Move FileDialogNative code to modern interop model (#3323)

src/System.Windows.Forms.Primitives/src/Interop/Shell32/Interop.COMDLG_FILTERSPEC.cs

@@ -0,0 +1,18 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+
+internal partial class Interop
+{
+    internal static partial class Shell32
+    {
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
+        public struct COMDLG_FILTERSPEC
+        {
+            public string? pszName;
+            public string? pszSpec;
+        }
+    }
+}

src/System.Windows.Forms.Primitives/src/Interop/Shell32/Interop.FDAP.cs

@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+internal partial class Interop
+{
+    internal static partial class Shell32
+    {
+        public enum FDAP : uint
+        {
+            BOTTOM = 0,
+            TOP = 1
+        }
+    }
+}

src/System.Windows.Forms.Primitives/src/Interop/Shell32/Interop.GETPROPERTYSTOREFLAGS.cs

@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+internal partial class Interop
+{
+    internal static partial class Shell32
+    {
+        [Flags]
+        public enum GETPROPERTYSTOREFLAGS : uint
+        {
+            DEFAULT = 0x00000000,
+            HANDLERPROPERTIESONLY = 0x00000001,
+            READWRITE = 0x00000002,
+            TEMPORARY = 0x00000004,
+            FASTPROPERTIESONLY = 0x00000008,
+            OPENSLOWITEM = 0x00000010,
+            DELAYCREATION = 0x00000020,
+            BESTEFFORT = 0x00000040,
+            NO_OPLOCK = 0x00000080,
+            PREFERQUERYPROPERTIES = 0x00000100,
+            EXTRINSICPROPERTIES = 0x00000200,
+            EXTRINSICPROPERTIESONLY = 0x00000400,
+            VOLATILEPROPERTIES = 0x00000800,
+            VOLATILEPROPERTIESONLY = 0x00001000,
+            MASK_VALID = 0x00001FFF
+        }
+    }
+}

src/System.Windows.Forms.Primitives/src/Interop/Shell32/Interop.IFileDialog.cs

@@ -0,0 +1,101 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+    internal static partial class Shell32
+    {
+        [ComImport]
+        [Guid("42f85136-db7e-439c-85f1-e4075d135fc8")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IFileDialog
+        {
+            [PreserveSig]
+            HRESULT Show(
+                IntPtr parent);
+
+            [PreserveSig]
+            HRESULT SetFileTypes(
+                uint cFileTypes,
+                [MarshalAs(UnmanagedType.LPArray)] COMDLG_FILTERSPEC[] rgFilterSpec);
+
+            [PreserveSig]
+            HRESULT SetFileTypeIndex(
+                uint iFileType);
+
+            void GetFileTypeIndex(
+                out uint piFileType);
+
+            void Advise(
+                IFileDialogEvents pfde,
+                out uint pdwCookie);
+
+            void Unadvise(
+                uint dwCookie);
+
+            void SetOptions(
+                FOS fos);
+
+            void GetOptions(
+                out FOS pfos);
+
+            void SetDefaultFolder(
+                IShellItem psi);
+
+            void SetFolder(
+                IShellItem psi);
+
+            void GetFolder(
+                out IShellItem ppsi);
+
+            [PreserveSig]
+            HRESULT GetCurrentSelection(
+                out IShellItem ppsi);
+
+            void SetFileName(
+                [MarshalAs(UnmanagedType.LPWStr)] string pszName);
+
+            void GetFileName(
+                [MarshalAs(UnmanagedType.LPWStr)] out string pszName);
+
+            void SetTitle(
+                [MarshalAs(UnmanagedType.LPWStr)] string pszTitle);
+
+            [PreserveSig]
+            HRESULT SetOkButtonLabel(
+                [MarshalAs(UnmanagedType.LPWStr)] string pszText);
+
+            [PreserveSig]
+            HRESULT SetFileNameLabel(
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
+
+            void GetResult(
+                out IShellItem ppsi);
+
+            [PreserveSig]
+            HRESULT AddPlace(
+                IShellItem psi,
+                FDAP fdap);
+
+            void SetDefaultExtension(
+                [MarshalAs(UnmanagedType.LPWStr)] string pszDefaultExtension);
+
+            void Close(
+                [MarshalAs(UnmanagedType.Error)] int hr);
+
+            void SetClientGuid(
+                ref Guid guid);
+
+            [PreserveSig]
+            HRESULT ClearClientData();
+
+            [PreserveSig]
+            HRESULT SetFilter(
+                IntPtr pFilter);
+        }
+    }
+}

src/System.Windows.Forms.Primitives/src/Interop/Shell32/Interop.IFileDialogCustomize.cs

@@ -0,0 +1,143 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+    internal static partial class Shell32
+    {
+        [ComImport]
+        [Guid("e6fdd21a-163f-4975-9c8c-a69f1ba37034")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IFileDialogCustomize
+        {
+            [PreserveSig]
+            HRESULT EnableOpenDropDown(
+                uint dwIDCtl);
+
+            [PreserveSig]
+            HRESULT AddMenu(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
+
+            [PreserveSig]
+            HRESULT AddPushButton(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
+
+            [PreserveSig]
+            HRESULT AddComboBox(
+                uint dwIDCtl);
+
+            [PreserveSig]
+            HRESULT AddRadioButtonList(
+                uint dwIDCtl);
+
+            [PreserveSig]
+            HRESULT AddCheckButton(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel,
+                BOOL bChecked);
+
+            [PreserveSig]
+            HRESULT AddEditBox(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszText);
+
+            [PreserveSig]
+            HRESULT AddSeparator(
+                uint dwIDCtl);
+
+            void AddText(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszText);
+
+            [PreserveSig]
+            HRESULT SetControlLabel(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
+
+            [PreserveSig]
+            HRESULT GetControlState(
+                uint dwIDCtl,
+                out CDCS pdwState);
+
+            [PreserveSig]
+            HRESULT SetControlState(
+                uint dwIDCtl,
+                CDCS dwState);
+
+            [PreserveSig]
+            HRESULT GetEditBoxText(
+                uint dwIDCtl,
+                IntPtr ppszText);
+
+            [PreserveSig]
+            HRESULT SetEditBoxText(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszText);
+
+            [PreserveSig]
+            HRESULT GetCheckButtonState(
+                uint dwIDCtl,
+                out BOOL pbChecked);
+
+            [PreserveSig]
+            HRESULT SetCheckButtonState(
+                uint dwIDCtl,
+                BOOL bChecked);
+
+            [PreserveSig]
+            HRESULT AddControlItem(
+                uint dwIDCtl,
+                uint dwIDItem,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
+
+            [PreserveSig]
+            HRESULT RemoveControlItem(
+                uint dwIDCtl,
+                uint dwIDItem);
+
+            [PreserveSig]
+            HRESULT RemoveAllControlItems(
+                uint dwIDCtl);
+
+            [PreserveSig]
+            HRESULT GetControlItemState(
+                uint dwIDCtl,
+                uint dwIDItem,
+                out CDCS pdwState);
+
+            [PreserveSig]
+            HRESULT SetControlItemState(
+                uint dwIDCtl,
+                uint dwIDItem,
+                CDCS dwState);
+
+            [PreserveSig]
+            HRESULT GetSelectedControlItem(
+                uint dwIDCtl,
+                out int pdwIDItem);
+
+            [PreserveSig]
+            HRESULT SetSelectedControlItem(
+                uint dwIDCtl,
+                uint dwIDItem);
+
+            [PreserveSig]
+            HRESULT StartVisualGroup(
+                uint dwIDCtl,
+                [MarshalAs(UnmanagedType.LPWStr)] string pszLabel);
+
+            [PreserveSig]
+            HRESULT EndVisualGroup();
+
+            [PreserveSig]
+            HRESULT MakeProminent(
+                uint dwIDCtl);
+        }
+    }
+}

src/System.Windows.Forms.Primitives/src/Interop/Shell32/Interop.IFileDialogEvents.cs

@@ -0,0 +1,56 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+    internal static partial class Shell32
+    {
+        /// <remarks>
+        ///  Some of these callbacks are cancelable - returning S_FALSE means that the dialog should
+        ///  not proceed (e.g. with closing, changing folder); to support this, we need to use the
+        ///  PreserveSig attribute to enable us to return the proper HRESULT
+        /// </remarks>
+        [ComImport]
+        [Guid("973510DB-7D7F-452B-8975-74A85828D354")]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public unsafe interface IFileDialogEvents
+        {
+            [PreserveSig]
+            HRESULT OnFileOk(
+                IFileDialog pfd);
+
+            [PreserveSig]
+            HRESULT OnFolderChanging(
+                IFileDialog pfd,
+                IShellItem psiFolder);
+
+            [PreserveSig]
+            HRESULT OnFolderChange(
+                IFileDialog pfd);
+
+            [PreserveSig]
+            HRESULT OnSelectionChange(
+                IFileDialog pfd);
+
+            [PreserveSig]
+            HRESULT OnShareViolation(
+                IFileDialog pfd,
+                IShellItem psi,
+                FDESVR* pResponse);
+
+            [PreserveSig]
+            HRESULT OnTypeChange(
+                IFileDialog pfd);
+
+            [PreserveSig]
+            HRESULT OnOverwrite(
+                IFileDialog pfd,
+                IShellItem psi,
+                FDEOR* pResponse);
+        }
+    }
+}