/* --------------------------------------------------------------
 disable_ckedit.js 2016-09-09
 Gambio GmbH
 http://www.gambio.de
 Copyright (c) 2016 Gambio GmbH
 Released under the GNU General Public License (Version 2)
 [http://www.gnu.org/licenses/gpl-2.0.html]
 --------------------------------------------------------------
 */

/**
 * ## Disable CKEdit
 *
 * Extension to enable or disable (readonly) CKEditors corresponding to a checkbox value.
 *
 * **Important: This widget is not used anymore and will be removed in the future.**
 *
 * @deprecated Since v1.5 will be removed in v1.7
 *
 * @module Admin/Extensions/disable_ckedit
 * @ignore
 */
gx.extensions.module(
    'disable_ckedit',

    [],

    function (data) {

        'use strict';

        // ------------------------------------------------------------------------
        // VARIABLE INITIALIZATION
        // ------------------------------------------------------------------------

        var
            /**
             * Extension Reference
             *
             * @type {object}
             */
            $this = $(this),

            /**
             * Default Options for Extension
             *
             * @type {object}
             */
            defaults = {
                'invert': false // if true, the checkbox has to be deselected to enable the ckeditor
            },

            /**
             * Final Extension Options
             *
             * @type {object}
             */
            options = $.extend(true, {}, defaults, data),

            /**
             * Module Object
             *
             * @type {object}
             */
            module = {},

            /**
             * Interval
             *
             * @type {number}
             */
            interval = null;

        // ------------------------------------------------------------------------
        // EVENT HANDLER
        // ------------------------------------------------------------------------

        /**
         * Switch CKEdit
         *
         * Function to detect if a CKEdit is bound to the target text field. If so,
         * set the readonly state of the box corresponding to the checkbox value.
         */
        var _switchCkEdit = function () {
            if (window.CKEDITOR && CKEDITOR.instances && CKEDITOR.instances[options.target]) {

                if (interval) {
                    clearInterval(interval);
                }

                var checked = $this.prop('checked');
                checked = (options.invert) ? !checked : checked;
                try {
                    CKEDITOR.instances[options.target].setReadOnly(!checked);
                } catch (err) {
                    interval = setInterval(function () {
                        CKEDITOR.instances[options.target].setReadOnly(!checked);
                        clearInterval(interval);
                    }, 100);
                }

            }
        };

        // ------------------------------------------------------------------------
        // INITIALIZATION
        // ------------------------------------------------------------------------

        /**
         * Initialize function of the extension, called by the engine.
         */
        module.init = function (done) {
            $this.on('change', _switchCkEdit);
            _switchCkEdit();
            done();
        };

        // Return data to module engine.
        return module;

    });