/**
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.toolbar.webui.component;
import java.util.Collection;
import java.util.Collections;
import javax.portlet.MimeResponse;
import javax.portlet.PortletPreferences;
import javax.portlet.PortletRequest;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceURL;
import org.exoplatform.portal.application.PortalRequestContext;
import org.exoplatform.portal.mop.SiteKey;
import org.exoplatform.portal.mop.navigation.GenericScope;
import org.exoplatform.portal.mop.navigation.NodeChange;
import org.exoplatform.portal.mop.navigation.NodeChangeQueue;
import org.exoplatform.portal.mop.navigation.Scope;
import org.exoplatform.portal.mop.user.UserNavigation;
import org.exoplatform.portal.mop.user.UserNode;
import org.exoplatform.portal.mop.user.UserNodeFilterConfig;
import org.exoplatform.portal.mop.user.UserPortal;
import org.exoplatform.portal.webui.util.Util;
import org.exoplatform.web.url.navigation.NavigationResource;
import org.exoplatform.web.url.navigation.NodeURL;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.webui.application.portlet.PortletRequestContext;
import org.exoplatform.webui.core.UIPortletApplication;
import org.json.JSONArray;
import org.json.JSONObject;
/**
* @author <a href="mailto:phuong.vu@exoplatform.com">Vu Viet Phuong</a>
* @version $Id$
*
*/
public abstract class BasePartialUpdateToolbar extends UIPortletApplication {
protected UserNodeFilterConfig toolbarFilterConfig;
protected Scope toolbarScope;
protected static final int DEFAULT_LEVEL = 2;
public BasePartialUpdateToolbar() throws Exception {
int level = DEFAULT_LEVEL;
try {
PortletRequestContext context = (PortletRequestContext) WebuiRequestContext.getCurrentInstance();
PortletRequest prequest = context.getRequest();
PortletPreferences prefers = prequest.getPreferences();
level = Integer.valueOf(prefers.getValue("level", String.valueOf(DEFAULT_LEVEL)));
} catch (Exception ex) {
log.warn("Preference for navigation level can only be integer");
}
if (level <= 0) {
toolbarScope = Scope.ALL;
} else {
toolbarScope = GenericScope.treeShape(level);
}
}
protected Collection<UserNode> getNavigationNodes(UserNavigation nav) {
UserPortal userPortal = getUserPortal();
if (nav != null) {
try {
UserNode rootNodes = userPortal.getNode(nav, toolbarScope, toolbarFilterConfig, null);
return rootNodes.getChildren();
} catch (Exception ex) {
log.warn(nav.getKey().getName() + " has been deleted");
}
}
return Collections.emptyList();
}
protected UserNavigation getNavigation(SiteKey key) {
UserPortal userPortal = getUserPortal();
return userPortal.getNavigation(key);
}
@Override
public void serveResource(WebuiRequestContext context) throws Exception {
super.serveResource(context);
ResourceRequest req = context.getRequest();
String id = req.getResourceID();
JSONArray jsChilds = getChildrenAsJSON(getNodeFromResourceID(id));
if (jsChilds == null) {
return;
}
MimeResponse res = context.getResponse();
res.setContentType("text/json");
res.getWriter().write(jsChilds.toString());
}
private JSONArray getChildrenAsJSON(UserNode userNode) throws Exception {
if (userNode == null) {
return null;
}
NodeChangeQueue<UserNode> queue = new NodeChangeQueue<UserNode>();
getUserPortal().updateNode(userNode, toolbarScope, queue);
for (NodeChange<UserNode> change : queue) {
if (change instanceof NodeChange.Removed) {
UserNode deletedNode = ((NodeChange.Removed<UserNode>) change).getTarget();
if (hasRelationship(deletedNode, userNode)) {
return null;
}
}
}
Collection<UserNode> childs = userNode.getChildren();
JSONArray jsChilds = new JSONArray();
WebuiRequestContext context = WebuiRequestContext.getCurrentInstance();
MimeResponse res = context.getResponse();
for (UserNode child : childs) {
jsChilds.put(toJSON(child, userNode.getNavigation().getKey().getName(), res));
}
return jsChilds;
}
protected JSONObject toJSON(UserNode node, String navId, MimeResponse res) throws Exception {
JSONObject json = new JSONObject();
String nodeId = node.getId();
json.put("label", node.getEncodedResolvedLabel());
json.put("hasChild", node.getChildrenCount() > 0);
json.put("isSelected", nodeId.equals(getSelectedNode().getId()));
json.put("icon", node.getIcon());
ResourceURL rsURL = res.createResourceURL();
rsURL.setResourceID(getResourceIdFromNode(node, navId));
json.put("getNodeURL", rsURL.toString());
if (node.getPageRef() != null) {
NavigationResource resource = new NavigationResource(node);
NodeURL url = Util.getPortalRequestContext().createURL(NodeURL.TYPE, resource);
json.put("actionLink", url.setAjax(false).toString());
}
JSONArray childs = new JSONArray();
for (UserNode child : node.getChildren()) {
childs.put(toJSON(child, navId, res));
}
json.put("childs", childs);
return json;
}
protected UserPortal getUserPortal() {
PortalRequestContext prc = Util.getPortalRequestContext();
return prc.getUserPortalConfig().getUserPortal();
}
protected UserNode getSelectedNode() throws Exception {
return Util.getUIPortal().getSelectedUserNode();
}
private boolean hasRelationship(UserNode parent, UserNode userNode) {
if (parent.getId().equals(userNode.getId())) {
return true;
}
for (UserNode child : parent.getChildren()) {
if (hasRelationship(child, userNode)) {
return true;
}
}
return false;
}
protected abstract String getResourceIdFromNode(UserNode node, String navId);
protected abstract UserNode getNodeFromResourceID(String resourceId) throws Exception;
}