feature 1605: ability to forbid theme activation, needed for gally-default.

git-svn-id: http://piwigo.org/svn/trunk@5874 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/include/themes.class.php

@@ -382,6 +382,10 @@ SELECT
           {
             $theme['parent'] = $val[1];
           }
+          if (preg_match('/["\']activable["\'].*?(true|false)/', $theme_data, $val))
+          {
+            $theme['activable'] = get_boolean($val[1]);
+          }
 
           // screenshot
           $screenshot_path = $path.'/screenshot.png';

admin/themes_installed.php

@@ -99,7 +99,14 @@ foreach ($themes->fs_themes as $theme_id => $fs_theme)
   else
   {
     // is the theme "activable" ?
-    $fs_theme['activable'] = true;
+    if (isset($fs_theme['activable']) and !$fs_theme['activable'])
+    {
+      $fs_theme['activate_tooltip'] = l10n('This theme was not designed to be directly activated');
+    }
+    else
+    {
+      $fs_theme['activable'] = true;
+    }
 
     $missing_parent = $themes->missing_parent_theme($theme_id);
     if (isset($missing_parent))