| public ScrollTo ( int line, int column ) : void | ||
| line | int | |
| column | int | |
| return | void | |
public bool FindNext(TextEditor editor, int minPos, int maxPos)
{
if (editor == null)
{
MessageBox.Show("No Text Editor is associated with this Find and Replace Dialog");
return false;
}
if (this.cboFind.Text == null || this.cboFind.Text.Equals(String.Empty))
{
MessageBox.Show("No Find Text specified");
return false;
}
String find = this.cboFind.Text;
//Validate Regex
if (this.chkRegex.IsChecked == true)
{
try
{
Regex.IsMatch(String.Empty, find);
}
catch (Exception ex)
{
MessageBox.Show("Regular Expression is malformed - " + ex.Message);
return false;
}
}
//Add Search Text to Combo Box for later reuse
if (!this.cboFind.Items.Contains(find))
{
this.cboFind.Items.Add(find);
}
int start = editor.CaretOffset;
int pos;
int length = find.Length;
StringComparison compareMode = (this.chkMatchCase.IsChecked == true) ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase;
RegexOptions regexOps = (this.chkMatchCase.IsChecked == true) ? RegexOptions.None : RegexOptions.IgnoreCase;
if (this.chkSearchUp.IsChecked == true)
{
//Search portion of Document prior to current position
if (this.chkRegex.IsChecked == true)
{
MatchCollection ms = Regex.Matches(editor.Text.Substring(0, start), find, regexOps);
if (ms.Count == 0)
{
pos = -1;
}
else
{
pos = ms[ms.Count - 1].Index;
length = ms[ms.Count - 1].Length;
}
}
else
{
pos = editor.Text.Substring(0, start).LastIndexOf(find, compareMode);
}
}
else
{
//Search position of Document subsequent to current position (incl. any selected text)
start += editor.SelectionLength;
if (this.chkRegex.IsChecked == true)
{
Match m = Regex.Match(editor.Text.Substring(start), find, regexOps);
if (!m.Success)
{
pos = -1;
}
else
{
pos = start + m.Index;
length = m.Length;
}
}
else
{
pos = editor.Text.IndexOf(find, start, compareMode);
}
}
//If we've found the position of the next highlight it and return true otherwise return false
if (pos > -1)
{
//Check we meet any document range restrictions
if (pos < minPos || pos > maxPos)
{
editor.CaretOffset = pos;
editor.SelectionStart = pos;
editor.SelectionLength = length;
return this.FindNext(editor, minPos, maxPos);
}
//If Matching on whole word ensure that their are boundaries before and after the match
if (this.chkMatchWholeWord.IsChecked == true)
{
//Check boundary before
if (pos > 0)
{
char c = editor.Text[pos - 1];
if (Char.IsLetterOrDigit(c))
{
//Not a boundary so adjust start position and recurse
editor.CaretOffset = pos + length;
if (this.chkSearchUp.IsChecked == false) editor.CaretOffset -= editor.SelectionLength;
return this.FindNext(editor);
}
}
//Check boundary after
if (pos + length < editor.Text.Length - 1)
{
char c = editor.Text[pos + length];
if (Char.IsLetterOrDigit(c))
{
//Not a boundary so adjust start position and recurse
editor.CaretOffset = pos + length - 1;
if (this.chkSearchUp.IsChecked == false) editor.CaretOffset -= editor.SelectionLength;
return this.FindNext(editor);
}
}
}
editor.Select(pos, length);
editor.CaretOffset = pos;
editor.ScrollTo(editor.Document.GetLineByOffset(pos).LineNumber, 0);
return true;
}
else
{
return false;
}
}
public void ScrollTo(int line, int column)
{
_editor.ScrollTo(line, column);
}
