/**
* Copyright 2014 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.addon.ui.impl.command;
import javax.enterprise.inject.Vetoed;
import javax.inject.Singleton;
import org.jboss.forge.addon.ui.command.AbstractUICommand;
import org.jboss.forge.addon.ui.command.PrerequisiteCommandsProvider;
import org.jboss.forge.addon.ui.command.UICommand;
import org.jboss.forge.addon.ui.command.UICommandTransformer;
import org.jboss.forge.addon.ui.context.UIBuilder;
import org.jboss.forge.addon.ui.context.UIContext;
import org.jboss.forge.addon.ui.context.UIExecutionContext;
import org.jboss.forge.addon.ui.context.UINavigationContext;
import org.jboss.forge.addon.ui.metadata.UICommandMetadata;
import org.jboss.forge.addon.ui.result.NavigationResult;
import org.jboss.forge.addon.ui.result.Result;
import org.jboss.forge.addon.ui.result.Results;
import org.jboss.forge.addon.ui.result.navigation.NavigationResultBuilder;
import org.jboss.forge.addon.ui.wizard.UIWizard;
/**
* Adds the Setup steps on {@link AbstractJavaEECommand}
*
* @author <a href="ggastald@redhat.com">George Gastaldi</a>
*/
@Singleton
public class PrerequisiteCommandTransformer implements UICommandTransformer
{
@Override
public UICommand transform(UIContext context, UICommand original)
{
final UICommand result;
if (original instanceof PrerequisiteCommandsProvider)
{
NavigationResult navigationResult = ((PrerequisiteCommandsProvider) original).getPrerequisiteCommands(context);
if (navigationResult == null || navigationResult.getNext().length == 0)
{
result = original;
}
else
{
NavigationResultBuilder builder = NavigationResultBuilder.create(navigationResult);
builder.add(original);
result = new DelegateWizard(original, builder.build());
}
}
else
{
result = original;
}
return result;
}
@Vetoed
private static class DelegateWizard extends AbstractUICommand implements UIWizard
{
private final UICommand originalCmd;
private final NavigationResult result;
DelegateWizard(UICommand originalCmd, NavigationResult result)
{
this.originalCmd = originalCmd;
this.result = result;
}
@Override
public UICommandMetadata getMetadata(UIContext context)
{
return originalCmd.getMetadata(context);
}
@Override
public NavigationResult next(UINavigationContext context) throws Exception
{
return result;
}
@Override
public Result execute(UIExecutionContext context) throws Exception
{
return Results.success();
}
@Override
public void initializeUI(UIBuilder builder) throws Exception
{
// no UI
}
}
}