<?php

// vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:

/**

 * Wikilink rule end renderer for Xhtml

 *

 * PHP versions 4 and 5

 *

 * @category   Text

 * @package    Text_Wiki

 * @author     Paul M. Jones <pmjones@php.net>

 * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1

 * @version    CVS: $Id: Wikilink.php,v 1.17 2006/02/28 03:15:09 justinpatrin Exp $

 * @link       http://pear.php.net/package/Text_Wiki

 */

/**

 * This class renders wiki links in XHTML.

 *

 * @category   Text

 * @package    Text_Wiki

 * @author     Paul M. Jones <pmjones@php.net>

 * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1

 * @version    Release: @package_version@

 * @link       http://pear.php.net/package/Text_Wiki

 */

class Text_Wiki_Render_Xhtml_Wikilink extends Text_Wiki_Render {

  var $conf;

  function Text_Wiki_Render_Xhtml_Wikilink() {

    $_utemp = contentPath.'%s';

    $this->conf = array(

        'pages' => array(), // set to null or false to turn off page checks

        'view_url' => $_utemp,

        'new_url'  => $_utemp,

        'new_text' => ' [x]',

        'new_text_pos' => false, // 'before', 'after', or null/false

        'css' => null,

        'css_new' => null,

        'exists_callback' => 'isPage' // call_user_func() callback

    );

  }

    /**

    *

    * Renders a token into XHTML.

    *

    * @access public

    *

    * @param array $options The "options" portion of the token (second

    * element).

    *

    * @return string The text rendered from the token options.

    *

    */

    function token($options)

    {

        global $session;

        // make nice variable names (page, anchor, text)

        extract($options);

        // is there a "page existence" callback?

        // we need to access it directly instead of through

        // getConf() because we'll need a reference (for

        // object instance method callbacks).

        if (isset($this->conf['exists_callback'])) {

            $callback =& $this->conf['exists_callback'];

        } else {

        	$callback = false;

        }

        if ($callback) {

            // use the callback function

            $exists = call_user_func($callback, $page);

        } else {

            // no callback, go to the naive page array.

            $list = $this->getConf('pages');

            if (is_array($list)) {

                // yes, check against the page list

                $exists = in_array($page, $list);

            } else {

                // no, assume it exists

                $exists = true;

            }

        }

        // convert *after* checking against page names so as not to mess

        // up what the user typed and what we're checking.

        //$page = $this->urlEncode($page);

        $anchor = $this->urlEncode($anchor);

        $text = $this->textEncode($text);

        // does the page exist?

        if ($exists) {

            // PAGE EXISTS.

            // link to the page view, but we have to build

            // the HREF.  we support both the old form where

            // the page always comes at the end, and the new

            // form that uses %s for sprintf()

            $href = $this->getConf('view_url');

            if (strpos($href, '%s') === false) {

                // use the old form (page-at-end)

                $href = $href . $page . $anchor;

            } else {

                // use the new form (sprintf format string)

                $href = sprintf($href, $page . $anchor);

            }

            // get the CSS class and generate output

            $css = $this->formatConf(' class="%s"', 'css');

            $start = '<a'.$css.' href="'.$href.$as.'">';

            $end = '</a>';

        } else {

            // PAGE DOES NOT EXIST.

            // link to the page view, but we have to build

            // the HREF.  we support both the old form where

            // the page always comes at the end, and the new

            // form that uses %s for sprintf()

            $href = $this->getConf('view_url');

            if (strpos($href, '%s') === false) {

                // use the old form (page-at-end)

                $href = $href . $page . $anchor;

            } else {

                // use the new form (sprintf format string)

                $href = sprintf($href, $page . $anchor);

            }

            // get the CSS class and generate output

            $css = $this->formatConf(' class="%s"', 'css');

            $start = '<a'.$css.' href="'.$href.$as.'" class="wikilink-nonexistent">';

            $end = '</a>';

        }

        if (!strlen($text)) {

            $start .= $this->textEncode($options['page']);

        }

        if (isset($type)) {

            switch ($type) {

            case 'start':

                $output = $start;

                break;

            case 'end':

                $output = $end;

                break;

            }

        } else {

            $output = $start.$text.$end;

        }

        return $output;

    }

}

?>