--- /dev/null
+/**
+ * @class Ext.container.Viewport
+ * @extends Ext.container.Container
+
+A specialized container representing the viewable application area (the browser viewport).
+
+The Viewport renders itself to the document body, and automatically sizes itself to the size of
+the browser viewport and manages window resizing. There may only be one Viewport created
+in a page.
+
+Like any {@link Ext.container.Container Container}, a Viewport will only perform sizing and positioning
+on its child Components if you configure it with a {@link #layout}.
+
+A Common layout used with Viewports is {@link Ext.layout.container.Border border layout}, but if the
+required layout is simpler, a different layout should be chosen.
+
+For example, to simply make a single child item occupy all available space, use {@link Ext.layout.container.Fit fit layout}.
+
+To display one "active" item at full size from a choice of several child items, use {@link Ext.layout.container.Card card layout}.
+
+Inner layouts are available by virtue of the fact that all {@link Ext.panel.Panel Panel}s
+added to the Viewport, either through its {@link #items}, or through the items, or the {@link #add}
+method of any of its child Panels may themselves have a layout.
+
+The Viewport does not provide scrolling, so child Panels within the Viewport should provide
+for scrolling if needed using the {@link #autoScroll} config.
+{@img Ext.container.Viewport/Ext.container.Viewport.png Ext.container.Viewport component}
+An example showing a classic application border layout:
+
+ Ext.create('Ext.container.Viewport', {
+ layout: 'border',
+ renderTo: Ext.getBody(),
+ items: [{
+ region: 'north',
+ html: '<h1 class="x-panel-header">Page Title</h1>',
+ autoHeight: true,
+ border: false,
+ margins: '0 0 5 0'
+ }, {
+ region: 'west',
+ collapsible: true,
+ title: 'Navigation',
+ width: 150
+ // could use a TreePanel or AccordionLayout for navigational items
+ }, {
+ region: 'south',
+ title: 'South Panel',
+ collapsible: true,
+ html: 'Information goes here',
+ split: true,
+ height: 100,
+ minHeight: 100
+ }, {
+ region: 'east',
+ title: 'East Panel',
+ collapsible: true,
+ split: true,
+ width: 150
+ }, {
+ region: 'center',
+ xtype: 'tabpanel', // TabPanel itself has no title
+ activeTab: 0, // First tab active by default
+ items: {
+ title: 'Default Tab',
+ html: 'The first tab\'s content. Others may be added dynamically'
+ }
+ }]
+ });
+
+ * @constructor
+ * Create a new Viewport
+ * @param {Object} config The config object
+ * @markdown
+ * @xtype viewport
+ */
+Ext.define('Ext.container.Viewport', {
+ extend: 'Ext.container.Container',
+ alias: 'widget.viewport',
+ requires: ['Ext.EventManager'],
+ alternateClassName: 'Ext.Viewport',
+
+ /*
+ * Privatize config options which, if used, would interfere with the
+ * correct operation of the Viewport as the sole manager of the
+ * layout of the document body.
+ */
+ /**
+ * @cfg {Mixed} applyTo @hide
+ */
+ /**
+ * @cfg {Boolean} allowDomMove @hide
+ */
+ /**
+ * @cfg {Boolean} hideParent @hide
+ */
+ /**
+ * @cfg {Mixed} renderTo @hide
+ */
+ /**
+ * @cfg {Boolean} hideParent @hide
+ */
+ /**
+ * @cfg {Number} height @hide
+ */
+ /**
+ * @cfg {Number} width @hide
+ */
+ /**
+ * @cfg {Boolean} autoHeight @hide
+ */
+ /**
+ * @cfg {Boolean} autoWidth @hide
+ */
+ /**
+ * @cfg {Boolean} deferHeight @hide
+ */
+ /**
+ * @cfg {Boolean} monitorResize @hide
+ */
+
+ isViewport: true,
+
+ ariaRole: 'application',
+ initComponent : function() {
+ var me = this,
+ html = Ext.fly(document.body.parentNode),
+ el;
+ me.callParent(arguments);
+ html.addCls(Ext.baseCSSPrefix + 'viewport');
+ if (me.autoScroll) {
+ html.setStyle('overflow', 'auto');
+ }
+ me.el = el = Ext.getBody();
+ el.setHeight = Ext.emptyFn;
+ el.setWidth = Ext.emptyFn;
+ el.setSize = Ext.emptyFn;
+ el.dom.scroll = 'no';
+ me.allowDomMove = false;
+ //this.autoWidth = true;
+ //this.autoHeight = true;
+ Ext.EventManager.onWindowResize(me.fireResize, me);
+ me.renderTo = me.el;
+ },
+
+ fireResize : function(w, h){
+ // setSize is the single entry point to layouts
+ this.setSize(w, h);
+ //this.fireEvent('resize', this, w, h, w, h);
+ }
+});