/***************************************************************************
 *   Copyright (C) 2012 by the fifechan team                               *
 *   http://fifechan.github.com/fifechan                                   *
 *   This file is part of fifechan.                                        *
 *                                                                         *
 *   fifechan 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          *
 ***************************************************************************/

/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2007 - 2008 Josh Matthews and Olof Naessén
 *
 *
 * Per Larsson a.k.a finalman
 * Olof Naessén a.k.a jansem/yakslem
 *
 * Visit: http://guichan.sourceforge.net
 *
 * License: (BSD)
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Guichan nor the names of its contributors may
 *    be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 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 FCN_CONTRIB_ADJUSTINGCONTAINER_HPP
#define FCN_CONTRIB_ADJUSTINGCONTAINER_HPP

#include "fifechan/widgets/container.hpp"

#include <vector>

namespace fcn
{
    namespace contrib
    {
        /**
         * Self-adjusting Container class. AdjustingContainers are an easy way to
         * have Guichan position a group of widgets for you. It organizes elements
         * in a table layout, with fixed columns and variable rows.  The user specifies
         *
         * @verbitam
         * <ul>
         *   <li>the number of columns</li>
         *   <li>horizontal spacing between columns</li>
         *   <li>vertical spacing between rows</li>
         *   <li>padding around the sides of the container</li>
         *   <li>each column's alignment</li>
         * </ul>
         * @endverbitam
         *
         * These properties give the user a lot of flexibility to make the
         * widgets look just right.
         * @code
         * AdjustingContainer *adjust = new AdjustingContainer;
         * adjust->setPadding(5, 5, 5, 5); //left, right, top, bottom
         * adjust->setHorizontalSpacing(3);
         * adjust->setVerticalSpacing(3);
         * adjust->setColumns(3);
         * adjust->setColumnAlignment(0, AdjustingContainer::LEFT);
         * adjust->setColumnAlignment(1, AdjustingContainer::CENTER);
         * adjust->setColumnAlignment(2, AdjustingContainer::RIGHT);
         * top->add(adjust);
         *
         * for(int j = 0; j < 9; j++)
         * {
         *   fcn::Label *l;
         *   int r = rand() % 3;
         *   if(r == 0)
         *     l = new fcn::Label("Short");
         *   else if(r == 1)
         *     l = new fcn::Label("A longer phrase");
         *   else
         *     l = new fcn::Label("Extravagent and wordy text");
         *   adjust->add(l);
         * @endcode
         *
         * Output:
         * @verbitam
         * <pre>
         *+---------------------------------------------------------------------------+
         *|                                                                           |
         *| A longer phrase              Short             Extravagent and wordy text |
         *|                                                                           |
         *| Short             Extravagent and wordy text                        Short |
         *|                                                                           |
         *| Short                   A longer phrase                   A longer phrase |
         *|                                                                           |
         *+---------------------------------------------------------------------------+
         * </pre>
         * @endverbitam
         * As you can see, each column is only as big as its largest element.
         * The AdjustingContainer will resize itself and rearrange its contents
         * based on whatever widgets it contains, allowing dynamic addition and
         * removal while the program is running.  It also plays nicely with ScrollAreas,
         * allowing you to show a fixed, maximum size while not limiting the actual
         * container.
         *
         * For more help with using AdjustingContainers, try the Guichan forums
         * (http://guichan.sourceforge.net/forum/) or email mrlachatte@gmail.com.
         *
         * @author Josh Matthews
         */
        class AdjustingContainer : public fcn::Container
        {
        public:
            /**
             * Constructor.
             */
            AdjustingContainer();
        
            /**
             * Destructor.
             */
            virtual ~AdjustingContainer();
        
            /**
             * Set the number of columns to divide the widgets into.
             * The number of rows is derived automatically from the number
             * of widgets based on the number of columns.  Default column
             * alignment is left.
             *
             * @param numberOfColumns the number of columns.
             */
            virtual void setNumberOfColumns(unsigned int numberOfColumns);
        
            /**
             * Set a specific column's alignment.
             *
             * @param column the column number, starting from 0.
             * @param alignment the column's alignment. See enum with alignments.
             */
            virtual void setColumnAlignment(unsigned int column, unsigned int alignment);
        
            /**
             * Set the padding for the sides of the container.
             *
             * @param paddingLeft left padding.
             * @param paddingRight right padding.
             * @param paddingTop top padding.
             * @param paddingBottom bottom padding.
             */
            virtual void setPadding(unsigned int paddingLeft,
                                    unsigned int paddingRight,
                                    unsigned int paddingTop,
                                    unsigned int paddingBottom);
        
            /**
             * Set the spacing between rows.
             *
             * @param verticalSpacing spacing in pixels.
             */
            virtual void setVerticalSpacing(unsigned int verticalSpacing);
        
            /**
             * Set the horizontal spacing between columns.
             *
             * @param horizontalSpacing spacing in pixels.
             */
            virtual void setHorizontalSpacing(unsigned int horizontalSpacing);
        
            /**
             * Rearrange the widgets and resize the container.
             */
            virtual void adjustContent();


            // Inherited from Container

            virtual void logic();
        
            virtual void add(Widget *widget);

            virtual void add(Widget *widget, int x, int y);

            virtual void remove(Widget *widget);

            virtual void clear();
               
            /**
             * Possible alignment values for each column.
             *
             * LEFT   - Align content to the left of the column.
             * MIDDLE - Align content to the middle of the column.
             * RIGHT  - Align content to the right of the column.
             */
            enum
            {
                LEFT = 0,
                CENTER,
                RIGHT
            };

        protected:
        
            /**
             * Adjust the size of the container to fit all the widgets.
             */
            virtual void adjustSize();

            std::vector<Widget*> mContainedWidgets;
            std::vector<unsigned int> mColumnWidths;
            std::vector<unsigned int> mColumnAlignment;
            std::vector<unsigned int> mRowHeights;
            unsigned int mWidth;
            unsigned int mHeight;
            unsigned int mNumberOfColumns;
            unsigned int mNumberOfRows;
            unsigned int mPaddingLeft;
            unsigned int mPaddingRight;
            unsigned int mPaddingTop;
            unsigned int mPaddingBottom;
            unsigned int mVerticalSpacing;
            unsigned int mHorizontalSpacing;
        };
    }
}

#endif
