Angular DropDownButton API

The DropDownButton is a button that opens a drop-down menu.

import { DxDropDownButtonModule } from "devextreme-angular"

Type: DxDropDownButtonTypes.default

Properties

This section describes options that configure the DropDownButton widget's contents, behavior, and appearance.

Name	Description
accessKey	Specifies the shortcut key that sets focus on the widget.
activeStateEnabled	Specifies whether or not the widget changes its state when interacting with a user.
dataSource	Provides data for the drop-down menu.
deferRendering	Specifies whether to wait until the drop-down menu is opened the first time to render its content.
disabled	Specifies whether the widget responds to user interaction.
displayExpr	Specifies the data field whose values should be displayed in the drop-down menu.
dropDownContentComponent	An alias for the dropDownContentTemplate option specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.
dropDownContentRender	An alias for the dropDownContentTemplate option specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.
dropDownContentTemplate	Specifies custom content for the drop-down field.
dropDownOptions	Configures the drop-down field.
elementAttr	Specifies the attributes to be attached to the widget's root element.
focusStateEnabled	Specifies whether users can use keyboard to focus the widget.
height	Specifies the widget's height.
hint	Specifies text for a hint that appears when a user pauses on the widget.
hoverStateEnabled	Specifies whether the widget changes its state when a user hovers the mouse pointer over it.
icon	Specifies the button's icon.
itemComponent	An alias for the itemTemplate option specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.
itemRender	An alias for the itemTemplate option specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.
items	Provides drop-down menu items.
itemTemplate	Specifies a custom template for drop-down menu items.
keyExpr	Specifies which data field provides keys used to distinguish between the selected drop-down menu items.
noDataText	Specifies text or HTML markup displayed in the drop-down menu when it does not contain any items.
onButtonClick	A function that is executed when the button is clicked or tapped. If splitButton is true, this function is executed for the action button only.
onContentReady	A function that is executed when the widget's content is ready and each time the content is changed.
onDisposing	A function that is executed before the widget is disposed of.
onInitialized	A function used in JavaScript frameworks to save the widget instance.
onItemClick	A function that is executed when a drop-down menu item is clicked.
onOptionChanged	A function that is executed after a widget option is changed.
onSelectionChanged	A function that is executed when an item is selected or selection is canceled. In effect when useSelectMode is true.
opened	Specifies whether the drop-down menu is opened.
rtlEnabled	Switches the widget to a right-to-left representation.
selectedItem	Contains the selected item's data. Available when useSelectMode is true.
selectedItemKey	Contains the selected item's key and allows you to specify the initially selected item. Applies when useSelectMode is true.
showArrowIcon	Specifies whether the arrow icon should be displayed.
splitButton	Specifies whether to split the button in two: one executes an action, the other opens and closes the drop-down menu.
stylingMode	Specifies how the button is styled.
tabIndex	Specifies the number of the element when the Tab key is used for navigating.
text	Specifies the button's text. Applies only if useSelectMode is false.
useSelectMode	Specifies whether the widget stores the selected drop-down menu item.
visible	Specifies whether the widget is visible.
width	Specifies the widget's width.

Methods

This section describes methods that control the DropDownButton widget.

Name	Description
beginUpdate()	Prevents the widget from refreshing until the endUpdate() method is called.
close()	Closes the drop-down menu.
defaultOptions(rule)	Specifies the device-dependent default configuration options for this component.
dispose()	Disposes of all the resources allocated to the DropDownButton instance.
element()	Gets the root widget element.
endUpdate()	Refreshes the widget after a call of the beginUpdate() method.
focus()	Sets focus on the widget.
getDataSource()	Gets the DataSource instance.
getInstance(element)	Gets the instance of a widget found using its DOM node.
instance()	Gets the widget's instance. Use it to access other methods of the widget.
off(eventName)	Detaches all event handlers from a single event.
off(eventName, eventHandler)	Detaches a particular event handler from a single event.
on(eventName, eventHandler)	Subscribes to an event.
on(events)	Subscribes to events.
open()	Opens the drop-down menu.
option()	Gets all widget options.
option(optionName)	Gets the value of a single option.
option(optionName, optionValue)	Updates the value of a single option.
option(options)	Updates the values of several options.
registerKeyHandler(key, handler)	Registers a handler to be executed when a user presses a specific key.
repaint()	Repaints the widget without reloading data. Call it to update the widget's markup.
toggle()	Opens or closes the drop-down menu, reversing the current state.
toggle(visibility)	Opens or closes the drop-down menu, depending on the argument.

Events

This section describes events that the DropDownButton widget raises.

Name	Description
buttonClick	Raised when the button is clicked.
contentReady	Raised when the widget's content is ready.
disposing	Raised before the widget is disposed of.
initialized	Raised only once, after the widget is initialized.
itemClick	Raised when an item in the drop-down filed is clicked.
optionChanged	Raised after a widget option is changed.
selectionChanged	Raised when an item is selected or selection is canceled.

Default Item Template

This section describes object fields that can be used in the default item template.

Type:

Object

Angular DropDownButton API

See Also

Properties

See Also

Methods

See Also

Events

See Also

Default Item Template

See Also