AfterInitializationExtension.java example

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/*
 * Copyright (C) 2011 Red Hat, Inc. and/or its affiliates.
 *
 * 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.
 */

package org.jboss.errai.ioc.rebind.ioc.builtin;

import java.util.Collections;

import org.jboss.errai.codegen.Statement;
import org.jboss.errai.codegen.util.Stmt;
import org.jboss.errai.common.client.api.extension.InitVotes;
import org.jboss.errai.ioc.client.api.AfterInitialization;
import org.jboss.errai.ioc.client.api.CodeDecorator;
import org.jboss.errai.ioc.rebind.ioc.extension.IOCDecoratorExtension;
import org.jboss.errai.ioc.rebind.ioc.injector.api.Decorable;
import org.jboss.errai.ioc.rebind.ioc.injector.api.FactoryController;

/**
 * @author Mike Brock
 */
@CodeDecorator
public class AfterInitializationExtension extends IOCDecoratorExtension<AfterInitialization> {
  public AfterInitializationExtension(Class<AfterInitialization> decoratesWith) {
    super(decoratesWith);
  }

  @Override
  public void generateDecorator(final Decorable decorable, final FactoryController controller) {
    final Statement callbackStmt = Stmt.newObject(Runnable.class).extend()
            .publicOverridesMethod("run")
            .append(decorable.getAccessStatement())
            .finish()
            .finish();

    controller.addInitializationStatements(Collections.<Statement>singletonList(Stmt.invokeStatic(InitVotes.class, "registerOneTimeInitCallback", callbackStmt)));
  }
}