internal static void FindRegex(TextBoxBase textBox, Regex regex)
{
Match match = regex.Match(textBox.Text, textBox.SelectionLength == 0 ? textBox.SelectionStart : textBox.SelectionStart + textBox.SelectionLength);
if (!match.Success)
{
WikiPad.FindForm.ShowFormattedMessageBox("No further occurences of RegularExpression \"{0}\" have been found.", regex.ToString());
return;
}
textBox.SelectionStart = match.Index;
textBox.SelectionLength = match.Length;
textBox.ScrollToCaret();
}
internal static void Find(TextBoxBase textBox, string findString, bool caseSensitive, bool upwards)
{
var comparison = caseSensitive
? StringComparison.CurrentCulture
: StringComparison.CurrentCultureIgnoreCase;
var text = textBox.Text;
if (text.IndexOf(findString, comparison) == -1)
{
ShowFormattedMessageBox("Cannot find \"{0}\".", findString);
return;
}
var foundIndex = Find(text, textBox.SelectionStart, textBox.SelectionLength, findString, comparison, upwards);
if (foundIndex == -1)
{
ShowFormattedMessageBox("No further occurences of \"{0}\" have been found.", findString);
return;
}
textBox.Select(foundIndex, findString.Length);
textBox.ScrollToCaret();
}
/// <summary>附加文本到文本控件末尾。主要解决非UI线程以及滚动控件等问题</summary>
/// <param name="txt">控件</param>
/// <param name="msg">消息</param>
/// <param name="maxLines">最大行数。超过该行数讲清空控件</param>
/// <returns></returns>
public static TextBoxBase Append(this TextBoxBase txt, String msg, Int32 maxLines = 1000)
{
if (txt.IsDisposed)
{
return(txt);
}
var func = new Action <String>(m =>
{
try
{
if (txt.Lines.Length >= maxLines)
{
txt.Clear();
}
// 记录原选择
var selstart = txt.SelectionStart;
var sellen = txt.SelectionLength;
// 输出日志
if (m != null)
{
//txt.AppendText(m);
// 需要考虑处理特殊符号
//ProcessBell(ref m);
//ProcessBackspace(txt, ref m);
//ProcessReturn(txt, ref m);
m = m.Trim('\0');
// 针对非Windows系统到来的数据，处理一下换行
if (txt is RichTextBox && Environment.NewLine == "\r\n")
{
// 合并多个回车
while (m.Contains("\r\r"))
{
m = m.Replace("\r\r", "\r");
}
//while (m.Contains("\n\r")) m = m.Replace("\n\r", "\r\n");
//m = m.Replace("\r\n", "<TagOfLine>");
m = m.Replace("\r\n", "\n");
//m = m.Replace("\r", "\r\n");
m = m.Replace("\n\r", "\n");
// 单独的\r换成\n
//if (_line.IsMatch(m))
// m = _line.Replace(m, "\n");
m = m.Replace("\r", "\n");
//m = m.Replace("\r", null);
//m = m.Replace("<TagOfLine>", "\r\n");
}
if (String.IsNullOrEmpty(m))
{
return;
}
txt.AppendText(m);
}
// 如果有选择，则不要滚动
if (sellen > 0)
{
// 恢复选择
if (selstart < txt.TextLength)
{
sellen = Math.Min(sellen, txt.TextLength - selstart - 1);
txt.Select(selstart, sellen);
txt.ScrollToCaret();
}
return;
}
txt.Scroll();
}
catch { }
});
//txt.Invoke(func, msg);
var ar = txt.BeginInvoke(func, msg);
//ar.AsyncWaitHandle.WaitOne(100);
//if (!ar.AsyncWaitHandle.WaitOne(10))
// txt.EndInvoke(ar);
return(txt);
}
/// <summary>
/// Repositions the caret in the defined TextBox to position _caretPosition
/// </summary>
/// <param name="textBox">Textbox to update the caret position in</param>
private void UpdateCaret(TextBoxBase textBox)
{
textBox.SelectionLength = 0;
textBox.SelectionStart = _caretPosition;
textBox.ScrollToCaret();
}
/// <summary>附加文本到文本控件末尾。主要解决非UI线程以及滚动控件等问题</summary>
/// <param name="txt">控件</param>
/// <param name="msg">消息</param>
/// <param name="maxLines">最大行数。超过该行数讲清空控件</param>
/// <returns></returns>
public static TextBoxBase Append(this TextBoxBase txt, String msg, Int32 maxLines = 1000)
{
if (txt.IsDisposed)
{
return(txt);
}
var func = new Action <String>(m =>
{
try
{
if (txt.Lines.Length >= maxLines)
{
txt.Clear();
}
// 记录原选择
var selstart = txt.SelectionStart;
var sellen = txt.SelectionLength;
// 输出日志
if (m != null)
{
//txt.AppendText(m);
// 需要考虑处理特殊符号
//ProcessBell(ref m);
//ProcessBackspace(txt, ref m);
//ProcessReturn(txt, ref m);
m = m.Trim('\0');
if (String.IsNullOrEmpty(m))
{
return;
}
txt.AppendText(m);
}
// 如果有选择，则不要滚动
if (sellen > 0)
{
// 恢复选择
if (selstart < txt.TextLength)
{
sellen = Math.Min(sellen, txt.TextLength - selstart - 1);
txt.Select(selstart, sellen);
txt.ScrollToCaret();
}
return;
}
txt.Scroll();
}
catch { }
});
//txt.Invoke(func, msg);
var ar = txt.BeginInvoke(func, msg);
//ar.AsyncWaitHandle.WaitOne(100);
//if (!ar.AsyncWaitHandle.WaitOne(10))
// txt.EndInvoke(ar);
return(txt);
}
}//method
private bool DoSearch(TextBoxBase textBox, string fragment, int start) {
textBox.SelectionLength = 0;
// Compile the regular expression.
Regex r = new Regex(fragment, RegexOptions.IgnoreCase);
// Match the regular expression pattern against a text string.
Match m = r.Match(textBox.Text.Substring(start));
if (m.Success) {
int i = 0;
Group g = m.Groups[i];
CaptureCollection cc = g.Captures;
Capture c = cc[0];
textBox.SelectionStart = c.Index + start;
textBox.SelectionLength = c.Length;
textBox.Focus();
textBox.ScrollToCaret();
return true;
}
return false;
}//method
private static void SetCaretAt(TextBoxBase textBox, int position)
{
textBox.Focus();
textBox.SelectionStart = position;
textBox.SelectionLength = 0;
textBox.ScrollToCaret();
}
public static void ScrollToTop(TextBoxBase tb)
{
tb.SelectionStart = 0;
tb.ScrollToCaret();
}
