Add project files.

Author: xan1242

FastTextBox.Designer.cs

@@ -0,0 +1,195 @@
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+
+namespace TFRandomizerGUI
+{
+    // https://stackoverflow.com/a/46125277
+    // credit: Davide Cannizzo
+    public partial class FastTextBox : TextBox
+    {
+        public FastTextBox()
+        {
+            InitializeComponent();
+        }
+
+        [DebuggerHidden, DebuggerNonUserCode, DllImport("user32.dll")]
+        private static extern IntPtr SendMessage(IntPtr hWnd, int Msg, int wParam, [MarshalAs(UnmanagedType.LPWStr)] string lParam);
+
+        [DebuggerBrowsable(DebuggerBrowsableState.Never)]
+        private string hint = string.Empty;
+
+        /// <summary>
+        /// Is called in preview the system handle the changes, and determines whether the text will be accepted and handled by the system.
+        /// </summary>
+        /// <param name="oldText">The old text.</param>
+        /// <param name="newText">The current text (included the newer changes).</param>
+        /// <param name="input">The newer changes.</param>
+        /// <param name="offset">Start position of changes.</param>
+        /// <param name="length">Length of <paramref name="input"/>.</param>
+        /// <returns>Whether the system can handle the text.</returns>
+        public delegate bool TextAcceptorEventHandler(string oldText, string newText, string input, int offset, int length);
+
+        /// <summary>
+        /// Is called in preview of or after the system handle the changes.
+        /// </summary>
+        /// <param name="oldText">The old text.</param>
+        /// <param name="newText">The current text (included the newer changes).</param>
+        /// <param name="input">The newer changes.</param>
+        /// <param name="offset">Start position of changes.</param>
+        /// <param name="length">Length of <paramref name="input"/>.</param>
+        public delegate void TextEventHandler(string oldText, string newText, string input, int offset, int length);
+
+        /// <summary>
+        /// Is called in preview of the system handle the changes.
+        /// </summary>
+        public event TextEventHandler PreviewTextChange = null;
+
+        /// <summary>
+        /// Is called after the system handled the changes.
+        /// </summary>
+        public event TextEventHandler AfterTextChange = null;
+
+        public string Hint
+        {
+            [DebuggerHidden]
+            get
+            {
+                return hint;
+            }
+            [DebuggerHidden]
+            set
+            {
+                if (value == hint)
+                    return;
+                hint = value;
+                SendMessage(Handle, 0x1501, 1, value);
+            }
+        }
+
+        public TextAcceptorEventHandler TextAcceptor
+        {
+            [DebuggerHidden]
+            get;
+            [DebuggerHidden]
+            set;
+        }
+
+        [DebuggerHidden]
+        protected override void CreateHandle()
+        {
+            base.CreateHandle();
+            SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw | ControlStyles.FixedWidth | ControlStyles.FixedHeight | ControlStyles.Opaque, DoubleBuffered = true);
+        }
+
+        /// <summary>
+        /// Is called in preview of a text change, before the system handles it, and determines whether the text will be accepted and handled by system.
+        /// </summary>
+        /// <param name="oldText">The last written text.</param>
+        /// <param name="newText">The current text (included the newer changes).</param>
+        /// <param name="input">The newer changes.</param>
+        /// <param name="offset">Start position of changes.</param>
+        /// <param name="length">Length of <paramref name="input"/>.</param>
+        /// <returns></returns>
+        [DebuggerHidden]
+        protected virtual bool OnAcceptTextInput(string oldText, string newText, string input, int offset, int length)
+        {
+            return TextAcceptor == null ? true : TextAcceptor.Invoke(oldText, newText, input, offset, length);
+        }
+
+        /// <summary>
+        /// Is called in preview of a text change, before the system handles it.
+        /// </summary>
+        /// <param name="oldText">The last written text.</param>
+        /// <param name="newText">The current text (included the newer changes).</param>
+        /// <param name="input">The newer changes.</param>
+        /// <param name="offset">Start position of changes.</param>
+        /// <param name="length">Length of <paramref name="input"/>.</param>
+        [DebuggerHidden]
+        protected virtual void OnPreviewTextChange(string oldText, string newText, string input, int offset, int length)
+        {
+            if (PreviewTextChange != null)
+                PreviewTextChange.Invoke(oldText, newText, input, offset, length);
+        }
+
+        /// <summary>
+        /// Is called after the system handled the changes.
+        /// </summary>
+        /// <param name="oldText">The old text.</param>
+        /// <param name="newText">The current text (included the newer changes).</param>
+        /// <param name="input">The newer changes.</param>
+        /// <param name="offset">Start position of changes.</param>
+        /// <param name="length">Length of <paramref name="input"/>.</param>
+        [DebuggerHidden]
+        protected virtual void OnAfterTextChange(string oldText, string newText, string input, int offset, int length)
+        {
+            if (AfterTextChange != null)
+                AfterTextChange.Invoke(oldText, newText, input, offset, length);
+        }
+
+        [DebuggerHidden]
+        private bool CallbackPreview(string oldText, string newText, string input, int offset, int length)
+        {
+            if (string.IsNullOrEmpty(newText) ? true : OnAcceptTextInput(oldText, newText, input, offset, length))
+            {
+                OnPreviewTextChange(oldText, newText, input, offset, length);
+                return true;
+            }
+            return false;
+        }
+
+        [DebuggerHidden]
+        private bool CallbackPreview(ref string newText, string oldText, string input, int offset, int length)
+        {
+            newText = GetNewText(oldText, input, offset, length);
+            return CallbackPreview(oldText, newText, input, offset, length);
+        }
+
+        [DebuggerHidden]
+        private string GetNewText(string oldText, string input, int offset, int length)
+        {
+            if (input.Length == 1 ? input.ToCharArray()[0] == (int)Keys.Back : false)
+                return Text.Length > 0 ? $"{oldText.Substring(0, offset - (length == 0 ? 1 : 0))}{oldText.Substring(offset + length)}" : string.Empty;
+            else
+                return $"{(offset > 0 ? oldText.Substring(0, offset) : string.Empty)}{input}{(offset == oldText.Length - 1 ? string.Empty : oldText.Substring(offset + length))}";
+        }
+
+        [DebuggerHidden]
+        protected override void WndProc(ref Message m)
+        {
+            string text = "";
+            switch (m.Msg)
+            {
+                case 0x102:
+                    int code = m.WParam.ToInt32();
+                    if (code == 22 && ModifierKeys.HasFlag(Keys.Control))
+                        goto case 0x302;
+                    text = ((char)code).ToString();
+                    goto case 0xC;
+                case 0x302:
+                    text = Clipboard.GetText();
+                    goto case 0xC;
+                case 0xC:
+                    string input = string.Empty, newText = string.Empty;
+                    if (string.IsNullOrEmpty(text))
+                    {
+                        newText = Marshal.PtrToStringUni(m.LParam);
+                        if (CallbackPreview(Text, newText, string.Empty, SelectionStart, SelectionLength))
+                            base.WndProc(ref m);
+                    }
+                    else
+                    {
+                        input = text;
+                        if (CallbackPreview(ref newText, Text, input, SelectionStart, SelectionLength))
+                            base.WndProc(ref m);
+                    }
+                    OnAfterTextChange(Text, newText, input, SelectionStart, SelectionLength);
+                    break;
+                default:
+                    base.WndProc(ref m);
+                    break;
+            }
+        }
+    }
+}