mirror of
https://github.com/wallabag/wallabag.git
synced 2024-12-04 23:06:27 +00:00
235 lines
7.8 KiB
PHP
235 lines
7.8 KiB
PHP
<?php
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/**
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* wallabag, self hostable application allowing you to not miss any content anymore
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*
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* @category wallabag
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* @author Nicolas Lœuillet <nicolas@loeuillet.org>
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* @copyright 2013
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* @license http://opensource.org/licenses/MIT see COPYING file
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*/
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class Template extends Twig_Environment
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{
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protected $wallabag;
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private $canRenderTemplates = TRUE;
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private $currentTheme = '';
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public function __construct(Poche $wallabag)
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{
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$this->wallabag = $wallabag;
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// Set up theme
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$pocheUser = Session::getParam('poche_user');
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$themeDirectory = (is_null($pocheUser) ? DEFAULT_THEME : $pocheUser->getConfigValue('theme'));
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if ($themeDirectory === false || !is_dir(THEME . '/' . $themeDirectory)) {
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$themeDirectory = DEFAULT_THEME;
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}
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$this->currentTheme = $themeDirectory;
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if ($this->_themeIsInstalled() === array()) {
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$this->_init();
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}
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}
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/**
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* Returns true if selected theme is installed
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*
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* @return bool
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*/
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private function _themeIsInstalled()
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{
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$errors = array();
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// Twig is an absolute requirement for wallabag to function.
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// Abort immediately if the Composer installer hasn't been run yet
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if (!$this->canRenderTemplates) {
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$errors[] = 'Twig does not seem to be installed. Please initialize the Composer installation to automatically fetch dependencies. You can also download <a href="http://wllbg.org/vendor">vendor.zip</a> and extract it in your wallabag folder.';
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}
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// Check if the selected theme and its requirements are present
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$theme = $this->getTheme();
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if ($theme != '' && !is_dir(THEME . '/' . $theme)) {
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$errors[] = 'The currently selected theme (' . $theme . ') does not seem to be properly installed (Missing directory: ' . THEME . '/' . $theme . ')';
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$this->canRenderTemplates = FALSE;
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}
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$themeInfo = $this->getThemeInfo($theme);
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if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
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foreach ($themeInfo['requirements'] as $requiredTheme) {
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if (! is_dir(THEME . '/' . $requiredTheme)) {
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$errors[] = 'The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')';
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$this->canRenderTemplates = FALSE;
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}
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}
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}
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$currentErrors = (is_null(Session::getParam('errors'))? array() : Session::getParam('errors'));
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Session::setParam('errors', array_merge($errors, $currentErrors));
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return $errors;
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}
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/**
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* Initialization for templates
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*/
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private function _init()
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{
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$loaderChain = new Twig_Loader_Chain();
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$theme = $this->getTheme();
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// add the current theme as first to the loader chain
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// so Twig will look there first for overridden template files
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try {
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$loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $theme));
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} catch (Twig_Error_Loader $e) {
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# @todo isInstalled() should catch this, inject Twig later
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die('The currently selected theme (' . $theme . ') does not seem to be properly installed (' . THEME . '/' . $theme .' is missing)');
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}
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// add all required themes to the loader chain
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$themeInfo = $this->getThemeInfo($theme);
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if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
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foreach ($themeInfo['requirements'] as $requiredTheme) {
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try {
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$loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $requiredTheme));
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} catch (Twig_Error_Loader $e) {
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# @todo isInstalled() should catch this, inject Twig later
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die('The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')');
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}
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}
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}
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if (DEBUG_POCHE) {
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$twigParams = array();
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} else {
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$twigParams = array('cache' => CACHE);
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}
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parent::__construct($loaderChain, $twigParams);
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//$tpl = new Twig_Environment($loaderChain, $twigParams);
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$this->addExtension(new Twig_Extensions_Extension_I18n());
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# filter to display domain name of an url
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$filter = new Twig_SimpleFilter('getDomain', 'Tools::getDomain');
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$this->addFilter($filter);
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# filter for reading time
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$filter = new Twig_SimpleFilter('getReadingTime', 'Tools::getReadingTime');
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$this->addFilter($filter);
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}
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/**
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* Returns current theme
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*
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* @return string
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*/
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public function getTheme()
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{
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return $this->currentTheme;
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}
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/**
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* Provides theme information by parsing theme.ini file if present in the theme's root directory.
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* In all cases, the following data will be returned:
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* - name: theme's name, or key if the theme is unnamed,
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* - current: boolean informing if the theme is the current user theme.
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*
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* @param string $theme Theme key (directory name)
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* @return array|boolean Theme information, or false if the theme doesn't exist.
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*/
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public function getThemeInfo($theme)
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{
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if (!is_dir(THEME . '/' . $theme)) {
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return false;
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}
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$themeIniFile = THEME . '/' . $theme . '/theme.ini';
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$themeInfo = array();
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if (is_file($themeIniFile) && is_readable($themeIniFile)) {
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$themeInfo = parse_ini_file($themeIniFile);
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}
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if ($themeInfo === false) {
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$themeInfo = array();
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}
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if (!isset($themeInfo['name'])) {
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$themeInfo['name'] = $theme;
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}
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$themeInfo['current'] = ($theme === $this->getTheme());
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return $themeInfo;
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}
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/**
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* Returns an array with installed themes
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*
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* @return array
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*/
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public function getInstalledThemes()
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{
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$handle = opendir(THEME);
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$themes = array();
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while (($theme = readdir($handle)) !== false) {
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# Themes are stored in a directory, so all directory names are themes
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# @todo move theme installation data to database
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if (!is_dir(THEME . '/' . $theme) || in_array($theme, array('.', '..', '_global'))) {
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continue;
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}
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$themes[$theme] = $this->getThemeInfo($theme);
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}
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ksort($themes);
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return $themes;
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}
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/**
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* Update theme for the current user
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*
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* @param $newTheme
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*/
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public function updateTheme($newTheme)
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{
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# we are not going to change it to the current theme...
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if ($newTheme == $this->getTheme()) {
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$this->wallabag->messages->add('w', _('still using the "' . $this->getTheme() . '" theme!'));
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Tools::redirect('?view=config');
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}
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$themes = $this->getInstalledThemes();
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$actualTheme = false;
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foreach (array_keys($themes) as $theme) {
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if ($theme == $newTheme) {
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$actualTheme = true;
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break;
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}
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}
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if (!$actualTheme) {
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$this->wallabag->messages->add('e', _('that theme does not seem to be installed'));
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Tools::redirect('?view=config');
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}
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$this->wallabag->store->updateUserConfig($this->wallabag->user->getId(), 'theme', $newTheme);
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$this->wallabag->messages->add('s', _('you have changed your theme preferences'));
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$currentConfig = $_SESSION['poche_user']->config;
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$currentConfig['theme'] = $newTheme;
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$_SESSION['poche_user']->setConfig($currentConfig);
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Tools::emptyCache();
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Tools::redirect('?view=config');
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}
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}
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