Form components
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form              Ext.FormPanel
checkbox          Ext.form.Checkbox
combo             Ext.form.ComboBox
datefield         Ext.form.DateField
field             Ext.form.Field
fieldset          Ext.form.FieldSet
hidden            Ext.form.Hidden
htmleditor        Ext.form.HtmlEditor
label             Ext.form.Label
numberfield       Ext.form.NumberField
radio             Ext.form.Radio
textarea          Ext.form.TextArea
textfield         Ext.form.TextField
timefield         Ext.form.TimeField
trigger           Ext.form.TriggerField