private void ExecutedHandler(object sender, ExecutedRoutedEventArgs e)
{
// При любой команде мержинг отменяется, мало ли что там команда навыполняла
PushUndoAction(null, false);
RichTextBox edit = (RichTextBox)sender;
if (e.Command == EditingCommands.DeletePreviousWord ||
e.Command == EditingCommands.DeleteNextWord)
{
if (!edit.Selection.IsEmpty)
{
RemoveSelection(edit);
}
else
{
int offsetFromEnd = edit.Document.ContentEnd.GetOffsetToPosition(edit.CaretPosition);
int offsetFromStart = edit.Document.ContentStart.GetOffsetToPosition(edit.CaretPosition);
TextPointer pointer = edit.CaretPosition;
if (e.Command == EditingCommands.DeletePreviousWord)
{
int resOffset = FindNextWhitespaceBackward(edit);
if (resOffset != -1)
{
TextRange range = new TextRange(
edit.Document.ContentStart.GetPositionAtOffset(resOffset),
edit.Document.ContentEnd.GetPositionAtOffset(offsetFromEnd));
PushUndoAction(new UndoBlockRemove(edit, range), true);
range.Text = "";
}
}
else if (e.Command == EditingCommands.DeleteNextWord)
{
int resOffset = FindNextWhitespaceForward(edit);
if (resOffset != -1)
{
TextRange range = new TextRange(
edit.Document.ContentStart.GetPositionAtOffset(resOffset),
edit.Document.ContentStart.GetPositionAtOffset(offsetFromStart));
PushUndoAction(new UndoBlockRemove(edit, range), true);
range.Text = "";
}
}
}
e.Handled = true;
LinksCheck(CaretPosition);
}
if (e.Command == ApplicationCommands.Cut)
{
if (!edit.Selection.IsEmpty)
{
edit.Copy();
RemoveSelection(this);
LinksCheck(CaretPosition);
}
e.Handled = true;
return;
}
if (e.Command == ApplicationCommands.Paste)
{
if (!Clipboard.ContainsData(DataFormats.Rtf) && !Clipboard.ContainsData(DataFormats.Text))
{
e.Handled = true;
return;
}
var undoGroup = new UndoGroup();
// Удалить старое содержимое
if (!edit.Selection.IsEmpty)
{
FormatUndo undoFormat = new FormatUndo(edit.Document, edit.Selection, edit);
undoGroup.Add(undoFormat);
edit.Selection.Text = "";
undoFormat.UpdateSelectionOffsets(edit, edit.Selection);
}
int offsetStart = edit.Document.ContentStart.GetOffsetToPosition(edit.Selection.Start);
int offsetEnd = edit.Document.ContentEnd.GetOffsetToPosition(edit.Selection.End);
var undoPaste = new UndoPaste(edit, offsetStart, offsetEnd);
bool wasError = false;
if (Clipboard.ContainsData(DataFormats.Rtf))
{
try
{
var rtfStream = MemoryStreamFromClipboard();
edit.Selection.Load(rtfStream, DataFormats.Rtf);
}
catch
{
wasError = true;
}
}
else if (Clipboard.ContainsData(DataFormats.Text))
{
edit.Selection.Text = (string)Clipboard.GetData(DataFormats.Text);
}
// Если была ошибка добавления текста, то
if (wasError == false)
{
undoGroup.Add(undoPaste);
PushUndoAction(undoGroup, true);
edit.CaretPosition = edit.Selection.End;
}
// Проверить, все ли линки на месте
LinksCheck(CaretPosition);
// Обновить хендлеры у новых ссылок (которые могли прийти с клипбоардом)
Links_Update();
e.Handled = true;
return;
}
if (e.Command == EditingCommands.AlignCenter ||
e.Command == EditingCommands.AlignJustify ||
e.Command == EditingCommands.AlignLeft ||
e.Command == EditingCommands.AlignRight ||
e.Command == EditingCommands.IncreaseIndentation ||
e.Command == EditingCommands.TabBackward ||
e.Command == EditingCommands.TabForward ||
e.Command == EditingCommands.ToggleNumbering ||
e.Command == EditingCommands.ToggleSubscript ||
e.Command == EditingCommands.ToggleSuperscript)
{
e.Handled = true;
return;
}
//e.Command == EditingCommands.ToggleUnderline
if (e.Command == EditingCommands.IncreaseFontSize ||
e.Command == EditingCommands.DecreaseFontSize ||
e.Command == EditingCommands.ToggleBold ||
e.Command == EditingCommands.ToggleItalic ||
e.Command == EditingCommands.ToggleUnderline ||
e.Command == OutlinerCommands.ToggleCrossed)
{
if (!edit.Selection.IsEmpty)
{
var bu = new FormatUndo(edit.Document, edit.Selection, edit);
PushUndoAction(bu, true);
if (e.Command == EditingCommands.ToggleBold)
IsSelectionBold = !IsSelectionBold;
else if (e.Command == EditingCommands.ToggleItalic)
IsSelectionItalic = !IsSelectionItalic;
else if (e.Command == EditingCommands.ToggleUnderline)
IsSelectionUnderlined = !IsSelectionUnderlined;
else if (e.Command == OutlinerCommands.ToggleCrossed)
IsSelectionStrikethrough = !IsSelectionStrikethrough;
/*if (e.Command == OutlinerCommands.ToggleCrossed)
IsSelectionStrikethrough = !IsSelectionStrikethrough;*/
bu.UpdateSelectionOffsets(edit, edit.Selection);
e.Handled = true;
}
else
{
TextRange paragraphRange;
if (edit.CaretPosition.Paragraph != null)
paragraphRange = new TextRange(edit.CaretPosition.Paragraph.ContentStart,
edit.CaretPosition.Paragraph.ContentEnd);
else
paragraphRange = new TextRange(edit.Document.ContentStart,
edit.Document.ContentEnd);
FontProperties fontProps = new FontProperties(paragraphRange);
var bu = new FormatUndo(edit.Document,
paragraphRange,
edit);
int caretPositionStart = edit.Document.ContentStart.GetOffsetToPosition(edit.CaretPosition);
int caretPositionEnd = edit.Document.ContentEnd.GetOffsetToPosition(edit.CaretPosition);
if (e.Command == EditingCommands.ToggleBold)
IsSelectionBold = !IsSelectionBold;
else if (e.Command == EditingCommands.ToggleItalic)
IsSelectionItalic = !IsSelectionItalic;
else if (e.Command == EditingCommands.ToggleUnderline)
IsSelectionUnderlined = !IsSelectionUnderlined;
else if (e.Command == OutlinerCommands.ToggleCrossed)
IsSelectionStrikethrough = !IsSelectionStrikethrough;
int newCaretPositionStart = edit.Document.ContentStart.GetOffsetToPosition(edit.CaretPosition);
int newCaretPositionEnd = edit.Document.ContentEnd.GetOffsetToPosition(edit.CaretPosition);
string paragraphRangeText = paragraphRange.Text;
if (caretPositionStart != newCaretPositionStart || caretPositionEnd != newCaretPositionEnd ||
!fontProps.HasSameStyle(paragraphRange))
PushUndoAction(bu, true);
e.Handled = true;
}
return;
}
if (e.Command == EditingCommands.Backspace ||
e.Command == EditingCommands.Delete)
{
if (!edit.Selection.IsEmpty)
{
RemoveSelection(edit);
LinksCheck(CaretPosition);
e.Handled = true;
}
else
{
TextPointer right = edit.Selection.Start;
TextPointer left = right.GetNextInsertionPosition(LogicalDirection.Backward);
if (e.Command == EditingCommands.Delete)
{
left = edit.Selection.Start;
right = right.GetNextInsertionPosition(LogicalDirection.Forward);
}
if (right != null && left != null)
{
TextRange range = new TextRange(right, left);
if (range.Text != "")
{
var bu = new UndoBlockRemove(edit, range);
PushUndoAction(bu, true);
range.ClearAllProperties();
range.Text = "";
bu.UpdateOffsets(edit, range);
}
}
LinksCheck(CaretPosition);
e.Handled = true;
}
}
}
public void ApplyUndoAwarePropertyValue(TextRange range, DependencyProperty property, object value)
{
if (!range.IsEmpty)
{
var bu = new FormatUndo(Document, range, this);
PushUndoAction(bu, true);
range.ApplyPropertyValue(property, value);
bu.UpdateSelectionOffsets(this, range);
}
else
{
TextRange paragraphRange;
if (CaretPosition.Paragraph != null)
paragraphRange = new TextRange(CaretPosition.Paragraph.ContentStart,
CaretPosition.Paragraph.ContentEnd);
else
paragraphRange = new TextRange(CaretPosition.DocumentStart,
CaretPosition.DocumentEnd);
FontProperties fontProps = new FontProperties(paragraphRange);
var bu = new FormatUndo(Document,
paragraphRange,
this);
int caretPositionStart = Document.ContentStart.GetOffsetToPosition(CaretPosition);
int caretPositionEnd = Document.ContentEnd.GetOffsetToPosition(CaretPosition);
range.ApplyPropertyValue(property, value);
int newCaretPositionStart = Document.ContentStart.GetOffsetToPosition(CaretPosition);
int newCaretPositionEnd = Document.ContentEnd.GetOffsetToPosition(CaretPosition);
string paragraphRangeText = paragraphRange.Text;
if (caretPositionStart != newCaretPositionStart || caretPositionEnd != newCaretPositionEnd ||
!fontProps.HasSameStyle(paragraphRange))
PushUndoAction(bu, true);
}
return;
}