<?php
App::import('Helper', 'Paginator');
class PagerHelper extends PaginatorHelper
{
 
 
    public function numbers($options = array())
    {
        if($options === true)
        {
            $options = array('before' => ' | ', 'after' => ' | ', 'first' => 'first', 'last' => 'last');
        }
 
        $defaults = array('tag' => 'span', 'before' => null, 'after' => null, 'model' => $this->defaultModel(), 'modulus' => '8', 'separator' => ' | ', 'first' => null, 'last' => null, 'no_page' => 'first');
        $options += $defaults;
 
        $params = (array) $this->params($options['model']) + array('page' => 1);
        unset($options['model']);
 
        if($params['pageCount'] <= 1)
        {
            return false;
        }
 
        extract($options);
        unset($options['tag'], $options['before'], $options['after'], $options['model'], $options['modulus'], $options['separator'], $options['first'], $options['last'], $options['no_page']);
        $out = '';
 
        if($modulus && $params['pageCount'] > $modulus)
        {
            $half = intval($modulus / 2);
            $end = $params['page'] + $half;
 
            if($end > $params['pageCount'])
            {
                $end = $params['pageCount'];
            }
            $start = $params['page'] - ($modulus - ($end - $params['page']));
            if($start <= 1)
            {
                $start = 1;
                $end = $params['page'] + ($modulus - $params['page']) + 1;
            }
 
            if($first && $start > 1)
            {
                $offset = ($start <= (int) $first) ? $start - 1 : $first;
                if($offset < $start - 1)
                {
                    $out .= $this->first($offset, array('tag' => $tag, 'separator' => $separator));
                }
                else
                {
                    $out .= $this->first($offset, array('tag' => $tag, 'after' => $separator, 'separator' => $separator));
                }
            }
 
            $out .= $before;
 
            for($i = $start; $i < $params['page']; $i++)
            {
                if(($no_page == 'first' and $i == 1)) $out .= $this->Html->tag($tag, $this->link($i, array('page' => null), $options)) . $separator;
                else $out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options)) . $separator;
            }
 
            $out .= $this->Html->tag($tag, $params['page'], array('class' => 'current'));
            if($i != $params['pageCount'])
            {
                $out .= $separator;
            }
 
            $start = $params['page'] + 1;
            for($i = $start; $i < $end; $i++)
            {
                $out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options)) . $separator;
            }
 
            if($end != $params['page'])
            {
                if($no_page == 'last') $out .= $this->Html->tag($tag, $this->link($i, array('page' => null), $options)) . $separator;
                else $out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options)) . $separator;
            }
 
            $out .= $after;
 
            if($last && $end < $params['pageCount'])
            {
                $offset = ($params['pageCount'] < $end + (int) $last) ? $params['pageCount'] - $end : $last;
                if($offset <= $last && $params['pageCount'] - $end > $offset)
                {
                    $out .= $this->last($offset, array('tag' => $tag, 'separator' => $separator, 'no_page' => $no_page));
                }
                else
                {
                    $out .= $this->last($offset, array('tag' => $tag, 'before' => $separator, 'separator' => $separator, 'no_page' => $no_page));
                }
            }
 
        }
        else
        {
            $out .= $before;
 
            for($i = 1; $i <= $params['pageCount']; $i++)
            {
                if($i == $params['page'])
                {
                    $out .= $this->Html->tag($tag, $i, array('class' => 'current'));
                }
                else
                {
                    if(($no_page == 'first' and $i == 1) or ($no_page == 'last' and $i == $params['pageCount']))
                    {
 
                        $out .= $this->Html->tag($tag, $this->link($i, array('page' => null), $options));
                    }
                    else
                    {
                        $out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options));
                    }
                }
                if($i != $params['pageCount'])
                {
                    $out .= $separator;
                }
            }
 
            $out .= $after;
        }
 
        return $out;
    }
 
 
    public function __pagingLink($which, $title = null, $options = array(), $disabledTitle = null, $disabledOptions = array())
    {
        $check = 'has' . $which;
        $_defaults = array('url' => array(), 'step' => 1, 'escape' => true, 'model' => null, 'tag' => 'span', 'class' => strtolower($which), 'no_page' => 'first');
        $options = array_merge($_defaults, (array) $options);
        $paging = $this->params($options['model']);
        if(empty($disabledOptions))
        {
            $disabledOptions = $options;
        }
 
        if(!$this->{$check}($options['model']) && (!empty($disabledTitle) || !empty($disabledOptions)))
        {
            if(!empty($disabledTitle) && $disabledTitle !== true)
            {
                $title = $disabledTitle;
            }
            $options = array_merge($_defaults, (array) $disabledOptions);
        }
        elseif(!$this->{$check}($options['model']))
        {
            return null;
        }
 
        foreach(array_keys($_defaults) as $key)
        {
            ${$key} = $options[$key];
            unset($options[$key]);
        }
        $url = array_merge(array('page' => $paging['page'] + ($which == 'Prev' ? $step * -1 : $step)), $url);
 
        if(($no_page == 'first' and $url['page'] == 1) or ($no_page == 'last' and $url['page'] == $paging['pageCount'])) $url['page'] = null;
 
        if($this->{$check}($model))
        {
            return $this->link($title, $url, array_merge($options, compact('escape', 'class')));
        }
        else
        {
            return $this->Html->tag($tag, $title, array_merge($options, compact('escape', 'class')));
        }
    }
 
 
    public function first($first = '<< first', $options = array())
    {
        $options = array_merge(array('tag' => 'span', 'after' => null, 'model' => $this->defaultModel(), 'separator' => ' | ', 'no_page' => 'first'), (array) $options);
 
        $params = array_merge(array('page' => 1), (array) $this->params($options['model']));
        unset($options['model']);
 
        if($params['pageCount'] <= 1)
        {
            return false;
        }
        extract($options);
        unset($options['tag'], $options['after'], $options['model'], $options['separator'], $options['no_page']);
 
        $out = '';
 
        if(is_int($first) && $params['page'] > $first)
        {
            if($after === null)
            {
                $after = '...';
            }
            for($i = 1; $i <= $first; $i++)
            {
                if($no_page == 'first' and $i == 1) $out .= $this->Html->tag($tag, $this->link($i, array('page' => null), $options));
                else $out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options));
 
                if($i != $first)
                {
                    $out .= $separator;
                }
            }
            $out .= $after;
        }
        elseif($params['page'] > 1)
        {
            $out = $this->Html->tag($tag, $this->link($first, array('page' => 1), $options)) . $after;
        }
        return $out;
    }
 
 
    public function last($last = 'last >>', $options = array())
    {
 
        $options = array_merge(array('tag' => 'span', 'before' => null, 'model' => $this->defaultModel(), 'separator' => ' | ', 'no_page' => 'first'), (array) $options);
 
        $params = array_merge(array('page' => 1), (array) $this->params($options['model']));
        unset($options['model']);
 
        if($params['pageCount'] <= 1)
        {
            return false;
        }
 
        extract($options);
        unset($options['tag'], $options['before'], $options['model'], $options['separator'], $options['no_page']);
 
        $out = '';
        $lower = $params['pageCount'] - $last + 1;
 
        if(is_int($last) && $params['page'] < $lower)
        {
            if($before === null)
            {
                $before = '...';
            }
            for($i = $lower; $i <= $params['pageCount']; $i++)
            {
                if($no_page == 'last' and $i == $lower) $out .= $this->Html->tag($tag, $this->link($i, array('page' => null), $options));
                else $out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options));
 
                if($i != $params['pageCount'])
                {
                    $out .= $separator;
                }
            }
            $out = $before . $out;
        }
        elseif($params['page'] < $params['pageCount'])
        {
            $out = $before . $this->Html->tag($tag, $this->link($last, array('page' => $params['pageCount']), $options));
        }
        return $out;
    }
}
?>

echo $this->Pager->prev('« Anterior', array('class' => 'nextprev','no_page' => 'first'), '« Anterior', array('class' => 'nextprev', 'tag' => 'span'));
echo $this->Pager->numbers(array('separator' => '', 'modulus' => 5, 'no_page' => 'first', 'first' => 1, 'last' => 1));
echo $this->Pager->next('Siguiente »', array('class' => 'nextprev','no_page' => 'first'), 'Siguiente »', array('class' => 'nextprev', 'tag' => 'span'));