public bool FindNext(string textToFind, FindReplaceSettings settings)
{
Argument.IsNotNull(() => textToFind);
Argument.IsNotNull(() => settings);
var regex = GetRegEx(textToFind, settings);
var start = regex.Options.HasFlag(RegexOptions.RightToLeft) ?
_textEditor.SelectionStart : _textEditor.SelectionStart + _textEditor.SelectionLength;
var match = regex.Match(_textEditor.Text, start);
if (!match.Success) // start again from beginning or end
{
match = regex.Match(_textEditor.Text, regex.Options.HasFlag(RegexOptions.RightToLeft) ? _textEditor.Text.Length : 0);
}
if (!match.Success)
{
return(false);
}
_textEditor.Select(match.Index, match.Length);
var loc = _textEditor.Document.GetLocation(match.Index);
_textEditor.ScrollTo(loc.Line, loc.Column);
return(match.Success);
}
public FindReplaceViewModel(IFindReplaceSerivce csvTextEditorFindReplaceSerivce, ICsvTextEditorService csvTextEditorService)
{
Argument.IsNotNull(() => csvTextEditorFindReplaceSerivce);
Argument.IsNotNull(() => csvTextEditorService);
_csvTextEditorFindReplaceSerivce = csvTextEditorFindReplaceSerivce;
_csvTextEditorService = csvTextEditorService;
FindNext = new Command <string>(OnFindNext);
Replace = new Command <object>(OnReplace);
ReplaceAll = new Command <object>(OnReplaceAll);
FindReplaceSettings = new FindReplaceSettings();
}
public void ReplaceAll(string textToFind, string textToReplace, FindReplaceSettings settings)
{
Argument.IsNotNull(() => textToFind);
Argument.IsNotNull(() => textToReplace);
Argument.IsNotNull(() => settings);
var regex = settings.GetRegEx(textToFind, true);
var offset = 0;
_textEditor.BeginChange();
foreach (Match match in regex.Matches(_textEditor.Text))
{
_textEditor.Document.Replace(offset + match.Index, match.Length, textToReplace);
offset += textToReplace.Length - match.Length;
}
_textEditor.EndChange();
}
public bool Replace(string textToFind, string textToReplace, FindReplaceSettings settings)
{
Argument.IsNotNull(() => textToFind);
Argument.IsNotNull(() => textToReplace);
Argument.IsNotNull(() => settings);
var regex = GetRegEx(textToFind, settings);
var input = _textEditor.Text.Substring(_textEditor.SelectionStart, _textEditor.SelectionLength);
var match = regex.Match(input);
if (!match.Success || match.Index != 0 || match.Length != input.Length)
{
return(FindNext(textToFind, settings));
}
_textEditor.Document.Replace(_textEditor.SelectionStart, _textEditor.SelectionLength, textToReplace);
return(true);
}
private Regex GetRegEx(string textToFind, FindReplaceSettings settings, bool isLeftToRight = false)
{
Argument.IsNotNull(() => textToFind);
Argument.IsNotNull(() => settings);
var options = RegexOptions.None;
if (settings.IsSearchUp && !isLeftToRight)
{
options |= RegexOptions.RightToLeft;
}
if (!settings.CaseSensitive)
{
options |= RegexOptions.IgnoreCase;
}
if (settings.UseRegex)
{
return(new Regex(textToFind, options));
}
var pattern = Regex.Escape(textToFind);
if (settings.UseWildcards)
{
pattern = pattern.Replace("\\*", ".*").Replace("\\?", ".");
}
if (settings.WholeWord)
{
pattern = "\\b" + pattern + "\\b";
}
return(new Regex(pattern, options));
}
