GWT Generator conflicts with GIN in production mode? - gwt

Question

Could you please help me to solve my problem with GWT Generator? Let me explain.
I wish to generate a widget (ListBox with pre-defined values) during the compilation time and I use GWT Generator for that. My solution works as expected in DevMode (when I run the project with mvn gwt:run) and I see the generated listbox on the screen. But when I compile the code and run it in the "Production mode" (using command mvn clean gwt:compile jetty:run-war) I see the dumb listbox with only one item "no-value" instead.
I have one idea about the issue reason. I use GIN in my project. Despite the fact, that I substitute my empty listbox with generated one using Deferred Binding but not GIN Injection, it probably somehow prevents the substitution during the runtime. I tried my listbox on an empty testing project - everything worked as desired in both Dev Mode and Production Mode. But it fails on my working project.
Here is my realisation:
package com.test.generated;
import com.google.gwt.user.client.ui.IsWidget;
public interface IMySelectBox extends IsWidget {}
My empty selectbox:
package com.test.generated;
import com.google.gwt.user.client.ui.ListBox;
/**
* <p>Dumb listbox. It should be replaced with generated file.</p>
*
*/
public class MySelectBox implements IMySelectBox {
#Override
public ListBox asWidget() {
ListBox listBox = new ListBox();
listBox.addItem("no-value","no-value");
return listBox;
}
}
My Generator:
package com.test.generated;
import java.io.PrintWriter;
import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.NotFoundException;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;
/**
* Generates the ListBox and populates it
*
*/
public class SelectBoxGenerator extends Generator {
/**
* {#inheritDoc}
*/
#Override
public String generate(TreeLogger logger, GeneratorContext context, String typeName) throws UnableToCompleteException {
try {
JClassType classType = context.getTypeOracle().getType(typeName);
return this.getSourceWriter(classType, context, logger);
} catch (NotFoundException e) {
e.printStackTrace();
}
return null;
}
/**
* Generates the source code of the List box.
*/
private String getSourceWriter(JClassType classType, GeneratorContext context, TreeLogger logger) {
final String packageName = classType.getPackage().getName();
final String className = classType.getSimpleSourceName() + "GeneratedImpl";
PrintWriter printWriter = context.tryCreate(logger, packageName, className);
if (printWriter == null) {
// source code has already been generated, abort
return null;
}
ClassSourceFileComposerFactory composer = new ClassSourceFileComposerFactory(packageName, className);
// Extends
composer.setSuperclass(classType.getName());
// Implements interface IMySelectBox
composer.addImplementedInterface(IMySelectBox.class.getSimpleName());
// Imports
composer.addImport(ListBox.class.getName());
// Class body
SourceWriter src = composer.createSourceWriter(context, printWriter);
src.println("#Override");
src.println("public ListBox asWidget() {");
src.println("ListBox sb = new ListBox();");
// ...here I generate values for the selectbox during compilation time.
src.println("return sb;");
src.println("}");
src.commit(logger);
System.out.println("Generating for: " + className);
// return the fully qualifed name of the generated class
return packageName + "." + className;
}
}
This is how I declare the substitution in my module.gwt.xml file:
<generate-with class="com.test.generated.SelectBoxGenerator">
<when-type-assignable class="com.test.generated.IMySelectBox" />
</generate-with>
And I use my generated ListBox as usually:
IMySelectBox mySelectBox = GWT.create(MySelectBox.class);
anyPanel.add(mySelectBox);
As you can see, I don't touch GIN stuff here at all. I use GIN to inject my modules and views. I found Issue 95 in GIN website, probably it is related to my case.
I will be really glad to get any help. Any explanations, hints, workarounds, suggestions are welcome!
Thank you very much in advance!