/// <summary>
/// This function sets the indentation level in a range of lines.
/// </summary>
/// <param name="textArea">The text area.</param>
/// <param name="begin">The begin.</param>
/// <param name="end">The end.</param>
public override void IndentLines(TextArea textArea, int begin, int end)
{
if (textArea.Document.TextEditorProperties.IndentStyle != IndentStyle.Smart)
{
base.IndentLines(textArea, begin, end);
return;
}
int cursorPos = textArea.Caret.Position.Y;
int oldIndentLength = 0;
if (cursorPos >= begin && cursorPos <= end)
oldIndentLength = GetIndentation(textArea, cursorPos).Length;
IndentationSettings set = new IndentationSettings();
set.IndentString = Tab.GetIndentationString(textArea.Document);
CSharpIndentationReformatter r = new CSharpIndentationReformatter();
DocumentAccessor acc = new DocumentAccessor(textArea.Document, begin, end);
r.Reformat(acc, set);
if (cursorPos >= begin && cursorPos <= end)
{
int newIndentLength = GetIndentation(textArea, cursorPos).Length;
if (oldIndentLength != newIndentLength)
{
// fix cursor position if indentation was changed
int newX = textArea.Caret.Position.X - oldIndentLength + newIndentLength;
textArea.Caret.Position = new TextLocation(Math.Max(newX, 0), cursorPos);
}
}
}
public override ICompletionData[] GenerateCompletionData(string fileName, TextArea textArea, char charTyped) {
// This class provides the data for the Code-Completion-Window.
// Some random variables and methods are returned as completion data.
List<ICompletionData> completionData = new List<ICompletionData> {
// Add some random variables
new DefaultCompletionData("a", "A local variable", 1),
new DefaultCompletionData("b", "A local variable", 1),
new DefaultCompletionData("variableX", "A local variable", 1),
new DefaultCompletionData("variableY", "A local variable", 1),
// Add some random methods
new DefaultCompletionData("MethodA", "A simple method.", 2),
new DefaultCompletionData("MethodB", "A simple method.", 2),
new DefaultCompletionData("MethodC", "A simple method.", 2)
};
// Add some snippets (text templates).
List<Snippet> snippets = new List<Snippet> {
new Snippet("for", "for (|;;)\n{\n}", "for loop"),
new Snippet("if", "if (|)\n{\n}", "if statement"),
new Snippet("ifel", "if (|)\n{\n}\nelse\n{\n}", "if-else statement"),
new Snippet("while", "while (|)\n{\n}", "while loop"),
new Snippet("dr", "Visit http://www.digitalrune.com/", "The URL of DigitalRune Software.")
};
// Add the snippets to the completion data
foreach (Snippet snippet in snippets) {
completionData.Add(new SnippetCompletionData(snippet, 0));
}
return completionData.ToArray();
}
/// <summary>
/// Define CSharp specific smart indenting for a line :)
/// </summary>
protected override int SmartIndentLine(TextArea textArea, int lineNr)
{
if (lineNr <= 0)
return AutoIndentLine(textArea, lineNr);
string oldText = textArea.Document.GetText(textArea.Document.GetLineSegment(lineNr));
DocumentAccessor acc = new DocumentAccessor(textArea.Document, lineNr, lineNr);
IndentationSettings set = new IndentationSettings();
set.IndentString = Tab.GetIndentationString(textArea.Document);
set.LeaveEmptyLines = false;
CSharpIndentationReformatter r = new CSharpIndentationReformatter();
r.Reformat(acc, set);
string t = acc.Text;
if (t.Length == 0)
{
// use AutoIndentation for new lines in comments / verbatim strings.
return AutoIndentLine(textArea, lineNr);
}
else
{
int newIndentLength = t.Length - t.TrimStart().Length;
int oldIndentLength = oldText.Length - oldText.TrimStart().Length;
if (oldIndentLength != newIndentLength && lineNr == textArea.Caret.Position.Y)
{
// fix cursor position if indentation was changed
int newX = textArea.Caret.Position.X - oldIndentLength + newIndentLength;
textArea.Caret.Position = new TextLocation(Math.Max(newX, 0), lineNr);
}
return newIndentLength;
}
}
/// <summary>
/// Attaches the specified text area.
/// </summary>
/// <param name="textArea">The text area.</param>
public void Attach(TextArea textArea)
{
_textArea = textArea;
textArea.AllowDrop = true;
textArea.DragEnter += new SafeDragEventHandler(OnDragEnter).OnDragEvent;
textArea.DragDrop += new SafeDragEventHandler(OnDragDrop).OnDragEvent;
textArea.DragOver += new SafeDragEventHandler(OnDragOver).OnDragEvent;
}
public override ICompletionData[] GenerateCompletionData(string fileName, TextArea textArea, char charTyped)
{
foreach (var item in _intellisense._icons)
{
_images.Images.Add(item);
}
return _intellisense._data.ToArray();
}
/// <summary>
/// Initializes a new instance of the <see cref="HRuler"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
public HRuler(TextArea textArea)
{
_textArea = textArea;
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
SetStyle(ControlStyles.ResizeRedraw, true);
SetStyle(ControlStyles.FixedHeight, true);
HighlightColor lineNumberPainterColor = textArea.Document.HighlightingStrategy.GetColorFor("LineNumbers");
Font lineNumberFont = lineNumberPainterColor.GetFont(textArea.TextEditorProperties.FontContainer);
Font = new Font(lineNumberFont.FontFamily, lineNumberFont.Size * 3.0f / 4.0f, FontStyle.Regular);
Size textSize = TextRenderer.MeasureText("0", Font);
Height = textSize.Height * 5 / 4;
}
/// <summary>
/// Initializes a new instance of the <see cref="TextAreaControl"/> class.
/// </summary>
/// <param name="motherTextEditorControl">The mother text editor control.</param>
public TextAreaControl(TextEditorControl motherTextEditorControl)
{
_motherTextEditorControl = motherTextEditorControl;
_textArea = new TextArea(motherTextEditorControl, this);
Controls.Add(_textArea);
_vScrollBar.ValueChanged += VScrollBarValueChanged;
_hScrollBar.ValueChanged += HScrollBarValueChanged;
SetScrollBars();
ResizeRedraw = true;
Document.TextContentChanged += DocumentTextContentChanged;
Document.DocumentChanged += AdjustScrollBarsOnDocumentChange;
Document.UpdateCommited += DocumentUpdateCommitted;
}
/// <summary>
/// Initializes a new instance of the <see cref="Caret"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
public Caret(TextArea textArea)
{
_textArea = textArea;
textArea.GotFocus += GotFocus;
textArea.LostFocus += LostFocus;
}
static bool IsInsideDocumentationComment(TextArea textArea, ISegment curLine, int cursorOffset)
{
for (int i = curLine.Offset; i < cursorOffset; ++i)
{
char ch = textArea.Document.GetCharAt(i);
if (ch == '"')
{
// parsing strings correctly is too complicated (see above),
// but I don't now any case where a doc comment is after a string...
return false;
}
if (ch == '/' && i + 2 < cursorOffset && textArea.Document.GetCharAt(i + 1) == '/' && textArea.Document.GetCharAt(i + 2) == '/')
{
return true;
}
}
return false;
}
/// <summary>
/// Initializes a new instance of the <see cref="TextAreaClipboardHandler"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
public TextAreaClipboardHandler(TextArea textArea)
{
_textArea = textArea;
textArea.SelectionManager.SelectionChanged += DocumentSelectionChanged;
}
static bool IsInsideStringOrComment(TextArea textArea, ISegment curLine, int cursorOffset)
{
// scan cur line if it is inside a string or single line comment (//)
bool insideString = false;
char stringstart = ' ';
bool verbatim = false; // true if the current string is verbatim (@-string)
char c = ' ';
for (int i = curLine.Offset; i < cursorOffset; ++i)
{
char lastchar = c;
c = textArea.Document.GetCharAt(i);
if (insideString)
{
if (c == stringstart)
{
if (verbatim && i + 1 < cursorOffset && textArea.Document.GetCharAt(i + 1) == '"')
{
++i; // skip escaped character
}
else
{
insideString = false;
}
}
else if (c == '\\' && !verbatim)
{
++i; // skip escaped character
}
}
else if (c == '/' && i + 1 < cursorOffset && textArea.Document.GetCharAt(i + 1) == '/')
{
return true;
}
else if (c == '"' || c == '\'')
{
stringstart = c;
insideString = true;
verbatim = (c == '"') && (lastchar == '@');
}
}
return insideString;
}
/// <summary>
/// Initializes a new instance of the <see cref="IconMargin"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
public IconMargin(TextArea textArea)
: base(textArea)
{
}
/// <summary>
/// Gets the word before caret.
/// </summary>
/// <returns>The word.</returns>
/// <remarks>
/// The
/// </remarks>
public static string GetWordBeforeCaret(TextArea textArea)
{
int start = FindPrevWordStart(textArea.Document, textArea.Caret.Offset);
return textArea.Document.GetText(start, textArea.Caret.Offset - start);
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
DisposeCaret();
_textArea.GotFocus -= GotFocus;
_textArea.LostFocus -= LostFocus;
_textArea = null;
}
/// <summary>
/// Deletes the word before caret.
/// </summary>
/// <returns>The new offset of the caret.</returns>
public static int DeleteWordBeforeCaret(TextArea textArea)
{
int start = FindPrevWordStart(textArea.Document, textArea.Caret.Offset);
textArea.Document.Remove(start, textArea.Caret.Offset - start);
return start;
}
/// <summary>
/// Formats a specific line after <c>ch</c> is pressed.
/// </summary>
/// <param name="textArea">The text area.</param>
/// <param name="lineNr">The line number.</param>
/// <param name="cursorOffset">The cursor offset.</param>
/// <param name="ch">The ch.</param>
/// <returns>
/// The caret delta position the caret will be moved this number
/// of bytes (e.g. the number of bytes inserted before the caret, or
/// removed, if this number is negative)
/// </returns>
public override void FormatLine(TextArea textArea, int lineNr, int cursorOffset, char ch) // used for comment tag formater/inserter
{
textArea.Document.UndoStack.StartUndoGroup();
FormatLineInternal(textArea, lineNr, cursorOffset, ch);
textArea.Document.UndoStack.EndUndoGroup();
}
/// <summary>
/// Initializes a new instance of the <see cref="AbstractMargin"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
protected AbstractMargin(TextArea textArea)
{
_textArea = textArea;
}
/// <summary>
/// Initializes a new instance of the <see cref="TextAreaMouseHandler"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
public TextAreaMouseHandler(TextArea textArea)
{
_textArea = textArea;
}
private void FormatLineInternal(TextArea textArea, int lineNr, int cursorOffset, char ch) // used for comment tag formatter/inserter
{
LineSegment curLine = textArea.Document.GetLineSegment(lineNr);
LineSegment lineAbove = lineNr > 0 ? textArea.Document.GetLineSegment(lineNr - 1) : null;
string terminator = textArea.TextEditorProperties.LineTerminator;
// local string for curLine segment
string curLineText;
if (ch == '/')
{
curLineText = textArea.Document.GetText(curLine);
string lineAboveText = lineAbove == null ? "" : textArea.Document.GetText(lineAbove);
if (curLineText != null && curLineText.EndsWith("///") && (lineAboveText == null || !lineAboveText.Trim().StartsWith("///")))
{
// TODO: Automatic insertion of XML comments disabled. Needs to be ported from SharpDevelop.
/*
string indentation = base.GetIndentation(textArea, lineNr);
object member = GetMemberAfter(textArea, lineNr);
if (member != null)
{
StringBuilder sb = new StringBuilder();
sb.Append(" <summary>");
sb.Append(terminator);
sb.Append(indentation);
sb.Append("/// ");
sb.Append(terminator);
sb.Append(indentation);
sb.Append("/// </summary>");
if (member is IMethod)
{
IMethod method = (IMethod) member;
if (method.Parameters != null && method.Parameters.Count > 0)
{
for (int i = 0; i < method.Parameters.Count; ++i)
{
sb.Append(terminator);
sb.Append(indentation);
sb.Append("/// <param name=\"");
sb.Append(method.Parameters[i].Name);
sb.Append("\"></param>");
}
}
if (method.ReturnType != null && !method.IsConstructor && method.ReturnType.FullyQualifiedName != "System.Void")
{
sb.Append(terminator);
sb.Append(indentation);
sb.Append("/// <returns></returns>");
}
}
textArea.Document.Insert(cursorOffset, sb.ToString());
textArea.Refresh();
textArea.Caret.Position = textArea.Document.OffsetToPosition(cursorOffset + indentation.Length + "/// ".Length + " <summary>".Length + terminator.Length);
}
*/
}
return;
}
if (ch != '\n' && ch != '>')
{
if (IsInsideStringOrComment(textArea, curLine, cursorOffset))
{
return;
}
}
switch (ch)
{
case '>':
if (IsInsideDocumentationComment(textArea, curLine, cursorOffset))
{
curLineText = textArea.Document.GetText(curLine);
int column = textArea.Caret.Offset - curLine.Offset;
int index = Math.Min(column - 1, curLineText.Length - 1);
while (index >= 0 && curLineText[index] != '<')
{
--index;
if (curLineText[index] == '/')
return; // the tag was an end tag or already
}
if (index > 0)
{
StringBuilder commentBuilder = new StringBuilder("");
for (int i = index; i < curLineText.Length && i < column && !Char.IsWhiteSpace(curLineText[i]); ++i)
{
commentBuilder.Append(curLineText[i]);
}
string tag = commentBuilder.ToString().Trim();
if (!tag.EndsWith(">"))
{
tag += ">";
}
if (!tag.StartsWith("/"))
{
textArea.Document.Insert(textArea.Caret.Offset, "</" + tag.Substring(1));
}
}
}
break;
case ':':
case ')':
case ']':
case '}':
case '{':
if (textArea.Document.TextEditorProperties.IndentStyle == IndentStyle.Smart)
{
textArea.Document.FormattingStrategy.IndentLine(textArea, lineNr);
}
break;
case '\n':
string lineAboveText = lineAbove == null ? "" : textArea.Document.GetText(lineAbove);
//// curLine might have some text which should be added to indentation
curLineText = "";
if (curLine.Length > 0)
{
curLineText = textArea.Document.GetText(curLine);
}
LineSegment nextLine = lineNr + 1 < textArea.Document.TotalNumberOfLines ? textArea.Document.GetLineSegment(lineNr + 1) : null;
string nextLineText = lineNr + 1 < textArea.Document.TotalNumberOfLines ? textArea.Document.GetText(nextLine) : "";
int addCursorOffset = 0;
if (lineAboveText.Trim().StartsWith("#region") && NeedEndregion(textArea.Document))
{
textArea.Document.Insert(curLine.Offset, "#endregion");
textArea.Caret.Column = IndentLine(textArea, lineNr);
return;
}
if (lineAbove != null && lineAbove.HighlightSpanStack != null && !lineAbove.HighlightSpanStack.IsEmpty)
{
if (!lineAbove.HighlightSpanStack.Peek().StopEOL)
{
// case for /* style comments
int index = lineAboveText.IndexOf("/*");
if (index > 0)
{
StringBuilder indentation = new StringBuilder(GetIndentation(textArea, lineNr - 1));
for (int i = indentation.Length; i < index; ++i)
{
indentation.Append(' ');
}
// adding curline text
textArea.Document.Replace(curLine.Offset, curLine.Length, indentation + " * " + curLineText);
textArea.Caret.Column = indentation.Length + 3 + curLineText.Length;
return;
}
index = lineAboveText.IndexOf("*");
if (index > 0)
{
StringBuilder indentation = new StringBuilder(GetIndentation(textArea, lineNr - 1));
for (int i = indentation.Length; i < index; ++i)
{
indentation.Append(' ');
}
// adding curline if present
textArea.Document.Replace(curLine.Offset, curLine.Length, indentation + "* " + curLineText);
textArea.Caret.Column = indentation.Length + 2 + curLineText.Length;
return;
}
}
else
{ // don't handle // lines, because they're only one lined comments
int indexAbove = lineAboveText.IndexOf("///");
int indexNext = nextLineText.IndexOf("///");
if (indexAbove > 0 && (indexNext != -1 || indexAbove + 4 < lineAbove.Length))
{
StringBuilder indentation = new StringBuilder(GetIndentation(textArea, lineNr - 1));
for (int i = indentation.Length; i < indexAbove; ++i)
{
indentation.Append(' ');
}
// adding curline text if present
textArea.Document.Replace(curLine.Offset, curLine.Length, indentation + "/// " + curLineText);
textArea.Caret.Column = indentation.Length + 4;
return;
}
if (IsInNonVerbatimString(lineAboveText, curLineText))
{
textArea.Document.Insert(lineAbove.Offset + lineAbove.Length,
"\" +");
curLine = textArea.Document.GetLineSegment(lineNr);
textArea.Document.Insert(curLine.Offset, "\"");
addCursorOffset = 1;
}
}
}
int result = IndentLine(textArea, lineNr) + addCursorOffset;
if (textArea.TextEditorProperties.AutoInsertCurlyBracket)
{
string oldLineText = TextHelper.GetLineAsString(textArea.Document, lineNr - 1);
if (oldLineText.EndsWith("{"))
{
if (NeedCurlyBracket(textArea.Document.TextContent))
{
textArea.Document.Insert(curLine.Offset + curLine.Length, terminator + "}");
IndentLine(textArea, lineNr + 1);
}
}
}
textArea.Caret.Column = result;
return;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="FoldMargin"/> class.
/// </summary>
/// <param name="TextArea">The text area.</param>
public FoldMargin(TextArea TextArea)
: base(TextArea)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="LineNumberMargin"/> class.
/// </summary>
/// <param name="TextArea">The text area.</param>
public LineNumberMargin(TextArea TextArea)
: base(TextArea)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="TextView"/> class.
/// </summary>
/// <param name="textArea">The text area.</param>
public TextView(TextArea textArea)
: base(textArea)
{
base.Cursor = Cursors.IBeam;
OptionsChanged();
}