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