/**
    * This file Copyright (c) 2013-2018 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.mediaeditor.field.image;
  
  
  import java.awt.image.BufferedImage;
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.lang.reflect.Method;
  
  import javax.imageio.ImageIO;
  
  import com.vaadin.ui.Component;
  import com.vaadin.ui.Image;
  import com.vaadin.util.ReflectTools;
  
  /**
   * Provides the functionality for simple image view.
   */
  public class ViewImageField extends ImageMediaField {
  
      private Image image = new Image();
  
      private BufferedImage bufferedImage;
  
      @Override
      public void refreshImageSource() {
          try {
              bufferedImage = ImageIO.read(new ByteArrayInputStream(getValue()));
              fireEvent(new ImageResizeEvent(this, bufferedImage.getWidth(), bufferedImage.getHeight()));
              image.setSource(createResourceFromValue());
          } catch (IOException e) {
              log.error("Error reading the image data: " + e.getMessage(), e);
          }
      }
  
      public void addImageResizeListener(ImageSizeChangeListener listener) {
          addListener(ImageSizeChangeListener.EVENT_ID, ImageResizeEvent.class, listener, ImageSizeChangeListener.EVENT_METHOD);
      }
  
      public void removeImageResizeListener(ImageSizeChangeListener listener) {
          removeListener(ImageSizeChangeListener.EVENT_ID, ImageResizeEvent.class, listener);
      }
  
      @Override
      protected Component createImage() {
          return image;
      }
  
      @Override
      public void attach() {
          super.attach();
      }
  
      /**
       * ImageResizeEvent.
       */
      public static class ImageResizeEvent extends Component.Event {
  
          private int width;
  
          private int height;
  
          public ImageResizeEvent(Component source, int newWidth, int newHeight) {
              super(source);
              this.width = newWidth;
              this.height = newHeight;
          }
 
         public int getWidth() {
             return width;
         }
 
         public int getHeight() {
             return height;
         }
     }
 
 
     /**
      * ImageSizeChangeListener.
      */
     public interface ImageSizeChangeListener {
         public static String EVENT_ID = "image_resize";
         public static Method EVENT_METHOD =
                 ReflectTools.findMethod(ImageSizeChangeListener.class, "onSizeChanged", ImageResizeEvent.class);
         void onSizeChanged(ImageResizeEvent e);
     }
 }