protected override void EraseSelectedText(bool modifyText = true)
{
if (GetSelectionLength() != 0)
{
// setup new caret position and remove selection highlight.
SetCaretIndex(_selectionStart);
ClearSelection();
// erase the selected characters (if required)
if (modifyText)
{
var newText = GetText();
var undo = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_DELETE,
d_startIdx = GetSelectionStart(),
d_text =
newText.CEGuiSubstring(GetSelectionStart(),
GetSelectionLength())
};
_undoHandler.AddUndoHistory(undo);
newText = GetText().Remove(GetSelectionStart(), GetSelectionLength());
SetText(newText);
// trigger notification that text has changed.
OnTextChanged(new WindowEventArgs(this));
}
}
}
/// <summary>
/// Processing for backspace key
/// </summary>
protected override void HandleBackspace()
{
if (!IsReadOnly())
{
var tmp = GetText();
if (GetSelectionLength() != 0)
{
var undoSelection = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_DELETE,
d_startIdx = GetSelectionStart(),
d_text = tmp.CEGuiSubstring(GetSelectionStart(), GetSelectionLength())
};
tmp = tmp.Remove(GetSelectionStart(), GetSelectionLength());
if (HandleValidityChangeForString(tmp))
{
// erase selection using mode that does not modify getText()
// (we just want to update state)
EraseSelectedText(false);
// set text to the newly modified string
SetText(tmp);
_undoHandler.AddUndoHistory(undoSelection);
}
}
else if (GetCaretIndex() > 0)
{
var undo = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_DELETE,
d_startIdx = _caretPos - 1,
d_text = tmp.CEGuiSubstring(_caretPos - 1, 1)
};
tmp = tmp.Remove(_caretPos - 1, 1);
if (HandleValidityChangeForString(tmp))
{
SetCaretIndex(_caretPos - 1);
// set text to the newly modified string
SetText(tmp);
_undoHandler.AddUndoHistory(undo);
}
}
}
}
// protected internal override void OnCursorMove(CursorInputEventArgs e)
// {
// // base class processing
// base.OnCursorMove(e);
// if (_dragging)
// {
// var anchorIdx = GetTextIndexFromPosition(e.Position);
//#if CEGUI_BIDI_SUPPORT
// if (d_bidiVisualMapping.GetV2lMapping().Count > anchorIdx)
// anchorIdx = d_bidiVisualMapping.GetV2lMapping()[anchorIdx];
//#endif
// SetCaretIndex(anchorIdx);
// SetSelection(_caretPos, _dragAnchorIdx);
// }
// ++e.handled;
// }
protected internal override void OnCharacter(TextEventArgs e)
{
// NB: We are not calling the base class handler here because it propogates
// inputs back up the window hierarchy, whereas, as a consumer of key
// events, we want such propogation to cease with us regardless of whether
// we actually handle the event.
// fire event.
FireEvent(EventCharacterKey, e, EventNamespace);
// only need to take notice if we have focus
if (e.handled == 0 && HasInputFocus() && !IsReadOnly() &&
GetFont().IsCodepointAvailable(e.d_character))
{
// backup current text
var tmp = GetText();
var undoSelection = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_DELETE,
d_startIdx = GetSelectionStart(),
d_text = tmp.CEGuiSubstring(GetSelectionStart(), GetSelectionLength())
};
tmp = tmp.Remove(GetSelectionStart(), GetSelectionLength());
// if there is room
if (tmp.Length < _maxTextLen)
{
var undo = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_INSERT,
d_startIdx = GetSelectionStart(),
d_text = e.d_character.ToString(global::System.Globalization.CultureInfo.InvariantCulture)
};
tmp = tmp.Insert(GetSelectionStart(),
e.d_character.ToString(global::System.Globalization.CultureInfo.InvariantCulture));
if (HandleValidityChangeForString(tmp))
{
// erase selection using mode that does not modify getText()
// (we just want to update state)
EraseSelectedText(false);
// advance caret (done first so we can "do stuff" in event handlers!)
_caretPos++;
// set text to the newly modified string
SetText(tmp);
// char was accepted into the Editbox - mark event as handled.
++e.handled;
_undoHandler.AddUndoHistory(undo);
if (GetSelectionLength() > 0)
{
_undoHandler.AddUndoHistory(undoSelection);
}
}
}
else
{
// Trigger text box full event
OnEditboxFullEvent(new WindowEventArgs(this));
}
}
}
public override bool PerformPaste(Clipboard clipboard)
{
if (IsReadOnly())
{
return(false);
}
var clipboardText = clipboard.GetText();
if (String.IsNullOrEmpty(clipboardText))
{
return(false);
}
// backup current text
var tmp = GetText();
var undoSelection = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_DELETE,
d_startIdx = GetSelectionStart(),
d_text = tmp.CEGuiSubstring(GetSelectionStart(), GetSelectionLength())
};
tmp = tmp.Remove(GetSelectionStart(), GetSelectionLength());
// if there is room
if (tmp.Length < _maxTextLen)
{
var undo = new UndoHandler.UndoAction
{
d_type = UndoHandler.UndoActionType.UAT_INSERT,
d_startIdx = GetCaretIndex(),
d_text = clipboardText
};
tmp = tmp.Insert(GetSelectionStart(), clipboardText);
if (HandleValidityChangeForString(tmp))
{
// erase selection using mode that does not modify getText()
// (we just want to update state)
EraseSelectedText(false);
// advance caret (done first so we can "do stuff" in event
// handlers!)
_caretPos += clipboardText.Length;
// set text to the newly modified string
SetText(tmp);
_undoHandler.AddUndoHistory(undo);
if (GetSelectionLength() > 0)
{
_undoHandler.AddUndoHistory(undoSelection);
}
return(true);
}
}
return(false);
}
