API Docs for: 1.8.0
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File: src/container/window.js

/*
 * 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 Stone = require("stonejs");
var Helpers = require("../helpers.js");
var Widget = require("../widget.js");
var BaseWindow = require("./basewindow.js");

var _windowList = [];

/**
 * Window.
 *
 * wEvents:
 *
 *   * close-button-clicked:
 *      - description: called when the close button was clicked.
 *      - callback:    function(widget)
 *
 * @class Window
 * @constructor
 * @extends photonui.BaseWindow
 */
var Window = BaseWindow.$extend({  // jshint ignore:line

    // Constructor
    __init__: function (params) {
        this._registerWEvents(["close-button-clicked"]);
        this.$super(params);

        // Bind js events
        this._bindEvent("move.dragstart", this.__html.windowTitle, "mousedown", this.__moveDragStart.bind(this));
        this._bindEvent("move.touchstart", this.__html.windowTitle, "touchstart", this.__moveTouchStart.bind(this));

        this._bindEvent("closeButton.click", this.__html.windowTitleCloseButton, "click",
                        this.__closeButtonClicked.bind(this));
        this._bindEvent("totop", this.__html.window, "mousedown", this.moveToFront.bind(this));
        this._bindEvent("totop-touch", this.__html.window, "touchstart", this.moveToFront.bind(this));

        // Update Properties
        this.moveToFront();
    },

    //////////////////////////////////////////
    // Properties and Accessors             //
    //////////////////////////////////////////

    // ====== Public properties ======

    /**
     * The window title.
     *
     * @property title
     * @type String
     * @default "Window"
     */
    _title: "Window",

    getTitle: function () {
        "@photonui-update";
        return this._title;
    },

    setTitle: function (title) {
        this._title = title;
        Helpers.cleanNode(this.__html.windowTitleText);
        this.__html.windowTitleText.appendChild(document.createTextNode(title));
    },

    /**
     * Determine if the window can be moved (drag & drop) by the user.
     *
     * @property movable
     * @type Boolean
     * @default true
     */
    _movable: true,

    isMovable: function () {
        return this._movable && (!this._fullscreen);
    },

    setMovable: function (movable) {
        this._movable = movable;
    },

    /**
     * Fullscreen Window
     *
     * @property fullscreen
     * @type Boolean
     * @default false
     */
    _fullscreen: false,

    isFullscreen: function () {
        return this._fullscreen;
    },

    setFullscreen: function (fullscreen) {
        this._fullscreen = Boolean(fullscreen);
        if (this._fullscreen) {
            this.addClass("photonui-window-fullscreen");
        } else {
            this.removeClass("photonui-window-fullscreen");
        }
    },

    /**
     * Determine if the close button in the title bar is displayed or not.
     *
     * @property closeButtonVisible
     * @type Boolean
     * default: true
     */
    _closeButtonVisible: true,

    getCloseButtonVisible: function () {
        "@photonui-update";
        return this._closeButtonVisible;
    },

    setCloseButtonVisible: function (closeButtonVisible) {
        this._closeButtonVisible = closeButtonVisible;

        if (closeButtonVisible) {
            this.addClass("photonui-window-have-button");
            this.__html.windowTitleCloseButton.style.display = "block";
        } else {
            this.removeClass("photonui-window-have-button");
            this.__html.windowTitleCloseButton.style.display = "none";
        }
    },

    /**
     * Modal window?
     *
     * @property modal
     * @type Boolean
     * @default false
     */
    _modal: false,

    isModal: function () {
        return this._modal;
    },

    setModal: function (modal) {
        this._modal = modal;
        if (modal && !this.__html.modalBox) {
            this.__html.modalBox = document.createElement("div");
            this.__html.modalBox.className = "photonui-window-modalbox";
            var parentNode = Widget.e_parent || document.getElementsByTagName("body")[0];
            parentNode.appendChild(this.__html.modalBox);
            this.visible = this.visible; // Force update
        } else if (!modal && this.__html.modalBox) {
            this.__html.modalBox.parentNode.removeChild(this.__html.modalBox);
            delete this.__html.modalBox;
        }
    },

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

    setVisible: function (visible) {
        this.$super(visible);
        if (this.visible) {
            this.moveToFront();
            if (this.modal) {
                this.__html.modalBox.style.display = "block";
            }
        } else {
            this.moveToBack();
            if (this.modal) {
                this.__html.modalBox.style.display = "none";
            }
        }
    },

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

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

    /**
     * Bring the window to front.
     *
     * @method moveToFront
     */
    moveToFront: function () {
        var index = _windowList.indexOf(this);
        if (index >= 0) {
            _windowList.splice(index, 1);
        }
        _windowList.unshift(this);
        this._updateWindowList();
    },

    /**
     * Bring the window to the back.
     *
     * @method moveToBack
     */
    moveToBack: function () {
        var index = _windowList.indexOf(this);
        if (index >= 0) {
            _windowList.splice(index, 1);
        }
        _windowList.push(this);
        this._updateWindowList();
    },

    /**
     * Destroy the widget.
     *
     * @method destroy
     */
    destroy: function () {
        this.modal = false;
        var index = _windowList.indexOf(this);
        if (index >= 0) {
            _windowList.splice(index, 1);
        }
        this.$super();
    },

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

    /**
     * Build the widget HTML.
     *
     * @method _buildHtml
     * @private
     */
    _buildHtml: function () {
        var _ = Stone.lazyGettext;

        this.$super();
        this.__html.window.className += " photonui-window";

        this.__html.windowTitle = document.createElement("div");
        this.__html.windowTitle.className = "photonui-window-title";
        this.__html.window.appendChild(this.__html.windowTitle);

        this.__html.windowTitleCloseButton = document.createElement("button");
        this.__html.windowTitleCloseButton.className = "photonui-window-title-close-button fa fa-times";
        this.__html.windowTitleCloseButton.title = _("Close");
        this.__html.windowTitle.appendChild(this.__html.windowTitleCloseButton);

        this.__html.windowTitleText = document.createElement("span");
        this.__html.windowTitleText.className = "photonui-window-title-text";
        this.__html.windowTitle.appendChild(this.__html.windowTitleText);

        this.__html.windowContent = document.createElement("div");
        this.__html.windowContent.className = "photonui-container photonui-window-content";
        this.__html.window.appendChild(this.__html.windowContent);
    },

    /**
     * Update all the windows.
     *
     * @method _updateWindowList
     * @private
     */
    _updateWindowList: function () {
        for (var i = _windowList.length - 1, z = 0 ; i >= 0 ; i--, z++) {   // jshint ignore:line
            if (i === 0) {
                _windowList[i].html.style.zIndex = 2001;
                _windowList[i].addClass("photonui-active");
            } else {
                _windowList[i].html.style.zIndex = 1000 + z;
                _windowList[i].removeClass("photonui-active");
            }
            if (_windowList[i].modal) {
                _windowList[i].html.style.zIndex = 3001;
            }
        }
    },

    //////////////////////////////////////////
    // Internal Events Callbacks            //
    //////////////////////////////////////////

    /**
     * Start moving the window.
     *
     * @method _moveDragStart
     * @private
     * @param {Object} event
     */
    __moveDragStart: function (event) {
        if (!this.movable || event.button > 0 || event.target === this.__html.windowTitleCloseButton) {
            return;
        }
        var offsetX = (event.offsetX !== undefined) ? event.offsetX : event.layerX;
        var offsetY = (event.offsetY !== undefined) ? event.offsetY : event.layerY;
        this.__html.windowTitle.style.cursor = "move";
        this._bindEvent("move.dragging", document, "mousemove", this.__moveDragging.bind(this, offsetX, offsetY));
        this._bindEvent("move.dragend", document, "mouseup", this.__moveDragEnd.bind(this));
    },

    /**
     * Move the window.
     *
     * @method _moveDragging
     * @private
     * @param {Number} offsetX
     * @param {Number} offsetY
     * @param {Object} event
     */
    __moveDragging: function (offsetX, offsetY, event) {
        this.__internalDragging(offsetX, offsetY, event.pageX, event.pageY);
    },

    /**
     * Stop moving the window.
     *
     * @method _moveDragEnd
     * @private
     * @param {Object} event
     */
    __moveDragEnd: function (event) {
        this.__html.windowTitle.style.cursor = "default";
        this._unbindEvent("move.dragging");
        this._unbindEvent("move.dragend");
    },

    /**
     * Move the window.
     *
     * @method __internalDragging
     * @private
     * @param {Number} offsetX
     * @param {Number} offsetY
     * @param {Number} pageX
     * @param {Number} pageY
     */
    __internalDragging: function (offsetX, offsetY, pageX, pageY) {
        var e_body = document.getElementsByTagName("body")[0];
        var x = Math.min(Math.max(pageX - offsetX, 40 - this.offsetWidth), e_body.offsetWidth - 40);
        var y = Math.max(pageY - offsetY, 0);
        if (e_body.offsetHeight > 0) {
            y = Math.min(y, e_body.offsetHeight - this.__html.windowTitle.offsetHeight);
        }
        this.setPosition(x, y);
    },

    /**
     * Start moving the window.
     *
     * @method _moveTouchStart
     * @private
     * @param {Object} event
     */
    __moveTouchStart: function (event) {
        if (!this.movable) {
            return;
        }
        if (event.target !== this.__html.windowTitle) {
            return;
        }

        var touchEvent = this.__getTouchEvent(event);
        this.__html.windowTitle.style.cursor = "move";
        this._bindEvent("move.touchmove", document, "touchmove",
            this.__moveTouchMove.bind(this, touchEvent.offsetX, touchEvent.offsetY));
        this._bindEvent("move.touchend", document, "touchend", this.__moveTouchEnd.bind(this));
        this._bindEvent("move.touchcancel", document, "touchcancel", this.__moveTouchEnd.bind(this));
    },

    /**
     * Move the window.
     *
     * @method _moveTouchMove
     * @private
     * @param {Number} offsetX
     * @param {Number} offsetY
     * @param {Object} event
     */
    __moveTouchMove: function (offsetX, offsetY, event) {
        var touchEvent = this.__getTouchEvent(event);
        this.__internalDragging(offsetX, offsetY, touchEvent.pageX, touchEvent.pageY);
    },

    /**
     * Stop moving the window.
     *
     * @method _moveTouchEnd
     * @private
     * @param {Object} event
     */
    __moveTouchEnd: function (event) {
        this.__html.windowTitle.style.cursor = "default";
        this._unbindEvent("move.touchmove");
        this._unbindEvent("move.touchend");
        this._unbindEvent("move.touchcancel");
    },

    /**
     * Gets the first touch event and normalizes pageX/Y and offsetX/Y properties.
     *
     * @method _moveTouchEnd
     * @private
     * @param {Object} event
     */
    __getTouchEvent: function (event) {
        if (event.touches && event.touches.length) {
            event.preventDefault();
            var evt = event.touches[0];
            evt.pageX = evt.pageX || evt.clientX;
            evt.pageY = evt.pageX || evt.clientY;

            var position = Helpers.getAbsolutePosition(event.target);
            evt.offsetX = evt.offsetX || evt.pageX - position.x;
            evt.offsetY = evt.offsetY || evt.pageY - position.y;
            return evt;
        }

        return event;
    },

    /**
     * Close button clicked.
     *
     * @method _closeButtonClicked
     * @private
     * @param {Object} event
     */
    __closeButtonClicked: function (event) {
        this._callCallbacks("close-button-clicked");
    },

    /**
     * Called when the locale is changed.
     *
     * @method __onLocaleChanged
     * @private
     */
    __onLocaleChanged: function () {
        this.$super();
        this.__html.windowTitleCloseButton.title = Stone.lazyGettext("Close");
    }
});

module.exports = Window;