X-Git-Url: http://wamblee.org/gitweb/?a=blobdiff_plain;f=wicket%2Fcomponents%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fwicket%2Fpage%2FDisableCachingBehavior.java;fp=wicket%2Fcomponents%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fwicket%2Fpage%2FDisableCachingBehavior.java;h=04003a2c4769b4d0a4a740e904f39d1349db62be;hb=7e7d1f6f67766d5998d4631cffadb79da06a0acd;hp=0000000000000000000000000000000000000000;hpb=8e865a37b331adac21be54a9fbbc5bec1585d925;p=utils

diff --git a/wicket/components/src/main/java/org/wamblee/wicket/page/DisableCachingBehavior.java b/wicket/components/src/main/java/org/wamblee/wicket/page/DisableCachingBehavior.java
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index 00000000..04003a2c
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+++ b/wicket/components/src/main/java/org/wamblee/wicket/page/DisableCachingBehavior.java
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+/*
+ * Copyright 2005-2010 the original author or authors.
+ * 
+ * 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.wamblee.wicket.page;
+
+import org.apache.wicket.markup.html.WebPage;
+import org.apache.wicket.protocol.http.WebResponse;
+
+/**
+ * <p>
+ * Behavior to disable browser caching. This also means that the page
+ * automatically expires the first time after it is rendered.
+ * </p>
+ * 
+ * <p>
+ * Important: To make sure that form data cannot be submitted twice for the same
+ * data using the back button, it is still necessary to explicitly call
+ * <code>getPage().getPageMap().remove(getPage());</code> in the
+ * <code>onSubmit</code> callback of the form.
+ * </p>
+ * 
+ * @author Erik Brakkee
+ * 
+ */
+public class DisableCachingBehavior extends ExpirePageImmediatelyBehavior {
+
+    @Override
+    public void setHeaders(WebPage aPage, WebResponse aResponse) {
+        aResponse.setHeader("Pragma", "no-cache");
+        aResponse.setHeader("Cache-Control",
+            "no-cache, max-age=0, must-revalidate, no-store");
+    }
+}