Source for file ResultPrinter.abstract.php

<?php
/**
 * @since 12/7/05
 * @package polyphony.resultprinter
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: ResultPrinter.abstract.php,v 1.7 2007/09/19 14:04:49 adamfranco Exp $
 */ 
 
/**
 * This abstract class provides common methods for child classes
 * 
 * @since 12/7/05
 * @package polyphony.resultprinter
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: ResultPrinter.abstract.php,v 1.7 2007/09/19 14:04:49 adamfranco Exp $
 */
class ResultPrinter {
 
    /**
     * Answer the number of the first asset on our current page
     * 
     * @return integer 1 through the total number of items
     * @access public
     * @since 5/11/06
     */
    function getStartingNumber () {
        if (isset($this->_namespace) && is_string($this->_namespace)) {
            $harmoni = Harmoni::instance();
            $harmoni->request->startNamespace($this->_namespace);
        }
        
        if (RequestContext::value('starting_number'))
            $num = RequestContext::value('starting_number');
        else if (isset($this->_startingNumber))
            $num = $this->_startingNumber;
        else
            $num = 1;
            
        if (isset($this->_namespace) && is_string($this->_namespace))
            $harmoni->request->endNamespace();
        
        return $num;
    }
    
    /**
     * Set the starting number to use if none is passed
     * 
     * @param integer $startingNumber 
     * @return void 
     * @access public
     * @since 5/15/06
     */
    function setStartingNumber ($startingNumber) {
        $this->_startingNumber = $startingNumber;
    }
    
    /**
     * Answer the parameter name used to pass the starting number
     * (for inclusion in other urls).
     * 
     * @return string 
     * @access public
     * @since 5/11/06
     */
    function startingNumberParam () {
        return RequestContext::name('starting_number');
    }
    
    /**
     * Set the namespace to use for page links, this is to limit conflict with
     * other result printers on the page.
     * 
     * @param string $namespace 
     * @return void 
     * @access public
     * @since 9/18/06
     */
    function setNamespace ($namespace) {
        ArgumentValidator::validate($namespace, StringValidatorRule::getRule());
        $this->_namespace = $namespace;
    }
        
    /**
     * Return a string containing HTML links to other pages of the iterator.
     * if all items fit on one page, an empty string will be returned.
     * 
     * @param integer $startingNumber The item number to start with.
     * @param integer $numItems The total number of Items.
     * @return string 
     * @access public
     * @since 12/7/05
     */
    function getPageLinks ($startingNumber, $numItems) {
        if ($numItems > $this->_pageSize) {
            $harmoni = Harmoni::instance();
            
            if (isset($this->_namespace) && is_string($this->_namespace))
                $harmoni->request->startNamespace($this->_namespace);
            
            ob_start();
            print "\n<table width='100%'>";
            print "\n\t<tr>";
            print "\n\t\t<td>";
            $numPages = ceil($numItems/$this->_pageSize);
            
            if ($this->_pageSize > 1)
                $currentPage = floor($startingNumber/$this->_pageSize)+1; // add one for 1-based counting
            else
                $currentPage = $startingNumber;
            
            
            $pagesAround = 2;
            
            $firstPage = $currentPage - $pagesAround;
            if ($firstPage <= 1)
                $firstPage = 1;
            else if ($firstPage > ($numPages - (2 * $pagesAround))) {
                $firstPage = $numPages - (2 * $pagesAround);
                if ($firstPage <= 1)
                    $firstPage = 1;
            }
            
            $url =$harmoni->request->mkURLWithPassthrough();
            
            $lastPage = $firstPage + (2 * $pagesAround);
            if ($lastPage > $numPages)
                $lastPage = $numPages;
            
            if ($currentPage == 1) {
//                print "&lt;&lt; \n";
            } else {
                $url->setValue("starting_number", 1);
//                 print "<a href='";
//                 print $url->write();
//                 print "'>&lt;&lt;</a> \n";
                
                if ($firstPage > 1) {
                    print "<a href='";
                    print $url->write();
                    print "'>1</a> ";
                    if ($firstPage > 2)
                        print " ... \n";
                }
            }
            
            for ($i = $firstPage; $i <= $lastPage; $i++) {
                print " ";
                if ($i != $currentPage) {
                    $url->setValue("starting_number", (($i-1)*$this->_pageSize+1));
                    
                    print "<a href='";
                    print $url->write();
                    print "'>";
                }
                print $i;
                if ($i != $currentPage)
                    print "</a>\n";
            }
            
            if ($currentPage == $numPages) {
//                print " &gt;&gt;\n";
            } else {
                $url->setValue("starting_number", (($numPages-1)*$this->_pageSize+1));
                
                if ($lastPage < $numPages) {
                    if ($lastPage < $numPages - 1)
                        print " ... ";
                    print "<a href='";
                    print $url->write();
                    print "'>".$numPages."</a> \n";
                }
                
//                 print " <a href='";
//                 print $url->write();
//                 print "'>&gt;&gt;</a>\n";
            }
            
            print "\n\t\t</td>";
            if ($numPages > 2*$pagesAround + 3) {
                print "\n\t\t<td style='text-align: center'>";
            } else {
                print "\n\t\t<td style='text-align: right'>";
            }
            print "(";
            print $startingNumber;
            print "-";
            print ($startingNumber + $this->_pageSize - 1);
            print " "._("of")." ".$numItems." "._("items").")";
            
            if ($numPages > 2*$pagesAround + 3) {
                print "\n\t\t</td>\n\t\t<td style='text-align: right'>\n\t\t\t"._("Go to page:")." \n\t\t\t<select onchange='Javascript:jumpToPage(this);'>\n";
                for ($i = 1; $i <= $numPages; $i++) {
                    $value = ($i-1)*$this->_pageSize + 1;
                    print "\t<option value='".$value."'";
                    if ($i == $currentPage)
                        print " selected='selected'";
                    print ">".$i."</option>\n";
                }
                print "</select>\n";
                
                $url->setValue("starting_number", "__________");
                $urlString = str_replace("__________", "' + inputField.value + '",
                                str_replace('&amp;', '&', $url->write()));
                print "\n<script type='text/javascript'>\n//<![CDATA[";
                print "\n    function jumpToPage(inputField) {";
                print "\n        window.location = '".$urlString."'";
                print "\n    }";
                print "\n//]]>\n</script>\n";
            }
            print "\n\t\t</td>";
            print "\n\t</tr>";
            print "\n</table>";
            
            $html = ob_get_contents();
            ob_end_clean();
            
            if (isset($this->_namespace) && is_string($this->_namespace))
                $harmoni->request->endNamespace();
            
            return $html;
        } else {
            return "";
        }
    }
    
}
 
?>