void ToggleModifier(int letterPos, char c, SequenceDisposition disposition)
{
string curLetter = GetLetterWithModifiers(letterPos);
int i = curLetter.IndexOf(c);
if (i > 0)
{
ToggleModifier(letterPos, c, disposition, false);
}
else
{
ToggleModifier(letterPos, c, disposition, true);
}
}
void CycleModifiers(char[] modifiers, char[][] exclusivityGroup, SequenceDisposition disposition, bool emptyStep)
{
string curLetter = CurLetterWithModifiers();
int i = curLetter.IndexOfAny(modifiers);
if (i < 0)
{
int sel = CurLetterPos() + curLetter.Length;
foreach (char[] arr in exclusivityGroup)
{
if (arr == modifiers)
{
continue;
}
foreach (char toDelete in arr)
{
if (curLetter.IndexOf(toDelete) > -1)
{
ToggleModifier(toDelete);
ModifierRemoved(CurLetterPos(), toDelete, exclusivityGroup);
}
}
}
ToggleModifier(modifiers[0], disposition);
ModifierAdded(CurLetterPos(), modifiers[0], exclusivityGroup);
}
else
{
char c = curLetter[i];
int j = Array.IndexOf(modifiers, c);
ToggleModifier(c);
ModifierRemoved(CurLetterPos(), c, exclusivityGroup);
j++;
if ((!emptyStep) && (j >= modifiers.Length))
{
j = 0;
}
if (j < modifiers.Length)
{
ToggleModifier(modifiers[j], disposition);
ModifierAdded(CurLetterPos(), modifiers[j], exclusivityGroup);
}
}
}
void ToggleModifier(int letterPos, char c, SequenceDisposition disposition, bool toggleOn)
{
string letter = GetLetterWithModifiers(letterPos);
string curLetter = CurLetterWithModifiers();
int sel = CurLetterPos() + curLetter.Length;
int i = letter.IndexOf(c);
if ((i > 0) && (!toggleOn))
{
for (; i > 0; i = letter.IndexOf(c))
{
letter = letter.Remove(i);
sel--;
}
}
else if (toggleOn)
{
int pos;
switch (disposition)
{
case SequenceDisposition.Last:
pos = letter.Length;
break;
case SequenceDisposition.Second:
pos = Math.Min(2, letter.Length);
break;
case SequenceDisposition.First:
default:
pos = 1;
break;
}
letter = letter.Insert(pos, c.ToString());
sel++;
}
ReplaceLetter(letterPos, letter);
this.SelectionStart = sel;
}
void ToggleModifier(char c, SequenceDisposition disposition)
{
ToggleModifier(CurLetterPos(), c, disposition);
}