includes/specials/SpecialWatchlist.php

   1 <?php
   2 /**
   3  * Implements Special:Watchlist
   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  */
  23
  24 /**
  25  * A special page that lists last changes made to the wiki,
  26  * limited to user-defined list of titles.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialWatchlist extends ChangesListSpecialPage {
  31         /**
  32          * Constructor
  33          */
  34         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  35                 parent::__construct( $page, $restriction );
  36         }
  37
  38         /**
  39          * Main execution point
  40          *
  41          * @param string $subpage
  42          */
  43         function execute( $subpage ) {
  44                 global $wgEnotifWatchlist, $wgShowUpdatedMarker;
  45
  46                 // Anons don't get a watchlist
  47                 $this->requireLogin( 'watchlistanontext' );
  48
  49                 $output = $this->getOutput();
  50                 $request = $this->getRequest();
  51
  52                 $mode = SpecialEditWatchlist::getMode( $request, $subpage );
  53                 if ( $mode !== false ) {
  54                         if ( $mode === SpecialEditWatchlist::EDIT_RAW ) {
  55                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'raw' );
  56                         } else {
  57                                 $title = SpecialPage::getTitleFor( 'EditWatchlist' );
  58                         }
  59
  60                         $output->redirect( $title->getLocalURL() );
  61                         return;
  62                 }
  63
  64                 $this->checkPermissions();
  65
  66                 $user = $this->getUser();
  67                 $opts = $this->getOptions();
  68
  69                 if ( ( $wgEnotifWatchlist || $wgShowUpdatedMarker ) && $request->getVal( 'reset' ) &&
  70                         $request->wasPosted() )
  71                 {
  72                         $user->clearAllNotifications();
  73                         $output->redirect( $this->getPageTitle()->getFullURL( $opts->getChangedValues() ) );
  74                         return;
  75                 }
  76
  77                 parent::execute( $subpage );
  78         }
  79
  80         /**
  81          * Get a FormOptions object containing the default options
  82          *
  83          * @return FormOptions
  84          */
  85         public function getDefaultOptions() {
  86                 $opts = parent::getDefaultOptions();
  87                 $user = $this->getUser();
  88
  89                 $opts->add( 'days', $user->getOption( 'watchlistdays' ), FormOptions::FLOAT );
  90
  91                 $opts->add( 'hideminor', $user->getBoolOption( 'watchlisthideminor' ) );
  92                 $opts->add( 'hidebots', $user->getBoolOption( 'watchlisthidebots' ) );
  93                 $opts->add( 'hideanons', $user->getBoolOption( 'watchlisthideanons' ) );
  94                 $opts->add( 'hideliu', $user->getBoolOption( 'watchlisthideliu' ) );
  95                 $opts->add( 'hidepatrolled', $user->getBoolOption( 'watchlisthidepatrolled' ) );
  96                 $opts->add( 'hidemyself', $user->getBoolOption( 'watchlisthideown' ) );
  97
  98                 $opts->add( 'extended', $user->getBoolOption( 'extendwatchlist' ) );
  99
 100                 return $opts;
 101         }
 102
 103         /**
 104          * Get custom show/hide filters
 105          *
 106          * @return array Map of filter URL param names to properties (msg/default)
 107          */
 108         protected function getCustomFilters() {
 109                 if ( $this->customFilters === null ) {
 110                         $this->customFilters = array();
 111                         wfRunHooks( 'SpecialWatchlistFilters', array( $this, &$this->customFilters ) );
 112                 }
 113
 114                 return $this->customFilters;
 115         }
 116
 117         /**
 118          * Fetch values for a FormOptions object from the WebRequest associated with this instance.
 119          *
 120          * Maps old pre-1.23 request parameters Watchlist used to use (different from Recentchanges' ones)
 121          * to the current ones.
 122          *
 123          * @param FormOptions $parameters
 124          * @return FormOptions
 125          */
 126         protected function fetchOptionsFromRequest( $opts ) {
 127                 static $compatibilityMap = array(
 128                         'hideMinor' => 'hideminor',
 129                         'hideBots' => 'hidebots',
 130                         'hideAnons' => 'hideanons',
 131                         'hideLiu' => 'hideliu',
 132                         'hidePatrolled' => 'hidepatrolled',
 133                         'hideOwn' => 'hidemyself',
 134                 );
 135
 136                 $params = $this->getRequest()->getValues();
 137                 foreach ( $compatibilityMap as $from => $to ) {
 138                         if ( isset( $params[$from] ) ) {
 139                                 $params[$to] = $params[$from];
 140                                 unset( $params[$from] );
 141                         }
 142                 }
 143
 144                 // Not the prettiest way to achieve this… FormOptions internally depends on data sanitization
 145                 // methods defined on WebRequest and removing this dependency would cause some code duplication.
 146                 $request = new DerivativeRequest( $this->getRequest(), $params );
 147                 $opts->fetchValuesFromRequest( $request );
 148                 return $opts;
 149         }
 150
 151         /**
 152          * Return an array of conditions depending of options set in $opts
 153          *
 154          * @param FormOptions $opts
 155          * @return array
 156          */
 157         public function buildMainQueryConds( FormOptions $opts ) {
 158                 $dbr = $this->getDB();
 159                 $conds = parent::buildMainQueryConds( $opts );
 160
 161                 // Calculate cutoff
 162                 if ( $opts['days'] > 0 ) {
 163                         $conds[] = 'rc_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( time() - intval( $opts['days'] * 86400 ) ) );
 164                 }
 165
 166                 return $conds;
 167         }
 168
 169         /**
 170          * Process the query
 171          *
 172          * @param array $conds
 173          * @param FormOptions $opts
 174          * @return bool|ResultWrapper Result or false (for Recentchangeslinked only)
 175          */
 176         public function doMainQuery( $conds, $opts ) {
 177                 global $wgShowUpdatedMarker;
 178
 179                 $dbr = $this->getDB();
 180                 $user = $this->getUser();
 181                 # Toggle watchlist content (all recent edits or just the latest)
 182                 if ( $opts['extended'] ) {
 183                         $limitWatchlist = $user->getIntOption( 'wllimit' );
 184                         $usePage = false;
 185                 } else {
 186                         # Top log Ids for a page are not stored
 187                         $nonRevisionTypes = array( RC_LOG );
 188                         wfRunHooks( 'SpecialWatchlistGetNonRevisionTypes', array( &$nonRevisionTypes ) );
 189                         if ( $nonRevisionTypes ) {
 190                                 $conds[] = $dbr->makeList(
 191                                         array(
 192                                                 'rc_this_oldid=page_latest',
 193                                                 'rc_type' => $nonRevisionTypes,
 194                                         ),
 195                                         LIST_OR
 196                                 );
 197                         }
 198                         $limitWatchlist = 0;
 199                         $usePage = true;
 200                 }
 201
 202                 $tables = array( 'recentchanges', 'watchlist' );
 203                 $fields = RecentChange::selectFields();
 204                 $join_conds = array(
 205                         'watchlist' => array(
 206                                 'INNER JOIN',
 207                                 array(
 208                                         'wl_user' => $user->getId(),
 209                                         'wl_namespace=rc_namespace',
 210                                         'wl_title=rc_title'
 211                                 ),
 212                         ),
 213                 );
 214                 $options = array( 'ORDER BY' => 'rc_timestamp DESC' );
 215                 if ( $wgShowUpdatedMarker ) {
 216                         $fields[] = 'wl_notificationtimestamp';
 217                 }
 218                 if ( $limitWatchlist ) {
 219                         $options['LIMIT'] = $limitWatchlist;
 220                 }
 221
 222                 $rollbacker = $user->isAllowed( 'rollback' );
 223                 if ( $usePage || $rollbacker ) {
 224                         $tables[] = 'page';
 225                         $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
 226                         if ( $rollbacker ) {
 227                                 $fields[] = 'page_latest';
 228                         }
 229                 }
 230
 231                 // Log entries with DELETED_ACTION must not show up unless the user has
 232                 // the necessary rights.
 233                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 234                         $bitmask = LogPage::DELETED_ACTION;
 235                 } elseif ( !$user->isAllowed( 'suppressrevision' ) ) {
 236                         $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 237                 } else {
 238                         $bitmask = 0;
 239                 }
 240                 if ( $bitmask ) {
 241                         $conds[] = $dbr->makeList( array(
 242                                 'rc_type != ' . RC_LOG,
 243                                 $dbr->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 244                         ), LIST_OR );
 245                 }
 246
 247
 248                 ChangeTags::modifyDisplayQuery( $tables, $fields, $conds, $join_conds, $options, '' );
 249                 wfRunHooks( 'SpecialWatchlistQuery', array( &$conds, &$tables, &$join_conds, &$fields, $opts ) );
 250
 251                 return $dbr->select( $tables, $fields, $conds, __METHOD__, $options, $join_conds );
 252         }
 253
 254         /**
 255          * Return a DatabaseBase object for reading
 256          *
 257          * @return DatabaseBase
 258          */
 259         protected function getDB() {
 260                 return wfGetDB( DB_SLAVE, 'watchlist' );
 261         }
 262
 263         /**
 264          * Send output to the OutputPage object, only called if not used feeds
 265          *
 266          * @param ResultWrapper $rows Database rows
 267          * @param FormOptions $opts
 268          */
 269         public function webOutput( $rows, $opts ) {
 270                 global $wgShowUpdatedMarker, $wgRCShowWatchingUsers;
 271
 272                 $dbr = $this->getDB();
 273                 $user = $this->getUser();
 274
 275                 $dbr->dataSeek( $rows, 0 );
 276
 277                 $list = ChangesList::newFromContext( $this->getContext() );
 278                 $list->setWatchlistDivs();
 279
 280                 $s = $list->beginRecentChangesList();
 281                 $counter = 1;
 282                 foreach ( $rows as $obj ) {
 283                         # Make RC entry
 284                         $rc = RecentChange::newFromRow( $obj );
 285                         $rc->counter = $counter++;
 286
 287                         if ( $wgShowUpdatedMarker ) {
 288                                 $updated = $obj->wl_notificationtimestamp;
 289                         } else {
 290                                 $updated = false;
 291                         }
 292
 293                         if ( $wgRCShowWatchingUsers && $user->getOption( 'shownumberswatching' ) ) {
 294                                 $rc->numberofWatchingusers = $dbr->selectField( 'watchlist',
 295                                         'COUNT(*)',
 296                                         array(
 297                                                 'wl_namespace' => $obj->rc_namespace,
 298                                                 'wl_title' => $obj->rc_title,
 299                                         ),
 300                                         __METHOD__ );
 301                         } else {
 302                                 $rc->numberofWatchingusers = 0;
 303                         }
 304
 305                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 306                         if ( $changeLine !== false ) {
 307                                 $s .= $changeLine;
 308                         }
 309                 }
 310                 $s .= $list->endRecentChangesList();
 311
 312                 // Print things out
 313
 314                 $output = $this->getOutput();
 315
 316                 $output->addSubtitle(
 317                         $this->msg( 'watchlistfor2', $user->getName() )
 318                                 ->rawParams( SpecialEditWatchlist::buildTools( null ) )
 319                 );
 320
 321                 // Output options box
 322                 $this->doHeader( $opts );
 323
 324                 // Add feed links
 325                 $wlToken = $user->getTokenFromOption( 'watchlisttoken' );
 326                 if ( $wlToken ) {
 327                         $this->addFeedLinks( array(
 328                                 'action' => 'feedwatchlist',
 329                                 'allrev' => 1,
 330                                 'wlowner' => $user->getName(),
 331                                 'wltoken' => $wlToken,
 332                         ) );
 333                 }
 334
 335                 # Show a message about slave lag, if applicable
 336                 $lag = wfGetLB()->safeGetLag( $dbr );
 337                 if ( $lag > 0 ) {
 338                         $output->showLagWarning( $lag );
 339                 }
 340
 341                 if ( $rows->numRows() == 0 ) {
 342                         $output->wrapWikiMsg(
 343                                 "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
 344                         );
 345                 } else {
 346                         $output->addHTML( $s );
 347                 }
 348         }
 349
 350         /**
 351          * Return the text to be displayed above the changes
 352          *
 353          * @param FormOptions $opts
 354          * @return string XHTML
 355          */
 356         public function doHeader( $opts ) {
 357                 $user = $this->getUser();
 358
 359                 $this->setTopText( $opts );
 360
 361                 $lang = $this->getLanguage();
 362                 $wlInfo = '';
 363                 if ( $opts['days'] > 0 ) {
 364                         $timestamp = wfTimestampNow();
 365                         $wlInfo = $this->msg( 'wlnote2' )->numParams( round( $opts['days'] * 24 ) )->params(
 366                                 $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user ) )->parse() . "<br />\n";
 367                 }
 368
 369                 $nondefaults = $opts->getChangedValues();
 370                 $cutofflinks = $this->cutoffLinks( $opts['days'], $nondefaults ) . "<br />\n";
 371
 372                 # Spit out some control panel links
 373                 $filters = array(
 374                         'hideminor' => 'rcshowhideminor',
 375                         'hidebots' => 'rcshowhidebots',
 376                         'hideanons' => 'rcshowhideanons',
 377                         'hideliu' => 'rcshowhideliu',
 378                         'hidemyself' => 'rcshowhidemine',
 379                         'hidepatrolled' => 'rcshowhidepatr'
 380                 );
 381                 foreach ( $this->getCustomFilters() as $key => $params ) {
 382                         $filters[$key] = $params['msg'];
 383                 }
 384                 // Disable some if needed
 385                 if ( !$user->useNPPatrol() ) {
 386                         unset( $filters['hidepatrolled'] );
 387                 }
 388
 389                 $links = array();
 390                 foreach ( $filters as $name => $msg ) {
 391                         $links[] = $this->showHideLink( $nondefaults, $msg, $name, $opts[$name] );
 392                 }
 393
 394                 $hiddenFields = $nondefaults;
 395                 unset( $hiddenFields['namespace'] );
 396                 unset( $hiddenFields['invert'] );
 397                 unset( $hiddenFields['associated'] );
 398
 399                 # Create output
 400                 $form = '';
 401
 402                 # Namespace filter and put the whole form together.
 403                 $form .= $wlInfo;
 404                 $form .= $cutofflinks;
 405                 $form .= $lang->pipeList( $links ) . "\n";
 406                 $form .= "<hr />\n<p>";
 407                 $form .= Html::namespaceSelector(
 408                         array(
 409                                 'selected' => $opts['namespace'],
 410                                 'all' => '',
 411                                 'label' => $this->msg( 'namespace' )->text()
 412                         ), array(
 413                                 'name' => 'namespace',
 414                                 'id' => 'namespace',
 415                                 'class' => 'namespaceselector',
 416                         )
 417                 ) . '&#160;';
 418                 $form .= Xml::checkLabel(
 419                         $this->msg( 'invert' )->text(),
 420                         'invert',
 421                         'nsinvert',
 422                         $opts['invert'],
 423                         array( 'title' => $this->msg( 'tooltip-invert' )->text() )
 424                 ) . '&#160;';
 425                 $form .= Xml::checkLabel(
 426                         $this->msg( 'namespace_association' )->text(),
 427                         'associated',
 428                         'nsassociated',
 429                         $opts['associated'],
 430                         array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
 431                 ) . '&#160;';
 432                 $form .= Xml::submitButton( $this->msg( 'allpagessubmit' )->text() ) . "</p>\n";
 433                 foreach ( $hiddenFields as $key => $value ) {
 434                         $form .= Html::hidden( $key, $value ) . "\n";
 435                 }
 436                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 437                 $form .= Xml::closeElement( 'form' ) . "\n";
 438                 $this->getOutput()->addHTML( $form );
 439
 440                 $this->setBottomText( $opts );
 441         }
 442
 443         function setTopText( FormOptions $opts ) {
 444                 global $wgEnotifWatchlist, $wgShowUpdatedMarker;
 445
 446                 $nondefaults = $opts->getChangedValues();
 447                 $form = "";
 448                 $user = $this->getUser();
 449
 450                 $dbr = $this->getDB();
 451                 $numItems = $this->countItems( $dbr );
 452
 453                 // Show watchlist header
 454                 $form .= "<p>";
 455                 if ( $numItems == 0 ) {
 456                         $form .= $this->msg( 'nowatchlist' )->parse() . "\n";
 457                 } else {
 458                         $form .= $this->msg( 'watchlist-details' )->numParams( $numItems )->parse() . "\n";
 459                         if ( $wgEnotifWatchlist && $user->getOption( 'enotifwatchlistpages' ) ) {
 460                                 $form .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 461                         }
 462                         if ( $wgShowUpdatedMarker ) {
 463                                 $form .= $this->msg( 'wlheader-showupdated' )->parse() . "\n";
 464                         }
 465                 }
 466                 $form .= "</p>";
 467
 468                 if ( $numItems > 0 && $wgShowUpdatedMarker ) {
 469                         $form .= Xml::openElement( 'form', array( 'method' => 'post',
 470                                 'action' => $this->getPageTitle()->getLocalURL(),
 471                                 'id' => 'mw-watchlist-resetbutton' ) ) . "\n" .
 472                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(), array( 'name' => 'dummy' ) ) . "\n" .
 473                         Html::hidden( 'reset', 'all' ) . "\n";
 474                         foreach ( $nondefaults as $key => $value ) {
 475                                 $form .= Html::hidden( $key, $value ) . "\n";
 476                         }
 477                         $form .= Xml::closeElement( 'form' ) . "\n";
 478                 }
 479
 480                 $form .= Xml::openElement( 'form', array(
 481                         'method' => 'post',
 482                         'action' => $this->getPageTitle()->getLocalURL(),
 483                         'id' => 'mw-watchlist-form'
 484                 ) );
 485                 $form .= Xml::fieldset(
 486                         $this->msg( 'watchlist-options' )->text(),
 487                         false,
 488                         array( 'id' => 'mw-watchlist-options' )
 489                 );
 490
 491                 $form .= SpecialRecentChanges::makeLegend( $this->getContext() );
 492
 493                 $this->getOutput()->addHTML( $form );
 494         }
 495
 496         protected function showHideLink( $options, $message, $name, $value ) {
 497                 $label = $this->msg( $value ? 'show' : 'hide' )->escaped();
 498                 $options[$name] = 1 - (int)$value;
 499
 500                 return $this->msg( $message )->rawParams( Linker::linkKnown( $this->getPageTitle(), $label, array(), $options ) )->escaped();
 501         }
 502
 503         protected function hoursLink( $h, $options = array() ) {
 504                 $options['days'] = ( $h / 24.0 );
 505
 506                 return Linker::linkKnown(
 507                         $this->getPageTitle(),
 508                         $this->getLanguage()->formatNum( $h ),
 509                         array(),
 510                         $options
 511                 );
 512         }
 513
 514         protected function daysLink( $d, $options = array() ) {
 515                 $options['days'] = $d;
 516                 $message = ( $d ? $this->getLanguage()->formatNum( $d ) : $this->msg( 'watchlistall2' )->escaped() );
 517
 518                 return Linker::linkKnown(
 519                         $this->getPageTitle(),
 520                         $message,
 521                         array(),
 522                         $options
 523                 );
 524         }
 525
 526         /**
 527          * Returns html
 528          *
 529          * @param int $days This gets overwritten, so is not used
 530          * @param array $options Query parameters for URL
 531          * @return string
 532          */
 533         protected function cutoffLinks( $days, $options = array() ) {
 534                 $hours = array( 1, 2, 6, 12 );
 535                 $days = array( 1, 3, 7 );
 536                 $i = 0;
 537                 foreach ( $hours as $h ) {
 538                         $hours[$i++] = $this->hoursLink( $h, $options );
 539                 }
 540                 $i = 0;
 541                 foreach ( $days as $d ) {
 542                         $days[$i++] = $this->daysLink( $d, $options );
 543                 }
 544                 return $this->msg( 'wlshowlast' )->rawParams(
 545                         $this->getLanguage()->pipeList( $hours ),
 546                         $this->getLanguage()->pipeList( $days ),
 547                         $this->daysLink( 0, $options ) )->parse();
 548         }
 549
 550         /**
 551          * Count the number of items on a user's watchlist
 552          *
 553          * @param DatabaseBase $dbr A database connection
 554          * @return Integer
 555          */
 556         protected function countItems( $dbr ) {
 557                 # Fetch the raw count
 558                 $rows = $dbr->select( 'watchlist', array( 'count' => 'COUNT(*)' ),
 559                         array( 'wl_user' => $this->getUser()->getId() ), __METHOD__ );
 560                 $row = $dbr->fetchObject( $rows );
 561                 $count = $row->count;
 562
 563                 return floor( $count / 2 );
 564         }
 565 }