tags to enable formatting
 * using CSS.
 *
 * @author  Pascal Van Hecke
 * @since   1.7
 * @package de.bitfolge.feedcreator
 */
class HTMLCreator extends FeedCreator
{
    protected $contentType = "text/html";
    /**
     * Contains HTML to be output at the start of the feed's html representation.
     */
    public $header;
    /**
     * Contains HTML to be output at the end of the feed's html representation.
     */
    public $footer;
    /**
     * Contains HTML to be output between entries. A separator is only used in
     * case of multiple entries.
     */
    public $separator;
    /**
     * Used to prefix the stylenames to make sure they are unique
     * and do not clash with stylenames on the user's page.
     */
    public $stylePrefix;
    /** @var bool Determines whether the links open in a new window or not. */
    public $openInNewWindow = true;
    /** @var string image alignments in output */
    public $imageAlign = "right";
    /**
     * In case of very simple output you may want to get rid of the style tags,
     * hence this variable.  There's no equivalent on item level, but of course you can
     * add strings to it while iterating over the items ($this->stylelessOutput .= ...)
     * and when it is non-empty, ONLY the styleless output is printed, the rest is ignored
     * in the function createFeed().
     */
    public $stylelessOutput = "";
    /**
     * Writes the HTML.
     *
     * @inheritdoc
     */
    public function createFeed()
    {
        // if there is styleless output, use the content of this variable and ignore the rest
        if ($this->stylelessOutput != "") {
            return $this->stylelessOutput;
        }
        //if no stylePrefix is set, generate it yourself depending on the script name
        if ($this->stylePrefix == "") {
            $this->stylePrefix = str_replace(".", "_", $this->_generateFilename())."_";
        }
        //set an openInNewWindow_token_to be inserted or not
        if ($this->openInNewWindow) {
            $targetInsert = " class='target_blank'";
        } else {
            $targetInsert = '';
        }
        // use this array to put the lines in and implode later with "document.write" javascript
        $feedArray = array();
        if ($this->image != null) {
            $imageStr = "".
                "image->width) {
                $imageStr .= " width='".$this->image->width."' ";
            }
            if ($this->image->height) {
                $imageStr .= " height='".$this->image->height."' ";
            }
            $imageStr .= "/>";
            $feedArray[] = $imageStr;
        }
        if ($this->title) {
            $feedArray[] = "