/*

YUI 3.10.3 (build 2fb5187)

Copyright 2013 Yahoo! Inc. All rights reserved.

Licensed under the BSD License.

http://yuilibrary.com/license/

*/

YUI.add('widget-locale', function (Y, NAME) {

/**

 * Provides string support for widget with BCP 47 language tag lookup. This module has been deprecated.

 * It's replaced by the "intl" module which provides generic internationalization and BCP 47 language tag

 * support with externalization.

 *

 * @module widget-locale

 * @deprecated This module has been deprecated. It's replaced by the "intl" module which provides

 * generic internationalization and BCP 47 language tag support with externalization.

 */

var TRUE = true,

    LOCALE = "locale",

    INIT_VALUE = "initValue",

    HYPHEN = "-",

    EMPTY_STR = "",

    Widget = Y.Widget;

/**

 * @attribute locale

 * @deprecated Use Y.config.lang and Y.Intl externalization support

 * @description

 * The default locale for the widget. NOTE: Using get/set on the "strings" attribute will

 * return/set strings for this locale.

 * @default "en"

 * @type String

 */

Widget.ATTRS[LOCALE] = {

    value: "en"

};

// Since strings support with locale needs the private _strs setup

Widget.ATTRS.strings.lazyAdd = false;

Y.mix(Widget.prototype, {

    /**

     * Sets strings for a particular locale, merging with any existing

     * strings which may already be defined for the locale.

     *

     * @method _setStrings

     * @protected

     * @param {Object} strings The hash of string key/values to set

     * @param {Object} locale The locale for the string values being set

     */

    _setStrings : function(strings, locale) {

        var strs = this._strs;

        locale = locale.toLowerCase();

        if (!strs[locale]) {

            strs[locale] = {};

        }

        Y.aggregate(strs[locale], strings, TRUE);

        return strs[locale];

    },

    /**

     * Returns the strings key/value hash for a paricular locale, without locale lookup applied.

     *

     * @method _getStrings

     * @protected

     * @param {Object} locale

     */

    _getStrings : function(locale) {

        return this._strs[locale.toLowerCase()];

    },

    /**

     * Gets the entire strings hash for a particular locale, performing locale lookup.

     * <p>

     * If no values of the key are defined for a particular locale the value for the

     * default locale (in initial locale set for the class) is returned.

     * </p>

     * @method getStrings

     * @param {String} locale (optional) The locale for which the string value is required. Defaults to the current locale, if not provided.

     */

    // TODO: Optimize/Cache. Clear cache on _setStrings call.

    getStrings : function(locale) {

        locale = (locale || this.get(LOCALE)).toLowerCase();

        var defLocale = this.getDefaultLocale().toLowerCase(),

            defStrs = this._getStrings(defLocale),

            strs = (defStrs) ? Y.merge(defStrs) : {},

            localeSegments = locale.split(HYPHEN),

            localeStrs,

            i, l,

            lookup;

        // If locale is different than the default, or needs lookup support

        if (locale !== defLocale || localeSegments.length > 1) {

            lookup = EMPTY_STR;

            for (i = 0, l = localeSegments.length; i < l; ++i) {

                lookup += localeSegments[i];

                localeStrs = this._getStrings(lookup);

                if (localeStrs) {

                    Y.aggregate(strs, localeStrs, TRUE);

                }

                lookup += HYPHEN;

            }

        }

        return strs;

    },

    /**

     * Gets the string for a particular key, for a particular locale, performing locale lookup.

     * <p>

     * If no values if defined for the key, for the given locale, the value for the

     * default locale (in initial locale set for the class) is returned.

     * </p>

     * @method getString

     * @param {String} key The key.

     * @param {String} locale (optional) The locale for which the string value is required. Defaults to the current locale, if not provided.

     */

    getString : function(key, locale) {

        locale = (locale || this.get(LOCALE)).toLowerCase();

        var defLocale = (this.getDefaultLocale()).toLowerCase(),

            strs = this._getStrings(defLocale) || {},

            str = strs[key],

            idx = locale.lastIndexOf(HYPHEN);

        // If locale is different than the default, or needs lookup support

        if (locale !== defLocale || idx != -1) {

            do {

                strs = this._getStrings(locale);

                if (strs && key in strs) {

                    str = strs[key];

                    break;

                }

                idx = locale.lastIndexOf(HYPHEN);

                // Chop of last locale segment

                if (idx != -1) {

                    locale = locale.substring(0, idx);

                }

            } while (idx != -1);

        }

        return str;

    },

    /**

     * Returns the default locale for the widget (the locale value defined by the

     * widget class, or provided by the user during construction).

     *

     * @method getDefaultLocale

     * @return {String} The default locale for the widget

     */

    getDefaultLocale : function() {

        return this._state.get(LOCALE, INIT_VALUE);

    },

    _strSetter : function(val) {

        return this._setStrings(val, this.get(LOCALE));

    },

    _strGetter : function(val) {

        return this._getStrings(this.get(LOCALE));

    }

}, true);

}, '3.10.3', {"requires": ["widget-base"]});