| public GetVirtualIndentationColumn ( Mono.TextEditor.DocumentLocation loc ) : int | ||
| loc | Mono.TextEditor.DocumentLocation | |
| return | int | |
public static void Right(TextEditorData data)
{
if (Platform.IsMac && data.IsSomethingSelected && !data.Caret.PreserveSelection)
{
data.Caret.Offset = System.Math.Max(data.SelectionAnchor, data.Caret.Offset);
data.ClearSelection();
return;
}
DocumentLine line = data.Document.GetLine(data.Caret.Line);
IEnumerable <FoldSegment> foldings = data.Document.GetStartFoldings(line);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings)
{
if (folding.IsFolded && folding.Column == data.Caret.Column)
{
segment = folding;
break;
}
}
if (segment != null)
{
data.Caret.Offset = segment.EndOffset;
return;
}
if (data.Caret.Column >= line.Length + 1)
{
int nextColumn;
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual && data.Caret.Column == DocumentLocation.MinColumn)
{
nextColumn = data.GetVirtualIndentationColumn(data.Caret.Location);
}
else if (data.Caret.AllowCaretBehindLineEnd)
{
nextColumn = data.Caret.Column + 1;
}
else
{
nextColumn = line.Length + 1;
}
if (data.Caret.Column < nextColumn)
{
data.Caret.Column = nextColumn;
}
else
{
if (data.Caret.Line < data.LineCount)
{
data.Caret.Location = new DocumentLocation(data.Caret.Line + 1, DocumentLocation.MinColumn);
}
}
}
else
{
data.Caret.Column++;
}
}
void CheckColumn()
{
var curLine = TextEditorData.Document.GetLine(Line);
if (TextEditorData.HasIndentationTracker && TextEditorData.Options.IndentStyle == IndentStyle.Virtual && curLine.Length == 0)
{
if (column > DocumentLocation.MinColumn)
{
var indentColumn = TextEditorData.GetVirtualIndentationColumn(Location);
if (column < indentColumn)
{
column = indentColumn;
UpdateCaretOffset();
return;
}
if (column == indentColumn)
{
return;
}
}
}
if (!AllowCaretBehindLineEnd)
{
var max = curLine.Length + 1;
if (column > max)
{
column = max;
UpdateCaretOffset();
}
}
}
static void SmartBackspace(TextEditorData data, DocumentLine line)
{
var prevLine = line.PreviousLine;
var prevLineIsEmpty = prevLine != null && prevLine.Length == 0;
var startOffset = prevLine != null ? prevLine.EndOffset : 0;
var count = data.Caret.Offset - startOffset;
if (count < 0 || startOffset >= data.Length)
{
return;
}
data.Remove(startOffset, count);
if (prevLine != null)
{
if (prevLineIsEmpty)
{
if (line.Length - data.Caret.Column - 1 > 0 && data.HasIndentationTracker)
{
data.InsertAtCaret(data.IndentationTracker.GetIndentationString(data.Caret.Line));
}
else
{
data.Caret.Column = data.GetVirtualIndentationColumn(prevLine.Offset);
}
}
data.FixVirtualIndentation();
}
}
public static void Left (TextEditorData data)
{
if (Platform.IsMac && data.IsSomethingSelected && !data.Caret.PreserveSelection) {
data.Caret.Offset = System.Math.Min (data.SelectionAnchor, data.Caret.Offset);
data.ClearSelection ();
return;
}
if (data.Caret.Column > DocumentLocation.MinColumn) {
DocumentLine line = data.Document.GetLine (data.Caret.Line);
if (data.Caret.Column > line.Length + 1) {
if (data.Caret.AllowCaretBehindLineEnd) {
data.Caret.Column--;
} else {
data.Caret.Column = line.Length + 1;
}
} else {
int offset = data.Caret.Offset - 1;
foreach (var folding in data.Document.GetFoldingsFromOffset (offset).Where (f => f.IsFolded && f.Offset < offset)) {
offset = System.Math.Min (offset, folding.Offset);
}
data.Caret.Offset = offset;
}
} else if (data.Caret.Line > DocumentLocation.MinLine) {
DocumentLine prevLine = data.Document.GetLine (data.Caret.Line - 1);
var nextLocation = new DocumentLocation (data.Caret.Line - 1, prevLine.Length + 1);
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual && nextLocation.Column == DocumentLocation.MinColumn)
nextLocation = new DocumentLocation (data.Caret.Line - 1, data.GetVirtualIndentationColumn (nextLocation));
data.Caret.Location = nextLocation;
}
}
public static void InsertNewLine(TextEditorData data)
{
if (!data.CanEditSelection)
{
return;
}
using (var undo = data.OpenUndoGroup())
{
if (data.IsSomethingSelected)
{
data.DeleteSelectedText();
}
switch (data.Options.IndentStyle)
{
case IndentStyle.None:
data.InsertAtCaret(data.EolMarker);
break;
case IndentStyle.Auto:
data.EnsureCaretIsNotVirtual();
var sb = new StringBuilder(data.EolMarker);
sb.Append(data.Document.GetLineIndent(data.Caret.Line));
data.InsertAtCaret(sb.ToString());
break;
case IndentStyle.Smart:
if (!data.HasIndentationTracker)
{
goto case IndentStyle.Auto;
}
NewLineSmartIndent(data);
break;
case IndentStyle.Virtual:
if (!data.HasIndentationTracker)
{
goto case IndentStyle.Auto;
}
var oldLine = data.Caret.Line;
var curLine = data.GetLine(oldLine);
var indentCol = data.GetVirtualIndentationColumn(data.Caret.Location);
if (curLine.Length >= data.Caret.Column)
{
NewLineSmartIndent(data);
data.FixVirtualIndentation();
data.FixVirtualIndentation(oldLine);
break;
}
data.Insert(data.Caret.Offset, data.EolMarker);
data.FixVirtualIndentation(oldLine);
data.Caret.Column = indentCol;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
internal void UpdateCaretPosition(DocumentChangeEventArgs e)
{
if (e.AnchorMovementType == AnchorMovementType.BeforeInsertion && caretOffset == e.Offset)
{
return;
}
var curVersion = TextEditorData.Version;
if (offsetVersion == null)
{
offsetVersion = curVersion;
return;
}
var newOffset = offsetVersion.MoveOffsetTo(curVersion, caretOffset);
offsetVersion = curVersion;
if (newOffset == caretOffset || !AutoUpdatePosition)
{
return;
}
DocumentLocation old = Location;
var newLocation = TextEditorData.OffsetToLocation(newOffset);
int newColumn = newLocation.Column;
var curLine = TextEditorData.GetLine(newLocation.Line);
if (TextEditorData.HasIndentationTracker && TextEditorData.Options.IndentStyle == IndentStyle.Virtual && curLine.Length == 0)
{
var indentColumn = TextEditorData.GetVirtualIndentationColumn(Location);
if (column == indentColumn)
{
newColumn = indentColumn;
}
}
if (AllowCaretBehindLineEnd)
{
if (curLine != null && column > curLine.Length)
{
newColumn = column;
}
}
line = newLocation.Line;
column = newColumn;
SetDesiredColumn();
UpdateCaretOffset();
OnPositionChanged(new DocumentLocationEventArgs(old));
}
public static void Left(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
if (Platform.IsMac && data.IsSomethingSelected && !data.Caret.PreserveSelection)
{
data.Caret.Offset = System.Math.Min(data.SelectionAnchor, data.Caret.Offset);
data.ClearSelection();
return;
}
if (data.Caret.Column > DocumentLocation.MinColumn)
{
DocumentLine line = data.Document.GetLine(data.Caret.Line);
if (data.Caret.Column > line.Length + 1)
{
if (data.Caret.AllowCaretBehindLineEnd)
{
data.Caret.Column--;
}
else
{
data.Caret.Column = line.Length + 1;
}
}
else
{
int offset = data.Caret.Offset - 1;
foreach (var folding in data.Document.GetFoldingsFromOffset(offset).Where(f => f.IsFolded && f.Offset < offset))
{
offset = System.Math.Min(offset, folding.Offset);
}
data.Caret.Offset = offset;
}
}
else if (data.Caret.Line > DocumentLocation.MinLine)
{
DocumentLine prevLine = data.Document.GetLine(data.Caret.Line - 1);
var nextLocation = new DocumentLocation(data.Caret.Line - 1, prevLine.Length + 1);
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual && nextLocation.Column == DocumentLocation.MinColumn)
{
nextLocation = new DocumentLocation(data.Caret.Line - 1, data.GetVirtualIndentationColumn(nextLocation));
}
data.Caret.Location = nextLocation;
}
}
}
internal void UpdateCaretPosition(TextChangeEventArgs e)
{
//if (e.AnchorMovementType == AnchorMovementType.BeforeInsertion && caretOffset == e.Offset) {
// offsetVersion = TextEditorData.Version;
// return;
//}
var curVersion = TextEditorData.Version;
var newOffset = e.GetNewOffset(caretOffset);
if (!AutoUpdatePosition)
{
return;
}
DocumentLocation old = Location;
var newLocation = TextEditorData.OffsetToLocation(newOffset);
int newColumn = newLocation.Column;
var curLine = TextEditorData.GetLine(newLocation.Line);
if (TextEditorData.HasIndentationTracker && TextEditorData.Options.IndentStyle == IndentStyle.Virtual && curLine.Length == 0)
{
var indentColumn = TextEditorData.GetVirtualIndentationColumn(newLocation);
if (column == indentColumn)
{
newColumn = indentColumn;
}
}
if (AllowCaretBehindLineEnd)
{
if (curLine != null && column > curLine.Length)
{
newColumn = column;
}
}
line = newLocation.Line;
column = newColumn;
SetDesiredColumn();
UpdateCaretOffset();
OnPositionChanged(new CaretLocationEventArgs(old, currentBuffer ?? TextEditorData.Document.TextBuffer.CurrentSnapshot, CaretChangeReason.BufferChange));
}
public static void LineEnd(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
if (!data.Caret.PreserveSelection)
{
data.ClearSelection();
}
var line = data.Document.GetLine(data.Caret.Line);
var newLocation = new DocumentLocation(data.Caret.Line, line.Length + 1);
// handle folding
IEnumerable <FoldSegment> foldings = data.Document.GetStartFoldings(line);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings)
{
if (folding.IsFolded && folding.Contains(data.Document.LocationToOffset(newLocation)))
{
segment = folding;
break;
}
}
if (segment != null)
{
newLocation = data.Document.OffsetToLocation(segment.EndLine.Offset + segment.EndColumn - 1);
}
if (newLocation != data.Caret.Location)
{
data.Caret.Location = newLocation;
}
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual)
{
int virtualIndentColumn = data.GetVirtualIndentationColumn(data.Caret.Location);
if (virtualIndentColumn > data.Caret.Column)
{
data.Caret.Column = virtualIndentColumn;
}
}
}
}
void SetColumn()
{
var curLine = TextEditorData.Document.GetLine(Line);
if (curLine == null)
{
return;
}
column = System.Math.Max(DocumentLocation.MinColumn, Column);
column = curLine.GetLogicalColumn(TextEditorData, DesiredColumn);
if (TextEditorData.HasIndentationTracker && TextEditorData.Options.IndentStyle == IndentStyle.Virtual && curLine.GetVisualColumn(TextEditorData, column) < DesiredColumn)
{
column = TextEditorData.GetVirtualIndentationColumn(Line, column);
}
else
{
if (!AllowCaretBehindLineEnd && Column > curLine.Length + 1)
{
column = System.Math.Min(curLine.Length + 1, column);
}
}
}
public void SetToOffsetWithDesiredColumn(int desiredOffset)
{
DocumentLocation old = Location;
int desiredLineNumber = TextEditorData.Document.OffsetToLineNumber(desiredOffset);
var desiredLine = TextEditorData.Document.GetLine(desiredLineNumber);
int newColumn = desiredOffset - desiredLine.Offset + 1;
if (desiredLine.Length + 1 < Column && newColumn == 1)
{
if (TextEditorData.HasIndentationTracker && TextEditorData.Options.IndentStyle == IndentStyle.Virtual)
{
newColumn = TextEditorData.GetVirtualIndentationColumn(desiredLineNumber, 1);
}
}
line = desiredLineNumber;
column = newColumn;
var logicalDesiredColumn = desiredLine.GetLogicalColumn(TextEditorData, DesiredColumn);
if (logicalDesiredColumn <= desiredLine.Length + 1)
{
int possibleOffset = TextEditorData.LocationToOffset(desiredLineNumber, logicalDesiredColumn);
if (!TextEditorData.Document.GetFoldingsFromOffset(possibleOffset).Any(f => f.IsCollapsed))
{
column = logicalDesiredColumn;
}
}
else
{
column = System.Math.Max(newColumn, desiredLine.Length + 1);
}
UpdateCaretOffset();
OnPositionChanged(new CaretLocationEventArgs(old, currentBuffer ?? TextEditorData.Document.TextBuffer.CurrentSnapshot, CaretChangeReason.Movement));
}
public static void InsertNewLine (TextEditorData data)
{
if (!data.CanEditSelection)
return;
using (var undo = data.OpenUndoGroup ()) {
if (data.IsSomethingSelected)
data.DeleteSelectedText ();
switch (data.Options.IndentStyle) {
case IndentStyle.None:
data.InsertAtCaret (data.EolMarker);
break;
case IndentStyle.Auto:
data.EnsureCaretIsNotVirtual ();
var sb = new StringBuilder (data.EolMarker);
sb.Append (data.Document.GetLineIndent (data.Caret.Line));
data.InsertAtCaret (sb.ToString ());
break;
case IndentStyle.Smart:
if (!data.HasIndentationTracker)
goto case IndentStyle.Auto;
NewLineSmartIndent (data);
break;
case IndentStyle.Virtual:
if (!data.HasIndentationTracker)
goto case IndentStyle.Auto;
var oldLine = data.Caret.Line;
var curLine = data.GetLine (oldLine);
var indentCol = data.GetVirtualIndentationColumn (data.Caret.Location);
if (curLine.Length >= data.Caret.Column) {
NewLineSmartIndent (data);
data.FixVirtualIndentation ();
data.FixVirtualIndentation (oldLine);
break;
}
data.Insert (data.Caret.Offset, data.EolMarker);
data.FixVirtualIndentation (oldLine);
data.Caret.Column = indentCol;
break;
default:
throw new ArgumentOutOfRangeException ();
}
}
}
public static void Left(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
if (Platform.IsMac && data.IsSomethingSelected && !data.Caret.PreserveSelection)
{
data.Caret.Offset = System.Math.Min(data.SelectionAnchor, data.Caret.Offset);
data.ClearSelection();
return;
}
if (data.Caret.Column > DocumentLocation.MinColumn)
{
DocumentLine line = data.Document.GetLine(data.Caret.Line);
if (data.Caret.Column > line.Length + 1)
{
if (data.Caret.AllowCaretBehindLineEnd)
{
data.Caret.Column--;
}
else
{
data.Caret.Column = line.Length + 1;
}
}
else
{
int offset = data.Caret.Offset - 1;
bool foundFolding = false;
foreach (var folding in data.Document.GetFoldingsFromOffset(offset).Where(f => f.IsCollapsed && f.Offset < offset))
{
offset = System.Math.Min(offset, folding.Offset);
foundFolding = true;
}
if (!foundFolding)
{
var layout = data.Parent?.TextViewMargin?.GetLayout(line);
if (layout != null && data.Caret.Column < line.Length)
{
uint curIndex = 0, byteIndex = 0;
int utf8ByteIndex = (int)layout.TranslateToUTF8Index((uint)(offset - line.Offset), ref curIndex, ref byteIndex);
layout.Layout.GetCursorPos(utf8ByteIndex, out var strong_pos, out var weak_pos);
if (strong_pos.X != weak_pos.X)
{
offset--;
}
}
}
data.Caret.Offset = offset;
}
}
else if (data.Caret.Line > DocumentLocation.MinLine)
{
DocumentLine prevLine = data.Document.GetLine(data.Caret.Line - 1);
var nextLocation = new DocumentLocation(data.Caret.Line - 1, prevLine.Length + 1);
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual && nextLocation.Column == DocumentLocation.MinColumn)
{
nextLocation = new DocumentLocation(data.Caret.Line - 1, data.GetVirtualIndentationColumn(nextLocation));
}
data.Caret.Location = nextLocation;
}
var curOffset = data.Caret.Offset;
if (curOffset > 0 && curOffset < data.Length && IsLowSurrogateMarkerSet(data.GetCharAt(curOffset)))
{
data.Caret.Offset--;
}
}
}
public static void Right(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
if (Platform.IsMac && data.IsSomethingSelected && !data.Caret.PreserveSelection)
{
data.Caret.Offset = System.Math.Max(data.SelectionAnchor, data.Caret.Offset);
data.ClearSelection();
return;
}
DocumentLine line = data.Document.GetLine(data.Caret.Line);
IEnumerable <FoldSegment> foldings = data.Document.GetStartFoldings(line);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings)
{
if (folding.IsCollapsed && folding.Offset == data.Caret.Offset)
{
segment = folding;
break;
}
}
if (segment != null)
{
data.Caret.Offset = segment.EndOffset;
return;
}
if (data.Caret.Column >= line.Length + 1)
{
int nextColumn;
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual && data.Caret.Column == DocumentLocation.MinColumn)
{
nextColumn = data.GetVirtualIndentationColumn(data.Caret.Location);
}
else if (data.Caret.AllowCaretBehindLineEnd)
{
nextColumn = data.Caret.Column + 1;
}
else
{
nextColumn = line.Length + 1;
}
if (data.Caret.Column < nextColumn)
{
data.Caret.Column = nextColumn;
}
else
{
if (data.Caret.Line < data.LineCount)
{
data.Caret.Location = new DocumentLocation(data.Caret.Line + 1, DocumentLocation.MinColumn);
}
}
}
else
{
data.Caret.Column++;
var layout = data.Parent?.TextViewMargin?.GetLayout(line);
if (layout != null && data.Caret.Column < line.Length)
{
uint curIndex = 0, byteIndex = 0;
int utf8ByteIndex = (int)layout.TranslateToUTF8Index((uint)data.Caret.Column - 1, ref curIndex, ref byteIndex);
layout.Layout.GetCursorPos(utf8ByteIndex, out var strong_pos, out var weak_pos);
if (strong_pos.X != weak_pos.X)
{
data.Caret.Column++;
}
}
}
var curOffset = data.Caret.Offset;
if (curOffset > 0 && curOffset < data.Length && IsLowSurrogateMarkerSet(data.GetCharAt(curOffset)))
{
data.Caret.Offset++;
}
}
}
public static void InsertNewLine(TextEditorData data)
{
if (!data.CanEditSelection)
{
return;
}
using (var undo = data.OpenUndoGroup()) {
if (data.IsSomethingSelected)
{
var end = data.MainSelection.End;
data.DeleteSelectedText();
if (end.Column == 1)
{
CaretMoveActions.InternalCaretMoveHome(data, true, false);
return;
}
}
switch (data.Options.IndentStyle)
{
case IndentStyle.None:
data.InsertAtCaret(data.EolMarker);
break;
case IndentStyle.Auto:
data.EnsureCaretIsNotVirtual();
var indent = data.Document.GetLineIndent(data.Caret.Line);
data.InsertAtCaret(data.EolMarker);
data.EnsureCaretIsNotVirtual();
if (data.GetLine(data.Caret.Line).Length == 0)
{
data.InsertAtCaret(indent);
}
break;
case IndentStyle.Smart:
if (!data.HasIndentationTracker)
{
goto case IndentStyle.Auto;
}
NewLineSmartIndent(data);
break;
case IndentStyle.Virtual:
if (!data.HasIndentationTracker)
{
goto case IndentStyle.Auto;
}
var oldLine = data.Caret.Line;
var curLine = data.GetLine(oldLine);
var indentCol = data.GetVirtualIndentationColumn(data.Caret.Location);
if (curLine.Length >= data.Caret.Column)
{
NewLineSmartIndent(data);
data.FixVirtualIndentation();
data.FixVirtualIndentation(oldLine);
break;
}
data.Insert(data.Caret.Offset, data.EolMarker);
data.FixVirtualIndentation(oldLine);
data.Caret.Column = indentCol;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
public static void Backspace (TextEditorData data, Action<TextEditorData> removeCharBeforeCaret)
{
if (!data.CanEditSelection)
return;
using (var undo = data.OpenUndoGroup ()) {
if (data.IsSomethingSelected) {
var visualAnchorLocation = data.LogicalToVisualLocation (data.MainSelection.Anchor);
var visualLeadLocation = data.LogicalToVisualLocation (data.MainSelection.Lead);
// case: zero width block selection
if (data.MainSelection.SelectionMode == SelectionMode.Block && visualAnchorLocation.Column == visualLeadLocation.Column) {
var col = data.MainSelection.Lead.Column;
if (col <= DocumentLocation.MinColumn) {
data.ClearSelection ();
return;
}
bool preserve = data.Caret.PreserveSelection;
data.Caret.PreserveSelection = true;
for (int lineNumber = data.MainSelection.MinLine; lineNumber <= data.MainSelection.MaxLine; lineNumber++) {
var lineSegment = data.Document.GetLine (lineNumber);
int insertOffset = lineSegment.GetLogicalColumn (data, visualAnchorLocation.Column - 1) - 1;
data.Remove (lineSegment.Offset + insertOffset, 1);
}
var visualColumn = data.GetLine (data.Caret.Location.Line).GetVisualColumn (data, col - 1);
data.MainSelection = new Selection (
new DocumentLocation (data.MainSelection.Anchor.Line, data.GetLine (data.MainSelection.Anchor.Line).GetLogicalColumn (data, visualColumn)),
new DocumentLocation (data.MainSelection.Lead.Line, data.GetLine (data.MainSelection.Lead.Line).GetLogicalColumn (data, visualColumn)),
SelectionMode.Block
);
data.Caret.PreserveSelection = preserve;
data.Document.CommitMultipleLineUpdate (data.MainSelection.MinLine, data.MainSelection.MaxLine);
return;
}
data.DeleteSelectedText (data.MainSelection.SelectionMode != SelectionMode.Block);
return;
}
if (data.Caret.Line == DocumentLocation.MinLine && data.Caret.Column == DocumentLocation.MinColumn)
return;
// Virtual indentation needs to be fixed before to have the same behavior
// if it's there or not (otherwise user has to press multiple backspaces in some cases)
data.EnsureCaretIsNotVirtual ();
var line = data.Document.GetLine (data.Caret.Line);
// smart backspace (delete indentation)
if (data.HasIndentationTracker && (data.IndentationTracker.SupportedFeatures & IndentatitonTrackerFeatures.SmartBackspace) != 0 && (data.Options.IndentStyle == IndentStyle.Smart || data.Options.IndentStyle == IndentStyle.Virtual)) {
if (data.Caret.Column == data.GetVirtualIndentationColumn (data.Caret.Location)) {
bool isAllIndent = line.GetIndentation (data.Document).Length == data.Caret.Column - 1;
if (isAllIndent) {
var prevLine = line.PreviousLine;
var prevLineIsEmpty = prevLine != null && prevLine.Length == 0;
var startOffset = prevLine != null ? prevLine.EndOffset : 0;
data.Remove (startOffset, data.Caret.Offset - startOffset);
if (prevLine != null) {
if (prevLineIsEmpty) {
if (line.Length - data.Caret.Column - 1 > 0 && data.HasIndentationTracker) {
data.InsertAtCaret (data.IndentationTracker.GetIndentationString (data.Caret.Offset));
} else {
data.Caret.Column = data.GetVirtualIndentationColumn (prevLine.Offset);
}
}
data.FixVirtualIndentation ();
}
return;
}
}
}
// normal backspace.
if (data.Caret.Column > line.Length + 1) {
data.Caret.Column = line.Length + 1;
} else if (data.Caret.Offset == line.Offset) {
DocumentLine lineAbove = data.Document.GetLine (data.Caret.Line - 1);
if (lineAbove.Length == 0 && data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual) {
data.Caret.Location = new DocumentLocation (data.Caret.Line - 1, data.IndentationTracker.GetVirtualIndentationColumn (data.Caret.Line - 1, 1));
data.Replace (lineAbove.EndOffsetIncludingDelimiter - lineAbove.DelimiterLength, lineAbove.DelimiterLength, data.IndentationTracker.GetIndentationString (data.Caret.Line - 1, 1));
} else {
data.Remove (lineAbove.EndOffsetIncludingDelimiter - lineAbove.DelimiterLength, lineAbove.DelimiterLength);
}
} else {
removeCharBeforeCaret (data);
}
// Needs to be fixed after, the line may just contain the indentation
data.FixVirtualIndentation ();
}
}
public static void Backspace(TextEditorData data, Action <TextEditorData> removeCharBeforeCaret)
{
if (!data.CanEditSelection)
{
return;
}
DocumentLine line;
bool smartBackspace = false;
using (var undo = data.OpenUndoGroup()) {
if (data.IsSomethingSelected)
{
var visualAnchorLocation = data.LogicalToVisualLocation(data.MainSelection.Anchor);
var visualLeadLocation = data.LogicalToVisualLocation(data.MainSelection.Lead);
// case: zero width block selection
if (data.MainSelection.SelectionMode == SelectionMode.Block && visualAnchorLocation.Column == visualLeadLocation.Column)
{
var col = data.MainSelection.Lead.Column;
if (col <= DocumentLocation.MinColumn)
{
data.ClearSelection();
return;
}
bool preserve = data.Caret.PreserveSelection;
data.Caret.PreserveSelection = true;
var changes = new List <Microsoft.CodeAnalysis.Text.TextChange> ();
for (int lineNumber = data.MainSelection.MinLine; lineNumber <= data.MainSelection.MaxLine; lineNumber++)
{
var lineSegment = data.Document.GetLine(lineNumber);
int insertOffset = lineSegment.GetLogicalColumn(data, visualAnchorLocation.Column - 1) - 1;
changes.Add(new Microsoft.CodeAnalysis.Text.TextChange(new Microsoft.CodeAnalysis.Text.TextSpan(lineSegment.Offset + insertOffset, 1), ""));
}
data.Document.ApplyTextChanges(changes);
var visualColumn = data.GetLine(data.Caret.Location.Line).GetVisualColumn(data, col - 1);
data.MainSelection = new MonoDevelop.Ide.Editor.Selection(
new DocumentLocation(data.MainSelection.Anchor.Line, data.GetLine(data.MainSelection.Anchor.Line).GetLogicalColumn(data, visualColumn)),
new DocumentLocation(data.MainSelection.Lead.Line, data.GetLine(data.MainSelection.Lead.Line).GetLogicalColumn(data, visualColumn)),
SelectionMode.Block
);
data.Caret.PreserveSelection = preserve;
data.Document.CommitMultipleLineUpdate(data.MainSelection.MinLine, data.MainSelection.MaxLine);
return;
}
data.DeleteSelectedText(data.MainSelection.SelectionMode != SelectionMode.Block);
return;
}
if (data.Caret.Line == DocumentLocation.MinLine && data.Caret.Column == DocumentLocation.MinColumn)
{
return;
}
// Virtual indentation needs to be fixed before to have the same behavior
// if it's there or not (otherwise user has to press multiple backspaces in some cases)
data.EnsureCaretIsNotVirtual();
line = data.Document.GetLine(data.Caret.Line);
// smart backspace (delete indentation)
if (data.HasIndentationTracker && (data.IndentationTracker.SupportedFeatures & IndentationTrackerFeatures.SmartBackspace) != 0 && (data.Options.IndentStyle == IndentStyle.Smart || data.Options.IndentStyle == IndentStyle.Virtual) && data.Options.SmartBackspace)
{
if (data.Caret.Column == data.GetVirtualIndentationColumn(data.Caret.Location))
{
bool isAllIndent = line.GetIndentation(data.Document).Length == data.Caret.Column - 1;
if (isAllIndent)
{
if (!data.Options.GenerateFormattingUndoStep)
{
SmartBackspace(data, line);
return;
}
smartBackspace = true;
}
}
}
// normal backspace.
if (data.Caret.Column > line.Length + 1)
{
data.Caret.Column = line.Length + 1;
}
else if (data.Caret.Offset == line.Offset)
{
DocumentLine lineAbove = data.Document.GetLine(data.Caret.Line - 1);
if (lineAbove.Length == 0 && data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual)
{
data.Caret.Location = new DocumentLocation(data.Caret.Line - 1, data.GetVirtualIndentationColumn(data.Caret.Line - 1, 1));
data.Replace(lineAbove.EndOffsetIncludingDelimiter - lineAbove.DelimiterLength, lineAbove.DelimiterLength, data.GetIndentationString(data.Caret.Line - 1, 1));
}
else
{
data.Remove(lineAbove.EndOffsetIncludingDelimiter - lineAbove.DelimiterLength, lineAbove.DelimiterLength);
}
}
else
{
removeCharBeforeCaret(data);
}
// Needs to be fixed after, the line may just contain the indentation
data.FixVirtualIndentation();
}
if (data.Options.GenerateFormattingUndoStep && smartBackspace)
{
using (var undo = data.OpenUndoGroup()) {
data.EnsureCaretIsNotVirtual();
SmartBackspace(data, line);
}
}
}
public static void InsertNewLine (TextEditorData data)
{
if (!data.CanEditSelection)
return;
using (var undo = data.OpenUndoGroup ()) {
if (data.IsSomethingSelected) {
var end = data.MainSelection.End;
data.DeleteSelectedText ();
if (end.Column == 1) {
CaretMoveActions.InternalCaretMoveHome (data, true, false);
return;
}
}
switch (data.Options.IndentStyle) {
case IndentStyle.None:
data.InsertAtCaret (data.EolMarker);
break;
case IndentStyle.Auto:
data.EnsureCaretIsNotVirtual ();
var indent = data.Document.GetLineIndent (data.Caret.Line);
data.InsertAtCaret (data.EolMarker);
data.EnsureCaretIsNotVirtual ();
if (data.GetLine (data.Caret.Line).Length == 0)
data.InsertAtCaret (indent);
break;
case IndentStyle.Smart:
if (!data.HasIndentationTracker)
goto case IndentStyle.Auto;
NewLineSmartIndent (data);
break;
case IndentStyle.Virtual:
if (!data.HasIndentationTracker)
goto case IndentStyle.Auto;
var oldLine = data.Caret.Line;
var curLine = data.GetLine (oldLine);
var indentCol = data.GetVirtualIndentationColumn (data.Caret.Location);
if (curLine.Length >= data.Caret.Column) {
NewLineSmartIndent (data);
data.FixVirtualIndentation ();
data.FixVirtualIndentation (oldLine);
break;
}
data.Insert (data.Caret.Offset, data.EolMarker);
data.FixVirtualIndentation (oldLine);
data.Caret.Column = indentCol;
break;
default:
throw new ArgumentOutOfRangeException ();
}
}
}
static void SmartBackspace (TextEditorData data, DocumentLine line)
{
var prevLine = line.PreviousLine;
var prevLineIsEmpty = prevLine != null && prevLine.Length == 0;
var startOffset = prevLine != null ? prevLine.EndOffset : 0;
var count = data.Caret.Offset - startOffset;
if (count < 0)
return;
data.Remove (startOffset, count);
if (prevLine != null) {
if (prevLineIsEmpty) {
if (line.Length - data.Caret.Column - 1 > 0 && data.HasIndentationTracker) {
data.InsertAtCaret (data.IndentationTracker.GetIndentationString (data.Caret.Offset));
} else {
data.Caret.Column = data.GetVirtualIndentationColumn (prevLine.Offset);
}
}
data.FixVirtualIndentation ();
}
}
public static void Backspace(TextEditorData data, Action <TextEditorData> removeCharBeforeCaret)
{
if (!data.CanEditSelection)
{
return;
}
using (var undo = data.OpenUndoGroup()) {
if (data.IsSomethingSelected)
{
var visualAnchorLocation = data.LogicalToVisualLocation(data.MainSelection.Anchor);
var visualLeadLocation = data.LogicalToVisualLocation(data.MainSelection.Lead);
// case: zero width block selection
if (data.MainSelection.SelectionMode == SelectionMode.Block && visualAnchorLocation.Column == visualLeadLocation.Column)
{
var col = data.MainSelection.Lead.Column;
if (col <= DocumentLocation.MinColumn)
{
data.ClearSelection();
return;
}
bool preserve = data.Caret.PreserveSelection;
data.Caret.PreserveSelection = true;
for (int lineNumber = data.MainSelection.MinLine; lineNumber <= data.MainSelection.MaxLine; lineNumber++)
{
var lineSegment = data.Document.GetLine(lineNumber);
int insertOffset = lineSegment.GetLogicalColumn(data, visualAnchorLocation.Column - 1) - 1;
data.Remove(lineSegment.Offset + insertOffset, 1);
}
var visualColumn = data.GetLine(data.Caret.Location.Line).GetVisualColumn(data, col - 1);
data.MainSelection = new Selection(
new DocumentLocation(data.MainSelection.Anchor.Line, data.GetLine(data.MainSelection.Anchor.Line).GetLogicalColumn(data, visualColumn)),
new DocumentLocation(data.MainSelection.Lead.Line, data.GetLine(data.MainSelection.Lead.Line).GetLogicalColumn(data, visualColumn)),
SelectionMode.Block
);
data.Caret.PreserveSelection = preserve;
data.Document.CommitMultipleLineUpdate(data.MainSelection.MinLine, data.MainSelection.MaxLine);
return;
}
data.DeleteSelectedText(data.MainSelection.SelectionMode != SelectionMode.Block);
return;
}
if (data.Caret.Line == DocumentLocation.MinLine && data.Caret.Column == DocumentLocation.MinColumn)
{
return;
}
// Virtual indentation needs to be fixed before to have the same behavior
// if it's there or not (otherwise user has to press multiple backspaces in some cases)
data.EnsureCaretIsNotVirtual();
var line = data.Document.GetLine(data.Caret.Line);
// smart backspace (delete indentation)
if (data.HasIndentationTracker && (data.IndentationTracker.SupportedFeatures & IndentatitonTrackerFeatures.SmartBackspace) != 0 && (data.Options.IndentStyle == IndentStyle.Smart || data.Options.IndentStyle == IndentStyle.Virtual))
{
if (data.Caret.Column == data.GetVirtualIndentationColumn(data.Caret.Location))
{
bool isAllIndent = line.GetIndentation(data.Document).Length == data.Caret.Column - 1;
if (isAllIndent)
{
var prevLine = line.PreviousLine;
var prevLineIsEmpty = prevLine != null && prevLine.Length == 0;
var startOffset = prevLine != null ? prevLine.EndOffset : 0;
data.Remove(startOffset, data.Caret.Offset - startOffset);
if (prevLine != null)
{
if (prevLineIsEmpty)
{
if (line.Length - data.Caret.Column - 1 > 0 && data.HasIndentationTracker)
{
data.InsertAtCaret(data.IndentationTracker.GetIndentationString(data.Caret.Offset));
}
else
{
data.Caret.Column = data.GetVirtualIndentationColumn(prevLine.Offset);
}
}
data.FixVirtualIndentation();
}
return;
}
}
}
// normal backspace.
if (data.Caret.Column > line.Length + 1)
{
data.Caret.Column = line.Length + 1;
}
else if (data.Caret.Offset == line.Offset)
{
DocumentLine lineAbove = data.Document.GetLine(data.Caret.Line - 1);
if (lineAbove.Length == 0 && data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual)
{
data.Caret.Location = new DocumentLocation(data.Caret.Line - 1, data.IndentationTracker.GetVirtualIndentationColumn(data.Caret.Line - 1, 1));
data.Replace(lineAbove.EndOffsetIncludingDelimiter - lineAbove.DelimiterLength, lineAbove.DelimiterLength, data.IndentationTracker.GetIndentationString(data.Caret.Line - 1, 1));
}
else
{
data.Remove(lineAbove.EndOffsetIncludingDelimiter - lineAbove.DelimiterLength, lineAbove.DelimiterLength);
}
}
else
{
removeCharBeforeCaret(data);
}
// Needs to be fixed after, the line may just contain the indentation
data.FixVirtualIndentation();
}
}
public static void LineEnd (TextEditorData data)
{
if (!data.Caret.PreserveSelection)
data.ClearSelection ();
var line = data.Document.GetLine (data.Caret.Line);
var newLocation = new DocumentLocation (data.Caret.Line, line.Length + 1);
// handle folding
IEnumerable<FoldSegment> foldings = data.Document.GetStartFoldings (line);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings) {
if (folding.IsFolded && folding.Contains (data.Document.LocationToOffset (newLocation))) {
segment = folding;
break;
}
}
if (segment != null)
newLocation = data.Document.OffsetToLocation (segment.EndLine.Offset + segment.EndColumn - 1);
if (newLocation != data.Caret.Location)
data.Caret.Location = newLocation;
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual) {
int virtualIndentColumn = data.GetVirtualIndentationColumn (data.Caret.Location);
if (virtualIndentColumn > data.Caret.Column)
data.Caret.Column = virtualIndentColumn;
}
}
public static void Right (TextEditorData data)
{
if (Platform.IsMac && data.IsSomethingSelected && !data.Caret.PreserveSelection) {
data.Caret.Offset = System.Math.Max (data.SelectionAnchor, data.Caret.Offset);
data.ClearSelection ();
return;
}
DocumentLine line = data.Document.GetLine (data.Caret.Line);
IEnumerable<FoldSegment > foldings = data.Document.GetStartFoldings (line);
FoldSegment segment = null;
foreach (FoldSegment folding in foldings) {
if (folding.IsFolded && folding.Column == data.Caret.Column) {
segment = folding;
break;
}
}
if (segment != null) {
data.Caret.Offset = segment.EndOffset;
return;
}
if (data.Caret.Column >= line.Length + 1) {
int nextColumn;
if (data.HasIndentationTracker && data.Options.IndentStyle == IndentStyle.Virtual && data.Caret.Column == DocumentLocation.MinColumn) {
nextColumn = data.GetVirtualIndentationColumn (data.Caret.Location);
} else if (data.Caret.AllowCaretBehindLineEnd) {
nextColumn = data.Caret.Column + 1;
} else {
nextColumn = line.Length + 1;
}
if (data.Caret.Column < nextColumn) {
data.Caret.Column = nextColumn;
} else {
if (data.Caret.Line < data.LineCount)
data.Caret.Location = new DocumentLocation (data.Caret.Line + 1, DocumentLocation.MinColumn);
}
} else {
data.Caret.Column++;
}
}
