1 files changed, 199 insertions, 0 deletions
diff --git a/server/src/com/vaadin/terminal/CombinedRequest.java b/server/src/com/vaadin/terminal/CombinedRequest.java
new file mode 100644
index 0000000000..3d6c3c2149
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+++ b/server/src/com/vaadin/terminal/CombinedRequest.java
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+/*
+ * Copyright 2011 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.terminal;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.Map;
+
+import com.vaadin.Application;
+import com.vaadin.external.json.JSONArray;
+import com.vaadin.external.json.JSONException;
+import com.vaadin.external.json.JSONObject;
+import com.vaadin.terminal.gwt.server.WebApplicationContext;
+import com.vaadin.terminal.gwt.server.WebBrowser;
+
+/**
+ * A {@link WrappedRequest} with path and parameters from one request and
+ * {@link WrappedRequest.BrowserDetails} extracted from another request.
+ * 
+ * This class is intended to be used for a two request initialization where the
+ * first request fetches the actual application page and the second request
+ * contains information extracted from the browser using javascript.
+ * 
+ */
+public class CombinedRequest implements WrappedRequest {
+
+    private final WrappedRequest secondRequest;
+    private Map<String, String[]> parameterMap;
+
+    /**
+     * Creates a new combined request based on the second request and some
+     * details from the first request.
+     * 
+     * @param secondRequest
+     *            the second request which will be used as the foundation of the
+     *            combined request
+     * @throws JSONException
+     *             if the initialParams parameter can not be decoded
+     */
+    public CombinedRequest(WrappedRequest secondRequest) throws JSONException {
+        this.secondRequest = secondRequest;
+
+        HashMap<String, String[]> map = new HashMap<String, String[]>();
+        JSONObject initialParams = new JSONObject(
+                secondRequest.getParameter("initialParams"));
+        for (Iterator<?> keys = initialParams.keys(); keys.hasNext();) {
+            String name = (String) keys.next();
+            JSONArray jsonValues = initialParams.getJSONArray(name);
+            String[] values = new String[jsonValues.length()];
+            for (int i = 0; i < values.length; i++) {
+                values[i] = jsonValues.getString(i);
+            }
+            map.put(name, values);
+        }
+
+        parameterMap = Collections.unmodifiableMap(map);
+
+    }
+
+    @Override
+    public String getParameter(String parameter) {
+        String[] strings = getParameterMap().get(parameter);
+        if (strings == null || strings.length == 0) {
+            return null;
+        } else {
+            return strings[0];
+        }
+    }
+
+    @Override
+    public Map<String, String[]> getParameterMap() {
+        return parameterMap;
+    }
+
+    @Override
+    public int getContentLength() {
+        return secondRequest.getContentLength();
+    }
+
+    @Override
+    public InputStream getInputStream() throws IOException {
+        return secondRequest.getInputStream();
+    }
+
+    @Override
+    public Object getAttribute(String name) {
+        return secondRequest.getAttribute(name);
+    }
+
+    @Override
+    public void setAttribute(String name, Object value) {
+        secondRequest.setAttribute(name, value);
+    }
+
+    @Override
+    public String getRequestPathInfo() {
+        return secondRequest.getParameter("initialPath");
+    }
+
+    @Override
+    public int getSessionMaxInactiveInterval() {
+        return secondRequest.getSessionMaxInactiveInterval();
+    }
+
+    @Override
+    public Object getSessionAttribute(String name) {
+        return secondRequest.getSessionAttribute(name);
+    }
+
+    @Override
+    public void setSessionAttribute(String name, Object attribute) {
+        secondRequest.setSessionAttribute(name, attribute);
+    }
+
+    @Override
+    public String getContentType() {
+        return secondRequest.getContentType();
+    }
+
+    @Override
+    public BrowserDetails getBrowserDetails() {
+        return new BrowserDetails() {
+            @Override
+            public String getUriFragment() {
+                String fragment = secondRequest.getParameter("fr");
+                if (fragment == null) {
+                    return "";
+                } else {
+                    return fragment;
+                }
+            }
+
+            @Override
+            public String getWindowName() {
+                return secondRequest.getParameter("wn");
+            }
+
+            @Override
+            public WebBrowser getWebBrowser() {
+                WebApplicationContext context = (WebApplicationContext) Application
+                        .getCurrent().getContext();
+                return context.getBrowser();
+            }
+        };
+    }
+
+    /**
+     * Gets the original second request. This can be used e.g. if a request
+     * parameter from the second request is required.
+     * 
+     * @return the original second wrapped request
+     */
+    public WrappedRequest getSecondRequest() {
+        return secondRequest;
+    }
+
+    @Override
+    public Locale getLocale() {
+        return secondRequest.getLocale();
+    }
+
+    @Override
+    public String getRemoteAddr() {
+        return secondRequest.getRemoteAddr();
+    }
+
+    @Override
+    public boolean isSecure() {
+        return secondRequest.isSecure();
+    }
+
+    @Override
+    public String getHeader(String name) {
+        return secondRequest.getHeader(name);
+    }
+
+    @Override
+    public DeploymentConfiguration getDeploymentConfiguration() {
+        return secondRequest.getDeploymentConfiguration();
+    }
+}