void ToggleCodeCommentWithBlockComments()
{
var blockStarts = TextEditorFactory.GetSyntaxProperties(textEditor.MimeType, "BlockCommentStart");
var blockEnds = TextEditorFactory.GetSyntaxProperties(textEditor.MimeType, "BlockCommentEnd");
if (blockStarts == null || blockEnds == null || blockStarts.Length == 0 || blockEnds.Length == 0)
{
return;
}
string blockStart = blockStarts[0];
string blockEnd = blockEnds[0];
using (var undo = textEditor.OpenUndoGroup()) {
IDocumentLine startLine;
IDocumentLine endLine;
if (textEditor.IsSomethingSelected)
{
startLine = textEditor.GetLineByOffset(textEditor.SelectionRange.Offset);
endLine = textEditor.GetLineByOffset(textEditor.SelectionRange.EndOffset);
// If selection ends at begining of line... This is visible as previous line
// is selected, hence we want to select previous line Bug 26287
if (endLine.Offset == textEditor.SelectionRange.EndOffset)
{
endLine = endLine.PreviousLine;
}
}
else
{
startLine = endLine = textEditor.GetLine(textEditor.CaretLine);
}
string startLineText = textEditor.GetTextAt(startLine.Offset, startLine.Length);
string endLineText = textEditor.GetTextAt(endLine.Offset, endLine.Length);
if (startLineText.StartsWith(blockStart, StringComparison.Ordinal) && endLineText.EndsWith(blockEnd, StringComparison.Ordinal))
{
textEditor.RemoveText(endLine.Offset + endLine.Length - blockEnd.Length, blockEnd.Length);
textEditor.RemoveText(startLine.Offset, blockStart.Length);
if (textEditor.IsSomethingSelected)
{
textEditor.SelectionAnchorOffset -= blockEnd.Length;
}
}
else
{
textEditor.InsertText(endLine.Offset + endLine.Length, blockEnd);
textEditor.InsertText(startLine.Offset, blockStart);
if (textEditor.IsSomethingSelected)
{
textEditor.SelectionAnchorOffset += blockEnd.Length;
}
}
}
}
public static void ExpandSelectionToLine(TextEditor textEditor)
{
// from MonoDevelop.Ide.Editor.SelectionActions.ExpandSelectionToLine
using (var undoGroup = textEditor.OpenUndoGroup()) {
var curLineSegment = textEditor.GetLine(textEditor.CaretLine).SegmentIncludingDelimiter;
var range = textEditor.SelectionRange;
var selection = TextSegment.FromBounds(
System.Math.Min(range.Offset, curLineSegment.Offset),
System.Math.Max(range.EndOffset, curLineSegment.EndOffset));
textEditor.CaretOffset = selection.EndOffset;
textEditor.SelectionRange = selection;
}
}
static IEnumerable <IDocumentLine> GetSelectedLines(TextEditor textEditor)
{
if (!textEditor.IsSomethingSelected)
{
yield return(textEditor.GetLine(textEditor.CaretLine));
yield break;
}
var selection = textEditor.SelectionRegion;
var line = textEditor.GetLine(selection.EndLine);
if (selection.EndColumn == 1)
{
line = line.PreviousLine;
}
while (line != null && line.LineNumber >= selection.BeginLine)
{
yield return(line);
line = line.PreviousLine;
}
}
public static void DuplicateCurrentLine(TextEditor textEditor)
{
// Code from Mono.TextEditor.MiscActions.DuplicateLine
using (var undoGroup = textEditor.OpenUndoGroup()) {
if (textEditor.IsSomethingSelected)
{
var selectedText = textEditor.SelectedText;
textEditor.ClearSelection();
textEditor.InsertAtCaret(selectedText);
}
else
{
var line = textEditor.GetLine(textEditor.CaretLine);
if (line == null)
{
return;
}
textEditor.InsertText(line.Offset, textEditor.GetTextAt(line.SegmentIncludingDelimiter));
}
}
}
static DocumentLocation LimitColumn(TextEditor data, DocumentLocation loc)
{
return(new DocumentLocation(loc.Line, System.Math.Min(loc.Column, data.GetLine(loc.Line).Length + 1)));
}
public static void TransposeCharacters(TextEditor textEditor)
{
// Code from Mono.TextEditor.MiscActions.TransposeCharacters
if (textEditor.CaretOffset == 0)
{
return;
}
var line = textEditor.GetLine(textEditor.CaretLine);
if (line == null)
{
return;
}
using (var undoGroup = textEditor.OpenUndoGroup()) {
int transposeOffset = textEditor.CaretOffset - 1;
char ch;
if (textEditor.CaretColumn == 0)
{
var lineAbove = textEditor.GetLine(textEditor.CaretLine - 1);
if (lineAbove.Length == 0 && line.Length == 0)
{
return;
}
if (line.Length != 0)
{
ch = textEditor.GetCharAt(textEditor.CaretOffset);
textEditor.RemoveText(textEditor.CaretOffset, 1);
textEditor.InsertText(lineAbove.Offset + lineAbove.Length, ch.ToString());
return;
}
int lastCharOffset = lineAbove.Offset + lineAbove.Length - 1;
ch = textEditor.GetCharAt(lastCharOffset);
textEditor.RemoveText(lastCharOffset, 1);
textEditor.InsertAtCaret(ch.ToString());
return;
}
int offset = textEditor.CaretOffset;
if (textEditor.CaretColumn >= line.Length + 1)
{
offset = line.Offset + line.Length - 1;
transposeOffset = offset - 1;
// case one char in line:
if (transposeOffset < line.Offset)
{
var lineAbove = textEditor.GetLine(textEditor.CaretLine - 1);
transposeOffset = lineAbove.Offset + lineAbove.Length;
ch = textEditor.GetCharAt(offset);
textEditor.RemoveText(offset, 1);
textEditor.InsertText(transposeOffset, ch.ToString());
textEditor.CaretOffset = line.Offset;
return;
}
}
ch = textEditor.GetCharAt(offset);
textEditor.ReplaceText(offset, 1, textEditor.GetCharAt(transposeOffset).ToString());
textEditor.ReplaceText(transposeOffset, 1, ch.ToString());
if (textEditor.CaretColumn < line.Length + 1)
{
textEditor.CaretOffset = offset + 1;
}
}
}