= SelectionTypes.IsAFolder;

            while (currentItem != null)
            {
                nbParents++;
                if (countingSubModulesParents) subModulesParentsCount++;

                if (currentItem.Name == "SubModules")
                {
                    subModulesParentsCount = 0;
                    countingSubModulesParents = true;
                }

                if (currentItem.Object.GetType().FullName == "Microsoft.VisualStudio.ProjectSystem.VS.Implementation.Package.Automation.OAProject") selectionType |= SelectionTypes.InAProject;

                currentItem = currentItem.Collection.Parent as EnvDTE.UIHierarchyItem;
            }

            if (selectionType == SelectionTypes.Other && nbParents != 0) selectionType |= SelectionTypes.IsAFolder;

            if (subModulesParentsCount == 1)
            {
                selectionType |= SelectionTypes.InSubModules;
            }

            selectionTypes.Add(selectionType);
        }
    }

    return selectionTypes;
}

Visual Studio扩展：如何在选择时获取解决方案文件夹的“路径”？

1 个答案: