--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/core/gui/widgets/utf8textbox.cpp	Sat Mar 21 10:38:11 2009 +0000
@@ -0,0 +1,225 @@
+/***************************************************************************
+ *   Copyright (C) 2009 by the FIFE team                                   *
+ *   http://www.fifengine.de                                               *
+ *   This file is part of FIFE.                                            *
+ *                                                                         *
+ *   FIFE is free software; you can redistribute it and/or                 *
+ *   modify it under the terms of the GNU Lesser General Public            *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2.1 of the License, or (at your option) any later version.    *
+ *                                                                         *
+ *   This library is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with this library; if not, write to the                 *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
+ ***************************************************************************/
+
+// Standard C++ library includes
+#include <cassert>
+
+// 3rd party library includes
+
+// FIFE includes
+// These includes are split up in two parts, separated by one empty line
+// First block: files included from the FIFE root src directory
+// Second block: files included from the same folder
+#include "util/utf8/utf8.h"
+
+#include "utf8textbox.h"
+
+namespace gcn {
+
+	UTF8TextBox::UTF8TextBox(const std::string & text)
+		:TextBox(text)
+	{
+		mStringEditor = new UTF8StringEditor();
+	}
+
+	UTF8TextBox::~ UTF8TextBox()
+	{
+		delete mStringEditor;
+	}
+
+	void UTF8TextBox::keyPressed(KeyEvent& keyEvent)
+	{
+		Key key = keyEvent.getKey();
+
+		if (key.getValue() == Key::LEFT)
+		{
+			if (mCaretColumn == 0)
+			{
+				if (mCaretRow > 0)
+				{
+					mCaretRow--;
+					mCaretColumn = mTextRows[mCaretRow].size();
+				}
+			}
+			else
+			{
+				mCaretColumn = mStringEditor->prevChar(mTextRows[mCaretRow], mCaretColumn);
+			}
+		}
+		else if (key.getValue() == Key::RIGHT)
+		{
+			if (mCaretColumn < mTextRows[mCaretRow].size())
+			{
+				mCaretColumn = mStringEditor->nextChar(mTextRows[mCaretRow], mCaretColumn);
+			}
+			else
+			{
+				if (mCaretRow < mTextRows.size() - 1)
+				{
+					mCaretRow++;
+					mCaretColumn = 0;
+				}
+			}
+		}
+		else if (key.getValue() == Key::DOWN)
+		{
+			setCaretRowUTF8(mCaretRow + 1);
+		}
+
+		else if (key.getValue() == Key::UP)
+		{
+			setCaretRowUTF8(mCaretRow - 1);
+		}
+
+		else if (key.getValue() == Key::HOME)
+		{
+			mCaretColumn = 0;
+		}
+
+		else if (key.getValue() == Key::END)
+		{
+			mCaretColumn = mTextRows[mCaretRow].size();
+		}
+
+		else if (key.getValue() == Key::ENTER && mEditable)
+		{
+			mTextRows.insert(mTextRows.begin() + mCaretRow + 1,
+								mTextRows[mCaretRow].substr(mCaretColumn, mTextRows[mCaretRow].size() - mCaretColumn));
+			mTextRows[mCaretRow].resize(mCaretColumn);
+			++mCaretRow;
+			mCaretColumn = 0;
+		}
+
+		else if (key.getValue() == Key::BACKSPACE
+					&& mCaretColumn != 0
+					&& mEditable)
+		{
+			mCaretColumn = mStringEditor->prevChar(mTextRows[mCaretRow], mCaretColumn);
+			mCaretColumn = mStringEditor->eraseChar(mTextRows[mCaretRow], mCaretColumn);
+		}
+
+		else if (key.getValue() == Key::BACKSPACE
+					&& mCaretColumn == 0
+					&& mCaretRow != 0
+					&& mEditable)
+		{
+			mCaretColumn = mTextRows[mCaretRow - 1].size();
+			mTextRows[mCaretRow - 1] += mTextRows[mCaretRow];
+			mTextRows.erase(mTextRows.begin() + mCaretRow);
+			mCaretRow--;
+		}
+
+		else if (key.getValue() == Key::DELETE
+					&& mCaretColumn < (int)mTextRows[mCaretRow].size()
+					&& mEditable)
+		{
+			mCaretColumn = mStringEditor->eraseChar(mTextRows[mCaretRow], mCaretColumn);
+		}
+
+		else if (key.getValue() == Key::DELETE
+					&& mCaretColumn == (int)mTextRows[mCaretRow].size()
+					&& mCaretRow < ((int)mTextRows.size() - 1)
+					&& mEditable)
+		{
+			mTextRows[mCaretRow] += mTextRows[mCaretRow + 1];
+			mTextRows.erase(mTextRows.begin() + mCaretRow + 1);
+		}
+
+		else if(key.getValue() == Key::PAGE_UP)
+		{
+			Widget* par = getParent();
+
+			if (par != NULL)
+			{
+				int rowsPerPage = par->getChildrenArea().height / getFont()->getHeight();
+				int chars = mStringEditor->countChars(mTextRows[mCaretRow], mCaretColumn);
+				mCaretRow -= rowsPerPage;
+
+				if (mCaretRow < 0)
+				{
+					mCaretRow = 0;
+				}
+				mCaretColumn = mStringEditor->getOffset(mTextRows[mCaretRow], chars);
+			}
+		}
+
+		else if(key.getValue() == Key::PAGE_DOWN)
+		{
+			Widget* par = getParent();
+
+			if (par != NULL)
+			{
+				int rowsPerPage = par->getChildrenArea().height / getFont()->getHeight();
+				int chars = mStringEditor->countChars(mTextRows[mCaretRow], mCaretColumn);
+				mCaretRow += rowsPerPage;
+
+				if (mCaretRow >= (int)mTextRows.size())
+				{
+					mCaretRow = mTextRows.size() - 1;
+				}
+
+				mCaretColumn = mStringEditor->getOffset(mTextRows[mCaretRow], chars);
+			}
+		}
+
+		else if(key.getValue() == Key::TAB
+				&& mEditable)
+		{
+			// FIXME: jump X spaces, so mCaretColumn % TAB_SIZE = 0 and X <= TAB_SIZE
+			mTextRows[mCaretRow].insert(mCaretColumn,std::string("    "));
+			mCaretColumn += 4;
+		}
+
+		else if ((key.isCharacter() || key.getValue() > 255)
+					&& mEditable)
+		{
+			mCaretColumn = mStringEditor->insertChar(mTextRows[mCaretRow], mCaretColumn, key.getValue());
+		}
+
+		adjustSize();
+		scrollToCaret();
+		assert( utf8::is_valid(mTextRows[mCaretRow].begin(),mTextRows[mCaretRow].end()) );
+		assert( utf8::is_valid(mTextRows[mCaretRow].begin(),mTextRows[mCaretRow].begin() + mCaretColumn) );
+		keyEvent.consume();
+	}
+
+
+	void UTF8TextBox::setCaretColumnUTF8(int column)
+	{
+		// no need to clip the column, mStringEditor handles it automaticly
+		mCaretColumn = mStringEditor->getOffset(mTextRows[mCaretRow], column);
+	}
+
+	void UTF8TextBox::setCaretRowUTF8(int row)
+	{
+		int chars = mStringEditor->countChars(mTextRows[mCaretRow], mCaretColumn);
+		if (row < 0) {
+			row = 0;
+		} else if (row >= mTextRows.size()) {
+			row = mTextRows.size() - 1;
+		}
+		mCaretRow = row;
+		mCaretColumn = mStringEditor->getOffset(mTextRows[mCaretRow], chars);
+	}
+
+}
+
+