/*
* Copyright 2009 Google Inc.
*
* 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 com.google.gwt.inject.rebind.binding;
import com.google.gwt.inject.client.Ginjector;
import com.google.gwt.inject.rebind.GinjectorInterfaceType;
import com.google.gwt.inject.rebind.reflect.NoSourceNameException;
import com.google.gwt.inject.rebind.reflect.ReflectUtil;
import com.google.gwt.inject.rebind.util.InjectorMethod;
import com.google.gwt.inject.rebind.util.NameGenerator;
import com.google.gwt.inject.rebind.util.SourceSnippet;
import com.google.gwt.inject.rebind.util.SourceSnippetBuilder;
import com.google.gwt.inject.rebind.util.SourceSnippets;
import com.google.inject.Inject;
import com.google.inject.Key;
import com.google.inject.TypeLiteral;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
/**
* Simple binding that allows injection of the ginjector.
*/
public class GinjectorBinding extends AbstractBinding implements Binding {
private final Class<? extends Ginjector> ginjectorInterface;
@Inject
public GinjectorBinding(@GinjectorInterfaceType Class<? extends Ginjector> ginjectorInterface) {
// This message is used to generate double-binding errors. We output a very
// specific message, because people were confused and tried to bind their
// Ginjectors manually.
//
// TODO(dburrows): probably it's better to explicitly error if the user
// manually binds the ginjector, instead of relying on the double-binding
// check to catch it.
super(Context.format("Automatic binding for %s; you should not need to bind this manually.",
ginjectorInterface), TypeLiteral.get(ginjectorInterface));
this.ginjectorInterface = ginjectorInterface;
}
public SourceSnippet getCreationStatements(NameGenerator nameGenerator,
List<InjectorMethod> methodsOutput) throws NoSourceNameException {
String type = ReflectUtil.getSourceName(ginjectorInterface);
return new SourceSnippetBuilder()
.append(type).append(" result = ").append(SourceSnippets.callGinjectorInterfaceGetter())
.append(";")
.build();
}
public Collection<Dependency> getDependencies() {
return Collections.singletonList(
new Dependency(Dependency.GINJECTOR, Key.get(ginjectorInterface),
"Automatic binding for %s", ginjectorInterface));
}
}