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/*
 * Copyright 2009 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.tasks;

import groovy.lang.Closure;
import org.gradle.api.Action;
import org.gradle.api.Task;
import org.gradle.api.UnknownDomainObjectException;
import org.gradle.api.UnknownTaskException;
import org.gradle.api.internal.DefaultNamedDomainObjectSet;
import org.gradle.api.internal.collections.CollectionFilter;
import org.gradle.api.internal.project.ProjectInternal;
import org.gradle.api.specs.Spec;
import org.gradle.api.specs.Specs;
import org.gradle.api.tasks.TaskCollection;
import org.gradle.internal.reflect.Instantiator;

public class DefaultTaskCollection extends DefaultNamedDomainObjectSet implements TaskCollection {
    private static final Task.Namer NAMER = new Task.Namer();

    protected final ProjectInternal project;

    public DefaultTaskCollection(Class type, Instantiator instantiator, ProjectInternal project) {
        super(type, instantiator, NAMER);
        this.project = project;
    }

    public DefaultTaskCollection(DefaultTaskCollection collection, CollectionFilter filter, Instantiator instantiator, ProjectInternal project) {
        super(collection, filter, instantiator, NAMER);
        this.project = project;
    }

    protected  DefaultTaskCollection filtered(CollectionFilter filter) {
        return getInstantiator().newInstance(DefaultTaskCollection.class, this, filter, getInstantiator(), project);
    }

    @Override
    public  TaskCollection withType(Class type) {
        return filtered(createFilter(type));
    }

    @Override
    public TaskCollection matching(Spec spec) {
        return filtered(createFilter(spec));
    }

    @Override
    public TaskCollection matching(Closure spec) {
        return matching(Specs.convertClosureToSpec(spec));
    }

    public Action whenTaskAdded(Action action) {
        return whenObjectAdded(action);
    }

    public void whenTaskAdded(Closure closure) {
        whenObjectAdded(closure);
    }

    @Override
    public String getTypeDisplayName() {
        return "task";
    }

    @Override
    protected UnknownDomainObjectException createNotFoundException(String name) {
        return new UnknownTaskException(String.format("Task with name '%s' not found in %s.", name, project));
    }
}