/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Ajax.org B.V. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ***** END LICENSE BLOCK ***** */

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

var oop = require("../lib/oop");
var lang = require("../lib/lang");
var Mirror = require("../worker/mirror").Mirror;
var SAXParser = require("./html/saxparser").SAXParser;

var errorTypes = {
    "expected-doctype-but-got-start-tag": "info",
    "expected-doctype-but-got-chars": "info",
    "non-html-root": "info"
};

var Worker = exports.Worker = function(sender) {
    Mirror.call(this, sender);
    this.setTimeout(400);
    this.context = null;
};

oop.inherits(Worker, Mirror);

(function() {

    this.setOptions = function(options) {
        this.context = options.context;
    };

    this.onUpdate = function() {
        var value = this.doc.getValue();
        if (!value)
            return;
        var parser = new SAXParser();
        var errors = [];
        var noop = function(){};
        parser.contentHandler = {
           startDocument: noop,
           endDocument: noop,
           startElement: noop,
           endElement: noop,
           characters: noop
        };
        parser.errorHandler = {
            error: function(message, location, code) {
                errors.push({
                    row: location.line,
                    column: location.column,
                    text: message,
                    type: errorTypes[code] || "error"
                });
            }
        };
        if (this.context)
            parser.parseFragment(value, this.context);
        else
            parser.parse(value);
        this.sender.emit("error", errors);
    };

}).call(Worker.prototype);

});