yahoo/hodman

// Copyright 2014-2015, Yahoo! Inc.
// Copyrights licensed under the Mit License. See the accompanying LICENSE file for terms.

var ViewObject = require('./viewObject');

/**
 * @class PanelObject
 * @extends ViewObject
 */
var PanelObject = ViewObject.extend(

    /**
     * Panel-object constructor
     *
     * @constructor
     * @param {Element} [root]
     * @param {int} [timeOut]
     * @param {int} [waitInMs]
     */
    function (root, timeOut, waitInMs) {
        this.__super(root, timeOut, waitInMs);
    },

    {
        /**
         * Initializes the panel-object
         *
         * @method initialize
         */
        initialize: function () {
            this._context = this._getPanelRootElement(this.getContext(), this._timeOut, this._waitInMs);
            this.__super();
        },

        /**
         * Gets the root element of the panel-object
         *
         * @method _getPanelRootElement
         * @param {Element} context
         * @param {int} [timeOut]
         * @param {int} [waitInMs]
         * @return {Element}
         * @private
         */
        _getPanelRootElement: function (context, timeOut, waitInMs) {
            var selector = this.constructor.SELECTOR,
                elements;

            context = context || this.getAdapter().getPageContext();

            if (selector) {

                this.waitUntil(function () {
                    elements = context.getElements(selector);
                    return elements.length > 0;
                }, "Waited for root element with selector '" + selector + "'", timeOut, waitInMs);

                if (elements && elements.length === 1) {
                    return elements[0];

                } else if (elements && elements.length > 1) {
                    throw new Error("Panel-object selector is not specific enough. '" + selector + "'");

                } else {
                    throw new Error("Root element for panel-object could not be found. '" + selector + "'");
                }

            } else {
                return context;
            }
        }
    },

    {
        /**
         * @property TYPE
         * @type {string}
         * @static
         */
        TYPE: 'PanelObject',

        /**
         * Selector for panel object
         *
         * @property SELECTOR
         * @type {string}
         * @static
         */
        SELECTOR: undefined
    });

module.exports = PanelObject;