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<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package             CodeIgniter
 * @author              ExpressionEngine Dev Team
 * @copyright   Copyright (c) 2008 - 2011, 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
 */

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

/**
 * Smiley Javascript
 *
 * Returns the javascript required for the smiley insertion.  Optionally takes
 * an array of aliases to loosely couple the smiley array to the view.
 *
 * @access      public
 * @param       mixed   alias name or array of alias->field_id pairs
 * @param       string  field_id if alias name was passed in
 * @return      array
 */
if ( ! function_exists('smiley_js'))
{
        function smiley_js($alias = '', $field_id = '', $inline = TRUE)
        {
                static $do_setup = TRUE;

                $r = '';

                if ($alias != '' && ! is_array($alias))
                {
                        $alias = array($alias => $field_id);
                }

                if ($do_setup === TRUE)
                {
                                $do_setup = FALSE;

                                $m = array();

                                if (is_array($alias))
                                {
                                        foreach ($alias as $name => $id)
                                        {
                                                $m[] = '"'.$name.'" : "'.$id.'"';
                                        }
                                }

                                $m = '{'.implode(',', $m).'}';

                                $r .= <<<EOF
                                var smiley_map = {$m};

                                function insert_smiley(smiley, field_id) {
                                        var el = document.getElementById(field_id), newStart;

                                        if ( ! el && smiley_map[field_id]) {
                                                el = document.getElementById(smiley_map[field_id]);

                                                if ( ! el)
                                                        return false;
                                        }

                                        el.focus();
                                        smiley = " " + smiley;

                                        if ('selectionStart' in el) {
                                                newStart = el.selectionStart + smiley.length;

                                                el.value = el.value.substr(0, el.selectionStart) +
                                                                                smiley +
                                                                                el.value.substr(el.selectionEnd, el.value.length);
                                                el.setSelectionRange(newStart, newStart);
                                        }
                                        else if (document.selection) {
                                                document.selection.createRange().text = smiley;
                                        }
                                }
EOF;
                }
                else
                {
                        if (is_array($alias))
                        {
                                foreach ($alias as $name => $id)
                                {
                                        $r .= 'smiley_map["'.$name.'"] = "'.$id.'";'."\n";
                                }
                        }
                }

                if ($inline)
                {
                        return '<script type="text/javascript" charset="utf-8">/*<![CDATA[ */'.$r.'// ]]></script>';
                }
                else
                {
                        return $r;
                }
        }
}

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

/**
 * 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, $alias = '', $smileys = NULL)
        {
                // For backward compatibility with js_insert_smiley

                if (is_array($alias))
                {
                        $smileys = $alias;
                }

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

                // Add a trailing slash to the file path if needed
                $image_url = rtrim($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."', '".$alias."')\"><img src=\"".$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 (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/smileys.php'))
                {
                    include(APPPATH.'config/'.ENVIRONMENT.'/smileys.php');
                }
                elseif (file_exists(APPPATH.'config/smileys.php'))
                {
                        include(APPPATH.'config/smileys.php');
                }
                
                if (isset($smileys) AND is_array($smileys))
                {
                        return $smileys;
                }

                return FALSE;
        }
}

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

/**
 * JS Insert Smiley
 *
 * Generates the javascript function needed to insert smileys into a form field
 *
 * DEPRECATED as of version 1.7.2, use smiley_js instead
 *
 * @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;
        }
}


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