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<?php
/**
* @package panopticon
* @copyright Copyright (c)2023-2024 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license https://www.gnu.org/licenses/agpl-3.0.txt GNU Affero General Public License, version 3 or later
*/
namespace Akeeba\Panopticon\View\Trait;
defined('AKEEBA') || die;
trait ShowOnTrait
{
/**
* Converts ShowOn expressions to the internal data required by showon.js
*
* @param string|null $showOn The ShowOn expression e.g. `foo:1[AND]bar!:2[OR]baz:bat`
* @param string|null $arrayName If the fields are wrapped in an array element, what's the array name
*
* @return array
*/
private function parseShowOnConditions(?string $showOn, ?string $arrayName = null): array
{
if (empty($showOn))
{
return [];
}
$showOnData = [];
$showOnParts = preg_split('#(\[AND\]|\[OR\])#', $showOn, -1, PREG_SPLIT_DELIM_CAPTURE);
$op = '';
foreach ($showOnParts as $showOnPart)
{
if (in_array($showOnPart, ['[AND]', '[OR]']))
{
$op = trim($showOnPart, '[]');
continue;
}
$compareEqual = strpos($showOnPart, '!:') === false;
$showOnPartBlocks = explode(($compareEqual ? ':' : '!:'), $showOnPart, 2);
$field = $arrayName
? sprintf("%s[%s]", $arrayName, $showOnPartBlocks[0])
: $showOnPartBlocks[0];
$showOnData[] = [
'field' => $field,
'values' => explode(',', $showOnPartBlocks[1]),
'sign' => $compareEqual === true ? '=' : '!=',
'op' => $op,
];
$op = '';
}
return $showOnData;
}
/**
* Generate data-showon attributes from ShowOn conditions
*
* @param string|null $showOn The ShowOn expression e.g. `foo:1[AND]bar!:2[OR]baz:bat`
* @param string|null $arrayName If the fields are wrapped in an array element, what's the array name
*
* @return string
*/
protected function showOn(?string $showOn, ?string $arrayName = null): string
{
$conditions = $this->parseShowOnConditions($showOn, $arrayName);
return empty($conditions)
? ''
: sprintf(
'data-showon="%s"',
$this->escape(json_encode($this->parseShowOnConditions($showOn, $arrayName)))
);
}
}