MDL-57476 file: Add CUD callbacks

lib/filestorage/file_storage.php

@@ -1020,6 +1020,27 @@ public function create_directory($contextid, $component, $filearea, $itemid, $fi
         return $dir_info;
     }
 
+    /**
+     * Add new file record to database and handle callbacks.
+     *
+     * @param stdClass $newrecord
+     */
+    protected function create_file($newrecord) {
+        global $DB;
+        $newrecord->id = $DB->insert_record('files', $newrecord);
+
+        if ($newrecord->filename !== '.') {
+            // Callback for file created.
+            if ($pluginsfunction = get_plugins_with_function('after_file_created')) {
+                foreach ($pluginsfunction as $plugintype => $plugins) {
+                    foreach ($plugins as $pluginfunction) {
+                        $pluginfunction($newrecord);
+                    }
+                }
+            }
+        }
+    }
+
     /**
      * Add new local file based on existing local file.
      *
@@ -1134,7 +1155,7 @@ public function create_file_from_storedfile($filerecord, $fileorid) {
         }
 
         try {
-            $newrecord->id = $DB->insert_record('files', $newrecord);
+            $this->create_file($newrecord);
         } catch (dml_exception $e) {
             throw new stored_file_creation_exception($newrecord->contextid, $newrecord->component, $newrecord->filearea, $newrecord->itemid,
                                                      $newrecord->filepath, $newrecord->filename, $e->debuginfo);
@@ -1302,7 +1323,7 @@ public function create_file_from_pathname($filerecord, $pathname) {
         $newrecord->pathnamehash = $this->get_pathname_hash($newrecord->contextid, $newrecord->component, $newrecord->filearea, $newrecord->itemid, $newrecord->filepath, $newrecord->filename);
 
         try {
-            $newrecord->id = $DB->insert_record('files', $newrecord);
+            $this->create_file($newrecord);
         } catch (dml_exception $e) {
             if ($newfile) {
                 $this->move_to_trash($newrecord->contenthash);
@@ -1421,7 +1442,7 @@ public function create_file_from_string($filerecord, $content) {
         $newrecord->pathnamehash = $this->get_pathname_hash($newrecord->contextid, $newrecord->component, $newrecord->filearea, $newrecord->itemid, $newrecord->filepath, $newrecord->filename);
 
         try {
-            $newrecord->id = $DB->insert_record('files', $newrecord);
+            $this->create_file($newrecord);
         } catch (dml_exception $e) {
             if ($newfile) {
                 $this->move_to_trash($newrecord->contenthash);

lib/filestorage/stored_file.php

@@ -139,6 +139,7 @@ protected function update($dataobject) {
         global $DB;
         $updatereferencesneeded = false;
         $keys = array_keys((array)$this->file_record);
+        $filepreupdate = clone($this->file_record);
         foreach ($dataobject as $field => $value) {
             if (in_array($field, $keys)) {
                 if ($field == 'contextid' and (!is_number($value) or $value < 1)) {
@@ -216,6 +217,17 @@ protected function update($dataobject) {
             // Either filesize or contenthash of this file have changed. Update all files that reference to it.
             $this->fs->update_references_to_storedfile($this);
         }
+
+        // Callback for file update.
+        if (!$this->is_directory()) {
+            if ($pluginsfunction = get_plugins_with_function('after_file_updated')) {
+                foreach ($pluginsfunction as $plugintype => $plugins) {
+                    foreach ($plugins as $pluginfunction) {
+                        $pluginfunction($this->file_record, $filepreupdate);
+                    }
+                }
+            }
+        }
     }
 
     /**
@@ -375,6 +387,17 @@ public function delete() {
             $DB->delete_records('files', array('id'=>$this->file_record->id));
 
             $transaction->allow_commit();
+
+            if (!$this->is_directory()) {
+                // Callback for file deletion.
+                if ($pluginsfunction = get_plugins_with_function('after_file_deleted')) {
+                    foreach ($pluginsfunction as $plugintype => $plugins) {
+                        foreach ($plugins as $pluginfunction) {
+                            $pluginfunction($this->file_record);
+                        }
+                    }
+                }
+            }
         }
 
         // Move pool file to trash if content not needed any more.
@@ -815,9 +838,20 @@ public function get_sortorder() {
      * @return int
      */
     public function set_sortorder($sortorder) {
+        $oldorder = $this->file_record->sortorder;
         $filerecord = new stdClass;
         $filerecord->sortorder = $sortorder;
         $this->update($filerecord);
+        if (!$this->is_directory()) {
+            // Callback for file sort order change.
+            if ($pluginsfunction = get_plugins_with_function('after_file_sorted')) {
+                foreach ($pluginsfunction as $plugintype => $plugins) {
+                    foreach ($plugins as $pluginfunction) {
+                        $pluginfunction($this->file_record, $oldorder, $sortorder);
+                    }
+                }
+            }
+        }
     }
 
     /**