/*
 * NativeKeyDownEvent.java
 *
 * Copyright (C) 2022 by Posit Software, PBC
 *
 * Unless you have received this program directly from Posit Software pursuant
 * to the terms of a commercial license agreement with Posit Software, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.core.client.events;

import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.shared.EventHandler;
import com.google.gwt.event.shared.GwtEvent;
import com.google.gwt.event.shared.HasHandlers;

public class NativeKeyDownEvent extends GwtEvent<NativeKeyDownEvent.Handler>
{
   public static final GwtEvent.Type<Handler> TYPE = new GwtEvent.Type<>();

   public NativeKeyDownEvent(NativeEvent event)
   {
      event_ = event;
   }

   public NativeEvent getEvent()
   {
      return event_;
   }

   public boolean isCanceled()
   {
      return handled_;
   }

   public void cancel()
   {
      handled_ = true;
   }

   public static boolean fire(NativeEvent event, HasHandlers target)
   {
      NativeKeyDownEvent evt = new NativeKeyDownEvent(event);
      target.fireEvent(evt);
      if (evt.isCanceled())
      {
         event.preventDefault();
         return true;
      }
      return false;
   }

   @Override
   public Type<Handler> getAssociatedType()
   {
      return TYPE;
   }

   @Override
   protected void dispatch(Handler handler)
   {
      handler.onKeyDown(this);
   }

   public interface Handler extends EventHandler
   {
      void onKeyDown(NativeKeyDownEvent event);
   }

   private final NativeEvent event_;
   private boolean handled_;
}
