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1 | <?php |
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2 | /** |
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3 | * This program is free software; you can redistribute it and/or modify |
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4 | * it under the terms of the GNU General Public License as published by |
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5 | * the Free Software Foundation; either version 2 of the License, or |
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6 | * (at your option) any later version. |
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7 | * |
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8 | * This program is distributed in the hope that it will be useful, |
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9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 | * GNU General Public License for more details. |
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12 | * |
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13 | * You should have received a copy of the GNU General Public License along |
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14 | * with this program; if not, write to the Free Software Foundation, Inc., |
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15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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16 | * http://www.gnu.org/copyleft/gpl.html |
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17 | * |
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18 | * @file |
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19 | * @ingroup Pager |
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20 | */ |
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21 | |||
22 | /** |
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23 | * Pager for Special:Contributions |
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24 | * @ingroup Pager |
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25 | */ |
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26 | class ContribsPager extends ReverseChronologicalPager { |
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27 | |||
28 | public $mDefaultDirection = IndexPager::DIR_DESCENDING; |
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29 | public $messages; |
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30 | public $target; |
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31 | public $namespace = ''; |
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32 | public $mDb; |
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33 | public $preventClickjacking = false; |
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34 | |||
35 | /** @var IDatabase */ |
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36 | public $mDbSecondary; |
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37 | |||
38 | /** |
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39 | * @var array |
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40 | */ |
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41 | protected $mParentLens; |
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42 | |||
43 | function __construct( IContextSource $context, array $options ) { |
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44 | parent::__construct( $context ); |
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45 | |||
46 | $msgs = [ |
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47 | 'diff', |
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48 | 'hist', |
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49 | 'pipe-separator', |
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50 | 'uctop' |
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51 | ]; |
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52 | |||
53 | foreach ( $msgs as $msg ) { |
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54 | $this->messages[$msg] = $this->msg( $msg )->escaped(); |
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55 | } |
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56 | |||
57 | $this->target = isset( $options['target'] ) ? $options['target'] : ''; |
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58 | $this->contribs = isset( $options['contribs'] ) ? $options['contribs'] : 'users'; |
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59 | $this->namespace = isset( $options['namespace'] ) ? $options['namespace'] : ''; |
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60 | $this->tagFilter = isset( $options['tagfilter'] ) ? $options['tagfilter'] : false; |
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61 | $this->nsInvert = isset( $options['nsInvert'] ) ? $options['nsInvert'] : false; |
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62 | $this->associated = isset( $options['associated'] ) ? $options['associated'] : false; |
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63 | |||
64 | $this->deletedOnly = !empty( $options['deletedOnly'] ); |
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65 | $this->topOnly = !empty( $options['topOnly'] ); |
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66 | $this->newOnly = !empty( $options['newOnly'] ); |
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67 | $this->hideMinor = !empty( $options['hideMinor'] ); |
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68 | |||
69 | $year = isset( $options['year'] ) ? $options['year'] : false; |
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70 | $month = isset( $options['month'] ) ? $options['month'] : false; |
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71 | $this->getDateCond( $year, $month ); |
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72 | |||
73 | // Most of this code will use the 'contributions' group DB, which can map to replica DBs |
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74 | // with extra user based indexes or partioning by user. The additional metadata |
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75 | // queries should use a regular replica DB since the lookup pattern is not all by user. |
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76 | $this->mDbSecondary = wfGetDB( DB_REPLICA ); // any random replica DB |
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77 | $this->mDb = wfGetDB( DB_REPLICA, 'contributions' ); |
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78 | } |
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79 | |||
80 | function getDefaultQuery() { |
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81 | $query = parent::getDefaultQuery(); |
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82 | $query['target'] = $this->target; |
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83 | |||
84 | return $query; |
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85 | } |
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86 | |||
87 | /** |
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88 | * This method basically executes the exact same code as the parent class, though with |
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89 | * a hook added, to allow extensions to add additional queries. |
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90 | * |
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91 | * @param string $offset Index offset, inclusive |
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92 | * @param int $limit Exact query limit |
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93 | * @param bool $descending Query direction, false for ascending, true for descending |
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94 | * @return ResultWrapper |
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95 | */ |
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96 | function reallyDoQuery( $offset, $limit, $descending ) { |
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97 | list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo( |
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98 | $offset, |
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99 | $limit, |
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100 | $descending |
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101 | ); |
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102 | |||
103 | /* |
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104 | * This hook will allow extensions to add in additional queries, so they can get their data |
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105 | * in My Contributions as well. Extensions should append their results to the $data array. |
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106 | * |
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107 | * Extension queries have to implement the navbar requirement as well. They should |
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108 | * - have a column aliased as $pager->getIndexField() |
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109 | * - have LIMIT set |
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110 | * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset |
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111 | * - have the ORDER BY specified based upon the details provided by the navbar |
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112 | * |
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113 | * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY |
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114 | * |
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115 | * &$data: an array of results of all contribs queries |
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116 | * $pager: the ContribsPager object hooked into |
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117 | * $offset: see phpdoc above |
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118 | * $limit: see phpdoc above |
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119 | * $descending: see phpdoc above |
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120 | */ |
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121 | $data = [ $this->mDb->select( |
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122 | $tables, $fields, $conds, $fname, $options, $join_conds |
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123 | ) ]; |
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124 | Hooks::run( |
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125 | 'ContribsPager::reallyDoQuery', |
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126 | [ &$data, $this, $offset, $limit, $descending ] |
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127 | ); |
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128 | |||
129 | $result = []; |
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130 | |||
131 | // loop all results and collect them in an array |
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132 | View Code Duplication | foreach ( $data as $query ) { |
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133 | foreach ( $query as $i => $row ) { |
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134 | // use index column as key, allowing us to easily sort in PHP |
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135 | $result[$row->{$this->getIndexField()} . "-$i"] = $row; |
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136 | } |
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137 | } |
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138 | |||
139 | // sort results |
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140 | if ( $descending ) { |
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141 | ksort( $result ); |
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142 | } else { |
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143 | krsort( $result ); |
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144 | } |
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145 | |||
146 | // enforce limit |
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147 | $result = array_slice( $result, 0, $limit ); |
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148 | |||
149 | // get rid of array keys |
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150 | $result = array_values( $result ); |
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151 | |||
152 | return new FakeResultWrapper( $result ); |
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153 | } |
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154 | |||
155 | function getQueryInfo() { |
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156 | list( $tables, $index, $userCond, $join_cond ) = $this->getUserCond(); |
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157 | |||
158 | $user = $this->getUser(); |
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159 | $conds = array_merge( $userCond, $this->getNamespaceCond() ); |
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160 | |||
161 | // Paranoia: avoid brute force searches (bug 17342) |
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162 | View Code Duplication | if ( !$user->isAllowed( 'deletedhistory' ) ) { |
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163 | $conds[] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0'; |
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164 | } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) { |
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165 | $conds[] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) . |
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166 | ' != ' . Revision::SUPPRESSED_USER; |
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167 | } |
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168 | |||
169 | # Don't include orphaned revisions |
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170 | $join_cond['page'] = Revision::pageJoinCond(); |
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171 | # Get the current user name for accounts |
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172 | $join_cond['user'] = Revision::userJoinCond(); |
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173 | |||
174 | $options = []; |
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175 | if ( $index ) { |
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176 | $options['USE INDEX'] = [ 'revision' => $index ]; |
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177 | } |
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178 | |||
179 | $queryInfo = [ |
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180 | 'tables' => $tables, |
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181 | 'fields' => array_merge( |
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182 | Revision::selectFields(), |
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183 | Revision::selectUserFields(), |
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184 | [ 'page_namespace', 'page_title', 'page_is_new', |
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185 | 'page_latest', 'page_is_redirect', 'page_len' ] |
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186 | ), |
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187 | 'conds' => $conds, |
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188 | 'options' => $options, |
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189 | 'join_conds' => $join_cond |
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190 | ]; |
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191 | |||
192 | ChangeTags::modifyDisplayQuery( |
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193 | $queryInfo['tables'], |
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194 | $queryInfo['fields'], |
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195 | $queryInfo['conds'], |
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196 | $queryInfo['join_conds'], |
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197 | $queryInfo['options'], |
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198 | $this->tagFilter |
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199 | ); |
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200 | |||
201 | Hooks::run( 'ContribsPager::getQueryInfo', [ &$this, &$queryInfo ] ); |
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202 | |||
203 | return $queryInfo; |
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204 | } |
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205 | |||
206 | function getUserCond() { |
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207 | $condition = []; |
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208 | $join_conds = []; |
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209 | $tables = [ 'revision', 'page', 'user' ]; |
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210 | $index = false; |
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211 | if ( $this->contribs == 'newbie' ) { |
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212 | $max = $this->mDb->selectField( 'user', 'max(user_id)', false, __METHOD__ ); |
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213 | $condition[] = 'rev_user >' . (int)( $max - $max / 100 ); |
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214 | # ignore local groups with the bot right |
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215 | # @todo FIXME: Global groups may have 'bot' rights |
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216 | $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' ); |
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217 | if ( count( $groupsWithBotPermission ) ) { |
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218 | $tables[] = 'user_groups'; |
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219 | $condition[] = 'ug_group IS NULL'; |
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220 | $join_conds['user_groups'] = [ |
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221 | 'LEFT JOIN', [ |
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222 | 'ug_user = rev_user', |
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223 | 'ug_group' => $groupsWithBotPermission |
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224 | ] |
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225 | ]; |
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226 | } |
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227 | // (T140537) Disallow looking too far in the past for 'newbies' queries. If the user requested |
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228 | // a timestamp offset far in the past such that there are no edits by users with user_ids in |
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229 | // the range, we would end up scanning all revisions from that offset until start of time. |
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230 | $condition[] = 'rev_timestamp > ' . |
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231 | $this->mDb->addQuotes( $this->mDb->timestamp( wfTimestamp() - 30 * 24 * 60 * 60 ) ); |
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232 | } else { |
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233 | $uid = User::idFromName( $this->target ); |
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234 | if ( $uid ) { |
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235 | $condition['rev_user'] = $uid; |
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236 | $index = 'user_timestamp'; |
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237 | } else { |
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238 | $condition['rev_user_text'] = $this->target; |
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239 | $index = 'usertext_timestamp'; |
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240 | } |
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241 | } |
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242 | |||
243 | if ( $this->deletedOnly ) { |
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244 | $condition[] = 'rev_deleted != 0'; |
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245 | } |
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246 | |||
247 | if ( $this->topOnly ) { |
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248 | $condition[] = 'rev_id = page_latest'; |
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249 | } |
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250 | |||
251 | if ( $this->newOnly ) { |
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252 | $condition[] = 'rev_parent_id = 0'; |
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253 | } |
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254 | |||
255 | if ( $this->hideMinor ) { |
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256 | $condition[] = 'rev_minor_edit = 0'; |
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257 | } |
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258 | |||
259 | return [ $tables, $index, $condition, $join_conds ]; |
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260 | } |
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261 | |||
262 | function getNamespaceCond() { |
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263 | if ( $this->namespace !== '' ) { |
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264 | $selectedNS = $this->mDb->addQuotes( $this->namespace ); |
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265 | $eq_op = $this->nsInvert ? '!=' : '='; |
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266 | $bool_op = $this->nsInvert ? 'AND' : 'OR'; |
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267 | |||
268 | if ( !$this->associated ) { |
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269 | return [ "page_namespace $eq_op $selectedNS" ]; |
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270 | } |
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271 | |||
272 | $associatedNS = $this->mDb->addQuotes( |
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273 | MWNamespace::getAssociated( $this->namespace ) |
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274 | ); |
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275 | |||
276 | return [ |
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277 | "page_namespace $eq_op $selectedNS " . |
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278 | $bool_op . |
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279 | " page_namespace $eq_op $associatedNS" |
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280 | ]; |
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281 | } |
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282 | |||
283 | return []; |
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284 | } |
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285 | |||
286 | function getIndexField() { |
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287 | return 'rev_timestamp'; |
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288 | } |
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289 | |||
290 | function doBatchLookups() { |
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291 | # Do a link batch query |
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292 | $this->mResult->seek( 0 ); |
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293 | $parentRevIds = []; |
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294 | $this->mParentLens = []; |
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295 | $batch = new LinkBatch(); |
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296 | # Give some pointers to make (last) links |
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297 | foreach ( $this->mResult as $row ) { |
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298 | if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) { |
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299 | $parentRevIds[] = $row->rev_parent_id; |
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300 | } |
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301 | if ( isset( $row->rev_id ) ) { |
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302 | $this->mParentLens[$row->rev_id] = $row->rev_len; |
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303 | if ( $this->contribs === 'newbie' ) { // multiple users |
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304 | $batch->add( NS_USER, $row->user_name ); |
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305 | $batch->add( NS_USER_TALK, $row->user_name ); |
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306 | } |
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307 | $batch->add( $row->page_namespace, $row->page_title ); |
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308 | } |
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309 | } |
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310 | # Fetch rev_len for revisions not already scanned above |
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311 | $this->mParentLens += Revision::getParentLengths( |
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312 | $this->mDbSecondary, |
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313 | array_diff( $parentRevIds, array_keys( $this->mParentLens ) ) |
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314 | ); |
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315 | $batch->execute(); |
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316 | $this->mResult->seek( 0 ); |
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317 | } |
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318 | |||
319 | /** |
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320 | * @return string |
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321 | */ |
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322 | function getStartBody() { |
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323 | return "<ul class=\"mw-contributions-list\">\n"; |
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324 | } |
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325 | |||
326 | /** |
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327 | * @return string |
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328 | */ |
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329 | function getEndBody() { |
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330 | return "</ul>\n"; |
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331 | } |
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332 | |||
333 | /** |
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334 | * Generates each row in the contributions list. |
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335 | * |
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336 | * Contributions which are marked "top" are currently on top of the history. |
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337 | * For these contributions, a [rollback] link is shown for users with roll- |
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338 | * back privileges. The rollback link restores the most recent version that |
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339 | * was not written by the target user. |
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340 | * |
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341 | * @todo This would probably look a lot nicer in a table. |
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342 | * @param object $row |
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343 | * @return string |
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344 | */ |
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345 | function formatRow( $row ) { |
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346 | |||
347 | $ret = ''; |
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348 | $classes = []; |
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349 | |||
350 | /* |
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351 | * There may be more than just revision rows. To make sure that we'll only be processing |
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352 | * revisions here, let's _try_ to build a revision out of our row (without displaying |
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353 | * notices though) and then trying to grab data from the built object. If we succeed, |
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354 | * we're definitely dealing with revision data and we may proceed, if not, we'll leave it |
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355 | * to extensions to subscribe to the hook to parse the row. |
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356 | */ |
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357 | MediaWiki\suppressWarnings(); |
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358 | try { |
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359 | $rev = new Revision( $row ); |
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360 | $validRevision = (bool)$rev->getId(); |
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361 | } catch ( Exception $e ) { |
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362 | $validRevision = false; |
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363 | } |
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364 | MediaWiki\restoreWarnings(); |
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365 | |||
366 | if ( $validRevision ) { |
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367 | $classes = []; |
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368 | |||
369 | $page = Title::newFromRow( $row ); |
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370 | $link = Linker::link( |
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371 | $page, |
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372 | htmlspecialchars( $page->getPrefixedText() ), |
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373 | [ 'class' => 'mw-contributions-title' ], |
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374 | $page->isRedirect() ? [ 'redirect' => 'no' ] : [] |
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375 | ); |
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376 | # Mark current revisions |
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377 | $topmarktext = ''; |
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378 | $user = $this->getUser(); |
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379 | if ( $row->rev_id === $row->page_latest ) { |
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380 | $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>'; |
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381 | $classes[] = 'mw-contributions-current'; |
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382 | # Add rollback link |
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383 | if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user ) |
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384 | && $page->quickUserCan( 'edit', $user ) |
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385 | ) { |
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386 | $this->preventClickjacking(); |
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387 | $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() ); |
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388 | } |
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389 | } |
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390 | # Is there a visible previous revision? |
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391 | View Code Duplication | if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) { |
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392 | $difftext = Linker::linkKnown( |
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393 | $page, |
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394 | $this->messages['diff'], |
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395 | [], |
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396 | [ |
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397 | 'diff' => 'prev', |
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398 | 'oldid' => $row->rev_id |
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399 | ] |
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400 | ); |
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401 | } else { |
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402 | $difftext = $this->messages['diff']; |
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403 | } |
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404 | $histlink = Linker::linkKnown( |
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405 | $page, |
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406 | $this->messages['hist'], |
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407 | [], |
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408 | [ 'action' => 'history' ] |
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409 | ); |
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410 | |||
411 | if ( $row->rev_parent_id === null ) { |
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412 | // For some reason rev_parent_id isn't populated for this row. |
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413 | // Its rumoured this is true on wikipedia for some revisions (bug 34922). |
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414 | // Next best thing is to have the total number of bytes. |
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415 | $chardiff = ' <span class="mw-changeslist-separator">. .</span> '; |
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416 | $chardiff .= Linker::formatRevisionSize( $row->rev_len ); |
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417 | $chardiff .= ' <span class="mw-changeslist-separator">. .</span> '; |
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418 | } else { |
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419 | $parentLen = 0; |
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420 | if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) { |
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421 | $parentLen = $this->mParentLens[$row->rev_parent_id]; |
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422 | } |
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423 | |||
424 | $chardiff = ' <span class="mw-changeslist-separator">. .</span> '; |
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425 | $chardiff .= ChangesList::showCharacterDifference( |
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426 | $parentLen, |
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427 | $row->rev_len, |
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428 | $this->getContext() |
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429 | ); |
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430 | $chardiff .= ' <span class="mw-changeslist-separator">. .</span> '; |
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431 | } |
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432 | |||
433 | $lang = $this->getLanguage(); |
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434 | $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true ); |
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435 | $date = $lang->userTimeAndDate( $row->rev_timestamp, $user ); |
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436 | if ( $rev->userCan( Revision::DELETED_TEXT, $user ) ) { |
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437 | $d = Linker::linkKnown( |
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438 | $page, |
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439 | htmlspecialchars( $date ), |
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440 | [ 'class' => 'mw-changeslist-date' ], |
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441 | [ 'oldid' => intval( $row->rev_id ) ] |
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442 | ); |
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443 | } else { |
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444 | $d = htmlspecialchars( $date ); |
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445 | } |
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446 | if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) { |
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447 | $d = '<span class="history-deleted">' . $d . '</span>'; |
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448 | } |
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449 | |||
450 | # Show user names for /newbies as there may be different users. |
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451 | # Note that we already excluded rows with hidden user names. |
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452 | if ( $this->contribs == 'newbie' ) { |
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453 | $userlink = ' . . ' . $lang->getDirMark() |
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454 | . Linker::userLink( $rev->getUser(), $rev->getUserText() ); |
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455 | $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams( |
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456 | Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' '; |
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457 | } else { |
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458 | $userlink = ''; |
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459 | } |
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460 | |||
461 | $flags = []; |
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462 | if ( $rev->getParentId() === 0 ) { |
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463 | $flags[] = ChangesList::flag( 'newpage' ); |
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464 | } |
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465 | |||
466 | if ( $rev->isMinor() ) { |
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467 | $flags[] = ChangesList::flag( 'minor' ); |
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468 | } |
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469 | |||
470 | $del = Linker::getRevDeleteLink( $user, $rev, $page ); |
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471 | if ( $del !== '' ) { |
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472 | $del .= ' '; |
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473 | } |
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474 | |||
475 | $diffHistLinks = $this->msg( 'parentheses' ) |
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476 | ->rawParams( $difftext . $this->messages['pipe-separator'] . $histlink ) |
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477 | ->escaped(); |
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478 | |||
479 | # Tags, if any. |
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480 | list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow( |
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481 | $row->ts_tags, |
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482 | 'contributions', |
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483 | $this->getContext() |
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484 | ); |
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485 | $classes = array_merge( $classes, $newClasses ); |
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486 | |||
487 | Hooks::run( 'SpecialContributions::formatRow::flags', [ $this->getContext(), $row, &$flags ] ); |
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488 | |||
489 | $templateParams = [ |
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490 | 'del' => $del, |
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491 | 'timestamp' => $d, |
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492 | 'diffHistLinks' => $diffHistLinks, |
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493 | 'charDifference' => $chardiff, |
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494 | 'flags' => $flags, |
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495 | 'articleLink' => $link, |
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496 | 'userlink' => $userlink, |
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497 | 'logText' => $comment, |
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498 | 'topmarktext' => $topmarktext, |
||
499 | 'tagSummary' => $tagSummary, |
||
500 | ]; |
||
501 | |||
502 | # Denote if username is redacted for this edit |
||
503 | if ( $rev->isDeleted( Revision::DELETED_USER ) ) { |
||
504 | $templateParams['rev-deleted-user-contribs'] = |
||
505 | $this->msg( 'rev-deleted-user-contribs' )->escaped(); |
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506 | } |
||
507 | |||
508 | $templateParser = new TemplateParser(); |
||
509 | $ret = $templateParser->processTemplate( |
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510 | 'SpecialContributionsLine', |
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511 | $templateParams |
||
512 | ); |
||
513 | } |
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514 | |||
515 | // Let extensions add data |
||
516 | Hooks::run( 'ContributionsLineEnding', [ $this, &$ret, $row, &$classes ] ); |
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517 | |||
518 | // TODO: Handle exceptions in the catch block above. Do any extensions rely on |
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519 | // receiving empty rows? |
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520 | |||
521 | if ( $classes === [] && $ret === '' ) { |
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522 | wfDebug( "Dropping Special:Contribution row that could not be formatted\n" ); |
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523 | return "<!-- Could not format Special:Contribution row. -->\n"; |
||
524 | } |
||
525 | |||
526 | // FIXME: The signature of the ContributionsLineEnding hook makes it |
||
527 | // very awkward to move this LI wrapper into the template. |
||
528 | return Html::rawElement( 'li', [ 'class' => $classes ], $ret ) . "\n"; |
||
529 | } |
||
530 | |||
531 | /** |
||
532 | * Overwrite Pager function and return a helpful comment |
||
533 | * @return string |
||
534 | */ |
||
535 | function getSqlComment() { |
||
536 | if ( $this->namespace || $this->deletedOnly ) { |
||
537 | // potentially slow, see CR r58153 |
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538 | return 'contributions page filtered for namespace or RevisionDeleted edits'; |
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539 | } else { |
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540 | return 'contributions page unfiltered'; |
||
541 | } |
||
542 | } |
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543 | |||
544 | protected function preventClickjacking() { |
||
545 | $this->preventClickjacking = true; |
||
546 | } |
||
547 | |||
548 | /** |
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549 | * @return bool |
||
550 | */ |
||
551 | public function getPreventClickjacking() { |
||
552 | return $this->preventClickjacking; |
||
553 | } |
||
554 | } |
||
555 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: