Index: trunk/src/org/openstreetmap/josm/gui/preferences/advanced/ExportProfileAction.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/preferences/advanced/ExportProfileAction.java	(revision 6023)
+++ trunk/src/org/openstreetmap/josm/gui/preferences/advanced/ExportProfileAction.java	(revision 6023)
@@ -0,0 +1,79 @@
+// License: GPL. See LICENSE file for details.
+package org.openstreetmap.josm.gui.preferences.advanced;
+
+import java.awt.event.ActionEvent;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Map;
+import javax.swing.AbstractAction;
+import javax.swing.JFileChooser;
+import javax.swing.JOptionPane;
+import javax.swing.filechooser.FileFilter;
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.actions.DiskAccessAction;
+import org.openstreetmap.josm.data.CustomConfigurator;
+import org.openstreetmap.josm.data.Preferences;
+import org.openstreetmap.josm.data.Preferences.Setting;
+
+import static org.openstreetmap.josm.tools.I18n.tr;
+
+/**
+ * Action that exports some fragment of settings to custom configuration file
+ */
+public class ExportProfileAction extends AbstractAction {
+    private final String prefPattern;
+    private final String schemaKey;
+    private final Preferences prefs;
+
+    public ExportProfileAction(Preferences prefs, String schemaKey, String prefPattern) {
+        super(tr("Save {0} profile", tr(schemaKey)));
+        this.prefs = prefs;
+        this.prefPattern = prefPattern;
+        this.schemaKey = schemaKey;
+    }
+    
+    @Override
+    public void actionPerformed(ActionEvent ae) {
+        ArrayList<String> keys = new ArrayList<String>();
+        Map<String, Setting> all = prefs.getAllSettings();
+        for (String key: all.keySet()) {
+            if (key.matches(prefPattern)) {
+                keys.add(key);
+            }
+        }
+        if (keys.isEmpty()) {
+            JOptionPane.showMessageDialog(Main.parent,
+                    tr("All the preferences of this group are default, nothing to save"), tr("Warning"), JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+        File f = askUserForCustomSettingsFile();
+        if (f!=null)
+           CustomConfigurator.exportPreferencesKeysToFile(f.getAbsolutePath(), false, keys);
+    }
+    
+    private File askUserForCustomSettingsFile() {
+        String title = tr("Choose profile file");
+        
+        FileFilter filter = new FileFilter() {
+            @Override
+            public boolean accept(File f) {
+                return f.isDirectory() || f.getName().toLowerCase().endsWith(".xml") && f.getName().toLowerCase().startsWith(schemaKey);
+            }
+            @Override
+            public String getDescription() {
+                return tr("JOSM custom settings files (*.xml)");
+            }
+        };
+        JFileChooser fc = DiskAccessAction.createAndOpenFileChooser(false, false, title, filter, JFileChooser.FILES_ONLY, "customsettings.lastDirectory");
+        if (fc != null) {
+            File sel = fc.getSelectedFile();
+            if (!sel.getName().endsWith(".xml")) sel=new File(sel.getAbsolutePath()+".xml");
+            if (!sel.getName().startsWith(schemaKey)) {
+                System.out.println(sel.getParentFile().getAbsolutePath()+"/"+schemaKey+"_"+sel.getName());
+                sel =new File(sel.getParentFile().getAbsolutePath()+"/"+schemaKey+"_"+sel.getName());
+            }
+            return sel;
+        } 
+        return null;
+    }
+}