Base class for all Ext components. All subclasses of Component may participate in the automated Ext component lifecycle of creation, rendering and destruction which is provided by the Container class. Components may be added to a Container through the items config option at the time the Container is created, or they may be added dynamically via the add method.

The Component base class has built-in support for basic hide/show and enable/disable behavior.

All Components are registered with the Ext.ComponentMgr on construction so that they can be referenced at any time via Ext.getCmp, passing the id.

All user-developed visual widgets that are required to participate in automated lifecycle and size management should subclass Component (or Ext.BoxComponent if managed box model handling is required, ie height and width management).

See the Creating new UI controls tutorial for details on how and to either extend or augment ExtJs base classes to create custom Components.

Every component has a specific xtype, which is its Ext-specific type name, along with methods for checking the xtype like getXType and isXType. This is the list of all valid xtypes:

xtype            Class
-------------    ------------------
box              Ext.BoxComponent
button           Ext.Button
buttongroup      Ext.ButtonGroup
colorpalette     Ext.ColorPalette
component        Ext.Component
container        Ext.Container
cycle            Ext.CycleButton
dataview         Ext.DataView
datepicker       Ext.DatePicker
editor           Ext.Editor
editorgrid       Ext.grid.EditorGridPanel
flash            Ext.FlashComponent
grid             Ext.grid.GridPanel
listview         Ext.ListView
panel            Ext.Panel
progress         Ext.ProgressBar
propertygrid     Ext.grid.PropertyGrid
slider           Ext.Slider
spacer           Ext.Spacer
splitbutton      Ext.SplitButton
tabpanel         Ext.TabPanel
treepanel        Ext.tree.TreePanel
viewport         Ext.ViewPort
window           Ext.Window

Toolbar components
---------------------------------------
paging           Ext.PagingToolbar
toolbar          Ext.Toolbar
tbbutton         Ext.Toolbar.Button        (deprecated; use button)
tbfill           Ext.Toolbar.Fill
tbitem           Ext.Toolbar.Item
tbseparator      Ext.Toolbar.Separator
tbspacer         Ext.Toolbar.Spacer
tbsplit          Ext.Toolbar.SplitButton   (deprecated; use splitbutton)
tbtext           Ext.Toolbar.TextItem

Menu components
---------------------------------------
menu             Ext.menu.Menu
colormenu        Ext.menu.ColorMenu
datemenu         Ext.menu.DateMenu
menubaseitem     Ext.menu.BaseItem
menucheckitem    Ext.menu.CheckItem
menuitem         Ext.menu.Item
menuseparator    Ext.menu.Separator
menutextitem     Ext.menu.TextItem

Form components
---------------------------------------
form             Ext.form.FormPanel
checkbox         Ext.form.Checkbox
checkboxgroup    Ext.form.CheckboxGroup
combo            Ext.form.ComboBox
datefield        Ext.form.DateField
displayfield     Ext.form.DisplayField
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
radiogroup       Ext.form.RadioGroup
textarea         Ext.form.TextArea
textfield        Ext.form.TextField
timefield        Ext.form.TimeField
trigger          Ext.form.TriggerField

Chart components
---------------------------------------
chart            Ext.chart.Chart
barchart         Ext.chart.BarChart
cartesianchart   Ext.chart.CartesianChart
columnchart      Ext.chart.ColumnChart
linechart        Ext.chart.LineChart
piechart         Ext.chart.PieChart

Store xtypes
---------------------------------------
arraystore       Ext.data.ArrayStore
directstore      Ext.data.DirectStore
groupingstore    Ext.data.GroupingStore
jsonstore        Ext.data.JsonStore
simplestore      Ext.data.SimpleStore      (deprecated; use arraystore)
store            Ext.data.Store
xmlstore         Ext.data.XmlStore