    /**
     * A layout that arranges items horizontally across a Container. This layout optionally divides available horizontal
     * space between child items containing a numeric `flex` configuration.
     *
     * This layout may also be used to set the heights of child items by configuring it with the {@link #align} option.
     *
     *     @example
     *     Ext.create('Ext.Panel', {
     *         width: 500,
     *         height: 300,
     *         title: "HBoxLayout Panel",
     *         layout: {
     *             type: 'hbox',
     *             align: 'stretch'
     *         },
     *         renderTo: document.body,
     *         items: [{
     *             xtype: 'panel',
     *             title: 'Inner Panel One',
     *             flex: 2
     *         },{
     *             xtype: 'panel',
     *             title: 'Inner Panel Two',
     *             flex: 1
     *         },{
     *             xtype: 'panel',
     *             title: 'Inner Panel Three',
     *             flex: 1
     *         }]
     *     });
     */
    Ext.define('Ext.layout.container.HBox', {

        /* Begin Definitions */

        alias: ['layout.hbox'],
        extend: 'Ext.layout.container.Box',
        alternateClassName: 'Ext.layout.HBoxLayout',

        /* End Definitions */

        /**
         * @cfg {String} align
         * Controls how the child items of the container are aligned. Acceptable configuration values for this property are:
         *
         * - **top** : **Default** child items are aligned vertically at the **top** of the container
         * - **middle** : child items are aligned vertically in the **middle** of the container
         * - **stretch** : child items are stretched vertically to fill the height of the container
         * - **stretchmax** : child items are stretched vertically to the height of the largest item.
         */
        align: 'top', // top, middle, stretch, strechmax

        type : 'hbox',

        direction: 'horizontal',

        horizontal: true,

        names: {
            // parallel
            lr: 'lr',
            left: 'left',// 'before',
            leftCap: 'Left',
            right: 'right',// 'after',
            position: 'left',
            width: 'width',
            contentWidth: 'contentWidth',
            minWidth: 'minWidth',
            maxWidth: 'maxWidth',
            widthCap: 'Width',
            widthModel: 'widthModel',
            widthIndex: 0,
            x: 'x',
            scrollLeft: 'scrollLeft',
            overflowX: 'overflowX',
            hasOverflowX: 'hasOverflowX',
            invalidateScrollX: 'invalidateScrollX',

            // perpendicular
            center: 'middle',
            top: 'top',
            topPosition: 'top',
            bottom: 'bottom',
            height: 'height',
            contentHeight: 'contentHeight',
            minHeight: 'minHeight',
            maxHeight: 'maxHeight',
            heightCap: 'Height',
            heightModel: 'heightModel',
            heightIndex: 1,
            y: 'y',
            scrollTop: 'scrollTop',
            overflowY: 'overflowY',
            hasOverflowY: 'hasOverflowY',
            invalidateScrollY: 'invalidateScrollY',

            // Methods
            getWidth: 'getWidth',
            getHeight: 'getHeight',
            setWidth: 'setWidth',
            setHeight: 'setHeight',
            gotWidth: 'gotWidth',
            gotHeight: 'gotHeight',
            setContentWidth: 'setContentWidth',
            setContentHeight: 'setContentHeight',
            setWidthInDom: 'setWidthInDom',
            setHeightInDom: 'setHeightInDom'
        },

        sizePolicy: {
            flex: {
                '': {
                    setsWidth: 1,
                    setsHeight: 0
                },
                stretch: {
                    setsWidth: 1,
                    setsHeight: 1
                },
                stretchmax: {
                    readsHeight: 1,
                    setsWidth: 1,
                    setsHeight: 1
                }
            },
            '': {
                setsWidth: 0,
                setsHeight: 0
            },
            stretch: {
                setsWidth: 0,
                setsHeight: 1
            },
            stretchmax: {
                readsHeight: 1,
                setsWidth: 0,
                setsHeight: 1
            }
        }
    });