org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/components/BaseWizardPage.java

   1 /*******************************************************************************
   2  * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *******************************************************************************/
   9 package org.eclipse.egit.ui.internal.components;
  10
  11 import java.util.LinkedList;
  12 import java.util.List;
  13
  14 import org.eclipse.jface.wizard.WizardPage;
  15
  16 /**
  17  * Base wizard page class for pages that need support for inter-pages
  18  * dependencies.
  19  * <p>
  20  * This abstract class maintains list of selection change listeners and provides
  21  * method to notify them about selection change.
  22  *
  23  * @see SelectionChangeListener
  24  */
  25 public abstract class BaseWizardPage extends WizardPage {
  26         private final List<SelectionChangeListener> selectionListeners;
  27
  28         /**
  29          * Create base wizard with specified name. Listeners list is empty.
  30          *
  31          * @see WizardPage#WizardPage(String)
  32          * @param pageName
  33          *            page name.
  34          */
  35         public BaseWizardPage(final String pageName) {
  36                 super(pageName);
  37                 selectionListeners = new LinkedList<SelectionChangeListener>();
  38         }
  39
  40         /**
  41          * Add {@link SelectionChangeListener} to list of listeners notified on
  42          * selection change on this page.
  43          *
  44          * @param l
  45          *            listener that will be notified about changes.
  46          */
  47         public void addSelectionListener(final SelectionChangeListener l) {
  48                 selectionListeners.add(l);
  49         }
  50
  51         /**
  52          * Notifies registered listeners about selection change.
  53          */
  54         protected void notifySelectionChanged() {
  55                 for (final SelectionChangeListener l : selectionListeners)
  56                         l.selectionChanged();
  57         }
  58
  59 }