[ExtJS] Close Window if Click Anywhere Other Than The Window Itself

Some web application shows a window for presenting more detail information. It allows user to close the window not only via clicking the close button but also via clicking anywhere other than the window itself.

Click to Close Ext JS Window on Focus Out
If you'd like to have this behavior for a window in ExtJS, you can add the following code to your application.
Ext.define('TonyTuan.window.Window', {
    override: 'Ext.window.Window',
    closeOnFocusOut: false,
    initComponent: function() {
        var me = this;
        if (me.closeOnFocusOut === true) {
            me.mon(Ext.getBody(), 'click', function(el, e) {
            }, me, {
                delegate: '.x-mask'
And set closeOnFocusOut:true for the window you want.
Ext.widget('window', {
    closeOnFocusOut: true,
    title: 'Hello',
    height: 200,
    width: 400,
    layout: 'fit',
    items: {       
        html: 'hello world'

Please note that this kind of behavior is not suitable for a window with a input form, since user may click somewhere other than the window incautiously, leading to the loss of input data.