/*
* Copyright 2009-2014 PrimeTek.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.primefaces.context;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.faces.component.NamingContainer;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialResponseWriter;
import javax.faces.event.AbortProcessingException;
import org.primefaces.json.JSONArray;
import org.primefaces.json.JSONException;
import org.primefaces.json.JSONObject;
public class PrimePartialResponseWriter extends PartialResponseWriter {
private static final Map<String, String> CALLBACK_EXTENSION_PARAMS = Collections.unmodifiableMap(new HashMap<String, String>() {{
put("ln", "primefaces");
put("type", "args");
}});
private PartialResponseWriter wrapped;
public PrimePartialResponseWriter(PartialResponseWriter writer) {
super(writer);
wrapped = (PartialResponseWriter) writer;
}
private void encodeCallbackParams(RequestContext requestContext) throws IOException, JSONException {
FacesContext context = FacesContext.getCurrentInstance();
boolean validationFailed = context.isValidationFailed();
if (validationFailed) {
requestContext.addCallbackParam("validationFailed", true);
}
if (requestContext.getApplicationContext().getConfig().isParameterNamespacingEnabled() && context.getViewRoot() instanceof NamingContainer) {
requestContext.addCallbackParam("parameterNamespace", context.getViewRoot().getContainerClientId(context));
}
Map<String, Object> params = requestContext.getCallbackParams();
if (!params.isEmpty()) {
startExtension(CALLBACK_EXTENSION_PARAMS);
write("{");
for(Iterator<String> it = params.keySet().iterator(); it.hasNext();) {
String paramName = it.next();
Object paramValue = params.get(paramName);
if (paramValue instanceof JSONObject) {
String json = ((JSONObject) paramValue).toString();
write("\"");
write(paramName);
write("\":{");
write(json.substring(1, json.length() - 1));
write("}");
}
else if (paramValue instanceof JSONArray) {
String json = ((JSONArray) paramValue).toString();
write("\"");
write(paramName);
write("\":[");
write(json.substring(1, json.length() - 1));
write("]");
}
else if (isBean(paramValue)) {
write("\"");
write(paramName);
write("\":");
write(new JSONObject(paramValue).toString());
}
else {
String json = new JSONObject().put(paramName, paramValue).toString();
write(json.substring(1, json.length() - 1));
}
if (it.hasNext()) {
write(",");
}
}
write("}");
endExtension();
}
}
private void encodeScripts(RequestContext requestContext) throws IOException {
List<String> scripts = requestContext.getScriptsToExecute();
if (!scripts.isEmpty()) {
startEval();
for (int i = 0; i < scripts.size(); i++) {
write(scripts.get(i));
write(';');
}
endEval();
}
}
@Override
public void delete(String targetId) throws IOException {
wrapped.delete(targetId);
}
@Override
public void endError() throws IOException {
wrapped.endError();
}
@Override
public void endEval() throws IOException {
wrapped.endEval();
}
@Override
public void endExtension() throws IOException {
wrapped.endExtension();
}
@Override
public void endInsert() throws IOException {
wrapped.endInsert();
}
@Override
public void endUpdate() throws IOException {
wrapped.endUpdate();
}
@Override
public void redirect(String url) throws IOException {
wrapped.redirect(url);
}
@Override
public void startDocument() throws IOException {
wrapped.startDocument();
RequestContext requestContext = RequestContext.getCurrentInstance();
if (requestContext != null) {
try {
encodeCallbackParams(requestContext);
}
catch (Exception exception) {
throw new AbortProcessingException(exception);
}
}
}
@Override
public void endDocument() throws IOException {
RequestContext requestContext = RequestContext.getCurrentInstance();
if (requestContext != null) {
try {
encodeScripts(requestContext);
}
catch (Exception exception) {
throw new AbortProcessingException(exception);
}
}
wrapped.endDocument();
}
@Override
public void startError(String errorName) throws IOException {
wrapped.startError(errorName);
}
@Override
public void startEval() throws IOException {
wrapped.startEval();
}
@Override
public void startExtension(Map<String, String> attributes) throws IOException {
wrapped.startExtension(attributes);
}
@Override
public void startInsertAfter(String targetId) throws IOException {
wrapped.startInsertAfter(targetId);
}
@Override
public void startInsertBefore(String targetId) throws IOException {
wrapped.startInsertBefore(targetId);
}
@Override
public void startUpdate(String targetId) throws IOException {
wrapped.startUpdate(targetId);
}
@Override
public void updateAttributes(String targetId, Map<String, String> attributes) throws IOException {
wrapped.updateAttributes(targetId, attributes);
}
private boolean isBean(Object value) {
if (value == null) {
return false;
}
if (value instanceof Boolean || value instanceof String || value instanceof Number) {
return false;
}
return true;
}
}