<?php declare(strict_types = 1);
/*
** Zabbix
** Copyright (C) 2001-2021 Zabbix SIA
**
** 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.
**/


class CButtonDropdown extends CButton {

	/**
	 * Default CSS class name for HTML root element.
	 */
	public const ZBX_STYLE_CLASS = 'btn-dropdown-container';

	/**
	 * Button style names.
	 */
	public const ZBX_STYLE_BTN_VALUE = 'dropdown-value';

	/**
	 * Selected value.
	 *
	 * @var string
	 */
	protected $dropdown_value = null;

	/**
	 * Dropdown items array.
	 *
	 * @var array
	 */
	protected $dropdown_items = [];

	/**
	 * Create CButtonDropdown instance.
	 *
	 * @param string $name              Element name.
	 * @param string $value             Element selected value.
	 * @param array  $items             Dropdown items.
	 * @param string $items[]['label']  Dropdown item label.
	 * @param string $items[]['value']  Dropdown item value.
	 * @param string $items[]['class']  Dropdown css class to be used for CButtonDropdown when item is selected.
	 * @param string caption            Button caption.
	 */

	public function __construct(string $name, $value = null, array $items = [], string $caption = '') {
		parent::__construct($name, $caption);

		$this->setId($this->getId().'_button');

		$this->dropdown_value = $value;
		$this->dropdown_items = $items;

		$this->addClass(ZBX_STYLE_BTN_ALT);
		$this->addClass(ZBX_STYLE_BTN_TOGGLE);
	}

	public function toString($destroy = true) {
		$this->setMenuPopup([
			'type' => 'dropdown',
			'data' => [
				'items' => $this->dropdown_items,
				'toggle_class' => ZBX_STYLE_BTN_TOGGLE
			]
		]);

		return (new CDiv())
			->addClass(self::ZBX_STYLE_CLASS)
			->setId($this->getId().'_wrap')
			->addItem(new CObject(parent::toString($destroy)))
			->addItem(
				(new CInput('hidden', $this->getAttribute('name'), $this->dropdown_value))
					->addClass(self::ZBX_STYLE_BTN_VALUE)
			)
			->toString(true);
	}
}
