/**
* 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;
import org.structr.common.SecurityContext;
import org.structr.common.error.FrameworkException;
import org.structr.core.GraphObject;
import org.structr.websocket.message.WebSocketMessage;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.message.MessageBuilder;
//~--- JDK imports ------------------------------------------------------------
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.lang3.StringUtils;
import org.structr.core.GraphObjectMap;
import org.structr.core.app.App;
import org.structr.core.app.StructrApp;
import org.structr.core.graph.Tx;
import org.structr.core.property.IntProperty;
import org.structr.core.property.Property;
import org.structr.core.property.StringProperty;
import org.structr.web.entity.dom.Content;
import org.structr.web.entity.dom.DOMElement;
import org.structr.web.entity.dom.DOMNode;
import org.structr.web.entity.dom.Page;
import org.structr.web.entity.dom.relationship.DOMChildren;
import org.structr.web.entity.html.Input;
import org.structr.web.entity.html.Link;
//~--- classes ----------------------------------------------------------------
/**
* Websocket command to retrieve DOM nodes which are not attached to a parent element
*
* @author Axel Morgner
*/
public class ListActiveElementsCommand extends AbstractCommand {
private static final Logger logger = Logger.getLogger(ListActiveElementsCommand.class.getName());
private static final Property<Integer> recursionDepthProperty = new IntProperty("recursionDepth");
private static final Property<String> parentIdProperty = new StringProperty("parentId");
private static final Property<String> stateProperty = new StringProperty("state");
private static final Property<String> actionProperty = new StringProperty("action");
private static final Property<String> queryProperty = new StringProperty("query");
static {
StructrWebSocket.addCommand(ListActiveElementsCommand.class);
}
public enum ActiveElementState {
None, Query, Content, Input, Button, Link
}
@Override
public void processMessage(WebSocketMessage webSocketData) {
final SecurityContext securityContext = getWebSocket().getSecurityContext();
final App app = StructrApp.getInstance(securityContext);
final String id = webSocketData.getId();
try (final Tx tx = app.tx()) {
final Page page = app.get(Page.class, id);
final List<GraphObject> result = new LinkedList<>();
if (page != null) {
collectActiveElements(result, page, Collections.EMPTY_SET, null, 0);
// set full result list
webSocketData.setResult(result);
webSocketData.setRawResultCount(result.size());
// send only over local connection
getWebSocket().send(webSocketData, true);
} else {
getWebSocket().send(MessageBuilder.status().code(404).message("Page with ID " + id + " not found.").build(), true);
}
} catch (FrameworkException fex) {
logger.log(Level.WARNING, "Exception occured", fex);
getWebSocket().send(MessageBuilder.status().code(fex.getStatus()).message(fex.getMessage()).build(), true);
}
}
@Override
public String getCommand() {
return "LIST_ACTIVE_ELEMENTS";
}
// ----- private methods -----
private void collectActiveElements(final List<GraphObject> resultList, final DOMNode root, final Set<String> parentDataKeys, final String parent, final int depth) {
final String childDataKey = root.getProperty(DOMElement.dataKey);
final Set<String> dataKeys = new LinkedHashSet<>(parentDataKeys);
String parentId = parent;
int dataCentricDepth = depth;
if (!StringUtils.isEmpty(childDataKey)) {
dataKeys.add(childDataKey);
dataCentricDepth++;
}
final ActiveElementState state = isActive(root, dataKeys);
if (!state.equals(ActiveElementState.None)) {
resultList.add(extractActiveElement(root, dataKeys, parentId, state, depth));
if (state.equals(ActiveElementState.Query)) {
parentId = root.getUuid();
}
}
for (final DOMChildren children : root.getChildRelationships()) {
final DOMNode child = children.getTargetNode();
collectActiveElements(resultList, child, dataKeys, parentId, dataCentricDepth);
}
}
private GraphObject extractActiveElement(final DOMNode node, final Set<String> dataKeys, final String parentId, final ActiveElementState state, final int depth) {
final GraphObjectMap activeElement = new GraphObjectMap();
activeElement.put(GraphObject.id, node.getUuid());
activeElement.put(GraphObject.type, node.getType());
activeElement.put(DOMElement.dataKey, StringUtils.join(dataKeys, ","));
activeElement.put(Content.content, node.getProperty(Content.content));
switch (state) {
case Button:
activeElement.put(actionProperty, node.getProperty(DOMElement._action));
break;
case Link:
activeElement.put(actionProperty, node.getProperty(Link._href));
break;
case Query:
extractQueries(activeElement, node);
break;
}
activeElement.put(stateProperty, state.name());
activeElement.put(recursionDepthProperty, depth);
activeElement.put(parentIdProperty, parentId);
return activeElement;
}
private ActiveElementState isActive(final DOMNode node, final Set<String> dataKeys) {
if (!StringUtils.isEmpty(node.getProperty(DOMElement.dataKey))) {
return ActiveElementState.Query;
}
if (!StringUtils.isEmpty(node.getProperty(DOMElement.restQuery))) {
return ActiveElementState.Query;
}
if (!StringUtils.isEmpty(node.getProperty(DOMElement.cypherQuery))) {
return ActiveElementState.Query;
}
if (!StringUtils.isEmpty(node.getProperty(DOMElement.xpathQuery))) {
return ActiveElementState.Query;
}
if (!StringUtils.isEmpty(node.getProperty(DOMElement.functionQuery))) {
return ActiveElementState.Query;
}
/*
attributes to check for !isEmpty:
- data-structr-action
- data-structr-attributes
- data-structr-raw-value
*/
if (node.getProperty(DOMElement._action) != null || node.getProperty(DOMElement._attributes) != null || node.getProperty(DOMElement._rawValue) != null) {
return ActiveElementState.Button;
}
if (node.getProperty(Content.content) != null && !dataKeys.isEmpty()) {
if (containsDataKeyReference(node.getProperty(Content.content), dataKeys)) {
return ActiveElementState.Content;
}
}
if (node.getProperty(DOMElement._id) != null && !dataKeys.isEmpty()) {
if (containsDataKeyReference(node.getProperty(DOMElement._id), dataKeys)) {
return ActiveElementState.Content;
}
}
if (node.getProperty(Link._href) != null && !dataKeys.isEmpty()) {
if (containsDataKeyReference(node.getProperty(Link._href), dataKeys)) {
return ActiveElementState.Link;
}
}
if (node.getProperty(Input._value) != null && !dataKeys.isEmpty()) {
if (containsDataKeyReference(node.getProperty(Input._value), dataKeys)) {
return ActiveElementState.Input;
}
}
// last option: just some hidden element..
if (!StringUtils.isEmpty(node.getProperty(DOMNode.hideConditions))) {
return ActiveElementState.Content;
}
if (!StringUtils.isEmpty(node.getProperty(DOMNode.showConditions))) {
return ActiveElementState.Content;
}
if (node.getProperty(DOMNode.hideOnIndex)) {
return ActiveElementState.Content;
}
if (node.getProperty(DOMNode.hideOnDetail)) {
return ActiveElementState.Content;
}
return ActiveElementState.None;
}
private boolean containsDataKeyReference(final String value, final Set<String> dataKeys) {
boolean contains = false;
for (final String dataKey : dataKeys) {
contains |= value.contains(dataKey);
}
return contains;
}
private void extractQueries(final GraphObjectMap activeElement, final DOMNode node) {
if (extractQuery(activeElement, node, DOMElement.restQuery)) {
return;
}
if (extractQuery(activeElement, node, DOMElement.cypherQuery)) {
return;
}
if (extractQuery(activeElement, node, DOMElement.xpathQuery)) {
return;
}
}
private boolean extractQuery(final GraphObjectMap activeElement, final DOMNode node, final Property<String> queryKey) {
if (!StringUtils.isEmpty(node.getProperty(queryKey))) {
activeElement.put(queryProperty, node.getProperty(queryKey));
return true;
}
return false;
}
}