InputBox.php

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<?php
class InputBox {
 
    /* Fields */
 
    private $mParser;
    private $mType = '';
    private $mWidth = 50;
    private $mPreload = null;
    private $mPreloadparams = null;
    private $mEditIntro = null;
    private $mUseVE = null;
    private $mSummary = null;
    private $mNosummary = null;
    private $mMinor = null;
    private $mPage = '';
    private $mBR = 'yes';
    private $mDefaultText = '';
    private $mPlaceholderText = '';
    private $mBGColor = 'transparent';
    private $mButtonLabel = '';
    private $mSearchButtonLabel = '';
    private $mFullTextButton = '';
    private $mLabelText = '';
    private $mHidden = '';
    private $mNamespaces = '';
    private $mID = '';
    private $mInline = false;
    private $mPrefix = '';
    private $mDir = '';
    private $mSearchFilter = '';
    private $mTour = '';
 
    /* Functions */
 
    public function __construct( $parser ) {
        $this->mParser = $parser;
        // Default value for dir taken from the page language (bug 37018)
        $this->mDir = $this->mParser->getTargetLanguage()->getDir();
        // Split caches by language, to make sure visitors do not see a cached
        // version in a random language (since labels are in the user language)
        $this->mParser->getOptions()->getUserLangObj();
        $this->mParser->getOutput()->addModuleStyles( [
            'ext.inputBox.styles',
            'mediawiki.ui.input',
            'mediawiki.ui.checkbox',
        ] );
    }
 
    public function render() {
        // Handle various types
        switch ( $this->mType ) {
            case 'create':
            case 'comment':
                $this->mParser->getOutput()->addModules( 'ext.inputBox' );
                return $this->getCreateForm();
            case 'move':
                return $this->getMoveForm();
            case 'commenttitle':
                return $this->getCommentForm();
            case 'search':
                return $this->getSearchForm( 'search' );
            case 'fulltext':
                return $this->getSearchForm( 'fulltext' );
            case 'search2':
                return $this->getSearchForm2();
            default:
                return Xml::tags( 'div', null,
                    Xml::element( 'strong',
                        [ 'class' => 'error' ],
                        strlen( $this->mType ) > 0
                            ? wfMessage( 'inputbox-error-bad-type', $this->mType )->text()
                            : wfMessage( 'inputbox-error-no-type' )->text()
                    )
                );
        }
    }
 
    private function getEditActionArgs() {
        // default is wikitext editor
        $args = [
            'name' => 'action',
            'value' => 'edit',
        ];
        // check, if VE is installed and VE editor is requested
        if ( $this->shouldUseVE() ) {
            $args = [
                'name' => 'veaction',
                'value' => 'edit',
            ];
        }
        return $args;
    }
 
    private function getLinebreakClasses() {
        return strtolower( $this->mBR ) === '<br />' ? 'mw-inputbox-input ' : '';
    }
 
    public function getSearchForm( $type ) {
        global $wgContLang, $wgNamespaceAliases;
 
        // Use button label fallbacks
        if ( !$this->mButtonLabel ) {
            $this->mButtonLabel = wfMessage( 'inputbox-tryexact' )->text();
        }
        if ( !$this->mSearchButtonLabel ) {
            $this->mSearchButtonLabel = wfMessage( 'inputbox-searchfulltext' )->text();
        }
        if ( $this->mID !== '' ) {
            $idArray = [ 'id' => Sanitizer::escapeIdForAttribute( $this->mID ) ];
        } else {
            $idArray = [];
        }
        // We need a unqiue id to link <label> to checkboxes, but also
        // want multiple <inputbox>'s to not be invalid html
        $idRandStr = Sanitizer::escapeIdForAttribute( '-' . $this->mID . wfRandom() );
 
        // Build HTML
        $htmlOut = Xml::openElement( 'div',
            [
                'class' => 'mw-inputbox-centered',
                'style' => $this->bgColorStyle(),
            ]
        );
        $htmlOut .= Xml::openElement( 'form',
            [
                'name' => 'searchbox',
                'class' => 'searchbox',
                'action' => SpecialPage::getTitleFor( 'Search' )->getLocalUrl(),
            ] + $idArray
        );
        $htmlOut .= Xml::element( 'input',
            [
                'class' => $this->getLinebreakClasses() . 'searchboxInput mw-ui-input mw-ui-input-inline',
                'name' => 'search',
                'type' => $this->mHidden ? 'hidden' : 'text',
                'value' => $this->mDefaultText,
                'placeholder' => $this->mPlaceholderText,
                'size' => $this->mWidth,
                'dir' => $this->mDir,
            ]
        );
 
        if ( $this->mPrefix != '' ) {
            $htmlOut .= Html::hidden( 'prefix', $this->mPrefix );
        }
 
        if ( $this->mSearchFilter != '' ) {
            $htmlOut .= Html::hidden( 'searchfilter', $this->mSearchFilter );
        }
 
        if ( $this->mTour != '' ) {
            $htmlOut .= Html::hidden( 'tour', $this->mTour );
        }
 
        $htmlOut .= $this->mBR;
 
        // Determine namespace checkboxes
        $namespacesArray = explode( ',', $this->mNamespaces );
        if ( $this->mNamespaces ) {
            $namespaces = $wgContLang->getNamespaces();
            $nsAliases = array_merge( $wgContLang->getNamespaceAliases(), $wgNamespaceAliases );
            $showNamespaces = [];
            $checkedNS = [];
            // Check for valid namespaces
            foreach ( $namespacesArray as $userNS ) {
                $userNS = trim( $userNS ); // no whitespace
 
                // Namespace needs to be checked if flagged with "**"
                if ( strpos( $userNS, '**' ) ) {
                    $userNS = str_replace( '**', '', $userNS );
                    $checkedNS[$userNS] = true;
                }
 
                $mainMsg = wfMessage( 'inputbox-ns-main' )->inContentLanguage()->text();
                if ( $userNS == 'Main' || $userNS == $mainMsg ) {
                    $i = 0;
                } elseif ( array_search( $userNS, $namespaces ) ) {
                    $i = array_search( $userNS, $namespaces );
                } elseif ( isset( $nsAliases[$userNS] ) ) {
                    $i = $nsAliases[$userNS];
                } else {
                    continue; // Namespace not recognized, skip
                }
                $showNamespaces[$i] = $userNS;
                if ( isset( $checkedNS[$userNS] ) && $checkedNS[$userNS] ) {
                    $checkedNS[$i] = true;
                }
            }
 
            // Show valid namespaces
            foreach ( $showNamespaces as $i => $name ) {
                $checked = [];
                // Namespace flagged with "**" or if it's the only one
                if ( ( isset( $checkedNS[$i] ) && $checkedNS[$i] ) || count( $showNamespaces ) == 1 ) {
                    $checked = [ 'checked' => 'checked' ];
                }
 
                if ( count( $showNamespaces ) == 1 ) {
                    // Checkbox
                    $htmlOut .= Xml::element( 'input',
                        [
                            'type' => 'hidden',
                            'name' => 'ns' . $i,
                            'value' => 1,
                            'id' => 'mw-inputbox-ns' . $i . $idRandStr
                        ] + $checked
                    );
                } else {
                    // Checkbox
                    $htmlOut .= ' <div class="mw-inputbox-element mw-ui-checkbox">';
                    $htmlOut .= Xml::element( 'input',
                        [
                            'type' => 'checkbox',
                            'name' => 'ns' . $i,
                            'value' => 1,
                            'id' => 'mw-inputbox-ns' . $i . $idRandStr
                        ] + $checked
                    );
                    // Label
                    $htmlOut .= Xml::label( $name, 'mw-inputbox-ns' . $i . $idRandStr );
                    $htmlOut .= '</div> ';
                }
            }
 
            // Line break
            $htmlOut .= $this->mBR;
        } elseif ( $type == 'search' ) {
            // Go button
            $htmlOut .= Xml::element( 'input',
                [
                    'type' => 'submit',
                    'name' => 'go',
                    'class' => 'mw-ui-button',
                    'value' => $this->mButtonLabel
                ]
            );
            $htmlOut .= '&#160;';
        }
 
        // Search button
        $htmlOut .= Xml::element( 'input',
            [
                'type' => 'submit',
                'name' => 'fulltext',
                'class' => 'mw-ui-button',
                'value' => $this->mSearchButtonLabel
            ]
        );
 
        // Hidden fulltext param for IE (bug 17161)
        if ( $type == 'fulltext' ) {
            $htmlOut .= Html::hidden( 'fulltext', 'Search' );
        }
 
        $htmlOut .= Xml::closeElement( 'form' );
        $htmlOut .= Xml::closeElement( 'div' );
 
        // Return HTML
        return $htmlOut;
    }
 
    public function getSearchForm2() {
        // Use button label fallbacks
        if ( !$this->mButtonLabel ) {
            $this->mButtonLabel = wfMessage( 'inputbox-tryexact' )->text();
        }
 
        if ( $this->mID !== '' ) {
            $unescapedID = $this->mID;
        } else {
            // The label element needs a unique id, use
            // random number to avoid multiple input boxes
            // having conflicts.
            $unescapedID = wfRandom();
        }
        $id = Sanitizer::escapeIdForAttribute( $unescapedID );
        $htmlLabel = '';
        if ( isset( $this->mLabelText ) && strlen( trim( $this->mLabelText ) ) ) {
            $htmlLabel = Xml::openElement( 'label', [ 'for' => 'bodySearchInput' . $id ] );
            $htmlLabel .= $this->mParser->recursiveTagParse( $this->mLabelText );
            $htmlLabel .= Xml::closeElement( 'label' );
        }
        $htmlOut = Xml::openElement( 'form',
            [
                'name' => 'bodySearch' . $id,
                'id' => 'bodySearch' . $id,
                'class' => 'bodySearch' . ( $this->mInline ? ' mw-inputbox-inline' : '' ),
                'action' => SpecialPage::getTitleFor( 'Search' )->getLocalUrl(),
            ]
        );
        $htmlOut .= Xml::openElement( 'div',
            [
                'class' => 'bodySearchWrap' . ( $this->mInline ? ' mw-inputbox-inline' : '' ),
                'style' => $this->bgColorStyle(),
            ]
        );
        $htmlOut .= $htmlLabel;
        $htmlOut .= Xml::element( 'input',
            [
                'type' => $this->mHidden ? 'hidden' : 'text',
                'name' => 'search',
                'class' => 'mw-ui-input mw-ui-input-inline',
                'size' => $this->mWidth,
                'id' => 'bodySearchInput' . $id,
                'dir' => $this->mDir,
            ]
        );
        $htmlOut .= '&#160;' . Xml::element( 'input',
            [
                'type' => 'submit',
                'name' => 'go',
                'value' => $this->mButtonLabel,
                'class' => 'mw-ui-button',
            ]
        );
 
        // Better testing needed here!
        if ( !empty( $this->mFullTextButton ) ) {
            $htmlOut .= Xml::element( 'input',
                [
                    'type' => 'submit',
                    'name' => 'fulltext',
                    'class' => 'mw-ui-button',
                    'value' => $this->mSearchButtonLabel
                ]
            );
        }
 
        $htmlOut .= Xml::closeElement( 'div' );
        $htmlOut .= Xml::closeElement( 'form' );
 
        // Return HTML
        return $htmlOut;
    }
 
    public function getCreateForm() {
        global $wgScript;
 
        if ( $this->mType == "comment" ) {
            if ( !$this->mButtonLabel ) {
                $this->mButtonLabel = wfMessage( 'inputbox-postcomment' )->text();
            }
        } else {
            if ( !$this->mButtonLabel ) {
                $this->mButtonLabel = wfMessage( 'inputbox-createarticle' )->text();
            }
        }
 
        $htmlOut = Xml::openElement( 'div',
            [
                'class' => 'mw-inputbox-centered',
                'style' => $this->bgColorStyle(),
            ]
        );
        $createBoxParams = [
            'name' => 'createbox',
            'class' => 'createbox',
            'action' => $wgScript,
            'method' => 'get'
        ];
        if ( $this->mID !== '' ) {
            $createBoxParams['id'] = Sanitizer::escapeIdForAttribute( $this->mID );
        }
        $htmlOut .= Xml::openElement( 'form', $createBoxParams );
        $editArgs = $this->getEditActionArgs();
        $htmlOut .= Html::hidden( $editArgs['name'], $editArgs['value'] );
        if ( $this->mPreload !== null ) {
            $htmlOut .= Html::hidden( 'preload', $this->mPreload );
        }
        if ( is_array( $this->mPreloadparams ) ) {
            foreach ( $this->mPreloadparams as $preloadparams ) {
                $htmlOut .= Html::hidden( 'preloadparams[]', $preloadparams );
            }
        }
        if ( $this->mEditIntro !== null ) {
            $htmlOut .= Html::hidden( 'editintro', $this->mEditIntro );
        }
        if ( $this->mSummary !== null ) {
            $htmlOut .= Html::hidden( 'summary', $this->mSummary );
        }
        if ( $this->mNosummary !== null ) {
            $htmlOut .= Html::hidden( 'nosummary', $this->mNosummary );
        }
        if ( $this->mPrefix !== '' ) {
            $htmlOut .= Html::hidden( 'prefix', $this->mPrefix );
        }
        if ( $this->mMinor !== null ) {
            $htmlOut .= Html::hidden( 'minor', $this->mMinor );
        }
        if ( $this->mType == 'comment' ) {
            $htmlOut .= Html::hidden( 'section', 'new' );
        }
        $htmlOut .= Xml::openElement( 'input',
            [
                'type' => $this->mHidden ? 'hidden' : 'text',
                'name' => 'title',
                'class' => $this->getLinebreakClasses() .
                    'mw-ui-input mw-ui-input-inline createboxInput',
                'value' => $this->mDefaultText,
                'placeholder' => $this->mPlaceholderText,
                'size' => $this->mWidth,
                'dir' => $this->mDir,
            ]
        );
        $htmlOut .= $this->mBR;
        $htmlOut .= Xml::openElement( 'input',
            [
                'type' => 'submit',
                'name' => 'create',
                'class' => 'mw-ui-button mw-ui-progressive createboxButton',
                'value' => $this->mButtonLabel
            ]
        );
        $htmlOut .= Xml::closeElement( 'form' );
        $htmlOut .= Xml::closeElement( 'div' );
 
        // Return HTML
        return $htmlOut;
    }
 
    public function getMoveForm() {
        global $wgScript;
 
        if ( !$this->mButtonLabel ) {
            $this->mButtonLabel = wfMessage( 'inputbox-movearticle' )->text();
        }
 
        $htmlOut = Xml::openElement( 'div',
            [
                'class' => 'mw-inputbox-centered',
                'style' => $this->bgColorStyle(),
            ]
        );
        $moveBoxParams = [
            'name' => 'movebox',
            'class' => 'mw-movebox',
            'action' => $wgScript,
            'method' => 'get'
        ];
        if ( $this->mID !== '' ) {
            $moveBoxParams['id'] = Sanitizer::escapeIdForAttribute( $this->mID );
        }
        $htmlOut .= Xml::openElement( 'form', $moveBoxParams );
        $htmlOut .= Html::hidden( 'title',
            SpecialPage::getTitleFor( 'Movepage', $this->mPage )->getPrefixedText() );
        $htmlOut .= Html::hidden( 'wpReason', $this->mSummary );
        $htmlOut .= Html::hidden( 'prefix', $this->mPrefix );
        $htmlOut .= Xml::openElement( 'input',
            [
                'type' => $this->mHidden ? 'hidden' : 'text',
                'name' => 'wpNewTitle',
                'class' => $this->getLinebreakClasses() . 'mw-moveboxInput mw-ui-input mw-ui-input-inline',
                'value' => $this->mDefaultText,
                'placeholder' => $this->mPlaceholderText,
                'size' => $this->mWidth,
                'dir' => $this->mDir,
            ]
        );
        $htmlOut .= $this->mBR;
        $htmlOut .= Xml::openElement( 'input',
            [
                'type' => 'submit',
                'class' => 'mw-ui-button mw-ui-progressive',
                'value' => $this->mButtonLabel
            ]
        );
        $htmlOut .= Xml::closeElement( 'form' );
        $htmlOut .= Xml::closeElement( 'div' );
 
        // Return HTML
        return $htmlOut;
    }
 
    public function getCommentForm() {
        global $wgScript;
 
        if ( !$this->mButtonLabel ) {
                $this->mButtonLabel = wfMessage( 'inputbox-postcommenttitle' )->text();
        }
 
        $htmlOut = Xml::openElement( 'div',
            [
                'class' => 'mw-inputbox-centered',
                'style' => $this->bgColorStyle(),
            ]
        );
        $commentFormParams = [
            'name' => 'commentbox',
            'class' => 'commentbox',
            'action' => $wgScript,
            'method' => 'get'
        ];
        if ( $this->mID !== '' ) {
            $commentFormParams['id'] = Sanitizer::escapeIdForAttribute( $this->mID );
        }
        $htmlOut .= Xml::openElement( 'form', $commentFormParams );
        $editArgs = $this->getEditActionArgs();
        $htmlOut .= Html::hidden( $editArgs['name'], $editArgs['value'] );
        if ( $this->mPreload !== null ) {
            $htmlOut .= Html::hidden( 'preload', $this->mPreload );
        }
        if ( is_array( $this->mPreloadparams ) ) {
            foreach ( $this->mPreloadparams as $preloadparams ) {
                $htmlOut .= Html::hidden( 'preloadparams[]', $preloadparams );
            }
        }
        if ( $this->mEditIntro !== null ) {
            $htmlOut .= Html::hidden( 'editintro', $this->mEditIntro );
        }
        $htmlOut .= Xml::openElement( 'input',
            [
                'type' => $this->mHidden ? 'hidden' : 'text',
                'name' => 'preloadtitle',
                'class' => $this->getLinebreakClasses() . 'commentboxInput mw-ui-input mw-ui-input-inline',
                'value' => $this->mDefaultText,
                'placeholder' => $this->mPlaceholderText,
                'size' => $this->mWidth,
                'dir' => $this->mDir,
            ]
        );
        $htmlOut .= Html::hidden( 'section', 'new' );
        $htmlOut .= Html::hidden( 'title', $this->mPage );
        $htmlOut .= $this->mBR;
        $htmlOut .= Xml::openElement( 'input',
            [
                'type' => 'submit',
                'name' => 'create',
                'class' => 'mw-ui-button mw-ui-progressive',
                'value' => $this->mButtonLabel
            ]
        );
        $htmlOut .= Xml::closeElement( 'form' );
        $htmlOut .= Xml::closeElement( 'div' );
 
        // Return HTML
        return $htmlOut;
    }
 
    public function extractOptions( $text ) {
        // Parse all possible options
        $values = [];
        foreach ( explode( "\n", $text ) as $line ) {
            if ( strpos( $line, '=' ) === false ) {
                continue;
            }
            list( $name, $value ) = explode( '=', $line, 2 );
            $name = strtolower( trim( $name ) );
            $value = Sanitizer::decodeCharReferences( trim( $value ) );
            if ( $name == 'preloadparams[]' ) {
                // We have to special-case this one because it's valid for it to appear more than once.
                $this->mPreloadparams[] = $value;
            } else {
                $values[ $name ] = $value;
            }
        }
 
        // Validate the dir value.
        if ( isset( $values['dir'] ) && !in_array( $values['dir'], [ 'ltr', 'rtl' ] ) ) {
            unset( $values['dir'] );
        }
 
        // Build list of options, with local member names
        $options = [
            'type' => 'mType',
            'width' => 'mWidth',
            'preload' => 'mPreload',
            'page' => 'mPage',
            'editintro' => 'mEditIntro',
            'useve' => 'mUseVE',
            'summary' => 'mSummary',
            'nosummary' => 'mNosummary',
            'minor' => 'mMinor',
            'break' => 'mBR',
            'default' => 'mDefaultText',
            'placeholder' => 'mPlaceholderText',
            'bgcolor' => 'mBGColor',
            'buttonlabel' => 'mButtonLabel',
            'searchbuttonlabel' => 'mSearchButtonLabel',
            'fulltextbutton' => 'mFullTextButton',
            'namespaces' => 'mNamespaces',
            'labeltext' => 'mLabelText',
            'hidden' => 'mHidden',
            'id' => 'mID',
            'inline' => 'mInline',
            'prefix' => 'mPrefix',
            'dir' => 'mDir',
            'searchfilter' => 'mSearchFilter',
            'tour' => 'mTour'
        ];
        // Options we should maybe run through lang converter.
        $convertOptions = [
            'default' => true,
            'buttonlabel' => true,
            'searchbuttonlabel' => true,
            'placeholder' => true
        ];
        foreach ( $options as $name => $var ) {
            if ( isset( $values[$name] ) ) {
                $this->$var = $values[$name];
                if ( isset( $convertOptions[$name] ) ) {
                    $this->$var = $this->languageConvert( $this->$var );
                }
            }
        }
 
        // Insert a line break if configured to do so
        $this->mBR = ( strtolower( $this->mBR ) == "no" ) ? ' ' : '<br />';
 
        // Validate the width; make sure it's a valid, positive integer
        $this->mWidth = intval( $this->mWidth <= 0 ? 50 : $this->mWidth );
 
        // Validate background color
        if ( !$this->isValidColor( $this->mBGColor ) ) {
            $this->mBGColor = 'transparent';
        }
    }
 
    public function isValidColor( $color ) {
        $regex = <<<REGEX
            /^ (
                [a-zA-Z]* |       # color names
                \# [0-9a-f]{3} |  # short hexadecimal
                \# [0-9a-f]{6} |  # long hexadecimal
                rgb \s* \‍( \s* (
                    \d+ \s* , \s* \d+ \s* , \s* \d+ |    # rgb integer
                    [0-9.]+% \s* , \s* [0-9.]+% \s* , \s* [0-9.]+%   # rgb percent
                ) \s* \)
            ) $ /xi
REGEX;
        return (bool)preg_match( $regex, $color );
    }
 
    private function bgColorStyle() {
        if ( $this->mBGColor != 'transparent' ) {
            return 'background-color: ' . $this->mBGColor . ';';
        }
        return '';
    }
 
    private function shouldUseVE() {
        return ExtensionRegistry::getInstance()->isLoaded( 'VisualEditor' ) && $this->mUseVE !== null;
    }
 
    private function languageConvert( $text ) {
        $lang = $this->mParser->getTargetLanguage();
        if ( $lang->hasVariants() && strpos( $text, '-{' ) !== false ) {
            $text = $lang->convert( $text );
        }
        return $text;
    }
}