NavMenu

This namespace contains functionality associated with adding navigation items to the navigation menu of Gmail. Typically, these navigation links are accessible by the user on the left side of the email client and include built in navigation items like the Inbox, Sent Mail or Drafts links.

This namespace allows you to add your own items to this Navigation menu. Typically, these navigation items are useful to send users to different Routes that you have already registered providing navigation for your entire application. The navigation menu is represented as a tree structure of items. Each item can have 0 or more children and there are several options to configure the appearance of the items. Items can also have accessories which provide secondary actions like opening a dropdown (like Gmails labels) or providing a "create new" action. There are several predefined accesories, see CreateAccessoryDescriptor, IconButtonAccessoryDescriptor or DropdownButtonAccessoryDescriptor.

Namespace methods

addNavItem(navItemDescriptor)

Adds a navigation item to the root of the navigation menu. Navigation items from your app are grouped together where possible but ultimately the SDK optimizes for the best user experience when displaying navigation items.

Parameters	Type	Description
navItemDescriptor	NavItemDescriptor	A single descriptor for the nav item or stream of NavItemDescriptors.

Returns a NavItemView

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NavItemView

NavItemsViews are the elements placed inside a NavMenu. Each NavItemView represents an entry in the left navigation of Gmail. These NavItemViews can be nested.

Typically the main action of a NavItemView is performed when the user clicks on the main text. However, you can also provide accessories which are secondary actions which typically appear on the right side of the NavItemView but may be rendered in other ways. For nested NavItemViews, the SDK will handle collapsing and expanding children depending on user input.

Methods

addNavItem(navItemDescriptor)

Add a nested child NavItemView

Parameters	Type	Description
navItemDescriptor	NavItemDescriptor	A single descriptor for the nav item or stream of NavItemDescriptors.

Returns a NavItemView

remove()

Remove this NavItemView from its parent

isCollapsed()

Returns a boolean whether the NavItemView is currently collapsed and hiding its children

setCollapsed(collapseValue)

Collapse or uncollapse this NavItemView

Parameters	Type	Description
collapseValue	boolean	whether to collapse or uncollapse

Events

destroy

Fires when this view is destroyed.

Properties

Property	Type	Description	Required?	Default
destroyed	boolean	This property is set to true once the view is destroyed.	Yes

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NavItemDescriptor

This object represents the set of options to configure a new NavItemView.

Property	Type	Description	Required?	Default
name	string	Name of the NavItem to be used for display	Yes
key	string	Unique identifier for the nav item used for remembering collapse state between sessions.	No	value of name
routeID	string	The ID of the route to navigate to when the NavItemView is clicked on.	No	null
routeParams	Object	The parameters of the route being navigated to when the NavItemView is clicked on.	No	null
onClick	function	A function that will be called when the NavItemView is clicked. Passed a single event object parameter which includes a preventDefault() function. If the NavItemView has a routeID, calling preventDefault() will prevent navigation to the given route.	No	null
orderHint	integer	Used to specify the order in which your NavItemViews should be relative to each other	No	Number.MAX_SAFE_INTEGER
accessory	CreateAccessoryDescriptor or IconButtonAccessoryDescriptor or DropdownButtonAccessoryDescriptor	There are several "accessories" which can provide secondary actions for NavItemViews	No	null
iconUrl	string	An optional url to an icon to display an icon alongside the name of the NavItemView	No	null
iconClass	string	An optional class to apply to the icon.	No	null
iconElement	HTMLElement	An optional icon element to use as the icon. This property can't be used with iconUrl or iconClass.	No	null
backgroundColor	string	If you provide none of the iconUrl, iconElement, iconClass properties, then a colored circle will be displayed next to the NavItemView that has its color set by this property, or gray by default.	No	null
type	NavItemTypes	The nav item type affects how the item is displayed.	No	NAVIGATION

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CreateAccessoryDescriptor

The CreateAccessoryDescriptor allows you to add an action to allow the user to create a new child of this item.

Property	Type	Description	Required?	Default
type	string	For CreateAccessoryDescriptors this should always be set to CREATE	Yes
onClick	function	Callback for when the "Create New" accessory is pressed.	Yes

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IconButtonAccessoryDescriptor

The IconButtonAccessoryDescriptor allows you to add an icon button right next your NavItem which lets the user take a secondary action

Property	Type	Description	Required?	Default
type	string	For IconButtonAccessoryDescriptors this should always be set to ICON_BUTTON	Yes
onClick	function	Callback for when the IconButton accessory is pressed.	Yes
iconUrl	string	A URL for the icon to be displayed in the button.	Yes
iconClass	string	An optional class to add to the icon.	No	null

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DropdownButtonAccessoryDescriptor

The DropdownButtonAccessoryDescriptor allows you to add a dropdown right next your NavItemView

Property	Type	Description	Required?	Default
type	string	For DropdownButtonAccessoryDescriptors this should always be set to DROPDOWN_BUTTON	Yes
onClick	function(event)	A callback when the dropdown button is pressed. The event object passed to you has a dropdown property which you can fill your content with.	Yes

Enums and Constants

NavItemTypes

Enum	Description
NAVIGATION	standard nav item for navigating
LINK	nav item that looks like a link