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- /*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * 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 com.vaadin.server;
-
- import javax.servlet.http.HttpServletResponse;
- import javax.servlet.http.HttpServletResponseWrapper;
-
- /**
- * Wrapper for {@link HttpServletResponse}.
- *
- * @author Vaadin Ltd.
- * @since 7.0
- *
- * @see VaadinResponse
- * @see VaadinServletRequest
- */
- public class VaadinServletResponse extends HttpServletResponseWrapper implements
- VaadinResponse {
-
- private VaadinServletService vaadinService;
-
- /**
- * Wraps a http servlet response and an associated vaadin service
- *
- * @param response
- * the http servlet response to wrap
- * @param vaadinService
- * the associated vaadin service
- */
- public VaadinServletResponse(HttpServletResponse response,
- VaadinServletService vaadinService) {
- super(response);
- this.vaadinService = vaadinService;
- }
-
- /**
- * Gets the original unwrapped <code>HttpServletResponse</code>
- *
- * @return the unwrapped response
- */
- public HttpServletResponse getHttpServletResponse() {
- return this;
- }
-
- @Override
- public void setCacheTime(long milliseconds) {
- doSetCacheTime(this, milliseconds);
- }
-
- // Implementation shared with VaadinPortletResponse
- static void doSetCacheTime(VaadinResponse response, long milliseconds) {
- if (milliseconds <= 0) {
- response.setHeader("Cache-Control", "no-cache");
- response.setHeader("Pragma", "no-cache");
- response.setDateHeader("Expires", 0);
- } else {
- response.setHeader("Cache-Control", "max-age=" + milliseconds
- / 1000);
- response.setDateHeader("Expires", System.currentTimeMillis()
- + milliseconds);
- // Required to apply caching in some Tomcats
- response.setHeader("Pragma", "cache");
- }
- }
-
- @Override
- public VaadinServletService getService() {
- return vaadinService;
- }
- }
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