/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * 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'
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 */

#ifndef GCN_TEXTBOX_HPP
#define GCN_TEXTBOX_HPP

#include <ctime>
#include <string>
#include <vector>

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

namespace gcn
{
	/**
	 * A TextBox in which you can write and/or display a lines of text.
	 *
	 * NOTE: A plain TextBox is really uggly and looks much better inside a
	 *       ScrollArea.
	 */
	class GCN_CORE_DECLSPEC TextBox :
		public Widget,
		public MouseListener,
		public KeyListener
	{
	public:
		/**
		 * Constructor.
		 */
		TextBox();

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

		/**
		 * Sets the text.
		 *
		 * @param text the text of the TextBox.
		 */
		void setText(const std::string& text);

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

		/**
		 * Gets the row of a text.
		 *
		 * @return the text of a certain row in the TextBox.
		 */
		const std::string& getTextRow(int row) const;

		/**
		 * Sets the text of a certain row in a TextBox.
		 *
		 * @param row the row number.
		 * @param text the text of a certain row in the TextBox.
		 */
		void setTextRow(int row, const std::string& text);

		/**
		 * Gets the number of rows in the text.
		 *
		 * @return the number of rows in the text.
		 */
		unsigned int getNumberOfRows() const;

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

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

		/**
		 * Gets the row the caret is in in the text.
		 *
		 * @return the row the caret is in in the text.
		 */
		unsigned int getCaretRow() const;

		/**
		 * Sets the row the caret should be in in the text.
		 *
		 * @param row the row number.
		 */
		void setCaretRow(int row);

		/**
		 * Gets the column the caret is in in the text.
		 *
		 * @return the column the caret is in in the text.
		 */
		unsigned int getCaretColumn() const;

		/**
		 * Sets the column the caret should be in in the text.
		 *
		 * @param column the column number.
		 */
		void setCaretColumn(int column);

		/**
		 * Sets the row and the column the caret should be in in the text.
		 *
		 * @param row the row number.
		 * @param column the column number.
		 */
		void setCaretRowColumn(int row, int column);

		/**
		 * Scrolls the text to the caret if the TextBox is in a ScrollArea.
		 */
		virtual void scrollToCaret();

		/**
		 * Checks if the TextBox is editable.
		 *
		 * @return true it the TextBox is editable.
		 */
		bool isEditable() const;

		/**
		 * Sets if the TextBox should be editable or not.
		 *
		 * @param editable true if the TextBox should be editable.
		 */
		void setEditable(bool editable);

		/**
		 * Adds a text row to the text.
		 *
		 * @param row a row.
		 */
		virtual void addRow(const std::string row);

		/**
		 * Checks if the TextBox is opaque
		 *
		 * @return true if the TextBox is opaque
		 */
		bool isOpaque();

		/**
		 * Sets the TextBox to be opaque.
		 *
		 * @param opaque true if the TextBox should be opaque.
		 */
		void setOpaque(bool opaque);


		// Inherited from Widget

		virtual void draw(Graphics* graphics);

		virtual void drawBorder(Graphics* graphics);

		virtual void fontChanged();


		// Inherited from KeyListener

		virtual void keyPressed(KeyEvent& keyEvent);


		// Inherited from MouseListener

		virtual void mousePressed(MouseEvent& mouseEvent);

		virtual void mouseDragged(MouseEvent& mouseEvent);

	protected:
		/**
		 * Draws the caret.
		 *
		 * @param graphics a Graphics object to draw with.
		 * @param x the x position.
		 * @param y the y position.
		 */
		virtual void drawCaret(Graphics* graphics, int x, int y);

		/**
		 * Adjusts the TextBox size to fit the font size.
		 */
		virtual void adjustSize();

		std::vector<std::string> mTextRows;
		int mCaretColumn;
		int mCaretRow;
		bool mEditable;
		bool mOpaque;
	};
}

#endif // end GCN_TEXTBOX_HPP
