/*
 * Copyright (c) 2014-2015, Wanadev <http://www.wanadev.fr/>
 * 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 Wanadev 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
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authored by: Fabien LOISON <http://flozz.fr/>
 */

/**
 * PhotonUI - Javascript Web User Interface.
 *
 * @module PhotonUI
 * @submodule Container
 * @namespace photonui
 */

var BaseWindow = require("./basewindow.js");

/**
 * Popup Window.
 *
 * @class PopupWindow
 * @constructor
 * @extends photonui.BaseWindow
 */
var PopupWindow = BaseWindow.$extend({

    // Constructor
    __init__: function (params) {
        this.$super(params);
        this._bindEvent("document-mousedown-close", document, "mousedown", this.hide.bind(this));
        this._bindEvent("popup-click-close", this.html, "click", this.hide.bind(this));
        this._bindEvent("mousedown-preventclose", this.html, "mousedown", function (event) {
            event.stopPropagation();
        }.bind(this));
    },

    /**
     * HTML Element that contain the child widget HTML.
     *
     * @property containerNode
     * @type HTMLElement
     * @readOnly
     */
    getContainerNode: function () {
        return this.__html.inner;
    },

    //////////////////////////////////////////
    // Methods                              //
    //////////////////////////////////////////

    // ====== Public methods ======

    /**
     * Pop the window at the given position.
     *
     * @method popupXY
     * @param {Number} x
     * @param {Number} y
     */
    popupXY: function (x, y) {
        this.setPosition(-1337, -1337);
        this.show();

        var bw = document.getElementsByTagName("body")[0].offsetWidth;
        var bh = document.getElementsByTagName("body")[0].offsetHeight;
        var pw = this.offsetWidth;
        var ph = this.offsetHeight;

        if (x + pw > bw) {
            x = bw - pw;
        }

        if (y + ph > bh) {
            y -= ph;
        }

        if (x < 0) {
            x = 0;
        }
        if (y < 0) {
            y = 0;
        }

        this.setPosition(x, y);
    },

    /**
     * Pop the window at the best position for the given widget.
     *
     * @method popupWidget
     * @param {photonui.Widget} widget
     */
    popupWidget: function (widget) {
        this.setPosition(-1337, -1337);
        this.show();

        var e_body = document.getElementsByTagName("body")[0];
        var x = 0;
        var y = 0;
        var wpos = widget.absolutePosition;
        var wh = widget.offsetHeight;
        var ww = widget.offsetWidth;
        var pw = this.offsetWidth;
        var ph = this.offsetHeight;

        if (wpos.x + pw < e_body.offsetWidth) {
            x = wpos.x;
        } else if (wpos.x + ww < e_body.offsetWidth) {
            x = wpos.x + ww - pw;
        } else {
            x = e_body.offsetWidth - pw;
        }

        if (wpos.y + wh + ph < e_body.offsetHeight) {
            y = wpos.y + wh + 1;
        } else if (wpos.y - ph >= 0) {
            y = wpos.y - ph - 1;
        }

        if (x < 0) {
            x = 0;
        }
        if (y < 0) {
            y = 0;
        }

        this.setPosition(x, y);
    },

    // ====== Private methods ======

    /**
     * Build the widget HTML.
     *
     * @method _buildHtml
     * @private
     */
    _buildHtml: function () {
        this.$super();
        this.__html.window.className += " photonui-popupwindow";

        this.__html.inner = document.createElement("div");
        this.__html.window.appendChild(this.__html.inner);
    }
});

module.exports = PopupWindow;