protected override void Convert(Document.Document document, int startLine, int endLine)
{
List <string> lines = new List <string>();
for (int i = startLine; i <= endLine; ++i)
{
LineSegment line = document.GetLineSegment(i);
lines.Add(document.GetText(line.Offset, line.Length));
}
for (int i = 0; i < lines.Count - 1; ++i)
{
if (lines[i] == "")
{
lines.RemoveAt(i);
--i;
}
}
for (int i = 0; i < lines.Count; ++i)
{
LineSegment line = document.GetLineSegment(startLine + i);
document.Replace(line.Offset, line.Length, lines[i].ToString());
}
// remove removed lines
for (int i = startLine + lines.Count; i <= endLine; ++i)
{
LineSegment line = document.GetLineSegment(startLine + lines.Count);
document.Remove(line.Offset, line.TotalLength);
}
}
/// <remarks>
/// Undo last operation
/// </remarks>
public void Undo()
{
// we clear all selection direct, because the redraw
// is done per refresh at the end of the action
// document.SelectionCollection.Clear();
document.UndoStack.AcceptChanges = false;
document.Remove(offset, text.Length);
// document.Caret.Offset = Math.Min(document.TextLength, Math.Max(0, oldCaretPos));
document.UndoStack.AcceptChanges = true;
}
protected override void Convert(Document.Document document, int y1, int y2)
{
for (int i = y1; i < y2; ++i)
{
LineSegment line = document.GetLineSegment(i);
int removeNumber = 0;
for (int x = line.Offset; x < line.Offset + line.Length && Char.IsWhiteSpace(document.GetCharAt(x)); ++x)
{
++removeNumber;
}
if (removeNumber > 0)
{
document.Remove(line.Offset, removeNumber);
}
}
}
void RemoveCommentAt(Document.Document document, string comment, SelectionManager selmgr, int y1, int y2)
{
firstLine = y1;
lastLine = y2;
for (int i = y2; i >= y1; --i)
{
LineSegment line = document.GetLineSegment(i);
if (selmgr != null && i == y2 && line.Offset == selmgr.StartOffset + selmgr.Length)
{
--lastLine;
continue;
}
string lineText = document.GetText(line.Offset, line.Length);
if (lineText.Trim().StartsWith(comment))
{
document.Remove(line.Offset + lineText.IndexOf(comment), comment.Length);
}
}
}
void RemoveComment(Document.Document document, BlockCommentRegion commentRegion)
{
document.Remove(commentRegion.EndOffset, commentRegion.CommentEnd.Length);
document.Remove(commentRegion.StartOffset, commentRegion.CommentStart.Length);
}
void RemoveTabs(Document.Document document, SelectionManager selmgr, int y1, int y2)
{
document.UndoStack.StartUndoGroup();
for (int i = y2; i >= y1; --i)
{
LineSegment line = document.GetLineSegment(i);
if (i == y2 && line.Offset == selmgr.EndOffset)
{
continue;
}
if (line.Length > 0)
{
/**** TextPad Strategy:
* /// first convert leading whitespace to tabs (controversial! - not all editors work like this)
* string newLine = TextUtilities.LeadingWhiteSpaceToTabs(document.GetText(line.Offset,line.Length),document.Properties.Get("TabIndent", 4));
* if(newLine.Length > 0 && newLine[0] == '\t') {
* document.Replace(line.Offset,line.Length,newLine.Substring(1));
++redocounter;
* }
* else if(newLine.Length > 0 && newLine[0] == ' ') {
* /// there were just some leading spaces but less than TabIndent of them
* int leadingSpaces = 1;
* for(leadingSpaces = 1; leadingSpaces < newLine.Length && newLine[leadingSpaces] == ' '; leadingSpaces++) {
* /// deliberately empty
* }
* document.Replace(line.Offset,line.Length,newLine.Substring(leadingSpaces));
++redocounter;
* }
* /// else
* /// there were no leading tabs or spaces on this line so do nothing
* /// MS Visual Studio 6 strategy:
****/
// string temp = document.GetText(line.Offset,line.Length);
if (line.Length > 0)
{
int charactersToRemove = 0;
if (document.GetCharAt(line.Offset) == '\t') // first character is a tab - just remove it
{
charactersToRemove = 1;
}
else if (document.GetCharAt(line.Offset) == ' ')
{
int leadingSpaces = 1;
int tabIndent = Shared.TEP.IndentationSize;
for (leadingSpaces = 1; leadingSpaces < line.Length && document.GetCharAt(line.Offset + leadingSpaces) == ' '; leadingSpaces++)
{
// deliberately empty
}
if (leadingSpaces >= tabIndent)
{
// just remove tabIndent
charactersToRemove = tabIndent;
}
else if (line.Length > leadingSpaces && document.GetCharAt(line.Offset + leadingSpaces) == '\t')
{
// remove the leading spaces and the following tab as they add up
// to just one tab stop
charactersToRemove = leadingSpaces + 1;
}
else
{
// just remove the leading spaces
charactersToRemove = leadingSpaces;
}
}
if (charactersToRemove > 0)
{
document.Remove(line.Offset, charactersToRemove);
}
}
}
}
document.UndoStack.EndUndoGroup();
}
