application/render/PageBuilder.php

   1 <?php
   2
   3 namespace Shaarli\Render;
   4
   5 use ApplicationUtils;
   6 use Exception;
   7 use Shaarli\Bookmark\LinkDB;
   8 use RainTPL;
   9 use Shaarli\Config\ConfigManager;
  10 use Shaarli\Thumbnailer;
  11
  12 /**
  13  * This class is in charge of building the final page.
  14  * (This is basically a wrapper around RainTPL which pre-fills some fields.)
  15  * $p = new PageBuilder();
  16  * $p->assign('myfield','myvalue');
  17  * $p->renderPage('mytemplate');
  18  */
  19 class PageBuilder
  20 {
  21     /**
  22      * @var RainTPL RainTPL instance.
  23      */
  24     private $tpl;
  25
  26     /**
  27      * @var ConfigManager $conf Configuration Manager instance.
  28      */
  29     protected $conf;
  30
  31     /**
  32      * @var array $_SESSION
  33      */
  34     protected $session;
  35
  36     /**
  37      * @var LinkDB $linkDB instance.
  38      */
  39     protected $linkDB;
  40
  41     /**
  42      * @var null|string XSRF token
  43      */
  44     protected $token;
  45
  46     /**
  47      * @var bool $isLoggedIn Whether the user is logged in
  48      */
  49     protected $isLoggedIn = false;
  50
  51     /**
  52      * PageBuilder constructor.
  53      * $tpl is initialized at false for lazy loading.
  54      *
  55      * @param ConfigManager $conf       Configuration Manager instance (reference).
  56      * @param array         $session    $_SESSION array
  57      * @param LinkDB        $linkDB     instance.
  58      * @param string        $token      Session token
  59      * @param bool          $isLoggedIn
  60      */
  61     public function __construct(&$conf, $session, $linkDB = null, $token = null, $isLoggedIn = false)
  62     {
  63         $this->tpl = false;
  64         $this->conf = $conf;
  65         $this->session = $session;
  66         $this->linkDB = $linkDB;
  67         $this->token = $token;
  68         $this->isLoggedIn = $isLoggedIn;
  69     }
  70
  71     /**
  72      * Initialize all default tpl tags.
  73      */
  74     private function initialize()
  75     {
  76         $this->tpl = new RainTPL();
  77
  78         try {
  79             $version = ApplicationUtils::checkUpdate(
  80                 SHAARLI_VERSION,
  81                 $this->conf->get('resource.update_check'),
  82                 $this->conf->get('updates.check_updates_interval'),
  83                 $this->conf->get('updates.check_updates'),
  84                 $this->isLoggedIn,
  85                 $this->conf->get('updates.check_updates_branch')
  86             );
  87             $this->tpl->assign('newVersion', escape($version));
  88             $this->tpl->assign('versionError', '');
  89         } catch (Exception $exc) {
  90             logm($this->conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], $exc->getMessage());
  91             $this->tpl->assign('newVersion', '');
  92             $this->tpl->assign('versionError', escape($exc->getMessage()));
  93         }
  94
  95         $this->tpl->assign('is_logged_in', $this->isLoggedIn);
  96         $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
  97         $searchcrits = ''; // Search criteria
  98         if (!empty($_GET['searchtags'])) {
  99             $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
 100         }
 101         if (!empty($_GET['searchterm'])) {
 102             $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
 103         }
 104         $this->tpl->assign('searchcrits', $searchcrits);
 105         $this->tpl->assign('source', index_url($_SERVER));
 106         $this->tpl->assign('version', SHAARLI_VERSION);
 107         $this->tpl->assign(
 108             'version_hash',
 109             ApplicationUtils::getVersionHash(SHAARLI_VERSION, $this->conf->get('credentials.salt'))
 110         );
 111         $this->tpl->assign('index_url', index_url($_SERVER));
 112         $visibility = !empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 113         $this->tpl->assign('visibility', $visibility);
 114         $this->tpl->assign('untaggedonly', !empty($_SESSION['untaggedonly']));
 115         $this->tpl->assign('pagetitle', $this->conf->get('general.title', 'Shaarli'));
 116         if ($this->conf->exists('general.header_link')) {
 117             $this->tpl->assign('titleLink', $this->conf->get('general.header_link'));
 118         }
 119         $this->tpl->assign('shaarlititle', $this->conf->get('general.title', 'Shaarli'));
 120         $this->tpl->assign('openshaarli', $this->conf->get('security.open_shaarli', false));
 121         $this->tpl->assign('showatom', $this->conf->get('feed.show_atom', true));
 122         $this->tpl->assign('feed_type', $this->conf->get('feed.show_atom', true) !== false ? 'atom' : 'rss');
 123         $this->tpl->assign('hide_timestamps', $this->conf->get('privacy.hide_timestamps', false));
 124         $this->tpl->assign('token', $this->token);
 125
 126         if ($this->linkDB !== null) {
 127             $this->tpl->assign('tags', $this->linkDB->linksCountPerTag());
 128         }
 129
 130         $this->tpl->assign(
 131             'thumbnails_enabled',
 132             $this->conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
 133         );
 134         $this->tpl->assign('thumbnails_width', $this->conf->get('thumbnails.width'));
 135         $this->tpl->assign('thumbnails_height', $this->conf->get('thumbnails.height'));
 136
 137         if (!empty($_SESSION['warnings'])) {
 138             $this->tpl->assign('global_warnings', $_SESSION['warnings']);
 139             unset($_SESSION['warnings']);
 140         }
 141
 142         // To be removed with a proper theme configuration.
 143         $this->tpl->assign('conf', $this->conf);
 144     }
 145
 146     /**
 147      * The following assign() method is basically the same as RainTPL (except lazy loading)
 148      *
 149      * @param string $placeholder Template placeholder.
 150      * @param mixed  $value       Value to assign.
 151      */
 152     public function assign($placeholder, $value)
 153     {
 154         if ($this->tpl === false) {
 155             $this->initialize();
 156         }
 157         $this->tpl->assign($placeholder, $value);
 158     }
 159
 160     /**
 161      * Assign an array of data to the template builder.
 162      *
 163      * @param array $data Data to assign.
 164      *
 165      * @return false if invalid data.
 166      */
 167     public function assignAll($data)
 168     {
 169         if ($this->tpl === false) {
 170             $this->initialize();
 171         }
 172
 173         if (empty($data) || !is_array($data)) {
 174             return false;
 175         }
 176
 177         foreach ($data as $key => $value) {
 178             $this->assign($key, $value);
 179         }
 180         return true;
 181     }
 182
 183     /**
 184      * Render a specific page (using a template file).
 185      * e.g. $pb->renderPage('picwall');
 186      *
 187      * @param string $page Template filename (without extension).
 188      */
 189     public function renderPage($page)
 190     {
 191         if ($this->tpl === false) {
 192             $this->initialize();
 193         }
 194
 195         $this->tpl->draw($page);
 196     }
 197
 198     /**
 199      * Render a 404 page (uses the template : tpl/404.tpl)
 200      * usage: $PAGE->render404('The link was deleted')
 201      *
 202      * @param string $message A message to display what is not found
 203      */
 204     public function render404($message = '')
 205     {
 206         if (empty($message)) {
 207             $message = t('The page you are trying to reach does not exist or has been deleted.');
 208         }
 209         header($_SERVER['SERVER_PROTOCOL'] . ' ' . t('404 Not Found'));
 210         $this->tpl->assign('error_message', $message);
 211         $this->renderPage('404');
 212     }
 213 }