123 lines
2.1 KiB
PHP
123 lines
2.1 KiB
PHP
<?php
|
|
|
|
namespace Kirby\Template;
|
|
|
|
use Kirby\Exception\LogicException;
|
|
|
|
/**
|
|
* The slot class catches all content
|
|
* between the beginning and the end of
|
|
* a slot. Slot content is then stored
|
|
* in the Slots collection.
|
|
*
|
|
* @package Kirby Template
|
|
* @author Bastian Allgeier <bastian@getkirby.com>
|
|
* @link https://getkirby.com
|
|
* @copyright Bastian Allgeier
|
|
* @license https://getkirby.com/license
|
|
*/
|
|
class Slot
|
|
{
|
|
/**
|
|
* The captured slot content
|
|
* @internal
|
|
*/
|
|
public string|null $content;
|
|
|
|
/**
|
|
* The name that was declared during
|
|
* the definition of the slot
|
|
*/
|
|
protected string $name;
|
|
|
|
/**
|
|
* Keeps track of the slot state
|
|
*/
|
|
protected bool $open = false;
|
|
|
|
/**
|
|
* Creates a new slot
|
|
*/
|
|
public function __construct(string $name, string|null $content = null)
|
|
{
|
|
$this->name = $name;
|
|
$this->content = $content;
|
|
}
|
|
|
|
/**
|
|
* Renders the slot content or an empty string
|
|
* if the slot is empty.
|
|
*/
|
|
public function __toString(): string
|
|
{
|
|
return $this->render() ?? '';
|
|
}
|
|
|
|
/**
|
|
* Used in the slot helper
|
|
*/
|
|
public static function begin(string $name = 'default'): static|null
|
|
{
|
|
return Snippet::$current?->slot($name);
|
|
}
|
|
|
|
/**
|
|
* Closes a slot and catches all the content
|
|
* that has been printed since the slot has
|
|
* been opened
|
|
*/
|
|
public function close(): void
|
|
{
|
|
if ($this->open === false) {
|
|
throw new LogicException('The slot has not been opened');
|
|
}
|
|
|
|
$this->content = ob_get_clean();
|
|
$this->open = false;
|
|
}
|
|
|
|
/**
|
|
* Used in the endslot() helper
|
|
*/
|
|
public static function end(): void
|
|
{
|
|
Snippet::$current?->endslot();
|
|
}
|
|
|
|
/**
|
|
* Returns whether the slot is currently
|
|
* open and being buffered
|
|
*/
|
|
public function isOpen(): bool
|
|
{
|
|
return $this->open;
|
|
}
|
|
|
|
/**
|
|
* Returns the slot name
|
|
*/
|
|
public function name(): string
|
|
{
|
|
return $this->name;
|
|
}
|
|
|
|
/**
|
|
* Opens the slot and starts
|
|
* output buffering
|
|
*/
|
|
public function open(): void
|
|
{
|
|
$this->open = true;
|
|
|
|
// capture the output
|
|
ob_start();
|
|
}
|
|
|
|
/**
|
|
* Returns the slot content
|
|
*/
|
|
public function render(): string|null
|
|
{
|
|
return $this->content;
|
|
}
|
|
}
|