<?php
/**
* @version $Id: mospaging.php,v 1.6 2005/02/04 21:13:48 saka Exp $
* @package Mambo
* @copyright (C) 2000 - 2005 Miro International Pty Ltd
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* Mambo is Free Software
*/

/** ensure this file is being included by a parent file */
defined( '_VALID_MOS' ) or die( 'Direct Access to this location is not allowed.' );

$_MAMBOTS->registerFunction( 'onPrepareContent', 'botMosPaging' );

/**
* Page break mambot
*
* <b>Usage:</b>
* <code>{mospagebreak}</code>
* <code>{mospagebreak title=The page title}</code>
* or
* <code>{mospagebreak heading=The first page}</code>
* or
* <code>{mospagebreak title=The page title&heading=The first page}</code>
* or
* <code>{mospagebreak heading=The first page&title=The page title}</code>
*
*/
function botMosPaging( $published, &$row, &$params, $page=0 ) {
global $mainframe, $Itemid, $database;

 // expression to search for
 $regex = '/{(mospagebreak)\s*(.*?)}/i';

 if (!$published || $params->get( 'intro_only' )|| $params->get( 'popup' )) {
 $row->text = preg_replace( $regex, '', $row->text );
 return;
}

// find all instances of mambot and put in $matches
$matches = array();
preg_match_all( $regex, $row->text, $matches, PREG_SET_ORDER );

// split the text around the mambot
$text = preg_split( $regex, $row->text );

// count the number of pages
$n = count( $text );

// we have found at least one mambot, therefore at least 2 pages
if ($n > 1) {
 // load mambot params info
 $query = "SELECT id FROM #__mambots WHERE element = 'mospaging' AND folder = 'content'";
 $database->setQuery( $query );
  $id  = $database->loadResult();
  $mambot = new mosMambot( $database );
   $mambot->load( $id );
  $params =& new mosParameters( $mambot->params );

  $title = $params->def( 'title', 1 );

  // adds heading or title to <site> Title
  if ( $title ) {
  $page_text = $page + 1;
  $row->page_title = _PN_PAGE .' '. $page_text;
  if ( !$page ) {
   // processing for first page
   parse_str( $matches[0][2], $args );

   if ( @$args['heading'] ) {
    $row->page_title = $args['heading'];
   } else {
    $row->page_title = '';
   }
  } else if ( $matches[$page-1][2] ) {
   parse_str( $matches[$page-1][2], $args );

   if ( @$args['title'] ) {
    $row->page_title = $args['title'];
   }
  }
  }

 // reset the text, we already hold it in the $text array
 $row->text = '';

 $hasToc = $mainframe->getCfg( 'multipage_toc' );

 if ( $hasToc ) {
  // display TOC
  createTOC( $row, $matches, $page );
 } else {
  $row->toc = '';
 }

 // traditional mos page navigation
 require_once( $GLOBALS['mosConfig_absolute_path'] . '/includes/pageNavigation.php' );
 $pageNav = new mosPageNav( $n, $page, 1 );

 // page counter
 $row->text .= '<div class="pagenavcounter">';
 $row->text .= $pageNav->writeLeafsCounter();
 $row->text .= '</div>';

 // page text
 $row->text .= $text[$page];

 $row->text .= '<br />';
 $row->text .= '<div class="pagenavbar">';

 // adds navigation between pages to bottom of text
 if ( $hasToc ) {
  createNavigation( $row, $page, $n );
 }

 // page links shown at bottom of page if TOC disabled
 if (!$hasToc) {
  $row->text .= $pageNav->writePagesLinks( 'index.php?option=com_content&amp;task=view&amp;id='. $row->id .'&amp;Itemid='. $Itemid );
 }

 $row->text .= '</div><br />';
}

return true;
}

function createTOC( &$row, &$matches, &$page ) {
global $Itemid;

$nonseflink = 'index.php?option=com_content&amp;task=view&amp;id='. $row->id .'&amp;Itemid='. $Itemid;
$link = 'index.php?option=com_content&amp;task=view&amp;id='. $row->id .'&amp;Itemid='. $Itemid;
$link = sefRelToAbs( $link );

$heading = $row->title;
// allows customization of first page title by checking for `heading` attribute in first bot
if ( @$matches[0][2] ) {
 parse_str( $matches[0][2], $args );

 if ( @$args['heading'] ) {
  $heading = $args['heading'];
 }
}

// TOC Header
$row->toc = '
<table cellpadding="0" cellspacing="0" class="contenttoc" align="right">
<tr>
 <th>'
 . _TOC_JUMPTO .
 '</th>
</tr>
';

// TOC First Page link
$row->toc .= '
<tr>
 <td>
 <a href="'. $link .'" class="toclink">'
 . $heading .
 '</a>
 </td>
</tr>
';

$i = 2;
$args2 = array();

foreach ( $matches as $bot ) {
 $link = $nonseflink .'&amp;limit=1&amp;limitstart='. ($i-1);
 $link = sefRelToAbs( $link );

 if ( @$bot[2] ) {
  parse_str( str_replace( '&amp;', '&', $bot[2] ), $args2 );

  if ( @$args2['title'] ) {
   $row->toc .= '
   <tr>
    <td>
    <a href="'. $link .'" class="toclink">'
    . $args2['title'] .
    '</a>
    </td>
   </tr>
   ';
  } else {
   $row->toc .= '
   <tr>
    <td>
    <a href="'. $link .'" class="toclink">'
    . _PN_PAGE .' '. $i .
    '</a>
    </td>
   </tr>
   ';
  }
 } else {
  $row->toc .= '
  <tr>
   <td>
   <a href="'. $link .'" class="toclink">'
   . _PN_PAGE .' '. $i .
   '</a>
   </td>
  </tr>
  ';
 }
 $i++;
}

$row->toc .= '</table>';
}

function createNavigation( &$row, $page, $n ) {
global $Itemid;

$link = 'index.php?option=com_content&amp;task=view&amp;id='. $row->id .'&amp;Itemid='. $Itemid;

if ( $page < $n-1 ) {
 $link_next = $link .'&amp;limit=1&amp;limitstart='. ( $page + 1 );
 $link_next = sefRelToAbs( $link_next );

 $next = '<a href="'. $link_next .'" title="Next Page">' . '<img src="images/next.gif" border="0">' .'</a>';
} else {
 $next = '<img src="images/next_disabled.gif" border="0">';
}

if ( $page > 0 ) {
 $link_prev = $link .'&amp;limit=1&amp;limitstart='. ( $page - 1 );
 $link_prev = sefRelToAbs( $link_prev );

 $prev = '<a href="'. $link_prev .'" title="Previous Page">'. '<img src="images/previous.gif" border="0">' .'</a>';
} else {
 $prev = '<img src="images/previous_disabled.gif" border="0">';
}

$row->text .= '<table width=70% border="0" cellspacing="0" cellpadding="0" bgcolor="#ffffff"><tr height="50" valign="middle"><td width=40; align=right>' . $prev . '</td><td align="center">Page Navigation</td><td width=40; align=left>' . $next .'</td></tr></table>';
}
?>