/*

* 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.utils;

import java.util.Calendar;

import java.util.Date;

import java.util.Vector;

/**

 * Formatter for Qt based platform.

 * @see Formatter

 */

class FormatterQt extends Formatter

{

    /** ResourceLoader to be used with this Formatter. */

    private ResourceLoaderQt iResourceLoader = null;

    /** Original text id. */

    private String iTextId = null;

    /** Number indicating plurality set with argn() method. */

    private int iArgN = -1;

    /** Text parameters set with arg() methods. */

    private Vector iArgs = new Vector();

    /*** ----------------------------- PUBLIC ------------------------------ */

    /**

     * Set the plurality for this Formatter.

     *

     * @param n number indicating plurality

     * @return same formatter

     */

    public Formatter argn(int n)

    {

        iArgN = n;

        return this;

    }

    /**

     * Replace the lowest numbered parameter in the string, which is not yet

     * replaced.

     *

     * @param string string to replace at the argument

     * @return same formatter

     */

    public Formatter arg(String string)

    {

        iArgs.addElement(string);

        return this;

    }

    /**

     * Replace the least numbered parameter in the string, which is not yet

     * replaced.

     *

     * @param number number to replace at the argument

     * @return same formatter

     */

    public Formatter arg(int number)

    {

        iArgs.addElement(new Integer(number));

        return this;

    }

    /**

     * Replace the least numbered parameter in the string, which is not yet

     * replaced.

     *

     * @param ch character to replace at the argument

     * @return same formatter

     */

    public Formatter arg(char ch)

    {

        iArgs.addElement(new Character(ch));

        return this;

    }

    /**

     * Replace the least numbered parameter in the string, which is not yet

     * replaced. Date is formatted according to current device date format.

     *

     * @param date date to replace at the argument

     * @return same formatter

     */

    public Formatter arg(Date date)

    {

        Calendar cal = Calendar.getInstance();

        cal.setTime(date);

        iArgs.addElement(cal);

        return this;

    }

    /**

     * Convert the current pattern to string, along with parameter

     * replacements.

     *

     * @return string where parameters are replaced

     */

    public String toString()

    {

        // Fetch localized text from iResourceLoader.

        String result = iResourceLoader.string(iTextId, iArgN);

        // Replace text parameters.

        Object[] args = new Object[iArgs.size()];

        for (int i = 0; i < iArgs.size(); i++)

        {

            args[i] = iArgs.elementAt(i);

        }

        result = _formatParameters(result, args);

        // Reset for next usage.

        iArgN = -1;

        iArgs.removeAllElements();

        return result;

    }

    /**

     * Applies conversion from european digits into arabic-indic digits

     * based on existing language settings

     *

     * @param str String which might contain european digits

     * @return A string identical with the provided string but with the

     *         european digits (if any) converted to arabic-indic digits

     */

    public static String formatDigits(String str)

    {

        return str;

    }

    /*** ----------------------------- PROTECTED -------------------------- */

    /**

     * Default constructor.

     */

    protected FormatterQt()

    {

        this(null, "");

    }

    /**

     * Create a new formatter

     *

     * @param aResourceLoader ResourceLoader to be used with this Formatter

     * @param aTextId text id

     */

    protected FormatterQt(ResourceLoaderQt aResourceLoader, String aTextId)

    {

        iResourceLoader = aResourceLoader;

        iTextId = aTextId;

    }

    /*** ----------------------------- PRIVATE ---------------------------- */

    /*** ----------------------------- NATIVE ----------------------------- */

    /**

     * Formats given parameters to given text.

     *

     * @param aText text to be formatted

     * @param aArgs text parameters

     * @return formatted text

     */

    private static native String _formatParameters(String aText, Object[] aArgs);

    /**

     * Applies conversion from european digits into arabic-indic digits

     * based on existing language settings

     *

     * @param str String which might contain european digits

     * @return A string identical with the provided string but with the

     *         european digits (if any) converted to arabic-indic digits

     */

    private static native String _formatDigits(String str);

}