root / trunk / Pithos.ShellExtensions / Menus / FileContextMenu.cs @ c92e02f3
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using System; |
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using System.Collections.Generic; |
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using System.ComponentModel.Composition; |
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using System.Diagnostics; |
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using System.Diagnostics.Contracts; |
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using System.Drawing; |
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using System.Linq; |
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using System.Runtime.InteropServices; |
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using System.Runtime.InteropServices.ComTypes; |
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using System.Text; |
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using Pithos.ShellExtensions.Properties; |
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|
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namespace Pithos.ShellExtensions.Menus |
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{
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[ClassInterface(ClassInterfaceType.None)] |
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[Guid("B1F1405D-94A1-4692-B72F-FC8CAF8B8700"), ComVisible(true)]
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public class FileContextMenu : IShellExtInit, IContextMenu |
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{
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private static readonly log4net.ILog Log = log4net.LogManager.GetLogger("Pithos.FileContextMenu");
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private const string MenuHandlername = "Pithos.FileContextMenu"; |
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|
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private readonly Dictionary<string, MenuItem> _items; |
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|
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|
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[Import] |
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public FileContext Context { get; set; }
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|
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private IntPtr _gotoBitmap=IntPtr.Zero; |
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private IntPtr _versionBitmap = IntPtr.Zero; |
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private IntPtr _propertiesBitmap = IntPtr.Zero; |
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|
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public FileContextMenu() |
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{
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_gotoBitmap = GetBitmapPtr(Resources.MenuGoToPithos); |
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_versionBitmap = GetBitmapPtr(Resources.MenuHistory); |
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_propertiesBitmap = GetBitmapPtr(Resources.MenuProperties); |
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_items = new Dictionary<string, MenuItem>{
|
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{"gotoPithos",new MenuItem{
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MenuText = "&Go to Pithos", |
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Verb = "gotoPithos", |
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VerbCanonicalName = "PITHOSGoTo", |
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VerbHelpText = "Go to Pithos", |
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MenuDisplayId = 1, |
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MenuCommand=OnGotoPithos, |
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DisplayFlags=DisplayFlags.All, |
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MenuBitmap = _gotoBitmap |
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}}, |
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{"showProperties",new MenuItem{
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MenuText = "&Pithos Properties", |
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Verb = "showProperties", |
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VerbCanonicalName = "PITHOSProperties", |
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VerbHelpText = "Pithos Properties", |
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MenuDisplayId = 2, |
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MenuCommand=OnShowProperties, |
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DisplayFlags=DisplayFlags.All, |
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MenuBitmap = _propertiesBitmap |
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}}/*, |
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{"prevVersions",new MenuItem{
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MenuText = "&Show Previous Versions", |
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Verb = "prevVersions", |
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VerbCanonicalName = "PITHOSPrevVersions", |
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VerbHelpText = "Go to Pithos and display previous versions", |
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MenuDisplayId = 3, |
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MenuCommand=OnVerbDisplayFileName, |
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DisplayFlags=DisplayFlags.File, |
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MenuBitmap=_versionBitmap |
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}}*/ |
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}; |
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|
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IoC.Current.Compose(this); |
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|
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|
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} |
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|
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~FileContextMenu() |
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{
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if (_gotoBitmap != IntPtr.Zero) |
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{
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NativeMethods.DeleteObject(_gotoBitmap); |
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_gotoBitmap= IntPtr.Zero; |
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} |
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if (_versionBitmap != IntPtr.Zero) |
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{
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NativeMethods.DeleteObject(_versionBitmap); |
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_versionBitmap = IntPtr.Zero; |
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} |
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if (_propertiesBitmap != IntPtr.Zero) |
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{
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NativeMethods.DeleteObject(_propertiesBitmap); |
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_propertiesBitmap = IntPtr.Zero; |
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} |
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|
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} |
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private static IntPtr GetBitmapPtr(Bitmap gotoBitmap) |
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{
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gotoBitmap.MakeTransparent(gotoBitmap.GetPixel(0, 0)); |
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var hbitmap = gotoBitmap.GetHbitmap(); |
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return hbitmap; |
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} |
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|
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void OnShowProperties(IntPtr hWnd) |
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{
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var filePath = Context.CurrentFile ?? Context.CurrentFolder; |
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if (String.IsNullOrWhiteSpace(filePath)) |
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{
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Debug.WriteLine("No current file or folder");
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return; |
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} |
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else |
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{
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Debug.WriteLine("Will display properties for {0}",filePath);
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} |
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|
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var client = PithosHost.GetCommandsClient(); |
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client.BeginShowProperties(Context.CurrentFile,c=> |
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{
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try |
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{
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c.AsyncWaitHandle.WaitOne(); |
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client.Close(); |
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} |
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catch (Exception exc) |
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{
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Trace.WriteLine(exc.ToString()); |
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} |
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},null); |
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|
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} |
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|
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void OnVerbDisplayFileName(IntPtr hWnd) |
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{
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string message = String.Format("The selected file is {0}\r\n\r\nThe selected Path is {1}",
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Context.CurrentFile, |
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Context.CurrentFolder); |
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System.Windows.Forms.MessageBox.Show( |
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message, |
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"Pithos Shell Extensions"); |
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NativeMethods.SHChangeNotify(HChangeNotifyEventID.SHCNE_ASSOCCHANGED, HChangeNotifyFlags.SHCNF_IDLIST, |
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IntPtr.Zero, IntPtr.Zero); |
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} |
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|
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void OnGotoPithos(IntPtr hWnd) |
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{
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var settings = Context.Settings; |
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var activeAccount = settings.Accounts.FirstOrDefault(acc => Context.CurrentFile.StartsWith(acc.RootPath,StringComparison.InvariantCultureIgnoreCase)); |
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var address = String.Format("{0}/ui/?token={1}&user={2}",
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settings.PithosSite, |
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activeAccount.ApiKey, |
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Uri.EscapeUriString(activeAccount.AccountName)); |
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|
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settings.Reload(); |
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Process.Start(address); |
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} |
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|
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#region Shell Extension Registration |
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|
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[ComRegisterFunction] |
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public static void Register(Type t) |
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{
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try |
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{
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ShellExtReg.RegisterShellExtContextMenuHandler(t.GUID, ".cs", |
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MenuHandlername); |
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ShellExtReg.RegisterShellExtContextMenuHandler(t.GUID, "Directory", |
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MenuHandlername); |
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ShellExtReg.RegisterShellExtContextMenuHandler(t.GUID, @"Directory\Background", |
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MenuHandlername); |
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ShellExtReg.RegisterShellExtContextMenuHandler(t.GUID, "*", |
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MenuHandlername); |
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|
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//ShellExtReg.MarkApproved(t.GUID, MenuHandlername); |
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} |
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catch (Exception ex) |
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{
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Console.WriteLine(ex.Message); // Log the error |
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throw; // Re-throw the exception |
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} |
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} |
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|
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[ComUnregisterFunction] |
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public static void Unregister(Type t) |
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{
|
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try |
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{
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ShellExtReg.UnregisterShellExtContextMenuHandler(t.GUID, ".cs", MenuHandlername); |
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ShellExtReg.UnregisterShellExtContextMenuHandler(t.GUID, "Directory", MenuHandlername); |
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ShellExtReg.UnregisterShellExtContextMenuHandler(t.GUID, @"Directory\Background", MenuHandlername); |
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ShellExtReg.UnregisterShellExtContextMenuHandler(t.GUID, "*", MenuHandlername); |
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|
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//ShellExtReg.RemoveApproved(t.GUID, MenuHandlername); |
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} |
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catch (Exception ex) |
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{
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Console.WriteLine(ex.Message); // Log the error |
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throw; // Re-throw the exception |
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} |
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} |
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|
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#endregion |
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#region IShellExtInit Members |
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|
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/// <summary> |
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/// Initialize the context menu handler. |
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/// </summary> |
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/// <param name="pidlFolder"> |
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/// A pointer to an ITEMIDLIST structure that uniquely identifies a folder. |
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/// </param> |
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/// <param name="pDataObj"> |
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/// A pointer to an IDataObject interface object that can be used to retrieve |
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/// the objects being acted upon. |
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/// </param> |
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/// <param name="hKeyProgID"> |
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/// The registry key for the file object or folder type. |
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/// </param> |
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public void Initialize(IntPtr pidlFolder, IntPtr pDataObj, IntPtr hKeyProgID) |
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{
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|
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if(pDataObj == IntPtr.Zero && pidlFolder == IntPtr.Zero) |
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{
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throw new ArgumentException("pidlFolder and pDataObj shouldn't be null at the same time");
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} |
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Debug.WriteLine("Initializing", LogCategories.ShellMenu);
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if (pDataObj != IntPtr.Zero) |
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{
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Debug.WriteLine("Got a data object", LogCategories.ShellMenu);
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FORMATETC fe = new FORMATETC(); |
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fe.cfFormat = (short)CLIPFORMAT.CF_HDROP; |
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fe.ptd = IntPtr.Zero; |
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fe.dwAspect = DVASPECT.DVASPECT_CONTENT; |
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fe.lindex = -1; |
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fe.tymed = TYMED.TYMED_HGLOBAL; |
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STGMEDIUM stm = new STGMEDIUM(); |
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|
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// The pDataObj pointer contains the objects being acted upon. In this |
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// example, we get an HDROP handle for enumerating the selected files |
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// and folders. |
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IDataObject dataObject = (IDataObject)Marshal.GetObjectForIUnknown(pDataObj); |
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dataObject.GetData(ref fe, out stm); |
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|
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try |
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{
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// Get an HDROP handle. |
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IntPtr hDrop = stm.unionmember; |
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if (hDrop == IntPtr.Zero) |
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{
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throw new ArgumentException(); |
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} |
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// Determine how many files are involved in this operation. |
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uint nFiles = NativeMethods.DragQueryFile(hDrop, UInt32.MaxValue, null, 0); |
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Debug.WriteLine(String.Format("Got {0} files", nFiles), LogCategories.ShellMenu);
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// This code sample displays the custom context menu item when only |
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// one file is selected. |
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if (nFiles == 1) |
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{
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// Get the path of the file. |
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var fileName = new StringBuilder(260); |
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if (0 == NativeMethods.DragQueryFile(hDrop, 0, fileName, |
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fileName.Capacity)) |
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{
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Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
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} |
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Context.CurrentFile = fileName.ToString(); |
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} |
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/* else |
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{
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Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
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}*/ |
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// [-or-] |
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// Enumerate the selected files and folders. |
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//if (nFiles > 0) |
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//{
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// StringCollection selectedFiles = new StringCollection(); |
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// StringBuilder fileName = new StringBuilder(260); |
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// for (uint i = 0; i < nFiles; i++) |
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// {
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// // Get the next file name. |
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// if (0 != NativeMethods.DragQueryFile(hDrop, i, fileName, |
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// fileName.Capacity)) |
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// {
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// // Add the file name to the list. |
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// selectedFiles.Add(fileName.ToString()); |
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// } |
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// } |
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// |
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// // If we did not find any files we can work with, throw |
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// // exception. |
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// if (selectedFiles.Count == 0) |
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// {
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// Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
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// } |
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//} |
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//else |
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//{
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// Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
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//} |
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} |
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finally |
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{
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NativeMethods.ReleaseStgMedium(ref stm); |
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} |
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} |
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|
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if (pidlFolder != IntPtr.Zero) |
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{
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Debug.WriteLine("Got a folder", LogCategories.ShellMenu);
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StringBuilder path = new StringBuilder(); |
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if (!NativeMethods.SHGetPathFromIDList(pidlFolder, path)) |
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{
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int error = Marshal.GetHRForLastWin32Error(); |
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Marshal.ThrowExceptionForHR(error); |
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} |
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Context.CurrentFolder = path.ToString(); |
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Debug.WriteLine(String.Format("Folder is {0}", Context.CurrentFolder), LogCategories.ShellMenu);
|
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} |
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} |
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|
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#endregion |
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|
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|
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#region IContextMenu Members |
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|
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/// <summary> |
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/// Add commands to a shortcut menu. |
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/// </summary> |
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/// <param name="hMenu">A handle to the shortcut menu.</param> |
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/// <param name="iMenu"> |
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/// The zero-based position at which to insert the first new menu item. |
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/// </param> |
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/// <param name="idCmdFirst"> |
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/// The minimum value that the handler can specify for a menu item ID. |
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/// </param> |
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/// <param name="idCmdLast"> |
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/// The maximum value that the handler can specify for a menu item ID. |
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/// </param> |
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/// <param name="uFlags"> |
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/// Optional flags that specify how the shortcut menu can be changed. |
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/// </param> |
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/// <returns> |
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/// If successful, returns an HRESULT value that has its severity value set |
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/// to SEVERITY_SUCCESS and its code value set to the offset of the largest |
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/// command identifier that was assigned, plus one. |
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/// </returns> |
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public int QueryContextMenu( |
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IntPtr hMenu, |
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uint iMenu, |
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uint idCmdFirst, |
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uint idCmdLast, |
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uint uFlags) |
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{
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Debug.WriteLine("Start qcm", LogCategories.ShellMenu);
|
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// If uFlags include CMF_DEFAULTONLY then we should not do anything. |
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Debug.WriteLine(String.Format("Flags {0}", uFlags), LogCategories.ShellMenu);
|
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|
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if (((uint)CMF.CMF_DEFAULTONLY & uFlags) != 0) |
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{
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Debug.WriteLine("Default only flag, returning", LogCategories.ShellMenu);
|
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return WinError.MAKE_HRESULT(WinError.SEVERITY_SUCCESS, 0, 0); |
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} |
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|
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if (!Context.IsManaged) |
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{
|
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Debug.WriteLine("Not a PITHOS folder",LogCategories.ShellMenu);
|
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return WinError.MAKE_HRESULT(WinError.SEVERITY_SUCCESS, 0, 0); |
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} |
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|
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/* |
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if (!selectedFolder.ToLower().Contains("pithos"))
|
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return WinError.MAKE_HRESULT(WinError.SEVERITY_SUCCESS, 0, 0); |
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*/ |
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|
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// Use either InsertMenu or InsertMenuItem to add menu items. |
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|
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uint largestID = 0; |
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|
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DisplayFlags itemType = (Context.IsFolder) ? DisplayFlags.Folder : DisplayFlags.File; |
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|
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Debug.WriteLine(String.Format("Item Flags {0}", itemType), LogCategories.ShellMenu);
|
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|
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if (!NativeMethods.InsertMenu(hMenu, idCmdFirst, MF.MF_SEPARATOR | MF.MF_BYPOSITION, 0, String.Empty)) |
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{
|
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Log.ErrorFormat("Error adding separator 1\r\n{0}", Marshal.GetLastWin32Error());
|
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return Marshal.GetHRForLastWin32Error(); |
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} |
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|
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foreach (var menuItem in _items.Values) |
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{
|
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Debug.WriteLine(String.Format("Menu Flags {0}", menuItem.DisplayFlags), LogCategories.ShellMenu);
|
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if ((itemType & menuItem.DisplayFlags) != DisplayFlags.None) |
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{
|
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Debug.WriteLine("Adding Menu", LogCategories.ShellMenu);
|
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|
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MENUITEMINFO mii = menuItem.CreateInfo(idCmdFirst); |
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if (!NativeMethods.InsertMenuItem(hMenu, iMenu, true, ref mii)) |
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{
|
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var lastError = Marshal.GetLastWin32Error(); |
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var lastErrorHR = Marshal.GetHRForLastWin32Error(); |
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return lastErrorHR; |
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} |
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if (largestID < menuItem.MenuDisplayId) |
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largestID = menuItem.MenuDisplayId; |
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} |
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} |
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|
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Debug.Write("Adding Separator 1", LogCategories.ShellMenu);
|
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// Add a separator. |
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/* MENUITEMINFO sep = new MENUITEMINFO(); |
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sep.cbSize = (uint)Marshal.SizeOf(sep); |
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sep.fMask = MIIM.MIIM_TYPE; |
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sep.fType = MFT.MFT_SEPARATOR;*/ |
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if (!NativeMethods.InsertMenu(hMenu, (uint)_items.Values.Count + idCmdFirst+1,MF.MF_SEPARATOR|MF.MF_BYPOSITION, 0, String.Empty)) |
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{
|
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Log.ErrorFormat("Error adding separator 1\r\n{0}", Marshal.GetLastWin32Error());
|
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return Marshal.GetHRForLastWin32Error(); |
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} |
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|
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|
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|
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|
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Debug.WriteLine("Menus added", LogCategories.ShellOverlays);
|
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// Return an HRESULT value with the severity set to SEVERITY_SUCCESS. |
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// Set the code value to the offset of the largest command identifier |
| 441 |
// that was assigned, plus one (1). |
| 442 |
return WinError.MAKE_HRESULT(WinError.SEVERITY_SUCCESS, 0, |
| 443 |
largestID + 1); |
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} |
| 445 |
|
| 446 |
/// <summary> |
| 447 |
/// Carry out the command associated with a shortcut menu item. |
| 448 |
/// </summary> |
| 449 |
/// <param name="pici"> |
| 450 |
/// A pointer to a CMINVOKECOMMANDINFO or CMINVOKECOMMANDINFOEX structure |
| 451 |
/// containing information about the command. |
| 452 |
/// </param> |
| 453 |
public void InvokeCommand(IntPtr pici) |
| 454 |
{
|
| 455 |
bool isUnicode = false; |
| 456 |
|
| 457 |
// Determine which structure is being passed in, CMINVOKECOMMANDINFO or |
| 458 |
// CMINVOKECOMMANDINFOEX based on the cbSize member of lpcmi. Although |
| 459 |
// the lpcmi parameter is declared in Shlobj.h as a CMINVOKECOMMANDINFO |
| 460 |
// structure, in practice it often points to a CMINVOKECOMMANDINFOEX |
| 461 |
// structure. This struct is an extended version of CMINVOKECOMMANDINFO |
| 462 |
// and has additional members that allow Unicode strings to be passed. |
| 463 |
CMINVOKECOMMANDINFO ici = (CMINVOKECOMMANDINFO)Marshal.PtrToStructure( |
| 464 |
pici, typeof(CMINVOKECOMMANDINFO)); |
| 465 |
CMINVOKECOMMANDINFOEX iciex = new CMINVOKECOMMANDINFOEX(); |
| 466 |
if (ici.cbSize == Marshal.SizeOf(typeof(CMINVOKECOMMANDINFOEX))) |
| 467 |
{
|
| 468 |
if ((ici.fMask & CMIC.CMIC_MASK_UNICODE) != 0) |
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{
|
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isUnicode = true; |
| 471 |
iciex = (CMINVOKECOMMANDINFOEX)Marshal.PtrToStructure(pici, |
| 472 |
typeof(CMINVOKECOMMANDINFOEX)); |
| 473 |
} |
| 474 |
} |
| 475 |
|
| 476 |
// Determines whether the command is identified by its offset or verb. |
| 477 |
// There are two ways to identify commands: |
| 478 |
// |
| 479 |
// 1) The command's verb string |
| 480 |
// 2) The command's identifier offset |
| 481 |
// |
| 482 |
// If the high-order word of lpcmi->lpVerb (for the ANSI case) or |
| 483 |
// lpcmi->lpVerbW (for the Unicode case) is nonzero, lpVerb or lpVerbW |
| 484 |
// holds a verb string. If the high-order word is zero, the command |
| 485 |
// offset is in the low-order word of lpcmi->lpVerb. |
| 486 |
|
| 487 |
// For the ANSI case, if the high-order word is not zero, the command's |
| 488 |
// verb string is in lpcmi->lpVerb. |
| 489 |
if (!isUnicode && NativeMethods.HighWord(ici.verb.ToInt32()) != 0) |
| 490 |
{
|
| 491 |
// Is the verb supported by this context menu extension? |
| 492 |
string verbAnsi = Marshal.PtrToStringAnsi(ici.verb); |
| 493 |
if (_items.ContainsKey(verbAnsi)) |
| 494 |
{
|
| 495 |
_items[verbAnsi].MenuCommand(ici.hwnd); |
| 496 |
} |
| 497 |
else |
| 498 |
{
|
| 499 |
// If the verb is not recognized by the context menu handler, it |
| 500 |
// must return E_FAIL to allow it to be passed on to the other |
| 501 |
// context menu handlers that might implement that verb. |
| 502 |
Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
| 503 |
} |
| 504 |
} |
| 505 |
|
| 506 |
// For the Unicode case, if the high-order word is not zero, the |
| 507 |
// command's verb string is in lpcmi->lpVerbW. |
| 508 |
else if (isUnicode && NativeMethods.HighWord(iciex.verbW.ToInt32()) != 0) |
| 509 |
{
|
| 510 |
// Is the verb supported by this context menu extension? |
| 511 |
string verbUTF = Marshal.PtrToStringUni(iciex.verbW); |
| 512 |
if (_items.ContainsKey(verbUTF)) |
| 513 |
{
|
| 514 |
_items[verbUTF].MenuCommand(ici.hwnd); |
| 515 |
} |
| 516 |
else |
| 517 |
{
|
| 518 |
// If the verb is not recognized by the context menu handler, it |
| 519 |
// must return E_FAIL to allow it to be passed on to the other |
| 520 |
// context menu handlers that might implement that verb. |
| 521 |
Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
| 522 |
} |
| 523 |
} |
| 524 |
|
| 525 |
// If the command cannot be identified through the verb string, then |
| 526 |
// check the identifier offset. |
| 527 |
else |
| 528 |
{
|
| 529 |
// Is the command identifier offset supported by this context menu |
| 530 |
// extension? |
| 531 |
int menuID = NativeMethods.LowWord(ici.verb.ToInt32()); |
| 532 |
var menuItem = _items.FirstOrDefault(item => item.Value.MenuDisplayId == menuID).Value; |
| 533 |
if (menuItem != null) |
| 534 |
{
|
| 535 |
menuItem.MenuCommand(ici.hwnd); |
| 536 |
} |
| 537 |
else |
| 538 |
{
|
| 539 |
// If the verb is not recognized by the context menu handler, it |
| 540 |
// must return E_FAIL to allow it to be passed on to the other |
| 541 |
// context menu handlers that might implement that verb. |
| 542 |
Marshal.ThrowExceptionForHR(WinError.E_FAIL); |
| 543 |
} |
| 544 |
} |
| 545 |
} |
| 546 |
|
| 547 |
/// <summary> |
| 548 |
/// Get information about a shortcut menu command, including the help string |
| 549 |
/// and the language-independent, or canonical, name for the command. |
| 550 |
/// </summary> |
| 551 |
/// <param name="idCmd">Menu command identifier offset.</param> |
| 552 |
/// <param name="uFlags"> |
| 553 |
/// Flags specifying the information to return. This parameter can have one |
| 554 |
/// of the following values: GCS_HELPTEXTA, GCS_HELPTEXTW, GCS_VALIDATEA, |
| 555 |
/// GCS_VALIDATEW, GCS_VERBA, GCS_VERBW. |
| 556 |
/// </param> |
| 557 |
/// <param name="pReserved">Reserved. Must be IntPtr.Zero</param> |
| 558 |
/// <param name="pszName"> |
| 559 |
/// The address of the buffer to receive the null-terminated string being |
| 560 |
/// retrieved. |
| 561 |
/// </param> |
| 562 |
/// <param name="cchMax"> |
| 563 |
/// Size of the buffer, in characters, to receive the null-terminated string. |
| 564 |
/// </param> |
| 565 |
public void GetCommandString( |
| 566 |
UIntPtr idCmd, |
| 567 |
uint uFlags, |
| 568 |
IntPtr pReserved, |
| 569 |
StringBuilder pszName, |
| 570 |
uint cchMax) |
| 571 |
{
|
| 572 |
uint menuID = idCmd.ToUInt32(); |
| 573 |
var menuItem = _items.FirstOrDefault(item => item.Value.MenuDisplayId == menuID).Value; |
| 574 |
if (menuItem != null) |
| 575 |
{
|
| 576 |
switch ((GCS)uFlags) |
| 577 |
{
|
| 578 |
case GCS.GCS_VERBW: |
| 579 |
if (menuItem.VerbCanonicalName.Length > cchMax - 1) |
| 580 |
{
|
| 581 |
Marshal.ThrowExceptionForHR(WinError.STRSAFE_E_INSUFFICIENT_BUFFER); |
| 582 |
} |
| 583 |
else |
| 584 |
{
|
| 585 |
pszName.Clear(); |
| 586 |
pszName.Append(menuItem.VerbCanonicalName); |
| 587 |
} |
| 588 |
break; |
| 589 |
|
| 590 |
case GCS.GCS_HELPTEXTW: |
| 591 |
if (menuItem.VerbHelpText.Length > cchMax - 1) |
| 592 |
{
|
| 593 |
Marshal.ThrowExceptionForHR(WinError.STRSAFE_E_INSUFFICIENT_BUFFER); |
| 594 |
} |
| 595 |
else |
| 596 |
{
|
| 597 |
pszName.Clear(); |
| 598 |
pszName.Append(menuItem.VerbHelpText); |
| 599 |
} |
| 600 |
break; |
| 601 |
} |
| 602 |
} |
| 603 |
} |
| 604 |
|
| 605 |
#endregion |
| 606 |
} |
| 607 |
} |