Allow preferred width or height to be overridden since it seems that

JScrollPane will happily return some insane value when it's wrapping an
empty JList.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2314 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/SafeScrollPane.java

@@ -1,9 +1,10 @@
 //
-// $Id: SafeScrollPane.java,v 1.6 2002/11/05 21:03:31 mdb Exp $
+// $Id: SafeScrollPane.java,v 1.7 2003/03/22 01:56:09 mdb Exp $
 
 package com.threerings.media;
 
 import java.awt.Component;
+import java.awt.Dimension;
 import java.awt.Point;
 
 import javax.swing.JComponent;
@@ -24,6 +25,29 @@ public class SafeScrollPane extends JScrollPane
         super(view);
     }
 
+    public SafeScrollPane (Component view, int owidth, int oheight)
+    {
+        super(view);
+        if (owidth != 0 || oheight != 0) {
+            _override = new Dimension(owidth, oheight);
+        }
+    }
+
+    // documentation inherited
+    public Dimension getPreferredSize ()
+    {
+        Dimension d = super.getPreferredSize();
+        if (_override != null) {
+            if (_override.width != 0) {
+                d.width = _override.width;
+            }
+            if (_override.height != 0) {
+                d.height = _override.height;
+            }
+        }
+        return d;
+    }
+
     protected JViewport createViewport ()
     {
         JViewport vp = new JViewport() {
@@ -42,4 +66,6 @@ public class SafeScrollPane extends JScrollPane
         vp.setScrollMode(JViewport.SIMPLE_SCROLL_MODE);
         return vp;
     }
+
+    protected Dimension _override;
 }