<?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
 */

namespace MediaWiki\Minerva;

use RuntimeException;

/**
 * FIXME: Use OOUI when available
 *
 * Helper methods for generating parts of the UI.
 */
class MinervaUI {

	/**
	 * Get CSS classes for icons
	 * @param string|null $iconName
	 * @param string $iconType element or before
	 * @param string $additionalClassNames additional class names you want to associate
	 *  with the iconed element
	 * @param string $iconPrefix optional prefix for icons. Defaults to minerva.
	 * @return string class name for use with HTML element
	 */
	public static function iconClass( $iconName, $iconType = 'element', $additionalClassNames = '',
		$iconPrefix = 'minerva'
	) {
		$base = 'mw-ui-icon';
		$modifiers = 'mw-ui-icon-' . $iconType;
		if ( $iconName ) {
			$modifiers .= ' mw-ui-icon-' . $iconPrefix . '-' . $iconName;
		}
		if ( $iconType === 'element' ) {
			$additionalClassNames .= ' mw-ui-button mw-ui-quiet';
		} elseif ( $iconType === 'before' ) {
			throw new RuntimeException( 'iconClass before type is no longer supported.' );
		}
		return $base . ' ' . $modifiers . ' ' . $additionalClassNames;
	}

	/**
	 * Get CSS classes for a mediawiki ui semantic element
	 * @param string $base The base class
	 * @param string $modifier Type of anchor (progressive, constructive, destructive)
	 * @param string $additionalClassNames additional class names you want to associate
	 *  with the iconed element
	 * @return string class name for use with HTML element
	 */
	public static function semanticClass( $base, $modifier, $additionalClassNames = '' ) {
		$modifier = empty( $modifier ) ? '' : 'mw-ui-' . $modifier;
		return $base . ' ' . $modifier . ' ' . $additionalClassNames;
	}

	/**
	 * Get CSS classes for buttons
	 * @param string $modifier Type of button (progressive, constructive, destructive)
	 * @param string $additionalClassNames additional class names you want to associate
	 *  with the button element
	 * @return string class name for use with HTML element
	 */
	public static function buttonClass( $modifier = '', $additionalClassNames = '' ) {
		return self::semanticClass( 'mw-ui-button', $modifier, $additionalClassNames );
	}
}