TUSCANY-2837 - Extending Javascript extension to provide the js proxy client file

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@759058 13f79535-47bb-0310-9956-ffa450edef68

6 files changed, 60 insertions, 648 deletions

diff --git a/branches/sca-java-1.x/modules/binding-atom-js/src/main/java/org/apache/tuscany/sca/binding/atom/js/AtomBindingJavascriptProxyFactoryImpl.java b/branches/sca-java-1.x/modules/binding-atom-js/src/main/java/org/apache/tuscany/sca/binding/atom/js/AtomBindingJavascriptProxyFactoryImpl.java
index 6c9abd8926..6b0170d2ce 100644
--- a/branches/sca-java-1.x/modules/binding-atom-js/src/main/java/org/apache/tuscany/sca/binding/atom/js/AtomBindingJavascriptProxyFactoryImpl.java
+++ b/branches/sca-java-1.x/modules/binding-atom-js/src/main/java/org/apache/tuscany/sca/binding/atom/js/AtomBindingJavascriptProxyFactoryImpl.java
@@ -20,6 +20,7 @@
 package org.apache.tuscany.sca.binding.atom.js;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.net.URI;
 
 import javax.xml.namespace.QName;
@@ -31,7 +32,8 @@ import org.apache.tuscany.sca.core.web.JavascriptProxyFactory;
 
 public class AtomBindingJavascriptProxyFactoryImpl implements JavascriptProxyFactory {
     private static final QName NAME = new QName("http://tuscany.apache.org/xmlns/sca/1.0", "binding.atom");
-    
+    private static final String JAVASCRIPT_FILE_NAME = "binding-atom.js";
+        
     public Class<?> getModelType() {
         return AtomBinding.class;
     }
@@ -39,8 +41,21 @@ public class AtomBindingJavascriptProxyFactoryImpl implements JavascriptProxyFac
     public QName getQName() {
         return NAME;
     }
+    
+    public String getJavascriptProxyFile() {
+        return JAVASCRIPT_FILE_NAME;
+    }
+
+    public InputStream getJavascriptProxyFileAsStream() throws IOException {
+        InputStream is = this.getClass().getClassLoader().getResourceAsStream(JAVASCRIPT_FILE_NAME);
+        if (is == null) {
+            throw new IOException("Could not find Javascript '" + JAVASCRIPT_FILE_NAME + "'" );
+        }
+        
+        return is;
+    }
 
-    public String scriptReference(ComponentReference componentReference) throws IOException {
+    public String createJavascriptReference(ComponentReference componentReference) throws IOException {
         Binding binding = componentReference.getBindings().get(0);
         URI targetURI = URI.create(binding.getURI());
         String targetPath = targetURI.getPath();
diff --git a/branches/sca-java-1.x/modules/binding-jsonrpc-js/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/js/JSONRPCBindingJavascriptProxyFactoryImpl.java b/branches/sca-java-1.x/modules/binding-jsonrpc-js/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/js/JSONRPCBindingJavascriptProxyFactoryImpl.java
index e0fda5c9f2..a396fe3bbf 100644
--- a/branches/sca-java-1.x/modules/binding-jsonrpc-js/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/js/JSONRPCBindingJavascriptProxyFactoryImpl.java
+++ b/branches/sca-java-1.x/modules/binding-jsonrpc-js/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/js/JSONRPCBindingJavascriptProxyFactoryImpl.java
@@ -20,6 +20,7 @@
 package org.apache.tuscany.sca.binding.jsonrpc.js;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.net.URI;
 
 import javax.xml.namespace.QName;
@@ -31,6 +32,7 @@ import org.apache.tuscany.sca.core.web.JavascriptProxyFactory;
 
 public class JSONRPCBindingJavascriptProxyFactoryImpl implements JavascriptProxyFactory {
     private static final QName NAME = new QName("http://tuscany.apache.org/xmlns/sca/1.0", "binding.jsonrpc");
+    private static final String JAVASCRIPT_FILE_NAME = "binding-jsonrpc.js";
     
     public Class<?> getModelType() {
         return JSONRPCBinding.class;
@@ -40,7 +42,20 @@ public class JSONRPCBindingJavascriptProxyFactoryImpl implements JavascriptProxy
         return NAME;
     }
 
-    public String scriptReference(ComponentReference componentReference) throws IOException {
+    public String getJavascriptProxyFile() {
+        return JAVASCRIPT_FILE_NAME;
+    }
+
+    public InputStream getJavascriptProxyFileAsStream() throws IOException {
+        InputStream is = this.getClass().getClassLoader().getResourceAsStream(JAVASCRIPT_FILE_NAME);
+        if (is == null) {
+            throw new IOException("Could not find Javascript '" + JAVASCRIPT_FILE_NAME + "'" );
+        }
+        
+        return is;
+    }
+    
+    public String createJavascriptReference(ComponentReference componentReference) throws IOException {
         Binding binding = componentReference.getBindings().get(0);
         URI targetURI = URI.create(binding.getURI());
         String targetPath = targetURI.getPath();
diff --git a/branches/sca-java-1.x/modules/core-web/src/main/java/org/apache/tuscany/sca/core/web/JavascriptProxyFactory.java b/branches/sca-java-1.x/modules/core-web/src/main/java/org/apache/tuscany/sca/core/web/JavascriptProxyFactory.java
index b6a0662a47..daac7925bd 100644
--- a/branches/sca-java-1.x/modules/core-web/src/main/java/org/apache/tuscany/sca/core/web/JavascriptProxyFactory.java
+++ b/branches/sca-java-1.x/modules/core-web/src/main/java/org/apache/tuscany/sca/core/web/JavascriptProxyFactory.java
@@ -20,6 +20,7 @@
 package org.apache.tuscany.sca.core.web;
 
 import java.io.IOException;
+import java.io.InputStream;
 
 import javax.xml.namespace.QName;
 
@@ -46,10 +47,23 @@ public interface JavascriptProxyFactory {
     QName getQName();
     
     /**
+     * Get the Javascript proxy client file name
+     * @return the javascript file name
+     */
+    String getJavascriptProxyFile();
+    
+    /**
+     * Get the Javascript proxy client contents as a stream
+     * @return
+     */
+    InputStream getJavascriptProxyFileAsStream() throws IOException;
+
+    
+    /**
      * Create a JavaScript Proxy for a given reference
      * @param componentReference The reference
      * @return the javascript proxy code
      * @throws IOException
      */
-    String scriptReference(ComponentReference componentReference) throws IOException;
+    String createJavascriptReference(ComponentReference componentReference) throws IOException;
 }
diff --git a/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetComponentScriptGenerator.java b/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetComponentScriptGenerator.java
index 0e56d25c51..40039f74c2 100644
--- a/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetComponentScriptGenerator.java
+++ b/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetComponentScriptGenerator.java
@@ -74,20 +74,18 @@ public class WidgetComponentScriptGenerator {
 
         for(ComponentReference reference : component.getReferences()) {
             for(Binding binding : reference.getBindings()) {
-                String [] bindingProxyNames = WidgetProxyHelper.getJavaScriptProxyFile(binding.getClass().getName());
+                JavascriptProxyFactory jsProxyFactory = javascriptProxyFactories.getProxyFactory(binding.getClass());
+
+                String bindingProxyName = jsProxyFactory.getJavascriptProxyFile();
                 //check if binding client code was already processed and inject to the generated script
-                if ( bindingProxyNames != null ) {
-                    for ( int i = 0; i < bindingProxyNames.length; i++ ) {
-                        String bindingProxyName = bindingProxyNames[ i ];
-                        if(bindingProxyName != null) {
-                            Boolean processedFlag = bindingClientProcessed.get(bindingProxyName);
-                            if( processedFlag == null || processedFlag.booleanValue() == false) {
-                                generateJavaScriptBindingProxy(pw,bindingProxyName);
-                                bindingClientProcessed.put(bindingProxyName, Boolean.TRUE);
-                            }
-                        }
+                if(bindingProxyName != null) {
+                    Boolean processedFlag = bindingClientProcessed.get(bindingProxyName);
+                    if( processedFlag == null || processedFlag.booleanValue() == false) {
+                        generateJavaScriptBindingProxy(jsProxyFactory, pw);
+                        bindingClientProcessed.put(bindingProxyName, Boolean.TRUE);
                     }
                 }
+
             }
         }
 
@@ -124,9 +122,8 @@ public class WidgetComponentScriptGenerator {
      * Retrieve the binding proxy based on the bind name
      * and embedded the JavaScript into this js
      */
-    private static void generateJavaScriptBindingProxy(PrintWriter pw, String bindingProxyName) throws IOException {
-        //FIXME: Handle the case where the JavaScript binding client is not found
-        InputStream is = WidgetComponentScriptGenerator.class.getClassLoader().getResourceAsStream(bindingProxyName);
+    private static void generateJavaScriptBindingProxy(JavascriptProxyFactory javascriptProxyFactory, PrintWriter pw) throws IOException {
+        InputStream is = javascriptProxyFactory.getJavascriptProxyFileAsStream();
         if (is != null) {
             int i;
             while ((i = is.read()) != -1) {
@@ -208,7 +205,7 @@ public class WidgetComponentScriptGenerator {
                 String referenceName = reference.getName();
                 JavascriptProxyFactory jsProxyFactory = javascriptProxyFactories.getProxyFactory(binding.getClass());
                 
-                pw.println("tuscany.sca.referenceMap." + referenceName + " = new " + jsProxyFactory.scriptReference(reference) + ";");
+                pw.println("tuscany.sca.referenceMap." + referenceName + " = new " + jsProxyFactory.createJavascriptReference(reference) + ";");
                 
             }
         }
diff --git a/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/resources/binding-atom.js b/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/resources/binding-atom.js
deleted file mode 100644
index 2719e9a9b9..0000000000
--- a/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/resources/binding-atom.js
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you 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.    
- */
-	
-function AtomClient(uri) {
-
-	this.msxmlNames = [ "MSXML2.XMLHTTP.5.0",
-                        "MSXML2.XMLHTTP.4.0",
-                        "MSXML2.XMLHTTP.3.0",
-                        "MSXML2.XMLHTTP",
-                        "Microsoft.XMLHTTP" ];
-			            
-	this.uri=uri;
-	
-	this.get = function(id, responseFunction) {
-		var xhr = this.createXMLHttpRequest();
-		xhr.onreadystatechange = function() {
-			if (xhr.readyState == 4) {
-				if (xhr.status == 200) {
-				    var strDocument = xhr.responseText;
-				    var xmlDocument = xhr.responseXML;
-				    if(!xmlDocument || xmlDocument.childNodes.length==0){ 
-                        xmlDocument = (new DOMParser()).parseFromString(strDocument, "text/xml");
-                    } 
-                    if (responseFunction != null) responseFunction(xmlDocument);
-				} else {
-                    alert("get - Error getting data from the server");
-				}
-			}
-		}
-		xhr.open("GET", uri + '/' + id, true);
-		xhr.send(null);
-	}	
-
-	this.post = function (entry, responseFunction) {
-		var xhr = this.createXMLHttpRequest();
-		xhr.onreadystatechange = function() {
-			if (xhr.readyState == 4) {
-				if (xhr.status == 201) {
-				    var strDocument = xhr.responseText;
-				    var xmlDocument = xhr.responseXML;
-				    if(!xmlDocument || xmlDocument.childNodes.length==0){ 
-                        xmlDocument = (new DOMParser()).parseFromString(strDocument, "text/xml");
-                    } 
-					if (responseFunction != null) responseFunction(xmlDocument);
-				} else {
-					alert("post - Error getting data from the server");
-				}
-			}
-		}
-		xhr.open("POST", uri, true);
-		xhr.setRequestHeader("Content-Type", "application/atom+xml");
-		xhr.send(entry);
-	}	
-
-	this.put = function (id, entry, responseFunction) {
-		var xhr = this.createXMLHttpRequest();
-		xhr.onreadystatechange = function() {
-			if (xhr.readyState == 4) {
-				if (xhr.status == 200) {
-				    var strDocument = xhr.responseText;
-				    var xmlDocument = xhr.responseXML;
-				    if(!xmlDocument || xmlDocument.childNodes.length==0){ 
-                        xmlDocument = (new DOMParser()).parseFromString(strDocument, "text/xml");
-                    } 
-					if (responseFunction != null) responseFunction(xmlDocument);
-				} else {
-					alert("put - Error getting data from the server");
-				}
-			}
-		}
-		xhr.open("PUT", uri + '/' + id, true);
-		xhr.setRequestHeader("Content-Type", "application/atom+xml");
-		xhr.send(entry);
-	}	
-
-	this.del = function (id, responseFunction) {       
-		var xhr = this.createXMLHttpRequest();
-		xhr.onreadystatechange = function() {
-			if (xhr.readyState == 4) {
-				if (xhr.status == 200) {
-					if (responseFunction != null) responseFunction();
-				} else {
-					alert("delete - Error getting data from the server");
-				}
-			}
-		}
-		xhr.open("DELETE", uri + '/' + id, true);		
-		xhr.send(null);
-	}
-	this.createXMLHttpRequest = function () {
-        /* Mozilla XMLHttpRequest */
-        try {return new XMLHttpRequest();} catch(e) {}      
-		
-        /* Microsoft MSXML ActiveX */
-        for (var i=0;i < this.msxmlNames.length; i++) {
-            try {return new ActiveXObject(this.msxmlNames[i]);} catch (e) {}
-        }
-        alert("XML http request not supported");
-        return null;
-	}
-	if (typeof DOMParser == "undefined") {
-	   DOMParser = function () {}
-	
-	   DOMParser.prototype.parseFromString = function (str, contentType) {
-	      if (typeof ActiveXObject != "undefined") {
-	         var d = new ActiveXObject("MSXML.DomDocument");
-	         d.loadXML(str);
-	         return d;
-	      } else if (typeof XMLHttpRequest != "undefined") {
-	         var req = new XMLHttpRequest;
-	         req.open("GET", "data:" + (contentType || "application/xml") +
-	                         ";charset=utf-8," + encodeURIComponent(str), false);
-	         if (req.overrideMimeType) {
-	            req.overrideMimeType(contentType);
-	         }
-	         req.send(null);
-	         return req.responseXML;
-	      }
-      }
-   }
-}
diff --git a/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/resources/binding-jsonrpc.js b/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/resources/binding-jsonrpc.js
deleted file mode 100644
index ca3c2a8605..0000000000
--- a/branches/sca-java-1.x/modules/implementation-widget-runtime/src/main/resources/binding-jsonrpc.js
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- * JSON-RPC JavaScript client
- *
- * $Id: jsonrpc.js,v 1.36.2.3 2006/03/08 15:09:37 mclark Exp $
- *
- * Copyright (c) 2003-2004 Jan-Klaas Kollhof
- * Copyright (c) 2005 Michael Clark, Metaparadigm Pte Ltd
- *
- * This code is based on Jan-Klaas' JavaScript o lait library (jsolait).
- *
- * 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.
- *
- */
-
-/*
- * Modifications for Apache Tuscany:
- * - JSONRpcClient_createMethod changed so callback is last arg
- */
-
-/* escape a character */
-
-escapeJSONChar =
-function escapeJSONChar(c)
-{
-    if(c == "\"" || c == "\\") return "\\" + c;
-    else if (c == "\b") return "\\b";
-    else if (c == "\f") return "\\f";
-    else if (c == "\n") return "\\n";
-    else if (c == "\r") return "\\r";
-    else if (c == "\t") return "\\t";
-    var hex = c.charCodeAt(0).toString(16);
-    if(hex.length == 1) return "\\u000" + hex;
-    else if(hex.length == 2) return "\\u00" + hex;
-    else if(hex.length == 3) return "\\u0" + hex;
-    else return "\\u" + hex;
-};
-
-
-/* encode a string into JSON format */
-
-escapeJSONString =
-function escapeJSONString(s)
-{
-    /* The following should suffice but Safari's regex is b0rken
-       (doesn't support callback substitutions)
-       return "\"" + s.replace(/([^\u0020-\u007f]|[\\\"])/g,
-       escapeJSONChar) + "\"";
-    */
-
-    /* Rather inefficient way to do it */
-    var parts = s.split("");
-    for(var i=0; i < parts.length; i++) {
-	var c =parts[i];
-	if(c == '"' ||
-	   c == '\\' ||
-	   c.charCodeAt(0) < 32 ||
-	   c.charCodeAt(0) >= 128)
-	    parts[i] = escapeJSONChar(parts[i]);
-    }
-    return "\"" + parts.join("") + "\"";
-};
-
-
-/* Marshall objects to JSON format */
-
-toJSON = function toJSON(o)
-{
-    if(o == null) {
-	return "null";
-    } else if(o.constructor == String) {
-	return escapeJSONString(o);
-    } else if(o.constructor == Number) {
-	return o.toString();
-    } else if(o.constructor == Boolean) {
-	return o.toString();
-    } else if(o.constructor == Date) {
-	return '{javaClass: "java.util.Date", time: ' + o.valueOf() +'}';
-    } else if(o.constructor == Array) {
-	var v = [];
-	for(var i = 0; i < o.length; i++) v.push(toJSON(o[i]));
-	return "[" + v.join(", ") + "]";
-    } else {
-	var v = [];
-	for(attr in o) {
-	    if(o[attr] == null) v.push("\"" + attr + "\": null");
-	    else if(typeof o[attr] == "function"); /* skip */
-	    else v.push(escapeJSONString(attr) + ": " + toJSON(o[attr]));
-	}
-	return "{" + v.join(", ") + "}";
-    }
-};
-
-
-/* JSONRpcClient constructor */
-
-JSONRpcClient =
-function JSONRpcClient_ctor(serverURL, user, pass, objectID)
-{
-    this.serverURL = serverURL;
-    this.user = user;
-    this.pass = pass;
-    this.objectID = objectID;
-
-    /* Add standard methods */
-    if(this.objectID) {
-	this._addMethods(["listMethods"]);
-	var req = this._makeRequest("listMethods", []);
-    } else {
-	this._addMethods(["system.listMethods"]);
-	var req = this._makeRequest("system.listMethods", []);
-    }
-    var m = this._sendRequest(req);
-    this._addMethods(m);
-};
-
-
-/* JSONRpcCLient.Exception */
-
-JSONRpcClient.Exception =
-function JSONRpcClient_Exception_ctor(code, message, javaStack)
-{
-    this.code = code;
-    var name;
-    if(javaStack) {
-	this.javaStack = javaStack;
-	var m = javaStack.match(/^([^:]*)/);
-	if(m) name = m[0];
-    }
-    if(name) this.name = name;
-    else this.name = "JSONRpcClientException";
-    this.message = message;
-};
-
-JSONRpcClient.Exception.CODE_REMOTE_EXCEPTION = 490;
-JSONRpcClient.Exception.CODE_ERR_CLIENT = 550;
-JSONRpcClient.Exception.CODE_ERR_PARSE = 590;
-JSONRpcClient.Exception.CODE_ERR_NOMETHOD = 591;
-JSONRpcClient.Exception.CODE_ERR_UNMARSHALL = 592;
-JSONRpcClient.Exception.CODE_ERR_MARSHALL = 593;
-
-JSONRpcClient.Exception.prototype = new Error();
-
-JSONRpcClient.Exception.prototype.toString =
-function JSONRpcClient_Exception_toString(code, msg)
-{
-    return this.name + ": " + this.message;
-};
-
-
-/* Default top level exception handler */
-
-JSONRpcClient.default_ex_handler =
-function JSONRpcClient_default_ex_handler(e) { alert(e); };
-
-
-/* Client settable variables */
-
-JSONRpcClient.toplevel_ex_handler = JSONRpcClient.default_ex_handler;
-JSONRpcClient.profile_async = false;
-JSONRpcClient.max_req_active = 1;
-JSONRpcClient.requestId = 1;
-
-
-/* JSONRpcClient implementation */
-
-JSONRpcClient.prototype._createMethod =
-function JSONRpcClient_createMethod(methodName)
-{
-    var fn=function()
-    {
-	var args = [];
-	var callback = null;
-	for(var i=0;i<arguments.length;i++) args.push(arguments[i]);
-
-/*	TUSCANY change callback to be last arg instead of first to match binding.ajax
-	if(typeof args[0] == "function") callback = args.shift();
-*/
-	if(typeof args[arguments.length-1] == "function") callback = args.pop();
-
-	var req = fn.client._makeRequest.call(fn.client, fn.methodName,
-					      args, callback);
-	if(callback == null) {
-	    return fn.client._sendRequest.call(fn.client, req);
-	} else {
-	    JSONRpcClient.async_requests.push(req);
-	    JSONRpcClient.kick_async();
-	    return req.requestId;
-	}
-    };
-    fn.client = this;
-    fn.methodName = methodName;
-    return fn;
-};
-
-JSONRpcClient.prototype._addMethods =
-function JSONRpcClient_addMethods(methodNames)
-{
-    for(var i=0; i<methodNames.length; i++) {
-	var obj = this;
-	var names = methodNames[i].split(".");
-	for(var n=0; n<names.length-1; n++) {
-	    var name = names[n];
-	    if(obj[name]) {
-		obj = obj[name];
-	    } else {
-		obj[name]  = new Object();
-		obj = obj[name];
-	    }
-	}
-	var name = names[names.length-1];
-	if(!obj[name]) {
-	    var method = this._createMethod(methodNames[i]);
-	    obj[name] = method;
-	}
-    }
-};
-
-JSONRpcClient._getCharsetFromHeaders =
-function JSONRpcClient_getCharsetFromHeaders(http)
-{
-    try {
-	var contentType = http.getResponseHeader("Content-type");
-	var parts = contentType.split(/\s*;\s*/);
-	for(var i =0; i < parts.length; i++) {
-	    if(parts[i].substring(0, 8) == "charset=")
-		return parts[i].substring(8, parts[i].length);
-	}
-    } catch (e) {}
-    return "UTF-8"; /* default */
-};
-
-/* Async queue globals */
-JSONRpcClient.async_requests = [];
-JSONRpcClient.async_inflight = {};
-JSONRpcClient.async_responses = [];
-JSONRpcClient.async_timeout = null;
-JSONRpcClient.num_req_active = 0;
-
-JSONRpcClient._async_handler =
-function JSONRpcClient_async_handler()
-{
-    JSONRpcClient.async_timeout = null;
-
-    while(JSONRpcClient.async_responses.length > 0) {
-	var res = JSONRpcClient.async_responses.shift();
-	if(res.canceled) continue;
-	if(res.profile) res.profile.dispatch = new Date();
-	try {
-	    res.cb(res.result, res.ex, res.profile);
-	} catch(e) {
-	    JSONRpcClient.toplevel_ex_handler(e);
-	}
-    }
-
-    while(JSONRpcClient.async_requests.length > 0 &&
-	  JSONRpcClient.num_req_active < JSONRpcClient.max_req_active) {
-	var req = JSONRpcClient.async_requests.shift();
-	if(req.canceled) continue;
-	req.client._sendRequest.call(req.client, req);
-    }
-};
-
-JSONRpcClient.kick_async =
-function JSONRpcClient_kick_async()
-{
-    if(JSONRpcClient.async_timeout == null)
-	JSONRpcClient.async_timeout =
-	    setTimeout(JSONRpcClient._async_handler, 0);
-};
-
-JSONRpcClient.cancelRequest =
-function JSONRpcClient_cancelRequest(requestId)
-{
-    /* If it is in flight then mark it as canceled in the inflight map
-       and the XMLHttpRequest callback will discard the reply. */
-    if(JSONRpcClient.async_inflight[requestId]) {
-	JSONRpcClient.async_inflight[requestId].canceled = true;
-	return true;
-    }
-
-    /* If its not in flight yet then we can just mark it as canceled in
-       the the request queue and it will get discarded before being sent. */
-    for(var i in JSONRpcClient.async_requests) {
-	if(JSONRpcClient.async_requests[i].requestId == requestId) {
-	    JSONRpcClient.async_requests[i].canceled = true;
-	    return true;
-	}
-    }
-
-    /* It may have returned from the network and be waiting for its callback
-       to be dispatched, so mark it as canceled in the response queue
-       and the response will get discarded before calling the callback. */
-    for(var i in JSONRpcClient.async_responses) {
-	if(JSONRpcClient.async_responses[i].requestId == requestId) {
-	    JSONRpcClient.async_responses[i].canceled = true;
-	    return true;
-	}
-    }
-
-    return false;
-};
-
-JSONRpcClient.prototype._makeRequest =
-function JSONRpcClient_makeRequest(methodName, args, cb)
-{
-    var req = {};
-    req.client = this;
-    req.requestId = JSONRpcClient.requestId++;
-
-    var obj = {};
-    obj.id = req.requestId;
-    if (this.objectID)
-	obj.method = ".obj#" + this.objectID + "." + methodName;
-    else
-	obj.method = methodName;
-    obj.params = args;
-
-    if (cb) req.cb = cb;
-    if (JSONRpcClient.profile_async)
-	req.profile = { "submit": new Date() };
-    req.data = toJSON(obj);
-
-    return req;
-};
-
-JSONRpcClient.prototype._sendRequest =
-function JSONRpcClient_sendRequest(req)
-{
-    if(req.profile) req.profile.start = new Date();
-
-    /* Get free http object from the pool */
-    var http = JSONRpcClient.poolGetHTTPRequest();
-    JSONRpcClient.num_req_active++;
-
-    /* Send the request */
-    if (typeof(this.user) == "undefined") {
-	http.open("POST", this.serverURL, (req.cb != null));
-    } else {
-	http.open("POST", this.serverURL, (req.cb != null), this.user, this.pass);
-    }
-
-    /* setRequestHeader is missing in Opera 8 Beta */
-    try { http.setRequestHeader("Content-type", "text/plain"); } catch(e) {}
-
-    /* Construct call back if we have one */
-    if(req.cb) {
-	var self = this;
-	http.onreadystatechange = function() {
-	    if(http.readyState == 4) {
-		http.onreadystatechange = function () {};
-		var res = { "cb": req.cb, "result": null, "ex": null};
-		if (req.profile) {
-		    res.profile = req.profile;
-		    res.profile.end = new Date();
-		}
-		try { res.result = self._handleResponse(http); }
-		catch(e) { res.ex = e; }
-		if(!JSONRpcClient.async_inflight[req.requestId].canceled)
-		    JSONRpcClient.async_responses.push(res);
-		delete JSONRpcClient.async_inflight[req.requestId];
-		JSONRpcClient.kick_async();
-	    }
-	};
-    } else {
-	http.onreadystatechange = function() {};
-    }
-
-    JSONRpcClient.async_inflight[req.requestId] = req;
-	
-    try {
-	http.send(req.data);
-    } catch(e) {
-	JSONRpcClient.poolReturnHTTPRequest(http);
-	JSONRpcClient.num_req_active--;
-	throw new JSONRpcClient.Exception
-	    (JSONRpcClient.Exception.CODE_ERR_CLIENT, "Connection failed");
-    }
-
-    if(!req.cb) return this._handleResponse(http);
-};
-
-JSONRpcClient.prototype._handleResponse =
-function JSONRpcClient_handleResponse(http)
-{
-    /* Get the charset */
-    if(!this.charset) {
-	this.charset = JSONRpcClient._getCharsetFromHeaders(http);
-    }
-
-    /* Get request results */
-    var status, statusText, data;
-    try {
-	status = http.status;
-	statusText = http.statusText;
-	data = http.responseText;
-    } catch(e) {
-	JSONRpcClient.poolReturnHTTPRequest(http);
-	JSONRpcClient.num_req_active--;
-	JSONRpcClient.kick_async();
-	throw new JSONRpcClient.Exception
-	    (JSONRpcClient.Exception.CODE_ERR_CLIENT, "Connection failed");
-    }
-
-    /* Return http object to the pool; */
-    JSONRpcClient.poolReturnHTTPRequest(http);
-    JSONRpcClient.num_req_active--;
-
-    /* Unmarshall the response */
-    if(status != 200) {
-	throw new JSONRpcClient.Exception(status, statusText);
-    }
-    var obj;
-    try {
-	eval("obj = " + data);
-    } catch(e) {
-	throw new JSONRpcClient.Exception(550, "error parsing result");
-    }
-    if(obj.error)
-	throw new JSONRpcClient.Exception(obj.error.code, obj.error.msg,
-					  obj.error.trace);
-    var res = obj.result;
-
-    /* Handle CallableProxy */
-    if(res && res.objectID && res.JSONRPCType == "CallableReference")
-	return new JSONRpcClient(this.serverURL, this.user,
-				 this.pass, res.objectID);
-
-    return res;
-};
-
-
-/* XMLHttpRequest wrapper code */
-
-/* XMLHttpRequest pool globals */
-JSONRpcClient.http_spare = [];
-JSONRpcClient.http_max_spare = 8;
-
-JSONRpcClient.poolGetHTTPRequest =
-function JSONRpcClient_pool_getHTTPRequest()
-{
-    if(JSONRpcClient.http_spare.length > 0) {
-	return JSONRpcClient.http_spare.pop();
-    }
-    return JSONRpcClient.getHTTPRequest();
-};
-
-JSONRpcClient.poolReturnHTTPRequest =
-function JSONRpcClient_poolReturnHTTPRequest(http)
-{
-    if(JSONRpcClient.http_spare.length >= JSONRpcClient.http_max_spare)
-	delete http;
-    else
-	JSONRpcClient.http_spare.push(http);
-};
-
-JSONRpcClient.msxmlNames = [ "MSXML2.XMLHTTP.5.0",
-			     "MSXML2.XMLHTTP.4.0",
-			     "MSXML2.XMLHTTP.3.0",
-			     "MSXML2.XMLHTTP",
-			     "Microsoft.XMLHTTP" ];
-
-JSONRpcClient.getHTTPRequest =
-function JSONRpcClient_getHTTPRequest()
-{
-    /* Mozilla XMLHttpRequest */
-    try {
-	JSONRpcClient.httpObjectName = "XMLHttpRequest";
-	return new XMLHttpRequest();
-    } catch(e) {}
-
-    /* Microsoft MSXML ActiveX */
-    for (var i=0;i < JSONRpcClient.msxmlNames.length; i++) {
-	try {
-	    JSONRpcClient.httpObjectName = JSONRpcClient.msxmlNames[i];
-	    return new ActiveXObject(JSONRpcClient.msxmlNames[i]);
-	} catch (e) {}
-    }
-
-    /* None found */
-    JSONRpcClient.httpObjectName = null;
-    throw new JSONRpcClient.Exception(0, "Can't create XMLHttpRequest object");
-};