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<?php

/**

 * Pagination Helper class file.

 *

 * Generates pagination links

 *

 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)

 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 *

 * Licensed under The MIT License

 * For full copyright and license information, please see the LICENSE.txt

 * Redistributions of files must retain the above copyright notice.

 *

 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)

 * @link          http://cakephp.org CakePHP(tm) Project

 * @package       Cake.View.Helper

 * @since         CakePHP(tm) v 1.2.0

 * @license       http://www.opensource.org/licenses/mit-license.php MIT License

 */

App::uses('AppHelper', 'View/Helper');

/**

 * Pagination Helper class for easy generation of pagination links.

 *

 * PaginationHelper encloses all methods needed when working with pagination.

 *

 * @package       Cake.View.Helper

 * @property      HtmlHelper $Html

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html

 */

class PaginatorHelper extends AppHelper {

/**

 * Helper dependencies

 *

 * @var array

 */

	public $helpers = array('Html');

/**

 * The class used for 'Ajax' pagination links. Defaults to JsHelper. You should make sure

 * that JsHelper is defined as a helper before PaginatorHelper, if you want to customize the JsHelper.

 *

 * @var string

 */

	protected $_ajaxHelperClass = 'Js';

/**

 * Holds the default options for pagination links

 *

 * The values that may be specified are:

 *

 * - `format` Format of the counter. Supported formats are 'range' and 'pages'

 *    and custom (default). In the default mode the supplied string is parsed and constants are replaced

 *    by their actual values.

 *    placeholders: %page%, %pages%, %current%, %count%, %start%, %end% .

 * - `separator` The separator of the actual page and number of pages (default: ' of ').

 * - `url` Url of the action. See Router::url()

 * - `url['sort']`  the key that the recordset is sorted.

 * - `url['direction']` Direction of the sorting (default: 'asc').

 * - `url['page']` Page number to use in links.

 * - `model` The name of the model.

 * - `escape` Defines if the title field for the link should be escaped (default: true).

 * - `update` DOM id of the element updated with the results of the AJAX call.

 *     If this key isn't specified Paginator will use plain HTML links.

 * - `paging['paramType']` The type of parameters to use when creating links. Valid options are

 *     'querystring' and 'named'. See PaginatorComponent::$settings for more information.

 * - `convertKeys` - A list of keys in URL arrays that should be converted to querysting params

 *    if paramType == 'querystring'.

 *

 * @var array

 */

	public $options = array(

		'convertKeys' => array('page', 'limit', 'sort', 'direction')

	);

/**

 * Constructor for the helper. Sets up the helper that is used for creating 'AJAX' links.

 *

 * Use `public $helpers = array('Paginator' => array('ajax' => 'CustomHelper'));` to set a custom Helper

 * or choose a non JsHelper Helper. If you want to use a specific library with JsHelper declare JsHelper and its

 * adapter before including PaginatorHelper in your helpers array.

 *

 * The chosen custom helper must implement a `link()` method.

 *

 * @param View $View the view object the helper is attached to.

 * @param array $settings Array of settings.

 * @throws CakeException When the AjaxProvider helper does not implement a link method.

 */

	public function __construct(View $View, $settings = array()) {

		$ajaxProvider = isset($settings['ajax']) ? $settings['ajax'] : 'Js';

		$this->helpers[] = $ajaxProvider;

		$this->_ajaxHelperClass = $ajaxProvider;

		App::uses($ajaxProvider . 'Helper', 'View/Helper');

		$classname = $ajaxProvider . 'Helper';

		if (!class_exists($classname) || !method_exists($classname, 'link')) {

			throw new CakeException(

				__d('cake_dev', '%s does not implement a %s method, it is incompatible with %s', $classname, 'link()', 'PaginatorHelper')

			);

		}

		parent::__construct($View, $settings);

	}

/**

 * Before render callback. Overridden to merge passed args with URL options.

 *

 * @param string $viewFile

 * @return void

 */

	public function beforeRender($viewFile) {

		$this->options['url'] = array_merge($this->request->params['pass'], $this->request->params['named']);

		if (!empty($this->request->query)) {

			$this->options['url']['?'] = $this->request->query;

		}

		parent::beforeRender($viewFile);

	}

/**

 * Gets the current paging parameters from the resultset for the given model

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @return array The array of paging parameters for the paginated resultset.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::params

 */

	public function params($model = null) {

		if (empty($model)) {

			$model = $this->defaultModel();

		}

		if (!isset($this->request->params['paging']) || empty($this->request->params['paging'][$model])) {

			return null;

		}

		return $this->request->params['paging'][$model];

	}

/**

 * Convenience access to any of the paginator params.

 *

 * @param string $key Key of the paginator params array to retrieve.

 * @param string $model Optional model name. Uses the default if none is specified.

 * @return mixed Content of the requested param.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::params

 */

	public function param($key, $model = null) {

		$params = $this->params($model);

		if (!isset($params[$key])) {

			return null;

		}

		return $params[$key];

	}

/**

 * Sets default options for all pagination links

 *

 * @param array|string $options Default options for pagination links. If a string is supplied - it

 *   is used as the DOM id element to update. See PaginatorHelper::$options for list of keys.

 * @return void

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::options

 */

	public function options($options = array()) {

		if (is_string($options)) {

			$options = array('update' => $options);

		}

		if (!empty($options['paging'])) {

			if (!isset($this->request->params['paging'])) {

				$this->request->params['paging'] = array();

			}

			$this->request->params['paging'] = array_merge($this->request->params['paging'], $options['paging']);

			unset($options['paging']);

		}

		$model = $this->defaultModel();

		if (!empty($options[$model])) {

			if (!isset($this->request->params['paging'][$model])) {

				$this->request->params['paging'][$model] = array();

			}

			$this->request->params['paging'][$model] = array_merge(

				$this->request->params['paging'][$model], $options[$model]

			);

			unset($options[$model]);

		}

		if (!empty($options['convertKeys'])) {

			$options['convertKeys'] = array_merge($this->options['convertKeys'], $options['convertKeys']);

		}

		$this->options = array_filter(array_merge($this->options, $options));

	}

/**

 * Gets the current page of the recordset for the given model

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @return string The current page number of the recordset.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::current

 */

	public function current($model = null) {

		$params = $this->params($model);

		if (isset($params['page'])) {

			return $params['page'];

		}

		return 1;

	}

/**

 * Gets the current key by which the recordset is sorted

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @param array $options Options for pagination links. See #options for list of keys.

 * @return string The name of the key by which the recordset is being sorted, or

 *  null if the results are not currently sorted.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::sortKey

 */

	public function sortKey($model = null, $options = array()) {

		if (empty($options)) {

			$params = $this->params($model);

			$options = $params['options'];

		}

		if (isset($options['sort']) && !empty($options['sort'])) {

			return $options['sort'];

		}

		if (isset($options['order'])) {

			return is_array($options['order']) ? key($options['order']) : $options['order'];

		}

		if (isset($params['order'])) {

			return is_array($params['order']) ? key($params['order']) : $params['order'];

		}

		return null;

	}

/**

 * Gets the current direction the recordset is sorted

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @param array $options Options for pagination links. See #options for list of keys.

 * @return string The direction by which the recordset is being sorted, or

 *  null if the results are not currently sorted.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::sortDir

 */

	public function sortDir($model = null, $options = array()) {

		$dir = null;

		if (empty($options)) {

			$params = $this->params($model);

			$options = $params['options'];

		}

		if (isset($options['direction'])) {

			$dir = strtolower($options['direction']);

		} elseif (isset($options['order']) && is_array($options['order'])) {

			$dir = strtolower(current($options['order']));

		} elseif (isset($params['order']) && is_array($params['order'])) {

			$dir = strtolower(current($params['order']));

		}

		if ($dir === 'desc') {

			return 'desc';

		}

		return 'asc';

	}

/**

 * Generates a "previous" link for a set of paged records

 *

 * ### Options:

 *

 * - `tag` The tag wrapping tag you want to use, defaults to 'span'. Set this to false to disable this option

 * - `escape` Whether you want the contents html entity encoded, defaults to true

 * - `model` The model to use, defaults to PaginatorHelper::defaultModel()

 * - `disabledTag` Tag to use instead of A tag when there is no previous page

 *

 * @param string $title Title for the link. Defaults to '<< Previous'.

 * @param array $options Options for pagination link. See #options for list of keys.

 * @param string $disabledTitle Title when the link is disabled.

 * @param array $disabledOptions Options for the disabled pagination link. See #options for list of keys.

 * @return string A "previous" link or $disabledTitle text if the link is disabled.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::prev

 */

	public function prev($title = '<< Previous', $options = array(), $disabledTitle = null, $disabledOptions = array()) {

		$defaults = array(

			'rel' => 'prev'

		);

		$options = array_merge($defaults, (array)$options);

		return $this->_pagingLink('Prev', $title, $options, $disabledTitle, $disabledOptions);

	}

/**

 * Generates a "next" link for a set of paged records

 *

 * ### Options:

 *

 * - `tag` The tag wrapping tag you want to use, defaults to 'span'. Set this to false to disable this option

 * - `escape` Whether you want the contents html entity encoded, defaults to true

 * - `model` The model to use, defaults to PaginatorHelper::defaultModel()

 * - `disabledTag` Tag to use instead of A tag when there is no next page

 *

 * @param string $title Title for the link. Defaults to 'Next >>'.

 * @param array $options Options for pagination link. See above for list of keys.

 * @param string $disabledTitle Title when the link is disabled.

 * @param array $disabledOptions Options for the disabled pagination link. See above for list of keys.

 * @return string A "next" link or $disabledTitle text if the link is disabled.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::next

 */

	public function next($title = 'Next >>', $options = array(), $disabledTitle = null, $disabledOptions = array()) {

		$defaults = array(

			'rel' => 'next'

		);

		$options = array_merge($defaults, (array)$options);

		return $this->_pagingLink('Next', $title, $options, $disabledTitle, $disabledOptions);

	}

/**

 * Generates a sorting link. Sets named parameters for the sort and direction. Handles

 * direction switching automatically.

 *

 * ### Options:

 *

 * - `escape` Whether you want the contents html entity encoded, defaults to true

 * - `model` The model to use, defaults to PaginatorHelper::defaultModel()

 * - `direction` The default direction to use when this link isn't active.

 *

 * @param string $key The name of the key that the recordset should be sorted.

 * @param string $title Title for the link. If $title is null $key will be used

 *		for the title and will be generated by inflection.

 * @param array $options Options for sorting link. See above for list of keys.

 * @return string A link sorting default by 'asc'. If the resultset is sorted 'asc' by the specified

 *  key the returned link will sort by 'desc'.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::sort

 */

	public function sort($key, $title = null, $options = array()) {

		$options = array_merge(array('url' => array(), 'model' => null), $options);

		$url = $options['url'];

		unset($options['url']);

		if (empty($title)) {

			$title = $key;

			if (strpos($title, '.') !== false) {

				$title = str_replace('.', ' ', $title);

			}

			$title = __(Inflector::humanize(preg_replace('/_id$/', '', $title)));

		}

		$dir = isset($options['direction']) ? $options['direction'] : 'asc';

		unset($options['direction']);

		$sortKey = $this->sortKey($options['model']);

		$defaultModel = $this->defaultModel();

		$isSorted = (

			$sortKey === $key ||

			$sortKey === $defaultModel . '.' . $key ||

			$key === $defaultModel . '.' . $sortKey

		);

		if ($isSorted) {

			$dir = $this->sortDir($options['model']) === 'asc' ? 'desc' : 'asc';

			$class = $dir === 'asc' ? 'desc' : 'asc';

			if (!empty($options['class'])) {

				$options['class'] .= ' ' . $class;

			} else {

				$options['class'] = $class;

			}

		}

		if (is_array($title) && array_key_exists($dir, $title)) {

			$title = $title[$dir];

		}

		$url = array_merge(array('sort' => $key, 'direction' => $dir), $url, array('order' => null));

		return $this->link($title, $url, $options);

	}

/**

 * Generates a plain or Ajax link with pagination parameters

 *

 * ### Options

 *

 * - `update` The Id of the DOM element you wish to update. Creates Ajax enabled links

 *    with the AjaxHelper.

 * - `escape` Whether you want the contents html entity encoded, defaults to true

 * - `model` The model to use, defaults to PaginatorHelper::defaultModel()

 *

 * @param string $title Title for the link.

 * @param string|array $url URL for the action. See Router::url()

 * @param array $options Options for the link. See #options for list of keys.

 * @return string A link with pagination parameters.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::link

 */

	public function link($title, $url = array(), $options = array()) {

		$options = array_merge(array('model' => null, 'escape' => true), $options);

		$model = $options['model'];

		unset($options['model']);

		if (!empty($this->options)) {

			$options = array_merge($this->options, $options);

		}

		if (isset($options['url'])) {

			$url = array_merge((array)$options['url'], (array)$url);

			unset($options['url']);

		}

		unset($options['convertKeys']);

		$url = $this->url($url, true, $model);

		$obj = isset($options['update']) ? $this->_ajaxHelperClass : 'Html';

		return $this->{$obj}->link($title, $url, $options);

	}

/**

 * Merges passed URL options with current pagination state to generate a pagination URL.

 *

 * @param array $options Pagination/URL options array

 * @param boolean $asArray Return the URL as an array, or a URI string

 * @param string $model Which model to paginate on

 * @return mixed By default, returns a full pagination URL string for use in non-standard contexts (i.e. JavaScript)

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::url

 */

	public function url($options = array(), $asArray = false, $model = null) {

		$paging = $this->params($model);

		$url = array_merge(array_filter($paging['options']), $options);

		if (isset($url['order'])) {

			$sort = $direction = null;

			if (is_array($url['order'])) {

				list($sort, $direction) = array($this->sortKey($model, $url), current($url['order']));

			}

			unset($url['order']);

			$url = array_merge($url, compact('sort', 'direction'));

		}

		$url = $this->_convertUrlKeys($url, $paging['paramType']);

		if (!empty($url['page']) && $url['page'] == 1) {

			$url['page'] = null;

		}

		if (!empty($url['?']['page']) && $url['?']['page'] == 1) {

			unset($url['?']['page']);

		}

		if ($asArray) {

			return $url;

		}

		return parent::url($url);

	}

/**

 * Converts the keys being used into the format set by options.paramType

 *

 * @param array $url Array of URL params to convert

 * @param string $type

 * @return array converted URL params.

 */

	protected function _convertUrlKeys($url, $type) {

		if ($type === 'named') {

			return $url;

		}

		if (!isset($url['?'])) {

			$url['?'] = array();

		}

		foreach ($this->options['convertKeys'] as $key) {

			if (isset($url[$key])) {

				$url['?'][$key] = $url[$key];

				unset($url[$key]);

			}

		}

		return $url;

	}

/**

 * Protected method for generating prev/next links

 *

 * @param string $which

 * @param string $title

 * @param array $options

 * @param string $disabledTitle

 * @param array $disabledOptions

 * @return string

 */

	protected 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), 'disabledTag' => null

		);

		$options = array_merge($_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]);

		}

		if ($this->{$check}($model)) {

			$url = array_merge(

				array('page' => $paging['page'] + ($which === 'Prev' ? $step * -1 : $step)),

				$url

			);

			if ($tag === false) {

				return $this->link(

					$title,

					$url,

					compact('escape', 'model', 'class') + $options

				);

			}

			$link = $this->link($title, $url, compact('escape', 'model') + $options);

			return $this->Html->tag($tag, $link, compact('class'));

		}

		unset($options['rel']);

		if (!$tag) {

			if ($disabledTag) {

				$tag = $disabledTag;

				$disabledTag = null;

			} else {

				$tag = $_defaults['tag'];

			}

		}

		if ($disabledTag) {

			$title = $this->Html->tag($disabledTag, $title, compact('escape') + $options);

			return $this->Html->tag($tag, $title, compact('class'));

		}

		return $this->Html->tag($tag, $title, compact('escape', 'class') + $options);

	}

/**

 * Returns true if the given result set is not at the first page

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @return boolean True if the result set is not at the first page.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::hasPrev

 */

	public function hasPrev($model = null) {

		return $this->_hasPage($model, 'prev');

	}

/**

 * Returns true if the given result set is not at the last page

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @return boolean True if the result set is not at the last page.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::hasNext

 */

	public function hasNext($model = null) {

		return $this->_hasPage($model, 'next');

	}

/**

 * Returns true if the given result set has the page number given by $page

 *

 * @param string $model Optional model name. Uses the default if none is specified.

 * @param integer $page The page number - if not set defaults to 1.

 * @return boolean True if the given result set has the specified page number.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::hasPage

 */

	public function hasPage($model = null, $page = 1) {

		if (is_numeric($model)) {

			$page = $model;

			$model = null;

		}

		$paging = $this->params($model);

		return $page <= $paging['pageCount'];

	}

/**

 * Does $model have $page in its range?

 *

 * @param string $model Model name to get parameters for.

 * @param integer $page Page number you are checking.

 * @return boolean Whether model has $page

 */

	protected function _hasPage($model, $page) {

		$params = $this->params($model);

		return !empty($params) && $params[$page . 'Page'];

	}

/**

 * Gets the default model of the paged sets

 *

 * @return string Model name or null if the pagination isn't initialized.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::defaultModel

 */

	public function defaultModel() {

		if ($this->_defaultModel) {

			return $this->_defaultModel;

		}

		if (empty($this->request->params['paging'])) {

			return null;

		}

		list($this->_defaultModel) = array_keys($this->request->params['paging']);

		return $this->_defaultModel;

	}

/**

 * Returns a counter string for the paged result set

 *

 * ### Options

 *

 * - `model` The model to use, defaults to PaginatorHelper::defaultModel();

 * - `format` The format string you want to use, defaults to 'pages' Which generates output like '1 of 5'

 *    set to 'range' to generate output like '1 - 3 of 13'. Can also be set to a custom string, containing

 *    the following placeholders `{:page}`, `{:pages}`, `{:current}`, `{:count}`, `{:model}`, `{:start}`, `{:end}` and any

 *    custom content you would like.

 * - `separator` The separator string to use, default to ' of '

 *

 * The `%page%` style placeholders also work, but are deprecated and will be removed in a future version.

 * @param array $options Options for the counter string. See #options for list of keys.

 * @return string Counter string.

 * @deprecated The %page% style placeholders are deprecated.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::counter

 */

	public function counter($options = array()) {

		if (is_string($options)) {

			$options = array('format' => $options);

		}

		$options = array_merge(

			array(

				'model' => $this->defaultModel(),

				'format' => 'pages',

				'separator' => __d('cake', ' of ')

			),

		$options);

		$paging = $this->params($options['model']);

		if (!$paging['pageCount']) {

			$paging['pageCount'] = 1;

		}

		$start = 0;

		if ($paging['count'] >= 1) {

			$start = (($paging['page'] - 1) * $paging['limit']) + 1;

		}

		$end = $start + $paging['limit'] - 1;

		if ($paging['count'] < $end) {

			$end = $paging['count'];

		}

		switch ($options['format']) {

			case 'range':

				if (!is_array($options['separator'])) {

					$options['separator'] = array(' - ', $options['separator']);

				}

				$out = $start . $options['separator'][0] . $end . $options['separator'][1];

				$out .= $paging['count'];

				break;

			case 'pages':

				$out = $paging['page'] . $options['separator'] . $paging['pageCount'];

				break;

			default:

				$map = array(

					'%page%' => $paging['page'],

					'%pages%' => $paging['pageCount'],

					'%current%' => $paging['current'],

					'%count%' => $paging['count'],

					'%start%' => $start,

					'%end%' => $end,

					'%model%' => strtolower(Inflector::humanize(Inflector::tableize($options['model'])))

				);

				$out = str_replace(array_keys($map), array_values($map), $options['format']);

				$newKeys = array(

					'{:page}', '{:pages}', '{:current}', '{:count}', '{:start}', '{:end}', '{:model}'

				);

				$out = str_replace($newKeys, array_values($map), $out);

		}

		return $out;

	}

/**

 * Returns a set of numbers for the paged result set

 * uses a modulus to decide how many numbers to show on each side of the current page (default: 8).

 *

 * `$this->Paginator->numbers(array('first' => 2, 'last' => 2));`

 *

 * Using the first and last options you can create links to the beginning and end of the page set.

 *

 * ### Options

 *

 * - `before` Content to be inserted before the numbers

 * - `after` Content to be inserted after the numbers

 * - `model` Model to create numbers for, defaults to PaginatorHelper::defaultModel()

 * - `modulus` how many numbers to include on either side of the current page, defaults to 8.

 * - `separator` Separator content defaults to ' | '

 * - `tag` The tag to wrap links in, defaults to 'span'

 * - `first` Whether you want first links generated, set to an integer to define the number of 'first'

 *    links to generate.

 * - `last` Whether you want last links generated, set to an integer to define the number of 'last'

 *    links to generate.

 * - `ellipsis` Ellipsis content, defaults to '...'

 * - `class` Class for wrapper tag

 * - `currentClass` Class for wrapper tag on current active page, defaults to 'current'

 * - `currentTag` Tag to use for current page number, defaults to null

 *

 * @param array $options Options for the numbers, (before, after, model, modulus, separator)

 * @return string numbers string.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::numbers

 */

	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(), 'class' => null,

			'modulus' => '8', 'separator' => ' | ', 'first' => null, 'last' => null, 'ellipsis' => '...',

			'currentClass' => 'current', 'currentTag' => null

		);

		$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['ellipsis'], $options['class'], $options['currentClass'], $options['currentTag']

		);

		$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, compact('tag', 'separator', 'ellipsis', 'class'));

				} else {

					$out .= $this->first($offset, compact('tag', 'separator', 'class', 'ellipsis') + array('after' => $separator));

				}

			}

			$out .= $before;

			for ($i = $start; $i < $params['page']; $i++) {

				$out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options), compact('class')) . $separator;

			}

			if ($class) {

				$currentClass .= ' ' . $class;

			}

			if ($currentTag) {

				$out .= $this->Html->tag($tag, $this->Html->tag($currentTag, $params['page']), array('class' => $currentClass));

			} else {

				$out .= $this->Html->tag($tag, $params['page'], array('class' => $currentClass));

			}

			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), compact('class')) . $separator;

			}

			if ($end != $params['page']) {

				$out .= $this->Html->tag($tag, $this->link($i, array('page' => $end), $options), compact('class'));

			}

			$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, compact('tag', 'separator', 'ellipsis', 'class'));

				} else {

					$out .= $this->last($offset, compact('tag', 'separator', 'class', 'ellipsis') + array('before' => $separator));

				}

			}

		} else {

			$out .= $before;

			for ($i = 1; $i <= $params['pageCount']; $i++) {

				if ($i == $params['page']) {

					if ($class) {

						$currentClass .= ' ' . $class;

					}

					if ($currentTag) {

						$out .= $this->Html->tag($tag, $this->Html->tag($currentTag, $i), array('class' => $currentClass));

					} else {

						$out .= $this->Html->tag($tag, $i, array('class' => $currentClass));

					}

				} else {

					$out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options), compact('class'));

				}

				if ($i != $params['pageCount']) {

					$out .= $separator;

				}

			}

			$out .= $after;

		}

		return $out;

	}

/**

 * Returns a first or set of numbers for the first pages.

 *

 * `echo $this->Paginator->first('< first');`

 *

 * Creates a single link for the first page. Will output nothing if you are on the first page.

 *

 * `echo $this->Paginator->first(3);`

 *

 * Will create links for the first 3 pages, once you get to the third or greater page. Prior to that

 * nothing will be output.

 *

 * ### Options:

 *

 * - `tag` The tag wrapping tag you want to use, defaults to 'span'

 * - `after` Content to insert after the link/tag

 * - `model` The model to use defaults to PaginatorHelper::defaultModel()

 * - `separator` Content between the generated links, defaults to ' | '

 * - `ellipsis` Content for ellipsis, defaults to '...'

 *

 * @param string|integer $first if string use as label for the link. If numeric, the number of page links

 *   you want at the beginning of the range.

 * @param array $options An array of options.

 * @return string numbers string.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::first

 */

	public function first($first = '<< first', $options = array()) {

		$options = array_merge(

			array(

				'tag' => 'span',

				'after' => null,

				'model' => $this->defaultModel(),

				'separator' => ' | ',

				'ellipsis' => '...',

				'class' => null

			),

		(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['ellipsis'], $options['class']);

		$out = '';

		if (is_int($first) && $params['page'] >= $first) {

			if ($after === null) {

				$after = $ellipsis;

			}

			for ($i = 1; $i <= $first; $i++) {

				$out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options), compact('class'));

				if ($i != $first) {

					$out .= $separator;

				}

			}

			$out .= $after;

		} elseif ($params['page'] > 1 && is_string($first)) {

			$options += array('rel' => 'first');

			$out = $this->Html->tag($tag, $this->link($first, array('page' => 1), $options), compact('class')) . $after;

		}

		return $out;

	}

/**

 * Returns a last or set of numbers for the last pages.

 *

 * `echo $this->Paginator->last('last >');`

 *

 * Creates a single link for the last page. Will output nothing if you are on the last page.

 *

 * `echo $this->Paginator->last(3);`

 *

 * Will create links for the last 3 pages. Once you enter the page range, no output will be created.

 *

 * ### Options:

 *

 * - `tag` The tag wrapping tag you want to use, defaults to 'span'

 * - `before` Content to insert before the link/tag

 * - `model` The model to use defaults to PaginatorHelper::defaultModel()

 * - `separator` Content between the generated links, defaults to ' | '

 * - `ellipsis` Content for ellipsis, defaults to '...'

 *

 * @param string|integer $last if string use as label for the link, if numeric print page numbers

 * @param array $options Array of options

 * @return string numbers string.

 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/paginator.html#PaginatorHelper::last

 */

	public function last($last = 'last >>', $options = array()) {

		$options = array_merge(

			array(

				'tag' => 'span',

				'before' => null,

				'model' => $this->defaultModel(),

				'separator' => ' | ',

				'ellipsis' => '...',

				'class' => null

			),

		(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['ellipsis'], $options['class']);

		$out = '';

		$lower = $params['pageCount'] - $last + 1;

		if (is_int($last) && $params['page'] <= $lower) {

			if ($before === null) {

				$before = $ellipsis;

			}

			for ($i = $lower; $i <= $params['pageCount']; $i++) {

				$out .= $this->Html->tag($tag, $this->link($i, array('page' => $i), $options), compact('class'));

				if ($i != $params['pageCount']) {

					$out .= $separator;

				}

			}

			$out = $before . $out;

		} elseif ($params['page'] < $params['pageCount'] && is_string($last)) {

			$options += array('rel' => 'last');

			$out = $before . $this->Html->tag(

				$tag, $this->link($last, array('page' => $params['pageCount']), $options), compact('class')

			);

		}

		return $out;

	}

}