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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2012 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Layout;
use Joomla\CMS\Application\ApplicationHelper;
use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Version;
// phpcs:disable PSR1.Files.SideEffects
\defined('JPATH_PLATFORM') or die;
// phpcs:enable PSR1.Files.SideEffects
/**
* Base class for rendering a display layout
* loaded from a layout file
*
* @link https://docs.joomla.org/Special:MyLanguage/Sharing_layouts_across_views_or_extensions_with_JLayout
* @since 3.0
*/
class FileLayout extends BaseLayout
{
/**
* Cached layout paths
*
* @var array
* @since 3.5
*/
protected static $cache = [];
/**
* Dot separated path to the layout file, relative to base path
*
* @var string
* @since 3.0
*/
protected $layoutId = '';
/**
* Base path to use when loading layout files
*
* @var string
* @since 3.0
*/
protected $basePath = null;
/**
* Full path to actual layout files, after possible template override check
*
* @var string
* @since 3.0.3
*/
protected $fullPath = null;
/**
* Paths to search for layouts
*
* @var array
* @since 3.2
*/
protected $includePaths = [];
/**
* Method to instantiate the file-based layout.
*
* @param string $layoutId Dot separated path to the layout file, relative to base path
* @param string $basePath Base path to use when loading layout files
* @param mixed $options Optional custom options to load. Registry or array format [@since 3.2]
*
* @since 3.0
*/
public function __construct($layoutId, $basePath = null, $options = null)
{
// Initialise / Load options
$this->setOptions($options);
// Main properties
$this->setLayoutId($layoutId);
$this->basePath = $basePath;
// Init Environment
$this->setComponent($this->options->get('component', 'auto'));
$this->setClient($this->options->get('client', 'auto'));
}
/**
* Method to render the layout.
*
* @param array $displayData Array of properties available for use inside the layout file to build the displayed output
*
* @return string The necessary HTML to display the layout
*
* @since 3.0
*/
public function render($displayData = [])
{
$this->clearDebugMessages();
// Inherit base output from parent class
$layoutOutput = '';
// Automatically merge any previously data set if $displayData is an array
if (\is_array($displayData)) {
$displayData = array_merge($this->data, $displayData);
}
// Check possible overrides, and build the full path to layout file
$path = $this->getPath();
if ($this->isDebugEnabled()) {
echo '<pre>' . $this->renderDebugMessages() . '</pre>';
}
// Nothing to show
if (empty($path)) {
return $layoutOutput;
}
ob_start();
include $path;
$layoutOutput .= ob_get_contents();
ob_end_clean();
return $layoutOutput;
}
/**
* Method to finds the full real file path, checking possible overrides
*
* @return string The full path to the layout file
*
* @since 3.0
*/
protected function getPath()
{
$layoutId = $this->getLayoutId();
$includePaths = $this->getIncludePaths();
$suffixes = $this->getSuffixes();
$this->addDebugMessage('<strong>Layout:</strong> ' . $this->layoutId);
if (!$layoutId) {
$this->addDebugMessage('<strong>There is no active layout</strong>');
return;
}
if (!$includePaths) {
$this->addDebugMessage('<strong>There are no folders to search for layouts:</strong> ' . $layoutId);
return;
}
$hash = md5(
json_encode(
[
'paths' => $includePaths,
'suffixes' => $suffixes,
]
)
);
if (!empty(static::$cache[$layoutId][$hash])) {
$this->addDebugMessage('<strong>Cached path:</strong> ' . static::$cache[$layoutId][$hash]);
return static::$cache[$layoutId][$hash];
}
$this->addDebugMessage('<strong>Include Paths:</strong> ' . print_r($includePaths, true));
// Search for suffixed versions. Example: tags.j31.php
if ($suffixes) {
$this->addDebugMessage('<strong>Suffixes:</strong> ' . print_r($suffixes, true));
foreach ($suffixes as $suffix) {
$rawPath = str_replace('.', '/', $this->layoutId) . '.' . $suffix . '.php';
$this->addDebugMessage('<strong>Searching layout for:</strong> ' . $rawPath);
if ($foundLayout = Path::find($this->includePaths, $rawPath)) {
$this->addDebugMessage('<strong>Found layout:</strong> ' . $this->fullPath);
static::$cache[$layoutId][$hash] = $foundLayout;
return static::$cache[$layoutId][$hash];
}
}
}
// Standard version
$rawPath = str_replace('.', '/', $this->layoutId) . '.php';
$this->addDebugMessage('<strong>Searching layout for:</strong> ' . $rawPath);
$foundLayout = Path::find($this->includePaths, $rawPath);
if (!$foundLayout) {
$this->addDebugMessage('<strong>Unable to find layout: </strong> ' . $layoutId);
return;
}
$this->addDebugMessage('<strong>Found layout:</strong> ' . $foundLayout);
static::$cache[$layoutId][$hash] = $foundLayout;
return static::$cache[$layoutId][$hash];
}
/**
* Add one path to include in layout search. Proxy of addIncludePaths()
*
* @param string|string[] $path The path to search for layouts
*
* @return self
*
* @since 3.2
*/
public function addIncludePath($path)
{
$this->addIncludePaths($path);
return $this;
}
/**
* Add one or more paths to include in layout search
*
* @param string|string[] $paths The path or array of paths to search for layouts
*
* @return self
*
* @since 3.2
*/
public function addIncludePaths($paths)
{
if (empty($paths)) {
return $this;
}
$includePaths = $this->getIncludePaths();
if (\is_array($paths)) {
$includePaths = array_unique(array_merge($paths, $includePaths));
} else {
array_unshift($includePaths, $paths);
}
$this->setIncludePaths($includePaths);
return $this;
}
/**
* Clear the include paths
*
* @return self
*
* @since 3.5
*/
public function clearIncludePaths()
{
$this->includePaths = [];
return $this;
}
/**
* Get the active include paths
*
* @return array
*
* @since 3.5
*/
public function getIncludePaths()
{
if (empty($this->includePaths)) {
$this->includePaths = $this->getDefaultIncludePaths();
}
return $this->includePaths;
}
/**
* Get the active layout id
*
* @return string
*
* @since 3.5
*/
public function getLayoutId()
{
return $this->layoutId;
}
/**
* Get the active suffixes
*
* @return array
*
* @since 3.5
*/
public function getSuffixes()
{
return $this->getOptions()->get('suffixes', []);
}
/**
* Load the automatically generated language suffixes.
* Example: array('es-ES', 'es', 'ltr')
*
* @return self
*
* @since 3.5
*/
public function loadLanguageSuffixes()
{
$lang = Factory::getLanguage();
$langTag = $lang->getTag();
$langParts = explode('-', $langTag);
$suffixes = [$langTag, $langParts[0]];
$suffixes[] = $lang->isRtl() ? 'rtl' : 'ltr';
$this->setSuffixes($suffixes);
return $this;
}
/**
* Load the automatically generated version suffixes.
* Example: array('j311', 'j31', 'j3')
*
* @return self
*
* @since 3.5
*/
public function loadVersionSuffixes()
{
$cmsVersion = new Version();
// Example j311
$fullVersion = 'j' . str_replace('.', '', $cmsVersion->getShortVersion());
// Create suffixes like array('j311', 'j31', 'j3')
$suffixes = [
$fullVersion,
substr($fullVersion, 0, 3),
substr($fullVersion, 0, 2),
];
$this->setSuffixes(array_unique($suffixes));
return $this;
}
/**
* Remove one path from the layout search
*
* @param string $path The path to remove from the layout search
*
* @return self
*
* @since 3.2
*/
public function removeIncludePath($path)
{
$this->removeIncludePaths($path);
return $this;
}
/**
* Remove one or more paths to exclude in layout search
*
* @param string $paths The path or array of paths to remove for the layout search
*
* @return self
*
* @since 3.2
*/
public function removeIncludePaths($paths)
{
if (!empty($paths)) {
$paths = (array) $paths;
$this->includePaths = array_diff($this->includePaths, $paths);
}
return $this;
}
/**
* Validate that the active component is valid
*
* @param string $option URL Option of the component. Example: com_content
*
* @return boolean
*
* @since 3.2
*/
protected function validComponent($option = null)
{
// By default we will validate the active component
$component = $option ?? $this->options->get('component', null);
// Valid option format
if (!empty($component) && substr_count($component, 'com_')) {
// Latest check: component exists and is enabled
return ComponentHelper::isEnabled($component);
}
return false;
}
/**
* Change the component for the search paths for layouts
*
* @param string $option URL Option of the component. Example: com_content
*
* @return void
*
* @since 3.2
*/
public function setComponent($option)
{
$component = null;
switch ((string) $option) {
case 'none':
$component = null;
break;
case 'auto':
$component = ApplicationHelper::getComponentName();
break;
default:
$component = $option;
break;
}
// Extra checks
if (!$this->validComponent($component)) {
$component = null;
}
$this->options->set('component', $component);
// Refresh include paths
$this->clearIncludePaths();
}
/**
* Function to initialise the application client
*
* @param mixed $client Frontend: 'site' or 0 | Backend: 'admin' or 1
*
* @return void
*
* @since 3.2
*/
public function setClient($client)
{
// Force string conversion to avoid unexpected states
switch ((string) $client) {
case 'site':
case '0':
$client = 0;
break;
case 'admin':
case '1':
$client = 1;
break;
default:
$client = (int) Factory::getApplication()->isClient('administrator');
break;
}
$this->options->set('client', $client);
// Refresh include paths
$this->clearIncludePaths();
}
/**
* Set the active layout id
*
* @param string $layoutId Layout identifier
*
* @return self
*
* @since 3.5
*/
public function setLayoutId($layoutId)
{
$this->layoutId = $layoutId;
$this->fullPath = null;
return $this;
}
/**
* Get the default array of include paths
*
* @return array
*
* @since 3.5
*/
public function getDefaultIncludePaths()
{
// Get the template
$app = Factory::getApplication();
$templateName = $this->options->get('template');
if ($templateName) {
// Check template name in the options
$template = (object) [
'template' => $templateName,
'parent' => '',
];
} elseif ($app->isClient('site') || $app->isClient('administrator')) {
// Try to get a default template
$template = $app->getTemplate(true);
} else {
// Template not found
$template = false;
}
// Reset includePaths
$paths = [];
// (1 - highest priority) Received a custom high priority path
if ($this->basePath !== null) {
$paths[] = rtrim($this->basePath, DIRECTORY_SEPARATOR);
}
// Component layouts & overrides if exist
$component = $this->options->get('component', null);
if (!empty($component)) {
if ($template) {
// (2) Component template overrides path
$paths[] = JPATH_THEMES . '/' . $template->template . '/html/layouts/' . $component;
if (!empty($template->parent)) {
// (2.a) Component template overrides path for an inherited template using the parent
$paths[] = JPATH_THEMES . '/' . $template->parent . '/html/layouts/' . $component;
}
}
// (3) Component path
if ($this->options->get('client') == 0) {
$paths[] = JPATH_SITE . '/components/' . $component . '/layouts';
} else {
$paths[] = JPATH_ADMINISTRATOR . '/components/' . $component . '/layouts';
}
}
if ($template) {
// (4) Standard Joomla! layouts overridden
$paths[] = JPATH_THEMES . '/' . $template->template . '/html/layouts';
if (!empty($template->parent)) {
// (4.a) Component template overrides path for an inherited template using the parent
$paths[] = JPATH_THEMES . '/' . $template->parent . '/html/layouts';
}
}
// (5 - lower priority) Frontend base layouts
$paths[] = JPATH_ROOT . '/layouts';
return $paths;
}
/**
* Set the include paths to search for layouts
*
* @param array $paths Array with paths to search in
*
* @return self
*
* @since 3.5
*/
public function setIncludePaths($paths)
{
$this->includePaths = (array) $paths;
return $this;
}
/**
* Set suffixes to search layouts
*
* @param array $suffixes Array of suffixes to utilise
*
* @return self
*
* @since 3.5
*/
public function setSuffixes(array $suffixes)
{
$this->options->set('suffixes', $suffixes);
return $this;
}
/**
* Render a layout with the same include paths & options
*
* @param string $layoutId The identifier for the sublayout to be searched in a subfolder with the name of the current layout
* @param mixed $displayData Data to be rendered
*
* @return string The necessary HTML to display the layout
*
* @since 3.2
*/
public function sublayout($layoutId, $displayData)
{
// Sublayouts are searched in a subfolder with the name of the current layout
if (!empty($this->layoutId)) {
$layoutId = $this->layoutId . '.' . $layoutId;
}
$sublayout = new static($layoutId, $this->basePath, $this->options);
$sublayout->includePaths = $this->includePaths;
return $sublayout->render($displayData);
}
}