static void NewLineSmartIndent(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
data.EnsureCaretIsNotVirtual();
var oldCaretLine = data.Caret.Location.Line;
var indentString = data.IndentationTracker.GetIndentationString(data.Caret.Line);
data.InsertAtCaret(data.EolMarker);
if (data.HasIndentationTracker)
{
// Don't insert the indent string if the EOL insertion modified the caret location in an unexpected fashion
// (This likely means someone has custom logic regarding insertion of the EOL)
if (data.Caret.Location.Line == oldCaretLine + 1 && data.Caret.Location.Column == 1)
{
var line = data.GetLine(data.Caret.Line);
var currentIndent = line.GetIndentation(data.Document);
var currentCalculatedIndent = data.IndentationTracker.GetIndentationString(data.Caret.Line);
if (!string.IsNullOrEmpty(currentCalculatedIndent))
{
indentString = currentCalculatedIndent;
}
if (indentString != currentIndent)
{
data.InsertAtCaret(indentString);
}
}
}
}
}
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();
}
}
}
static void NewLineSmartIndent(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
data.EnsureCaretIsNotVirtual();
data.InsertAtCaret(data.EolMarker);
data.InsertAtCaret(data.GetIndentationString(data.Caret.Location));
}
}
static void NewLineSmartIndent(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
data.EnsureCaretIsNotVirtual();
data.InsertAtCaret(data.EolMarker);
var line = data.Document.GetLine(data.Caret.Line);
data.InsertAtCaret(data.GetIndentationString(line.EndOffset));
}
}
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 InsertTab (TextEditorData data)
{
if (!data.CanEditSelection)
return;
if (data.IsMultiLineSelection && data.MainSelection.SelectionMode != SelectionMode.Block) {
IndentSelection (data);
return;
}
using (var undo = data.OpenUndoGroup ()) {
string indentationString = "\t";
bool convertTabToSpaces = data.Options.TabsToSpaces;
if (!convertTabToSpaces && !data.Options.AllowTabsAfterNonTabs) {
for (int i = 1; i < data.Caret.Column; i++) {
if (data.Document.GetCharAt (data.Caret.Offset - i) != '\t') {
convertTabToSpaces = true;
break;
}
}
}
if (convertTabToSpaces) {
DocumentLocation visualLocation = data.LogicalToVisualLocation (data.Caret.Location);
int tabWidth = TextViewMargin.GetNextTabstop (data, visualLocation.Column) - visualLocation.Column;
indentationString = new string (' ', tabWidth);
}
if (!(data.IsMultiLineSelection && data.MainSelection.SelectionMode == SelectionMode.Block) && data.IsSomethingSelected)
data.DeleteSelectedText ();
data.InsertAtCaret (indentationString);
}
}
public static void DuplicateLine(TextEditorData data)
{
using (var undoGroup = data.OpenUndoGroup()) {
if (data.IsSomethingSelected)
{
var selectedText = data.SelectedText;
data.ClearSelection();
data.InsertAtCaret(selectedText);
}
else
{
DocumentLine line = data.Document.GetLine(data.Caret.Line);
if (line == null)
{
return;
}
if (line.DelimiterLength == 0)
{
data.Insert(line.Offset, data.GetTextAt(line.SegmentIncludingDelimiter) + data.EolMarker);
}
else
{
data.Insert(line.Offset, data.GetTextAt(line.SegmentIncludingDelimiter));
}
}
}
}
static void PastePlainText(TextEditorData data, string text)
{
data.DeleteSelectedText(!data.IsSomethingSelected || data.MainSelection.SelectionMode != SelectionMode.Block);
int offset = data.Caret.Offset;
data.InsertAtCaret(text);
data.PasteText(offset, text, data.Caret.Offset - offset);
}
static void NewLineSmartIndent(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
data.EnsureCaretIsNotVirtual();
string indentString;
if (data.HasIndentationTracker)
{
indentString = data.IndentationTracker.GetIndentationString(data.Caret.Location);
}
else
{
indentString = data.GetIndentationString(data.Caret.Location);
}
data.InsertAtCaret(data.EolMarker);
data.InsertAtCaret(indentString);
}
}
static void NewLineSmartIndent(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
data.EnsureCaretIsNotVirtual();
var oldCaretLine = data.Caret.Location.Line;
string indentString = data.GetIndentationString(data.Caret.Location);
data.InsertAtCaret(data.EolMarker);
// Don't insert the indent string if the EOL insertion modified the caret location in an unexpected fashion
// (This likely means someone has custom logic regarding insertion of the EOL)
if (data.Caret.Location.Line == oldCaretLine + 1 && data.Caret.Location.Column == 1)
{
data.InsertAtCaret(indentString);
}
}
}
/// <summary>
/// Transpose characters (Emacs C-t)
/// </summary>
public static void TransposeCharacters (TextEditorData data)
{
if (data.Caret.Offset == 0)
return;
DocumentLine line = data.Document.GetLine (data.Caret.Line);
if (line == null)
return;
int transposeOffset = data.Caret.Offset - 1;
char ch;
if (data.Caret.Column == 0) {
DocumentLine lineAbove = data.Document.GetLine (data.Caret.Line - 1);
if (lineAbove.Length == 0 && line.Length == 0)
return;
if (line.Length != 0) {
ch = data.Document.GetCharAt (data.Caret.Offset);
data.Remove (data.Caret.Offset, 1);
data.Insert (lineAbove.Offset + lineAbove.Length, ch.ToString ());
data.Document.CommitLineUpdate (data.Caret.Line - 1);
return;
}
int lastCharOffset = lineAbove.Offset + lineAbove.Length - 1;
ch = data.Document.GetCharAt (lastCharOffset);
data.Remove (lastCharOffset, 1);
data.InsertAtCaret (ch.ToString ());
return;
}
int offset = data.Caret.Offset;
if (data.Caret.Column >= line.Length + 1) {
offset = line.Offset + line.Length - 1;
transposeOffset = offset - 1;
// case one char in line:
if (transposeOffset < line.Offset) {
DocumentLine lineAbove = data.Document.GetLine (data.Caret.Line - 1);
transposeOffset = lineAbove.Offset + lineAbove.Length;
ch = data.Document.GetCharAt (offset);
data.Remove (offset, 1);
data.Insert (transposeOffset, ch.ToString ());
data.Caret.Offset = line.Offset;
data.Document.CommitLineUpdate (data.Caret.Line - 1);
return;
}
}
ch = data.Document.GetCharAt (offset);
data.Replace (offset, 1, data.Document.GetCharAt (transposeOffset).ToString ());
data.Replace (transposeOffset, 1, ch.ToString ());
if (data.Caret.Column < line.Length + 1)
data.Caret.Offset = offset + 1;
}
public static void DuplicateLine(TextEditorData data)
{
if (data.IsSomethingSelected)
{
data.InsertAtCaret(data.SelectedText);
}
else
{
DocumentLine line = data.Document.GetLine(data.Caret.Line);
if (line == null)
{
return;
}
data.Insert(line.Offset, data.GetTextAt(line.SegmentIncludingDelimiter));
}
}
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 ();
}
}
}
static void NewLineSmartIndent (TextEditorData data)
{
using (var undo = data.OpenUndoGroup ()) {
data.EnsureCaretIsNotVirtual ();
data.InsertAtCaret (data.EolMarker);
data.InsertAtCaret (data.GetIndentationString (data.Caret.Location));
}
}
public static void InsertTab (TextEditorData data)
{
if (!data.CanEditSelection)
return;
if (data.IsMultiLineSelection && data.MainSelection.SelectionMode != SelectionMode.Block) {
IndentSelection (data);
return;
}
using (var undo = data.OpenUndoGroup ()) {
string indentationString = "\t";
bool convertTabToSpaces = data.TabsToSpaces;
if (!convertTabToSpaces && !data.Options.AllowTabsAfterNonTabs) {
for (int i = 1; i < data.Caret.Column; i++) {
if (data.Document.GetCharAt (data.Caret.Offset - i) != '\t') {
convertTabToSpaces = true;
break;
}
}
}
if (convertTabToSpaces) {
DocumentLocation visualLocation = data.LogicalToVisualLocation (data.Caret.Location);
int tabWidth = TextViewMargin.GetNextTabstop (data, visualLocation.Column) - visualLocation.Column;
indentationString = new string (' ', tabWidth);
}
if (data.IsSomethingSelected)
data.DeleteSelectedText (data.MainSelection.SelectionMode != SelectionMode.Block);
data.InsertAtCaret (indentationString);
}
}
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 DuplicateLine (TextEditorData data)
{
using (var undoGroup = data.OpenUndoGroup ()) {
if (data.IsSomethingSelected) {
var selectedText = data.SelectedText;
data.ClearSelection ();
data.InsertAtCaret (selectedText);
} else {
DocumentLine line = data.Document.GetLine (data.Caret.Line);
if (line == null)
return;
if (line.DelimiterLength == 0) {
data.Insert (line.Offset, data.GetTextAt (line.SegmentIncludingDelimiter) + data.EolMarker);
} else {
data.Insert (line.Offset, data.GetTextAt (line.SegmentIncludingDelimiter));
}
}
}
}
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 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();
}
}
/// <summary>
/// Transpose characters (Emacs C-t)
/// </summary>
public static void TransposeCharacters (TextEditorData data)
{
if (data.Caret.Offset == 0)
return;
DocumentLine line = data.Document.GetLine (data.Caret.Line);
if (line == null)
return;
int transposeOffset = data.Caret.Offset - 1;
char ch;
if (data.Caret.Column == 0) {
DocumentLine lineAbove = data.Document.GetLine (data.Caret.Line - 1);
if (lineAbove.Length == 0 && line.Length == 0)
return;
if (line.Length != 0) {
ch = data.Document.GetCharAt (data.Caret.Offset);
data.Remove (data.Caret.Offset, 1);
data.Insert (lineAbove.Offset + lineAbove.Length, ch.ToString ());
data.Document.CommitLineUpdate (data.Caret.Line - 1);
return;
}
int lastCharOffset = lineAbove.Offset + lineAbove.Length - 1;
ch = data.Document.GetCharAt (lastCharOffset);
data.Remove (lastCharOffset, 1);
data.InsertAtCaret (ch.ToString ());
return;
}
int offset = data.Caret.Offset;
if (data.Caret.Column >= line.Length + 1) {
offset = line.Offset + line.Length - 1;
transposeOffset = offset - 1;
// case one char in line:
if (transposeOffset < line.Offset) {
DocumentLine lineAbove = data.Document.GetLine (data.Caret.Line - 1);
transposeOffset = lineAbove.Offset + lineAbove.Length;
ch = data.Document.GetCharAt (offset);
data.Remove (offset, 1);
data.Insert (transposeOffset, ch.ToString ());
data.Caret.Offset = line.Offset;
data.Document.CommitLineUpdate (data.Caret.Line - 1);
return;
}
}
ch = data.Document.GetCharAt (offset);
data.Replace (offset, 1, data.Document.GetCharAt (transposeOffset).ToString ());
data.Replace (transposeOffset, 1, ch.ToString ());
if (data.Caret.Column < line.Length + 1)
data.Caret.Offset = offset + 1;
}
static void NewLineSmartIndent (TextEditorData data)
{
using (var undo = data.OpenUndoGroup ()) {
data.EnsureCaretIsNotVirtual ();
data.InsertAtCaret (data.EolMarker);
var line = data.Document.GetLine (data.Caret.Line);
data.InsertAtCaret (data.GetIndentationString (line.EndOffset));
}
}
public static void DuplicateLine (TextEditorData data)
{
if (data.IsSomethingSelected) {
var selectedText = data.SelectedText;
data.ClearSelection ();
data.InsertAtCaret (selectedText);
}
else {
DocumentLine line = data.Document.GetLine (data.Caret.Line);
if (line == null)
return;
data.Insert (line.Offset, data.GetTextAt (line.SegmentIncludingDelimiter));
}
}
static void PastePlainText (TextEditorData data, string text)
{
data.DeleteSelectedText (!data.IsSomethingSelected || data.MainSelection.SelectionMode != SelectionMode.Block);
int offset = data.Caret.Offset;
data.InsertAtCaret (text);
data.PasteText (offset, text, data.Caret.Offset - offset);
}
static int PasteFrom (Clipboard clipboard, TextEditorData data, bool preserveSelection, int insertionOffset, bool preserveState)
{
int result = -1;
if (!data.CanEdit (data.Document.OffsetToLineNumber (insertionOffset)))
return result;
if (clipboard.WaitIsTargetAvailable (CopyOperation.MD_ATOM)) {
clipboard.RequestContents (CopyOperation.MD_ATOM, delegate(Clipboard clp, SelectionData selectionData) {
if (selectionData.Length > 0) {
byte[] selBytes = selectionData.Data;
string text = System.Text.Encoding.UTF8.GetString (selBytes, 1, selBytes.Length - 1);
bool pasteBlock = (selBytes [0] & 1) == 1;
bool pasteLine = (selBytes [0] & 2) == 2;
using (var undo = data.OpenUndoGroup ()) {
if (preserveSelection && data.IsSomethingSelected)
data.DeleteSelectedText ();
data.Caret.PreserveSelection = true;
if (pasteBlock) {
string[] lines = text.Split ('\r');
int lineNr = data.Document.OffsetToLineNumber (insertionOffset);
int col = insertionOffset - data.Document.GetLine (lineNr).Offset;
int visCol = data.Document.GetLine (lineNr).GetVisualColumn (data, col);
DocumentLine curLine;
int lineCol = col;
result = 0;
for (int i = 0; i < lines.Length; i++) {
while (data.Document.LineCount <= lineNr + i) {
data.Insert (data.Document.TextLength, Environment.NewLine);
result += Environment.NewLine.Length;
}
curLine = data.Document.GetLine (lineNr + i);
if (lines [i].Length > 0) {
lineCol = curLine.GetLogicalColumn (data, visCol);
if (curLine.Length + 1 < lineCol) {
result += lineCol - curLine.Length;
data.Insert (curLine.Offset + curLine.Length, new string (' ', lineCol - curLine.Length));
}
data.Insert (curLine.Offset + lineCol, lines [i]);
result += lines [i].Length;
}
if (!preserveState)
data.Caret.Offset = curLine.Offset + lineCol + lines [i].Length;
}
} else if (pasteLine) {
result = text.Length;
DocumentLine curLine = data.Document.GetLine (data.Caret.Line);
data.Insert (curLine.Offset, text + data.EolMarker);
} else {
int offset = data.Caret.Offset;
data.InsertAtCaret (text);
data.PasteText (offset, text, data.Caret.Offset - offset);
}
/* data.MainSelection = new Selection (data.Document.OffsetToLocation (insertionOffset),
data.Caret.Location,
lines.Length > 1 ? SelectionMode.Block : SelectionMode.Normal);*/
if (!preserveState)
data.ClearSelection ();
data.Caret.PreserveSelection = false;
}
}
});
// we got MD_ATOM text - no need to request text. (otherwise buffer may get copied twice).
return result;
}
if (result < 0 && clipboard.WaitIsTextAvailable ()) {
clipboard.RequestText (delegate(Clipboard clp, string text) {
if (string.IsNullOrEmpty (text))
return;
using (var undo = data.OpenUndoGroup ()) {
int caretPos = data.Caret.Offset;
if (data.IsSomethingSelected && data.MainSelection.SelectionMode == SelectionMode.Block) {
data.Caret.PreserveSelection = true;
data.DeleteSelectedText (false);
int textLength = 0;
int minLine = data.MainSelection.MinLine;
int maxLine = data.MainSelection.MaxLine;
var visualInsertLocation = data.LogicalToVisualLocation (data.Caret.Location);
for (int lineNumber = minLine; lineNumber <= maxLine; lineNumber++) {
DocumentLine lineSegment = data.GetLine (lineNumber);
int insertOffset = lineSegment.GetLogicalColumn (data, visualInsertLocation.Column) - 1;
if (lineSegment.Length < insertOffset) {
int visualLastColumn = lineSegment.GetVisualColumn (data, lineSegment.Length + 1);
int charsToInsert = visualInsertLocation.Column - visualLastColumn;
int spaceCount = charsToInsert % data.Options.TabSize;
string textToInsert = new string ('\t', (charsToInsert - spaceCount) / data.Options.TabSize) + new string (' ', spaceCount) + text;
insertOffset = lineSegment.Length;
int insertedChars = data.Insert (lineSegment.Offset + insertOffset, textToInsert);
data.PasteText (lineSegment.Offset + insertOffset, textToInsert, insertedChars);
} else {
textLength = data.Insert (lineSegment.Offset + insertOffset, text);
data.PasteText (lineSegment.Offset + insertOffset, text, textLength);
}
}
data.MainSelection.Anchor = new DocumentLocation (System.Math.Max (DocumentLocation.MinLine, data.Caret.Line == minLine ? maxLine : minLine), System.Math.Max (DocumentLocation.MinColumn, data.Caret.Column - textLength));
data.MainSelection.Lead = new DocumentLocation (data.Caret.Line, data.Caret.Column);
data.Caret.PreserveSelection = false;
data.Document.CommitMultipleLineUpdate (data.MainSelection.MinLine, data.MainSelection.MaxLine);
} else {
TextSegment selection = data.SelectionRange;
if (preserveSelection && data.IsSomethingSelected)
data.DeleteSelectedText ();
data.Caret.PreserveSelection = true;
//int oldLine = data.Caret.Line;
int textLength = data.Insert (insertionOffset, text);
result = textLength;
if (data.IsSomethingSelected && data.SelectionRange.Offset >= insertionOffset)
data.SelectionRange = new TextSegment (data.SelectionRange.Offset + textLength, data.SelectionRange.Length);
if (data.IsSomethingSelected && data.MainSelection.GetAnchorOffset (data) >= insertionOffset)
data.MainSelection.Anchor = data.Document.OffsetToLocation (data.MainSelection.GetAnchorOffset (data) + textLength);
data.Caret.PreserveSelection = false;
if (!preserveState) {
} else {
if (!selection.IsInvalid) {
int offset = selection.Offset;
if (offset >= insertionOffset)
offset += textLength;
data.SelectionRange = new TextSegment (offset, selection.Length);
}
}
data.PasteText (insertionOffset, text, textLength);
}
}
});
}
return result;
}
static void NewLineSmartIndent (TextEditorData data)
{
using (var undo = data.OpenUndoGroup ()) {
data.EnsureCaretIsNotVirtual ();
string indentString;
if (data.HasIndentationTracker) {
indentString = data.IndentationTracker.GetIndentationString (data.Caret.Location);
} else {
indentString = data.GetIndentationString (data.Caret.Location);
}
data.InsertAtCaret (data.EolMarker);
data.InsertAtCaret (indentString);
}
}