1 files changed, 206 insertions, 0 deletions
diff --git a/branches/sca-java-1.x/modules/implementation-widget-runtime-dojo/src/main/java/org/apache/tuscany/sca/implementation/widget/dojo/DojoJavaScriptComponentGeneratorImpl.java b/branches/sca-java-1.x/modules/implementation-widget-runtime-dojo/src/main/java/org/apache/tuscany/sca/implementation/widget/dojo/DojoJavaScriptComponentGeneratorImpl.java
new file mode 100644
index 0000000000..275794e8e8
--- /dev/null
+++ b/branches/sca-java-1.x/modules/implementation-widget-runtime-dojo/src/main/java/org/apache/tuscany/sca/implementation/widget/dojo/DojoJavaScriptComponentGeneratorImpl.java
@@ -0,0 +1,206 @@
+/*
+ * 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.    
+ */
+
+package org.apache.tuscany.sca.implementation.widget.dojo;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.web.ComponentJavaScriptGenerator;
+import org.apache.tuscany.sca.core.web.JavascriptProxyFactory;
+import org.apache.tuscany.sca.core.web.JavascriptProxyFactoryExtensionPoint;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+public class DojoJavaScriptComponentGeneratorImpl implements ComponentJavaScriptGenerator {
+    private static final QName NAME = new QName("http://tuscany.apache.org/xmlns/sca/1.0", "component.script.generator.dojo");
+
+    private JavascriptProxyFactoryExtensionPoint javascriptProxyFactories;
+
+    public DojoJavaScriptComponentGeneratorImpl(ExtensionPointRegistry extensionPoints) {
+        this.javascriptProxyFactories = extensionPoints.getExtensionPoint(JavascriptProxyFactoryExtensionPoint.class);
+    }
+    
+    public QName getQName() {
+        return NAME;
+    }
+
+    public void generateJavaScriptCode(RuntimeComponent component, PrintWriter pw) throws IOException {
+        pw.println();
+        pw.println("/* Apache Tuscany SCA Widget header */");
+        pw.println();
+
+        Map<String, Boolean> bindingClientProcessed = new HashMap<String, Boolean>();
+
+        for(ComponentReference reference : component.getReferences()) {
+            for(Binding binding : reference.getBindings()) {
+                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(bindingProxyName != null) {
+                    Boolean processedFlag = bindingClientProcessed.get(bindingProxyName);
+                    if( processedFlag == null || processedFlag.booleanValue() == false) {
+                        generateJavaScriptBindingProxy(jsProxyFactory, pw);
+                        bindingClientProcessed.put(bindingProxyName, Boolean.TRUE);
+                    }
+                }
+
+            }
+        }
+        
+        //pw.println("dojo.require(\"/dojo.rpc.JsonService\");");
+        //pw.println("dojo.require(\"/tuscany.AtomService\");");
+
+        pw.println();
+        pw.println("/* Tuscany Reference/Property injection code */");
+        pw.println();
+
+        
+        //define tuscany.sca namespace
+        generateJavaScriptNamespace(pw);
+
+        pw.println();
+
+        //process properties
+        generateJavaScriptPropertyFunction(component, pw);
+
+        pw.println();
+
+        //process references
+        generateJavaScriptReferenceFunction(component, javascriptProxyFactories,pw);
+
+
+        pw.println();
+        pw.println("/** End of Apache Tuscany SCA Widget */");
+        pw.println();
+        pw.flush();
+        pw.close();
+    }
+
+
+    /**
+     * Retrieve the binding proxy based on the bind name
+     * and embedded the JavaScript into this js
+     */
+    private static void generateJavaScriptBindingProxy(JavascriptProxyFactory javascriptProxyFactory, PrintWriter pw) throws IOException {
+        InputStream is = javascriptProxyFactory.getJavascriptProxyFileAsStream();
+        if (is != null) {
+            int i;
+            while ((i = is.read()) != -1) {
+                pw.write(i);
+            }           
+        }
+        
+        pw.println();
+        pw.println();
+    }
+
+    /**
+     * Generate the tuscany.sca namespace if not yet available
+     * @param pw
+     * @throws IOException
+     */
+    private static void generateJavaScriptNamespace(PrintWriter pw) throws IOException {
+        pw.println("if (!tuscany) { \n" +
+                        "var tuscany = {}; \n" +
+                        "}");
+        pw.println("if (!tuscany.sca) { \n" +
+                        "tuscany.sca = {}; \n" +
+                        "}");
+    }
+   
+    /**
+     * Generate JavaScript code to inject SCA Properties
+     * @param pw
+     * @throws IOException
+     */
+    private static void generateJavaScriptPropertyFunction(RuntimeComponent component, PrintWriter pw) throws IOException {        
+        pw.println("tuscany.sca.propertyMap = new String();");
+        for(ComponentProperty property : component.getProperties()) {
+            String propertyName = property.getName();
+
+            pw.println("tuscany.sca.propertyMap." + propertyName + " = \"" + getPropertyValue(property) + "\"");
+        }
+        
+        pw.println("tuscany.sca.Property = function (name) {");
+        pw.println("    return tuscany.sca.propertyMap[name];");
+        pw.println("}");
+    }
+    
+    /**
+     * Convert property value to String
+     * @param property
+     * @return
+     */
+    private static String getPropertyValue(ComponentProperty property) {
+        Document doc = (Document)property.getValue();
+        Element rootElement = doc.getDocumentElement();
+
+        String value = null;
+
+        //FIXME : Provide support for isMany and other property types
+
+        if (rootElement.getChildNodes().getLength() > 0) {
+            value = rootElement.getChildNodes().item(0).getTextContent();
+        }
+
+        return value;
+    }
+
+
+    
+    /**
+     * Generate JavaScript code to inject SCA References
+     * @param pw
+     * @throws IOException
+     */
+    private static void generateJavaScriptReferenceFunction (RuntimeComponent component, JavascriptProxyFactoryExtensionPoint javascriptProxyFactories, PrintWriter pw) throws IOException {
+        
+        pw.println("tuscany.sca.referenceMap = new Object();");
+        for(ComponentReference reference : component.getReferences()) {
+            Binding binding = reference.getBindings().get(0);
+           
+            if (binding != null) {
+
+                String referenceName = reference.getName();
+                JavascriptProxyFactory jsProxyFactory = javascriptProxyFactories.getProxyFactory(binding.getClass());
+                
+                pw.println("tuscany.sca.referenceMap." + referenceName + " = new " + jsProxyFactory.createJavascriptReference(reference) + ";");
+                
+            }
+        }
+        
+        pw.println("tuscany.sca.Reference = function (name) {");
+        pw.println("    return tuscany.sca.referenceMap[name];");
+        pw.println("}");
+    }
+
+    
+}