includes/Licenses.php

   1 <?php
   2 /**
   3  * License selector for use on Special:Upload.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  23  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
  24  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  25  */
  26
  27 /**
  28  * A License class for use on Special:Upload
  29  */
  30 class Licenses extends HTMLFormField {
  31         /**
  32          * @var string
  33          */
  34         protected $msg;
  35
  36         /**
  37          * @var array
  38          */
  39         protected $licenses = array();
  40
  41         /**
  42          * @var string
  43          */
  44         protected $html;
  45         /**#@-*/
  46
  47         /**
  48          * Constructor
  49          *
  50          * @param array $params
  51          */
  52         public function __construct( $params ) {
  53                 parent::__construct( $params );
  54
  55                 $this->msg = empty( $params['licenses'] ) ? wfMessage( 'licenses' )->inContentLanguage()->plain() : $params['licenses'];
  56                 $this->selected = null;
  57
  58                 $this->makeLicenses();
  59         }
  60
  61         /**
  62          * @private
  63          */
  64         protected function makeLicenses() {
  65                 $levels = array();
  66                 $lines = explode( "\n", $this->msg );
  67
  68                 foreach ( $lines as $line ) {
  69                         if ( strpos( $line, '*' ) !== 0 ) {
  70                                 continue;
  71                         } else {
  72                                 list( $level, $line ) = $this->trimStars( $line );
  73
  74                                 if ( strpos( $line, '|' ) !== false ) {
  75                                         $obj = new License( $line );
  76                                         $this->stackItem( $this->licenses, $levels, $obj );
  77                                 } else {
  78                                         if ( $level < count( $levels ) ) {
  79                                                 $levels = array_slice( $levels, 0, $level );
  80                                         }
  81                                         if ( $level == count( $levels ) ) {
  82                                                 $levels[$level - 1] = $line;
  83                                         } elseif ( $level > count( $levels ) ) {
  84                                                 $levels[] = $line;
  85                                         }
  86                                 }
  87                         }
  88                 }
  89         }
  90
  91         /**
  92          * @param string $str
  93          * @return array
  94          */
  95         protected function trimStars( $str ) {
  96                 $numStars = strspn( $str, '*' );
  97                 return array( $numStars, ltrim( substr( $str, $numStars ), ' ' ) );
  98         }
  99
 100         /**
 101          * @param array $list
 102          * @param array $path
 103          * @param mixed $item
 104          */
 105         protected function stackItem( &$list, $path, $item ) {
 106                 $position =& $list;
 107                 if ( $path ) {
 108                         foreach ( $path as $key ) {
 109                                 $position =& $position[$key];
 110                         }
 111                 }
 112                 $position[] = $item;
 113         }
 114
 115         /**
 116          * @param array $tagset
 117          * @param int $depth
 118          */
 119         protected function makeHtml( $tagset, $depth = 0 ) {
 120                 foreach ( $tagset as $key => $val ) {
 121                         if ( is_array( $val ) ) {
 122                                 $this->html .= $this->outputOption(
 123                                         $key, '',
 124                                         array(
 125                                                 'disabled' => 'disabled',
 126                                                 'style' => 'color: GrayText', // for MSIE
 127                                         ),
 128                                         $depth
 129                                 );
 130                                 $this->makeHtml( $val, $depth + 1 );
 131                         } else {
 132                                 $this->html .= $this->outputOption(
 133                                         $val->text, $val->template,
 134                                         array( 'title' => '{{' . $val->template . '}}' ),
 135                                         $depth
 136                                 );
 137                         }
 138                 }
 139         }
 140
 141         /**
 142          * @param string $message
 143          * @param string $value
 144          * @param null|array $attribs
 145          * @param int $depth
 146          * @return string
 147          */
 148         protected function outputOption( $message, $value, $attribs = null, $depth = 0 ) {
 149                 $msgObj = $this->msg( $message );
 150                 $text = $msgObj->exists() ? $msgObj->text() : $message;
 151                 $attribs['value'] = $value;
 152                 if ( $value === $this->selected ) {
 153                         $attribs['selected'] = 'selected';
 154                 }
 155
 156                 $val = str_repeat( /* &nbsp */ "\xc2\xa0", $depth * 2 ) . $text;
 157                 return str_repeat( "\t", $depth ) . Xml::element( 'option', $attribs, $val ) . "\n";
 158         }
 159
 160         /**#@-*/
 161
 162         /**
 163          *  Accessor for $this->licenses
 164          *
 165          * @return array
 166          */
 167         public function getLicenses() {
 168                 return $this->licenses;
 169         }
 170
 171         /**
 172          * Accessor for $this->html
 173          *
 174          * @param bool $value
 175          *
 176          * @return string
 177          */
 178         public function getInputHTML( $value ) {
 179                 $this->selected = $value;
 180
 181                 $this->html = $this->outputOption( wfMessage( 'nolicense' )->text(), '',
 182                         (bool)$this->selected ? null : array( 'selected' => 'selected' ) );
 183                 $this->makeHtml( $this->getLicenses() );
 184
 185                 $attribs = array(
 186                         'name' => $this->mName,
 187                         'id' => $this->mID
 188                 );
 189                 if ( !empty( $this->mParams['disabled'] ) ) {
 190                         $attibs['disabled'] = 'disabled';
 191                 }
 192
 193                 return Html::rawElement( 'select', $attribs, $this->html );
 194         }
 195 }
 196
 197 /**
 198  * A License class for use on Special:Upload (represents a single type of license).
 199  */
 200 class License {
 201         /**
 202          * @var string
 203          */
 204         var $template;
 205
 206         /**
 207          * @var string
 208          */
 209         var $text;
 210
 211         /**
 212          * Constructor
 213          *
 214          * @param string $str license name??
 215          */
 216         function __construct( $str ) {
 217                 list( $text, $template ) = explode( '|', strrev( $str ), 2 );
 218
 219                 $this->template = strrev( $template );
 220                 $this->text = strrev( $text );
 221         }
 222 }