/*

* Copyright (c) 2008 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:  Implementation class of GlobalIndicators API.

 *

*/

package com.nokia.mj.impl.globalindicators;

import com.nokia.mid.ui.GlobalIndicators;

import com.nokia.mid.ui.GlobalIndicatorsException;

import com.nokia.mj.impl.utils.OsErrorMessage;

import com.nokia.mj.impl.rt.support.ApplicationInfo;

public class GlobalIndicatorsImpl

{

    // Static instance, can be got with getInstace method

    private static GlobalIndicatorsImpl sGlobalIndicator;

    // Static block of the class.

    static

    {

        com.nokia.mj.impl.rt.support.Jvm.loadSystemLibrary("javaglobalindicators");

        // This is called when class is loaded for the first time

        sGlobalIndicator = new GlobalIndicatorsImpl();

    }

    /**

     * This private constructor can be called only from static block.

     */

    private GlobalIndicatorsImpl()

    {

    }

    /**

     * Return GlobalIndicatorsImpl instance

     */

    public static GlobalIndicatorsImpl getInstance()

    {

        return sGlobalIndicator;

    }

    /**

     * See class GlobalIndicators for comments

     */

    public int setGlobalIndicator(int aIndicator, int aValue)

    throws GlobalIndicatorsException

    {

        int ret;

        String protectionDomain = ApplicationInfo.getInstance().getProtectionDomain();

        if (protectionDomain == null)

        {

            throw new GlobalIndicatorsException(

                "Failed to set global indicator for unidentified domain");

        }

        else

        {

            // For mail and chat indicators only show and hide are supported

            if (((aIndicator == GlobalIndicators.MAIL_INDICATOR) ||

                    (aIndicator == GlobalIndicators.CHAT_INDICATOR)) &&

                    ((aValue != GlobalIndicators.INDICATOR_SHOW) &&

                     (aValue != GlobalIndicators.INDICATOR_HIDE)))

            {

                throw new GlobalIndicatorsException(

                    "Value is not supported for global indicator");

            }

            //int ret = _setGlobalIndicator( aIndicator, aValue );

            ret = _setGlobalIndicator(aIndicator, aValue);

            if (ret < OsErrorMessage.SUCCESS)

            {

                throw new GlobalIndicatorsException(

                    "Failed to set global indicator", ret);

            }

        }

        return ret;

    }

    /**

     * See class GlobalIndicators for comments

     */

    public int getGlobalIndicator(int aIndicator)

    throws GlobalIndicatorsException

    {

        int ret = _getGlobalIndicator(aIndicator);

        if (ret < OsErrorMessage.SUCCESS)

        {

            throw new GlobalIndicatorsException(

                "Failed to get global indicator value", ret);

        }

        return ret;

    }

    /**

     * Native methods.

     */

    private static native int _setGlobalIndicator(

        int aIndicator, int aValue);

    private static native int _getGlobalIndicator(

        int aIndicator);

}