| // 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.internal.services.ajax; |
| |
| import java.io.IOException; |
| |
| import org.apache.tapestry5.internal.services.RequestConstants; |
| import org.apache.tapestry5.ioc.internal.util.InternalUtils; |
| import org.apache.tapestry5.services.Ajax; |
| import org.apache.tapestry5.services.ComponentEventRequestFilter; |
| import org.apache.tapestry5.services.ComponentEventRequestHandler; |
| import org.apache.tapestry5.services.ComponentEventRequestParameters; |
| import org.apache.tapestry5.services.Request; |
| |
| /** |
| * Filter for the {@link Ajax} {@link ComponentEventRequestHandler} that informs the {@link AjaxFormUpdateController} |
| * about the form's client id and component id. Partial renders work with the |
| * AjaxFormUpdateController to ensure that the Form data, if any, is collected and rendered |
| * as part of the response. |
| * |
| * @since 5.2.0 |
| */ |
| public class AjaxFormUpdateFilter implements ComponentEventRequestFilter |
| { |
| private final Request request; |
| |
| private final AjaxFormUpdateController ajaxFormUpdateController; |
| |
| public AjaxFormUpdateFilter(Request request, AjaxFormUpdateController ajaxFormUpdateController) |
| { |
| this.request = request; |
| this.ajaxFormUpdateController = ajaxFormUpdateController; |
| } |
| |
| public void handle(ComponentEventRequestParameters parameters, ComponentEventRequestHandler handler) |
| throws IOException |
| { |
| String formClientId = request.getParameter(RequestConstants.FORM_CLIENTID_PARAMETER); |
| String formComponentId = request.getParameter(RequestConstants.FORM_COMPONENTID_PARAMETER); |
| |
| if (InternalUtils.isNonBlank(formClientId) && InternalUtils.isNonBlank(formComponentId)) |
| ajaxFormUpdateController.initializeForForm(formComponentId, formClientId); |
| |
| handler.handle(parameters); |
| } |
| } |