using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Threading;
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namespace LB_VisionControls
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{
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/// <summary>
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/// Debug emulator.
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/// </summary>
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public class DebugTextBox : FastColoredTextBox
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{
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private volatile bool isReadLineMode;
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private volatile bool isUpdating;
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private Place StartReadPlace { get; set; }
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/// <summary>
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/// Control is waiting for line entering.
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/// </summary>
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public bool IsReadLineMode
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{
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get { return isReadLineMode; }
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set { isReadLineMode = value; }
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}
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/// <summary>
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/// Append line to end of text.
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/// </summary>
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/// <param name="text"></param>
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public void WriteLine(string text)
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{
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IsReadLineMode = false;
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isUpdating = true;
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try
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{
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AppendText(text);
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GoEnd();
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}
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finally
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{
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isUpdating = false;
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ClearUndo();
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}
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}
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/// <summary>
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/// Wait for line entering.
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/// Set IsReadLineMode to false for break of waiting.
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/// </summary>
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/// <returns></returns>
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public string ReadLine()
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{
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GoEnd();
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StartReadPlace = Range.End;
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IsReadLineMode = true;
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try
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{
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while (IsReadLineMode)
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{
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Application.DoEvents();
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Thread.Sleep(5);
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}
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}
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finally
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{
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IsReadLineMode = false;
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ClearUndo();
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}
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return new Range(this, StartReadPlace, Range.End).Text.TrimEnd('\r', '\n');
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}
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public override void OnTextChanging(ref string text)
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{
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if (!IsReadLineMode && !isUpdating)
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{
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text = ""; //cancel changing
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return;
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}
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if (IsReadLineMode)
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{
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if (Selection.Start < StartReadPlace || Selection.End < StartReadPlace)
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GoEnd();//move caret to entering position
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if (Selection.Start == StartReadPlace || Selection.End == StartReadPlace)
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if (text == "\b") //backspace
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{
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text = ""; //cancel deleting of last char of readonly text
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return;
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}
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if (text != null && text.Contains('\n'))
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{
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text = text.Substring(0, text.IndexOf('\n') + 1);
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IsReadLineMode = false;
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}
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}
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base.OnTextChanging(ref text);
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}
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private void InitializeComponent()
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{
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this.SuspendLayout();
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//
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// DebugTextBox
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//
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this.AutoScrollMinSize = new System.Drawing.Size(27, 14);
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this.BackColor = System.Drawing.SystemColors.Control;
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this.Name = "DebugTextBox";
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this.ResumeLayout(false);
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}
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}
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}
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