helpers/smiley_helper.php

   1 <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
   2 /**
   3  * CodeIgniter
   4  *
   5  * An open source application development framework for PHP 4.3.2 or newer
   6  *
   7  * @package             CodeIgniter
   8  * @author              ExpressionEngine Dev Team
   9  * @copyright   Copyright (c) 2008 - 2009, EllisLab, Inc.
  10  * @license             http://codeigniter.com/user_guide/license.html
  11  * @link                http://codeigniter.com
  12  * @since               Version 1.0
  13  * @filesource
  14  */
  15
  16 // ------------------------------------------------------------------------
  17
  18 /**
  19  * CodeIgniter Smiley Helpers
  20  *
  21  * @package             CodeIgniter
  22  * @subpackage  Helpers
  23  * @category    Helpers
  24  * @author              ExpressionEngine Dev Team
  25  * @link                http://codeigniter.com/user_guide/helpers/smiley_helper.html
  26  */
  27
  28 // ------------------------------------------------------------------------
  29
  30 /**
  31  * Smiley Javascript
  32  *
  33  * Returns the javascript required for the smiley insertion.  Optionally takes
  34  * an array of aliases to loosely couple the smiley array to the view.
  35  *
  36  * @access      public
  37  * @param       mixed   alias name or array of alias->field_id pairs
  38  * @param       string  field_id if alias name was passed in
  39  * @return      array
  40  */
  41 if ( ! function_exists('smiley_js'))
  42 {
  43         function smiley_js($alias = '', $field_id = '')
  44         {
  45                 static $do_setup = TRUE;
  46
  47                 $r = '';
  48
  49                 if ($alias != '' && ! is_array($alias))
  50                 {
  51                         $alias = array($alias => $field_id);
  52                 }
  53
  54                 if ($do_setup === TRUE)
  55                 {
  56                                 $do_setup = FALSE;
  57
  58                                 $m = array();
  59
  60                                 if (is_array($alias))
  61                                 {
  62                                         foreach($alias as $name => $id)
  63                                         {
  64                                                 $m[] = '"'.$name.'" : "'.$id.'"';
  65                                         }
  66                                 }
  67
  68                                 $m = '{'.implode(',', $m).'}';
  69
  70                                 $r .= <<<EOF
  71
  72                                 var smiley_map = {$m};
  73
  74                                 function insert_smiley(smiley, field_id) {
  75                                         var el = document.getElementById(field_id), newStart;
  76
  77                                         if ( ! el && smiley_map[field_id]) {
  78                                                 el = document.getElementById(smiley_map[field_id]);
  79
  80                                                 if ( ! el)
  81                                                         return false;
  82                                         }
  83
  84                                         el.focus();
  85                                         smiley = " " + smiley;
  86
  87                                         if ('selectionStart' in el) {
  88                                                 newStart = el.selectionStart + smiley.length;
  89
  90                                                 el.value = el.value.substr(0, el.selectionStart) +
  91                                                                                 smiley +
  92                                                                                 el.value.substr(el.selectionEnd, el.value.length);
  93                                                 el.setSelectionRange(newStart, newStart);
  94                                         }
  95                                         else if (document.selection) {
  96                                                 document.selection.createRange().text = text;
  97                                         }
  98                                 }
  99 EOF;
 100                 }
 101                 else
 102                 {
 103                         if (is_array($alias))
 104                         {
 105                                 foreach($alias as $name => $id)
 106                                 {
 107                                         $r .= 'smiley_map["'.$name.'"] = "'.$id.'";'."\n";
 108                                 }
 109                         }
 110                 }
 111
 112                 return '<script type="text/javascript" charset="utf-8">'.$r.'</script>';
 113         }
 114 }
 115
 116 // ------------------------------------------------------------------------
 117
 118 /**
 119  * Get Clickable Smileys
 120  *
 121  * Returns an array of image tag links that can be clicked to be inserted
 122  * into a form field.
 123  *
 124  * @access      public
 125  * @param       string  the URL to the folder containing the smiley images
 126  * @return      array
 127  */
 128 if ( ! function_exists('get_clickable_smileys'))
 129 {
 130         function get_clickable_smileys($image_url, $alias = '', $smileys = NULL)
 131         {
 132                 // For backward compatibility with js_insert_smiley
 133
 134                 if (is_array($alias))
 135                 {
 136                         $smileys = $alias;
 137                 }
 138
 139                 if ( ! is_array($smileys))
 140                 {
 141                         if (FALSE === ($smileys = _get_smiley_array()))
 142                         {
 143                                 return $smileys;
 144                         }
 145                 }
 146
 147                 // Add a trailing slash to the file path if needed
 148                 $image_url = rtrim($image_url, '/').'/';
 149
 150                 $used = array();
 151                 foreach ($smileys as $key => $val)
 152                 {
 153                         // Keep duplicates from being used, which can happen if the
 154                         // mapping array contains multiple identical replacements.  For example:
 155                         // :-) and :) might be replaced with the same image so both smileys
 156                         // will be in the array.
 157                         if (isset($used[$smileys[$key][0]]))
 158                         {
 159                                 continue;
 160                         }
 161
 162                         $link[] = "<a href=\"javascript:void(0);\" onClick=\"insert_smiley('".$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>";
 163
 164                         $used[$smileys[$key][0]] = TRUE;
 165                 }
 166
 167                 return $link;
 168         }
 169 }
 170
 171 // ------------------------------------------------------------------------
 172
 173 /**
 174  * Parse Smileys
 175  *
 176  * Takes a string as input and swaps any contained smileys for the actual image
 177  *
 178  * @access      public
 179  * @param       string  the text to be parsed
 180  * @param       string  the URL to the folder containing the smiley images
 181  * @return      string
 182  */
 183 if ( ! function_exists('parse_smileys'))
 184 {
 185         function parse_smileys($str = '', $image_url = '', $smileys = NULL)
 186         {
 187                 if ($image_url == '')
 188                 {
 189                         return $str;
 190                 }
 191
 192                 if ( ! is_array($smileys))
 193                 {
 194                         if (FALSE === ($smileys = _get_smiley_array()))
 195                         {
 196                                 return $str;
 197                         }
 198                 }
 199
 200                 // Add a trailing slash to the file path if needed
 201                 $image_url = preg_replace("/(.+?)\/*$/", "\\1/",  $image_url);
 202
 203                 foreach ($smileys as $key => $val)
 204                 {
 205                         $str = str_replace($key, "<img src=\"".$image_url.$smileys[$key][0]."\" width=\"".$smileys[$key][1]."\" height=\"".$smileys[$key][2]."\" alt=\"".$smileys[$key][3]."\" style=\"border:0;\" />", $str);
 206                 }
 207
 208                 return $str;
 209         }
 210 }
 211
 212 // ------------------------------------------------------------------------
 213
 214 /**
 215  * Get Smiley Array
 216  *
 217  * Fetches the config/smiley.php file
 218  *
 219  * @access      private
 220  * @return      mixed
 221  */
 222 if ( ! function_exists('_get_smiley_array'))
 223 {
 224         function _get_smiley_array()
 225         {
 226                 if ( ! file_exists(APPPATH.'config/smileys'.EXT))
 227                 {
 228                         return FALSE;
 229                 }
 230
 231                 include(APPPATH.'config/smileys'.EXT);
 232
 233                 if ( ! isset($smileys) OR ! is_array($smileys))
 234                 {
 235                         return FALSE;
 236                 }
 237
 238                 return $smileys;
 239         }
 240 }
 241
 242 // ------------------------------------------------------------------------
 243
 244 /**
 245  * JS Insert Smiley
 246  *
 247  * Generates the javascript function needed to insert smileys into a form field
 248  *
 249  * DEPRECATED as of version 1.7.2, use smiley_js instead
 250  *
 251  * @access      public
 252  * @param       string  form name
 253  * @param       string  field name
 254  * @return      string
 255  */
 256 if ( ! function_exists('js_insert_smiley'))
 257 {
 258         function js_insert_smiley($form_name = '', $form_field = '')
 259         {
 260                 return <<<EOF
 261 <script type="text/javascript">
 262         function insert_smiley(smiley)
 263         {
 264                 document.{$form_name}.{$form_field}.value += " " + smiley;
 265         }
 266 </script>
 267 EOF;
 268         }
 269 }
 270
 271
 272 /* End of file smiley_helper.php */
 273 /* Location: ./system/helpers/smiley_helper.php */