removed script inclusion in gwt.xml file and inject script via ScriptInjector. Processing can be used with xsiframe linker

Author: Uemit Seren

src/main/java/at/gmi/nordborglab/processingjs/client/Processing.java

@@ -1,11 +1,14 @@
 package at.gmi.nordborglab.processingjs.client;
 
 import com.google.gwt.canvas.client.Canvas;
+import com.google.gwt.core.client.ScriptInjector;
+import com.google.gwt.core.shared.GWT;
 import com.google.gwt.http.client.Request;
 import com.google.gwt.http.client.RequestBuilder;
 import com.google.gwt.http.client.RequestCallback;
 import com.google.gwt.http.client.RequestException;
 import com.google.gwt.http.client.Response;
+import com.google.gwt.resources.client.ClientBundle;
 import com.google.gwt.resources.client.ExternalTextResource;
 import com.google.gwt.resources.client.ResourceCallback;
 import com.google.gwt.resources.client.ResourceException;
@@ -16,6 +19,12 @@
 
 public class Processing <I extends ProcessingInstance> extends Widget  {
 
+	interface ProcessingClientBundle extends ClientBundle {
+		ProcessingClientBundle INSTANCE = GWT.create(ProcessingClientBundle.class);
+		
+		@Source("resources/processing.js")
+		TextResource processingjs();
+	}
 
 	protected String url;
 	protected I p_instance;
@@ -24,6 +33,7 @@ public class Processing <I extends ProcessingInstance> extends Widget  {
 
 	public Processing() {
 		super();
+		injectScript();
 		canvas = createElement();
 		setElement(canvas.getElement());
 	}
@@ -91,14 +101,26 @@ public boolean isLoaded()
 	protected native I init(String programm,Element elem) /*-{
 		
 		instance = new $wnd.Processing(elem,programm);
-		//$wnd.Processing.addInstance(instance);
 		return instance;
 	}-*/;
 
 
 	public Canvas getCanvas() {
 		return canvas;
 	}
+	
+	private void injectScript() {
+		if (!isInjected()) {
+			ScriptInjector.fromString(ProcessingClientBundle.INSTANCE.processingjs().getText()).setWindow(ScriptInjector.TOP_WINDOW).inject();
+		}
+	}
+
+	private native final boolean isInjected() /*-{
+		if (!(typeof $wnd.Processing === "undefined") && !(null===$wnd.Processing)) {
+            return true;
+        }
+        return false;
+	}-*/;
 }
 
 

src/main/resources/at/gmi/nordborglab/processingjs/Processing.gwt.xml

@@ -2,6 +2,5 @@
 <module rename-to='processing'>
    <inherits name='com.google.gwt.user.User'/>
    <source path='client'/>
-   <script src="processing.js"></script>  
 </module>