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<?php
// EasyGiant is a PHP framework for creating and managing dynamic content
//
// Copyright (C) 2009 - 2011 Antonio Gallo
// See COPYRIGHT.txt and LICENSE.txt.
//
// This file is part of EasyGiant
//
// EasyGiant 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 3 of the License, or
// (at your option) any later version.
//
// EasyGiant 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 EasyGiant. If not, see <http://www.gnu.org/licenses/>.
if (!defined('EG')) die('Direct access not allowed!');
//Helper class to create the HTML of the page list
class Helper_Pages extends Helper_Html
{
protected $_urlViewAction; //url of the current page
protected $_currentPage; //number of the page
protected $_numbOfPages; //number of pages
protected $_variableArg = ''; //value of the $viewArgs key that has to be modified
public $previousString = null; //string of the link to the previous page
public $nextString = null; //string of the link to the next page
public $showNext = true;
public $showPrev = true;
//instance of Lang_{language}_Generic
public $strings = null;
public function __construct()
{
//get the generic language class
$this->strings = Factory_Strings::generic(Params::$language);
}
public function build($urlViewAction = '' , $variableArg = 'page', $previousString = 'previous', $nextString = 'next')
{
$this->_variableArg = $variableArg;
$this->_urlViewAction =$urlViewAction; //url of the controller and (/) main action
$this->previousString = $this->strings->gtext($previousString);
$this->nextString = $this->strings->gtext($nextString);
}
//return the number of pages
public function getNumbOfPages()
{
return $this->_numbOfPages;
}
//get the limit of the select query clause
public function getLimit($currentPage,$recordNumber,$recordPerPage)
{
$this->_currentPage = $currentPage;
$this->_numbOfPages=(($recordNumber%$recordPerPage)===0) ? (int) ($recordNumber/$recordPerPage) : ((int) ($recordNumber/$recordPerPage))+1;
$start=(($currentPage-1)*$recordPerPage);
return "$start,$recordPerPage";
}
//return the page list string
public function render($pageNumber,$numberOfPages)
{
$pageList = null;
if ($this->showPrev)
{
$pageList .= $this->pageLink($this->_currentPage-1,$this->previousString);
}
$pageList .= $this->recursiveLink($pageNumber,$numberOfPages);
if ($this->showNext)
{
$pageList .= $this->pageLink($this->_currentPage+1,$this->nextString);
}
return $pageList;
}
//recorsive function in order to write the page list
public function recursiveLink($pageNumber,$numberOfPages)
{
if ($numberOfPages === 0) return null;
if ($numberOfPages === 1) {
return $this->pageLink($pageNumber);
} else {
return $this->pageLink($pageNumber) . $this->recursiveLink($pageNumber+1,$numberOfPages-1);
}
}
public function pageLink($pageNumber, $string = null) {
if ($pageNumber > 0 and $pageNumber <= $this->_numbOfPages) {
return $this->html($pageNumber,$string);
} else {
return null;
}
}
//return the html link
public function html($pageNumber,$string = null) {
if (isset($string)) {
$strNumber = $string;
$strClass = "class='itemListPage'";
} else {
if ($pageNumber === $this->_currentPage)
{
$strNumber = $pageNumber;
$strClass = "class='currentPage'";
}
else
{
$strNumber = $pageNumber;
$strClass = "class='itemListPage'";
}
}
$this->viewArgs[$this->_variableArg] = $pageNumber;
$viewStatus = Url::createUrl(array_values($this->viewArgs));
$href= Url::getRoot(null) . $this->_urlViewAction .$viewStatus;
return $this->getATag($href,$strNumber,$strClass);
}
//get the HTMl of the tag
//$href: href of the link
//$text: the text of the link
//$strClass: the class of the link
public function getATag($href,$text,$strClass)
{
return "<a $strClass href='$href'>$text</a>";
}
}
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