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