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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 SpecialPage |
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20 | */ |
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21 | |||
22 | /** |
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23 | * Special page for adding and removing change tags to individual revisions. |
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24 | * A lot of this is copied out of SpecialRevisiondelete. |
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25 | * |
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26 | * @ingroup SpecialPage |
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27 | * @since 1.25 |
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28 | */ |
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29 | class SpecialEditTags extends UnlistedSpecialPage { |
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30 | /** @var bool Was the DB modified in this request */ |
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31 | protected $wasSaved = false; |
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32 | |||
33 | /** @var bool True if the submit button was clicked, and the form was posted */ |
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34 | private $submitClicked; |
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35 | |||
36 | /** @var array Target ID list */ |
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37 | private $ids; |
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38 | |||
39 | /** @var Title Title object for target parameter */ |
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40 | private $targetObj; |
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41 | |||
42 | /** @var string Deletion type, may be revision or logentry */ |
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43 | private $typeName; |
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44 | |||
45 | /** @var ChangeTagsList Storing the list of items to be tagged */ |
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46 | private $revList; |
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47 | |||
48 | /** @var bool Whether user is allowed to perform the action */ |
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49 | private $isAllowed; |
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50 | |||
51 | /** @var string */ |
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52 | private $reason; |
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53 | |||
54 | public function __construct() { |
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55 | parent::__construct( 'EditTags', 'changetags' ); |
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56 | } |
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57 | |||
58 | public function doesWrites() { |
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59 | return true; |
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60 | } |
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61 | |||
62 | public function execute( $par ) { |
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63 | $this->checkPermissions(); |
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64 | $this->checkReadOnly(); |
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65 | |||
66 | $output = $this->getOutput(); |
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67 | $user = $this->getUser(); |
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68 | $request = $this->getRequest(); |
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69 | |||
70 | // Check blocks |
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71 | if ( $user->isBlocked() ) { |
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72 | throw new UserBlockedError( $user->getBlock() ); |
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73 | } |
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74 | |||
75 | $this->setHeaders(); |
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76 | $this->outputHeader(); |
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77 | |||
78 | $this->getOutput()->addModules( [ 'mediawiki.special.edittags', |
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79 | 'mediawiki.special.edittags.styles' ] ); |
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80 | |||
81 | $this->submitClicked = $request->wasPosted() && $request->getBool( 'wpSubmit' ); |
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82 | |||
83 | // Handle our many different possible input types |
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84 | $ids = $request->getVal( 'ids' ); |
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85 | View Code Duplication | if ( !is_null( $ids ) ) { |
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86 | // Allow CSV from the form hidden field, or a single ID for show/hide links |
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87 | $this->ids = explode( ',', $ids ); |
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88 | } else { |
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89 | // Array input |
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90 | $this->ids = array_keys( $request->getArray( 'ids', [] ) ); |
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91 | } |
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92 | $this->ids = array_unique( array_filter( $this->ids ) ); |
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93 | |||
94 | // No targets? |
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95 | if ( count( $this->ids ) == 0 ) { |
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96 | throw new ErrorPageError( 'tags-edit-nooldid-title', 'tags-edit-nooldid-text' ); |
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97 | } |
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98 | |||
99 | $this->typeName = $request->getVal( 'type' ); |
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100 | $this->targetObj = Title::newFromText( $request->getText( 'target' ) ); |
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101 | |||
102 | // sanity check of parameter |
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103 | switch ( $this->typeName ) { |
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104 | case 'logentry': |
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105 | case 'logging': |
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106 | $this->typeName = 'logentry'; |
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107 | break; |
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108 | default: |
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109 | $this->typeName = 'revision'; |
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110 | break; |
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111 | } |
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112 | |||
113 | // Allow the list type to adjust the passed target |
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114 | // Yuck! Copied straight out of SpecialRevisiondelete, but it does exactly |
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115 | // what we want |
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116 | $this->targetObj = RevisionDeleter::suggestTarget( |
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117 | $this->typeName === 'revision' ? 'revision' : 'logging', |
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118 | $this->targetObj, |
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119 | $this->ids |
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120 | ); |
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121 | |||
122 | $this->isAllowed = $user->isAllowed( 'changetags' ); |
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123 | |||
124 | $this->reason = $request->getVal( 'wpReason' ); |
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125 | // We need a target page! |
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126 | if ( is_null( $this->targetObj ) ) { |
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127 | $output->addWikiMsg( 'undelete-header' ); |
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128 | return; |
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129 | } |
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130 | // Give a link to the logs/hist for this page |
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131 | $this->showConvenienceLinks(); |
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132 | |||
133 | // Either submit or create our form |
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134 | if ( $this->isAllowed && $this->submitClicked ) { |
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135 | $this->submit(); |
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136 | } else { |
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137 | $this->showForm(); |
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138 | } |
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139 | |||
140 | // Show relevant lines from the tag log |
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141 | $tagLogPage = new LogPage( 'tag' ); |
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142 | $output->addHTML( "<h2>" . $tagLogPage->getName()->escaped() . "</h2>\n" ); |
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143 | LogEventsList::showLogExtract( |
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144 | $output, |
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145 | 'tag', |
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146 | $this->targetObj, |
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147 | '', /* user */ |
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148 | [ 'lim' => 25, 'conds' => [], 'useMaster' => $this->wasSaved ] |
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149 | ); |
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150 | } |
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151 | |||
152 | /** |
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153 | * Show some useful links in the subtitle |
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154 | */ |
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155 | protected function showConvenienceLinks() { |
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156 | // Give a link to the logs/hist for this page |
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157 | if ( $this->targetObj ) { |
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158 | // Also set header tabs to be for the target. |
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159 | $this->getSkin()->setRelevantTitle( $this->targetObj ); |
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160 | |||
161 | $links = []; |
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162 | $links[] = Linker::linkKnown( |
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163 | SpecialPage::getTitleFor( 'Log' ), |
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164 | $this->msg( 'viewpagelogs' )->escaped(), |
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165 | [], |
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166 | [ |
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167 | 'page' => $this->targetObj->getPrefixedText(), |
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168 | 'hide_tag_log' => '0', |
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169 | ] |
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170 | ); |
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171 | if ( !$this->targetObj->isSpecialPage() ) { |
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172 | // Give a link to the page history |
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173 | $links[] = Linker::linkKnown( |
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174 | $this->targetObj, |
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175 | $this->msg( 'pagehist' )->escaped(), |
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176 | [], |
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177 | [ 'action' => 'history' ] |
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178 | ); |
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179 | } |
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180 | // Link to Special:Tags |
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181 | $links[] = Linker::linkKnown( |
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182 | SpecialPage::getTitleFor( 'Tags' ), |
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183 | $this->msg( 'tags-edit-manage-link' )->escaped() |
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184 | ); |
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185 | // Logs themselves don't have histories or archived revisions |
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186 | $this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) ); |
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187 | } |
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188 | } |
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189 | |||
190 | /** |
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191 | * Get the list object for this request |
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192 | * @return ChangeTagsList |
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193 | */ |
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194 | protected function getList() { |
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195 | if ( is_null( $this->revList ) ) { |
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196 | $this->revList = ChangeTagsList::factory( $this->typeName, $this->getContext(), |
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197 | $this->targetObj, $this->ids ); |
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198 | } |
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199 | |||
200 | return $this->revList; |
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201 | } |
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202 | |||
203 | /** |
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204 | * Show a list of items that we will operate on, and show a form which allows |
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205 | * the user to modify the tags applied to those items. |
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206 | */ |
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207 | protected function showForm() { |
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208 | $userAllowed = true; |
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209 | |||
210 | $out = $this->getOutput(); |
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211 | // Messages: tags-edit-revision-selected, tags-edit-logentry-selected |
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212 | $out->wrapWikiMsg( "<strong>$1</strong>", [ |
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213 | "tags-edit-{$this->typeName}-selected", |
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214 | $this->getLanguage()->formatNum( count( $this->ids ) ), |
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215 | $this->targetObj->getPrefixedText() |
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216 | ] ); |
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217 | |||
218 | $this->addHelpLink( 'Help:Tags' ); |
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219 | $out->addHTML( "<ul>" ); |
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220 | |||
221 | $numRevisions = 0; |
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222 | // Live revisions... |
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223 | $list = $this->getList(); |
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224 | // @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed |
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225 | for ( $list->reset(); $list->current(); $list->next() ) { |
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226 | // @codingStandardsIgnoreEnd |
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227 | $item = $list->current(); |
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228 | $numRevisions++; |
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229 | $out->addHTML( $item->getHTML() ); |
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230 | } |
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231 | |||
232 | if ( !$numRevisions ) { |
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233 | throw new ErrorPageError( 'tags-edit-nooldid-title', 'tags-edit-nooldid-text' ); |
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234 | } |
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235 | |||
236 | $out->addHTML( "</ul>" ); |
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237 | // Explanation text |
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238 | $out->wrapWikiMsg( '<p>$1</p>', "tags-edit-{$this->typeName}-explanation" ); |
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239 | |||
240 | // Show form if the user can submit |
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241 | if ( $this->isAllowed ) { |
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242 | $form = Xml::openElement( 'form', [ 'method' => 'post', |
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243 | 'action' => $this->getPageTitle()->getLocalURL( [ 'action' => 'submit' ] ), |
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244 | 'id' => 'mw-revdel-form-revisions' ] ) . |
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245 | Xml::fieldset( $this->msg( "tags-edit-{$this->typeName}-legend", |
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246 | count( $this->ids ) )->text() ) . |
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247 | $this->buildCheckBoxes() . |
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248 | Xml::openElement( 'table' ) . |
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249 | "<tr>\n" . |
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250 | '<td class="mw-label">' . |
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251 | Xml::label( $this->msg( 'tags-edit-reason' )->text(), 'wpReason' ) . |
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252 | '</td>' . |
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253 | '<td class="mw-input">' . |
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254 | Xml::input( |
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255 | 'wpReason', |
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256 | 60, |
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257 | $this->reason, |
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258 | [ 'id' => 'wpReason', 'maxlength' => 100 ] |
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259 | ) . |
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260 | '</td>' . |
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261 | "</tr><tr>\n" . |
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262 | '<td></td>' . |
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263 | '<td class="mw-submit">' . |
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264 | Xml::submitButton( $this->msg( "tags-edit-{$this->typeName}-submit", |
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265 | $numRevisions )->text(), [ 'name' => 'wpSubmit' ] ) . |
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266 | '</td>' . |
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267 | "</tr>\n" . |
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268 | Xml::closeElement( 'table' ) . |
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269 | Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) . |
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270 | Html::hidden( 'target', $this->targetObj->getPrefixedText() ) . |
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271 | Html::hidden( 'type', $this->typeName ) . |
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272 | Html::hidden( 'ids', implode( ',', $this->ids ) ) . |
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273 | Xml::closeElement( 'fieldset' ) . "\n" . |
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274 | Xml::closeElement( 'form' ) . "\n"; |
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275 | } else { |
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276 | $form = ''; |
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277 | } |
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278 | $out->addHTML( $form ); |
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279 | } |
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280 | |||
281 | /** |
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282 | * @return string HTML |
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283 | */ |
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284 | protected function buildCheckBoxes() { |
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285 | // If there is just one item, provide the user with a multi-select field |
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286 | $list = $this->getList(); |
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287 | $tags = []; |
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288 | if ( $list->length() == 1 ) { |
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289 | $list->reset(); |
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290 | $tags = $list->current()->getTags(); |
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291 | if ( $tags ) { |
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292 | $tags = explode( ',', $tags ); |
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293 | } else { |
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294 | $tags = []; |
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295 | } |
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296 | |||
297 | $html = '<table id="mw-edittags-tags-selector">'; |
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298 | $html .= '<tr><td>' . $this->msg( 'tags-edit-existing-tags' )->escaped() . |
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299 | '</td><td>'; |
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300 | if ( $tags ) { |
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301 | $html .= $this->getLanguage()->commaList( array_map( 'htmlspecialchars', $tags ) ); |
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302 | } else { |
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303 | $html .= $this->msg( 'tags-edit-existing-tags-none' )->parse(); |
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304 | } |
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305 | $html .= '</td></tr>'; |
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306 | $tagSelect = $this->getTagSelect( $tags, $this->msg( 'tags-edit-new-tags' )->plain() ); |
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307 | $html .= '<tr><td>' . $tagSelect[0] . '</td><td>' . $tagSelect[1]; |
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308 | } else { |
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309 | // Otherwise, use a multi-select field for adding tags, and a list of |
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310 | // checkboxes for removing them |
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311 | |||
312 | // @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed |
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313 | for ( $list->reset(); $list->current(); $list->next() ) { |
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314 | // @codingStandardsIgnoreEnd |
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315 | $currentTags = $list->current()->getTags(); |
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316 | if ( $currentTags ) { |
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317 | $tags = array_merge( $tags, explode( ',', $currentTags ) ); |
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318 | } |
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319 | } |
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320 | $tags = array_unique( $tags ); |
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321 | |||
322 | $html = '<table id="mw-edittags-tags-selector-multi"><tr><td>'; |
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323 | $tagSelect = $this->getTagSelect( [], $this->msg( 'tags-edit-add' )->plain() ); |
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324 | $html .= '<p>' . $tagSelect[0] . '</p>' . $tagSelect[1] . '</td><td>'; |
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325 | $html .= Xml::element( 'p', null, $this->msg( 'tags-edit-remove' )->plain() ); |
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326 | $html .= Xml::checkLabel( $this->msg( 'tags-edit-remove-all-tags' )->plain(), |
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327 | 'wpRemoveAllTags', 'mw-edittags-remove-all' ); |
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328 | $i = 0; // used for generating checkbox IDs only |
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329 | foreach ( $tags as $tag ) { |
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330 | $html .= Xml::element( 'br' ) . "\n" . Xml::checkLabel( $tag, |
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331 | 'wpTagsToRemove[]', 'mw-edittags-remove-' . $i++, false, [ |
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332 | 'value' => $tag, |
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333 | 'class' => 'mw-edittags-remove-checkbox', |
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334 | ] ); |
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335 | } |
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336 | } |
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337 | |||
338 | // also output the tags currently applied as a hidden form field, so we |
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339 | // know what to remove from the revision/log entry when the form is submitted |
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340 | $html .= Html::hidden( 'wpExistingTags', implode( ',', $tags ) ); |
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341 | $html .= '</td></tr></table>'; |
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342 | |||
343 | return $html; |
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344 | } |
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345 | |||
346 | /** |
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347 | * Returns a <select multiple> element with a list of change tags that can be |
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348 | * applied by users. |
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349 | * |
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350 | * @param array $selectedTags The tags that should be preselected in the |
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351 | * list. Any tags in this list, but not in the list returned by |
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352 | * ChangeTags::listExplicitlyDefinedTags, will be appended to the <select> |
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353 | * element. |
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354 | * @param string $label The text of a <label> to precede the <select> |
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355 | * @return array HTML <label> element at index 0, HTML <select> element at |
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356 | * index 1 |
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357 | */ |
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358 | protected function getTagSelect( $selectedTags, $label ) { |
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359 | $result = []; |
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360 | $result[0] = Xml::label( $label, 'mw-edittags-tag-list' ); |
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361 | |||
362 | $select = new XmlSelect( 'wpTagList[]', 'mw-edittags-tag-list', $selectedTags ); |
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363 | $select->setAttribute( 'multiple', 'multiple' ); |
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364 | $select->setAttribute( 'size', '8' ); |
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365 | |||
366 | $tags = ChangeTags::listExplicitlyDefinedTags(); |
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367 | $tags = array_unique( array_merge( $tags, $selectedTags ) ); |
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368 | |||
369 | // Values of $tags are also used as <option> labels |
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370 | $select->addOptions( array_combine( $tags, $tags ) ); |
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371 | |||
372 | $result[1] = $select->getHTML(); |
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373 | return $result; |
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374 | } |
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375 | |||
376 | /** |
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377 | * UI entry point for form submission. |
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378 | * @throws PermissionsError |
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379 | * @return bool |
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380 | */ |
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381 | protected function submit() { |
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382 | // Check edit token on submission |
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383 | $request = $this->getRequest(); |
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384 | $token = $request->getVal( 'wpEditToken' ); |
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385 | View Code Duplication | if ( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) { |
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386 | $this->getOutput()->addWikiMsg( 'sessionfailure' ); |
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387 | return false; |
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388 | } |
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389 | |||
390 | // Evaluate incoming request data |
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391 | $tagList = $request->getArray( 'wpTagList' ); |
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392 | if ( is_null( $tagList ) ) { |
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393 | $tagList = []; |
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394 | } |
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395 | $existingTags = $request->getVal( 'wpExistingTags' ); |
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396 | if ( is_null( $existingTags ) || $existingTags === '' ) { |
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397 | $existingTags = []; |
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398 | } else { |
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399 | $existingTags = explode( ',', $existingTags ); |
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400 | } |
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401 | |||
402 | if ( count( $this->ids ) > 1 ) { |
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403 | // multiple revisions selected |
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404 | $tagsToAdd = $tagList; |
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405 | if ( $request->getBool( 'wpRemoveAllTags' ) ) { |
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406 | $tagsToRemove = $existingTags; |
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407 | } else { |
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408 | $tagsToRemove = $request->getArray( 'wpTagsToRemove' ); |
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409 | } |
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410 | } else { |
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411 | // single revision selected |
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412 | // The user tells us which tags they want associated to the revision. |
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413 | // We have to figure out which ones to add, and which to remove. |
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414 | $tagsToAdd = array_diff( $tagList, $existingTags ); |
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415 | $tagsToRemove = array_diff( $existingTags, $tagList ); |
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416 | } |
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417 | |||
418 | if ( !$tagsToAdd && !$tagsToRemove ) { |
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419 | $status = Status::newFatal( 'tags-edit-none-selected' ); |
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420 | } else { |
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421 | $status = $this->getList()->updateChangeTagsOnAll( $tagsToAdd, |
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422 | $tagsToRemove, null, $this->reason, $this->getUser() ); |
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423 | } |
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424 | |||
425 | if ( $status->isGood() ) { |
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426 | $this->success(); |
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427 | return true; |
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428 | } else { |
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429 | $this->failure( $status ); |
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430 | return false; |
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431 | } |
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432 | } |
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433 | |||
434 | /** |
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435 | * Report that the submit operation succeeded |
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436 | */ |
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437 | View Code Duplication | protected function success() { |
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438 | $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) ); |
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439 | $this->getOutput()->wrapWikiMsg( "<div class=\"successbox\">\n$1\n</div>", |
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440 | 'tags-edit-success' ); |
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441 | $this->wasSaved = true; |
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442 | $this->revList->reloadFromMaster(); |
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443 | $this->reason = ''; // no need to spew the reason back at the user |
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444 | $this->showForm(); |
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445 | } |
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446 | |||
447 | /** |
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448 | * Report that the submit operation failed |
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449 | * @param Status $status |
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450 | */ |
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451 | View Code Duplication | protected function failure( $status ) { |
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452 | $this->getOutput()->setPageTitle( $this->msg( 'actionfailed' ) ); |
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453 | $this->getOutput()->addWikiText( '<div class="errorbox">' . |
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454 | $status->getWikiText( 'tags-edit-failure' ) . |
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455 | '</div>' |
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456 | ); |
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457 | $this->showForm(); |
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458 | } |
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459 | |||
460 | public function getDescription() { |
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461 | return $this->msg( 'tags-edit-title' )->text(); |
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462 | } |
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463 | |||
464 | protected function getGroupName() { |
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465 | return 'pagetools'; |
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466 | } |
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467 | } |
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468 |
Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: