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path: root/www/wiki/includes/specials/forms/PreferencesForm.php
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<?php
/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 */

use MediaWiki\MediaWikiServices;

/**
 * Form to edit user preferences.
 */
class PreferencesForm extends HTMLForm {
	// Override default value from HTMLForm
	protected $mSubSectionBeforeFields = false;

	private $modifiedUser;

	/**
	 * @param User $user
	 */
	public function setModifiedUser( $user ) {
		$this->modifiedUser = $user;
	}

	/**
	 * @return User
	 */
	public function getModifiedUser() {
		if ( $this->modifiedUser === null ) {
			return $this->getUser();
		} else {
			return $this->modifiedUser;
		}
	}

	/**
	 * Get extra parameters for the query string when redirecting after
	 * successful save.
	 *
	 * @return array
	 */
	public function getExtraSuccessRedirectParameters() {
		return [];
	}

	/**
	 * @param string $html
	 * @return string
	 */
	function wrapForm( $html ) {
		$html = Xml::tags( 'div', [ 'id' => 'preferences' ], $html );

		return parent::wrapForm( $html );
	}

	/**
	 * @return string
	 */
	function getButtons() {
		$attrs = [ 'id' => 'mw-prefs-restoreprefs' ];

		if ( !$this->getModifiedUser()->isAllowedAny( 'editmyprivateinfo', 'editmyoptions' ) ) {
			return '';
		}

		$html = parent::getButtons();

		if ( $this->getModifiedUser()->isAllowed( 'editmyoptions' ) ) {
			$t = $this->getTitle()->getSubpage( 'reset' );

			$linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
			$html .= "\n" . $linkRenderer->makeLink( $t, $this->msg( 'restoreprefs' )->text(),
				Html::buttonAttributes( $attrs, [ 'mw-ui-quiet' ] ) );

			$html = Xml::tags( 'div', [ 'class' => 'mw-prefs-buttons' ], $html );
		}

		return $html;
	}

	/**
	 * Separate multi-option preferences into multiple preferences, since we
	 * have to store them separately
	 * @param array $data
	 * @return array
	 */
	function filterDataForSubmit( $data ) {
		foreach ( $this->mFlatFields as $fieldname => $field ) {
			if ( $field instanceof HTMLNestedFilterable ) {
				$info = $field->mParams;
				$prefix = isset( $info['prefix'] ) ? $info['prefix'] : $fieldname;
				foreach ( $field->filterDataForSubmit( $data[$fieldname] ) as $key => $value ) {
					$data["$prefix$key"] = $value;
				}
				unset( $data[$fieldname] );
			}
		}

		return $data;
	}

	/**
	 * Get the whole body of the form.
	 * @return string
	 */
	function getBody() {
		return $this->displaySection( $this->mFieldTree, '', 'mw-prefsection-' );
	}

	/**
	 * Get the "<legend>" for a given section key. Normally this is the
	 * prefs-$key message but we'll allow extensions to override it.
	 * @param string $key
	 * @return string
	 */
	function getLegend( $key ) {
		$legend = parent::getLegend( $key );
		Hooks::run( 'PreferencesGetLegend', [ $this, $key, &$legend ] );
		return $legend;
	}

	/**
	 * Get the keys of each top level preference section.
	 * @return array of section keys
	 */
	function getPreferenceSections() {
		return array_keys( array_filter( $this->mFieldTree, 'is_array' ) );
	}
}