includes/skins/BaseTemplate.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 use Wikimedia\WrappedString;
  22 use Wikimedia\WrappedStringList;
  23
  24 /**
  25  * New base template for a skin's template extended from QuickTemplate
  26  * this class features helper methods that provide common ways of interacting
  27  * with the data stored in the QuickTemplate
  28  */
  29 abstract class BaseTemplate extends QuickTemplate {
  30
  31         /**
  32          * Get a Message object with its context set
  33          *
  34          * @param string $name Message name
  35          * @param mixed $params,... Message params
  36          * @return Message
  37          */
  38         public function getMsg( $name /* ... */ ) {
  39                 return $this->getSkin()->msg( ...func_get_args() );
  40         }
  41
  42         function msg( $str ) {
  43                 echo $this->getMsg( $str )->escaped();
  44         }
  45
  46         /**
  47          * @deprecated since 1.33 Use ->msg() or ->getMsg() instead.
  48          */
  49         function msgWiki( $str ) {
  50                 // TODO: Add wfDeprecated( __METHOD__, '1.33' ) after 1.33 got released
  51                 echo $this->getMsg( $str )->parseAsBlock();
  52         }
  53
  54         /**
  55          * Create an array of common toolbox items from the data in the quicktemplate
  56          * stored by SkinTemplate.
  57          * The resulting array is built according to a format intended to be passed
  58          * through makeListItem to generate the html.
  59          * @return array
  60          */
  61         function getToolbox() {
  62                 $toolbox = [];
  63                 if ( isset( $this->data['nav_urls']['whatlinkshere'] )
  64                         && $this->data['nav_urls']['whatlinkshere']
  65                 ) {
  66                         $toolbox['whatlinkshere'] = $this->data['nav_urls']['whatlinkshere'];
  67                         $toolbox['whatlinkshere']['id'] = 't-whatlinkshere';
  68                 }
  69                 if ( isset( $this->data['nav_urls']['recentchangeslinked'] )
  70                         && $this->data['nav_urls']['recentchangeslinked']
  71                 ) {
  72                         $toolbox['recentchangeslinked'] = $this->data['nav_urls']['recentchangeslinked'];
  73                         $toolbox['recentchangeslinked']['msg'] = 'recentchangeslinked-toolbox';
  74                         $toolbox['recentchangeslinked']['id'] = 't-recentchangeslinked';
  75                         $toolbox['recentchangeslinked']['rel'] = 'nofollow';
  76                 }
  77                 if ( isset( $this->data['feeds'] ) && $this->data['feeds'] ) {
  78                         $toolbox['feeds']['id'] = 'feedlinks';
  79                         $toolbox['feeds']['links'] = [];
  80                         foreach ( $this->data['feeds'] as $key => $feed ) {
  81                                 $toolbox['feeds']['links'][$key] = $feed;
  82                                 $toolbox['feeds']['links'][$key]['id'] = "feed-$key";
  83                                 $toolbox['feeds']['links'][$key]['rel'] = 'alternate';
  84                                 $toolbox['feeds']['links'][$key]['type'] = "application/{$key}+xml";
  85                                 $toolbox['feeds']['links'][$key]['class'] = 'feedlink';
  86                         }
  87                 }
  88                 foreach ( [ 'contributions', 'log', 'blockip', 'emailuser',
  89                         'userrights', 'upload', 'specialpages' ] as $special
  90                 ) {
  91                         if ( isset( $this->data['nav_urls'][$special] ) && $this->data['nav_urls'][$special] ) {
  92                                 $toolbox[$special] = $this->data['nav_urls'][$special];
  93                                 $toolbox[$special]['id'] = "t-$special";
  94                         }
  95                 }
  96                 if ( isset( $this->data['nav_urls']['print'] ) && $this->data['nav_urls']['print'] ) {
  97                         $toolbox['print'] = $this->data['nav_urls']['print'];
  98                         $toolbox['print']['id'] = 't-print';
  99                         $toolbox['print']['rel'] = 'alternate';
 100                         $toolbox['print']['msg'] = 'printableversion';
 101                 }
 102                 if ( isset( $this->data['nav_urls']['permalink'] ) && $this->data['nav_urls']['permalink'] ) {
 103                         $toolbox['permalink'] = $this->data['nav_urls']['permalink'];
 104                         $toolbox['permalink']['id'] = 't-permalink';
 105                 }
 106                 if ( isset( $this->data['nav_urls']['info'] ) && $this->data['nav_urls']['info'] ) {
 107                         $toolbox['info'] = $this->data['nav_urls']['info'];
 108                         $toolbox['info']['id'] = 't-info';
 109                 }
 110
 111                 // Avoid PHP 7.1 warning from passing $this by reference
 112                 $template = $this;
 113                 Hooks::run( 'BaseTemplateToolbox', [ &$template, &$toolbox ] );
 114                 return $toolbox;
 115         }
 116
 117         /**
 118          * Create an array of personal tools items from the data in the quicktemplate
 119          * stored by SkinTemplate.
 120          * The resulting array is built according to a format intended to be passed
 121          * through makeListItem to generate the html.
 122          * This is in reality the same list as already stored in personal_urls
 123          * however it is reformatted so that you can just pass the individual items
 124          * to makeListItem instead of hardcoding the element creation boilerplate.
 125          * @return array
 126          */
 127         function getPersonalTools() {
 128                 $personal_tools = [];
 129                 foreach ( $this->get( 'personal_urls' ) as $key => $plink ) {
 130                         # The class on a personal_urls item is meant to go on the <a> instead
 131                         # of the <li> so we have to use a single item "links" array instead
 132                         # of using most of the personal_url's keys directly.
 133                         $ptool = [
 134                                 'links' => [
 135                                         [ 'single-id' => "pt-$key" ],
 136                                 ],
 137                                 'id' => "pt-$key",
 138                         ];
 139                         if ( isset( $plink['active'] ) ) {
 140                                 $ptool['active'] = $plink['active'];
 141                         }
 142                         foreach ( [ 'href', 'class', 'text', 'dir', 'data', 'exists' ] as $k ) {
 143                                 if ( isset( $plink[$k] ) ) {
 144                                         $ptool['links'][0][$k] = $plink[$k];
 145                                 }
 146                         }
 147                         $personal_tools[$key] = $ptool;
 148                 }
 149                 return $personal_tools;
 150         }
 151
 152         function getSidebar( $options = [] ) {
 153                 // Force the rendering of the following portals
 154                 $sidebar = $this->data['sidebar'];
 155                 if ( !isset( $sidebar['SEARCH'] ) ) {
 156                         $sidebar['SEARCH'] = true;
 157                 }
 158                 if ( !isset( $sidebar['TOOLBOX'] ) ) {
 159                         $sidebar['TOOLBOX'] = true;
 160                 }
 161                 if ( !isset( $sidebar['LANGUAGES'] ) ) {
 162                         $sidebar['LANGUAGES'] = true;
 163                 }
 164
 165                 if ( !isset( $options['search'] ) || $options['search'] !== true ) {
 166                         unset( $sidebar['SEARCH'] );
 167                 }
 168                 if ( isset( $options['toolbox'] ) && $options['toolbox'] === false ) {
 169                         unset( $sidebar['TOOLBOX'] );
 170                 }
 171                 if ( isset( $options['languages'] ) && $options['languages'] === false ) {
 172                         unset( $sidebar['LANGUAGES'] );
 173                 }
 174
 175                 $boxes = [];
 176                 foreach ( $sidebar as $boxName => $content ) {
 177                         if ( $content === false ) {
 178                                 continue;
 179                         }
 180                         switch ( $boxName ) {
 181                                 case 'SEARCH':
 182                                         // Search is a special case, skins should custom implement this
 183                                         $boxes[$boxName] = [
 184                                                 'id' => 'p-search',
 185                                                 'header' => $this->getMsg( 'search' )->text(),
 186                                                 'generated' => false,
 187                                                 'content' => true,
 188                                         ];
 189                                         break;
 190                                 case 'TOOLBOX':
 191                                         $msgObj = $this->getMsg( 'toolbox' );
 192                                         $boxes[$boxName] = [
 193                                                 'id' => 'p-tb',
 194                                                 'header' => $msgObj->exists() ? $msgObj->text() : 'toolbox',
 195                                                 'generated' => false,
 196                                                 'content' => $this->getToolbox(),
 197                                         ];
 198                                         break;
 199                                 case 'LANGUAGES':
 200                                         if ( $this->data['language_urls'] !== false ) {
 201                                                 $msgObj = $this->getMsg( 'otherlanguages' );
 202                                                 $boxes[$boxName] = [
 203                                                         'id' => 'p-lang',
 204                                                         'header' => $msgObj->exists() ? $msgObj->text() : 'otherlanguages',
 205                                                         'generated' => false,
 206                                                         'content' => $this->data['language_urls'] ?: [],
 207                                                 ];
 208                                         }
 209                                         break;
 210                                 default:
 211                                         $msgObj = $this->getMsg( $boxName );
 212                                         $boxes[$boxName] = [
 213                                                 'id' => "p-$boxName",
 214                                                 'header' => $msgObj->exists() ? $msgObj->text() : $boxName,
 215                                                 'generated' => true,
 216                                                 'content' => $content,
 217                                         ];
 218                                         break;
 219                         }
 220                 }
 221
 222                 // HACK: Compatibility with extensions still using SkinTemplateToolboxEnd
 223                 $hookContents = null;
 224                 if ( isset( $boxes['TOOLBOX'] ) ) {
 225                         ob_start();
 226                         // We pass an extra 'true' at the end so extensions using BaseTemplateToolbox
 227                         // can abort and avoid outputting double toolbox links
 228                         // Avoid PHP 7.1 warning from passing $this by reference
 229                         $template = $this;
 230                         Hooks::run( 'SkinTemplateToolboxEnd', [ &$template, true ] );
 231                         $hookContents = ob_get_contents();
 232                         ob_end_clean();
 233                         if ( !trim( $hookContents ) ) {
 234                                 $hookContents = null;
 235                         }
 236                 }
 237                 // END hack
 238
 239                 if ( isset( $options['htmlOnly'] ) && $options['htmlOnly'] === true ) {
 240                         foreach ( $boxes as $boxName => $box ) {
 241                                 if ( is_array( $box['content'] ) ) {
 242                                         $content = '<ul>';
 243                                         foreach ( $box['content'] as $key => $val ) {
 244                                                 $content .= "\n " . $this->makeListItem( $key, $val );
 245                                         }
 246                                         // HACK, shove the toolbox end onto the toolbox if we're rendering itself
 247                                         if ( $hookContents ) {
 248                                                 $content .= "\n $hookContents";
 249                                         }
 250                                         // END hack
 251                                         $content .= "\n</ul>\n";
 252                                         $boxes[$boxName]['content'] = $content;
 253                                 }
 254                         }
 255                 } elseif ( $hookContents ) {
 256                         $boxes['TOOLBOXEND'] = [
 257                                 'id' => 'p-toolboxend',
 258                                 'header' => $boxes['TOOLBOX']['header'],
 259                                 'generated' => false,
 260                                 'content' => "<ul>{$hookContents}</ul>",
 261                         ];
 262                         // HACK: Make sure that TOOLBOXEND is sorted next to TOOLBOX
 263                         $boxes2 = [];
 264                         foreach ( $boxes as $key => $box ) {
 265                                 if ( $key === 'TOOLBOXEND' ) {
 266                                         continue;
 267                                 }
 268                                 $boxes2[$key] = $box;
 269                                 if ( $key === 'TOOLBOX' ) {
 270                                         $boxes2['TOOLBOXEND'] = $boxes['TOOLBOXEND'];
 271                                 }
 272                         }
 273                         $boxes = $boxes2;
 274                         // END hack
 275                 }
 276
 277                 return $boxes;
 278         }
 279
 280         /**
 281          * @param string $name
 282          */
 283         protected function renderAfterPortlet( $name ) {
 284                 echo $this->getAfterPortlet( $name );
 285         }
 286
 287         /**
 288          * Allows extensions to hook into known portlets and add stuff to them
 289          *
 290          * @param string $name
 291          *
 292          * @return string html
 293          * @since 1.29
 294          */
 295         protected function getAfterPortlet( $name ) {
 296                 $html = '';
 297                 $content = '';
 298                 Hooks::run( 'BaseTemplateAfterPortlet', [ $this, $name, &$content ] );
 299
 300                 if ( $content !== '' ) {
 301                         $html = Html::rawElement(
 302                                 'div',
 303                                 [ 'class' => [ 'after-portlet', 'after-portlet-' . $name ] ],
 304                                 $content
 305                         );
 306                 }
 307
 308                 return $html;
 309         }
 310
 311         /**
 312          * Makes a link, usually used by makeListItem to generate a link for an item
 313          * in a list used in navigation lists, portlets, portals, sidebars, etc...
 314          *
 315          * @param string $key Usually a key from the list you are generating this
 316          * link from.
 317          * @param array $item Contains some of a specific set of keys.
 318          *
 319          * The text of the link will be generated either from the contents of the
 320          * "text" key in the $item array, if a "msg" key is present a message by
 321          * that name will be used, and if neither of those are set the $key will be
 322          * used as a message name.
 323          *
 324          * If a "href" key is not present makeLink will just output htmlescaped text.
 325          * The "href", "id", "class", "rel", and "type" keys are used as attributes
 326          * for the link if present.
 327          *
 328          * If an "id" or "single-id" (if you don't want the actual id to be output
 329          * on the link) is present it will be used to generate a tooltip and
 330          * accesskey for the link.
 331          *
 332          * The keys "context" and "primary" are ignored; these keys are used
 333          * internally by skins and are not supposed to be included in the HTML
 334          * output.
 335          *
 336          * If you don't want an accesskey, set $item['tooltiponly'] = true;
 337          *
 338          * If a "data" key is present, it must be an array, where the keys represent
 339          * the data-xxx properties with their provided values. For example,
 340          *     $item['data'] = [
 341          *       'foo' => 1,
 342          *       'bar' => 'baz',
 343          *     ];
 344          * will render as element properties:
 345          *     data-foo='1' data-bar='baz'
 346          *
 347          * @param array $options Can be used to affect the output of a link.
 348          * Possible options are:
 349          *   - 'text-wrapper' key to specify a list of elements to wrap the text of
 350          *   a link in. This should be an array of arrays containing a 'tag' and
 351          *   optionally an 'attributes' key. If you only have one element you don't
 352          *   need to wrap it in another array. eg: To use <a><span>...</span></a>
 353          *   in all links use [ 'text-wrapper' => [ 'tag' => 'span' ] ]
 354          *   for your options.
 355          *   - 'link-class' key can be used to specify additional classes to apply
 356          *   to all links.
 357          *   - 'link-fallback' can be used to specify a tag to use instead of "<a>"
 358          *   if there is no link. eg: If you specify 'link-fallback' => 'span' than
 359          *   any non-link will output a "<span>" instead of just text.
 360          *
 361          * @return string
 362          */
 363         function makeLink( $key, $item, $options = [] ) {
 364                 $text = $item['text'] ?? wfMessage( $item['msg'] ?? $key )->text();
 365
 366                 $html = htmlspecialchars( $text );
 367
 368                 if ( isset( $options['text-wrapper'] ) ) {
 369                         $wrapper = $options['text-wrapper'];
 370                         if ( isset( $wrapper['tag'] ) ) {
 371                                 $wrapper = [ $wrapper ];
 372                         }
 373                         while ( count( $wrapper ) > 0 ) {
 374                                 $element = array_pop( $wrapper );
 375                                 $html = Html::rawElement( $element['tag'], $element['attributes'] ?? null, $html );
 376                         }
 377                 }
 378
 379                 if ( isset( $item['href'] ) || isset( $options['link-fallback'] ) ) {
 380                         $attrs = $item;
 381                         foreach ( [ 'single-id', 'text', 'msg', 'tooltiponly', 'context', 'primary',
 382                                 'tooltip-params', 'exists' ] as $k ) {
 383                                 unset( $attrs[$k] );
 384                         }
 385
 386                         if ( isset( $attrs['data'] ) ) {
 387                                 foreach ( $attrs['data'] as $key => $value ) {
 388                                         $attrs[ 'data-' . $key ] = $value;
 389                                 }
 390                                 unset( $attrs[ 'data' ] );
 391                         }
 392
 393                         if ( isset( $item['id'] ) && !isset( $item['single-id'] ) ) {
 394                                 $item['single-id'] = $item['id'];
 395                         }
 396
 397                         $tooltipParams = [];
 398                         if ( isset( $item['tooltip-params'] ) ) {
 399                                 $tooltipParams = $item['tooltip-params'];
 400                         }
 401
 402                         if ( isset( $item['single-id'] ) ) {
 403                                 $tooltipOption = isset( $item['exists'] ) && $item['exists'] === false ? 'nonexisting' : null;
 404
 405                                 if ( isset( $item['tooltiponly'] ) && $item['tooltiponly'] ) {
 406                                         $title = Linker::titleAttrib( $item['single-id'], $tooltipOption, $tooltipParams );
 407                                         if ( $title !== false ) {
 408                                                 $attrs['title'] = $title;
 409                                         }
 410                                 } else {
 411                                         $tip = Linker::tooltipAndAccesskeyAttribs(
 412                                                 $item['single-id'],
 413                                                 $tooltipParams,
 414                                                 $tooltipOption
 415                                         );
 416                                         if ( isset( $tip['title'] ) && $tip['title'] !== false ) {
 417                                                 $attrs['title'] = $tip['title'];
 418                                         }
 419                                         if ( isset( $tip['accesskey'] ) && $tip['accesskey'] !== false ) {
 420                                                 $attrs['accesskey'] = $tip['accesskey'];
 421                                         }
 422                                 }
 423                         }
 424                         if ( isset( $options['link-class'] ) ) {
 425                                 if ( isset( $attrs['class'] ) ) {
 426                                         $attrs['class'] .= " {$options['link-class']}";
 427                                 } else {
 428                                         $attrs['class'] = $options['link-class'];
 429                                 }
 430                         }
 431                         $html = Html::rawElement( isset( $attrs['href'] )
 432                                 ? 'a'
 433                                 : $options['link-fallback'], $attrs, $html );
 434                 }
 435
 436                 return $html;
 437         }
 438
 439         /**
 440          * Generates a list item for a navigation, portlet, portal, sidebar... list
 441          *
 442          * @param string $key Usually a key from the list you are generating this link from.
 443          * @param array $item Array of list item data containing some of a specific set of keys.
 444          * The "id", "class" and "itemtitle" keys will be used as attributes for the list item,
 445          * if "active" contains a value of true a "active" class will also be appended to class.
 446          *
 447          * @param array $options
 448          *
 449          * If you want something other than a "<li>" you can pass a tag name such as
 450          * "tag" => "span" in the $options array to change the tag used.
 451          * link/content data for the list item may come in one of two forms
 452          * A "links" key may be used, in which case it should contain an array with
 453          * a list of links to include inside the list item, see makeLink for the
 454          * format of individual links array items.
 455          *
 456          * Otherwise the relevant keys from the list item $item array will be passed
 457          * to makeLink instead. Note however that "id" and "class" are used by the
 458          * list item directly so they will not be passed to makeLink
 459          * (however the link will still support a tooltip and accesskey from it)
 460          * If you need an id or class on a single link you should include a "links"
 461          * array with just one link item inside of it. You can also set "link-class" in
 462          * $item to set a class on the link itself. If you want to add a title
 463          * to the list item itself, you can set "itemtitle" to the value.
 464          * $options is also passed on to makeLink calls
 465          *
 466          * @return string
 467          */
 468         function makeListItem( $key, $item, $options = [] ) {
 469                 if ( isset( $item['links'] ) ) {
 470                         $links = [];
 471                         foreach ( $item['links'] as $linkKey => $link ) {
 472                                 $links[] = $this->makeLink( $linkKey, $link, $options );
 473                         }
 474                         $html = implode( ' ', $links );
 475                 } else {
 476                         $link = $item;
 477                         // These keys are used by makeListItem and shouldn't be passed on to the link
 478                         foreach ( [ 'id', 'class', 'active', 'tag', 'itemtitle' ] as $k ) {
 479                                 unset( $link[$k] );
 480                         }
 481                         if ( isset( $item['id'] ) && !isset( $item['single-id'] ) ) {
 482                                 // The id goes on the <li> not on the <a> for single links
 483                                 // but makeSidebarLink still needs to know what id to use when
 484                                 // generating tooltips and accesskeys.
 485                                 $link['single-id'] = $item['id'];
 486                         }
 487                         if ( isset( $link['link-class'] ) ) {
 488                                 // link-class should be set on the <a> itself,
 489                                 // so pass it in as 'class'
 490                                 $link['class'] = $link['link-class'];
 491                                 unset( $link['link-class'] );
 492                         }
 493                         $html = $this->makeLink( $key, $link, $options );
 494                 }
 495
 496                 $attrs = [];
 497                 foreach ( [ 'id', 'class' ] as $attr ) {
 498                         if ( isset( $item[$attr] ) ) {
 499                                 $attrs[$attr] = $item[$attr];
 500                         }
 501                 }
 502                 if ( isset( $item['active'] ) && $item['active'] ) {
 503                         if ( !isset( $attrs['class'] ) ) {
 504                                 $attrs['class'] = '';
 505                         }
 506                         $attrs['class'] .= ' active';
 507                         $attrs['class'] = trim( $attrs['class'] );
 508                 }
 509                 if ( isset( $item['itemtitle'] ) ) {
 510                         $attrs['title'] = $item['itemtitle'];
 511                 }
 512                 return Html::rawElement( $options['tag'] ?? 'li', $attrs, $html );
 513         }
 514
 515         function makeSearchInput( $attrs = [] ) {
 516                 $realAttrs = [
 517                         'type' => 'search',
 518                         'name' => 'search',
 519                         'placeholder' => wfMessage( 'searchsuggest-search' )->text(),
 520                 ];
 521                 $realAttrs = array_merge( $realAttrs, Linker::tooltipAndAccesskeyAttribs( 'search' ), $attrs );
 522                 return Html::element( 'input', $realAttrs );
 523         }
 524
 525         function makeSearchButton( $mode, $attrs = [] ) {
 526                 switch ( $mode ) {
 527                         case 'go':
 528                         case 'fulltext':
 529                                 $realAttrs = [
 530                                         'type' => 'submit',
 531                                         'name' => $mode,
 532                                         'value' => wfMessage( $mode == 'go' ? 'searcharticle' : 'searchbutton' )->text(),
 533                                 ];
 534                                 $realAttrs = array_merge(
 535                                         $realAttrs,
 536                                         Linker::tooltipAndAccesskeyAttribs( "search-$mode" ),
 537                                         $attrs
 538                                 );
 539                                 return Html::element( 'input', $realAttrs );
 540                         case 'image':
 541                                 $buttonAttrs = [
 542                                         'type' => 'submit',
 543                                         'name' => 'button',
 544                                 ];
 545                                 $buttonAttrs = array_merge(
 546                                         $buttonAttrs,
 547                                         Linker::tooltipAndAccesskeyAttribs( 'search-fulltext' ),
 548                                         $attrs
 549                                 );
 550                                 unset( $buttonAttrs['src'] );
 551                                 unset( $buttonAttrs['alt'] );
 552                                 unset( $buttonAttrs['width'] );
 553                                 unset( $buttonAttrs['height'] );
 554                                 $imgAttrs = [
 555                                         'src' => $attrs['src'],
 556                                         'alt' => $attrs['alt'] ?? wfMessage( 'searchbutton' )->text(),
 557                                         'width' => $attrs['width'] ?? null,
 558                                         'height' => $attrs['height'] ?? null,
 559                                 ];
 560                                 return Html::rawElement( 'button', $buttonAttrs, Html::element( 'img', $imgAttrs ) );
 561                         default:
 562                                 throw new MWException( 'Unknown mode passed to BaseTemplate::makeSearchButton' );
 563                 }
 564         }
 565
 566         /**
 567          * Returns an array of footerlinks trimmed down to only those footer links that
 568          * are valid.
 569          * If you pass "flat" as an option then the returned array will be a flat array
 570          * of footer icons instead of a key/value array of footerlinks arrays broken
 571          * up into categories.
 572          * @param string|null $option
 573          * @return array|mixed
 574          */
 575         function getFooterLinks( $option = null ) {
 576                 $footerlinks = $this->get( 'footerlinks' );
 577
 578                 // Reduce footer links down to only those which are being used
 579                 $validFooterLinks = [];
 580                 foreach ( $footerlinks as $category => $links ) {
 581                         $validFooterLinks[$category] = [];
 582                         foreach ( $links as $link ) {
 583                                 if ( isset( $this->data[$link] ) && $this->data[$link] ) {
 584                                         $validFooterLinks[$category][] = $link;
 585                                 }
 586                         }
 587                         if ( count( $validFooterLinks[$category] ) <= 0 ) {
 588                                 unset( $validFooterLinks[$category] );
 589                         }
 590                 }
 591
 592                 if ( $option == 'flat' ) {
 593                         // fold footerlinks into a single array using a bit of trickery
 594                         $validFooterLinks = array_merge( ...array_values( $validFooterLinks ) );
 595                 }
 596
 597                 return $validFooterLinks;
 598         }
 599
 600         /**
 601          * Returns an array of footer icons filtered down by options relevant to how
 602          * the skin wishes to display them.
 603          * If you pass "icononly" as the option all footer icons which do not have an
 604          * image icon set will be filtered out.
 605          * If you pass "nocopyright" then MediaWiki's copyright icon will not be included
 606          * in the list of footer icons. This is mostly useful for skins which only
 607          * display the text from footericons instead of the images and don't want a
 608          * duplicate copyright statement because footerlinks already rendered one.
 609          * @param string|null $option
 610          * @return array
 611          */
 612         function getFooterIcons( $option = null ) {
 613                 // Generate additional footer icons
 614                 $footericons = $this->get( 'footericons' );
 615
 616                 if ( $option == 'icononly' ) {
 617                         // Unset any icons which don't have an image
 618                         foreach ( $footericons as &$footerIconsBlock ) {
 619                                 foreach ( $footerIconsBlock as $footerIconKey => $footerIcon ) {
 620                                         if ( !is_string( $footerIcon ) && !isset( $footerIcon['src'] ) ) {
 621                                                 unset( $footerIconsBlock[$footerIconKey] );
 622                                         }
 623                                 }
 624                         }
 625                         // Redo removal of any empty blocks
 626                         foreach ( $footericons as $footerIconsKey => &$footerIconsBlock ) {
 627                                 if ( count( $footerIconsBlock ) <= 0 ) {
 628                                         unset( $footericons[$footerIconsKey] );
 629                                 }
 630                         }
 631                 } elseif ( $option == 'nocopyright' ) {
 632                         unset( $footericons['copyright']['copyright'] );
 633                         if ( count( $footericons['copyright'] ) <= 0 ) {
 634                                 unset( $footericons['copyright'] );
 635                         }
 636                 }
 637
 638                 return $footericons;
 639         }
 640
 641         /**
 642          * Renderer for getFooterIcons and getFooterLinks
 643          *
 644          * @param string $iconStyle $option for getFooterIcons: "icononly", "nocopyright"
 645          * @param string $linkStyle $option for getFooterLinks: "flat"
 646          *
 647          * @return string html
 648          * @since 1.29
 649          */
 650         protected function getFooter( $iconStyle = 'icononly', $linkStyle = 'flat' ) {
 651                 $validFooterIcons = $this->getFooterIcons( $iconStyle );
 652                 $validFooterLinks = $this->getFooterLinks( $linkStyle );
 653
 654                 $html = '';
 655
 656                 if ( count( $validFooterIcons ) + count( $validFooterLinks ) > 0 ) {
 657                         $html .= Html::openElement( 'div', [
 658                                 'id' => 'footer-bottom',
 659                                 'role' => 'contentinfo',
 660                                 'lang' => $this->get( 'userlang' ),
 661                                 'dir' => $this->get( 'dir' )
 662                         ] );
 663                         $footerEnd = Html::closeElement( 'div' );
 664                 } else {
 665                         $footerEnd = '';
 666                 }
 667                 foreach ( $validFooterIcons as $blockName => $footerIcons ) {
 668                         $html .= Html::openElement( 'div', [
 669                                 'id' => Sanitizer::escapeIdForAttribute( "f-{$blockName}ico" ),
 670                                 'class' => 'footer-icons'
 671                         ] );
 672                         foreach ( $footerIcons as $icon ) {
 673                                 $html .= $this->getSkin()->makeFooterIcon( $icon );
 674                         }
 675                         $html .= Html::closeElement( 'div' );
 676                 }
 677                 if ( count( $validFooterLinks ) > 0 ) {
 678                         $html .= Html::openElement( 'ul', [ 'id' => 'f-list', 'class' => 'footer-places' ] );
 679                         foreach ( $validFooterLinks as $aLink ) {
 680                                 $html .= Html::rawElement(
 681                                         'li',
 682                                         [ 'id' => Sanitizer::escapeIdForAttribute( $aLink ) ],
 683                                         $this->get( $aLink )
 684                                 );
 685                         }
 686                         $html .= Html::closeElement( 'ul' );
 687                 }
 688
 689                 $html .= $this->getClear() . $footerEnd;
 690
 691                 return $html;
 692         }
 693
 694         /**
 695          * Get a div with the core visualClear class, for clearing floats
 696          *
 697          * @return string html
 698          * @since 1.29
 699          */
 700         protected function getClear() {
 701                 return Html::element( 'div', [ 'class' => 'visualClear' ] );
 702         }
 703
 704         /**
 705          * Get the suggested HTML for page status indicators: icons (or short text snippets) usually
 706          * displayed in the top-right corner of the page, outside of the main content.
 707          *
 708          * Your skin may implement this differently, for example by handling some indicator names
 709          * specially with a different UI. However, it is recommended to use a `<div class="mw-indicator"
 710          * id="mw-indicator-<id>" />` as a wrapper element for each indicator, for better compatibility
 711          * with extensions and user scripts.
 712          *
 713          * The raw data is available in `$this->data['indicators']` as an associative array (keys:
 714          * identifiers, values: contents) internally ordered by keys.
 715          *
 716          * @return string HTML
 717          * @since 1.25
 718          */
 719         public function getIndicators() {
 720                 $out = "<div class=\"mw-indicators mw-body-content\">\n";
 721                 foreach ( $this->data['indicators'] as $id => $content ) {
 722                         $out .= Html::rawElement(
 723                                 'div',
 724                                 [
 725                                         'id' => Sanitizer::escapeIdForAttribute( "mw-indicator-$id" ),
 726                                         'class' => 'mw-indicator',
 727                                 ],
 728                                 $content
 729                         ) . "\n";
 730                 }
 731                 $out .= "</div>\n";
 732                 return $out;
 733         }
 734
 735         /**
 736          * Output getTrail
 737          */
 738         function printTrail() {
 739                 echo $this->getTrail();
 740         }
 741
 742         /**
 743          * Get the basic end-page trail including bottomscripts, reporttime, and
 744          * debug stuff. This should be called right before outputting the closing
 745          * body and html tags.
 746          *
 747          * @return string|WrappedStringList HTML
 748          * @since 1.29
 749          */
 750         public function getTrail() {
 751                 return WrappedString::join( "\n", [
 752                         MWDebug::getDebugHTML( $this->getSkin()->getContext() ),
 753                         $this->get( 'bottomscripts' ),
 754                         $this->get( 'reporttime' )
 755                 ] );
 756         }
 757 }