/**
    * This file Copyright (c) 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.admincentral.apps.messages.view;
  
  import info.magnolia.context.MgnlContext;
  import info.magnolia.ui.api.app.SubAppContext;
  import info.magnolia.ui.api.message.Message;
  import info.magnolia.ui.contentapp.browser.ContentViews;
  import info.magnolia.ui.contentapp.browser.Workbench;
  import info.magnolia.ui.framework.message.MessagesManager;
  
  import javax.inject.Inject;
  
  import com.vaadin.shared.ui.ContentMode;
  import com.vaadin.ui.Button;
  import com.vaadin.ui.Label;
  
  /**
   * Message content app views.
   */
  public class MessageContentViews extends ContentViews {
  
      private final MessagesManager messagesManager;
      private final SubAppContext subAppContext;
      private MessagesManager.MessageListener messageListener;
      private final String userName;
  
      @Inject
      public MessageContentViews(Workbench.WorkbenchContext workbenchContext, SubAppContext subAppContext, MessageContentViewsDefinition messageContentViewsDef,
                                 MessagesManager messagesManager) {
          super(workbenchContext, messageContentViewsDef);
          this.messagesManager = messagesManager;
          this.subAppContext = subAppContext;
          this.userName = MgnlContext.getUser().getName();
          layoutMessageUI();
      }
  
      @Override
      protected Button createContentViewIcon(String viewType, String icon) {
          final Button contentViewIcon = super.createContentViewIcon(viewType, icon);
          contentViewIcon.setVisible(((MessageContentViewsDefinition) getDefinition()).showToggleViewsButton());
          return contentViewIcon;
      }
  
      @Override
      public void destroy() {
          messagesManager.unregisterMessagesListener(userName, messageListener);
      }
  
      private void updateMessageAppHeaderLabel(Label headerLabel) {
          ContentMode htmlContent = subAppContext.getAppContext().getAppDescriptor().isHtmlCaption() ? ContentMode.HTML : ContentMode.TEXT;
          headerLabel.setContentMode(htmlContent);
          headerLabel.setValue(subAppContext.getSubApp().getCaption());
      }
  
      protected void layoutMessageUI() {
          final Label headerLabel = new Label();
          headerLabel.addStyleName("heading-1 tab-header");
          updateMessageAppHeaderLabel(headerLabel);
          getToolBar().addComponent(headerLabel, 0);
          getToolBar().setExpandRatio(headerLabel, 0);
          messageListener = new MessagesManager.MessageListener() {
              @Override
              public void messageSent(Message message) {
                  updateMessageAppHeaderLabel(headerLabel);
              }
  
              @Override
             public void messageCleared(Message message) {
                 updateMessageAppHeaderLabel(headerLabel);
             }
 
             @Override
             public void messageRemoved(String id) {
                 updateMessageAppHeaderLabel(headerLabel);
             }
         };
         messagesManager.registerMessagesListener(userName, messageListener);
     }
 }