Wired up the field editor to generate and receive attr changed events.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1429 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/admin/client/FieldEditor.java

@@ -1,5 +1,5 @@
 //
-// $Id: FieldEditor.java,v 1.1 2002/06/07 06:22:24 mdb Exp $
+// $Id: FieldEditor.java,v 1.2 2002/06/07 17:34:37 mdb Exp $
 
 package com.threerings.admin.client;
 
@@ -12,14 +12,18 @@ import javax.swing.BorderFactory;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
+import javax.swing.event.AncestorEvent;
 
 import com.samskivert.swing.HGroupLayout;
+import com.samskivert.swing.event.AncestorAdapter;
 
 import com.threerings.presents.dobj.AttributeChangeListener;
 import com.threerings.presents.dobj.AttributeChangedEvent;
 import com.threerings.presents.dobj.DObject;
 import com.threerings.presents.util.PresentsContext;
 
+import com.threerings.admin.Log;
+
 /**
  * Used to display and edit a particular distributed object field.
  */
@@ -42,36 +46,67 @@ public class FieldEditor extends JPanel
         add(_label = new JLabel(_field.getName()), HGroupLayout.FIXED);
 
         // and a text entry field to display the field value
-        String value = "";
-        try {
-            value = String.valueOf(_field.get(_object));
-        } catch (IllegalAccessException iae) {
-            value = "<error>";
-        }
-        add(_value = new JTextField(value));
+        add(_value = new JTextField());
         _value.addActionListener(this);
+
+        // listen while we're shown and not when we're not
+        addAncestorListener(new AncestorAdapter () {
+            public void ancestorAdded (AncestorEvent event) {
+                _object.addListener(FieldEditor.this);
+                readValue();
+            }
+            public void ancestorRemoved (AncestorEvent event) {
+                _object.removeListener(FieldEditor.this);
+            }
+        });
     }
 
     // documentation inherited from interface
     public void attributeChanged (AttributeChangedEvent event)
     {
-        _value.setText(String.valueOf(event.getValue()));
-        updateBorder(false);
+        readValue();
+    }
+
+    /**
+     * Reads the value from the distributed object field and updates the
+     * editor field appropriately.
+     */
+    protected void readValue ()
+    {
+        String value = "";
+        try {
+            value = String.valueOf(_field.get(_object));
+            updateBorder(false);
+        } catch (IllegalAccessException iae) {
+            value = "<error>";
+            updateBorder(true);
+        }
+        _value.setText(String.valueOf(value));
     }
 
     // documentation inherited from interface
     public void actionPerformed (ActionEvent event)
     {
+        Object value = null;
+
+        // parse the new value
         if (_field.getType().equals(Integer.class) ||
             _field.getType().equals(Integer.TYPE)) {
             try {
-                Integer value = new Integer(_value.getText());
-                AttributeChangedEvent ace = new AttributeChangedEvent(
-                    _object.getOid(), _field.getName(), value);
-                _ctx.getDObjectManager().postEvent(ace);
+                value = new Integer(_value.getText());
             } catch (NumberFormatException nfe) {
                 updateBorder(true);
             }
+
+        } else if (_field.getType().equals(String.class)) {
+            value = _value.getText();
+        }
+
+        // submit an attribute changed event with the new value
+        if (value != null) {
+            AttributeChangedEvent ace = new AttributeChangedEvent(
+                _object.getOid(), _field.getName(), value);
+            _ctx.getDObjectManager().postEvent(ace);
         }
     }
 
@@ -91,7 +126,6 @@ public class FieldEditor extends JPanel
     protected PresentsContext _ctx;
     protected Field _field;
     protected DObject _object;
-
     protected JLabel _label;
     protected JTextField _value;
 }