source: Dev/trunk/returnStep.php @ 168

<?php

require 'classes/master.php'; //should be at top of every page
/*
 * Return the HTML markup for visualisation of an object in a pipeline, to be used in the PipelineSequencer.php
 * Called by PipelineSequencer, posting UID of the step in question.
 *  TODO: Selection code. Onload doen of serverside?
 * Javascript voor selection scripts staat ook nog niet in de -onclick- property, eerst dat script uitzoeken, daarna pas invoegen.
 */

// Check if calling script actually passed a uid to use
if (isset($_POST['uids'])) {
    if (!empty($_POST['uids'])) {
        $sUids = $_POST['uids'];    // string uids
    } else {
        echo "Invalid UIDs passed!";
        return;
    }
} else {
    echo "No UID passed!";
}

$sTypes = "unknown";    // string types
if (isset($_POST['types'])) {
    if (!empty($_POST['types'])) {
        $sTypes = $_POST['types'];
    }
}

$uids = explode(",", $sUids);   // array uids
if ($sTypes != "unknown") {
    $types = explode(",", $sTypes);
}
$response = "";
$dbi = new DatabaseInterface();

if (isset($types)) {
    for ($i = 0; $i < count($uids); $i++) {
        $response .= processUid($uids[$i], $types[$i]);
    }
} else {
    for ($i = 0; $i < count($uids); $i++) {
        $response .= processUid($uids[$i]);
    }
}



echo $response;


/*
 * ProcessUid needs to be changed once all the object classes are fixed. The '123', '456' test cases are not functional and are for testing puroses only.
 * Additional onclick events for selecting objects would need to be added as well.
 */

function processUid($uid, $type = null) {
    $dbi = new DatabaseInterface();

    if ($uid == "divider") {    //a divider has been requested instead of a displaystep
        $responsePart = '<div class="divider"></div>';
        return $responsePart;
    }

    $result = null;
    $resultType = null;

    if ($type != null) {    // Als er een type is gespecificeerd
        $resultType = $type;
        $results = $dbi->get($type, array("uid" => $uid));
        if (count($results) > 0) {
            $result = $results[0];
        }
    }

    // Als er geen type is gespecificeerd, doorloop de queries in de volgorde: Survey, Application, Dashboard
    else {
        $surveys = $dbi->get("Survey", array("uid" => $uid));
        if (count($surveys) > 0) {
            if ($surveys[0] != null) {
                // A survey exists with the given UID!
                $result = $surveys[0];
                $resultType = "Survey";
            }
        }

        if ($result == null) {
            $applications = $dbi->get("Application", array("uid" => $uid));
            if (count($applications) > 0) {
                if ($applications[0] != null) {
                    // An application exists with the given UID!
                    $result = $applications[0];
                    $resultType = "Application";
                }
            }
        }

        if ($result == null) {
            $dashboards = $dbi->get("Dashboard", array("uid" => $uid));
            if (count($dashboards) > 0) {
                if ($dashboards[0] != null) {
                    // A dashboard exists with the given UID!
                    $result = $dashboards[0];
                    $resultType = "Dashboard";
                }
            }
        }
    }

// If result is still null at this point, the passed UID does not refer to an existing object!
    if ($result == null || $resultType == null) {
        echo "Non-existing UID passed!";
    } else {

        // set relevant variables based on the type and properties of the step in question (currently stored in $result)
        switch (strtolower($resultType)) {
            case "survey":
                $imageURL = "images/icons/survey.png";
                break;
            case "dashboard":
                $imageURL = "images/icons/dashboard.png";
                break;
            case "application":
                $imageURL = "images/icons/application.png";
                break;
            default:
                $imageURL = "images/icons/unknowntype.png";
                break;
        }

//echo out the HTML markup
        $responsePart = '<div class="displayStep" id="' . $result->uid . '" onClick="selectStep(this.id);"><div class="displayStepIcon"><img src="' . $imageURL . '" /></div>' . $result->title . '</div>';
        return $responsePart;
    }
}

?>