snap2/content/SnapContentMediaNetlogoApplet.php5

<?php

class SnapContentMediaNetlogoApplet extends SnapContent {
    private $hasUploaded = false;
    protected function doDelete() {
        if(!$this->validate())
            return true;

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

        return true;
    }
    protected function doCopy() {
        $newCM = new SnapContentMediaNetlogoApplet($this->version);

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

        $newCM->set('width', $this->get('width'));
        $newCM->set('height', $this->get('height'));
        $newCM->set('nlogo', $nlogo->copy()->getArray());

        return $newCM;
    }

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

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

        $nlogo = new SnapExternalFile($this->version, $this->get('nlogo'));
        $nlogourl = $nlogo->getURL();
        $toEmbedPath = Snap2::getMediaURLBase() . "/netlogo/NetLogoLite.jar";
        $width = $this->get('width');
        $height = $this->get('height');
        $html = <<<END_HTML
<applet code="org.nlogo.window.Applet"
archive="$toEmbedPath"
width="$width" height="$height">
<param name="DefaultModel"
value="$nlogourl">
</applet>
END_HTML;

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

        $nlogo = new SnapExternalFile($this->version);
        $nlogo->create($tmpFile, $fileName);

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

        return true;
    }

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

        $oldNlogofile = new SnapExternalFile($this->version, $oldCM->get('nlogo'));
        $newNlogofile = $oldNlogofile->copy();
        if(!$newNlogofile) {
            $this->setError("Could not copy netlogo file");
            return false;
        }

        $this->set('nlogo', $newNlogofile->getArray());
        $this->set('width', $oldCM->getWidth());
        $this->set('height', $oldCM->getHeight());

        $this->hasUploaded = true;

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

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

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

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

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

?>

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