Source for file WStepDisplayBar.class.php

<?php
/**
 * @since Jul 20, 2005
 * @package polyphony.wizard.components
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: WStepDisplayBar.class.php,v 1.5 2007/09/19 14:04:51 adamfranco Exp $
 */ 
 
require_once(POLYPHONY."/main/library/Wizard/WizardComponent.abstract.php");
 
/**
 * This adds a "Next" button to the wizard and throws the appropriate event.
 * 
 * @since Jul 20, 2005
 * @package polyphony.wizard.components
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: WStepDisplayBar.class.php,v 1.5 2007/09/19 14:04:51 adamfranco Exp $
 */
class WStepDisplayBar 
    extends WizardComponent 
{
    var $_stepContainer;
//     var $_event = "'edu.middlebury.polyphony.wizard.step_changed";
    
    
    
    /**
     * Constructor
     * @param ref object $stepContainer A {@link WizardStepContainer} object.
     * @param optional string $event
     * @access public
     * @return void 
     */
    function WStepDisplayBar ($stepContainer) {
        $this->_stepContainer =$stepContainer;
    }
    
    /**
     * Tells the wizard component to update itself - this may include getting
     * form post data or validation - whatever this particular component wants to
     * do every pageload.
     * @param string $fieldName The field name to use when outputting form data or
     *  similar parameters/information.
     * @access public
     * @return boolean - TRUE if everything is OK
     */
    function update ($fieldName) {
        $val = RequestContext::value($fieldName);
        if ($val !== '' && $val !== null) {
            // advance the step!
            $this->_stepContainer->setStepByKey($val);
        }
    }
    
    /**
     * Returns the values of wizard-components. Should return an array if children are involved,
     * otherwise a whatever type of object is expected.
     * @access public
     * @return mixed 
     */
    function getAllValues () {
        return null;
    }
    
    /**
     * Returns a block of XHTML-valid code that contains markup for this specific
     * component.
     * @param string $fieldName The field name to use when outputting form data or
     *  similar parameters/information.
     * @access public
     * @return string 
     */
    function getMarkup ($fieldName) {
        ob_start();
        print "<div>";
        print "<input type='hidden' name='".$fieldName."' value=''/>";
        
        $steps = $this->_stepContainer->getSteps();
        $currStep = $this->_stepContainer->getCurrentStep();
        $a = array();
        foreach (array_keys($steps) as $stepKey) {
            ob_start();
            if ($stepKey == $currStep) 
                print "<b>";
            else {
                print "<a href='#' onclick=\"";
                print "var input = this.parentNode.firstChild; ";
                print "input.value = '".$stepKey."'; ";
                print "input.form.submit(); ";
                print "return false; \">";
            }
            
            print ($stepKey+1).". ".$steps[$stepKey]->getDisplayName();
            
            if ($stepKey == $currStep) 
                print "</b>";
            else
                print "</a>";
            
            $a[] = ob_get_clean();
        }
        print implode("\n&raquo;\n", $a);
        print "</div>";
        return ob_get_clean();
    }
}
 
?>