/*
 *
 * Copyright (C) 2007-2015 Licensed to the Comunes Association (CA) under
 * one or more contributor license agreements (see COPYRIGHT for details).
 * The CA licenses this file to you under the GNU Affero General Public
 * License version 3, (the "License"); you may not use this file except in
 * compliance with the License. This file is part of kune.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package cc.kune.gspace.client.viewers;

import org.waveprotocol.box.webclient.search.DragableImageParticipant;
import org.waveprotocol.box.webclient.search.DragableInitialParticipant;
import org.waveprotocol.box.webclient.search.DragableParticipant;

import cc.kune.core.client.dnd.AbstractDropController;
import cc.kune.core.client.dnd.KuneDragController;
import cc.kune.core.client.rpcservices.AsyncCallbackSimple;
import cc.kune.core.client.rpcservices.ContentServiceAsync;
import cc.kune.core.client.state.Session;
import cc.kune.core.client.ui.BasicDragableThumb;
import cc.kune.core.shared.domain.utils.StateToken;

import com.allen_sauer.gwt.dnd.client.drop.SimpleDropController;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;
import com.google.inject.Singleton;

// TODO: Auto-generated Javadoc
/**
 * The Class ContentDropController is used to allow the drop of users as
 * participants to waves.
 *
 * @author vjrj@ourproject.org (Vicente J. Ruiz Jurado)
 */
@Singleton
public class ContentDropController extends AbstractDropController {

  /** The content service. */
  private final ContentServiceAsync contentService;

  /** The session. */
  private final Session session;

  /**
   * Instantiates a new content drop controller.
   *
   * @param dragController
   *          the drag controller
   * @param contentService
   *          the content service
   * @param session
   *          the session
   */
  @Inject
  public ContentDropController(final KuneDragController dragController,
      final ContentServiceAsync contentService, final Session session) {
    super(dragController);
    this.contentService = contentService;
    this.session = session;
    registerType(BasicDragableThumb.class);
    registerType(DragableImageParticipant.class);
    registerType(DragableInitialParticipant.class);
  }

  private void addParticipant(final String participant) {
    contentService.addParticipant(session.getUserHash(), (StateToken) getTarget(), participant,
        new AsyncCallbackSimple<Boolean>() {
      @Override
      public void onSuccess(final Boolean result) {
        // This sometimes is very redundant as we see the participant added
        // NotifyUser.info(I18n.t("Participant added"));
      }
    });
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * cc.kune.core.client.dnd.AbstractDropController#onDropAllowed(com.google
   * .gwt.user.client.ui.Widget,
   * com.allen_sauer.gwt.dnd.client.drop.SimpleDropController)
   */
  @Override
  public void onDropAllowed(final Widget widget, final SimpleDropController dropController) {
    if (widget instanceof BasicDragableThumb) {
      final BasicDragableThumb thumb = (BasicDragableThumb) widget;
      final String participant = thumb.getToken().getGroup();
      addParticipant(participant);
    } else if (widget instanceof DragableParticipant) {
      final DragableParticipant participant = (DragableParticipant) widget;
      addParticipant(participant.getAddress());
    }
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * cc.kune.core.client.dnd.AbstractDropController#onGroupDropFinished(com.
   * allen_sauer.gwt.dnd.client.drop.SimpleDropController)
   */
  @Override
  public void onGroupDropFinished(final SimpleDropController dropController) {
  }

}