336 lines
12 KiB
C#
336 lines
12 KiB
C#
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using System.ComponentModel;
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using System.Reflection;
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namespace System.Windows.Forms
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{
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/// <summary>
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/// Wraps System.Windows.Forms.OpenFileDialog to make it present
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/// a vista-style dialog.
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/// </summary>
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[EditorBrowsable(EditorBrowsableState.Never)]
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[Browsable(false)]
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[DesignTimeVisible(false)]
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public partial class FolderSelectDialog : Component
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{
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// Wrapped dialog
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System.Windows.Forms.OpenFileDialog ofd = null;
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/// <summary>
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/// Default constructor
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/// </summary>
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public FolderSelectDialog()
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{
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ofd = new System.Windows.Forms.OpenFileDialog();
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ofd.Filter = "Folders|\n";
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ofd.AddExtension = false;
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ofd.CheckFileExists = false;
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ofd.DereferenceLinks = true;
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ofd.Multiselect = false;
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}
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#region Properties
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/// <summary>
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/// Gets/Sets the initial folder to be selected. A null value selects the current directory.
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/// </summary>
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public string InitialDirectory
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{
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get { return ofd.InitialDirectory; }
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set { ofd.InitialDirectory = value == null || value.Length == 0 ? Environment.CurrentDirectory : value; }
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}
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/// <summary>
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/// Gets/Sets the title to show in the dialog
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/// </summary>
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public string Title
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{
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get { return ofd.Title; }
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set { ofd.Title = value == null ? "Select a folder" : value; }
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}
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/// <summary>
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/// Gets the selected folder
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/// </summary>
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public string SelectedPath
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{
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get { return ofd.FileName; }
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}
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#endregion
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#region Methods
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/// <summary>
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/// Shows the dialog
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/// </summary>
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/// <returns>DialogResult.OK if user presses OK, else DialogResult.Cancel</returns>
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public DialogResult ShowDialog()
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{
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return ShowDialog(IntPtr.Zero);
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}
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/// <summary>
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/// Shows the dialog
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/// </summary>
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/// <param name="hWndOwner">Handle of the control to be parent</param>
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/// <returns>DialogResult.OK if user presses OK, else DialogResult.Cancel</returns>
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public DialogResult ShowDialog(IntPtr hWndOwner)
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{
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bool flag = false;
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if (Environment.OSVersion.Version.Major >= 6)
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{
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var r = new Reflector("System.Windows.Forms");
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uint num = 0;
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Type typeIFileDialog = r.GetType("FileDialogNative.IFileDialog");
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object dialog = r.Call(ofd, "CreateVistaDialog");
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r.Call(ofd, "OnBeforeVistaDialog", dialog);
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uint options = (uint)r.CallAs(typeof(System.Windows.Forms.FileDialog), ofd, "GetOptions");
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options |= (uint)r.GetEnum("FileDialogNative.FOS", "FOS_PICKFOLDERS");
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r.CallAs(typeIFileDialog, dialog, "SetOptions", options);
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object pfde = r.New("FileDialog.VistaDialogEvents", ofd);
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object[] parameters = new object[] { pfde, num };
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r.CallAs2(typeIFileDialog, dialog, "Advise", parameters);
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num = (uint)parameters[1];
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try
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{
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int num2 = (int)r.CallAs(typeIFileDialog, dialog, "Show", hWndOwner);
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flag = 0 == num2;
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}
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finally
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{
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r.CallAs(typeIFileDialog, dialog, "Unadvise", num);
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GC.KeepAlive(pfde);
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}
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}
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else
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{
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var fbd = new FolderBrowserDialog();
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fbd.Description = this.Title;
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fbd.SelectedPath = this.InitialDirectory;
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fbd.ShowNewFolderButton = false;
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if (fbd.ShowDialog(new WindowWrapper(hWndOwner)) != DialogResult.OK) return DialogResult.Cancel;
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ofd.FileName = fbd.SelectedPath;
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flag = true;
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}
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return flag ? DialogResult.OK : DialogResult.Cancel;
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}
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#endregion
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}
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/// <summary>
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/// Creates IWin32Window around an IntPtr
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/// </summary>
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public class WindowWrapper : System.Windows.Forms.IWin32Window
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{
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="handle">Handle to wrap</param>
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public WindowWrapper(IntPtr handle)
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{
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_hwnd = handle;
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}
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/// <summary>
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/// Original ptr
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/// </summary>
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public IntPtr Handle
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{
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get { return _hwnd; }
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}
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private IntPtr _hwnd;
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}
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/// <summary>
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/// This class is from the Front-End for Dosbox and is used to present a 'vista' dialog box to select folders.
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/// Being able to use a vista style dialog box to select folders is much better then using the shell folder browser.
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/// http://code.google.com/p/fed/
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///
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/// Example:
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/// var r = new Reflector("System.Windows.Forms");
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/// </summary>
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public class Reflector
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{
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#region variables
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string m_ns;
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Assembly m_asmb;
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#endregion
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#region Constructors
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="ns">The namespace containing types to be used</param>
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public Reflector(string ns)
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: this(ns, ns)
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{ }
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="an">A specific assembly name (used if the assembly name does not tie exactly with the namespace)</param>
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/// <param name="ns">The namespace containing types to be used</param>
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public Reflector(string an, string ns)
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{
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m_ns = ns;
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m_asmb = null;
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foreach (AssemblyName aN in Assembly.GetExecutingAssembly().GetReferencedAssemblies())
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{
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if (aN.FullName.StartsWith(an))
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{
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m_asmb = Assembly.Load(aN);
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break;
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}
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}
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}
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#endregion
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#region Methods
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/// <summary>
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/// Return a Type instance for a type 'typeName'
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/// </summary>
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/// <param name="typeName">The name of the type</param>
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/// <returns>A type instance</returns>
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public Type GetType(string typeName)
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{
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Type type = null;
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string[] names = typeName.Split('.');
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if (names.Length > 0)
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type = m_asmb.GetType(m_ns + "." + names[0]);
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for (int i = 1; i < names.Length; ++i)
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{
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type = type.GetNestedType(names[i], BindingFlags.NonPublic);
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}
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return type;
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}
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/// <summary>
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/// Create a new object of a named type passing along any params
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/// </summary>
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/// <param name="name">The name of the type to create</param>
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/// <param name="parameters"></param>
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/// <returns>An instantiated type</returns>
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public object New(string name, params object[] parameters)
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{
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Type type = GetType(name);
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ConstructorInfo[] ctorInfos = type.GetConstructors();
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foreach (ConstructorInfo ci in ctorInfos)
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{
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try
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{
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return ci.Invoke(parameters);
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}
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catch { }
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}
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return null;
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}
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/// <summary>
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/// Calls method 'func' on object 'obj' passing parameters 'parameters'
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/// </summary>
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/// <param name="obj">The object on which to excute function 'func'</param>
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/// <param name="func">The function to execute</param>
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/// <param name="parameters">The parameters to pass to function 'func'</param>
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/// <returns>The result of the function invocation</returns>
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public object Call(object obj, string func, params object[] parameters)
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{
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return Call2(obj, func, parameters);
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}
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/// <summary>
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/// Calls method 'func' on object 'obj' passing parameters 'parameters'
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/// </summary>
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/// <param name="obj">The object on which to excute function 'func'</param>
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/// <param name="func">The function to execute</param>
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/// <param name="parameters">The parameters to pass to function 'func'</param>
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/// <returns>The result of the function invocation</returns>
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public object Call2(object obj, string func, object[] parameters)
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{
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return CallAs2(obj.GetType(), obj, func, parameters);
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}
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/// <summary>
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/// Calls method 'func' on object 'obj' which is of type 'type' passing parameters 'parameters'
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/// </summary>
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/// <param name="type">The type of 'obj'</param>
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/// <param name="obj">The object on which to excute function 'func'</param>
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/// <param name="func">The function to execute</param>
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/// <param name="parameters">The parameters to pass to function 'func'</param>
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/// <returns>The result of the function invocation</returns>
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public object CallAs(Type type, object obj, string func, params object[] parameters)
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{
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return CallAs2(type, obj, func, parameters);
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}
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/// <summary>
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/// Calls method 'func' on object 'obj' which is of type 'type' passing parameters 'parameters'
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/// </summary>
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/// <param name="type">The type of 'obj'</param>
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/// <param name="obj">The object on which to excute function 'func'</param>
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/// <param name="func">The function to execute</param>
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/// <param name="parameters">The parameters to pass to function 'func'</param>
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/// <returns>The result of the function invocation</returns>
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public object CallAs2(Type type, object obj, string func, object[] parameters)
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{
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MethodInfo methInfo = type.GetMethod(func, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
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return methInfo.Invoke(obj, parameters);
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}
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/// <summary>
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/// Returns the value of property 'prop' of object 'obj'
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/// </summary>
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/// <param name="obj">The object containing 'prop'</param>
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/// <param name="prop">The property name</param>
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/// <returns>The property value</returns>
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public object Get(object obj, string prop)
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{
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return GetAs(obj.GetType(), obj, prop);
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}
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/// <summary>
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/// Returns the value of property 'prop' of object 'obj' which has type 'type'
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/// </summary>
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/// <param name="type">The type of 'obj'</param>
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/// <param name="obj">The object containing 'prop'</param>
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/// <param name="prop">The property name</param>
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/// <returns>The property value</returns>
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public static object GetAs(Type type, object obj, string prop)
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{
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PropertyInfo propInfo = type.GetProperty(prop, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
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return propInfo.GetValue(obj, null);
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}
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/// <summary>
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/// Returns an enum value
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/// </summary>
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/// <param name="typeName">The name of enum type</param>
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/// <param name="name">The name of the value</param>
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/// <returns>The enum value</returns>
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public object GetEnum(string typeName, string name)
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{
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Type type = GetType(typeName);
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FieldInfo fieldInfo = type.GetField(name);
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return fieldInfo.GetValue(null);
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}
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#endregion
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}
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}
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