/**
    * This file Copyright (c) 2012-2018 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.framework.app;
  
  import info.magnolia.ui.api.app.AppView;
  import info.magnolia.ui.api.view.View;
  import info.magnolia.ui.framework.overlay.ViewAdapter;
  import info.magnolia.ui.vaadin.tabsheet.MagnoliaTab;
  import info.magnolia.ui.vaadin.tabsheet.MagnoliaTabSheet;
  
  import com.vaadin.server.ClientConnector.AttachListener;
  import com.vaadin.server.KeyMapper;
  import com.vaadin.server.Page;
  import com.vaadin.server.ThemeResource;
  import com.vaadin.ui.Component;
  
  /**
   * View used to give all apps a uniform look-and-feel.
   *
   * @see info.magnolia.ui.api.app.AppView
   */
  public class DefaultAppView implements AppView {
  
      private Listener listener;
  
      private KeyMapper<MagnoliaTab> mapper = new KeyMapper<MagnoliaTab>();
  
      private final MagnoliaTabSheet tabsheet = new MagnoliaTabSheet() {
  
          @Override
          public void setActiveTab(MagnoliaTab tab) {
              super.setActiveTab(tab);
              String key = mapper.key(tab);
              listener.onFocus(key);
          }
  
          @Override
          public void closeTab(MagnoliaTab tab) {
              super.closeTab(tab);
              String key = mapper.key(tab);
              listener.onClose(key);
              mapper.remove(tab);
          }
      };
  
      public DefaultAppView() {
          super();
          tabsheet.setSizeFull();
          tabsheet.addStyleName("app");
      }
  
      @Override
      public String addSubAppView(View view, String caption, boolean closable) {
          return addSubAppView(view, caption, "", closable);
      }
  
      @Override
      public String addSubAppView(View view, String caption, String icon, boolean closable) {
          final MagnoliaTab tab = tabsheet.addTab(caption, view != null ? view.asVaadinComponent() : null);
          tab.setIcon(icon);
          tab.setClosable(closable);
          if (tabsheet.getActiveTab() != tab) {
              tabsheet.setActiveTab(tab);
          }
          String key = mapper.key(tab);
          return key;
      }
  
     @Override
     public void setActiveSubAppView(String instanceId) {
         tabsheet.setActiveTab(mapper.get(instanceId));
     }
 
     @Override
     public String getActiveSubAppView() {
         return mapper.key(tabsheet.getActiveTab());
     }
 
     @Override
     public void updateCaption(String instanceId, String caption) {
         mapper.get(instanceId).setCaption(caption);
     }
 
     @Override
     public void setTheme(String themeName) {
         String stylename = String.format("app-%s", themeName);
         final String themeUrl = String.format("../%s/styles.css", themeName);
 
         final Component vaadinComponent = asVaadinComponent();
         vaadinComponent.addStyleName(stylename);
         final ThemeResource res = new ThemeResource(themeUrl);
 
         if (vaadinComponent.isAttached()) {
             Page.getCurrent().getStyles().add(res);
         } else {
             vaadinComponent.addAttachListener((AttachListener) event -> Page.getCurrent().getStyles().add(res));
         }
     }
 
     @Override
     public void setListener(Listener listener) {
         this.listener = listener;
     }
 
     @Override
     public MagnoliaTabSheet asVaadinComponent() {
         return tabsheet;
     }
 
     @Override
     public View getSubAppViewContainer(final String instanceId) {
         return new ViewAdapter(mapper.get(instanceId));
     }
 
     @Override
     public void closeSubAppView(String instanceId) {
         tabsheet.closeTabFromServer(mapper.get(instanceId));
     }
 
     @Override
     public void setAppLogo(String logo) {
         setAppLogo(logo, "");
     }
 
     @Override
     public void setAppLogo(String logo, String bgcolor) {
         tabsheet.setLogo(logo, bgcolor);
     }
 
     @Override
     public void setAppName(String name) {
         tabsheet.setName(name);
     }
 
 }