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<?php
/*
** Zabbix
** Copyright (C) 2001-2022 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 containing methods for operations with widget iterators.
*/
abstract class CControllerWidgetIterator extends CControllerDashboardWidgetView {
protected function init(): void {
parent::init();
$this->addValidationRules([
'page' => 'required|ge 1'
]);
}
/**
* Get realistic page number for given number of child widgets.
*/
protected function getIteratorPage(int $num_widgets): int {
return max(1, min((int) $this->getInput('page'), $this->getIteratorPageCount($num_widgets)));
}
/**
* Get number of child widgets to show on a single page.
*/
protected function getIteratorPageSize(): int {
$fields_data = $this->getForm()->getFieldsValues();
return min($fields_data['rows'] * $fields_data['columns'],
floor(DASHBOARD_MAX_COLUMNS * DASHBOARD_WIDGET_MAX_ROWS / DASHBOARD_WIDGET_MIN_ROWS)
);
}
/**
* Get number of pages for given number of child widgets.
*/
protected function getIteratorPageCount(int $num_widgets): int {
return (floor(max(0, $num_widgets - 1) / $this->getIteratorPageSize()) + 1);
}
}
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