wiki-grav/plugins/langswitcher/langswitcher.php
2022-11-19 15:40:01 +01:00

181 lines
5.6 KiB
PHP

<?php
namespace Grav\Plugin;
use Composer\Autoload\ClassLoader;
use Grav\Common\Cache;
use Grav\Common\Language\Language;
use Grav\Common\Language\LanguageCodes;
use Grav\Common\Page\Interfaces\PageInterface;
use Grav\Common\Page\Page;
use Grav\Common\Page\Pages;
use \Grav\Common\Plugin;
class LangSwitcherPlugin extends Plugin
{
/**
* @return array
*/
public static function getSubscribedEvents()
{
return [
'onPluginsInitialized' => [
['autoload', 100001],
['onPluginsInitialized', 0]
]
];
}
/**
* [onPluginsInitialized:100000] Composer autoload.
*
* @return ClassLoader
*/
public function autoload()
{
return require __DIR__ . '/vendor/autoload.php';
}
/**
* Initialize configuration
*/
public function onPluginsInitialized()
{
if ($this->isAdmin()) {
$this->active = false;
return;
}
$this->enable([
'onTwigInitialized' => ['onTwigInitialized', 0],
'onTwigTemplatePaths' => ['onTwigTemplatePaths', 0],
'onTwigSiteVariables' => ['onTwigSiteVariables', 0]
]);
}
/** Add the native_name function */
public function onTwigInitialized()
{
$this->grav['twig']->twig()->addFunction(
new \Twig_SimpleFunction('native_name', function($key) {
return LanguageCodes::getNativeName($key);
})
);
}
/**
* Add current directory to twig lookup paths.
*/
public function onTwigTemplatePaths()
{
$this->grav['twig']->twig_paths[] = __DIR__ . '/templates';
}
/**
* Generate localized route based on the translated slugs found through the pages hierarchy
*/
protected function getTranslatedUrl($lang, $path)
{
/** @var Language $language */
$url = null;
/** @var Pages $pages */
$pages = $this->grav['pages'];
/** @var Language $language */
$language = $this->grav['language'];
$language->init();
$language->setActive($lang);
$pages->reset();
$page = $pages->get($path);
if ($page) {
$url = $page->url();
}
return $url;
}
/**
* Set needed variables to display Langswitcher.
*/
public function onTwigSiteVariables()
{
/** @var PageInterface $page */
$page = $this->grav['page'];
/** @var Pages $pages */
$pages = $this->grav['pages'];
/** @var Cache $cache */
$cache = $this->grav['cache'];
$data = new \stdClass;
$data->page_route = $page->rawRoute();
if ($page->home()) {
$data->page_route = '/';
}
$translated_cache_key = md5('translated_cache_key'.$data->page_route.$pages->getSimplePagesHash());
$languages = $this->grav['language']->getLanguages();
$data->languages = $languages;
if ($this->config->get('plugins.langswitcher.untranslated_pages_behavior') !== 'none') {
$translated_pages = [];
foreach ($languages as $language) {
$translated_pages[$language] = null;
$page_name_without_ext = substr($page->name(), 0, -(strlen($page->extension())));
$translated_page_path = $page->path() . DS . $page_name_without_ext . '.' . $language . '.md';
if (!file_exists($translated_page_path) and $language == $this->grav['language']->getDefault()) {
$translated_page_path = $page->path() . DS . $page_name_without_ext . '.md';
}
if (file_exists($translated_page_path)) {
$translated_page = new Page();
$translated_page->init(new \SplFileInfo($translated_page_path), $language . '.md');
$translated_pages[$language] = $translated_page;
}
}
$data->translated_pages = $translated_pages;
}
$language = $this->grav['language'];
$active = $language->getActive() ?? $language->getDefault();
if ($this->config->get('plugins.langswitcher.translated_urls', true)) {
$data->translated_routes = $cache->fetch($translated_cache_key);
if ($data->translated_routes === false) {
$translate_langs = $data->languages;
if (($key = array_search($active, $translate_langs)) !== false) {
$data->translated_routes[$active] = $page->url();
unset($translate_langs[$key]);
}
foreach ($translate_langs as $lang) {
$data->translated_routes[$lang] = $this->getTranslatedUrl($lang, $page->path());
if (is_null($data->translated_routes[$lang])) {
$data->translated_routes[$lang] = $data->page_route;
}
}
// Reset pages to current active language
$language->init();
$language->setActive($active);
$this->grav['pages']->reset();
$cache->save($translated_cache_key, $data->translated_routes);
}
}
$data->current = $language->getLanguage();
$this->grav['twig']->twig_vars['langswitcher'] = $this->grav['langswitcher'] = $data;
if ($this->config->get('plugins.langswitcher.built_in_css')) {
$this->grav['assets']->add('plugin://langswitcher/css/langswitcher.css');
}
}
public function getNativeName($code) {
}
}