pager.php

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<?php
/***************************************************************************
 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 2
 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, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 ***************************************************************************/


class Pager
{
    var $intPage;       
    var $intMaxPage;    
    var $intItemLimit;  
    var $firstline;     
    var $lastline;      
    var $intTotal;      
    var $intMaxLink;    
    var $strUrl;        

  // var linktype       verschiedene Pager möglich machen
  // var linkdecoration     aussehen des einzelnen Links setzen

    function Pager ( $intCount, $intMax, $intMaxLinks, $strUrl )
    {
        $this->intPage = 1;
        $this->intTotal = $intCount;
        $this->strUrl = $strUrl;
        $this->intItemLimit = min( $intCount, $intMax );
        $this->intMaxLink = round ( $intMaxLinks / 2 );
        if( $this->intMaxLink < 5 )
        {
            $this->intMaxLink = 5;
        }
        $this->intMaxPage = ($this->intItemLimit > 0) ? round( ($this->intTotal/$this->intItemLimit) + 0.49, 0 ) : 0;
    }


  /* ---------------------------------------------------------------------------------
   * Methoden
   * ---------------------------------------------------------------------------------
   */
    function setcurrent( $intCurrent = -1 )
    {
        if ( $intCurrent == -1 )
        {
            $this->intPage = -1;
            $this->firstline = 0;
            $this->lastline = $this->intTotal;
        }
        else
        {
            $this->intPage = ( $this->intItemLimit > 0 ) ? round( ($intCurrent / $this->intItemLimit) + 0.5, 0 ) : 0;
            $this->firstline = $intCurrent;
            $this->lastline = $intCurrent + $this->intItemLimit;
        }
    }

    function pagelink ( $intPageNo )
    {
        // current page doesnt become a link
        if( $this->intPage == $intPageNo )
        {
            return ( ($intPageNo != -1) ? $intPageNo : 'alle' );
        }

        $strText = '<b><a href="'.$this->strUrl.'p_count='.$this->intItemLimit.'&amp;p_start=';

        $strText .= ( $intPageNo != -1 ) ? (($intPageNo-1) * $this->intItemLimit) . '">'.$intPageNo : '-1">alle';

        $strText .= '</a></b>';
        return( $strText );
    }


    function link()
    {
        if( $this->intMaxPage == 1 )
        {
            return( '' );
        }

        $strText = 'gehe zu Seite:&nbsp;';
        $strLinkbase = '';

/*
    // zurueck oder first link koennte auch noch angefuegt werden
    if( $this->page > 1 ) {
      $text .= "zurück";
    }
*/

        // @todo limit
        // set all links (should be limited later)
        for ( $intCount = 1; $intCount <= $this->intMaxPage; $intCount++ )
        {
            if( $intCount == 1 || $intCount == $this->intMaxPage || abs( $this->intPage - $intCount ) < $this->intMaxLink )
            {
                $strText .= '&nbsp;' . $this->pagelink( $intCount );
            }
            elseif (abs( $this->intPage - $intCount ) == $this->intMaxLink)
            {
                $strText .= '&nbsp;...&nbsp;';
            }
        }

        // weiter oder last link koennte auch noch angefuegt werden
        //....

        $strText .= '&nbsp;(' . $this->pagelink( -1 ).')';

        return( $strText );
    }

    function pagestring()
    {
        return ( $this->intPage == -1 ) ? 'Alle Datens&auml;tze' : 'Seite&nbsp;' . $this->intPage . '&nbsp;von&nbsp;' . $this->intMaxPage;
    }
}

---