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         /** @var string */
  32         protected $msg;
  33
  34         /** @var array */
  35         protected $licenses = array();
  36
  37         /** @var string */
  38         protected $html;
  39         /**#@-*/
  40
  41         /**
  42          * @param array $params
  43          */
  44         public function __construct( $params ) {
  45                 parent::__construct( $params );
  46
  47                 $this->msg = empty( $params['licenses'] )
  48                         ? wfMessage( 'licenses' )->inContentLanguage()->plain()
  49                         : $params['licenses'];
  50                 $this->selected = null;
  51
  52                 $this->makeLicenses();
  53         }
  54
  55         /**
  56          * @private
  57          */
  58         protected function makeLicenses() {
  59                 $levels = array();
  60                 $lines = explode( "\n", $this->msg );
  61
  62                 foreach ( $lines as $line ) {
  63                         if ( strpos( $line, '*' ) !== 0 ) {
  64                                 continue;
  65                         } else {
  66                                 list( $level, $line ) = $this->trimStars( $line );
  67
  68                                 if ( strpos( $line, '|' ) !== false ) {
  69                                         $obj = new License( $line );
  70                                         $this->stackItem( $this->licenses, $levels, $obj );
  71                                 } else {
  72                                         if ( $level < count( $levels ) ) {
  73                                                 $levels = array_slice( $levels, 0, $level );
  74                                         }
  75                                         if ( $level == count( $levels ) ) {
  76                                                 $levels[$level - 1] = $line;
  77                                         } elseif ( $level > count( $levels ) ) {
  78                                                 $levels[] = $line;
  79                                         }
  80                                 }
  81                         }
  82                 }
  83         }
  84
  85         /**
  86          * @param string $str
  87          * @return array
  88          */
  89         protected function trimStars( $str ) {
  90                 $numStars = strspn( $str, '*' );
  91                 return array( $numStars, ltrim( substr( $str, $numStars ), ' ' ) );
  92         }
  93
  94         /**
  95          * @param array $list
  96          * @param array $path
  97          * @param mixed $item
  98          */
  99         protected function stackItem( &$list, $path, $item ) {
 100                 $position =& $list;
 101                 if ( $path ) {
 102                         foreach ( $path as $key ) {
 103                                 $position =& $position[$key];
 104                         }
 105                 }
 106                 $position[] = $item;
 107         }
 108
 109         /**
 110          * @param array $tagset
 111          * @param int $depth
 112          */
 113         protected function makeHtml( $tagset, $depth = 0 ) {
 114                 foreach ( $tagset as $key => $val ) {
 115                         if ( is_array( $val ) ) {
 116                                 $this->html .= $this->outputOption(
 117                                         $key, '',
 118                                         array(
 119                                                 'disabled' => 'disabled',
 120                                                 'style' => 'color: GrayText', // for MSIE
 121                                         ),
 122                                         $depth
 123                                 );
 124                                 $this->makeHtml( $val, $depth + 1 );
 125                         } else {
 126                                 $this->html .= $this->outputOption(
 127                                         $val->text, $val->template,
 128                                         array( 'title' => '{{' . $val->template . '}}' ),
 129                                         $depth
 130                                 );
 131                         }
 132                 }
 133         }
 134
 135         /**
 136          * @param string $message
 137          * @param string $value
 138          * @param null|array $attribs
 139          * @param int $depth
 140          * @return string
 141          */
 142         protected function outputOption( $message, $value, $attribs = null, $depth = 0 ) {
 143                 $msgObj = $this->msg( $message );
 144                 $text = $msgObj->exists() ? $msgObj->text() : $message;
 145                 $attribs['value'] = $value;
 146                 if ( $value === $this->selected ) {
 147                         $attribs['selected'] = 'selected';
 148                 }
 149
 150                 $val = str_repeat( /* &nbsp */ "\xc2\xa0", $depth * 2 ) . $text;
 151                 return str_repeat( "\t", $depth ) . Xml::element( 'option', $attribs, $val ) . "\n";
 152         }
 153
 154         /**#@-*/
 155
 156         /**
 157          *  Accessor for $this->licenses
 158          *
 159          * @return array
 160          */
 161         public function getLicenses() {
 162                 return $this->licenses;
 163         }
 164
 165         /**
 166          * Accessor for $this->html
 167          *
 168          * @param bool $value
 169          *
 170          * @return string
 171          */
 172         public function getInputHTML( $value ) {
 173                 $this->selected = $value;
 174
 175                 $this->html = $this->outputOption( wfMessage( 'nolicense' )->text(), '',
 176                         (bool)$this->selected ? null : array( 'selected' => 'selected' ) );
 177                 $this->makeHtml( $this->getLicenses() );
 178
 179                 $attribs = array(
 180                         'name' => $this->mName,
 181                         'id' => $this->mID
 182                 );
 183                 if ( !empty( $this->mParams['disabled'] ) ) {
 184                         $attibs['disabled'] = 'disabled';
 185                 }
 186
 187                 return Html::rawElement( 'select', $attribs, $this->html );
 188         }
 189 }
 190
 191 /**
 192  * A License class for use on Special:Upload (represents a single type of license).
 193  */
 194 class License {
 195         /** @var string */
 196         public $template;
 197
 198         /** @var string */
 199         public $text;
 200
 201         /**
 202          * @param string $str License name??
 203          */
 204         function __construct( $str ) {
 205                 list( $text, $template ) = explode( '|', strrev( $str ), 2 );
 206
 207                 $this->template = strrev( $template );
 208                 $this->text = strrev( $text );
 209         }
 210 }