Reset scrollpane when setting response text.

Change-Id: I43836666b447b4b8118d9bb620461eb2a55b6d5b
Fixes-Issue: CLIENT-516
Reviewed-on: http://gerrit.dmdirc.com/3628
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>

src/com/dmdirc/addons/ui_swing/dialogs/aliases/AliasManagerDialog.java

 package com.dmdirc.addons.ui_swing.dialogs.aliases;
 
 import com.dmdirc.ClientModule.GlobalConfig;
+import com.dmdirc.addons.ui_swing.UIUtilities;
 import com.dmdirc.addons.ui_swing.components.text.TextLabel;
 import com.dmdirc.addons.ui_swing.components.validating.ValidationFactory;
 import com.dmdirc.addons.ui_swing.dialogs.StandardDialog;
         final JTextArea response = new JTextArea();
         final JButton addAlias = new JButton("Add Alias");
         final JButton deleteAlias = new JButton("Delete Alias");
+        final JScrollPane responseScroll = new JScrollPane(response);
         getOkButton();
         getCancelButton();
         setMinimumSize(new Dimension(800, 400));
         add(ValidationFactory.getValidatorPanel(command, model.getCommandValidator(), iconManager),
                 "growx, pushx");
         add(argumentsNumber, "growx, pushx");
-        add(ValidationFactory.getValidatorPanel(new JScrollPane(response), response,
+        add(ValidationFactory.getValidatorPanel(responseScroll, response,
                 new NotEmptyValidator(), iconManager), "spanx 2, grow, push");
 
         add(getLeftButton(), "flowx, split 3, right, sg button");
         add(getRightButton(), "sg button");
 
+        UIUtilities.addUndoManager(response);
+
         linker.bindCommandList(aliasList);
         linker.bindCommand(command);
         linker.bindArgumentsNumber(argumentsNumber);
-        linker.bindResponse(response);
+        linker.bindResponse(response, responseScroll);
         linker.bindAddAlias(addAlias);
         linker.bindDeleteAlias(deleteAlias);
         linker.bindOKButton(getOkButton());

src/com/dmdirc/addons/ui_swing/dialogs/aliases/AliasManagerLinker.java

 
 package com.dmdirc.addons.ui_swing.dialogs.aliases;
 
+import com.dmdirc.addons.ui_swing.UIUtilities;
 import com.dmdirc.addons.ui_swing.components.GenericListModel;
 import com.dmdirc.addons.ui_swing.components.renderers.PropertyListCellRenderer;
 import com.dmdirc.addons.ui_swing.components.vetoable.VetoableListSelectionModel;
 
 import javax.swing.JButton;
 import javax.swing.JList;
+import javax.swing.JScrollPane;
 import javax.swing.JSpinner;
 import javax.swing.JTextArea;
 import javax.swing.JTextField;
         });
     }
 
-    public void bindResponse(final JTextArea response) {
+    public void bindResponse(final JTextArea response, final JScrollPane responseScroll) {
         response.setEnabled(false);
         response.getDocument().addDocumentListener(new DocumentListener() {
 
             public void aliasSelectionChanged(final Optional<Alias> alias) {
                 response.setEnabled(model.isSubstitutionValid());
                 response.setText(model.getSelectedAliasSubstitution());
+                UIUtilities.resetScrollPane(responseScroll);
             }
 
         });