/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * 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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 * 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_BUTTON_HPP
#define GCN_BUTTON_HPP

#include <string>

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

namespace gcn
{
	/**
	 * A regular button. Add an ActionListener to it to know when it
	 * has been clicked.
	 *
	 * NOTE: You can only have text (a caption) on the button. If you want it
	 *       to handle, for instance images, you can implement an ImageButton
	 *       of your own and overload member functions from Button.
	 */
	class GCN_CORE_DECLSPEC Button : public Widget,
	                                 public MouseListener,
	                                 public KeyListener,
	                                 public FocusListener
	{
	public:
		/**
		 * Constructor.
		 */
		Button();

		/**
		 * Constructor.
		 *
		 * @param caption the caption of the Button.
		 */
		Button(const std::string& caption);

		/**
		 * Sets the Button caption.
		 *
		 * @param caption the Button caption.
		 */
		void setCaption(const std::string& caption);

		/**
		 * Gets the Button caption.
		 *
		 * @return the Button caption.
		 */
		const std::string& getCaption() const;

		/**
		 * Sets the alignment for the caption.
		 *
		 * @param alignment Graphics::LEFT, Graphics::CENTER or Graphics::RIGHT
		 * @see Graphics
		 */
		void setAlignment(unsigned int alignment);

		/**
		 * Gets the alignment for the caption.
		 *
		 * @return alignment of caption.
		 */
		unsigned int getAlignment() const;

		/**
		 * Sets the spacing between the border of this button and its caption.
		 *
		 * @param spacing is a number between 0 and 255. The default value for 
		                  spacing is 4 and can be changed using this method.
		 */
		void setSpacing(unsigned int spacing);

		/**
		 * Gets the spacing between the border of this button and its caption.
		 *
		 * @return spacing.
		 */
		unsigned int getSpacing() const;

		/**
		 * Adjusts the buttons size to fit the content.
		 */
		void adjustSize();

		/**
		 * Checks if the button is pressed down. Useful when drawing.
		 *
		 * @return true if the button is pressed down.
		 */
		bool isPressed() const;


		//Inherited from Widget

		virtual void draw(Graphics* graphics);

		virtual void drawBorder(Graphics* graphics);


		// Inherited from FocusListener

		virtual void focusLost(const Event& event);


		// Inherited from MouseListener

		virtual void mousePressed(MouseEvent& mouseEvent);

		virtual void mouseReleased(MouseEvent& mouseEvent);

		virtual void mouseEntered(MouseEvent& mouseEvent);

		virtual void mouseExited(MouseEvent& mouseEvent);

		virtual void mouseDragged(MouseEvent& mouseEvent);


		// Inherited from KeyListener

		virtual void keyPressed(KeyEvent& keyEvent);

		virtual void keyReleased(KeyEvent& keyEvent);

	protected:
		std::string mCaption;
		bool mHasMouse;
		bool mKeyPressed;
		bool mMousePressed;
		unsigned int mAlignment;
		unsigned int mSpacing;
	};
}

#endif // end GCN_BUTTON_HPP
