/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Ajax.org Code Editor (ACE).
 *
 * The Initial Developer of the Original Code is
 * Ajax.org B.V.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *      Fabian Jakobs <fabian AT ajax DOT org>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

define(function(require, exports, module) {
"use strict";

var oop = require("../../lib/oop");
var BaseFoldMode = require("./fold_mode").FoldMode;
var Range = require("../../range").Range;

var FoldMode = exports.FoldMode = function(levels, flag) {
	this.regExpList = levels;
	this.flag = flag;
	this.foldingStartMarker = RegExp("^(" + levels.join("|") + ")", this.flag);
};
oop.inherits(FoldMode, BaseFoldMode);

(function() {
    this.getFoldWidgetRange = function(session, foldStyle, row) {
        var line = session.getLine(row);
        var start = {row: row, column: line.length};

        var regList = this.regExpList;
        for (var i = 1; i <= regList.length; i++) {
            var re = RegExp("^(" + regList.slice(0, i).join("|") + ")", this.flag);
            if (re.test(line))
                break;
        }

        for (var l = session.getLength(); ++row < l; ) {
            line = session.getLine(row);
            if (re.test(line))
                break
        }
		if (row == start.row + 1)
			return;
        return  Range.fromPoints(start, {row: row - 1, column: line.length});
    };

}).call(FoldMode.prototype);

});