// Copyright 2010 The Apache Software Foundation
//
// 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.apache.tapestry5.integration.linktrans.services;
import java.util.Locale;
import org.apache.tapestry5.EventContext;
import org.apache.tapestry5.Link;
import org.apache.tapestry5.internal.EmptyEventContext;
import org.apache.tapestry5.internal.services.ArrayEventContext;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.ioc.services.TypeCoercer;
import org.apache.tapestry5.services.ComponentEventRequestParameters;
import org.apache.tapestry5.services.LocalizationSetter;
import org.apache.tapestry5.services.PersistentLocale;
import org.apache.tapestry5.services.Request;
import org.apache.tapestry5.services.linktransform.ComponentEventLinkTransformer;
public class AppComponentEventLinkTransformer implements ComponentEventLinkTransformer
{
@Inject
private PersistentLocale persistentLocale;
@Inject
private TypeCoercer typeCoercer;
@Inject
private LocalizationSetter localizationSetter;
public ComponentEventRequestParameters decodeComponentEventRequest(Request request)
{
if (!request.getPath().equals("/event"))
return null;
String localeName = request.getParameter("x:locale");
String pageName = request.getParameter("x:page");
String container = request.getParameter("x:container");
String id = request.getParameter("x:id");
String pac = request.getParameter("x:pac");
String ec = request.getParameter("x:ec");
String type = request.getParameter("x:type");
if (localeName != null)
localizationSetter.setLocaleFromLocaleName(localeName);
return new ComponentEventRequestParameters(pageName, container == null ? pageName : container, id, type,
toContext(pac), toContext(ec));
}
private EventContext toContext(String value)
{
if (value == null)
return new EmptyEventContext();
return new ArrayEventContext(typeCoercer, (Object[]) value.split("/"));
}
public Link transformComponentEventLink(Link defaultLink, ComponentEventRequestParameters parameters)
{
Link link = defaultLink.copyWithBasePath("/event");
for (String name : defaultLink.getParameterNames())
{
link.removeParameter(name);
}
Locale locale = persistentLocale.get();
if (locale != null)
{
link.addParameter("x:locale", locale.toString());
}
link.addParameter("x:type", parameters.getEventType());
addEventContext(link, "x:ec", parameters.getEventContext());
addEventContext(link, "x:pac", parameters.getPageActivationContext());
link.addParameter("x:page", parameters.getActivePageName());
link.addParameter("x:id", parameters.getNestedComponentId());
if (!parameters.getActivePageName().equals(parameters.getContainingPageName()))
link.addParameter("x:container", parameters.getContainingPageName());
return link;
}
private void addEventContext(Link link, String parameterName, EventContext eventContext)
{
int count = eventContext.getCount();
if (count == 0)
return;
StringBuilder builder = new StringBuilder();
String sep = "";
for (int i = 0; i < count; i++)
{
builder.append(sep);
builder.append(eventContext.get(String.class, i));
sep = "/";
}
link.addParameter(parameterName, builder.toString());
}
}