private void HandlePress(KeyboardState state)
{
bool shift = false;
bool capslock = false;
int previousCaretPosition = caretPosition;
if (state.IsKeyDown(Keys.LeftShift) || state.IsKeyDown(Keys.RightShift))
{
shift = true;
}
// jos on sallittu liikkuminen tekstissä
if (IsTravelsingEnabled)
{
// halutaan päästä vasemmalle
if (state.IsKeyDown(Keys.Left))
{
caretPosition = (int)MathHelper.Clamp(caretPosition - 1, 0, int.MaxValue);
}
// halutaan oikealle
else if (state.IsKeyDown(Keys.Right))
{
caretPosition = (int)MathHelper.Clamp(caretPosition + 1, 0, text.Length);
}
// halutaan tekstin loppuun
else if (state.IsKeyDown(Keys.End))
{
caretPosition = text.Length;
if (caretPosition < 0)
{
caretPosition = 0;
}
}
// halutaan tekstin alkuun
else if (state.IsKeyDown(Keys.Home))
{
caretPosition = 0;
}
if (IsTextSelectionEnabled && !shift)
{
if (previousCaretPosition != caretPosition)
{
// selectionia ei ole ennää
SelectionStartIndex = -1;
SelectionEndIndex = -1;
selectedText = "";
}
}
}
if (IsTextSelectionEnabled)
{
if ((state.IsKeyDown(Keys.LeftControl) || state.IsKeyDown(Keys.RightControl)) && state.IsKeyDown(Keys.A))
{
selectedText = text.ToString();
SelectionStartIndex = 0;
SelectionEndIndex = text.Length;
return;
}
else if (shift)
{
if (state.IsKeyDown(Keys.Left))
{
// ei ole selectionia
if (SelectionStartIndex == -1)
{
SelectionStartIndex = caretPosition;
if (SelectionEndIndex == -1)
{
SelectionEndIndex = caretPosition + 1;
}
}
if (caretPosition < SelectionStartIndex)
{
SelectionStartIndex = caretPosition;
}
if (caretPosition > SelectionStartIndex)
{
SelectionEndIndex = caretPosition;
}
}
else if (state.IsKeyDown(Keys.Right))
{
if (SelectionEndIndex == -1)
{
SelectionStartIndex = caretPosition - 1;
SelectionEndIndex = caretPosition;
return;
}
if (caretPosition > SelectionEndIndex)
{
SelectionEndIndex = caretPosition;
}
if (caretPosition - 1 == SelectionStartIndex)
{
SelectionStartIndex = caretPosition;
if (SelectionStartIndex == SelectionEndIndex)
{
SelectionEndIndex = -1;
SelectionStartIndex = -1;
selectedText = "";
}
}
}
// selection nykyisestä kohdasta alkuun
else if (state.IsKeyDown(Keys.Home))
{
if (Text.Length != 0 && previousCaretPosition != 0)
{
SelectionStartIndex = 0;
SelectionEndIndex = previousCaretPosition;
}
}
// halutaan loppuun
else if (state.IsKeyDown(Keys.End))
{
if (Text.Length != 0 && previousCaretPosition != Text.Length)
{
SelectionStartIndex = previousCaretPosition;
SelectionEndIndex = caretPosition;
}
}
if (SelectionStartIndex != -1 && SelectionEndIndex != -1)
{
selectedText = Text.Substring(SelectionStartIndex, SelectionEndIndex - SelectionStartIndex);
}
}
HandleCopyPaste(state);
}
// halutaan pyyhkiä tekstiä
if (state.IsKeyDown(Keys.Back))
{
if (text.Length != 0)
{
if (IsTextSelectionEnabled)
{
// jos on valittu jotain
if (!SelectedText.Equals(""))
{
caretPosition = SelectionStartIndex;
text.Remove(SelectionStartIndex, selectedText.Length);
selectedText = "";
SelectionStartIndex = -1;
SelectionEndIndex = -1;
return;
}
}
// jos ollaan tekstin alussa ei tarvi tehä yhtään mitään
if (caretPosition == 0)
{
return;
}
text.Remove(caretPosition - 1, 1);
caretPosition--;
}
caretPosition = (int)MathHelper.Clamp(caretPosition, 0, text.Length);
}
else
{
Keys[] pressed = state.GetPressedKeys();
List <Keys> pressedKeys = pressed.ToList();
if (lastKeys.Length != pressed.Length)
{
for (int i = pressed.Length - 1; i >= 0; i--)
{
if (lastKeys.Contains(pressed[i]))
{
pressedKeys.Remove(pressedKeys[i]);
}
}
}
foreach (Keys key in pressedKeys)
{
string s = TranslateKey(key, shift, capslock);
if (s.Length != 0)
{
if (IsTextSelectionEnabled && IsTextSelected)
{
text.Remove(SelectionStartIndex, SelectionEndIndex - SelectionStartIndex);
text.Insert(SelectionStartIndex, s);
caretPosition = SelectionStartIndex + 1;
SelectionEndIndex = -1;
SelectionStartIndex = -1;
selectedText = "";
}
else
{
text.Insert(caretPosition, s);
caretPosition++;
}
}
break;
}
}
}
