MDL-34955 add full TinyMCE subplugin management

lib/editor/tinymce/classes/plugin.php

@@ -40,6 +40,9 @@ abstract class editor_tinymce_plugin {
     /** @var array Plugin settings */
     protected $config = null;
 
+    /** @var array list of buttons defined by this plugin */
+    protected $buttons = array();
+
     /**
      * @param string $plugin Name of folder
      */
@@ -47,6 +50,15 @@ abstract class editor_tinymce_plugin {
         $this->plugin = $plugin;
     }
 
+    /**
+     * Returns list of buttons defined by this plugin.
+     * useful mostly as information when setting custom toolbar.
+     *
+     * @return array
+     */
+    public function get_buttons() {
+        return $this->buttons;
+    }
     /**
      * Makes sure config is loaded and cached.
      * @return void
@@ -326,9 +338,23 @@ abstract class editor_tinymce_plugin {
         // Get list of plugin directories.
         $plugins = get_plugin_list('tinymce');
 
+        // Get list of disabled subplugins.
+        $disabled = array();
+        if ($params['moodle_config']->disabledsubplugins) {
+            foreach (explode(',', $params['moodle_config']->disabledsubplugins) as $sp) {
+                $sp = trim($sp);
+                if ($sp !== '') {
+                    $disabled[$sp] = $sp;
+                }
+            }
+        }
+
         // Construct all the plugins.
         $pluginobjects = array();
         foreach ($plugins as $plugin => $dir) {
+            if (isset($disabled[$plugin])) {
+                continue;
+            }
             require_once($dir . '/lib.php');
             $classname = 'tinymce_' . $plugin;
             $pluginobjects[] = new $classname($plugin);