Angular NavBar API

The NavBar is a widget that navigates the application views.

import { DxNavBarModule } from "devextreme-angular"

Type: DxNavBarTypes.default

Properties

An object defining configuration options for the NavBar widget.

Name	Description
accessKey	Specifies the shortcut key that sets focus on the widget.
dataSource	Binds the widget to data.
disabled	Specifies whether the widget responds to user interaction.
elementAttr	Specifies the attributes to be attached to the widget's root element.
focusStateEnabled	Specifies whether the widget can be focused using keyboard navigation.
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 pauses on it.
itemComponent	An alias for the itemTemplate option specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.
itemHoldTimeout	The time period in milliseconds before the onItemHold event is raised.
itemRender	An alias for the itemTemplate option specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.
items	An array of items displayed by the widget.
itemTemplate	Specifies a custom template for items.
keyExpr	Specifies which data field provides keys for widget items.
noDataText	The text or HTML markup displayed by the widget if the item collection is empty.
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 collection item is clicked or tapped.
onItemContextMenu	A function that is executed when a collection item is right-clicked or pressed.
onItemHold	A function that is executed when a collection item has been held for a specified period.
onItemRendered	A function that is executed after a collection item is rendered.
onOptionChanged	A function that is executed after a widget option is changed.
onSelectionChanged	A function that is executed when a collection item is selected or selection is canceled.
repaintChangesOnly	Specifies whether to repaint only those elements whose data changed.
rtlEnabled	Switches the widget to a right-to-left representation.
scrollByContent	Specifies whether or not an end-user can scroll tabs by swiping.
selectedIndex	The index of the currently selected widget item.
selectedItem	The selected item object.
selectedItemKeys	Specifies an array of currently selected item keys.
selectedItems	An array of currently selected item objects.
selectionMode	Specifies whether the widget enables an end-user to select only a single item or multiple items.
tabIndex	Specifies the number of the element when the Tab key is used for navigating.
visible	Specifies whether the widget is visible.
width	Specifies the widget's width.

Methods

This section describes members used to manipulate the widget.

Name	Description
beginUpdate()	Prevents the widget from refreshing until the endUpdate() method is called.
defaultOptions(rule)	Specifies the device-dependent default configuration options for this component.
dispose()	Disposes of all the resources allocated to the NavBar 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.
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.

Events

This section describes events fired by this widget.

Name	Description
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 a collection item is clicked or tapped.
itemContextMenu	Raised when a collection item is right-clicked or pressed.
itemHold	Raised when a collection item has been held for a specified period.
itemRendered	Raised after a collection item is rendered.
optionChanged	Raised after a widget option is changed.
selectionChanged	Raised when a collection item is selected or selection is canceled.

Default Item Template

This section lists the data source fields that are used in a default template for navbar items.

Type:

Object

By default, a predefined item template is applied to display the items of this widget. This template is based on certain fields of the data source provided for this widget. Below is the list of these fields. If the default item template is not appropriate for your task, implement a custom item template based on these or other fields of your data source.

Angular NavBar API

See Also

Properties

See Also

Methods

Events

See Also

Default Item Template

See Also