Changeset 4638 for trunk/gli/src/org/greenstone/gatherer/cdm/ClassifierManager.java

Timestamp:

2003-06-13T11:24:14+12:00 (21 years ago)

Author:

kjdon

Message:

the remove and configure plugin/classifier buttons are now disabled if there is no selection in the list. also teh two lists have been made singly selectable - no more multiple selections

File:

• trunk/gli/src/org/greenstone/gatherer/cdm/ClassifierManager.java (modified) (7 diffs)

trunk/gli/src/org/greenstone/gatherer/cdm/ClassifierManager.java

@@ -70 +70 @@
 import javax.swing.JScrollPane;
 import javax.swing.JTextArea;
+import javax.swing.ListSelectionModel;
 import javax.swing.event.ListSelectionEvent;
 import javax.swing.event.ListSelectionListener;
@@ -742 +743 @@
         classifier_model.add(((Classifier)classifiers[i]).getName());
         }
-                // Now we add custom classifiers.
+        // Now we add custom classifiers.
         addCustomClassifiers(classifier_model);
         Collections.sort(classifier_model);
-                // Create
+        // Create
         add = new JButton(get("Add"));
         JPanel button_pane = new JPanel();
         JPanel central_pane = new JPanel();
         configure = new JButton(get("Configure"));
+        configure.setEnabled(false);
         JPanel header_pane = new JPanel();
         instructions = new JTextArea(get("Instructions"));
@@ -761 +763 @@
         JLabel classifier_label = new JLabel(get("Classifier"));
         classifier_list = new JList(assigned);
+        classifier_list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
         JLabel classifier_list_label = new JLabel(get("Assigned"));
         classifier_list_label.setHorizontalAlignment(JLabel.CENTER);
@@ -767 +770 @@
         JPanel classifier_pane = new JPanel();
         remove = new JButton(get("Remove"));
+        remove.setEnabled(false);
         JLabel title = new JLabel(get("Title"));
         title.setHorizontalAlignment(JLabel.CENTER);
         title.setOpaque(true);
         JPanel temp = new JPanel(new BorderLayout());
-                // Listeners
+        // Listeners
         add.addActionListener(new AddListener());
         configure.addActionListener(new ConfigureListener());
         remove.addActionListener(new RemoveListener());
         classifier_list.addMouseListener(new ClickListener());
-                // Layout
+        classifier_list.addListSelectionListener(new ListListener());
+        // Layout
         title.setBorder(BorderFactory.createEmptyBorder(0,0,2,0));
         instructions.setBorder(BorderFactory.createEmptyBorder(2,5,2,5));
@@ -795 +800 @@
         button_pane.add(configure);
         button_pane.add(remove);
-                // Scope these mad bordering skillz.
+        // Scope these mad bordering skillz.
         temp.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createEmptyBorder(5,0,5,0), BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder(get("Controls")), BorderFactory.createEmptyBorder(2,2,2,2))));
         temp.add(classifier_pane, BorderLayout.NORTH);
@@ -829 +834 @@
             */
     private void addCustomClassifiers(ArrayList classifier_model) {
-                //classifier_model.add("CustomAZList");
-                // Search for classifiers under the org.greenstone.gatherer.cdm.custom directory.
+        //classifier_model.add("CustomAZList");
+        // Search for classifiers under the org.greenstone.gatherer.cdm.custom directory.
         File custom_directory = new File(Utility.BASE_DIR + "classes" + File.separator + "org" + File.separator + "greenstone" + File.separator + "gatherer" + File.separator + "cdm" + File.separator + "custom");
         if(custom_directory.exists()) {
@@ -1002 +1007 @@
     }
 
+    /** listens for changes in the list selection and enables the configure and remove buttons if there is a selection, disables them if there is no selection */
+    private class ListListener
+        implements ListSelectionListener {
+
+        public void valueChanged(ListSelectionEvent e) {
+        if (!e.getValueIsAdjusting()) { // we get two events for one change in list selection - use the false one ( the second one) 
+            if (classifier_list.isSelectionEmpty()) {
+            configure.setEnabled(false);
+            remove.setEnabled(false);
+            } else {
+            configure.setEnabled(true);
+            remove.setEnabled(true);
+            }
+        }
+        }
+    }
     /** This class listens for actions upon the remove button in the controls, and if detected calls the removeClassifier() method.
             */