/*
* 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.util;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.UUID;
import javax.el.ValueExpression;
import javax.faces.application.Resource;
import javax.faces.component.UIComponent;
import javax.faces.component.UIParameter;
import javax.faces.context.FacesContext;
import org.primefaces.context.RequestContext;
import org.primefaces.el.ValueExpressionAnalyzer;
import org.primefaces.model.StreamedContent;
public class DynamicResourceBuilder {
private static final String SB_BUILD = DynamicResourceBuilder.class.getName() + "#build";
public static String build(FacesContext context, Object value, UIComponent component, boolean cache, String type) throws UnsupportedEncodingException {
String src = null;
if (value == null) {
return "";
}
else if (value instanceof String) {
src = ComponentUtils.getResourceURL(context, (String) value);
}
else if (value instanceof StreamedContent) {
StreamedContent streamedContent = (StreamedContent) value;
Resource resource = context.getApplication().getResourceHandler().createResource("dynamiccontent.properties", "primefaces", streamedContent.getContentType());
String resourcePath = resource.getRequestPath();
StringEncrypter encrypter = RequestContext.getCurrentInstance().getEncrypter();
ValueExpression expression = ValueExpressionAnalyzer.getExpression(context.getELContext(), component.getValueExpression("value"));
String rid = encrypter.encrypt(expression.getExpressionString());
StringBuilder builder = SharedStringBuilder.get(context, SB_BUILD);
builder.append(resourcePath).append("&").append(Constants.DYNAMIC_CONTENT_PARAM).append("=").append(URLEncoder.encode(rid,"UTF-8"))
.append("&").append(Constants.DYNAMIC_CONTENT_TYPE_PARAM).append("=").append(type);
for (UIComponent kid : component.getChildren()) {
if (kid instanceof UIParameter) {
UIParameter param = (UIParameter) kid;
if (!param.isDisable()) {
Object paramValue = param.getValue();
builder.append("&").append(param.getName()).append("=");
if (paramValue != null) {
builder.append(URLEncoder.encode(paramValue.toString(), "UTF-8"));
}
}
}
}
src = builder.toString();
}
if (src != null) {
src += src.contains("?") ? "&" : "?";
src += Constants.DYNAMIC_CONTENT_CACHE_PARAM + "=" + cache;
if (!cache) {
src += "&uid=" + UUID.randomUUID().toString();
}
}
return context.getExternalContext().encodeResourceURL(src);
}
}