/**
    * This file Copyright (c) 2010-2014 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.editor;
  
  import info.magnolia.ui.vaadin.editor.CroppableImage.JCropReleaseEvent;
  import info.magnolia.ui.vaadin.editor.CroppableImage.JCropSelectionEvent;
  import info.magnolia.ui.vaadin.gwt.client.jcrop.JCropState;
  import info.magnolia.ui.vaadin.gwt.shared.jcrop.SelectionArea;
  
  import org.json.JSONArray;
  import org.json.JSONException;
  import org.json.JSONObject;
  
  import com.vaadin.annotations.JavaScript;
  import com.vaadin.server.AbstractJavaScriptExtension;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.Image;
  import com.vaadin.ui.JavaScriptFunction;
  
  /**
   * An {@link Image} extension that operates JCrop JQuery plugin ({@link http://deepliquid.com/content/Jcrop.html}).
   */
  @JavaScript({ "jquery.color.js", "jquery.Jcrop.min.js", "jcrop_connector.js" })
  public class JCrop extends AbstractJavaScriptExtension {
  
      @Override
      public CroppableImage getParent() {
          return (CroppableImage)super.getParent();
      }
  
      public JCrop(JCropHandler handler) {
          addFunction("doOnSelect", new JavaScriptFunction() {
              @Override
              public void call(JSONArray args) throws JSONException {
                  SelectionArea area = AreaFromJSON(args.getJSONObject(0));
                  getState(false).selection = area;
                  getParent().fireEvent(new JCropSelectionEvent(getParent(), area));
              }
          });
  
          addFunction("doOnRelease", new JavaScriptFunction() {
              @Override
              public void call(JSONArray args) throws JSONException {
                  getState().selection = null;
                  getParent().fireEvent(new JCropReleaseEvent(getParent()));
              }
          });
  
          addFunction("onCreated", new JavaScriptFunction() {
              @Override
              public void call(JSONArray args) throws JSONException {
                  getState(false).isValid = true;
              }
          });
      }
  
      protected SelectionArea AreaFromJSON(JSONObject json) {
          try {
              return new SelectionArea(json.getInt("x"), json.getInt("y"), json.getInt("w"), json.getInt("h"));
          } catch (JSONException e) {
              return new SelectionArea();
          }
      }
  
      @Override
      public void attach() {
          super.attach();
          getParent().addStyleName("croppable" + getConnectorId());
         if (getState().selectionStatusComponent != null) {
             ((Component)getState().selectionStatusComponent).addStyleName("crop-status" + getConnectorId());
         }
     }
 
     @Override
     protected JCropState getState(boolean markAsDirty) {
         return (JCropState)super.getState(markAsDirty);
     }
 
     @Override
     public JCropState getState() {
         return (JCropState) super.getState();
     }
 
     @Override
     protected Class<Image> getSupportedParentType() {
         return Image.class;
     }
 
     public void setAspectRatio(double aspectRatio) {
         getState().aspectRatio = aspectRatio;
     }
 
     public void animateTo(SelectionArea area) {
         callFunction("animateTo", new JSONObject(area));
     }
 
     public boolean isCropVisible() {
         return getState().isVisible;
     }
 
     public void setCropVisible(boolean isVisible) {
         getState().isVisible = isVisible;
     }
 
     public void enable() {
         callFunction("enable");
     }
 
     public void disable() {
         callFunction("disable");
     }
 
     public void setSelectionStatusComponent(Component c) {
         if (getState().selectionStatusComponent != null) {
             ((Component)getState().selectionStatusComponent).removeStyleName("");
         }
         getState().selectionStatusComponent = c;
         if (getSession() != null) {
             c.addStyleName("crop-status" + getConnectorId());
         }
     }
 
     public void setBackgroundColor(String color) {
         getState().backgroundColor = color;
     }
 
     public void setBackgroundOpacity(double opacity) {
         getState().backgroundOpacity = opacity;
     }
 
     public void setMinHeight(int height) {
         getState().minHeight = height;
     }
 
     public void setMaxHeight(int height) {
         getState().maxHeight = height;
     }
 
     public void setMaxWidth(int width) {
         getState().maxWidth = width;
     }
 
     public void setMinWidth(int width) {
         getState().minWidth = width;
     }
 
     public void setEnabled(boolean enabled) {
         getState().enabled = enabled;
     }
 
     public void invalidate() {
         getState().isValid = false;
     }
 
     public void setTrueHeight(int height) {
         getState().trueHeight = height;
     }
 
     public void setTrueWidth(int width) {
         getState().trueWidth = width;
     }
 
     public void select(SelectionArea area) {
         getState().selection = area;
     }
 }