/**
* Copyright (C) 2010-2017 Structr GmbH
*
* 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 Affero 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;
import java.util.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.structr.common.PagingHelper;
import org.structr.common.error.FrameworkException;
import org.structr.web.entity.dom.DOMNode;
import org.structr.web.entity.dom.Page;
import org.structr.web.entity.dom.ShadowDocument;
import org.structr.web.entity.dom.relationship.DOMChildren;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.message.MessageBuilder;
import org.structr.websocket.message.WebSocketMessage;
//~--- classes ----------------------------------------------------------------
/**
* Websocket command to retrieve nodes which are in use on more than
* one page.
*
*
*/
public class ListComponentsCommand extends AbstractCommand {
private static final Logger logger = LoggerFactory.getLogger(ListComponentsCommand.class.getName());
static {
StructrWebSocket.addCommand(ListComponentsCommand.class);
}
@Override
public void processMessage(final WebSocketMessage webSocketData) {
final int pageSize = webSocketData.getPageSize();
final int page = webSocketData.getPage();
try {
final ShadowDocument hiddenDoc = CreateComponentCommand.getOrCreateHiddenDocument();
List<DOMNode> filteredResults = new LinkedList();
List<DOMNode> resultList = hiddenDoc.getProperty(Page.elements);
// Filter list and return only top level nodes
for (DOMNode node : resultList) {
if (Boolean.FALSE.equals(node.hasIncomingRelationships(DOMChildren.class))) {
filteredResults.add(node);
}
}
// Sort the components by name
Collections.sort(filteredResults, new Comparator<DOMNode>() {
@Override
public int compare(DOMNode node1, DOMNode node2) {
final String nameNode1 = node1.getProperty(DOMNode.name);
final String nameNode2 = node2.getProperty(DOMNode.name);
if (nameNode1 != null && nameNode2 != null) {
return nameNode1.compareTo(nameNode2);
} else if (nameNode1 == null && nameNode2 == null) {
return 0;
} else if (nameNode1 == null) {
return -1;
} else {
return 1;
}
}
});
// save raw result count
int resultCountBeforePaging = filteredResults.size();
// set full result list
webSocketData.setResult(PagingHelper.subList(filteredResults, pageSize, page, null));
webSocketData.setRawResultCount(resultCountBeforePaging);
// send only over local connection
getWebSocket().send(webSocketData, true);
} catch (FrameworkException fex) {
logger.warn("Exception occured", fex);
getWebSocket().send(MessageBuilder.status().code(fex.getStatus()).message(fex.getMessage()).build(), true);
}
}
//~--- get methods ----------------------------------------------------
@Override
public String getCommand() {
return "LIST_COMPONENTS";
}
}