/// <summary>
/// tabs over the selected code
/// </summary>
/// <param name="code"></param>
/// <param name="selStart"></param>
/// <param name="selEnd"></param>
/// <returns></returns>
public static string InsertTabs(string code, int selStart, int selEnd)
{
//back up to previous newline or start
//insert a tab
StringBuilder sb = new StringBuilder(code);
//move past next \r\n
int start = CodeFormatter.GetLineStartIndex(code, selStart);
string chunk = code.Substring(start, selEnd - start);
string tabbed = chunk.Replace("\r\n", "\r\n ");
//now extract the selected code and replace it with the tabbed code
string left = code.Substring(0, start);
string right = code.Substring(selEnd);
string newCode = left + tabbed + right;
return(newCode);
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
if (e.KeyChar == '\t')
{
if (SelectionLength == 0)
{//tabbing a line or inserting a template
if (lastKeys.Count == 4)
{
if (lastKeys[0] == Keys.I &&
lastKeys[1] == Keys.F &&
lastKeys[2] == Keys.Tab &&
lastKeys[3] == Keys.Tab)
{//insert if () { }
//delete previous 6 spaces
int selStart = SelectionStart;
string s = Text.Remove(SelectionStart - 5, 5);
Text = s;
SelectionStart = selStart - 5;
string template = " ( )\r\n";
int indents = CodeFormatter.GetIndentSize(s, selStart - 5);
string spaces = "";
for (int i = 0; i < indents; i++)
{
spaces += ' ';
;
}
template += spaces + "{\r\n" + spaces + "}\r\n";
s = s.Insert(SelectionStart, template);
Text = s;
SelectionStart = selStart - 2;
}
else if (lastKeys[0] == Keys.S &&
lastKeys[1] == Keys.E &&
lastKeys[2] == Keys.Tab &&
lastKeys[3] == Keys.Tab)
{
int selStart = SelectionStart;
string s = Text.Remove(SelectionStart - 5, 5);
Text = s;
SelectionStart = selStart - 5;
string template = " \r\n";
int indents = CodeFormatter.GetIndentSize(s, selStart - 5);
string spaces = "";
string dblspaces = "";
int indentLevel = indents / 5;
for (int i = 0; i < indents; i++)
{
spaces += ' ';
}
for (int i = 0; i < 5 * (indentLevel + 1); i++)
{
dblspaces += ' ';
}
template += spaces + "{\r\n" + dblspaces + "\r\n" + spaces + "}\r\n";
s = s.Insert(SelectionStart, template);
Text = s;
SelectionStart = selStart + dblspaces.Length + 1;
}
else
{
Paste(" ");
}
}
else
{
Paste(" ");
}
e.Handled = true;
}
else
{//block tabbing
string newCode = CodeFormatter.InsertTabs(Text,
SelectionStart,
SelectionStart + SelectionLength);
Text = newCode;
e.Handled = true;
}
}
}