Allow plugins to specify that they have to be instantiated

Plugins may return false in isSingleton to let plugin_load return a new
instance every time it is called.
Renderer plugins are not loaded with $new set to true, but instead specify
themself that they are not singletons. This behaviour allows the odt renderer
to keep working (see #1598).

1 files changed, 9 insertions, 0 deletions

diff --git a/inc/parser/renderer.php b/inc/parser/renderer.php
index 393099003..4dac75d21 100644
--- a/inc/parser/renderer.php
+++ b/inc/parser/renderer.php
@@ -49,6 +49,15 @@ class Doku_Renderer extends DokuWiki_Plugin {
         trigger_error('getFormat() not implemented in '.get_class($this), E_USER_WARNING);
     }
 
+    /**
+     * Allow the plugin to prevent DokuWiki from reusing an instance
+     *
+     * @return bool   false if the plugin has to be instantiated
+     */
+    function isSingleton() {
+        return false;
+    }
+
 
     //handle plugin rendering
     function plugin($name,$data){