/**
    * This file Copyright (c) 2014-2017 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.pages.app.editor.pagebar.platformselector;
  
  import info.magnolia.event.EventBus;
  import info.magnolia.pages.app.editor.PageEditorPresenter;
  import info.magnolia.pages.app.editor.extension.AbstractExtension;
  import info.magnolia.ui.api.app.SubAppEventBus;
  import info.magnolia.ui.api.view.View;
  import info.magnolia.ui.contentapp.detail.DetailLocation;
  import info.magnolia.ui.contentapp.detail.DetailView;
  import info.magnolia.ui.vaadin.editor.gwt.shared.PlatformType;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  /**
   * Selector for the {@link PlatformType}. Notifies the {@link PageEditorPresenter} about changes.
   */
  public class PlatformSelector extends AbstractExtension implements PlatformSelectorView.Listener {
  
      private final EventBus eventBus;
      private PlatformSelectorView view;
      private PageEditorPresenter pageEditorPresenter;
  
  
      @Inject
      public PlatformSelector(PlatformSelectorView view, PageEditorPresenter pageEditorPresenter, @Named(SubAppEventBus.NAME) EventBus eventBus) {
          this.view = view;
          this.pageEditorPresenter = pageEditorPresenter;
          this.eventBus = eventBus;
      }
  
      @Override
      public View start(DetailLocation location) {
          view.setListener(this);
          updatePlatformSelector(location);
  
          return view;
      }
  
      private void updatePlatformSelector(DetailLocation location) {
           boolean isPreview = DetailView.ViewType.VIEW.equals(location.getViewType());
          if (!isPreview) {
              resetCurrentPlatform();
          }
          setVisible(isPreview);
      }
  
      @Override
      public void platformSelected(PlatformType platformType) {
          PlatformType currentPlatFormType = pageEditorPresenter.getStatus().getPlatformType();
          if (platformType != null && !platformType.equals(currentPlatFormType)) {
              pageEditorPresenter.getStatus().setPlatformType(platformType);
              pageEditorPresenter.loadPageEditor();
              eventBus.fireEvent(new PlatformChangedEvent(platformType));
          }
      }
  
      public void setVisible(boolean visible) {
          view.setVisible(visible);
      }
  
      @Override
      public void onLocationUpdate(DetailLocation location) {
          updatePlatformSelector(location);
      }
  
     private void resetCurrentPlatform() {
         pageEditorPresenter.getStatus().setPlatformType(PlatformType.DESKTOP);
         view.setPlatformType(PlatformType.DESKTOP);
     }
 
     @Override
     public void deactivate() {
         view.setVisible(false);
     }
 }