/*
 * Copyright 2016 the original author or authors.
 *
 * 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.gradle.api.internal.artifacts.transform;

import com.google.common.collect.Lists;
import org.gradle.api.artifacts.transform.ArtifactTransformTargets;
import org.gradle.api.attributes.AttributeContainer;
import org.gradle.api.internal.attributes.AttributeContainerInternal;
import org.gradle.api.internal.attributes.DefaultMutableAttributeContainer;
import org.gradle.api.internal.attributes.ImmutableAttributesFactory;

import java.util.List;

public class DefaultArtifactTransformTargets implements ArtifactTransformTargets {

    private final ImmutableAttributesFactory attributesFactory;

    private List<AttributeContainerInternal> newTargets;

    public DefaultArtifactTransformTargets(ImmutableAttributesFactory attributesFactory) {
        this.attributesFactory = attributesFactory;
    }

    public AttributeContainer newTarget() {
        AttributeContainerInternal to = new DefaultMutableAttributeContainer(attributesFactory);
        if (newTargets == null) {
            newTargets = Lists.newArrayList();
        }
        newTargets.add(to);
        return to;
    }

    public List<AttributeContainerInternal> getNewTargets() {
        return newTargets;
    }
}
