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 * Copyright (c) 2010, Ajax.org B.V.
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 *       notice, this list of conditions and the following disclaimer.
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 *       documentation and/or other materials provided with the distribution.
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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define(function (require, exports, module) {
    "use strict";

    var oop = require("../lib/oop");
    var lang = require("../lib/lang");
    var TextMode = require("./text").Mode;
    var JavaScriptMode = require("./javascript").Mode;
    var CssMode = require("./css").Mode;
    var HtmlHighlightRules = require("./html_highlight_rules").HtmlHighlightRules;
    var XmlBehaviour = require("./behaviour/xml").XmlBehaviour;
    var HtmlFoldMode = require("./folding/html").FoldMode;
    var HtmlCompletions = require("./html_completions").HtmlCompletions;
    var WorkerClient = require("../worker/worker_client").WorkerClient;

// http://www.w3.org/TR/html5/syntax.html#void-elements
    var voidElements = ["area", "base", "br", "col", "embed", "hr", "img", "input", "keygen", "link", "meta", "menuitem", "param", "source", "track", "wbr"];
    var optionalEndTags = ["li", "dt", "dd", "p", "rt", "rp", "optgroup", "option", "colgroup", "td", "th"];

    var Mode = function (options) {
        this.fragmentContext = options && options.fragmentContext;
        this.HighlightRules = HtmlHighlightRules;
        this.$behaviour = new XmlBehaviour();
        this.$completer = new HtmlCompletions();

        this.createModeDelegates({
            "js-": JavaScriptMode,
            "css-": CssMode
        });

        this.foldingRules = new HtmlFoldMode(this.voidElements, lang.arrayToMap(optionalEndTags));
    };
    oop.inherits(Mode, TextMode);

    (function () {

        this.blockComment = {start: "<!--", end: "-->"};

        this.voidElements = lang.arrayToMap(voidElements);

        this.getNextLineIndent = function (state, line, tab) {
            return this.$getIndent(line);
        };

        this.checkOutdent = function (state, line, input) {
            return false;
        };

        this.getCompletions = function (state, session, pos, prefix) {
            return this.$completer.getCompletions(state, session, pos, prefix);
        };

        this.createWorker = function (session) {
            if (this.constructor != Mode)
                return;
            var worker = new WorkerClient(["ace"], "ace/mode/html_worker", "Worker");
            worker.attachToDocument(session.getDocument());

            if (this.fragmentContext)
                worker.call("setOptions", [{context: this.fragmentContext}]);

            worker.on("error", function (e) {
                session.setAnnotations(e.data);
            });

            worker.on("terminate", function () {
                session.clearAnnotations();
            });

            return worker;
        };

        this.$id = "ace/mode/html";
    }).call(Mode.prototype);

    exports.Mode = Mode;
});
