added new EasyGiant library

1 files changed, 140 insertions, 0 deletions

diff --git a/h-source/Library/Helper/Pages.php b/h-source/Library/Helper/Pages.php
new file mode 100755
index 0000000..d8ac856
--- /dev/null
+++ b/h-source/Library/Helper/Pages.php
@@ -0,0 +1,140 @@
+<?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>";
+	}
+
+}
\ No newline at end of file