/* ***** 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
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/**
 * The main class required to set up an Ace instance in the browser.
 *
 * @class Ace
 **/

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

require("./lib/fixoldbrowsers");

var dom = require("./lib/dom");
var event = require("./lib/event");

var Editor = require("./editor").Editor;
var EditSession = require("./edit_session").EditSession;
var UndoManager = require("./undomanager").UndoManager;
var Renderer = require("./virtual_renderer").VirtualRenderer;
var MultiSelect = require("./multi_select").MultiSelect;

// The following require()s are for inclusion in the built ace file
require("./worker/worker_client");
require("./keyboard/hash_handler");
require("./placeholder");
require("./mode/folding/fold_mode");
require("./theme/textmate");

exports.config = require("./config");

/**
 * Provides access to require in packed noconflict mode
 * @param {String} moduleName
 * @returns {Object}
 *
 **/
exports.require = require;

/**
 * Embeds the Ace editor into the DOM, at the element provided by `el`.
 * @param {String | DOMElement} el Either the id of an element, or the element itself
 *
 **/
exports.edit = function(el) {
    if (typeof(el) == "string") {
        var _id = el;
        var el = document.getElementById(_id);
        if (!el)
            throw new Error("ace.edit can't find div #" + _id);
    }

    if (el.env && el.env.editor instanceof Editor)
        return el.env.editor;

    var doc = exports.createEditSession(dom.getInnerText(el));
    el.innerHTML = '';

    var editor = new Editor(new Renderer(el));
    new MultiSelect(editor);
    editor.setSession(doc);

    var env = {
        document: doc,
        editor: editor,
        onResize: editor.resize.bind(editor, null)
    };
    event.addListener(window, "resize", env.onResize);
    editor.on("destroy", function() {
        event.removeListener(window, "resize", env.onResize);
    });
    el.env = editor.env = env;
    return editor;
};

/**
 * Creates a new [[EditSession]], and returns the associated [[Document]].
 * @param {Document | String} text {:textParam}
 * @param {TextMode} mode {:modeParam}
 * 
 **/
exports.createEditSession = function(text, mode) {
    var doc = new EditSession(text, mode);
    doc.setUndoManager(new UndoManager());
    return doc;
}
exports.EditSession = EditSession;
exports.UndoManager = UndoManager;
});