system/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 5.1.6 or newer
   6  *
   7  * @package             CodeIgniter
   8  * @author              ExpressionEngine Dev Team
   9  * @copyright   Copyright (c) 2008 - 2011, 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 = '', $inline = TRUE)
  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                                 $r .= <<<EOF
  71                                 var smiley_map = {$m};
  72
  73                                 function insert_smiley(smiley, field_id) {
  74                                         var el = document.getElementById(field_id), newStart;
  75
  76                                         if ( ! el && smiley_map[field_id]) {
  77                                                 el = document.getElementById(smiley_map[field_id]);
  78
  79                                                 if ( ! el)
  80                                                         return false;
  81                                         }
  82
  83                                         el.focus();
  84                                         smiley = " " + smiley;
  85
  86                                         if ('selectionStart' in el) {
  87                                                 newStart = el.selectionStart + smiley.length;
  88
  89                                                 el.value = el.value.substr(0, el.selectionStart) +
  90                                                                                 smiley +
  91                                                                                 el.value.substr(el.selectionEnd, el.value.length);
  92                                                 el.setSelectionRange(newStart, newStart);
  93                                         }
  94                                         else if (document.selection) {
  95                                                 document.selection.createRange().text = smiley;
  96                                         }
  97                                 }
  98 EOF;
  99                 }
 100                 else
 101                 {
 102                         if (is_array($alias))
 103                         {
 104                                 foreach ($alias as $name => $id)
 105                                 {
 106                                         $r .= 'smiley_map["'.$name.'"] = "'.$id.'";'."\n";
 107                                 }
 108                         }
 109                 }
 110
 111                 if ($inline)
 112                 {
 113                         return '<script type="text/javascript" charset="utf-8">/*<![CDATA[ */'.$r.'// ]]></script>';
 114                 }
 115                 else
 116                 {
 117                         return $r;
 118                 }
 119         }
 120 }
 121
 122 // ------------------------------------------------------------------------
 123
 124 /**
 125  * Get Clickable Smileys
 126  *
 127  * Returns an array of image tag links that can be clicked to be inserted
 128  * into a form field.
 129  *
 130  * @access      public
 131  * @param       string  the URL to the folder containing the smiley images
 132  * @return      array
 133  */
 134 if ( ! function_exists('get_clickable_smileys'))
 135 {
 136         function get_clickable_smileys($image_url, $alias = '', $smileys = NULL)
 137         {
 138                 // For backward compatibility with js_insert_smiley
 139
 140                 if (is_array($alias))
 141                 {
 142                         $smileys = $alias;
 143                 }
 144
 145                 if ( ! is_array($smileys))
 146                 {
 147                         if (FALSE === ($smileys = _get_smiley_array()))
 148                         {
 149                                 return $smileys;
 150                         }
 151                 }
 152
 153                 // Add a trailing slash to the file path if needed
 154                 $image_url = rtrim($image_url, '/').'/';
 155
 156                 $used = array();
 157                 foreach ($smileys as $key => $val)
 158                 {
 159                         // Keep duplicates from being used, which can happen if the
 160                         // mapping array contains multiple identical replacements.  For example:
 161                         // :-) and :) might be replaced with the same image so both smileys
 162                         // will be in the array.
 163                         if (isset($used[$smileys[$key][0]]))
 164                         {
 165                                 continue;
 166                         }
 167
 168                         $link[] = "<a href=\"javascript:void(0);\" onclick=\"insert_smiley('".$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>";
 169
 170                         $used[$smileys[$key][0]] = TRUE;
 171                 }
 172
 173                 return $link;
 174         }
 175 }
 176
 177 // ------------------------------------------------------------------------
 178
 179 /**
 180  * Parse Smileys
 181  *
 182  * Takes a string as input and swaps any contained smileys for the actual image
 183  *
 184  * @access      public
 185  * @param       string  the text to be parsed
 186  * @param       string  the URL to the folder containing the smiley images
 187  * @return      string
 188  */
 189 if ( ! function_exists('parse_smileys'))
 190 {
 191         function parse_smileys($str = '', $image_url = '', $smileys = NULL)
 192         {
 193                 if ($image_url == '')
 194                 {
 195                         return $str;
 196                 }
 197
 198                 if ( ! is_array($smileys))
 199                 {
 200                         if (FALSE === ($smileys = _get_smiley_array()))
 201                         {
 202                                 return $str;
 203                         }
 204                 }
 205
 206                 // Add a trailing slash to the file path if needed
 207                 $image_url = preg_replace("/(.+?)\/*$/", "\\1/",  $image_url);
 208
 209                 foreach ($smileys as $key => $val)
 210                 {
 211                         $str = str_replace($key, "<img src=\"".$image_url.$smileys[$key][0]."\" width=\"".$smileys[$key][1]."\" height=\"".$smileys[$key][2]."\" alt=\"".$smileys[$key][3]."\" style=\"border:0;\" />", $str);
 212                 }
 213
 214                 return $str;
 215         }
 216 }
 217
 218 // ------------------------------------------------------------------------
 219
 220 /**
 221  * Get Smiley Array
 222  *
 223  * Fetches the config/smiley.php file
 224  *
 225  * @access      private
 226  * @return      mixed
 227  */
 228 if ( ! function_exists('_get_smiley_array'))
 229 {
 230         function _get_smiley_array()
 231         {
 232                 if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/smileys'.EXT))
 233                 {
 234                     include(APPPATH.'config/'.ENVIRONMENT.'/smileys'.EXT);
 235                 }
 236                 elseif (file_exists(APPPATH.'config/smileys'.EXT))
 237                 {
 238                         include(APPPATH.'config/smileys'.EXT);
 239                 }
 240
 241                 if (isset($smileys) AND is_array($smileys))
 242                 {
 243                         return $smileys;
 244                 }
 245
 246                 return FALSE;
 247         }
 248 }
 249
 250 // ------------------------------------------------------------------------
 251
 252 /**
 253  * JS Insert Smiley
 254  *
 255  * Generates the javascript function needed to insert smileys into a form field
 256  *
 257  * DEPRECATED as of version 1.7.2, use smiley_js instead
 258  *
 259  * @access      public
 260  * @param       string  form name
 261  * @param       string  field name
 262  * @return      string
 263  */
 264 if ( ! function_exists('js_insert_smiley'))
 265 {
 266         function js_insert_smiley($form_name = '', $form_field = '')
 267         {
 268                 return <<<EOF
 269 <script type="text/javascript">
 270         function insert_smiley(smiley)
 271         {
 272                 document.{$form_name}.{$form_field}.value += " " + smiley;
 273         }
 274 </script>
 275 EOF;
 276         }
 277 }
 278
 279
 280 /* End of file smiley_helper.php */
 281 /* Location: ./system/helpers/smiley_helper.php */