/*

 * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package javax.sound.sampled;

/**

 * A {@code CompoundControl}, such as a graphic equalizer, provides control over

 * two or more related properties, each of which is itself represented as a

 * {@code Control}.

 *

 * @author Kara Kytle

 * @since 1.3

 */

public abstract class CompoundControl extends Control {

    /**

     * The set of member controls.

     */

    private Control[] controls;

    /**

     * Constructs a new compound control object with the given parameters.

     *

     * @param  type the type of control represented this compound control object

     * @param  memberControls the set of member controls

     */

    protected CompoundControl(Type type, Control[] memberControls) {

        super(type);

        this.controls = memberControls;

    }

    /**

     * Returns the set of member controls that comprise the compound control.

     *

     * @return the set of member controls

     */

    public Control[] getMemberControls() {

        Control[] localArray = new Control[controls.length];

        for (int i = 0; i < controls.length; i++) {

            localArray[i] = controls[i];

        }

        return localArray;

    }

    /**

     * Provides a string representation of the control.

     *

     * @return a string description

     */

    @Override

    public String toString() {

        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < controls.length; i++) {

            if (i != 0) {

                sb.append(", ");

                if ((i + 1) == controls.length) {

                    sb.append("and ");

                }

            }

            sb.append(controls[i].getType());

        }

        return new String(getType() + " Control containing " + sb + " Controls.");

    }

    /**

     * An instance of the {@code CompoundControl.Type} inner class identifies

     * one kind of compound control. Static instances are provided for the

     * common types.

     *

     * @author Kara Kytle

     * @since 1.3

     */

    public static class Type extends Control.Type {

        /**

         * Constructs a new compound control type.

         *

         * @param  name the name of the new compound control type

         */

        protected Type(final String name) {

            super(name);

        }

    }

}