smiley_helper.php

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<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package             CodeIgniter
 * @author              ExpressionEngine Dev Team
 * @copyright   Copyright (c) 2008, EllisLab, Inc.
 * @license             http://codeigniter.com/user_guide/license.html
 * @link                http://codeigniter.com
 * @since               Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter Smiley Helpers
 *
 * @package             CodeIgniter
 * @subpackage  Helpers
 * @category    Helpers
 * @author              ExpressionEngine Dev Team
 * @link                http://codeigniter.com/user_guide/helpers/smiley_helper.html
 */

// ------------------------------------------------------------------------

/**
 * JS Insert Smiley
 *
 * Generates the javascrip function needed to insert smileys into a form field
 *
 * @access      public
 * @param       string  form name
 * @param       string  field name
 * @return      string
 */
if ( ! function_exists('js_insert_smiley'))
{
        function js_insert_smiley($form_name = '', $form_field = '')
        {
                return <<<EOF
<script type="text/javascript">
        function insert_smiley(smiley)
        {
                document.{$form_name}.{$form_field}.value += " " + smiley;
        }
</script>
EOF;
        }
}
// ------------------------------------------------------------------------

/**
 * Get Clickable Smileys
 *
 * Returns an array of image tag links that can be clicked to be inserted 
 * into a form field.  
 *
 * @access      public
 * @param       string  the URL to the folder containing the smiley images
 * @return      array
 */
if ( ! function_exists('get_clickable_smileys'))
{
        function get_clickable_smileys($image_url = '', $smileys = NULL)
        {
                if ( ! is_array($smileys))
                {
                        if (FALSE === ($smileys = _get_smiley_array()))
                        {
                                return $smileys;
                        }
                }

                // Add a trailing slash to the file path if needed
                $image_url = preg_replace("/(.+?)\/*$/", "\\1/",  $image_url);

                $used = array();
                foreach ($smileys as $key => $val)
                {
                        // Keep duplicates from being used, which can happen if the
                        // mapping array contains multiple identical replacements.  For example:
                        // :-) and :) might be replaced with the same image so both smileys
                        // will be in the array.
                        if (isset($used[$smileys[$key][0]]))
                        {
                                continue;
                        }

                        $link[] = "<a href=\"javascript:void(0);\" onClick=\"insert_smiley('".$key."')\"><img src=\"".$image_url.$smileys[$key][0]."\" width=\"".$smileys[$key][1]."\" height=\"".$smileys[$key][2]."\" alt=\"".$smileys[$key][3]."\" style=\"border:0;\" /></a>";

                        $used[$smileys[$key][0]] = TRUE;
                }

                return $link;
        }
}

// ------------------------------------------------------------------------

/**
 * Parse Smileys
 *
 * Takes a string as input and swaps any contained smileys for the actual image
 *
 * @access      public
 * @param       string  the text to be parsed
 * @param       string  the URL to the folder containing the smiley images
 * @return      string
 */
if ( ! function_exists('parse_smileys'))
{
        function parse_smileys($str = '', $image_url = '', $smileys = NULL)
        {
                if ($image_url == '')
                {
                        return $str;
                }

                if ( ! is_array($smileys))
                {
                        if (FALSE === ($smileys = _get_smiley_array()))
                        {
                                return $str;
                        }
                }

                // Add a trailing slash to the file path if needed
                $image_url = preg_replace("/(.+?)\/*$/", "\\1/",  $image_url);

                foreach ($smileys as $key => $val)
                {
                        $str = str_replace($key, "<img src=\"".$image_url.$smileys[$key][0]."\" width=\"".$smileys[$key][1]."\" height=\"".$smileys[$key][2]."\" alt=\"".$smileys[$key][3]."\" style=\"border:0;\" />", $str);
                }

                return $str;
        }
}

// ------------------------------------------------------------------------

/**
 * Get Smiley Array
 *
 * Fetches the config/smiley.php file
 *
 * @access      private
 * @return      mixed
 */
if ( ! function_exists('_get_smiley_array'))
{
        function _get_smiley_array()
        {
                if ( ! file_exists(APPPATH.'config/smileys'.EXT))
                {
                        return FALSE;
                }

                include(APPPATH.'config/smileys'.EXT);

                if ( ! isset($smileys) OR ! is_array($smileys))
                {
                        return FALSE;
                }

                return $smileys;
        }
}


/* End of file smiley_helper.php */
/* Location: ./system/helpers/smiley_helper.php */