includes/specials/SpecialEditWatchlist.php

   1 <?php
   2
   3 /**
   4  * Provides the UI through which users can perform editing
   5  * operations on their watchlist
   6  *
   7  * @ingroup Watchlist
   8  * @author Rob Church <robchur@gmail.com>
   9  */
  10 class SpecialEditWatchlist extends UnlistedSpecialPage {
  11
  12         /**
  13          * Editing modes
  14          */
  15         const EDIT_CLEAR = 1;
  16         const EDIT_RAW = 2;
  17         const EDIT_NORMAL = 3;
  18
  19         protected $successMessage;
  20
  21         public function __construct(){
  22                 parent::__construct( 'EditWatchlist' );
  23         }
  24
  25         /**
  26          * Main execution point
  27          *
  28          * @param $mode int
  29          */
  30         public function execute( $mode ) {
  31                 if( wfReadOnly() ) {
  32                         throw new ReadOnlyError;
  33                 }
  34
  35                 $this->setHeaders();
  36
  37                 $out = $this->getOutput();
  38
  39                 # Anons don't get a watchlist
  40                 if( $this->getUser()->isAnon() ) {
  41                         $out->setPageTitle( wfMsg( 'watchnologin' ) );
  42                         $llink = Linker::linkKnown(
  43                                 SpecialPage::getTitleFor( 'Userlogin' ),
  44                                 wfMsgHtml( 'loginreqlink' ),
  45                                 array(),
  46                                 array( 'returnto' => $this->getTitle()->getPrefixedText() )
  47                         );
  48                         $out->addHTML( wfMessage( 'watchlistanontext' )->rawParams( $llink )->parse() );
  49                         return;
  50                 }
  51
  52                 $this->outputHeader();
  53
  54                 $sub  = wfMsgExt(
  55                         'watchlistfor2',
  56                         array( 'parseinline', 'replaceafter' ),
  57                         $this->getUser()->getName(),
  58                         SpecialEditWatchlist::buildTools( null )
  59                 );
  60                 $out->setSubtitle( $sub );
  61
  62                 # B/C: $mode used to be waaay down the parameter list, and the first parameter
  63                 # was $wgUser
  64                 if( $mode instanceof User ){
  65                         $args = func_get_args();
  66                         if( count( $args >= 4 ) ){
  67                                 $mode = $args[3];
  68                         }
  69                 }
  70                 $mode = self::getMode( $this->getRequest(), $mode );
  71
  72                 switch( $mode ) {
  73                         case self::EDIT_CLEAR:
  74                                 // The "Clear" link scared people too much.
  75                                 // Pass on to the raw editor, from which it's very easy to clear.
  76
  77                         case self::EDIT_RAW:
  78                                 $out->setPageTitle( wfMsg( 'watchlistedit-raw-title' ) );
  79                                 $form = $this->getRawForm();
  80                                 if( $form->show() ){
  81                                         $out->addHTML( $this->successMessage );
  82                                         $out->returnToMain();
  83                                 }
  84                                 break;
  85
  86                         case self::EDIT_NORMAL:
  87                         default:
  88                                 $out->setPageTitle( wfMsg( 'watchlistedit-normal-title' ) );
  89                                 $form = $this->getNormalForm();
  90                                 if( $form->show() ){
  91                                         $out->addHTML( $this->successMessage );
  92                                         $out->returnToMain();
  93                                 }
  94                                 break;
  95                 }
  96         }
  97
  98         /**
  99          * Extract a list of titles from a blob of text, returning
 100          * (prefixed) strings; unwatchable titles are ignored
 101          *
 102          * @param $list String
 103          * @return array
 104          */
 105         private function extractTitles( $list ) {
 106                 $titles = array();
 107                 $list = explode( "\n", trim( $list ) );
 108                 if( !is_array( $list ) ) {
 109                         return array();
 110                 }
 111                 foreach( $list as $text ) {
 112                         $text = trim( $text );
 113                         if( strlen( $text ) > 0 ) {
 114                                 $title = Title::newFromText( $text );
 115                                 if( $title instanceof Title && $title->isWatchable() ) {
 116                                         $titles[] = $title->getPrefixedText();
 117                                 }
 118                         }
 119                 }
 120                 return array_unique( $titles );
 121         }
 122
 123         public function submitRaw( $data ){
 124                 $wanted = $this->extractTitles( $data['Titles'] );
 125                 $current = $this->getWatchlist();
 126
 127                 if( count( $wanted ) > 0 ) {
 128                         $toWatch = array_diff( $wanted, $current );
 129                         $toUnwatch = array_diff( $current, $wanted );
 130                         $this->watchTitles( $toWatch );
 131                         $this->unwatchTitles( $toUnwatch );
 132                         $this->getUser()->invalidateCache();
 133
 134                         if( count( $toWatch ) > 0 || count( $toUnwatch ) > 0 ){
 135                                 $this->successMessage = wfMessage( 'watchlistedit-raw-done' )->parse();
 136                         } else {
 137                                 return false;
 138                         }
 139
 140                         if( count( $toWatch ) > 0 ) {
 141                                 $this->successMessage .= wfMessage(
 142                                         'watchlistedit-raw-added',
 143                                         $this->getLang()->formatNum( count( $toWatch ) )
 144                                 );
 145                                 $this->showTitles( $toWatch, $this->successMessage );
 146                         }
 147
 148                         if( count( $toUnwatch ) > 0 ) {
 149                                 $this->successMessage .= wfMessage(
 150                                         'watchlistedit-raw-removed',
 151                                         $this->getLang()->formatNum( count( $toUnwatch ) )
 152                                 );
 153                                 $this->showTitles( $toUnwatch, $this->successMessage );
 154                         }
 155                 } else {
 156                         $this->clearWatchlist();
 157                         $this->getUser()->invalidateCache();
 158                         $this->successMessage .= wfMessage(
 159                                 'watchlistedit-raw-removed',
 160                                 $this->getLang()->formatNum( count( $current ) )
 161                         );
 162                         $this->showTitles( $current, $this->successMessage );
 163                 }
 164                 return true;
 165         }
 166
 167         /**
 168          * Print out a list of linked titles
 169          *
 170          * $titles can be an array of strings or Title objects; the former
 171          * is preferred, since Titles are very memory-heavy
 172          *
 173          * @param $titles array of strings, or Title objects
 174          * @param $output String
 175          */
 176         private function showTitles( $titles, &$output ) {
 177                 $talk = wfMsgHtml( 'talkpagelinktext' );
 178                 // Do a batch existence check
 179                 $batch = new LinkBatch();
 180                 foreach( $titles as $title ) {
 181                         if( !$title instanceof Title ) {
 182                                 $title = Title::newFromText( $title );
 183                         }
 184                         if( $title instanceof Title ) {
 185                                 $batch->addObj( $title );
 186                                 $batch->addObj( $title->getTalkPage() );
 187                         }
 188                 }
 189                 $batch->execute();
 190                 // Print out the list
 191                 $output .= "<ul>\n";
 192                 foreach( $titles as $title ) {
 193                         if( !$title instanceof Title ) {
 194                                 $title = Title::newFromText( $title );
 195                         }
 196                         if( $title instanceof Title ) {
 197                                 $output .= "<li>"
 198                                         . Linker::link( $title )
 199                                         . ' (' . Linker::link( $title->getTalkPage(), $talk )
 200                                         . ")</li>\n";
 201                         }
 202                 }
 203                 $output .= "</ul>\n";
 204         }
 205
 206         /**
 207          * Prepare a list of titles on a user's watchlist (excluding talk pages)
 208          * and return an array of (prefixed) strings
 209          *
 210          * @return array
 211          */
 212         private function getWatchlist() {
 213                 $list = array();
 214                 $dbr = wfGetDB( DB_MASTER );
 215                 $res = $dbr->select(
 216                         'watchlist',
 217                         '*',
 218                         array(
 219                                 'wl_user' => $this->getUser()->getId(),
 220                         ),
 221                         __METHOD__
 222                 );
 223                 if( $res->numRows() > 0 ) {
 224                         foreach ( $res as $row ) {
 225                                 $title = Title::makeTitleSafe( $row->wl_namespace, $row->wl_title );
 226                                 if( $title instanceof Title && !$title->isTalkPage() )
 227                                         $list[] = $title->getPrefixedText();
 228                         }
 229                         $res->free();
 230                 }
 231                 return $list;
 232         }
 233
 234         /**
 235          * Get a list of titles on a user's watchlist, excluding talk pages,
 236          * and return as a two-dimensional array with namespace, title and
 237          * redirect status
 238          *
 239          * @return array
 240          */
 241         private function getWatchlistInfo() {
 242                 $titles = array();
 243                 $dbr = wfGetDB( DB_MASTER );
 244
 245                 $res = $dbr->select(
 246                         array( 'watchlist' ),
 247                         array( 'wl_namespace',  'wl_title' ),
 248                         array( 'wl_user' => $this->getUser()->getId() ),
 249                         __METHOD__,
 250                         array( 'ORDER BY' => 'wl_namespace, wl_title' )
 251                 );
 252
 253                 $lb = new LinkBatch();
 254                 foreach ( $res as $row ) {
 255                         $lb->add( $row->wl_namespace, $row->wl_title );
 256                         if ( !MWNamespace::isTalk( $row->wl_namespace ) ) {
 257                                 $titles[$row->wl_namespace][$row->wl_title] = false;
 258                         }
 259                 }
 260
 261                 $lb->execute();
 262                 return $titles;
 263         }
 264
 265         /**
 266          * Remove all titles from a user's watchlist
 267          */
 268         private function clearWatchlist() {
 269                 $dbw = wfGetDB( DB_MASTER );
 270                 $dbw->delete(
 271                         'watchlist',
 272                         array( 'wl_user' => $this->getUser()->getId() ),
 273                         __METHOD__
 274                 );
 275         }
 276
 277         /**
 278          * Add a list of titles to a user's watchlist
 279          *
 280          * $titles can be an array of strings or Title objects; the former
 281          * is preferred, since Titles are very memory-heavy
 282          *
 283          * @param $titles Array of strings, or Title objects
 284          */
 285         private function watchTitles( $titles ) {
 286                 $dbw = wfGetDB( DB_MASTER );
 287                 $rows = array();
 288                 foreach( $titles as $title ) {
 289                         if( !$title instanceof Title ) {
 290                                 $title = Title::newFromText( $title );
 291                         }
 292                         if( $title instanceof Title ) {
 293                                 $rows[] = array(
 294                                         'wl_user' => $this->getUser()->getId(),
 295                                         'wl_namespace' => ( $title->getNamespace() & ~1 ),
 296                                         'wl_title' => $title->getDBkey(),
 297                                         'wl_notificationtimestamp' => null,
 298                                 );
 299                                 $rows[] = array(
 300                                         'wl_user' => $this->getUser()->getId(),
 301                                         'wl_namespace' => ( $title->getNamespace() | 1 ),
 302                                         'wl_title' => $title->getDBkey(),
 303                                         'wl_notificationtimestamp' => null,
 304                                 );
 305                         }
 306                 }
 307                 $dbw->insert( 'watchlist', $rows, __METHOD__, 'IGNORE' );
 308         }
 309
 310         /**
 311          * Remove a list of titles from a user's watchlist
 312          *
 313          * $titles can be an array of strings or Title objects; the former
 314          * is preferred, since Titles are very memory-heavy
 315          *
 316          * @param $titles Array of strings, or Title objects
 317          */
 318         private function unwatchTitles( $titles ) {
 319                 $dbw = wfGetDB( DB_MASTER );
 320                 foreach( $titles as $title ) {
 321                         if( !$title instanceof Title ) {
 322                                 $title = Title::newFromText( $title );
 323                         }
 324                         if( $title instanceof Title ) {
 325                                 $dbw->delete(
 326                                         'watchlist',
 327                                         array(
 328                                                 'wl_user' => $this->getUser()->getId(),
 329                                                 'wl_namespace' => ( $title->getNamespace() & ~1 ),
 330                                                 'wl_title' => $title->getDBkey(),
 331                                         ),
 332                                         __METHOD__
 333                                 );
 334                                 $dbw->delete(
 335                                         'watchlist',
 336                                         array(
 337                                                 'wl_user' => $this->getUser()->getId(),
 338                                                 'wl_namespace' => ( $title->getNamespace() | 1 ),
 339                                                 'wl_title' => $title->getDBkey(),
 340                                         ),
 341                                         __METHOD__
 342                                 );
 343                                 $article = new Article( $title, 0 );
 344                                 wfRunHooks( 'UnwatchArticleComplete', array( $this->getUser(), &$article ) );
 345                         }
 346                 }
 347         }
 348
 349         public function submitNormal( $data ) {
 350                 $removed = array();
 351
 352                 foreach( $data as $titles ) {
 353                         $this->unwatchTitles( $titles );
 354                         $removed += $titles;
 355                 }
 356
 357                 if( count( $removed ) > 0 ) {
 358                         $this->successMessage = wfMessage(
 359                                 'watchlistedit-normal-done',
 360                                 $this->getLang()->formatNum( count( $removed ) )
 361                         );
 362                         $this->showTitles( $removed, $this->successMessage );
 363                         return true;
 364                 } else {
 365                         return false;
 366                 }
 367         }
 368
 369         /**
 370          * Get the standard watchlist editing form
 371          *
 372          * @return HTMLForm
 373          */
 374         protected function getNormalForm(){
 375                 global $wgContLang;
 376
 377                 $fields = array();
 378
 379                 foreach( $this->getWatchlistInfo() as $namespace => $pages ){
 380
 381                         $namespace == NS_MAIN
 382                                 ? wfMsgHtml( 'blanknamespace' )
 383                                 : htmlspecialchars( $wgContLang->getFormattedNsText( $namespace ) );
 384
 385                         $fields['TitlesNs'.$namespace] = array(
 386                                 'type' => 'multiselect',
 387                                 'options' => array(),
 388                                 'section' => "ns$namespace",
 389                         );
 390
 391                         foreach( array_keys( $pages ) as $dbkey ){
 392                                 $title = Title::makeTitleSafe( $namespace, $dbkey );
 393                                 $text = $this->buildRemoveLine( $title );
 394                                 $fields['TitlesNs'.$namespace]['options'][$text] = $title->getEscapedText();
 395                         }
 396                 }
 397
 398                 $form = new EditWatchlistNormalHTMLForm( $fields, $this->getContext() );
 399                 $form->setTitle( $this->getTitle() );
 400                 $form->setSubmitText( wfMessage( 'watchlistedit-normal-submit' )->text() );
 401                 $form->setWrapperLegend( wfMessage( 'watchlistedit-normal-legend' )->text() );
 402                 $form->addHeaderText( wfMessage( 'watchlistedit-normal-explain' )->parse() );
 403                 $form->setSubmitCallback( array( $this, 'submitNormal' ) );
 404                 return $form;
 405         }
 406
 407         /**
 408          * Build the label for a checkbox, with a link to the title, and various additional bits
 409          *
 410          * @param $title Title
 411          * @return string
 412          */
 413         private function buildRemoveLine( $title ) {
 414                 $link = Linker::link( $title );
 415                 if( $title->isRedirect() ) {
 416                         // Linker already makes class mw-redirect, so this is redundant
 417                         $link = '<span class="watchlistredir">' . $link . '</span>';
 418                 }
 419                 $tools[] = Linker::link( $title->getTalkPage(), wfMsgHtml( 'talkpagelinktext' ) );
 420                 if( $title->exists() ) {
 421                         $tools[] = Linker::linkKnown(
 422                                 $title,
 423                                 wfMsgHtml( 'history_short' ),
 424                                 array(),
 425                                 array( 'action' => 'history' )
 426                         );
 427                 }
 428                 if( $title->getNamespace() == NS_USER && !$title->isSubpage() ) {
 429                         $tools[] = Linker::linkKnown(
 430                                 SpecialPage::getTitleFor( 'Contributions', $title->getText() ),
 431                                 wfMsgHtml( 'contributions' )
 432                         );
 433                 }
 434
 435                 wfRunHooks( 'WatchlistEditorBuildRemoveLine', array( &$tools, $title, $title->isRedirect(), $this->getSkin() ) );
 436
 437                 return $link . " (" . $this->getLang()->pipeList( $tools ) . ")";
 438         }
 439
 440         /**
 441          * Get a form for editing the watchlist in "raw" mode
 442          *
 443          * @return HTMLForm
 444          */
 445         protected function getRawForm(){
 446                 $titles = implode( array_map( 'htmlspecialchars', $this->getWatchlist() ), "\n" );
 447                 $fields = array(
 448                         'Titles' => array(
 449                                 'type' => 'textarea',
 450                                 'label-message' => 'watchlistedit-raw-titles',
 451                                 'default' => $titles,
 452                         ),
 453                 );
 454                 $form = new HTMLForm( $fields, $this->getContext() );
 455                 $form->setTitle( $this->getTitle( 'raw' ) );
 456                 $form->setSubmitText( wfMessage( 'watchlistedit-raw-submit' )->text() );
 457                 $form->setWrapperLegend( wfMessage( 'watchlistedit-raw-legend' )->text() );
 458                 $form->addHeaderText( wfMessage( 'watchlistedit-raw-explain' )->parse() );
 459                 $form->setSubmitCallback( array( $this, 'submitRaw' ) );
 460                 return $form;
 461         }
 462
 463         /**
 464          * Determine whether we are editing the watchlist, and if so, what
 465          * kind of editing operation
 466          *
 467          * @param $request WebRequest
 468          * @param $par mixed
 469          * @return int
 470          */
 471         public static function getMode( $request, $par ) {
 472                 $mode = strtolower( $request->getVal( 'action', $par ) );
 473                 switch( $mode ) {
 474                         case 'clear':
 475                         case self::EDIT_CLEAR:
 476                                 return self::EDIT_CLEAR;
 477
 478                         case 'raw':
 479                         case self::EDIT_RAW:
 480                                 return self::EDIT_RAW;
 481
 482                         case 'edit':
 483                         case self::EDIT_NORMAL:
 484                                 return self::EDIT_NORMAL;
 485
 486                         default:
 487                                 return false;
 488                 }
 489         }
 490
 491         /**
 492          * Build a set of links for convenient navigation
 493          * between watchlist viewing and editing modes
 494          *
 495          * @param $unused Unused
 496          * @return string
 497          */
 498         public static function buildTools( $unused ) {
 499                 global $wgLang;
 500
 501                 $tools = array();
 502                 $modes = array(
 503                         'view' => array( 'Watchlist', false ),
 504                         'edit' => array( 'EditWatchlist', false ),
 505                         'raw' => array( 'EditWatchlist', 'raw' ),
 506                 );
 507                 foreach( $modes as $mode => $arr ) {
 508                         // can use messages 'watchlisttools-view', 'watchlisttools-edit', 'watchlisttools-raw'
 509                         $tools[] = Linker::linkKnown(
 510                                 SpecialPage::getTitleFor( $arr[0], $arr[1] ),
 511                                 wfMsgHtml( "watchlisttools-{$mode}" )
 512                         );
 513                 }
 514                 return Html::rawElement( 'span',
 515                                         array( 'class' => 'mw-watchlist-toollinks' ),
 516                                         wfMsg( 'parentheses', $wgLang->pipeList( $tools ) ) );
 517         }
 518 }
 519
 520 # B/C since 1.18
 521 class WatchlistEditor extends SpecialEditWatchlist {}
 522
 523 /**
 524  * Extend HTMLForm purely so we can have a more sane way of getting the section headers
 525  */
 526 class EditWatchlistNormalHTMLForm extends HTMLForm {
 527         public function getLegend( $namespace ){
 528                 $namespace = substr( $namespace, 2 );
 529                 return $namespace == NS_MAIN
 530                         ? wfMsgHtml( 'blanknamespace' )
 531                         : htmlspecialchars( $this->getContext()->getLang()->getFormattedNsText( $namespace ) );
 532         }
 533 }