/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.wicket.core.request.mapper;
import java.util.List;
import org.apache.wicket.Application;
import org.apache.wicket.request.IRequestMapper;
import org.apache.wicket.request.Request;
import org.apache.wicket.request.Url;
import org.apache.wicket.request.component.IRequestablePage;
import org.apache.wicket.request.mapper.ICompoundRequestMapper;
import org.apache.wicket.request.mapper.IRequestMapperDelegate;
import org.apache.wicket.request.mapper.info.PageComponentInfo;
import org.apache.wicket.request.mapper.parameter.IPageParametersEncoder;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.request.mapper.parameter.PageParametersEncoder;
import org.apache.wicket.util.string.Strings;
/**
* Decodes and encodes the following URLs:
*
* <pre>
* Page Class - Render (BookmarkablePageRequestHandler)
* /wicket/bookmarkable/org.apache.wicket.MyPage
* (will redirect to hybrid alternative if page is not stateless)
*
* Page Instance - Render Hybrid (RenderPageRequestHandler for pages that were created using bookmarkable URLs)
* /wicket/bookmarkable/org.apache.wicket.MyPage?2
*
* Page Instance - Bookmarkable Listener (BookmarkableListenerRequestHandler)
* /wicket/bookmarkable/org.apache.wicket.MyPage?2-click-foo-bar-baz
* /wicket/bookmarkable/org.apache.wicket.MyPage?2-click.1-foo-bar-baz (1 is behavior index)
* (these will redirect to hybrid if page is not stateless)
* </pre>
*
* @author Matej Knopp
*/
public class BookmarkableMapper extends AbstractBookmarkableMapper
{
/**
* Construct.
*/
public BookmarkableMapper()
{
this(new PageParametersEncoder());
}
/**
* Construct.
*
* @param pageParametersEncoder
*/
public BookmarkableMapper(IPageParametersEncoder pageParametersEncoder)
{
super("notUsed", pageParametersEncoder);
}
@Override
protected Url buildUrl(UrlInfo info)
{
Url url = new Url();
url.getSegments().add(getContext().getNamespace());
url.getSegments().add(getContext().getBookmarkableIdentifier());
url.getSegments().add(info.getPageClass().getName());
encodePageComponentInfo(url, info.getPageComponentInfo());
return encodePageParameters(url, info.getPageParameters(), pageParametersEncoder);
}
@Override
protected UrlInfo parseRequest(Request request)
{
if (Application.exists())
{
if (Application.get().getSecuritySettings().getEnforceMounts())
{
return null;
}
}
if (matches(request))
{
Url url = request.getUrl();
// try to extract page and component information from URL
PageComponentInfo info = getPageComponentInfo(url);
List<String> segments = url.getSegments();
// load the page class
String className;
if (segments.size() >= 3)
{
className = segments.get(2);
}
else
{
className = segments.get(1);
}
if (Strings.isEmpty(className))
{
return null;
}
Class<? extends IRequestablePage> pageClass = getPageClass(className);
if (pageClass != null && IRequestablePage.class.isAssignableFrom(pageClass))
{
// extract the PageParameters from URL if there are any
PageParameters pageParameters = extractPageParameters(request, 3,
pageParametersEncoder);
return new UrlInfo(info, pageClass, pageParameters);
}
}
return null;
}
private boolean isPageMounted(Class<? extends IRequestablePage> pageClass, ICompoundRequestMapper compoundMapper)
{
for (IRequestMapper requestMapper : compoundMapper)
{
while (requestMapper instanceof IRequestMapperDelegate)
{
requestMapper = ((IRequestMapperDelegate)requestMapper).getDelegateMapper();
}
if (requestMapper instanceof ICompoundRequestMapper)
{
if (isPageMounted(pageClass, (ICompoundRequestMapper)requestMapper))
{
return true;
}
}
else
{
if (requestMapper instanceof AbstractBookmarkableMapper && requestMapper != this)
{
AbstractBookmarkableMapper mapper = (AbstractBookmarkableMapper) requestMapper;
if (mapper.checkPageClass(pageClass))
{
return true;
}
}
}
}
return false;
}
@Override
protected boolean pageMustHaveBeenCreatedBookmarkable()
{
return true;
}
@Override
public int getCompatibilityScore(Request request)
{
int score = 0;
if (matches(request))
{
score = Integer.MAX_VALUE;
}
return score;
}
private boolean matches(final Request request)
{
boolean matches = false;
Url url = request.getUrl();
Url baseUrl = request.getClientUrl();
String namespace = getContext().getNamespace();
String bookmarkableIdentifier = getContext().getBookmarkableIdentifier();
String pageIdentifier = getContext().getPageIdentifier();
List<String> segments = url.getSegments();
int segmentsSize = segments.size();
if (segmentsSize >= 3 && urlStartsWithAndHasPageClass(url, namespace, bookmarkableIdentifier))
{
matches = true;
}
// baseUrl = 'wicket/bookmarkable/com.example.SomePage[?...]', requestUrl = 'bookmarkable/com.example.SomePage'
else if (baseUrl.getSegments().size() == 3 && urlStartsWith(baseUrl, namespace, bookmarkableIdentifier)
&& segmentsSize >= 2 && urlStartsWithAndHasPageClass(url, bookmarkableIdentifier))
{
matches = true;
}
// baseUrl = 'bookmarkable/com.example.SomePage', requestUrl = 'bookmarkable/com.example.SomePage'
else if (baseUrl.getSegments().size() == 2 && urlStartsWith(baseUrl, bookmarkableIdentifier)
&& segmentsSize == 2 && urlStartsWithAndHasPageClass(url, bookmarkableIdentifier))
{
matches = true;
}
// baseUrl = 'wicket/page[?...]', requestUrl = 'bookmarkable/com.example.SomePage'
else if (baseUrl.getSegments().size() == 2 && urlStartsWith(baseUrl, namespace, pageIdentifier)
&& segmentsSize >= 2 && urlStartsWithAndHasPageClass(url, bookmarkableIdentifier))
{
matches = true;
}
return matches;
}
/**
* Checks whether the url starts with the given segments and additionally
* checks whether the following segment is non-empty
*
* @param url
* The url to be checked
* @param segments
* The expected leading segments
* @return {@code true} if the url starts with the given segments and there is non-empty segment after them
*/
protected boolean urlStartsWithAndHasPageClass(Url url, String... segments)
{
boolean result = urlStartsWith(url, segments);
if (result)
{
List<String> urlSegments = url.getSegments();
if (urlSegments.size() == segments.length)
{
result = false;
}
else
{
String pageClassSegment = urlSegments.get(segments.length);
if (Strings.isEmpty(pageClassSegment))
{
result = false;
}
}
}
return result;
}
}