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<?php
namespace YOOtheme\View;
use YOOtheme\View;
class SectionHelper
{
/**
* @var array
*/
protected $sections = [];
/**
* @var array
*/
protected $openSections = [];
/**
* Constructor.
*
* @param View $view
*/
public function __construct(View $view)
{
$view['sections'] = $this;
$view->addFunction('section', [$this, 'get']);
}
/**
* Gets a section.
*
* @param string $name
* @param string|false $default
*
* @return string|false
*/
public function get($name, $default = false)
{
if (empty($this->sections[$name])) {
return $default;
}
return array_reduce($this->sections[$name], function ($result, $content) {
if (is_callable($content)) {
$result = $content($result);
} elseif (is_string($content)) {
$result .= $content;
}
return $result;
});
}
/**
* Sets a section value.
*
* @param string $name
* @param string|callable $content
*/
public function set($name, $content)
{
$this->sections[$name] = [$content];
}
/**
* Adds a section value by appending it.
*
* @param string $name
* @param string|callable $content
*/
public function add($name, $content)
{
$this->sections[$name][] = $content;
}
/**
* Checks if a section exists.
*
* @param string $name
*
* @return bool
*/
public function exists($name)
{
return isset($this->sections[$name]);
}
/**
* Starts a new section.
*
* @param string $name
*/
public function start($name)
{
if (ob_start()) {
$this->openSections[] = $name;
}
}
/**
* Stops a section.
*
* @throws \LogicException
*/
public function stop()
{
if (!($name = array_pop($this->openSections))) {
throw new \LogicException('Cannot stop a section without first starting one.');
}
$this->sections[$name] = [ob_get_clean()];
}
}