Rollback r5208, since it is failing on IE7.
git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5210 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/jsonp/Jsonp.gwt.xml b/user/src/com/google/gwt/jsonp/Jsonp.gwt.xml
deleted file mode 100644
index fd39299..0000000
--- a/user/src/com/google/gwt/jsonp/Jsonp.gwt.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<!-- -->
-<!-- Copyright 2009 Google Inc. -->
-<!-- Licensed under the Apache License, Version 2.0 (the "License"); you -->
-<!-- may not use this file except in compliance with the License. You may -->
-<!-- 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. License for the specific language governing permissions and -->
-<!-- limitations under the License. -->
-
-<module>
- <inherits name='com.google.gwt.user.User'/>
- <source path="client"/>
-</module>
diff --git a/user/src/com/google/gwt/jsonp/client/JsonpRequest.java b/user/src/com/google/gwt/jsonp/client/JsonpRequest.java
deleted file mode 100644
index fe64eec..0000000
--- a/user/src/com/google/gwt/jsonp/client/JsonpRequest.java
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * Copyright 2009 Google Inc.
- *
- * 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.google.gwt.jsonp.client;
-
-import com.google.gwt.dom.client.Document;
-import com.google.gwt.dom.client.Node;
-import com.google.gwt.dom.client.ScriptElement;
-import com.google.gwt.user.client.Command;
-import com.google.gwt.user.client.DeferredCommand;
-import com.google.gwt.user.client.Timer;
-import com.google.gwt.user.client.rpc.AsyncCallback;
-
-/**
- * A JSONP request that is waiting for a response. The request can be cancelled.
- *
- * @param <T> the type of the response object.
- */
-public class JsonpRequest<T> {
-
- /**
- * Each request will be assigned a new id.
- */
- private static int callbackCounter = 0;
-
- private static native Node getDocumentElement() /*-{
- return $doc.documentElement;
- }-*/;
-
- private static String nextCallbackId() {
- return "__jsonp" + (callbackCounter++) + "__";
- }
-
- private final String callbackId;
-
- private final int timeout;
-
- private final AsyncCallback<T> callback;
-
- /**
- * Whether the result is expected to be an integer or not
- */
- @SuppressWarnings("unused") // used by JSNI
- private final boolean expectInteger;
-
- private final String callbackParam;
-
- private final String failureCallbackParam;
-
- /**
- * Timer which keeps track of timeouts.
- */
- private Timer timer;
-
- /**
- * Create a new JSONP request.
- *
- * @param callback The callback instance to notify when the response comes
- * back
- * @param timeout Time in ms after which a {@link TimeoutException} will be
- * thrown
- * @param expectInteger Should be true if T is {@link Integer}, false
- * otherwise
- * @param callbackParam Name of the url param of the callback function name
- * @param failureCallbackParam Name of the url param containing the the
- * failure callback function name, or null for no failure callback
- */
- JsonpRequest(AsyncCallback<T> callback, int timeout, boolean expectInteger,
- String callbackParam, String failureCallbackParam) {
- callbackId = nextCallbackId();
- this.callback = callback;
- this.timeout = timeout;
- this.expectInteger = expectInteger;
- this.callbackParam = callbackParam;
- this.failureCallbackParam = failureCallbackParam;
- }
-
- /**
- * Cancels a pending request.
- */
- public void cancel() {
- timer.cancel();
- unload();
- }
-
- public AsyncCallback<T> getCallback() {
- return callback;
- }
-
- public int getTimeout() {
- return timeout;
- }
-
- /**
- * Sends a request using the JSONP mechanism.
- *
- * @param baseUri To be sent to the server.
- */
- void send(final String baseUri) {
- registerCallbacks();
- StringBuffer uri = new StringBuffer(baseUri);
- uri.append(baseUri.contains("?") ? "&" : "?");
- uri.append(callbackParam).append("=").append(callbackId).append(
- ".onSuccess");
- if (failureCallbackParam != null) {
- uri.append("&");
- uri.append(failureCallbackParam).append("=").append(callbackId).append(
- ".onFailure");
- }
- ScriptElement script = Document.get().createScriptElement();
- script.setType("text/javascript");
- script.setId(callbackId);
- script.setSrc(uri.toString());
- getDocumentElement().getFirstChild().appendChild(script);
- timer = new Timer() {
- @Override
- public void run() {
- onFailure(new TimeoutException("Timeout while calling " + baseUri));
- }
- };
- timer.schedule(timeout);
- }
-
- @SuppressWarnings("unused") // used by JSNI
- private void onFailure(String message) {
- onFailure(new Exception(message));
- }
-
- private void onFailure(Throwable ex) {
- timer.cancel();
- try {
- if (callback != null) {
- callback.onFailure(ex);
- }
- } finally {
- unload();
- }
- }
-
- @SuppressWarnings("unused") // used by JSNI
- private void onSuccess(T data) {
- timer.cancel();
- try {
- if (callback != null) {
- callback.onSuccess(data);
- }
- } finally {
- unload();
- }
- }
-
- /**
- * Registers the callback methods that will be called when the JSONP response
- * comes back. 2 callbacks are created, one to return the value, and one to
- * notify a failure.
- */
- private native void registerCallbacks() /*-{
- var self = this;
- var callback = new Object();
- $wnd[this.@com.google.gwt.jsonp.client.JsonpRequest::callbackId] = callback;
- callback.onSuccess = function(data) {
- // Box primitive types
- if (typeof data == 'boolean') {
- data = @java.lang.Boolean::new(Z)(data);
- } else if (typeof data == 'number') {
- if (self.@com.google.gwt.jsonp.client.JsonpRequest::expectInteger) {
- data = @java.lang.Integer::new(I)(data);
- } else {
- data = @java.lang.Double::new(D)(data);
- }
- }
- self.@com.google.gwt.jsonp.client.JsonpRequest::onSuccess(Ljava/lang/Object;)(data);
- };
- if (this.@com.google.gwt.jsonp.client.JsonpRequest::failureCallbackParam) {
- callback.onFailure = function(message) {
- self.@com.google.gwt.jsonp.client.JsonpRequest::onFailure(Ljava/lang/String;)(message);
- };
- }
- }-*/;
-
- /**
- * Cleans everything once the response has been received: deletes the script
- * tag, unregisters the callback.
- */
- private void unload() {
- /*
- * Some browsers (IE7) require the script tag to be deleted outside the
- * scope of the script itself. Therefore, we need to defer the delete
- * statement after the callback execution.
- */
- DeferredCommand.addCommand(new Command() {
- public void execute() {
- unregisterCallbacks();
- Node script = Document.get().getElementById(callbackId);
- getDocumentElement().getFirstChild().removeChild(script);
- }
- });
- }
-
- private native void unregisterCallbacks() /*-{
- delete $wnd[this.@com.google.gwt.jsonp.client.JsonpRequest::callbackId];
- }-*/;
-}
diff --git a/user/src/com/google/gwt/jsonp/client/JsonpRequestBuilder.java b/user/src/com/google/gwt/jsonp/client/JsonpRequestBuilder.java
deleted file mode 100644
index 7d26448..0000000
--- a/user/src/com/google/gwt/jsonp/client/JsonpRequestBuilder.java
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * Copyright 2009 Google Inc.
- *
- * 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.google.gwt.jsonp.client;
-
-import com.google.gwt.core.client.JavaScriptObject;
-import com.google.gwt.user.client.rpc.AsyncCallback;
-
-
-/**
- * Class to send cross domain requests to an http server. The server will receive a request
- * including a callback url parameter, which should be used to return the response as following:
- *
- * <pre><callback>(<json>);</pre>
- *
- * where <callback> is the url parameter (see {@link #setCallbackParam(String)}), and
- * <json> is the response to the request in json format.
- *
- * This will result on the client to call the corresponding {@link AsyncCallback#onSuccess(Object)}
- * method.
- *
- * <p>
- * If needed, errors can be handled by a separate callback:
- *
- * <pre><failureCallback>(<error>);</pre>
- *
- * where <error> is a string containing an error message. This will result on the client to
- * call the corresponding {@link AsyncCallback#onFailure(Throwable)} method. See
- * {@link #setFailureCallbackParam(String)}.
- *
- * <p>
- * Example using <a href="http://code.google.com/apis/gdata/json.html#Request">JSON Google Calendar
- * GData API</a>:
- *
- * <pre>
- * String url = "http://www.google.com/calendar/feeds/developer-calendar@google.com/public/full" +
- * "?alt=json-in-script";
- * JsonpRequestBuilder jsonp = new JsonpRequestBuilder();
- * jsonp.requestObject(url,
- * new AsyncCallback<Feed>() {
- * public void onFailure(Throwable throwable) {
- * Log.severe("Error: " + throwable);
- * }
- *
- * public void onSuccess(Feed feed) {
- * JsArray<Entry> entries = feed.getEntries();
- * for (int i = 0; i < entries.length(); i++) {
- * Entry entry = entries.get(i);
- * Log.info(entry.getTitle() +
- * " (" + entry.getWhere() + "): " +
- * entry.getStartTime() + " -> " +
- * entry.getEndTime());
- * }
- * }
- * });
- * </pre>
- *
- * This example uses these overlay types:
- *
- * <pre>
- * class Entry extends JavaScriptObject {
- * protected Entry() {}
- *
- * public final native String getTitle() /*-{
- * return this.title.$t;
- * }-*/;
- *
- * public final native String getWhere() /*-{
- * return this.gd$where[0].valueString;
- * }-*/;
- *
- * public final native String getStartTime() /*-{
- * return this.gd$when ? this.gd$when[0].startTime : null;
- * }-*/;
- *
- * public final native String getEndTime() /*-{
- * return this.gd$when ? this.gd$when[0].endTime : null;
- * }-*/;
- * }
- *
- * class Feed extends JavaScriptObject {
- * protected Feed() {}
- *
- * public final native JsArray<Entry> getEntries() /*-{
- * return this.feed.entry;
- * }-*/;
- * }
- * </pre>
- *
- * </p>
- */
-public class JsonpRequestBuilder {
- private int timeout = 10000;
- private String callbackParam = "callback";
- private String failureCallbackParam = null;
-
- /**
- * @return the name of the callback url parameter to send to the server. The default value is
- * "callback".
- */
- public String getCallbackParam() {
- return callbackParam;
- }
-
- /**
- * @return the name of the failure callback url parameter to send to the server. The default is
- * null.
- */
- public String getFailureCallbackParam() {
- return failureCallbackParam;
- }
-
- /**
- * @return the expected timeout (ms) for this request.
- */
- public int getTimeout() {
- return timeout;
- }
-
- public JsonpRequest<Boolean> requestBoolean(String url, AsyncCallback<Boolean> callback) {
- return send(url, callback, false);
- }
-
- public JsonpRequest<Double> requestDouble(String url, AsyncCallback<Double> callback) {
- return send(url, callback, false);
- }
-
- public JsonpRequest<Integer> requestInteger(String url, AsyncCallback<Integer> callback) {
- return send(url, callback, true);
- }
-
- /**
- * Sends a JSONP request and expects a JavaScript object as a result. The caller can either use
- * {@link com.google.gwt.json.client.JSONObject} to parse it, or use a JavaScript overlay class.
- */
- public <T extends JavaScriptObject> JsonpRequest<T> requestObject(String url,
- AsyncCallback<T> callback) {
- return send(url, callback, false);
- }
-
- public JsonpRequest<String> requestString(String url, AsyncCallback<String> callback) {
- return send(url, callback, false);
- }
-
- /**
- * Sends a JSONP request and does not expect any results.
- */
- public void send(String url) {
- send(url, null, false);
- }
-
- /**
- * Sends a JSONP request, does not expect any result, but still allows to be notified when the
- * request has been executed on the server.
- */
- public JsonpRequest<Void> send(String url, AsyncCallback<Void> callback) {
- return send(url, callback, false);
- }
-
- /**
- * @param callbackParam The name of the callback url parameter to send to the server. The default
- * value is "callback".
- */
- public void setCallbackParam(String callbackParam) {
- this.callbackParam = callbackParam;
- }
-
- /**
- * @param failureCallbackParam The name of the failure callback url parameter to send to the
- * server. The default is null.
- */
- public void setFailureCallbackParam(String failureCallbackParam) {
- this.failureCallbackParam = failureCallbackParam;
- }
-
- /**
- * @param timeout The expected timeout (ms) for this request. The default is 10s.
- */
- public void setTimeout(int timeout) {
- this.timeout = timeout;
- }
-
- private <T> JsonpRequest<T> send(String url, AsyncCallback<T> callback, boolean expectInteger) {
- JsonpRequest<T> request = new JsonpRequest<T>(callback, timeout, expectInteger, callbackParam,
- failureCallbackParam);
- request.send(url);
- return request;
- }
-}
diff --git a/user/src/com/google/gwt/jsonp/client/TimeoutException.java b/user/src/com/google/gwt/jsonp/client/TimeoutException.java
deleted file mode 100644
index 703f663..0000000
--- a/user/src/com/google/gwt/jsonp/client/TimeoutException.java
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright 2009 Google Inc.
- *
- * 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.google.gwt.jsonp.client;
-
-/**
- * Exception sent when a JSONP calls expires the timeout.
- */
-public class TimeoutException extends Exception {
-
- public TimeoutException() {
- }
-
- public TimeoutException(String s) {
- super(s);
- }
-}
diff --git a/user/test/com/google/gwt/jsonp/JsonpRequestSuite.java b/user/test/com/google/gwt/jsonp/JsonpRequestSuite.java
deleted file mode 100644
index 34fe230..0000000
--- a/user/test/com/google/gwt/jsonp/JsonpRequestSuite.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright 2009 Google Inc.
- *
- * 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.google.gwt.jsonp;
-
-import com.google.gwt.jsonp.client.JsonpRequestTest;
-
-import junit.framework.Test;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
-
-/**
- * Suite for JSONP tests.
- */
-public class JsonpRequestSuite extends TestCase {
- public static Test suite() {
- TestSuite suite = new TestSuite();
- suite.addTestSuite(JsonpRequestTest.class);
- return suite;
- }
-}
diff --git a/user/test/com/google/gwt/jsonp/JsonpTest.gwt.xml b/user/test/com/google/gwt/jsonp/JsonpTest.gwt.xml
deleted file mode 100644
index 989fc8d..0000000
--- a/user/test/com/google/gwt/jsonp/JsonpTest.gwt.xml
+++ /dev/null
@@ -1,25 +0,0 @@
-<!-- -->
-<!-- Copyright 2009 Google Inc. -->
-<!-- Licensed under the Apache License, Version 2.0 (the "License"); you -->
-<!-- may not use this file except in compliance with the License. You may -->
-<!-- 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. License for the specific language governing permissions and -->
-<!-- limitations under the License. -->
-
-<module>
- <!-- Inherit the JUnit support -->
- <inherits name='com.google.gwt.junit.JUnit'/>
- <inherits name = 'com.google.gwt.jsonp.Jsonp'/>
-
- <!-- Include client-side source for the test cases -->
- <source path="client"/>
-
- <!-- JSONP servlet for testing -->
- <servlet path='/echo' class='com.google.gwt.jsonp.server.EchoServlet'/>
-</module>
diff --git a/user/test/com/google/gwt/jsonp/client/JsonpRequestTest.java b/user/test/com/google/gwt/jsonp/client/JsonpRequestTest.java
deleted file mode 100644
index 7784827..0000000
--- a/user/test/com/google/gwt/jsonp/client/JsonpRequestTest.java
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * Copyright 2009 Google Inc.
- *
- * 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.google.gwt.jsonp.client;
-
-import com.google.gwt.core.client.GWT;
-import com.google.gwt.junit.client.GWTTestCase;
-import com.google.gwt.user.client.rpc.AsyncCallback;
-
-/**
- * Tests for {@link JsonpRequest}.
- */
-public class JsonpRequestTest extends GWTTestCase {
-
- /**
- * Checks that an error is received.
- */
- private class AssertFailureCallback<T> implements AsyncCallback<T> {
- private String expectedMessage;
-
- public AssertFailureCallback(String expectedMessage) {
- this.expectedMessage = expectedMessage;
- }
-
- public void onFailure(Throwable throwable) {
- assertEquals(expectedMessage, throwable.getMessage());
- finishTest();
- }
-
- public void onSuccess(T value) {
- fail();
- }
- }
-
- /**
- * Checks that the received value is as expected.
- */
- private class AssertSuccessCallback<T> implements AsyncCallback<T> {
- private T expectedValue;
-
- private AssertSuccessCallback(T expectedValue) {
- this.expectedValue = expectedValue;
- }
-
- public void onFailure(Throwable throwable) {
- fail();
- }
-
- public void onSuccess(T value) {
- assertEquals(expectedValue, value);
- finishTest();
- }
- }
-
- /**
- * Checks that a timeout happens.
- */
- private class AssertTimeoutException<T> implements AsyncCallback<T> {
- public void onFailure(Throwable throwable) {
- assertTrue(throwable instanceof TimeoutException);
- finishTest();
- }
-
- public void onSuccess(T value) {
- fail();
- }
- }
-
- private static String echo(String value) {
- return GWT.getModuleBaseURL() + "echo?action=SUCCESS&value=" + value;
- }
-
- private static String echoFailure(String error) {
- return GWT.getModuleBaseURL() + "echo?action=FAILURE&error=" + error;
- }
-
- private static String echoTimeout() {
- return GWT.getModuleBaseURL() + "echo?action=TIMEOUT";
- }
-
- private JsonpRequestBuilder jsonp;
-
- @Override
- public String getModuleName() {
- return "com.google.gwt.jsonp.JsonpTest";
- }
-
- public void testBooleanFalse() {
- jsonp.requestBoolean(echo("false"), new AssertSuccessCallback<Boolean>(
- Boolean.FALSE));
- delayTestFinish(500);
- }
-
- public void testBooleanTrue() {
- jsonp.requestBoolean(echo("true"), new AssertSuccessCallback<Boolean>(
- Boolean.TRUE));
- delayTestFinish(500);
- }
-
- public void testDouble() {
- jsonp.requestDouble(echo("123.456"), new AssertSuccessCallback<Double>(
- 123.456));
- delayTestFinish(500);
- }
-
- public void testFailureCallback() {
- jsonp.setFailureCallbackParam("failureCallback");
- jsonp.requestString(echoFailure("ERROR"),
- new AssertFailureCallback<String>("ERROR"));
- delayTestFinish(500);
- }
-
- public void testInteger() {
- jsonp.requestInteger(echo("123"), new AssertSuccessCallback<Integer>(123));
- delayTestFinish(500);
- }
-
- /**
- * Tests that if no failure callback is defined, the servlet receives well
- * only a 'callback' parameter, and sends back the error to it.
- */
- public void testNoFailureCallback() {
- jsonp.setFailureCallbackParam(null);
- jsonp.requestString(echoFailure("ERROR"),
- new AssertSuccessCallback<String>("ERROR"));
- delayTestFinish(500);
- }
-
- public void testNullBoolean() {
- jsonp.requestBoolean(echo("null"), new AssertSuccessCallback<Boolean>(null));
- delayTestFinish(500);
- }
-
- public void testNullDouble() {
- jsonp.requestDouble(echo("null"), new AssertSuccessCallback<Double>(null));
- delayTestFinish(500);
- }
-
- public void testNullInteger() {
- jsonp.requestInteger(echo("null"), new AssertSuccessCallback<Integer>(null));
- delayTestFinish(500);
- }
-
- public void testNullString() {
- jsonp.requestString(echo("null"), new AssertSuccessCallback<String>(null));
- delayTestFinish(500);
- }
-
- public void testString() {
- jsonp.requestString(echo("'Hello'"), new AssertSuccessCallback<String>(
- "Hello"));
- delayTestFinish(500);
- }
-
- public void testTimeout() {
- jsonp.requestString(echoTimeout(), new AssertTimeoutException<String>());
- delayTestFinish(2000);
- }
-
- public void testVoid() {
- jsonp.send(echo(null), new AssertSuccessCallback<Void>(null));
- delayTestFinish(500);
- }
-
- @Override
- protected void gwtSetUp() throws Exception {
- jsonp = new JsonpRequestBuilder();
- jsonp.setTimeout(1000);
- }
-}
diff --git a/user/test/com/google/gwt/jsonp/server/EchoServlet.java b/user/test/com/google/gwt/jsonp/server/EchoServlet.java
deleted file mode 100644
index bdee3ef..0000000
--- a/user/test/com/google/gwt/jsonp/server/EchoServlet.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright 2009 Google Inc.
- *
- * 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.google.gwt.jsonp.server;
-
-import java.io.IOException;
-
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-/**
- * A servlet that returns a given value, following the JSONP protocol.
- * Expected url parameters:
- *
- * <ul>
- * <li>action: one of the following values:
- * <ul>
- * <li>TIMEOUT: don't respond anything to simulate a timeout
- * <li>SUCCESS: return a JSON value
- * <li>FAILURE: return an error
- * </ul>
- * <li>value: the JSON value to return if action == "SUCCESS"
- * <li>error: the error message to return if action == "FAILURE"
- * </ul>
- */
-public class EchoServlet extends HttpServlet {
-
- private enum Action {
- SUCCESS,
- FAILURE,
- TIMEOUT
- }
-
- @Override
- protected void service(HttpServletRequest req, HttpServletResponse res)
- throws ServletException, IOException {
- switch (Action.valueOf(req.getParameter("action"))) {
- case SUCCESS: {
- String callback = req.getParameter("callback");
- String value = req.getParameter("value");
- if (value == null) {
- value = "";
- }
- res.getWriter().println(callback + "(" + value + ");");
- break;
- }
-
- case FAILURE: {
- String failureCallback = req.getParameter("failureCallback");
- String error = req.getParameter("error");
- if (failureCallback != null) {
- res.getWriter().println(failureCallback + "('" + error + "');");
- } else {
- // If no failure callback is defined, send the error through the
- // success callback.
- String callback = req.getParameter("callback");
- res.getWriter().println(callback + "('" + error + "');");
- }
- break;
- }
-
- case TIMEOUT:
- // Don't respond anything so that a timeout happens.
- }
- }
-}
