// 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
package org.apache.tapestry5.internal.services.ajax;
import org.apache.tapestry5.ClientBodyElement;
import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.internal.InternalConstants;
import org.apache.tapestry5.internal.services.PageRenderQueue;
import org.apache.tapestry5.internal.services.PageSource;
import org.apache.tapestry5.internal.services.RequestPageCache;
import org.apache.tapestry5.internal.structure.Page;
import org.apache.tapestry5.ioc.internal.util.InternalUtils;
import org.apache.tapestry5.ioc.services.TypeCoercer;
import org.apache.tapestry5.json.JSONObject;
import org.apache.tapestry5.runtime.RenderCommand;
import org.apache.tapestry5.services.PartialMarkupRenderer;
import org.apache.tapestry5.services.PartialMarkupRendererFilter;
import org.apache.tapestry5.services.Request;
import org.apache.tapestry5.services.ajax.AjaxResponseRenderer;
import org.apache.tapestry5.services.ajax.JSONCallback;
import org.apache.tapestry5.services.ajax.JavaScriptCallback;
import org.apache.tapestry5.services.javascript.JavaScriptSupport;
public class AjaxResponseRendererImpl implements AjaxResponseRenderer
{
private final PageRenderQueue queue;
private final AjaxFormUpdateController ajaxFormUpdateController;
private final TypeCoercer typeCoercer;
private final JavaScriptSupport javaScriptSupport;
private final RequestPageCache requestPageCache;
private final Request request;
public AjaxResponseRendererImpl(PageRenderQueue queue, AjaxFormUpdateController ajaxFormUpdateController, TypeCoercer typeCoercer, JavaScriptSupport javaScriptSupport, RequestPageCache requestPageCache, Request request)
{
this.queue = queue;
this.ajaxFormUpdateController = ajaxFormUpdateController;
this.typeCoercer = typeCoercer;
this.javaScriptSupport = javaScriptSupport;
this.requestPageCache = requestPageCache;
this.request = request;
}
public AjaxResponseRenderer addRender(String clientId, Object renderer)
{
assert InternalUtils.isNonBlank(clientId);
assert renderer != null;
RenderCommand command = typeCoercer.coerce(renderer, RenderCommand.class);
addFilter(new SingleZonePartialRendererFilter(clientId, command, queue, ajaxFormUpdateController));
return this;
}
public AjaxResponseRenderer addRender(ClientBodyElement zone)
{
assert zone != null;
final String clientId = zone.getClientId();
if (clientId == null)
{
throw new IllegalArgumentException(
"Attempt to render a ClientBodyElement, probably a Zone, with a null clientId. "
+ "You can solve this by using the id parameter.");
}
addRender(clientId, zone.getBody());
return this;
}
public AjaxResponseRenderer addCallback(final JavaScriptCallback callback)
{
assert callback != null;
addFilter(new PartialMarkupRendererFilter()
{
public void renderMarkup(MarkupWriter writer, JSONObject reply, PartialMarkupRenderer renderer)
{
renderer.renderMarkup(writer, reply);
callback.run(javaScriptSupport);
}
});
return this;
}
public AjaxResponseRenderer addCallback(final Runnable callback)
{
assert callback != null;
addFilter(new PartialMarkupRendererFilter()
{
public void renderMarkup(MarkupWriter writer, JSONObject reply, PartialMarkupRenderer renderer)
{
renderer.renderMarkup(writer, reply);
callback.run();
}
});
return this;
}
private boolean isRedirect(JSONObject reply)
{
return reply.has(InternalConstants.PARTIAL_KEY) &&
reply.in(InternalConstants.PARTIAL_KEY).has("redirectURL");
}
public AjaxResponseRenderer addFilter(final PartialMarkupRendererFilter filter)
{
assert filter != null;
queue.addPartialMarkupRendererFilter(new PartialMarkupRendererFilter()
{
public void renderMarkup(MarkupWriter writer, JSONObject reply, PartialMarkupRenderer delete)
{
if (isRedirect(reply))
{
// Bypass the callback.
delete.renderMarkup(writer, reply);
return;
}
filter.renderMarkup(writer, reply, delete);
}
});
return this;
}
public AjaxResponseRenderer addCallback(final JSONCallback callback)
{
assert callback != null;
addFilter(new PartialMarkupRendererFilter()
{
public void renderMarkup(MarkupWriter writer, JSONObject reply, PartialMarkupRenderer renderer)
{
renderer.renderMarkup(writer, reply);
callback.run(reply);
}
});
return this;
}
@Override
public void setupPartial(String pageName)
{
Page page = requestPageCache.get(pageName);
queue.setRenderingPage(page);
request.setAttribute(InternalConstants.PAGE_NAME_ATTRIBUTE_NAME, page.getName());
}
}