/**
    * This file Copyright (c) 2013-2016 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.ui.admincentral.usermenu;
  
  import info.magnolia.ui.vaadin.actionbar.ActionPopup;
  import info.magnolia.ui.vaadin.usermenu.UserMenu;
  
  import org.vaadin.peter.contextmenu.ContextMenu;
  import org.vaadin.peter.contextmenu.ContextMenu.ContextMenuClosedEvent;
  import org.vaadin.peter.contextmenu.ContextMenu.ContextMenuClosedListener;
  
  import com.vaadin.server.ExternalResource;
  import com.vaadin.ui.Button.ClickEvent;
  import com.vaadin.ui.Button.ClickListener;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.NativeButton;
  
  /**
   * Implementation of {@link UserMenuView}. Basically a button, which opens the {@link info.magnolia.ui.vaadin.usermenu.UserMenu} when clicked.
   */
  public class UserMenuViewImpl implements UserMenuView {
  
      private final NativeButton button = new NativeButton();
      private final UserMenu menu = new UserMenu();
      private UserMenuView.Listener listener;
      private String caption;
  
      public UserMenuViewImpl() {
          button.setStyleName("user-menu");
          button.setHtmlContentAllowed(true);
  
          menu.setAsContextMenuOf(button);
  
          button.addClickListener(new ClickListener() {
              @Override
              public void buttonClick(ClickEvent event) {
                  menu.open();
                  updateButton(caption, true);
              }
          });
  
          menu.addContextMenuCloseListener(new ContextMenuClosedListener() {
  
              @Override
              public void onContextMenuClosed(ContextMenuClosedEvent event) {
                  updateButton(caption, false);
              }
          });
      }
  
      @Override
      public void setCaption(String caption) {
          updateButton(caption, false);
          this.caption = caption;
      }
  
      private void updateButton(String caption, boolean open) {
          String text = caption + ((open) ? "<span class=\"icon-arrow2_n\"></span>" : "<span class=\"icon-arrow2_s\"></span>");
          button.setCaption(text);
      }
  
      @Override
      public void setListener(UserMenuView.Listener listener) {
          this.listener = listener;
      }
  
      @Override
      @Deprecated
     public void addAction(String actionName, String label) {
         addAction(actionName, label, "");
     }
 
     @Override
     public void addAction(final String actionName, String label, String icon) {
         String iconFontCode = ActionPopup.ICON_FONT_CODE + icon;
         ExternalResource iconFontResource = new ExternalResource(iconFontCode);
 
         menu.addItem(label, iconFontResource).addItemClickListener(new ContextMenu.ContextMenuItemClickListener() {
             @Override
             public void contextMenuItemClicked(ContextMenu.ContextMenuItemClickEvent event) {
                 listener.onAction(actionName);
             }
         });
     }
 
     @Override
     public Component asVaadinComponent() {
         return button;
     }
 }