/*

* Copyright (c) 2010 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:

*

*/

package com.nokia.mj.impl.rt.legacy;

import javax.microedition.midlet.MIDlet;

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

/**

 * A class for porting legacy JSRs to new runtime.

 */

public class LegacyRtPort

{

    /**

     * A singleton instance.

     */

    private static LegacyRtPort mInstance = new LegacyRtPort();

    /**

     * The running MIDlet instance.

     */

    private MIDlet    mMidlet;

    /**

     * The registered UI toolkit.

     */

    private String    mRegisteredToolkit;

    /**

     * Contructor, allowed only for this class.

     */

    private LegacyRtPort()

    {

    }

    /**

     * Sets the running MIDlet.

     */

    static void setMidlet(MIDlet midlet)

    {

        mInstance.mMidlet = midlet;

    }

    /**

     * Gets the running MIDlet instance.

     */

    public static MIDlet getMidlet()

    {

        return mInstance.mMidlet;

    }

    /**

     * Gets the UID of the running MIDlet in int format.

     */

    public static int getMidletUid()

    {

        int midletUid = -1;

        try

        {

            String uidS = ApplicationInfo.getInstance().getUid().getStringValue();

            // In Symbian the UID is in format '[<uid>]' where <uid> is in hex

            // format. So wee need to take the brackets away.

            // Long is needed in conversion because UIDs greater than 0x80000000

            // would fail if Integer would be used. However typecast from long

            // to int is safe since UID in Symbian is 32 bit.

            long uidL = Long.parseLong(uidS.substring(1,uidS.length()-1), 16);

            return (int)uidL;

        }

        catch (Throwable t)

        {

        }

        return midletUid;

    }

    /**

     * Registers active UI toolkit. There can be only one active UI toolkit at the

     * same time.

     */

    public static void registerToolkit(String toolkitId)

    {

        if (mInstance.mRegisteredToolkit != null)

        {

            throw new RuntimeException("Could not register toolkit: " +

                                       toolkitId);

        }

        mInstance.mRegisteredToolkit = toolkitId;

    }

    /**

     * Unregisters the given UI toolkit.

     */

    public static void unRegisterToolkit(String toolkitId)

    {

        if (mInstance.mRegisteredToolkit != null &&

                mInstance.mRegisteredToolkit.equals(toolkitId))

        {

            mInstance.mRegisteredToolkit = null;

        }

    }

    /**

     * Gets the active UI toolkit.

     */

    public static String getRegisteredToolkit()

    {

        return mInstance.mRegisteredToolkit;

    }

    /**

     * Gets the ApplicationId.

     */

    public static Object getApplicationId()

    {

        return mInstance;

    }

}