/**
 * @license
 * Copyright (C) 2013 KO GmbH <copyright@kogmbh.com>
 *
 * @licstart
 * The JavaScript code in this page is free software: you can redistribute it
 * and/or modify it under the terms of the GNU Affero General Public License
 * (GNU AGPL) as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.  The code is distributed
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU AGPL for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this code.  If not, see <http://www.gnu.org/licenses/>.
 *
 * As additional permission under GNU AGPL version 3 section 7, you
 * may distribute non-source (e.g., minimized or compacted) forms of
 * that code without the copy of the GNU GPL normally required by
 * section 4, provided you include this license notice and a URL
 * through which recipients can access the Corresponding Source.
 *
 * As a special exception to the AGPL, any HTML file which merely makes function
 * calls to this code, and for that purpose includes it by reference shall be
 * deemed a separate work for copyright law purposes. In addition, the copyright
 * holders of this code give you permission to combine this code with free
 * software libraries that are released under the GNU LGPL. You may copy and
 * distribute such a system following the terms of the GNU AGPL for this code
 * and the LGPL for the libraries. If you modify this code, you may extend this
 * exception to your version of the code, but you are not obligated to do so.
 * If you do not wish to do so, delete this exception statement from your
 * version.
 *
 * This license applies to this entire compilation.
 * @licend
 * @source: http://www.webodf.org/
 * @source: https://github.com/kogmbh/WebODF/
 */

/*global define, require */

define("webodf/editor/widgets/annotation", [
    "dijit/form/Button"],

    function (Button) {
        "use strict";

        var AnnotationControl = function (callback) {
            var self = this,
                widget = {},
                addAnnotationButton,
                annotationController;


            addAnnotationButton = new Button({
                label: runtime.tr('Annotate'),
                disabled: true,
                showLabel: false,
                iconClass: 'dijitIconBookmark',
                onClick: function () {
                    if (annotationController) {
                        annotationController.addAnnotation();
                        self.onToolDone();
                    }
                }
            });

            widget.children = [addAnnotationButton];
            widget.startup = function () {
                widget.children.forEach(function (element) {
                    element.startup();
                });
            };

            widget.placeAt = function (container) {
                widget.children.forEach(function (element) {
                    element.placeAt(container);
                });
                return widget;
            };

            function onAnnotatableChanged(isAnnotatable) {
                addAnnotationButton.setAttribute('disabled', !isAnnotatable);
            }

            this.setEditorSession = function (session) {
                if (annotationController) {
                    annotationController.unsubscribe(gui.AnnotationController.annotatableChanged, onAnnotatableChanged);
                }
                annotationController = session && session.sessionController.getAnnotationController();
                if (annotationController) {
                    annotationController.subscribe(gui.AnnotationController.annotatableChanged, onAnnotatableChanged);
                }
                onAnnotatableChanged(annotationController && annotationController.isAnnotatable());
            };

            this.onToolDone = function () {};

            callback(widget);
        };

        return AnnotationControl;
    }
);
