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 Watchlist
  22  */
  23 class SpecialWatchlist extends SpecialPage {
  24         protected $customFilters;
  25
  26         /**
  27          * Constructor
  28          */
  29         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  30                 parent::__construct( $page, $restriction );
  31         }
  32
  33         /**
  34          * Execute
  35          * @param $par Parameter passed to the page
  36          */
  37         function execute( $par ) {
  38                 global $wgRCShowWatchingUsers, $wgEnotifWatchlist, $wgShowUpdatedMarker;
  39
  40                 $user = $this->getUser();
  41                 $output = $this->getOutput();
  42
  43                 # Anons don't get a watchlist
  44                 if ( $user->isAnon() ) {
  45                         $output->setPageTitle( $this->msg( 'watchnologin' ) );
  46                         $output->setRobotPolicy( 'noindex,nofollow' );
  47                         $llink = Linker::linkKnown(
  48                                 SpecialPage::getTitleFor( 'Userlogin' ),
  49                                 $this->msg( 'loginreqlink' )->escaped(),
  50                                 array(),
  51                                 array( 'returnto' => $this->getTitle()->getPrefixedText() )
  52                         );
  53                         $output->addHTML( $this->msg( 'watchlistanontext' )->rawParams( $llink )->parse() );
  54                         return;
  55                 }
  56
  57                 // Check permissions
  58                 $this->checkPermissions();
  59
  60                 // Add feed links
  61                 $wlToken = $user->getOption( 'watchlisttoken' );
  62                 if ( !$wlToken ) {
  63                         $wlToken = MWCryptRand::generateHex( 40 );
  64                         $user->setOption( 'watchlisttoken', $wlToken );
  65                         $user->saveSettings();
  66                 }
  67
  68                 $this->addFeedLinks( array( 'action' => 'feedwatchlist', 'allrev' => 'allrev',
  69                                                         'wlowner' => $user->getName(), 'wltoken' => $wlToken ) );
  70
  71                 $this->setHeaders();
  72                 $this->outputHeader();
  73
  74                 $output->addSubtitle( $this->msg( 'watchlistfor2', $user->getName()
  75                         )->rawParams( SpecialEditWatchlist::buildTools( null ) ) );
  76
  77                 $request = $this->getRequest();
  78
  79                 $mode = SpecialEditWatchlist::getMode( $request, $par );
  80                 if ( $mode !== false ) {
  81                         # TODO: localise?
  82                         switch ( $mode ) {
  83                                 case SpecialEditWatchlist::EDIT_CLEAR:
  84                                         $mode = 'clear';
  85                                         break;
  86                                 case SpecialEditWatchlist::EDIT_RAW:
  87                                         $mode = 'raw';
  88                                         break;
  89                                 default:
  90                                         $mode = null;
  91                         }
  92                         $title = SpecialPage::getTitleFor( 'EditWatchlist', $mode );
  93                         $output->redirect( $title->getLocalURL() );
  94                         return;
  95                 }
  96
  97                 $dbr = wfGetDB( DB_SLAVE, 'watchlist' );
  98
  99                 $nitems = $this->countItems( $dbr );
 100                 if ( $nitems == 0 ) {
 101                         $output->addWikiMsg( 'nowatchlist' );
 102                         return;
 103                 }
 104
 105                 // @todo use FormOptions!
 106                 $defaults = array(
 107                 /* float */ 'days' => floatval( $user->getOption( 'watchlistdays' ) ), /* 3.0 or 0.5, watch further below */
 108                 /* bool  */ 'hideMinor' => (int)$user->getBoolOption( 'watchlisthideminor' ),
 109                 /* bool  */ 'hideBots' => (int)$user->getBoolOption( 'watchlisthidebots' ),
 110                 /* bool  */ 'hideAnons' => (int)$user->getBoolOption( 'watchlisthideanons' ),
 111                 /* bool  */ 'hideLiu' => (int)$user->getBoolOption( 'watchlisthideliu' ),
 112                 /* bool  */ 'hidePatrolled' => (int)$user->getBoolOption( 'watchlisthidepatrolled' ),
 113                 /* bool  */ 'hideOwn' => (int)$user->getBoolOption( 'watchlisthideown' ),
 114                 /* bool  */ 'extended' => (int)$user->getBoolOption( 'extendwatchlist' ),
 115                 /* ?     */ 'namespace' => '', //means all
 116                 /* ?     */ 'invert' => false,
 117                 /* bool  */ 'associated' => false,
 118                 );
 119                 $this->customFilters = array();
 120                 wfRunHooks( 'SpecialWatchlistFilters', array( $this, &$this->customFilters ) );
 121                 foreach ( $this->customFilters as $key => $params ) {
 122                         $defaults[$key] = $params['default'];
 123                 }
 124
 125                 # Extract variables from the request, falling back to user preferences or
 126                 # other default values if these don't exist
 127                 $values = array();
 128                 $values['days'] = $request->getVal( 'days', $defaults['days'] );
 129                 $values['hideMinor'] = (int)$request->getBool( 'hideMinor', $defaults['hideMinor'] );
 130                 $values['hideBots'] = (int)$request->getBool( 'hideBots', $defaults['hideBots'] );
 131                 $values['hideAnons'] = (int)$request->getBool( 'hideAnons', $defaults['hideAnons'] );
 132                 $values['hideLiu'] = (int)$request->getBool( 'hideLiu', $defaults['hideLiu'] );
 133                 $values['hideOwn'] = (int)$request->getBool( 'hideOwn', $defaults['hideOwn'] );
 134                 $values['hidePatrolled'] = (int)$request->getBool( 'hidePatrolled', $defaults['hidePatrolled'] );
 135                 $values['extended'] = (int)$request->getBool( 'extended', $defaults['extended'] );
 136                 foreach ( $this->customFilters as $key => $params ) {
 137                         $values[$key] = (int)$request->getBool( $key, $defaults[$key] );
 138                 }
 139
 140                 # Get namespace value, if supplied, and prepare a WHERE fragment
 141                 $nameSpace = $request->getIntOrNull( 'namespace' );
 142                 $invert = $request->getBool( 'invert' );
 143                 $associated = $request->getBool( 'associated' );
 144                 if ( !is_null( $nameSpace ) ) {
 145                         $eq_op = $invert ? '!=' : '=';
 146                         $bool_op = $invert ? 'AND' : 'OR';
 147                         $nameSpace = intval( $nameSpace ); // paranioa
 148                         if ( !$associated ) {
 149                                 $nameSpaceClause = "rc_namespace $eq_op $nameSpace";
 150                         } else {
 151                                 $associatedNS = MWNamespace::getAssociated( $nameSpace );
 152                                 $nameSpaceClause =
 153                                         "rc_namespace $eq_op $nameSpace " .
 154                                         $bool_op .
 155                                         " rc_namespace $eq_op $associatedNS";
 156                         }
 157                 } else {
 158                         $nameSpace = '';
 159                         $nameSpaceClause = '';
 160                 }
 161                 $values['namespace'] = $nameSpace;
 162                 $values['invert'] = $invert;
 163                 $values['associated'] = $associated;
 164
 165                 if ( is_null( $values['days'] ) || !is_numeric( $values['days'] ) ) {
 166                         $big = 1000; /* The magical big */
 167                         if ( $nitems > $big ) {
 168                                 # Set default cutoff shorter
 169                                 $values['days'] = $defaults['days'] = ( 12.0 / 24.0 ); # 12 hours...
 170                         } else {
 171                                 $values['days'] = $defaults['days']; # default cutoff for shortlisters
 172                         }
 173                 } else {
 174                         $values['days'] = floatval( $values['days'] );
 175                 }
 176
 177                 // Dump everything here
 178                 $nondefaults = array();
 179                 foreach ( $defaults as $name => $defValue ) {
 180                         wfAppendToArrayIfNotDefault( $name, $values[$name], $defaults, $nondefaults );
 181                 }
 182
 183                 if ( ( $wgEnotifWatchlist || $wgShowUpdatedMarker ) && $request->getVal( 'reset' ) &&
 184                         $request->wasPosted() )
 185                 {
 186                         $user->clearAllNotifications();
 187                         $output->redirect( $this->getTitle()->getFullURL( $nondefaults ) );
 188                         return;
 189                 }
 190
 191                 # Possible where conditions
 192                 $conds = array();
 193
 194                 if ( $values['days'] > 0 ) {
 195                         $conds[] = 'rc_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( time() - intval( $values['days'] * 86400 ) ) );
 196                 }
 197
 198                 # If the watchlist is relatively short, it's simplest to zip
 199                 # down its entirety and then sort the results.
 200
 201                 # If it's relatively long, it may be worth our while to zip
 202                 # through the time-sorted page list checking for watched items.
 203
 204                 # Up estimate of watched items by 15% to compensate for talk pages...
 205
 206                 # Toggles
 207                 if ( $values['hideOwn'] ) {
 208                         $conds[] = 'rc_user != ' . $user->getId();
 209                 }
 210                 if ( $values['hideBots'] ) {
 211                         $conds[] = 'rc_bot = 0';
 212                 }
 213                 if ( $values['hideMinor'] ) {
 214                         $conds[] = 'rc_minor = 0';
 215                 }
 216                 if ( $values['hideLiu'] ) {
 217                         $conds[] = 'rc_user = 0';
 218                 }
 219                 if ( $values['hideAnons'] ) {
 220                         $conds[] = 'rc_user != 0';
 221                 }
 222                 if ( $user->useRCPatrol() && $values['hidePatrolled'] ) {
 223                         $conds[] = 'rc_patrolled != 1';
 224                 }
 225                 if ( $nameSpaceClause ) {
 226                         $conds[] = $nameSpaceClause;
 227                 }
 228
 229                 # Toggle watchlist content (all recent edits or just the latest)
 230                 if ( $values['extended'] ) {
 231                         $limitWatchlist = $user->getIntOption( 'wllimit' );
 232                         $usePage = false;
 233                 } else {
 234                         # Top log Ids for a page are not stored
 235                         $conds[] = 'rc_this_oldid=page_latest OR rc_type=' . RC_LOG;
 236                         $limitWatchlist = 0;
 237                         $usePage = true;
 238                 }
 239
 240                 # Show a message about slave lag, if applicable
 241                 $lag = wfGetLB()->safeGetLag( $dbr );
 242                 if ( $lag > 0 ) {
 243                         $output->showLagWarning( $lag );
 244                 }
 245
 246                 # Create output form
 247                 $form = Xml::fieldset(
 248                         $this->msg( 'watchlist-options' )->text(),
 249                         false,
 250                         array( 'id' => 'mw-watchlist-options' )
 251                 );
 252
 253                 # Show watchlist header
 254                 $form .= "<p>";
 255                 $form .= $this->msg( 'watchlist-details' )->numParams( $nitems )->parse() . "\n";
 256                 if ( $wgEnotifWatchlist && $user->getOption( 'enotifwatchlistpages' ) ) {
 257                         $form .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 258                 }
 259                 if ( $wgShowUpdatedMarker ) {
 260                         $form .= $this->msg( 'wlheader-showupdated' )->parse() . "\n";
 261                 }
 262                 $form .= "</p>";
 263
 264                 if ( $wgShowUpdatedMarker ) {
 265                         $form .= Xml::openElement( 'form', array( 'method' => 'post',
 266                                 'action' => $this->getTitle()->getLocalURL(),
 267                                 'id' => 'mw-watchlist-resetbutton' ) ) . "\n" .
 268                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(), array( 'name' => 'dummy' ) ) . "\n" .
 269                         Html::hidden( 'reset', 'all' ) . "\n";
 270                         foreach ( $nondefaults as $key => $value ) {
 271                                 $form .= Html::hidden( $key, $value ) . "\n";
 272                         }
 273                         $form .= Xml::closeElement( 'form' ) . "\n";
 274                 }
 275
 276                 $form .= "<hr />\n";
 277
 278                 $tables = array( 'recentchanges', 'watchlist' );
 279                 $fields = RecentChange::selectFields();
 280                 $join_conds = array(
 281                         'watchlist' => array(
 282                                 'INNER JOIN',
 283                                 array(
 284                                         'wl_user' => $user->getId(),
 285                                         'wl_namespace=rc_namespace',
 286                                         'wl_title=rc_title'
 287                                 ),
 288                         ),
 289                 );
 290                 $options = array( 'ORDER BY' => 'rc_timestamp DESC' );
 291                 if ( $wgShowUpdatedMarker ) {
 292                         $fields[] = 'wl_notificationtimestamp';
 293                 }
 294                 if ( $limitWatchlist ) {
 295                         $options['LIMIT'] = $limitWatchlist;
 296                 }
 297
 298                 $rollbacker = $user->isAllowed( 'rollback' );
 299                 if ( $usePage || $rollbacker ) {
 300                         $tables[] = 'page';
 301                         $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
 302                         if ( $rollbacker ) {
 303                                 $fields[] = 'page_latest';
 304                         }
 305                 }
 306
 307                 ChangeTags::modifyDisplayQuery( $tables, $fields, $conds, $join_conds, $options, '' );
 308                 wfRunHooks( 'SpecialWatchlistQuery', array( &$conds, &$tables, &$join_conds, &$fields, $values ) );
 309
 310                 $res = $dbr->select( $tables, $fields, $conds, __METHOD__, $options, $join_conds );
 311                 $numRows = $res->numRows();
 312
 313                 /* Start bottom header */
 314
 315                 $lang = $this->getLanguage();
 316                 $wlInfo = '';
 317                 if ( $values['days'] > 0 ) {
 318                         $timestamp = wfTimestampNow();
 319                         $wlInfo = $this->msg( 'wlnote' )->numParams( $numRows, round( $values['days'] * 24 ) )->params(
 320                                 $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user ) )->parse() . "<br />\n";
 321                 }
 322
 323                 $cutofflinks = $this->cutoffLinks( $values['days'], $nondefaults ) . "<br />\n";
 324
 325                 # Spit out some control panel links
 326                 $filters = array(
 327                         'hideMinor' => 'rcshowhideminor',
 328                         'hideBots' => 'rcshowhidebots',
 329                         'hideAnons' => 'rcshowhideanons',
 330                         'hideLiu' => 'rcshowhideliu',
 331                         'hideOwn' => 'rcshowhidemine',
 332                         'hidePatrolled' => 'rcshowhidepatr'
 333                 );
 334                 foreach ( $this->customFilters as $key => $params ) {
 335                         $filters[$key] = $params['msg'];
 336                 }
 337                 // Disable some if needed
 338                 if ( !$user->useNPPatrol() ) {
 339                         unset( $filters['hidePatrolled'] );
 340                 }
 341
 342                 $links = array();
 343                 foreach ( $filters as $name => $msg ) {
 344                         $links[] = $this->showHideLink( $nondefaults, $msg, $name, $values[$name] );
 345                 }
 346
 347                 $hiddenFields = $nondefaults;
 348                 unset( $hiddenFields['namespace'] );
 349                 unset( $hiddenFields['invert'] );
 350                 unset( $hiddenFields['associated'] );
 351
 352                 # Namespace filter and put the whole form together.
 353                 $form .= $wlInfo;
 354                 $form .= $cutofflinks;
 355                 $form .= $lang->pipeList( $links ) . "\n";
 356                 $form .= Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getTitle()->getLocalURL(), 'id' => 'mw-watchlist-form-namespaceselector' ) ) . "\n";
 357                 $form .= "<hr />\n<p>";
 358                 $form .= Html::namespaceSelector(
 359                         array(
 360                                 'selected' => $nameSpace,
 361                                 'all' => '',
 362                                 'label' => $this->msg( 'namespace' )->text()
 363                         ), array(
 364                                 'name' => 'namespace',
 365                                 'id' => 'namespace',
 366                                 'class' => 'namespaceselector',
 367                         )
 368                 ) . '&#160;';
 369                 $form .= Xml::checkLabel(
 370                         $this->msg( 'invert' )->text(),
 371                         'invert',
 372                         'nsinvert',
 373                         $invert,
 374                         array( 'title' => $this->msg( 'tooltip-invert' )->text() )
 375                 ) . '&#160;';
 376                 $form .= Xml::checkLabel(
 377                         $this->msg( 'namespace_association' )->text(),
 378                         'associated',
 379                         'associated',
 380                         $associated,
 381                         array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
 382                 ) . '&#160;';
 383                 $form .= Xml::submitButton( $this->msg( 'allpagessubmit' )->text() ) . "</p>\n";
 384                 foreach ( $hiddenFields as $key => $value ) {
 385                         $form .= Html::hidden( $key, $value ) . "\n";
 386                 }
 387                 $form .= Xml::closeElement( 'form' ) . "\n";
 388                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 389                 $output->addHTML( $form );
 390
 391                 # If there's nothing to show, stop here
 392                 if ( $numRows == 0 ) {
 393                         $output->addWikiMsg( 'watchnochange' );
 394                         return;
 395                 }
 396
 397                 /* End bottom header */
 398
 399                 /* Do link batch query */
 400                 $linkBatch = new LinkBatch;
 401                 foreach ( $res as $row ) {
 402                         $userNameUnderscored = str_replace( ' ', '_', $row->rc_user_text );
 403                         if ( $row->rc_user != 0 ) {
 404                                 $linkBatch->add( NS_USER, $userNameUnderscored );
 405                         }
 406                         $linkBatch->add( NS_USER_TALK, $userNameUnderscored );
 407
 408                         $linkBatch->add( $row->rc_namespace, $row->rc_title );
 409                 }
 410                 $linkBatch->execute();
 411                 $dbr->dataSeek( $res, 0 );
 412
 413                 $list = ChangesList::newFromContext( $this->getContext() );
 414                 $list->setWatchlistDivs();
 415
 416                 $s = $list->beginRecentChangesList();
 417                 $counter = 1;
 418                 foreach ( $res as $obj ) {
 419                         # Make RC entry
 420                         $rc = RecentChange::newFromRow( $obj );
 421                         $rc->counter = $counter++;
 422
 423                         if ( $wgShowUpdatedMarker ) {
 424                                 $updated = $obj->wl_notificationtimestamp;
 425                         } else {
 426                                 $updated = false;
 427                         }
 428
 429                         if ( $wgRCShowWatchingUsers && $user->getOption( 'shownumberswatching' ) ) {
 430                                 $rc->numberofWatchingusers = $dbr->selectField( 'watchlist',
 431                                         'COUNT(*)',
 432                                         array(
 433                                                 'wl_namespace' => $obj->rc_namespace,
 434                                                 'wl_title' => $obj->rc_title,
 435                                         ),
 436                                         __METHOD__ );
 437                         } else {
 438                                 $rc->numberofWatchingusers = 0;
 439                         }
 440
 441                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 442                         if ( $changeLine !== false ) {
 443                                 $s .= $changeLine;
 444                         }
 445                 }
 446                 $s .= $list->endRecentChangesList();
 447
 448                 $output->addHTML( $s );
 449         }
 450
 451         protected function showHideLink( $options, $message, $name, $value ) {
 452                 $label = $this->msg( $value ? 'show' : 'hide' )->escaped();
 453                 $options[$name] = 1 - (int) $value;
 454
 455                 return $this->msg( $message )->rawParams( Linker::linkKnown( $this->getTitle(), $label, array(), $options ) )->escaped();
 456         }
 457
 458         protected function hoursLink( $h, $options = array() ) {
 459                 $options['days'] = ( $h / 24.0 );
 460
 461                 return Linker::linkKnown(
 462                         $this->getTitle(),
 463                         $this->getLanguage()->formatNum( $h ),
 464                         array(),
 465                         $options
 466                 );
 467         }
 468
 469         protected function daysLink( $d, $options = array() ) {
 470                 $options['days'] = $d;
 471                 $message = ( $d ? $this->getLanguage()->formatNum( $d ) : $this->msg( 'watchlistall2' )->escaped() );
 472
 473                 return Linker::linkKnown(
 474                         $this->getTitle(),
 475                         $message,
 476                         array(),
 477                         $options
 478                 );
 479         }
 480
 481         /**
 482          * Returns html
 483          *
 484          * @param int $days This gets overwritten, so is not used
 485          * @param array $options Query parameters for URL
 486          * @return string
 487          */
 488         protected function cutoffLinks( $days, $options = array() ) {
 489                 $hours = array( 1, 2, 6, 12 );
 490                 $days = array( 1, 3, 7 );
 491                 $i = 0;
 492                 foreach ( $hours as $h ) {
 493                         $hours[$i++] = $this->hoursLink( $h, $options );
 494                 }
 495                 $i = 0;
 496                 foreach ( $days as $d ) {
 497                         $days[$i++] = $this->daysLink( $d, $options );
 498                 }
 499                 return $this->msg( 'wlshowlast' )->rawParams(
 500                         $this->getLanguage()->pipeList( $hours ),
 501                         $this->getLanguage()->pipeList( $days ),
 502                         $this->daysLink( 0, $options ) )->parse();
 503         }
 504
 505         /**
 506          * Count the number of items on a user's watchlist
 507          *
 508          * @param DatabaseBase $dbr A database connection
 509          * @return Integer
 510          */
 511         protected function countItems( $dbr ) {
 512                 # Fetch the raw count
 513                 $res = $dbr->select( 'watchlist', array( 'count' => 'COUNT(*)' ),
 514                         array( 'wl_user' => $this->getUser()->getId() ), __METHOD__ );
 515                 $row = $dbr->fetchObject( $res );
 516                 $count = $row->count;
 517
 518                 return floor( $count / 2 );
 519         }
 520
 521         protected function getGroupName() {
 522                 return 'changes';
 523         }
 524 }