Changeset 9856 for trunk/gli/src/org/greenstone/gatherer/metadata/MetadataXMLFileManager.java

Timestamp:

2005-05-12T12:24:38+12:00 (19 years ago)

Author:

mdewsnip

Message:

Major changes to the metadata value table and tree in the Enrich pane. The metadata value table now allows direct editing in the table -- hopefully much more obvious to the user. Classes involved have been untangled and are much more re-usable. Special code for replacing metadata has been added, which uses a more direct and efficient method rather than removing then adding metadata as before. And many many minor tidy-ups.

File:

• trunk/gli/src/org/greenstone/gatherer/metadata/MetadataXMLFileManager.java (modified) (5 diffs)

trunk/gli/src/org/greenstone/gatherer/metadata/MetadataXMLFileManager.java

@@ -7 +7 @@
  * Author: Michael Dewsnip, NZDL Project, University of Waikato, NZ
  *
- * Copyright (C) 2004 New Zealand Digital Library Project
+ * Copyright (C) 2005 New Zealand Digital Library Project
  *
  * This program is free software; you can redistribute it and/or modify
@@ -40 +40 @@
 {
     static private ArrayList metadata_xml_files = new ArrayList();
+    /** The objects listening for MetadataChanged events. */
+    static private ArrayList metadata_changed_listeners = new ArrayList();
 
 
@@ -83 +85 @@
         }
     }
+
+    // Let any listeners know that the metadata has changed
+    fireMetadataChangedEvent(file_nodes);
+    }
+
+
+    static public void addMetadataChangedListener(MetadataChangedListener metadata_changed_listener)
+    {
+    metadata_changed_listeners.add(metadata_changed_listener);
     }
 
@@ -89 +100 @@
     {
     metadata_xml_files.clear();
+    }
+
+
+    static private void fireMetadataChangedEvent(CollectionTreeNode[] file_nodes)
+    {
+    // Send the event off to all the MetadataChangedListeners
+    for (int i = 0; i < metadata_changed_listeners.size(); i++) {
+        ((MetadataChangedListener) metadata_changed_listeners.get(i)).metadataChanged(file_nodes);
+    }
     }
 
@@ -254 +274 @@
         }
     }
+
+    // Let any listeners know that the metadata has changed
+    fireMetadataChangedEvent(file_nodes);
+    }
+
+
+    static public void removeMetadataChangedListener(MetadataChangedListener metadata_changed_listener)
+    {
+    metadata_changed_listeners.remove(metadata_changed_listener);
+    }
+
+
+    static public void replaceMetadata(CollectionTreeNode[] file_nodes, MetadataValue old_metadata_value, MetadataValue new_metadata_value)
+    {
+    // Replace the metadata in each file node in turn
+    for (int i = 0; i < file_nodes.length; i++) {
+        File current_file = file_nodes[i].getFile();
+        DebugStream.println("Replacing metadata in " + current_file.getAbsolutePath());
+
+        // Find which metadata.xml file needs editing
+        File current_file_directory = (current_file.isDirectory() ? current_file : current_file.getParentFile());
+        for (int j = 0; j < metadata_xml_files.size(); j++) {
+        MetadataXMLFile metadata_xml_file = (MetadataXMLFile) metadata_xml_files.get(j);
+
+        // This metadata.xml file is only applicable if it is at the same level as the file
+        if (current_file_directory.getAbsolutePath().equals(metadata_xml_file.getParentFile().getAbsolutePath())) {
+            metadata_xml_file.replaceMetadata(current_file, old_metadata_value, new_metadata_value);
+        }
+        }
+    }
+
+    // Let any listeners know that the metadata has changed
+    fireMetadataChangedEvent(file_nodes);
     }