/**
    * This file Copyright (c) 2010-2017 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.vaadin.tabsheet;
  
  import info.magnolia.ui.vaadin.common.ComponentIterator;
  import info.magnolia.ui.vaadin.gwt.client.tabsheet.connector.MagnoliaTabSheetState;
  import info.magnolia.ui.vaadin.gwt.client.tabsheet.rpc.MagnoliaTabSheetClientRpc;
  import info.magnolia.ui.vaadin.gwt.client.tabsheet.rpc.MagnoliaTabSheetServerRpc;
  import info.magnolia.ui.vaadin.gwt.client.tabsheet.util.CollectionUtil;
  
  import java.util.Iterator;
  import java.util.LinkedList;
  import java.util.List;
  
  import com.vaadin.shared.Connector;
  import com.vaadin.ui.AbstractComponentContainer;
  import com.vaadin.ui.Component;
  
  /**
   * Simple lightweight tabsheet component.
   */
  public class MagnoliaTabSheet extends AbstractComponentContainer {
  
      private final List<MagnoliaTab> tabs = new LinkedList<MagnoliaTab>();
  
      public MagnoliaTabSheet() {
          super();
          setImmediate(true);
          registerRpc(new MagnoliaTabSheetServerRpc() {
              @Override
              public void setActiveTab(Connector tabConnector) {
                  MagnoliaTabSheet.this.setActiveTab((MagnoliaTab) tabConnector);
              }
  
              @Override
              public void closeTab(Connector tabConnector) {
                  MagnoliaTabSheet.this.closeTab((MagnoliaTab) tabConnector);
              }
  
              @Override
              public void setShowAll() {
                  MagnoliaTabSheet.this.showAll();
              }
          });
      }
  
      protected void showAll() {
          Iterator<Component> it = iterator();
          while (it.hasNext()) {
              MagnoliaTab tabIt = (MagnoliaTab) it.next();
              if (tabIt.getContent() != null) {
                  tabIt.getContent().setVisible(true);
              }
          }
          getState().activeTab = null;
          getState().showAllEnabled = true;
      }
  
      @Override
      public void addComponent(final Component c) {
          if (c instanceof MagnoliaTab) {
              doAddTab((MagnoliaTab) c);
          } else {
              addTab("", c);
          }
      }
  
      public MagnoliaTab addTab(final String caption, final Component c) {
         final MagnoliaTab tab = new MagnoliaTab(caption, c);
         doAddTab(tab);
         return tab;
     }
 
     @Override
     protected MagnoliaTabSheetState getState() {
         return (MagnoliaTabSheetState) super.getState();
     }
 
     @Override
     protected MagnoliaTabSheetState getState(boolean markDirty) {
         return (MagnoliaTabSheetState) super.getState(markDirty);
     }
 
     public void showAllTab(boolean showAll, String label) {
         getState().showAllEnabled = showAll;
         getState().showAllLabel = label;
     }
 
     protected void closeTab(MagnoliaTab tab) {
         if (getState().activeTab == tab) {
             final MagnoliaTab nextTab = getNextTab(tab);
             if (nextTab != null && nextTab != tab) {
                 setActiveTab(nextTab);
             }
         }
         removeComponent(tab);
     }
 
     protected void doAddTab(final MagnoliaTab tab) {
         super.addComponent(tab);
         tabs.add(tab);
         if (getState().activeTab == null) {
             setActiveTab(tab);
         } else {
             updateTabContentVisibility();
         }
     }
 
     public MagnoliaTab getActiveTab() {
         return (MagnoliaTab) getState(false).activeTab;
     }
 
     public MagnoliaTab getNextTab(final MagnoliaTab tab) {
         return CollectionUtil.getNext(tabs, tab);
     }
 
     @Override
     public void removeComponent(final Component c) {
         if (c instanceof MagnoliaTab) {
             final MagnoliaTab tab = (MagnoliaTab) c;
             super.removeComponent(c);
             tabs.remove(tab);
             markAsDirty();
         }
     }
 
     public void setActiveTab(final MagnoliaTab tab) {
         getState().activeTab = tab;
         updateTabContentVisibility();
     }
 
     private void updateTabContentVisibility() {
         Iterator<Component> it = iterator();
         while (it.hasNext()) {
             MagnoliaTab tabIt = (MagnoliaTab) it.next();
             if (tabIt.getContent() != null) {
                 tabIt.getContent().setVisible(tabIt == getState().activeTab);
             }
         }
     }
 
     @Override
     public void replaceComponent(Component oldComponent, Component newComponent) {
     }
 
 
     @Override
     public int getComponentCount() {
         return tabs.size();
     }
 
     @Override
     public Iterator<Component> iterator() {
         return new ComponentIterator<MagnoliaTab>(tabs.iterator());
     }
 
     /**
      * Send a rpc call to the client, which will remove the tab related views and call back to the server.
      * @see #closeTab(MagnoliaTab)
      */
     public void closeTabFromServer(MagnoliaTab tab) {
         getRpcProxy(MagnoliaTabSheetClientRpc.class).closeTab(tab);
     }
 
     public void setLogo(String logo, String bgcolor) {
         getState().logo = logo;
         getState().logoBgColor = bgcolor;
     }
 
     public void setName(String name) {
         getState().name = name;
     }
 }