source: Dev/trunk/classes/pipelineSequencer.php @ 166

<?php
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 * A visual interface object for editing and viewing a session's pipeline.
 *
 * @author Tschipper
 */
class PipelineSequencer {

    // properties
    private $loadedSession;
    private $selectedStep;
    private $dbi;

    public function __construct() {
        $this->dbi = new DatabaseInterface();
    }

    public function init() {
        $stringPipeline = "";
        $stringPipelineType = "";
        $stringPipelineUpdated = "";
        $numberOfSteps = 0;

        if (is_array($this->loadedSession->pipeline)) {
            foreach ($this->loadedSession->pipeline as $object) {
                $stringPipeline .= "$object->uid,";
                $stringPipelineType .= get_class($object) . ",";
                $stringPipelineUpdated .= "1,";
                $numberOfSteps++;
            }
        } else {
            $stringPipeline = $this->loadedSession->pipeline;
            $stringPipelineType = $_POST['pipelineTypes'];
            $stringPipelineUpdated = $_POST['pipelineUpdatedField'];
        }
        ?>
        <br /><form name="sequencerForm" action="pipelineEditor.php" method="post">
            <fieldset id="sequencer">
                <div class="title">Name: <?php echo $this->loadedSession->title; ?> </div>

                <div id="seqContent"></div>

                <div id="controls">
                    <input type="submit" id="moveSelectedLeft" name="moveSelectedLeft" value="< Move" class="surveyButton" />
                    <input type="submit" id="moveSelectedRight" name="moveSelectedRight" value="Move >" class="surveyButton" />
                    <input type="submit" id="editSelected" name="editSelected" value="Edit step" class="surveyButton" />
                    <input type="submit" id="deleteSelected" name="deleteSelected" value="Delete step" class="surveyButton" />
                    <input type="submit" id ="clearPipeline" name="clearPipeline" value="Clear pipeline" class="surveyButton dis" disabled="true"/>
                    <input type="checkbox" id="confirmClear" name="confirmClear" onChange="IsCheckEnabled(this, document.getElementById('clearPipeline'));" />Really clear?
                    <input type="button" id="t_saveSession" name="t_saveSession" onClick="savePipeline();" value="t_Save_session!" />
                    <input type="button" id="t_setOOD" name="t_setOOD" onClick="t_setOutOfDate();" value="t_Set_OOD" />
                    <input type="button" id="t_updateSeq" name="t_updateSeq" onClick="updateSequencer();" value="t_Update_Seq" />
                </div>
                <div id="hiddenInputs">
                    <input type="hidden" name="selectedStep" id="selectedStepField" value="" />
                    <input type="hidden" name="pipelineString" id="pipelineStringField" value="<?php echo $stringPipeline; ?>" />
                    <input type="hidden" name="pipelineTypes" id="pipelineTypeField" value="<?php echo $stringPipelineType; ?>" />
                    <input type="hidden" name="pipelineUpDated" id="pipelineUpdatedField" value="<?php echo $stringPipelineUpdated; ?>" />
                    <input type="hidden" name="numSteps" id="numSteps" value="<?php echo $numberOfSteps; ?>" />
                    <input type="hidden" name="session" id="sessionField" value="<?php echo $this->loadedSession->uid; ?>" />
                </div>
            </fieldset>
        </form>
        <?php
    }

    public function DrawSteps() {
        // Use AJAX to draw visual representations of step objects in a pipeline
        // <TODO> Implement parameters such as screen size in the drawing of objects </TODO>
        ?>
        <script type="text/javascript">
            drawSteps();
        </script>


        <?php
    }

    public function Javascript() {
        $pipelineString = "ERROR";

        echo "<!--$pipelineString-->";
        ?>
        <script type="text/javascript" src="js/sequencerScripts.js"></script>
        <script type="text/javascript" src="js/jquery.js"></script>
        <script type="text/javascript">
            $(document).ready(function() {
                drawSteps();
            });
        </script>
        <?php
    }

    public function LoadSession($currentSession) {   // Initialize variables on page load.
        if (!isset($currentSession)) {
            redirect("selectSession.php");
        }
        if (isset($_SESSION['updateNeeded'])) {    // user has performed an operation that flags session to be reloaded from DB, or is first load of page for that session
            $sessionResults = $this->dbi->get("Session", array("uid" => $currentSession));

            if (count($sessionResults) > 0) {
                $_SESSION['localSessionCopy'] = $sessionResults[0];
                unset($_SESSION['updateNeeded']);
            } else {
                die("No session with that UID found!");
            }
        }

        if (isset($_SESSION['localSessionCopy']) && !empty($_SESSION['localSessionCopy'])) {

            $this->loadedSession = $_SESSION['localSessionCopy'];
            unset($_SESSION['updateNeeded']);
        }
    }

    public function HandlePostData() {
        if (isset($_POST['editSelected'])) {
            if (isset($_POST['selectedStep']) && !empty($_POST['selectedStep'])) {
                redirect("editredirect.php");
            }
        }

        if (isset($_POST['moveSelectedLeft'])) {
            if (isset($_POST['selectedStep']) && !empty($_POST['selectedStep'])) {
                $this->MoveStep($_POST['selectedStep'], -1);
            }
        }

        if (isset($_POST['moveSelectedRight'])) {
            if (isset($_POST['selectedStep']) && !empty($_POST['selectedStep'])) {
                $this->MoveStep($_POST['selectedStep'], 1);
            }
        }

        if (isset($_POST['objectToCreate']) && !empty($_POST['objectToCreate'])) {
            switch (strtolower($_POST['objectToCreate'])) {
                case "survey":
                    redirect("createsurvey.php");
                    break;
                case "application":
                    redirect("createapplication.php");
                    break;
                case "dashboard":
                    redirect("createdashboard.php");
                    break;
                default:
                    // Er is iets fout gegaan, want er is geen valid type meegegeven!
                    break;
            }
        }
    }

    // Dit is een pure php versie. Deze slaat nog niet op in de Database, en reageert nog niet op 
    public function MoveStep($uid, $direction) {
        $newSession = $this->loadedSession;

        for ($i = 0; $i < count($newSession->pipeline); $i++) {
            if ($newSession->pipeline[$i]->uid == $uid) {
                $temp = $newSession->pipeline[$i];
                $newSession->pipeline[$i] = $newSession->pipeline[$i + $direction];
                $newSession->pipeline[$i + $direction] = $temp;
                break;
            }
        }

        $this->loadedSession = $newSession;
        redirect("pipelineEditor.php");
    }

}
?>