Package org.structr.websocket.command.dom

Source Code of org.structr.websocket.command.dom.CreateAndAppendDOMNodeCommand

/**
* Copyright (C) 2010-2014 Morgner UG (haftungsbeschränkt)
*
* This file is part of Structr <http://structr.org>.
*
* Structr 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.
*
* Structr 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 General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Structr.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.websocket.command.dom;

import java.util.Map;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.lang3.StringUtils;
import org.structr.common.SecurityContext;
import org.structr.common.error.FrameworkException;
import org.structr.core.app.StructrApp;
import org.structr.core.converter.PropertyConverter;
import org.structr.core.graph.NodeInterface;
import org.structr.core.property.PropertyKey;
import org.structr.web.entity.dom.DOMNode;
import org.structr.web.entity.dom.Template;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.command.AbstractCommand;
import org.structr.websocket.message.MessageBuilder;
import org.structr.websocket.message.WebSocketMessage;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;

/**
*
* @author Christian Morgner
* @author Axel Morgner
*/
public class CreateAndAppendDOMNodeCommand extends AbstractCommand {

  private static final Logger logger = Logger.getLogger(CreateAndAppendDOMNodeCommand.class.getName());

  static {
   
    StructrWebSocket.addCommand(CreateAndAppendDOMNodeCommand.class);
  }
 
  @Override
  public void processMessage(WebSocketMessage webSocketData) {

    final Map<String, Object> nodeData = webSocketData.getNodeData();
    final String parentId              = (String) nodeData.get("parentId");
    final String childContent          = (String) nodeData.get("childContent");
    final String pageId                = webSocketData.getPageId();
   
    nodeData.remove("parentId");

    if (pageId != null) {

      // check for parent ID before creating any nodes
      if (parentId == null) {
   
        getWebSocket().send(MessageBuilder.status().code(422).message("Cannot add node without parentId").build(), true);   
        return;
      }

      // check if parent node with given ID exists
      final DOMNode parentNode = getDOMNode(parentId);
      if (parentNode == null) {
   
        getWebSocket().send(MessageBuilder.status().code(404).message("Parent node not found").build(), true);   
        return;
      }
     
      final Document document = getPage(pageId);
      if (document != null) {

        final String tagName = (String) nodeData.get("tagName");
       
        nodeData.remove("tagName");
       
        try {

          DOMNode newNode;

          if (tagName != null && "comment".equals(tagName)) {
           
            newNode = (DOMNode) document.createComment("#comment");
           
          } else if (tagName != null && "template".equals(tagName)) {
           
            newNode = (DOMNode) document.createTextNode("#template");
 
            try {
           
              newNode.setProperty(NodeInterface.type, Template.class.getSimpleName());
           
            } catch (FrameworkException fex) {

              logger.log(Level.WARNING, "Unable to set type of node {1} to Template: {3}", new Object[] { newNode.getUuid(), fex.getMessage() } );

            }
           
          } else if (tagName != null && !tagName.isEmpty()) {

            newNode = (DOMNode) document.createElement(tagName);

          } else {

            newNode = (DOMNode) document.createTextNode("#text");
          }

          // Instantiate node again to get correct class
          newNode = getDOMNode(newNode.getUuid());
         
          // append new node to parent
          if (newNode != null) {

            parentNode.appendChild(newNode);

            for (Entry entry : nodeData.entrySet()) {

              String key = (String) entry.getKey();
              Object val = entry.getValue();

              PropertyKey propertyKey = StructrApp.getConfiguration().getPropertyKeyForDatabaseName(newNode.getClass(), key);
              if (propertyKey != null) {

                try {
                  Object convertedValue = val;

                  PropertyConverter inputConverter = propertyKey.inputConverter(SecurityContext.getSuperUserInstance());
                  if (inputConverter != null) {

                    convertedValue = inputConverter.convert(val);
                  }

                  //newNode.unlockReadOnlyPropertiesOnce();
                  newNode.setProperty(propertyKey, convertedValue);

                } catch (FrameworkException fex) {

                  logger.log(Level.WARNING, "Unable to set node property {0} of node {1} to {2}: {3}", new Object[] { propertyKey, newNode.getUuid(), val, fex.getMessage() } );

                }
              }

            }

            // create a child text node if content is given
            if (StringUtils.isNotBlank(childContent)) {

              DOMNode childNode = (DOMNode)document.createTextNode(childContent);

              newNode.appendChild(childNode);

            }

          }
         
        } catch (DOMException dex) {
           
          // send DOM exception
          getWebSocket().send(MessageBuilder.status().code(422).message(dex.getMessage()).build(), true);   
         
        }
       
      } else {
   
        getWebSocket().send(MessageBuilder.status().code(404).message("Page not found").build(), true);   
      }
     
    } else {
   
      getWebSocket().send(MessageBuilder.status().code(422).message("Cannot create node without pageId").build(), true);   
    }
  }

  @Override
  public String getCommand() {
    return "CREATE_AND_APPEND_DOM_NODE";
  }

}
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