/*

* Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Control for adjusting player priorities.

*

*/

package com.nokia.amms.control;

import com.nokia.microedition.media.NativeError;

import javax.microedition.media.Player;

/**

 * Control for adjusting player priorities.

 */

public class PriorityControl

        extends ControlImpl

        implements javax.microedition.amms.control.PriorityControl

{

    private static final int MIN_PRIORITY = 0;

    private static final int MAX_PRIORITY = 100;

    // The player owning this control.

    private Player iPlayer;

    /**

     * Constructor

     */

    public PriorityControl(Player aPlayer)

    {

        iPlayer = aPlayer;

    }

    /**

     * Please refer to JSR 234 for more details.

     */

    public void setPriority(int aPriority)

    {

        checkValid();

        int priority = aPriority;

        // Panning value that is out of range is set to the valid range.

        if (aPriority < MIN_PRIORITY ||

                aPriority > MAX_PRIORITY)

        {

            throw new IllegalArgumentException(

                "Priority must be between 0 and 100");

        }

        // Priority setting in native side returns a system wide error code.

        int error = _setPriority(iEventSource, iControlHandle, aPriority);

        NativeError.check(error);

    }

    /**

     * Please refer to JSR 234 for more details.

     */

    public int getPriority()

    {

        checkValid();

        int value = _getPriority(iEventSource, iControlHandle);

        return value;

    }

    public void checkValid()

    {

        super.checkValid();

        if (iPlayer.getState() == Player.CLOSED)

        {

            throw new IllegalStateException("Player is closed.");

        }

    }

    // native methods

    private static native int _setPriority(

        int aEventSource,

        int aControlHandle,

        int aPriority);

    private static native int _getPriority(

        int aEventSource,

        int aControlHandle);

}