/**
    * This file Copyright (c) 2011-2014 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.templating.editor.client.widget.placeholder;
  
  import java.util.Map;
  
  import info.magnolia.rendering.template.AreaDefinition;
  import info.magnolia.templating.editor.client.PageEditor;
  import info.magnolia.templating.editor.client.dom.MgnlElement;
  
  
  import com.google.gwt.dom.client.Element;
  import com.google.gwt.user.client.ui.Label;
  
  /**
   * Widget for area placeholders.
   */
  public class AreaPlaceHolder extends AbstractPlaceHolder {
  
      private Label areaName;
  
      public AreaPlaceHolder(MgnlElement mgnlElement) throws IllegalArgumentException {
  
          super(mgnlElement);
  
          checkMandatories(mgnlElement.getAttributes());
  
          this.addStyleName("area");
          String label = mgnlElement.getAttribute("label");
          areaName = new Label(label + " Placeholder");
          areaName.setStyleName("label");
  
          if (mgnlElement.getRootArea() != mgnlElement) {
              setVisible(false);
          }
          add(areaName);
  
          attach();
  
      }
  
      public void attach() {
          Element parent = getMgnlElement().getAreaElement();
          if (parent == null) {
              parent = PageEditor.model.getEditBar(getMgnlElement()).getElement().getParentElement();
              parent.insertAfter(getElement(), PageEditor.model.getEditBar(getMgnlElement()).getElement());
          }
          else {
              parent.insertFirst(getElement());
          }
  
          onAttach();
          PageEditor.model.addAreaPlaceHolder(getMgnlElement(), this);
      }
  
      public void setActive(boolean active) {
          setStyleName("active", active);
          areaName.setVisible(!active);
      }
  
      private void checkMandatories(Map<String, String> attributes) throws IllegalArgumentException {
  
          boolean noComponent = attributes.get("type").equals(AreaDefinition.TYPE_NO_COMPONENT);
  
          if (!getMgnlElement().getComponents().isEmpty() || noComponent) {
              throw new IllegalArgumentException();
          }
      }
 
 }