static void ConvertTabsToSpaces(IUserInterface ui,
int begin, int end, ref int delta)
{
int tabCount = 0;
Document doc = ui.Document;
StringBuilder text = new StringBuilder(1024);
for (int i = begin; i < end; i++)
{
if (doc[i] == '\t')
{
tabCount++;
string spaces = UiImpl.GetTabEquivalentSpaces(ui, i);
text.Append(spaces);
}
else
{
text.Append(doc[i]);
}
}
// Replace with current content
if (0 < tabCount)
{
doc.Replace(text.ToString(), begin, end);
}
delta += text.Length - (end - begin);
}
public void HandleContentChanged(object sender, ContentChangedEventArgs e)
{
UiImpl ui = (UiImpl)sender;
Document doc = ui.Document;
int lineIndex;
int lineHead, lineEnd;
bool shouldBeRedrawn;
if (doc.MarksUri == false)
{
return;
}
// update marking in this line
lineIndex = doc.GetLineIndexFromCharIndex(e.Index);
shouldBeRedrawn = MarkOrUnmarkOneLine(doc, lineIndex, true);
if (shouldBeRedrawn)
{
// update entire graphic of the logical line
// if marking bits associated with any character was changed
lineHead = doc.GetLineHeadIndex(lineIndex);
lineEnd = lineHead + doc.GetLineLength(lineIndex);
ui.View.Invalidate(lineHead, lineEnd);
}
}
/// <summary>
/// Pastes clipboard content at where the caret is at.
/// </summary>
public static void Paste(IUserInterface ui)
{
Document doc = ui.Document;
string clipboardText;
int begin, end;
int insertIndex;
TextDataType dataType;
// do nothing if the document is read-only
if (doc.IsReadOnly)
{
Plat.Inst.MessageBeep();
return;
}
// get clipboard content
clipboardText = Plat.Inst.GetClipboardText(out dataType);
if (clipboardText == null)
{
return;
}
// limit the content in a single line if it's in single line mode
if (ui.IsSingleLineMode)
{
int eolIndex = clipboardText.IndexOfAny(new char[] { '\r', '\n' });
if (0 <= eolIndex)
{
clipboardText = clipboardText.Remove(eolIndex, clipboardText.Length - eolIndex);
}
}
// begin grouping edit action
doc.BeginUndo();
// delete currently selected text before insertion
doc.GetSelection(out begin, out end);
if (doc.RectSelectRanges != null)
{
//--- case of rectangle selection ---
// delete selected text
doc.DeleteRectSelectText();
ui.View.Invalidate();
}
else if (begin != end)
{
//--- case of normal selection ---
// delete selected text
doc.Replace("");
}
// paste according type of the text data
if (dataType == TextDataType.Rectangle)
{
//--- rectangle text data ---
Point insertPos;
int rowBegin;
int rowEnd;
string rowText;
string padding;
// Insert every row at same column position
insertPos = ui.View.GetVirPosFromIndex(doc.CaretIndex);
rowBegin = 0;
rowEnd = TextUtil.NextLineHead(clipboardText, rowBegin);
while (0 <= rowEnd)
{
// get this row content
if (clipboardText[rowEnd - 1] == '\n')
{
if (clipboardText[rowEnd - 2] == '\r')
{
rowText = clipboardText.Substring(rowBegin, rowEnd - rowBegin - 2);
}
else
{
rowText = clipboardText.Substring(rowBegin, rowEnd - rowBegin - 1);
}
}
else if (clipboardText[rowEnd - 1] == '\r')
{
rowText = clipboardText.Substring(rowBegin, rowEnd - rowBegin - 1);
}
else
{
rowText = clipboardText.Substring(rowBegin, rowEnd - rowBegin);
}
// pad tabs if needed
padding = UiImpl.GetNeededPaddingChars(ui, insertPos, false);
// insert this row
insertIndex = ui.View.GetIndexFromVirPos(insertPos);
doc.Replace(padding.ToString() + rowText, insertIndex, insertIndex);
// goto next line
insertPos.Y += ui.LineSpacing;
rowBegin = rowEnd;
rowEnd = TextUtil.NextLineHead(clipboardText, rowBegin);
}
}
else
{
//--- normal or line text data ---
// calculate insertion index
insertIndex = begin;
if (dataType == TextDataType.Line)
{
// make the insertion point to caret line head if it is line data type
insertIndex = doc.GetLineHeadIndexFromCharIndex(begin);
}
// insert
doc.Replace(clipboardText, insertIndex, insertIndex);
}
// end grouping UNDO action
doc.EndUndo();
// move caret
if (ui.UsesStickyCaret == false)
{
ui.View.SetDesiredColumn();
}
ui.ScrollToCaret();
}