/*
 * Dillo Widget
 *
 * Copyright 2005-2007 Sebastian Geerken <sgeerken@dillo.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */



#include "alignedtextblock.hh"
#include <stdio.h>

namespace dw {

AlignedTextblock::List::List ()
{
   textblocks = new lout::misc::SimpleVector <AlignedTextblock*> (4);
   values = new lout::misc::SimpleVector <int> (4);
   maxValue = 0;
   refCount = 0;
}

AlignedTextblock::List::~List ()
{
   delete textblocks;
   delete values;
}

int AlignedTextblock::List::add(AlignedTextblock *textblock)
{
   textblocks->increase ();
   values->increase ();
   textblocks->set (textblocks->size () - 1, textblock);
   refCount++;
   return textblocks->size () - 1;
}

void AlignedTextblock::List::unref(int pos)
{
   assert (textblocks->get (pos) != NULL);
   textblocks->set (pos, NULL);
   refCount--;

   if (refCount == 0)
      delete this;
}

int AlignedTextblock::CLASS_ID = -1;

AlignedTextblock::AlignedTextblock (bool limitTextWidth):
   Textblock (limitTextWidth)
{
   registerName ("dw::AlignedTextblock", &CLASS_ID);
}

void AlignedTextblock::setRefTextblock (AlignedTextblock *ref)
{
   if (ref == NULL)
      list = new List();
   else
      list = ref->list;

   listPos = list->add (this);
   updateValue ();
}

AlignedTextblock::~AlignedTextblock()
{
   list->unref (listPos);
}

void AlignedTextblock::updateValue ()
{
   if (list) {
      list->setValue (listPos, getValue ());

      if (list->getValue (listPos) > list->getMaxValue ()) {
         // New value greater than current maximum -> apply it to others.
         list->setMaxValue (list->getValue (listPos));

         for (int i = 0; i < list->size (); i++)
            if (list->getTextblock (i))
               list->getTextblock (i)->setMaxValue (list->getMaxValue (),
                                                    list->getValue (i));
      } else {
         /* No change, apply old max_value only to this page. */
         setMaxValue (list->getMaxValue (), list->getValue (listPos));
      }
   }
}

} // namespace dw
