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 /**
  22  * New base template for a skin's template extended from QuickTemplate
  23  * this class features helper methods that provide common ways of interacting
  24  * with the data stored in the QuickTemplate
  25  */
  26 abstract class BaseTemplate extends QuickTemplate {
  27
  28         /**
  29          * Get a Message object with its context set
  30          *
  31          * @param string $name Message name
  32          * @param mixed $params,... Message params
  33          * @return Message
  34          */
  35         public function getMsg( $name /* ... */ ) {
  36                 return call_user_func_array( [ $this->getSkin(), 'msg' ], func_get_args() );
  37         }
  38
  39         function msg( $str ) {
  40                 echo $this->getMsg( $str )->escaped();
  41         }
  42
  43         function msgHtml( $str ) {
  44                 echo $this->getMsg( $str )->text();
  45         }
  46
  47         function msgWiki( $str ) {
  48                 echo $this->getMsg( $str )->parseAsBlock();
  49         }
  50
  51         /**
  52          * Create an array of common toolbox items from the data in the quicktemplate
  53          * stored by SkinTemplate.
  54          * The resulting array is built according to a format intended to be passed
  55          * through makeListItem to generate the html.
  56          * @return array
  57          */
  58         function getToolbox() {
  59                 $toolbox = [];
  60                 if ( isset( $this->data['nav_urls']['whatlinkshere'] )
  61                         && $this->data['nav_urls']['whatlinkshere']
  62                 ) {
  63                         $toolbox['whatlinkshere'] = $this->data['nav_urls']['whatlinkshere'];
  64                         $toolbox['whatlinkshere']['id'] = 't-whatlinkshere';
  65                 }
  66                 if ( isset( $this->data['nav_urls']['recentchangeslinked'] )
  67                         && $this->data['nav_urls']['recentchangeslinked']
  68                 ) {
  69                         $toolbox['recentchangeslinked'] = $this->data['nav_urls']['recentchangeslinked'];
  70                         $toolbox['recentchangeslinked']['msg'] = 'recentchangeslinked-toolbox';
  71                         $toolbox['recentchangeslinked']['id'] = 't-recentchangeslinked';
  72                         $toolbox['recentchangeslinked']['rel'] = 'nofollow';
  73                 }
  74                 if ( isset( $this->data['feeds'] ) && $this->data['feeds'] ) {
  75                         $toolbox['feeds']['id'] = 'feedlinks';
  76                         $toolbox['feeds']['links'] = [];
  77                         foreach ( $this->data['feeds'] as $key => $feed ) {
  78                                 $toolbox['feeds']['links'][$key] = $feed;
  79                                 $toolbox['feeds']['links'][$key]['id'] = "feed-$key";
  80                                 $toolbox['feeds']['links'][$key]['rel'] = 'alternate';
  81                                 $toolbox['feeds']['links'][$key]['type'] = "application/{$key}+xml";
  82                                 $toolbox['feeds']['links'][$key]['class'] = 'feedlink';
  83                         }
  84                 }
  85                 foreach ( [ 'contributions', 'log', 'blockip', 'emailuser',
  86                         'userrights', 'upload', 'specialpages' ] as $special
  87                 ) {
  88                         if ( isset( $this->data['nav_urls'][$special] ) && $this->data['nav_urls'][$special] ) {
  89                                 $toolbox[$special] = $this->data['nav_urls'][$special];
  90                                 $toolbox[$special]['id'] = "t-$special";
  91                         }
  92                 }
  93                 if ( isset( $this->data['nav_urls']['print'] ) && $this->data['nav_urls']['print'] ) {
  94                         $toolbox['print'] = $this->data['nav_urls']['print'];
  95                         $toolbox['print']['id'] = 't-print';
  96                         $toolbox['print']['rel'] = 'alternate';
  97                         $toolbox['print']['msg'] = 'printableversion';
  98                 }
  99                 if ( isset( $this->data['nav_urls']['permalink'] ) && $this->data['nav_urls']['permalink'] ) {
 100                         $toolbox['permalink'] = $this->data['nav_urls']['permalink'];
 101                         if ( $toolbox['permalink']['href'] === '' ) {
 102                                 unset( $toolbox['permalink']['href'] );
 103                                 $toolbox['ispermalink']['tooltiponly'] = true;
 104                                 $toolbox['ispermalink']['id'] = 't-ispermalink';
 105                                 $toolbox['ispermalink']['msg'] = 'permalink';
 106                         } else {
 107                                 $toolbox['permalink']['id'] = 't-permalink';
 108                         }
 109                 }
 110                 if ( isset( $this->data['nav_urls']['info'] ) && $this->data['nav_urls']['info'] ) {
 111                         $toolbox['info'] = $this->data['nav_urls']['info'];
 112                         $toolbox['info']['id'] = 't-info';
 113                 }
 114
 115                 // Avoid PHP 7.1 warning from passing $this by reference
 116                 $template = $this;
 117                 Hooks::run( 'BaseTemplateToolbox', [ &$template, &$toolbox ] );
 118                 return $toolbox;
 119         }
 120
 121         /**
 122          * Create an array of personal tools items from the data in the quicktemplate
 123          * stored by SkinTemplate.
 124          * The resulting array is built according to a format intended to be passed
 125          * through makeListItem to generate the html.
 126          * This is in reality the same list as already stored in personal_urls
 127          * however it is reformatted so that you can just pass the individual items
 128          * to makeListItem instead of hardcoding the element creation boilerplate.
 129          * @return array
 130          */
 131         function getPersonalTools() {
 132                 $personal_tools = [];
 133                 foreach ( $this->get( 'personal_urls' ) as $key => $plink ) {
 134                         # The class on a personal_urls item is meant to go on the <a> instead
 135                         # of the <li> so we have to use a single item "links" array instead
 136                         # of using most of the personal_url's keys directly.
 137                         $ptool = [
 138                                 'links' => [
 139                                         [ 'single-id' => "pt-$key" ],
 140                                 ],
 141                                 'id' => "pt-$key",
 142                         ];
 143                         if ( isset( $plink['active'] ) ) {
 144                                 $ptool['active'] = $plink['active'];
 145                         }
 146                         foreach ( [ 'href', 'class', 'text', 'dir', 'data', 'exists' ] as $k ) {
 147                                 if ( isset( $plink[$k] ) ) {
 148                                         $ptool['links'][0][$k] = $plink[$k];
 149                                 }
 150                         }
 151                         $personal_tools[$key] = $ptool;
 152                 }
 153                 return $personal_tools;
 154         }
 155
 156         function getSidebar( $options = [] ) {
 157                 // Force the rendering of the following portals
 158                 $sidebar = $this->data['sidebar'];
 159                 if ( !isset( $sidebar['SEARCH'] ) ) {
 160                         $sidebar['SEARCH'] = true;
 161                 }
 162                 if ( !isset( $sidebar['TOOLBOX'] ) ) {
 163                         $sidebar['TOOLBOX'] = true;
 164                 }
 165                 if ( !isset( $sidebar['LANGUAGES'] ) ) {
 166                         $sidebar['LANGUAGES'] = true;
 167                 }
 168
 169                 if ( !isset( $options['search'] ) || $options['search'] !== true ) {
 170                         unset( $sidebar['SEARCH'] );
 171                 }
 172                 if ( isset( $options['toolbox'] ) && $options['toolbox'] === false ) {
 173                         unset( $sidebar['TOOLBOX'] );
 174                 }
 175                 if ( isset( $options['languages'] ) && $options['languages'] === false ) {
 176                         unset( $sidebar['LANGUAGES'] );
 177                 }
 178
 179                 $boxes = [];
 180                 foreach ( $sidebar as $boxName => $content ) {
 181                         if ( $content === false ) {
 182                                 continue;
 183                         }
 184                         switch ( $boxName ) {
 185                                 case 'SEARCH':
 186                                         // Search is a special case, skins should custom implement this
 187                                         $boxes[$boxName] = [
 188                                                 'id' => 'p-search',
 189                                                 'header' => $this->getMsg( 'search' )->text(),
 190                                                 'generated' => false,
 191                                                 'content' => true,
 192                                         ];
 193                                         break;
 194                                 case 'TOOLBOX':
 195                                         $msgObj = $this->getMsg( 'toolbox' );
 196                                         $boxes[$boxName] = [
 197                                                 'id' => 'p-tb',
 198                                                 'header' => $msgObj->exists() ? $msgObj->text() : 'toolbox',
 199                                                 'generated' => false,
 200                                                 'content' => $this->getToolbox(),
 201                                         ];
 202                                         break;
 203                                 case 'LANGUAGES':
 204                                         if ( $this->data['language_urls'] !== false ) {
 205                                                 $msgObj = $this->getMsg( 'otherlanguages' );
 206                                                 $boxes[$boxName] = [
 207                                                         'id' => 'p-lang',
 208                                                         'header' => $msgObj->exists() ? $msgObj->text() : 'otherlanguages',
 209                                                         'generated' => false,
 210                                                         'content' => $this->data['language_urls'] ?: [],
 211                                                 ];
 212                                         }
 213                                         break;
 214                                 default:
 215                                         $msgObj = $this->getMsg( $boxName );
 216                                         $boxes[$boxName] = [
 217                                                 'id' => "p-$boxName",
 218                                                 'header' => $msgObj->exists() ? $msgObj->text() : $boxName,
 219                                                 'generated' => true,
 220                                                 'content' => $content,
 221                                         ];
 222                                         break;
 223                         }
 224                 }
 225
 226                 // HACK: Compatibility with extensions still using SkinTemplateToolboxEnd
 227                 $hookContents = null;
 228                 if ( isset( $boxes['TOOLBOX'] ) ) {
 229                         ob_start();
 230                         // We pass an extra 'true' at the end so extensions using BaseTemplateToolbox
 231                         // can abort and avoid outputting double toolbox links
 232                         // Avoid PHP 7.1 warning from passing $this by reference
 233                         $template = $this;
 234                         Hooks::run( 'SkinTemplateToolboxEnd', [ &$template, true ] );
 235                         $hookContents = ob_get_contents();
 236                         ob_end_clean();
 237                         if ( !trim( $hookContents ) ) {
 238                                 $hookContents = null;
 239                         }
 240                 }
 241                 // END hack
 242
 243                 if ( isset( $options['htmlOnly'] ) && $options['htmlOnly'] === true ) {
 244                         foreach ( $boxes as $boxName => $box ) {
 245                                 if ( is_array( $box['content'] ) ) {
 246                                         $content = '<ul>';
 247                                         foreach ( $box['content'] as $key => $val ) {
 248                                                 $content .= "\n " . $this->makeListItem( $key, $val );
 249                                         }
 250                                         // HACK, shove the toolbox end onto the toolbox if we're rendering itself
 251                                         if ( $hookContents ) {
 252                                                 $content .= "\n $hookContents";
 253                                         }
 254                                         // END hack
 255                                         $content .= "\n</ul>\n";
 256                                         $boxes[$boxName]['content'] = $content;
 257                                 }
 258                         }
 259                 } else {
 260                         if ( $hookContents ) {
 261                                 $boxes['TOOLBOXEND'] = [
 262                                         'id' => 'p-toolboxend',
 263                                         'header' => $boxes['TOOLBOX']['header'],
 264                                         'generated' => false,
 265                                         'content' => "<ul>{$hookContents}</ul>",
 266                                 ];
 267                                 // HACK: Make sure that TOOLBOXEND is sorted next to TOOLBOX
 268                                 $boxes2 = [];
 269                                 foreach ( $boxes as $key => $box ) {
 270                                         if ( $key === 'TOOLBOXEND' ) {
 271                                                 continue;
 272                                         }
 273                                         $boxes2[$key] = $box;
 274                                         if ( $key === 'TOOLBOX' ) {
 275                                                 $boxes2['TOOLBOXEND'] = $boxes['TOOLBOXEND'];
 276                                         }
 277                                 }
 278                                 $boxes = $boxes2;
 279                                 // END hack
 280                         }
 281                 }
 282
 283                 return $boxes;
 284         }
 285
 286         /**
 287          * @param string $name
 288          */
 289         protected function renderAfterPortlet( $name ) {
 290                 echo $this->getAfterPortlet( $name );
 291         }
 292
 293         /**
 294          * Allows extensions to hook into known portlets and add stuff to them
 295          *
 296          * @param string $name
 297          *
 298          * @return string html
 299          * @since 1.29
 300          */
 301         protected function getAfterPortlet( $name ) {
 302                 $html = '';
 303                 $content = '';
 304                 Hooks::run( 'BaseTemplateAfterPortlet', [ $this, $name, &$content ] );
 305
 306                 if ( $content !== '' ) {
 307                         $html = Html::rawElement(
 308                                 'div',
 309                                 [ 'class' => [ 'after-portlet', 'after-portlet-' . $name ] ],
 310                                 $content
 311                         );
 312                 }
 313
 314                 return $html;
 315         }
 316
 317         /**
 318          * Makes a link, usually used by makeListItem to generate a link for an item
 319          * in a list used in navigation lists, portlets, portals, sidebars, etc...
 320          *
 321          * @param string $key Usually a key from the list you are generating this
 322          * link from.
 323          * @param array $item Contains some of a specific set of keys.
 324          *
 325          * The text of the link will be generated either from the contents of the
 326          * "text" key in the $item array, if a "msg" key is present a message by
 327          * that name will be used, and if neither of those are set the $key will be
 328          * used as a message name.
 329          *
 330          * If a "href" key is not present makeLink will just output htmlescaped text.
 331          * The "href", "id", "class", "rel", and "type" keys are used as attributes
 332          * for the link if present.
 333          *
 334          * If an "id" or "single-id" (if you don't want the actual id to be output
 335          * on the link) is present it will be used to generate a tooltip and
 336          * accesskey for the link.
 337          *
 338          * The keys "context" and "primary" are ignored; these keys are used
 339          * internally by skins and are not supposed to be included in the HTML
 340          * output.
 341          *
 342          * If you don't want an accesskey, set $item['tooltiponly'] = true;
 343          *
 344          * If a "data" key is present, it must be an array, where the keys represent
 345          * the data-xxx properties with their provided values. For example,
 346          *     $item['data'] = [
 347          *       'foo' => 1,
 348          *       'bar' => 'baz',
 349          *     ];
 350          * will render as element properties:
 351          *     data-foo='1' data-bar='baz'
 352          *
 353          * @param array $options Can be used to affect the output of a link.
 354          * Possible options are:
 355          *   - 'text-wrapper' key to specify a list of elements to wrap the text of
 356          *   a link in. This should be an array of arrays containing a 'tag' and
 357          *   optionally an 'attributes' key. If you only have one element you don't
 358          *   need to wrap it in another array. eg: To use <a><span>...</span></a>
 359          *   in all links use [ 'text-wrapper' => [ 'tag' => 'span' ] ]
 360          *   for your options.
 361          *   - 'link-class' key can be used to specify additional classes to apply
 362          *   to all links.
 363          *   - 'link-fallback' can be used to specify a tag to use instead of "<a>"
 364          *   if there is no link. eg: If you specify 'link-fallback' => 'span' than
 365          *   any non-link will output a "<span>" instead of just text.
 366          *
 367          * @return string
 368          */
 369         function makeLink( $key, $item, $options = [] ) {
 370                 if ( isset( $item['text'] ) ) {
 371                         $text = $item['text'];
 372                 } else {
 373                         $text = wfMessage( isset( $item['msg'] ) ? $item['msg'] : $key )->text();
 374                 }
 375
 376                 $html = htmlspecialchars( $text );
 377
 378                 if ( isset( $options['text-wrapper'] ) ) {
 379                         $wrapper = $options['text-wrapper'];
 380                         if ( isset( $wrapper['tag'] ) ) {
 381                                 $wrapper = [ $wrapper ];
 382                         }
 383                         while ( count( $wrapper ) > 0 ) {
 384                                 $element = array_pop( $wrapper );
 385                                 $html = Html::rawElement( $element['tag'], isset( $element['attributes'] )
 386                                         ? $element['attributes']
 387                                         : null, $html );
 388                         }
 389                 }
 390
 391                 if ( isset( $item['href'] ) || isset( $options['link-fallback'] ) ) {
 392                         $attrs = $item;
 393                         foreach ( [ 'single-id', 'text', 'msg', 'tooltiponly', 'context', 'primary',
 394                                 'tooltip-params', 'exists' ] as $k ) {
 395                                 unset( $attrs[$k] );
 396                         }
 397
 398                         if ( isset( $attrs['data'] ) ) {
 399                                 foreach ( $attrs['data'] as $key => $value ) {
 400                                         $attrs[ 'data-' . $key ] = $value;
 401                                 }
 402                                 unset( $attrs[ 'data' ] );
 403                         }
 404
 405                         if ( isset( $item['id'] ) && !isset( $item['single-id'] ) ) {
 406                                 $item['single-id'] = $item['id'];
 407                         }
 408
 409                         $tooltipParams = [];
 410                         if ( isset( $item['tooltip-params'] ) ) {
 411                                 $tooltipParams = $item['tooltip-params'];
 412                         }
 413
 414                         if ( isset( $item['single-id'] ) ) {
 415                                 $tooltipOption = isset( $item['exists'] ) && $item['exists'] === false ? 'nonexisting' : null;
 416
 417                                 if ( isset( $item['tooltiponly'] ) && $item['tooltiponly'] ) {
 418                                         $title = Linker::titleAttrib( $item['single-id'], $tooltipOption, $tooltipParams );
 419                                         if ( $title !== false ) {
 420                                                 $attrs['title'] = $title;
 421                                         }
 422                                 } else {
 423                                         $tip = Linker::tooltipAndAccesskeyAttribs(
 424                                                 $item['single-id'],
 425                                                 $tooltipParams,
 426                                                 $tooltipOption
 427                                         );
 428                                         if ( isset( $tip['title'] ) && $tip['title'] !== false ) {
 429                                                 $attrs['title'] = $tip['title'];
 430                                         }
 431                                         if ( isset( $tip['accesskey'] ) && $tip['accesskey'] !== false ) {
 432                                                 $attrs['accesskey'] = $tip['accesskey'];
 433                                         }
 434                                 }
 435                         }
 436                         if ( isset( $options['link-class'] ) ) {
 437                                 if ( isset( $attrs['class'] ) ) {
 438                                         $attrs['class'] .= " {$options['link-class']}";
 439                                 } else {
 440                                         $attrs['class'] = $options['link-class'];
 441                                 }
 442                         }
 443                         $html = Html::rawElement( isset( $attrs['href'] )
 444                                 ? 'a'
 445                                 : $options['link-fallback'], $attrs, $html );
 446                 }
 447
 448                 return $html;
 449         }
 450
 451         /**
 452          * Generates a list item for a navigation, portlet, portal, sidebar... list
 453          *
 454          * @param string $key Usually a key from the list you are generating this link from.
 455          * @param array $item Array of list item data containing some of a specific set of keys.
 456          * The "id", "class" and "itemtitle" keys will be used as attributes for the list item,
 457          * if "active" contains a value of true a "active" class will also be appended to class.
 458          *
 459          * @param array $options
 460          *
 461          * If you want something other than a "<li>" you can pass a tag name such as
 462          * "tag" => "span" in the $options array to change the tag used.
 463          * link/content data for the list item may come in one of two forms
 464          * A "links" key may be used, in which case it should contain an array with
 465          * a list of links to include inside the list item, see makeLink for the
 466          * format of individual links array items.
 467          *
 468          * Otherwise the relevant keys from the list item $item array will be passed
 469          * to makeLink instead. Note however that "id" and "class" are used by the
 470          * list item directly so they will not be passed to makeLink
 471          * (however the link will still support a tooltip and accesskey from it)
 472          * If you need an id or class on a single link you should include a "links"
 473          * array with just one link item inside of it. You can also set "link-class" in
 474          * $item to set a class on the link itself. If you want to add a title
 475          * to the list item itself, you can set "itemtitle" to the value.
 476          * $options is also passed on to makeLink calls
 477          *
 478          * @return string
 479          */
 480         function makeListItem( $key, $item, $options = [] ) {
 481                 if ( isset( $item['links'] ) ) {
 482                         $links = [];
 483                         foreach ( $item['links'] as $linkKey => $link ) {
 484                                 $links[] = $this->makeLink( $linkKey, $link, $options );
 485                         }
 486                         $html = implode( ' ', $links );
 487                 } else {
 488                         $link = $item;
 489                         // These keys are used by makeListItem and shouldn't be passed on to the link
 490                         foreach ( [ 'id', 'class', 'active', 'tag', 'itemtitle' ] as $k ) {
 491                                 unset( $link[$k] );
 492                         }
 493                         if ( isset( $item['id'] ) && !isset( $item['single-id'] ) ) {
 494                                 // The id goes on the <li> not on the <a> for single links
 495                                 // but makeSidebarLink still needs to know what id to use when
 496                                 // generating tooltips and accesskeys.
 497                                 $link['single-id'] = $item['id'];
 498                         }
 499                         if ( isset( $link['link-class'] ) ) {
 500                                 // link-class should be set on the <a> itself,
 501                                 // so pass it in as 'class'
 502                                 $link['class'] = $link['link-class'];
 503                                 unset( $link['link-class'] );
 504                         }
 505                         $html = $this->makeLink( $key, $link, $options );
 506                 }
 507
 508                 $attrs = [];
 509                 foreach ( [ 'id', 'class' ] as $attr ) {
 510                         if ( isset( $item[$attr] ) ) {
 511                                 $attrs[$attr] = $item[$attr];
 512                         }
 513                 }
 514                 if ( isset( $item['active'] ) && $item['active'] ) {
 515                         if ( !isset( $attrs['class'] ) ) {
 516                                 $attrs['class'] = '';
 517                         }
 518                         $attrs['class'] .= ' active';
 519                         $attrs['class'] = trim( $attrs['class'] );
 520                 }
 521                 if ( isset( $item['itemtitle'] ) ) {
 522                         $attrs['title'] = $item['itemtitle'];
 523                 }
 524                 return Html::rawElement( isset( $options['tag'] ) ? $options['tag'] : 'li', $attrs, $html );
 525         }
 526
 527         function makeSearchInput( $attrs = [] ) {
 528                 $realAttrs = [
 529                         'type' => 'search',
 530                         'name' => 'search',
 531                         'placeholder' => wfMessage( 'searchsuggest-search' )->text(),
 532                 ];
 533                 $realAttrs = array_merge( $realAttrs, Linker::tooltipAndAccesskeyAttribs( 'search' ), $attrs );
 534                 return Html::element( 'input', $realAttrs );
 535         }
 536
 537         function makeSearchButton( $mode, $attrs = [] ) {
 538                 switch ( $mode ) {
 539                         case 'go':
 540                         case 'fulltext':
 541                                 $realAttrs = [
 542                                         'type' => 'submit',
 543                                         'name' => $mode,
 544                                         'value' => wfMessage( $mode == 'go' ? 'searcharticle' : 'searchbutton' )->text(),
 545                                 ];
 546                                 $realAttrs = array_merge(
 547                                         $realAttrs,
 548                                         Linker::tooltipAndAccesskeyAttribs( "search-$mode" ),
 549                                         $attrs
 550                                 );
 551                                 return Html::element( 'input', $realAttrs );
 552                         case 'image':
 553                                 $buttonAttrs = [
 554                                         'type' => 'submit',
 555                                         'name' => 'button',
 556                                 ];
 557                                 $buttonAttrs = array_merge(
 558                                         $buttonAttrs,
 559                                         Linker::tooltipAndAccesskeyAttribs( 'search-fulltext' ),
 560                                         $attrs
 561                                 );
 562                                 unset( $buttonAttrs['src'] );
 563                                 unset( $buttonAttrs['alt'] );
 564                                 unset( $buttonAttrs['width'] );
 565                                 unset( $buttonAttrs['height'] );
 566                                 $imgAttrs = [
 567                                         'src' => $attrs['src'],
 568                                         'alt' => isset( $attrs['alt'] )
 569                                                 ? $attrs['alt']
 570                                                 : wfMessage( 'searchbutton' )->text(),
 571                                         'width' => isset( $attrs['width'] ) ? $attrs['width'] : null,
 572                                         'height' => isset( $attrs['height'] ) ? $attrs['height'] : null,
 573                                 ];
 574                                 return Html::rawElement( 'button', $buttonAttrs, Html::element( 'img', $imgAttrs ) );
 575                         default:
 576                                 throw new MWException( 'Unknown mode passed to BaseTemplate::makeSearchButton' );
 577                 }
 578         }
 579
 580         /**
 581          * Returns an array of footerlinks trimmed down to only those footer links that
 582          * are valid.
 583          * If you pass "flat" as an option then the returned array will be a flat array
 584          * of footer icons instead of a key/value array of footerlinks arrays broken
 585          * up into categories.
 586          * @param string $option
 587          * @return array|mixed
 588          */
 589         function getFooterLinks( $option = null ) {
 590                 $footerlinks = $this->get( 'footerlinks' );
 591
 592                 // Reduce footer links down to only those which are being used
 593                 $validFooterLinks = [];
 594                 foreach ( $footerlinks as $category => $links ) {
 595                         $validFooterLinks[$category] = [];
 596                         foreach ( $links as $link ) {
 597                                 if ( isset( $this->data[$link] ) && $this->data[$link] ) {
 598                                         $validFooterLinks[$category][] = $link;
 599                                 }
 600                         }
 601                         if ( count( $validFooterLinks[$category] ) <= 0 ) {
 602                                 unset( $validFooterLinks[$category] );
 603                         }
 604                 }
 605
 606                 if ( $option == 'flat' ) {
 607                         // fold footerlinks into a single array using a bit of trickery
 608                         $validFooterLinks = call_user_func_array(
 609                                 'array_merge',
 610                                 array_values( $validFooterLinks )
 611                         );
 612                 }
 613
 614                 return $validFooterLinks;
 615         }
 616
 617         /**
 618          * Returns an array of footer icons filtered down by options relevant to how
 619          * the skin wishes to display them.
 620          * If you pass "icononly" as the option all footer icons which do not have an
 621          * image icon set will be filtered out.
 622          * If you pass "nocopyright" then MediaWiki's copyright icon will not be included
 623          * in the list of footer icons. This is mostly useful for skins which only
 624          * display the text from footericons instead of the images and don't want a
 625          * duplicate copyright statement because footerlinks already rendered one.
 626          * @param string $option
 627          * @return array
 628          */
 629         function getFooterIcons( $option = null ) {
 630                 // Generate additional footer icons
 631                 $footericons = $this->get( 'footericons' );
 632
 633                 if ( $option == 'icononly' ) {
 634                         // Unset any icons which don't have an image
 635                         foreach ( $footericons as &$footerIconsBlock ) {
 636                                 foreach ( $footerIconsBlock as $footerIconKey => $footerIcon ) {
 637                                         if ( !is_string( $footerIcon ) && !isset( $footerIcon['src'] ) ) {
 638                                                 unset( $footerIconsBlock[$footerIconKey] );
 639                                         }
 640                                 }
 641                         }
 642                         // Redo removal of any empty blocks
 643                         foreach ( $footericons as $footerIconsKey => &$footerIconsBlock ) {
 644                                 if ( count( $footerIconsBlock ) <= 0 ) {
 645                                         unset( $footericons[$footerIconsKey] );
 646                                 }
 647                         }
 648                 } elseif ( $option == 'nocopyright' ) {
 649                         unset( $footericons['copyright']['copyright'] );
 650                         if ( count( $footericons['copyright'] ) <= 0 ) {
 651                                 unset( $footericons['copyright'] );
 652                         }
 653                 }
 654
 655                 return $footericons;
 656         }
 657
 658         /**
 659          * Renderer for getFooterIcons and getFooterLinks
 660          *
 661          * @param string $iconStyle $option for getFooterIcons: "icononly", "nocopyright"
 662          * @param string $linkStyle $option for getFooterLinks: "flat"
 663          *
 664          * @return string html
 665          * @since 1.29
 666          */
 667         protected function getFooter( $iconStyle = 'icononly', $linkStyle = 'flat' ) {
 668                 $validFooterIcons = $this->getFooterIcons( $iconStyle );
 669                 $validFooterLinks = $this->getFooterLinks( $linkStyle );
 670
 671                 $html = '';
 672
 673                 if ( count( $validFooterIcons ) + count( $validFooterLinks ) > 0 ) {
 674                         $html .= Html::openElement( 'div', [
 675                                 'id' => 'footer-bottom',
 676                                 'role' => 'contentinfo',
 677                                 'lang' => $this->get( 'userlang' ),
 678                                 'dir' => $this->get( 'dir' )
 679                         ] );
 680                         $footerEnd = Html::closeElement( 'div' );
 681                 } else {
 682                         $footerEnd = '';
 683                 }
 684                 foreach ( $validFooterIcons as $blockName => $footerIcons ) {
 685                         $html .= Html::openElement( 'div', [
 686                                 'id' => Sanitizer::escapeIdForAttribute( "f-{$blockName}ico" ),
 687                                 'class' => 'footer-icons'
 688                         ] );
 689                         foreach ( $footerIcons as $icon ) {
 690                                 $html .= $this->getSkin()->makeFooterIcon( $icon );
 691                         }
 692                         $html .= Html::closeElement( 'div' );
 693                 }
 694                 if ( count( $validFooterLinks ) > 0 ) {
 695                         $html .= Html::openElement( 'ul', [ 'id' => 'f-list', 'class' => 'footer-places' ] );
 696                         foreach ( $validFooterLinks as $aLink ) {
 697                                 $html .= Html::rawElement(
 698                                         'li',
 699                                         [ 'id' => Sanitizer::escapeIdForAttribute( $aLink ) ],
 700                                         $this->get( $aLink )
 701                                 );
 702                         }
 703                         $html .= Html::closeElement( 'ul' );
 704                 }
 705
 706                 $html .= $this->getClear() . $footerEnd;
 707
 708                 return $html;
 709         }
 710
 711         /**
 712          * Get a div with the core visualClear class, for clearing floats
 713          *
 714          * @return string html
 715          * @since 1.29
 716          */
 717         protected function getClear() {
 718                 return Html::element( 'div', [ 'class' => 'visualClear' ] );
 719         }
 720
 721         /**
 722          * Get the suggested HTML for page status indicators: icons (or short text snippets) usually
 723          * displayed in the top-right corner of the page, outside of the main content.
 724          *
 725          * Your skin may implement this differently, for example by handling some indicator names
 726          * specially with a different UI. However, it is recommended to use a `<div class="mw-indicator"
 727          * id="mw-indicator-<id>" />` as a wrapper element for each indicator, for better compatibility
 728          * with extensions and user scripts.
 729          *
 730          * The raw data is available in `$this->data['indicators']` as an associative array (keys:
 731          * identifiers, values: contents) internally ordered by keys.
 732          *
 733          * @return string HTML
 734          * @since 1.25
 735          */
 736         public function getIndicators() {
 737                 $out = "<div class=\"mw-indicators mw-body-content\">\n";
 738                 foreach ( $this->data['indicators'] as $id => $content ) {
 739                         $out .= Html::rawElement(
 740                                 'div',
 741                                 [
 742                                         'id' => Sanitizer::escapeIdForAttribute( "mw-indicator-$id" ),
 743                                         'class' => 'mw-indicator',
 744                                 ],
 745                                 $content
 746                         ) . "\n";
 747                 }
 748                 $out .= "</div>\n";
 749                 return $out;
 750         }
 751
 752         /**
 753          * Output getTrail
 754          */
 755         function printTrail() {
 756                 echo $this->getTrail();
 757         }
 758
 759         /**
 760          * Get the basic end-page trail including bottomscripts, reporttime, and
 761          * debug stuff. This should be called right before outputting the closing
 762          * body and html tags.
 763          *
 764          * @return string
 765          * @since 1.29
 766          */
 767         function getTrail() {
 768                 $html = MWDebug::getDebugHTML( $this->getSkin()->getContext() );
 769                 $html .= $this->get( 'bottomscripts' );
 770                 $html .= $this->get( 'reporttime' );
 771
 772                 return $html;
 773         }
 774 }