    ContainerLayout
      BorderLayout

# Class Ext.layout.BorderLayout

Package: | Ext.layout
Defined In: | BorderLayout.js
Class: | BorderLayout
Extends: | ContainerLayout

This is a multi-pane, application-oriented UI layout style that supports multiple nested panels, automatic split bars between regions and built-in expanding and collapsing of regions.

This class is intended to be extended or created via the `layout:'border'` Ext.Container.layout config, and should generally not need to be created directly via the new keyword.

BorderLayout does not have any direct config options (other than inherited ones). All configuration options available for customizing the BorderLayout are at the Ext.layout.BorderLayout.Region and Ext.layout.BorderLayout.SplitRegion levels.

Example usage:

    var myBorderPanel = new Ext.Panel({
        renderTo: document.body,
        width: 700,
        height: 500,
        title: 'Border Layout',
        layout: 'border',
        items: [{
            title: 'South Region is resizable',
            region: 'south',     // position for region
            height: 100,
            split: true,         // enable resizing
            minSize: 75,         // defaults to 50
            maxSize: 150,
            margins: '0 5 5 5'
        },{
            // xtype: 'panel' implied by default
            title: 'West Region is collapsible',
            region:'west',
            margins: '5 0 0 5',
            width: 200,
            collapsible: true,   // make collapsible
            cmargins: '5 5 0 5', // adjust top margin when collapsed
            id: 'west-region-container',
            layout: 'fit',
            unstyled: true
        },{
            title: 'Center Region',
            region: 'center',     // center region is required, no width/height specified
            xtype: 'container',
            layout: 'fit',
            margins: '5 5 0 0'
        }]
    });

Notes:

- Any container using the BorderLayout must have a child item with `region:'center'`. The child item in the center region will always be resized to fill the remaining space not used by the other regions in the layout.
- Any child items with a region of `west` or `east` must have `width` defined (an integer representing the number of pixels that the region should take up).
- Any child items with a region of `north` or `south` must have `height` defined.
- The regions of a BorderLayout are fixed at render time and thereafter, its child Components may not be removed or added. To add/remove Components within a BorderLayout, have them wrapped by an additional Container which is directly managed by the BorderLayout. If the region is to be collapsible, the Container used directly by the BorderLayout manager should be a Panel. In the following example a Container (an Ext.Panel) is added to the west region:

      wrc = Ext.getCmp('west-region-container');
      wrc.removeAll();
      wrc.add({
          title: 'Added Panel',
          html: 'Some content'
      });
      wrc.doLayout();

- To reference a Region:

      wr = myBorderPanel.layout.west;

## Config Options

Config Options | Defined By
--- | ---
| extraCls : String An optional extra CSS class that will be added to the container. This can be useful for adding customized styles to t... An optional extra CSS class that will be added to the container. This can be useful for adding customized styles to the container or any of its children using standard CSS rules. See Ext.Component.ctCls also. Note: `extraCls` defaults to `''` except for the following classes which assign a value by default: Absolute Layout : `'x-abs-layout-item'` Box Layout : `'x-box-item'` Column Layout : `'x-column'` To configure the above Classes with an extra CSS class append to the default. For example, for ColumnLayout:
    extraCls: 'x-column custom-class'
| ContainerLayout
| renderHidden : Boolean True to hide each contained item on render (defaults to false). | ContainerLayout

## Public Properties

Property | Defined By
--- | ---
| fieldTpl : Ext.Template The Ext.Template used by Field rendering layout classes (such as Ext.layout.FormLayout) to create the DOM structure o... The Ext.Template used by Field rendering layout classes (such as Ext.layout.FormLayout) to create the DOM structure of a fully wrapped, labeled and styled form Field. A default Template is supplied, but this may be overriden to create custom field structures. The template processes values returned from Ext.layout.FormLayout.getTemplateArgs. | ContainerLayout
| if : Object This monitorResize flag will be renamed soon as to avoid confusion with the Container version which hooks onWindowRes... This monitorResize flag will be renamed soon as to avoid confusion with the Container version which hooks onWindowResize to doLayout monitorResize flag in this context attaches the resize event between a container and it's layout | ContainerLayout

## Public Methods

Method | Defined By
--- | ---
| parseMargins( Number|String v ) : Object Parses a number or string representing margin sizes into an object. Supports CSS-style margin declarations (e.g. 10, ... Parses a number or string representing margin sizes into an object. Supports CSS-style margin declarations (e.g. 10, "10", "10 10", "10 10 10" and "10 10 10 10" are all valid options and would return the same result) Parameters: `v` : Number|String The encoded margins Returns: `Object` An object with margin sizes for top, right, bottom and left | ContainerLayout

## Public Events

This class has no public events.