审查视图

simplewind/extend/alipay/lotusphp_runtime/Pagination/Pagination.php 6.7 KB
lihan authored
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226
<?php
class LtPagination
{
	public $configHandle;
	public $conf;

	public function __construct()
	{
		if (! $this->configHandle instanceof LtConfig)
		{
			if (class_exists("LtObjectUtil", false))
			{
				$this->configHandle = LtObjectUtil::singleton("LtConfig");
			}
			else
			{
				$this->configHandle = new LtConfig;
			}
		}
	}

	public function init()
	{
		$this->conf = $this->configHandle->get("pagination.pager");
		if (empty($this->conf))
		{
			$this->conf['per_page'] = 25; //每个页面中希望展示的项目数量 
			$this->conf['num_links_show'] = 9; //数字链接显示数量 
			$this->conf['num_point_start_end'] = 2; //“点”前边和后边的链接数量
			$this->conf['show_first'] = true;
			$this->conf['show_prev'] = true;
			$this->conf['show_next'] = true;
			$this->conf['show_last'] = true;
			$this->conf['show_goto'] = false;
			$this->conf['show_info'] = false;
			$this->conf['show_point'] = true;
			$this->conf['show_empty_button'] = false;

			$this->conf['first_text'] = 'First';
			$this->conf['prev_text'] = 'Prev';
			$this->conf['next_text'] = 'Next';
			$this->conf['last_text'] = 'Last';
			$this->conf['point_text'] = '...';

			$this->conf['full_tag_open'] = '<div class="pages">';
			$this->conf['full_tag_close'] = '</div>';
			$this->conf['num_tag_open'] = '';
			$this->conf['num_tag_close'] = '';
			$this->conf['link_tag_open'] = '<a href=":url">';
			$this->conf['link_tag_close'] = '</a>';
			$this->conf['link_tag_cur_open'] = '<strong>';
			$this->conf['link_tag_cur_close'] = '</strong>';
			$this->conf['button_tag_open'] = '<a href=":url" style="font-weight:bold">';
			$this->conf['button_tag_close'] = '</a>';
			$this->conf['button_tag_empty_open'] = '<span>';
			$this->conf['button_tag_empty_close'] = '</span>';
			$this->conf['point_tag_open'] = '<span>';
			$this->conf['point_tag_close'] = '</span>';
		}
	}

	/**
	 * 
	 * @param  $page int 当前页
	 * @param  $count int 这个数值是你查询数据库得到的数据总量
	 * @param  $url string 字串中使用 :page 表示页参数 不在意位置 如/a/:page/c/e
	 */
	public function pager($page, $count, $url)
	{
		$per_page = empty($this->conf['per_page']) ? 25 : $this->conf['per_page'];
		$pagecount = ceil($count / $per_page);
		$pager = $this->renderPager($page, $pagecount, $url);
		if ($this->conf['show_goto'])
		{
			$pager .= $this->renderButton('goto', $page, $pagecount, $url);
		}
		if ($this->conf['show_info'])
		{
			$pager .= $this->renderButton('info', $page, $pagecount, $url);
		}
		return $this->conf['full_tag_open'] . $pager . $this->conf['full_tag_close'];
	}

	/**
	 * 
	 * @param  $pagenumber int 当前页
	 * @param  $pagecount int 总页数
	 * @return string 
	 */
	public function renderPager($pagenumber, $pagecount, $baseurl = '?page=:page')
	{
		$baseurl = urldecode($baseurl);
		$pager = $this->conf['num_tag_open'];

		$pager .= $this->renderButton('first', $pagenumber, $pagecount, $baseurl);
		$pager .= $this->renderButton('prev', $pagenumber, $pagecount, $baseurl);

		$startPoint = 1;
		$endPoint = $this->conf['num_links_show'];
		$num_links = ceil($this->conf['num_links_show'] / 2) - 1;
		if ($pagenumber > $num_links)
		{
			$startPoint = $pagenumber - $num_links;
			$endPoint = $pagenumber + $num_links;
		}

		if ($endPoint > $pagecount)
		{
			$startPoint = $pagecount + 1 - $this->conf['num_links_show'];
			$endPoint = $pagecount;
		}

		if ($startPoint < 1)
		{
			$startPoint = 1;
		}

		$currentButton = '';
		if ($this->conf['show_point'])
		{
			for($page = 1; $page < $startPoint; $page++)
			{
				$url = str_replace(':page', $page, $baseurl);
				if ($page > $this->conf['num_point_start_end'])
				{
					$currentButton .= $this->conf['point_tag_open'] . $this->conf['point_text'] . $this->conf['point_tag_close'];
					break;
				}
				$currentButton .= str_replace(':url', $url, $this->conf['link_tag_open']) . $page . $this->conf['link_tag_close'];
			}
		}
		for ($page = $startPoint; $page <= $endPoint; $page++)
		{
			$url = str_replace(':page', $page, $baseurl);
			if ($page == $pagenumber)
			{
				$currentButton .= $this->conf['link_tag_cur_open'] . $page . $this->conf['link_tag_cur_close'];
			}
			else
			{
				$currentButton .= str_replace(':url', $url, $this->conf['link_tag_open']) . $page . $this->conf['link_tag_close'];
			}
		}
		if ($this->conf['show_point'])
		{
			$page = $pagecount - $this->conf['num_point_start_end'];
			if ($page > $endPoint)
			{
				$currentButton .= $this->conf['point_tag_open'] . $this->conf['point_text'] . $this->conf['point_tag_close'];
			}

			for($page += 1; $page >= $endPoint && $page <= $pagecount; $page++)
			{
				if ($page == $endPoint) continue;
				$url = str_replace(':page', $page, $baseurl);
				$currentButton .= str_replace(':url', $url, $this->conf['link_tag_open']) . $page . $this->conf['link_tag_close'];
			}
		}
		$pager .= $currentButton;
		$pager .= $this->renderButton('next', $pagenumber, $pagecount, $baseurl);
		$pager .= $this->renderButton('last', $pagenumber, $pagecount, $baseurl);
		$pager .= $this->conf['num_tag_close'];

		return $pager;
	}

	/**
	 * 
	 * @param  $buttonLabel string 显示文字
	 * @param  $pagenumber int 当前页
	 * @param  $pagecount int 总页数
	 * @return string 
	 */
	public function renderButton($buttonLabel, $pagenumber, $pagecount, $baseurl = '?page=:page')
	{
		$baseurl = urldecode($baseurl);
		$destPage = 1;
		if ('goto' == $buttonLabel)
		{
			$button = "goto <input type=\"text\" size=\"3\" onkeydown=\"javascript: if(event.keyCode==13){ location='{$baseurl}'.replace(':page',this.value);return false;}\" />";
			return $button;
		}
		if ('info' == $buttonLabel)
		{
			$button = " $pagenumber/$pagecount ";
			return $button;
		}
		switch ($buttonLabel)
		{
			case "first":
				$destPage = 1;
				$bottenText = $this->conf['first_text'];
				break;
			case "prev":
				$destPage = $pagenumber - 1;
				$bottenText = $this->conf['prev_text'];
				break;
			case "next":
				$destPage = $pagenumber + 1;
				$bottenText = $this->conf['next_text'];
				break;
			case "last":
				$destPage = $pagecount;
				$bottenText = $this->conf['last_text'];
				break;
		}
		$url = str_replace(':page', $destPage, $baseurl);
		$button = str_replace(':url', $url, $this->conf['button_tag_open']) . $bottenText . $this->conf['button_tag_close'];

		if ($buttonLabel == "first" || $buttonLabel == "prev")
		{
			if ($pagenumber <= 1)
			{
				$button = $this->conf['show_empty_button'] ? $this->conf['button_tag_empty_open'] . $bottenText . $this->conf['button_tag_empty_close'] : '';
			}
		}
		else
		{
			if ($pagenumber >= $pagecount)
			{
				$button = $this->conf['show_empty_button'] ? $this->conf['button_tag_empty_open'] . $bottenText . $this->conf['button_tag_empty_close'] : '';
			}
		}
		return $button;
	}
}