paginator.php

来自「Cake Framwork , Excellent」· PHP 代码 · 共 622 行 · 第 1/2 页

			return $this->link($title, $url, array_merge($options, array('escape' => $escape)));
		} else {
			return $this->Html->tag($tag, $title, $options, $escape);
		}
	}
/**
 * Returns true if the given result set is not at the first page
 *
 * @param string $model Optional model name.  Uses the default if none is specified.
 * @return boolean True if the result set is not at the first page.
 */
	function hasPrev($model = null) {
		return $this->__hasPage($model, 'prev');
	}
/**
 * Returns true if the given result set is not at the last page
 *
 * @param string $model Optional model name.  Uses the default if none is specified.
 * @return boolean True if the result set is not at the last page.
 */
	function hasNext($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  int $page The page number - if not set defaults to 1.
 * @return boolean True if the given result set has the specified page number.
 */
	function hasPage($model = null, $page = 1) {
		if (is_numeric($model)) {
			$page = $model;
			$model = null;
		}
		$paging = $this->params($model);
		return $page <= $paging['pageCount'];
	}
/**
 * Protected method
 *
 */
	function __hasPage($model, $page) {
		$params = $this->params($model);
		if (!empty($params)) {
			if ($params["{$page}Page"] == true) {
				return true;
			}
		}
		return false;
	}
/**
 * Gets the default model of the paged sets
 *
 * @return string Model name or null if the pagination isn't initialized.
 */
	function defaultModel() {
		if ($this->__defaultModel != null) {
			return $this->__defaultModel;
		}
		if (empty($this->params['paging'])) {
			return null;
		}
		list($this->__defaultModel) = array_keys($this->params['paging']);
		return $this->__defaultModel;
	}
/**
 * Returns a counter string for the paged result set
 *
 * @param  mixed $options Options for the counter string. See #options for list of keys.
 * @return string Counter string.
 */
	function counter($options = array()) {
		if (is_string($options)) {
			$options = array('format' => $options);
		}

		$options = array_merge(
			array(
				'model' => $this->defaultModel(),
				'format' => 'pages',
				'separator' => ' of '
			),
		$options);

		$paging = $this->params($options['model']);
		$paging['pageCount'] = ife($paging['pageCount'] == 0, 1, $paging['pageCount']);

		$start = ife($paging['count'] >= 1, ($paging['page'] - 1) * ($paging['options']['limit']) + 1, '0');
		$end = ife(($paging['count'] < ($start + $paging['options']['limit'] - 1)), $paging['count'], ($start + $paging['options']['limit'] - 1));

		switch ($options['format']) {
			case 'range':
				if (!is_array($options['separator'])) {
					$options['separator'] = array(' - ', $options['separator']);
				}
				$out = $start . $options['separator'][0] . $end . $options['separator'][1] . $paging['count'];
			break;
			case 'pages':
				$out = $paging['page'] . $options['separator'] . $paging['pageCount'];
			break;
			default:
				$replace = array(
					'%page%' => $paging['page'],
					'%pages%' => $paging['pageCount'],
					'%current%' => $paging['current'],
					'%count%' => $paging['count'],
					'%start%' => $start,
					'%end%' => $end
				);
				$out = str_replace(array_keys($replace), array_values($replace), $options['format']);
			break;
		}
		return $this->output($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)
 *
 * @param  mixed $options Options for the numbers, (before, after, model, modulus, separator)
 * @return string numbers string.
 */
	function numbers($options = array()) {
		if ($options === true) {
			$options = array(
						'before' => ' | ', 'after' => ' | ',
						'first' => 'first', 'last' => 'last',
						);
		}

		$options = array_merge(
			array(
				'before'=> null, 'after'=> null,
				'model' => $this->defaultModel(),
				'modulus' => '8', 'separator' => ' | ',
				'first' => null, 'last' => null,
			),
		(array)$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['before'], $options['after'], $options['model'], $options['modulus'], $options['separator'], $options['first'], $options['last']);

		$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 && $start > (int)$first) {
				if ($start == $first + 1) {
					$out .= $this->first($first, array('after' => $separator));
				} else {
					$out .= $this->first($first);
				}
			}

			$out .= $before;

			for ($i = $start; $i < $params['page']; $i++) {
				$out .= '<span>' . $this->link($i, array('page' => $i), $options) . '</span>' . $separator;
			}

			$out .= '<span class="current">' . $params['page'] . '</span>';
			if ($i != $params['pageCount']) {
				$out .= $separator;
			}

			$start = $params['page'] + 1;
			for ($i = $start; $i < $end; $i++) {
				$out .= '<span>' .$this->link($i, array('page' => $i), $options) . '</span>'. $separator;
			}

			if ($end != $params['page']) {
				$out .= '<span>' .$this->link($i, array('page' => $end), $options) . '</span>';
			}

			$out .= $after;

			if ($last && $end <= $params['pageCount'] - (int)$last) {
				if ($end + 1 == $params['pageCount']) {
					$out .= $this->last($last, array('before' => $separator));
				} else {
					$out .= $this->last($last);
				}
			}

		} else {
			$out .= $before;

			for ($i = 1; $i <= $params['pageCount']; $i++) {
				if ($i == $params['page']) {
					$out .= '<span class="current">' . $i . '</span>';
				} else {
					$out .= '<span>' .$this->link($i, array('page' => $i), $options) . '</span>';
				}
				if ($i != $params['pageCount']) {
					$out .= $separator;
				}
			}

			$out .= $after;
		}

		return $this->output($out);
	}
/**
 * Returns a first or set of numbers for the first pages
 *
 * @param  mixed $first if string use as label for the link, if numeric print page numbers
 * @param  mixed $options
 * @return string numbers string.
 */
	function first($first = '<< first', $options = array()) {
		$options = array_merge(
			array(
				'after'=> null,
				'model' => $this->defaultModel(),
				'separator' => ' | ',
			),
		(array)$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['after'], $options['model'], $options['separator']);

		$out = '';

		if (is_int($first) && $params['page'] > $first) {
			if ($after === null) {
				$after = '...';
			}
			for ($i = 1; $i <= $first; $i++) {
				$out .= '<span>' . $this->link($i, array('page' => $i), $options) . '</span>';
				if ($i != $first) {
					$out .= $separator;
				}
			}
			$out .= $after;
		} elseif ($params['page'] > 1) {
			$out = '<span>' . $this->link($first, array('page' => 1), $options) . '</span>' . $after;
		}
		return $out;
	}
/**
 * Returns a last or set of numbers for the last pages
 *
 * @param  mixed $last if string use as label for the link, if numeric print page numbers
 * @param  mixed $options
 * @return string numbers string.
 */
	function last($last = 'last >>', $options = array()) {
		$options = array_merge(
			array(
				'before'=> null,
				'model' => $this->defaultModel(),
				'separator' => ' | ',
			),
		(array)$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['before'], $options['model'], $options['separator']);

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

		if (is_int($last) && $params['page'] < $lower) {
			if ($before === null) {
				$before = '...';
			}
			for ($i = $lower; $i <= $params['pageCount']; $i++) {
				$out .= '<span>' . $this->link($i, array('page' => $i), $options) . '</span>';
				if ($i != $params['pageCount']) {
					$out .= $separator;
				}
			}
			$out = $before . $out;
		} elseif ($params['page'] < $params['pageCount']) {
			$out = $before . '<span>' . $this->link($last, array('page' => $params['pageCount']), $options) . '</span>';
		}
		return $out;
	}
}
?>