snap2/content/SnapContentMediaInteractivateApplet.php5

<?php

class SnapContentMediaInteractivateApplet extends SnapContent {
    // set to true when old info has been copied from an old CM
    private $hasUploaded = false;

    protected function doDelete() {
        if(!$this->validate())
            return true;

        $jar = new SnapExternalFile($this->version, $this->get('jar'));
        $jar->delete();

        return true;
    }

    protected function doCopy() {
        $newCM = new SnapContentMediaInteractivateApplet($this->version);

        if($this->get('jar') != '') {
            $jar = new SnapExternalFile($this->version, $this->get('jar'));
            $cp = $jar->copy();
            if(!$cp) {
                $this->setError("Failed to copy old jarfile: <ul><li>" . implode('</li><li>', $jar->getError()) . '</li></ul>');
                return null;
            }

            $newCM->set('width', $this->get('width'));
            $newCM->set('height', $this->get('height'));
            $newCM->set('appclass', $this->get('appclass'));
            $newCM->set('jar', $cp->getArray());
        }

        return $newCM;
    }

    protected function validate() {
        $values = $this->getAll();
        if(!isset($values['width']) || !isset($values['height'])
            || !isset($values['appclass']) || !isset($values['jar']))
            return false;
        else
            return true;
    }

    protected function doGetHTML($params) {
        if(!$this->validate())
            return false;

        $resourceId = $this->version->getResourceId();

        $jar = new SnapExternalFile($this->version, $this->get('jar'));
        $jarurl = $jar->getURL();
        
        $switcherPath =  'http://www.shodor.org/media/content//interactivate/switcher';
        $activityFullName = "Interactivate Java-based activity";
        $activityFullDescription = "Interactivate activities provide an engaging mathematics learning environment for elementary through undergraduate education.";
            
        $loginInfo = isset($params['loginInfo']) ? $params['loginInfo'] : false;

        if(isset($_REQUEST['shortName'])){
            $shortName = $_REQUEST['shortName'];
            $less = new InterActivity($shortName, array('iplus' => $loginInfo));
            $ct = $less->getContent();
        }
        else
            $ct = '';

        if (!is_string($ct)) {
          // There is no error.  Extract name and description from $ct

            $patterns = array("/'/", "/\n/", "/\t/", "/\r/", '/"/');
            $replacements = array("\'", "\\n", "\\t", "\\r", '\"');

            if (isset($ct['name'])) {
                $activityFullName = preg_replace($patterns, $replacements, $ct['name']);
            }
            if (isset($ct['description'])) { 
                $activityFullDescription = preg_replace($patterns, $replacements, $ct['description']);
            }
        }
        

        if($loginInfo == false) {
            $width = $this->get('width');
            $height = $this->get('height');
            $appclass = $this->get('appclass');
            $html = <<<END_HTML
<div id="interactivateAppletDiv_$resourceId">
<script type="text/javascript">
var AppClass = '$appclass';
var AppWidth = '$width';
var AppHeight = '$height';
var AppArchive = '$jarurl';
var InteractivatePlus = 'false';
var StudentId = '';
var Server = '';
var Port = '';
var Uri = '';
var ActivityFullName = '$activityFullName';
var ActivityFullDescription = '$activityFullDescription';
</script>
<script type="text/javascript" src="$switcherPath">
</script>
</div>

<div id="noJava" style="display:none;">

</div>
END_HTML;
        }
        else {
            // XXX: for Matt: use info in $loginInfo to generate different JavaScript here
            //  right now, it just does the same thing as the non-logged in case
            // {{{
            $width = $this->get('width');
            $height = $this->get('height');
            $appclass = $this->get('appclass');
            // TODO: this should be encrypted with the pubkey/privkey
            $studentId = $loginInfo['uid'];
            $server = $_SERVER['SERVER_NAME'];
            $port = $_SERVER['SERVER_PORT'];
            $uri = $_SERVER['REQUEST_URI'];

            $html = <<<END_HTML
<div id="interactivateAppletDiv_$resourceId">
<script type="text/javascript">
var AppClass = '$appclass';
var AppWidth = '$width';
var AppHeight = '$height';
var AppArchive = '$jarurl';
var StudentId = '$studentId';
var Server = '$server';
var Port = '$port';
var Uri = '$uri';
var InteractivatePlus = 'true';
var ActivityFullName = '$activityFullName';
var ActivityFullDescription = '$activityFullDescription';
</script>
<script type="text/javascript" src="$switcherPath">
</script>
</div>

<div id="noJava" style="display:none;">

</div>
END_HTML;
            // }}}
        }

        return $html;
    }

    public function uploadApplet($tmpFile, $fileName, $appclass, $width, $height) {
        if(!is_readable($tmpFile)) {
            $this->setError("File '$tmpFile' does not exist "
                . "or is not accessible");
            return false;
        }

        if(!preg_match("/[a-zA-Z0-9_]+\.class/", $appclass)) {
            $this->setError("Invalid applet class name: '$appclass'");
            return false;
        }
        if(!ctype_digit((string) $height) || $height <= 0) {
            $this->setError("Invalid height: '$height'");
            return false;
        }
        if(!ctype_digit((string) $width) || $width <= 0) {
            $this->setError("Invalid width: '$width'");
            return false;
        }

        $jar = new SnapExternalFile($this->version);
        if(!$jar->create($tmpFile, $fileName)) {
            $this->setError('Could not create jarfile: <ul><li>' . implode('</li><li>', $jar->getError()) . '</li></ul>');
            return false;
        }

        $this->set('width', $width);
        $this->set('height', $height);
        $this->set('appclass', $appclass);
        $this->set('jar', $jar->getArray());

        return true;
    }

    private function copyFrom($oldCM) {
        if($this->hasUploaded)
            return true;

        $oldJarfile = new SnapExternalFile($this->version, $oldCM->get('jar'));
        $newJarfile = $oldJarfile->copy();
        if(!$newJarfile) {
            $this->setError("Could not copy jarfile: <ul><li>" . implode('</li><li>', $oldJarFile->getError()) . '</li></ul>');
            return false;
        }

        $this->set('jar', $newJarfile->getArray());
        $this->set('width', $oldCM->getWidth());
        $this->set('height', $oldCM->getHeight());
        $this->set('appclass', $oldCM->getAppClass());

        $this->hasUploaded = true;

        return true;
    }

    public function setAppClass($oldCM, $appclass) {
        if(!preg_match("/[a-zA-Z0-9_]+\.class/", $appclass)) {
            $this->setError("Invalid applet class name: '$appclass'");
            return false;
        }
        if(!$this->copyFrom($oldCM))
            return false;
        $this->set('appclass', $appclass);
        return true;
    }

    public function setWidth($oldCM, $width) {
        if(!ctype_digit((string) $width) || $width <= 0) {
            $this->setError("Invalid width: '$width'");
            return false;
        }
        if(!$this->copyFrom($oldCM))
            return false;
        $this->set('width', $width);
        return true;
    }

    public function setHeight($oldCM, $height) {
        if(!ctype_digit((string) $height) || $height <= 0) {
            $this->setError("Invalid height: '$height'");
            return false;
        }
        if(!$this->copyFrom($oldCM))
            return false;
        $this->set('height', $height);
        return true;
    }

    public function getWidth() {
        if(!$this->validate())
            return false;

        return $this->get('width');
    }

    public function getHeight() {
        if(!$this->validate())
            return false;

        return $this->get('height');
    }

    public function getAppClass() {
        if(!$this->validate())
            return false;

        return $this->get('appclass');
    }

    public function getJarURL() {
        if(!$this->validate())
            return false;
        $file = new SnapExternalFile($this->version, $this->get('jar'));
        $url = $file->getURL();
        return $url;
    }

    public function getJarPath() {
        if(!$this->validate())
            return false;
        $file = new SnapExternalFile($this->version, $this->get('jar'));
        $path = $file->getPath();
        return $path;
    }

    public function getJarName() {
        if(!$this->validate())
            return false;
        $file = new SnapExternalFile($this->version, $this->get('jar'));
        $path = $file->getName();
        return $path;
    }

    public function getSize() {
        if(!$this->validate())
            return false;
        $file = new SnapExternalFile($this->version, $this->get('jar'));
        return filesize($file->getPath());
    }

    public function checkMedia() {
        if($this->get('jar') == '')
            return true;
        if(!$this->validate())
            return false;
        $jar = new SnapExternalFile($this->version, $this->get('jar'));
        $path = $jar->getPath();
        if(!is_readable($path) || !is_file($path))
            return false;
        else
            return true;
    }

    public function updateFileList() {
        if(!$this->validate())
            return 'no files to insert';
        SnapDBI::startTransaction();
        $jar = new SnapExternalFile($this->version, $this->get('jar'));
        if(!$jar->updateDB()) {
            SnapDBI::cancelTransaction();
            return 'database failure';
        }
        else {
            SnapDBI::commitTransaction();
            return true;
        }
    }
}

?>

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