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authorNicolas Lœuillet <nicolas@loeuillet.org>2015-01-20 07:40:39 +0100
committerNicolas Lœuillet <nicolas@loeuillet.org>2015-01-20 07:40:39 +0100
commit6ad93dff69d7c2beb2196e73f641e6484fccbeb7 (patch)
tree12430b858be2a41029fc11d1afa1fa2a120b96f9 /inc/poche/Template.class.php
parentc78c1a3f08815aab99752026ccdf1dcf63cf43c1 (diff)
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1<?php
2/**
3 * wallabag, self hostable application allowing you to not miss any content anymore
4 *
5 * @category wallabag
6 * @author Nicolas Lœuillet <nicolas@loeuillet.org>
7 * @copyright 2013
8 * @license http://opensource.org/licenses/MIT see COPYING file
9 */
10
11class Template extends Twig_Environment
12{
13 protected $wallabag;
14
15 private $canRenderTemplates = TRUE;
16 private $currentTheme = '';
17
18 public function __construct(Poche $wallabag)
19 {
20 $this->wallabag = $wallabag;
21
22 // Set up theme
23 $pocheUser = Session::getParam('poche_user');
24
25 $themeDirectory = (is_null($pocheUser) ? DEFAULT_THEME : $pocheUser->getConfigValue('theme'));
26
27 if ($themeDirectory === false || !is_dir(THEME . '/' . $themeDirectory)) {
28 $themeDirectory = DEFAULT_THEME;
29 }
30
31 $this->currentTheme = $themeDirectory;
32
33 if ($this->_themeIsInstalled() === array()) {
34 $this->_init();
35 }
36 }
37
38 /**
39 * Returns true if selected theme is installed
40 *
41 * @return bool
42 */
43 private function _themeIsInstalled()
44 {
45 $errors = array();
46
47 // Twig is an absolute requirement for wallabag to function.
48 // Abort immediately if the Composer installer hasn't been run yet
49 if (!$this->canRenderTemplates) {
50 $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.';
51 }
52
53 // Check if the selected theme and its requirements are present
54 $theme = $this->getTheme();
55 if ($theme != '' && !is_dir(THEME . '/' . $theme)) {
56 $errors[] = 'The currently selected theme (' . $theme . ') does not seem to be properly installed (Missing directory: ' . THEME . '/' . $theme . ')';
57 $this->canRenderTemplates = FALSE;
58 }
59
60 $themeInfo = $this->getThemeInfo($theme);
61 if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
62 foreach ($themeInfo['requirements'] as $requiredTheme) {
63 if (! is_dir(THEME . '/' . $requiredTheme)) {
64 $errors[] = 'The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')';
65 $this->canRenderTemplates = FALSE;
66 }
67 }
68 }
69
70 $currentErrors = (is_null(Session::getParam('errors'))? array() : Session::getParam('errors'));
71 Session::setParam('errors', array_merge($errors, $currentErrors));
72
73 return $errors;
74 }
75
76 /**
77 * Initialization for templates
78 */
79 private function _init()
80 {
81 $loaderChain = new Twig_Loader_Chain();
82 $theme = $this->getTheme();
83
84 // add the current theme as first to the loader chain
85 // so Twig will look there first for overridden template files
86 try {
87 $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $theme));
88 } catch (Twig_Error_Loader $e) {
89 # @todo isInstalled() should catch this, inject Twig later
90 die('The currently selected theme (' . $theme . ') does not seem to be properly installed (' . THEME . '/' . $theme .' is missing)');
91 }
92
93 // add all required themes to the loader chain
94 $themeInfo = $this->getThemeInfo($theme);
95 if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
96 foreach ($themeInfo['requirements'] as $requiredTheme) {
97 try {
98 $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $requiredTheme));
99 } catch (Twig_Error_Loader $e) {
100 # @todo isInstalled() should catch this, inject Twig later
101 die('The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')');
102 }
103 }
104 }
105
106 if (DEBUG_POCHE) {
107 $twigParams = array();
108 } else {
109 $twigParams = array('cache' => CACHE);
110 }
111
112 parent::__construct($loaderChain, $twigParams);
113
114 //$tpl = new Twig_Environment($loaderChain, $twigParams);
115 $this->addExtension(new Twig_Extensions_Extension_I18n());
116
117 # filter to display domain name of an url
118 $filter = new Twig_SimpleFilter('getDomain', 'Tools::getDomain');
119 $this->addFilter($filter);
120
121 # filter for reading time
122 $filter = new Twig_SimpleFilter('getReadingTime', 'Tools::getReadingTime');
123 $this->addFilter($filter);
124 }
125
126 /**
127 * Returns current theme
128 *
129 * @return string
130 */
131 public function getTheme()
132 {
133 return $this->currentTheme;
134 }
135
136 /**
137 * Provides theme information by parsing theme.ini file if present in the theme's root directory.
138 * In all cases, the following data will be returned:
139 * - name: theme's name, or key if the theme is unnamed,
140 * - current: boolean informing if the theme is the current user theme.
141 *
142 * @param string $theme Theme key (directory name)
143 * @return array|boolean Theme information, or false if the theme doesn't exist.
144 */
145 public function getThemeInfo($theme)
146 {
147 if (!is_dir(THEME . '/' . $theme)) {
148 return false;
149 }
150
151 $themeIniFile = THEME . '/' . $theme . '/theme.ini';
152 $themeInfo = array();
153
154 if (is_file($themeIniFile) && is_readable($themeIniFile)) {
155 $themeInfo = parse_ini_file($themeIniFile);
156 }
157
158 if ($themeInfo === false) {
159 $themeInfo = array();
160 }
161
162 if (!isset($themeInfo['name'])) {
163 $themeInfo['name'] = $theme;
164 }
165
166 $themeInfo['current'] = ($theme === $this->getTheme());
167
168 return $themeInfo;
169 }
170
171 /**
172 * Returns an array with installed themes
173 *
174 * @return array
175 */
176 public function getInstalledThemes()
177 {
178 $handle = opendir(THEME);
179 $themes = array();
180
181 while (($theme = readdir($handle)) !== false) {
182 # Themes are stored in a directory, so all directory names are themes
183 # @todo move theme installation data to database
184 if (!is_dir(THEME . '/' . $theme) || in_array($theme, array('.', '..', '_global'))) {
185 continue;
186 }
187
188 $themes[$theme] = $this->getThemeInfo($theme);
189 }
190
191 ksort($themes);
192
193 return $themes;
194 }
195
196 /**
197 * Update theme for the current user
198 *
199 * @param $newTheme
200 */
201 public function updateTheme($newTheme)
202 {
203 # we are not going to change it to the current theme...
204 if ($newTheme == $this->getTheme()) {
205 $this->wallabag->messages->add('w', _('still using the "' . $this->getTheme() . '" theme!'));
206 Tools::redirect('?view=config');
207 }
208
209 $themes = $this->getInstalledThemes();
210 $actualTheme = false;
211
212 foreach (array_keys($themes) as $theme) {
213 if ($theme == $newTheme) {
214 $actualTheme = true;
215 break;
216 }
217 }
218
219 if (!$actualTheme) {
220 $this->wallabag->messages->add('e', _('that theme does not seem to be installed'));
221 Tools::redirect('?view=config');
222 }
223
224 $this->wallabag->store->updateUserConfig($this->wallabag->user->getId(), 'theme', $newTheme);
225 $this->wallabag->messages->add('s', _('you have changed your theme preferences'));
226
227 $currentConfig = $_SESSION['poche_user']->config;
228 $currentConfig['theme'] = $newTheme;
229
230 $_SESSION['poche_user']->setConfig($currentConfig);
231
232 Tools::emptyCache();
233 Tools::redirect('?view=config');
234 }
235}