/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004, 2005, 2006, 2007 Olof Naessén and Per Larsson
 *
 *                                                         Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
 * Visit: http://guichan.darkbits.org             )Qk<P ` _: :+' .'  "{[
 *                                               .)j(] .d_/ '-(  P .   S
 * License: (BSD)                                <Td/Z <fP"5(\"??"\a.  .L
 * Redistribution and use in source and          _dV>ws?a-?'      ._/L  #'
 * binary forms, with or without                 )4d[#7r, .   '     )d`)[
 * modification, are permitted provided         _Q-5'5W..j/?'   -?!\)cam'
 * that the following conditions are met:       j<<WP+k/);.        _W=j f
 * 1. Redistributions of source code must       .$%w\/]Q  . ."'  .  mj$
 *    retain the above copyright notice,        ]E.pYY(Q]>.   a     J@\
 *    this list of conditions and the           j(]1u<sE"L,. .   ./^ ]{a
 *    following disclaimer.                     4'_uomm\.  )L);-4     (3=
 * 2. Redistributions in binary form must        )_]X{Z('a_"a7'<a"a,  ]"[
 *    reproduce the above copyright notice,       #}<]m7`Za??4,P-"'7. ).m
 *    this list of conditions and the            ]d2e)Q(<Q(  ?94   b-  LQ/
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 *    documentation and/or other materials      .Z!=J ]e []('-4f _ ) -.)m]'
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 * 3. Neither the name of Guichan nor the      :$we` _! + _/ .        j?
 *    names of its contributors may be used     =3)= _f  (_yQmWW$#(    "
 *    to endorse or promote products derived     -   W,  sQQQQmZQ#Wwa]..
 *    from this software without specific        (js, \[QQW$QWW#?!V"".
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 *                                                 -]n w/ '         [.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT       )/ )/           !
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY         <  (; sac    ,    '
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 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF            c <   r
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE          5%  )P'-3L
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR        _bQf` y`..)a
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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES               _Pa,)!f/<[]/  ?"
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION)                     ^
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef GCN_TEXTFIELD_HPP
#define GCN_TEXTFIELD_HPP

#include "guisan/keylistener.hpp"
#include "guisan/mouselistener.hpp"
#include "guisan/platform.hpp"
#include "guisan/widget.hpp"

#include <string>

namespace gcn
{
	/**
	 * A text field in which you can write or display a line of text.
	 */
	class GCN_CORE_DECLSPEC TextField :
		public Widget,
		public MouseListener,
		public KeyListener
	{
	public:
		/**
		 * Default constructor.
		 */
		TextField();

		/**
		 * Constructor. Initializes the textfield with a given string.
		 *
		 * @param text the initial text.
		 */
		TextField(const std::string& text);

		/**
		 * Sets the text.
		 *
		 * @param text the new text in the TextField.
		 */
		void setText(const std::string& text);

		/**
		 * Gets the text.
		 *
		 * @return the text of the TextField.
		 */
		const std::string& getText() const;

		/**
		 * Draws the caret (the little marker in the text that shows where the
		 * letters you type will appear). Easily overloaded if you want to
		 * change the style of the caret.
		 *
		 * @param graphics the Graphics object to draw with.
		 * @param x the caret's x-position.
		 */
		virtual void drawCaret(Graphics* graphics, int x);

		/**
		 * Adjusts the size of the TextField to fit the font size. The
		 * constructor taking a string uses this function to initialize the
		 * size of the TextField.
		 */
		void adjustSize();

		/**
		 * Adjusts the height of the text field to fit the font size. The
		 * height of the TextField is initialized with this function by the
		 * constructors.
		 */
		void adjustHeight();

		/**
		 * Sets the caret position.
		 *
		 * @param position the caret position.
		 */
		void setCaretPosition(unsigned int position);

		/**
		 * Gets the caret position.
		 *
		 * @return the caret position.
		 */
		unsigned int getCaretPosition() const;


		// Inherited from Widget

		virtual void fontChanged();

		virtual void draw(Graphics* graphics);

		virtual void drawBorder(Graphics* graphics);


		// Inherited from MouseListener

		virtual void mousePressed(MouseEvent& mouseEvent);

		virtual void mouseDragged(MouseEvent& mouseEvent);


		// Inherited from KeyListener

		virtual void keyPressed(KeyEvent& keyEvent);

	protected:
		/**
		 * Scrolls the text horizontally so that the caret shows if needed.
		 */
		void fixScroll();

		std::string mText;
		unsigned int mCaretPosition;
		int mXScroll;
	};
}

#endif // end GCN_TEXTFIELD_HPP
