// utility functions

var wpCookies = {

// The following functions are from Cookie.js class in TinyMCE, Moxiecode, used under LGPL.

	each : function(obj, cb, scope) {

		var n, l;

		if ( !obj )

			return 0;

		scope = scope || obj;

		if ( typeof(obj.length) != 'undefined' ) {

			for ( n = 0, l = obj.length; n < l; n++ ) {

				if ( cb.call(scope, obj[n], n, obj) === false )

					return 0;

			}

		} else {

			for ( n in obj ) {

				if ( obj.hasOwnProperty(n) ) {

					if ( cb.call(scope, obj[n], n, obj) === false ) {

						return 0;

					}

				}

			}

		}

		return 1;

	},

	/**

	 * Get a multi-values cookie.

	 * Returns a JS object with the name: 'value' pairs.

	 */

	getHash : function(name) {

		var all = this.get(name), ret;

		if ( all ) {

			this.each( all.split('&'), function(pair) {

				pair = pair.split('=');

				ret = ret || {};

				ret[pair[0]] = pair[1];

			});

		}

		return ret;

	},

	/**

	 * Set a multi-values cookie.

	 *

	 * 'values_obj' is the JS object that is stored. It is encoded as URI in wpCookies.set().

	 */

	setHash : function(name, values_obj, expires, path, domain, secure) {

		var str = '';

		this.each(values_obj, function(val, key) {

			str += (!str ? '' : '&') + key + '=' + val;

		});

		this.set(name, str, expires, path, domain, secure);

	},

	/**

	 * Get a cookie.

	 */

	get : function(name) {

		var cookie = document.cookie, e, p = name + "=", b;

		if ( !cookie )

			return;

		b = cookie.indexOf("; " + p);

		if ( b == -1 ) {

			b = cookie.indexOf(p);

			if ( b != 0 )

				return null;

		} else {

			b += 2;

		}

		e = cookie.indexOf(";", b);

		if ( e == -1 )

			e = cookie.length;

		return decodeURIComponent( cookie.substring(b + p.length, e) );

	},

	/**

	 * Set a cookie.

	 *

	 * The 'expires' arg can be either a JS Date() object set to the expiration date (back-compat)

	 * or the number of seconds until expiration

	 */

	set : function(name, value, expires, path, domain, secure) {

		var d = new Date();

		if ( typeof(expires) == 'object' && expires.toGMTString ) {

			expires = expires.toGMTString();

		} else if ( parseInt(expires, 10) ) {

			d.setTime( d.getTime() + ( parseInt(expires, 10) * 1000 ) ); // time must be in miliseconds

			expires = d.toGMTString();

		} else {

			expires = '';

		}

		document.cookie = name + "=" + encodeURIComponent(value) +

			((expires) ? "; expires=" + expires : "") +

			((path) ? "; path=" + path : "") +

			((domain) ? "; domain=" + domain : "") +

			((secure) ? "; secure" : "");

	},

	/**

	 * Remove a cookie.

	 *

	 * This is done by setting it to an empty value and setting the expiration time in the past.

	 */

	remove : function(name, path) {

		this.set(name, '', -1000, path);

	}

};

// Returns the value as string. Second arg or empty string is returned when value is not set.

function getUserSetting( name, def ) {

	var obj = getAllUserSettings();

	if ( obj.hasOwnProperty(name) )

		return obj[name];

	if ( typeof def != 'undefined' )

		return def;

	return '';

}

// Both name and value must be only ASCII letters, numbers or underscore

// and the shorter, the better (cookies can store maximum 4KB). Not suitable to store text.

function setUserSetting( name, value, _del ) {

	if ( 'object' !== typeof userSettings )

		return false;

	var cookie = 'wp-settings-' + userSettings.uid, all = wpCookies.getHash(cookie) || {}, path = userSettings.url,

	n = name.toString().replace(/[^A-Za-z0-9_]/, ''), v = value.toString().replace(/[^A-Za-z0-9_]/, '');

	if ( _del ) {

		delete all[n];

	} else {

		all[n] = v;

	}

	wpCookies.setHash(cookie, all, 31536000, path);

	wpCookies.set('wp-settings-time-'+userSettings.uid, userSettings.time, 31536000, path);

	return name;

}

function deleteUserSetting( name ) {

	return setUserSetting( name, '', 1 );

}

// Returns all settings as js object.

function getAllUserSettings() {

	if ( 'object' !== typeof userSettings )

		return {};

	return wpCookies.getHash('wp-settings-' + userSettings.uid) || {};

}