/// <summary>
/// Constructor
/// </summary>
/// <param name="tb">Underlaying textbox</param>
/// <param name="insertedText">Text for inserting</param>
public InsertTextCommand(TextSource ts, string insertedText)
: base(ts)
{
this.insertedText = insertedText;
}
internal static void InsertChar(char c, ref char deletedChar, TextSource ts)
{
var tb = ts.CurrentTB;
switch (c)
{
case '\n':
if (!ts.CurrentTB.allowInsertRemoveLines)
{
throw new ArgumentOutOfRangeException("Cant insert this char in ColumnRange mode");
}
if (ts.Count == 0)
{
InsertLine(ts);
}
InsertLine(ts);
break;
case '\r': break;
case (char)1:
case '\b': //backspace
if (tb.Selection.Start.iChar == 0 && tb.Selection.Start.iLine == 0)
{
return;
}
if (tb.Selection.Start.iChar == 0)
{
if (!ts.CurrentTB.allowInsertRemoveLines)
{
throw new ArgumentOutOfRangeException("Cant insert this char in ColumnRange mode");
}
if (tb.lineInfos[tb.Selection.Start.iLine - 1].VisibleState != VisibleState.Visible)
{
tb.ExpandBlock(tb.Selection.Start.iLine - 1);
}
deletedChar = '\n';
MergeLines(tb.Selection.Start.iLine - 1, ts);
}
else
{
int tl = tb.TabLength;
deletedChar = ts[tb.Selection.Start.iLine][tb.Selection.Start.iChar - 1].c;
do
{
ts[tb.Selection.Start.iLine].RemoveAt(tb.Selection.Start.iChar - 1);
tb.Selection.Start = new Place(tb.Selection.Start.iChar + (c == (char)1 ? 0 : -1), tb.Selection.Start.iLine);
tl--;
if (c == (char)1 && tb.Selection.Start.iChar > 0 && tb.Selection.Start.iChar >= ts[tb.Selection.Start.iLine].Count)
{
tb.Selection.Start = new Place(tb.Selection.Start.iChar - 1, tb.Selection.Start.iLine);
break;
}
if (deletedChar != ' ' || tb.Selection.Start.iChar == 0)
{
if (c == (char)1 && tb.Selection.Start.iChar > 0)
{
tb.Selection.Start = new Place(tb.Selection.Start.iChar - 1, tb.Selection.Start.iLine);
}
break;
}
deletedChar = ts[tb.Selection.Start.iLine][tb.Selection.Start.iChar - 1].c;
if ((deletedChar != ' ' || tl == 0) && c == (char)1 && tb.Selection.Start.iChar > 0)
{
tb.Selection.Start = new Place(tb.Selection.Start.iChar - 1, tb.Selection.Start.iLine);
}
} while (deletedChar == ' ' && tl > 0);
}
break;
case '\t':
for (int i = 0; i < tb.TabLength; i++)
{
ts[tb.Selection.Start.iLine].Insert(tb.Selection.Start.iChar, new Char(' '));
}
tb.Selection.Start = new Place(tb.Selection.Start.iChar + tb.TabLength, tb.Selection.Start.iLine);
break;
default:
ts[tb.Selection.Start.iLine].Insert(tb.Selection.Start.iChar, new Char(c));
tb.Selection.Start = new Place(tb.Selection.Start.iChar + 1, tb.Selection.Start.iLine);
break;
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="tb">Underlaying textbox</param>
/// <param name="c">Inserting char</param>
public InsertCharCommand(TextSource ts, char c)
: base(ts)
{
this.c = c;
}