Class: FlyoutButtonNavigationPolicy

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:14

Set of rules controlling keyboard navigation from a flyout button.

Implements

• INavigationPolicy<FlyoutButton>

Methods index

Method	Description
getFirstChild	Returns null since flyout buttons have no children.
getParent	Returns the parent workspace of the given flyout button.
getNextSibling	Returns null since inter-item navigation is done by FlyoutNavigationPolicy.
getPreviousSibling	Returns null since inter-item navigation is done by FlyoutNavigationPolicy.
getRowId	Returns the row ID of the given flyout button.
isNavigable	Returns whether or not the given flyout button can be navigated to.
isApplicable	Returns whether the given object can be navigated from by this policy.

Constructors

Constructor

new FlyoutButtonNavigationPolicy(): FlyoutButtonNavigationPolicy;

Returns

FlyoutButtonNavigationPolicy

Methods

getFirstChild()

getFirstChild(_current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:21

Returns null since flyout buttons have no children.

Parameters

Parameter	Type	Description
_current	FlyoutButton	The FlyoutButton instance to navigate from.

Returns

IFocusableNode | null

Null.

Implementation of

INavigationPolicy.getFirstChild

---

getParent()

getParent(current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:31

Returns the parent workspace of the given flyout button.

Parameters

Parameter	Type	Description
current	FlyoutButton	The FlyoutButton instance to navigate from.

Returns

IFocusableNode | null

The given flyout button's parent workspace.

Implementation of

INavigationPolicy.getParent

---

getNextSibling()

getNextSibling(_current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:41

Returns null since inter-item navigation is done by FlyoutNavigationPolicy.

Parameters

Parameter	Type	Description
_current	FlyoutButton	The FlyoutButton instance to navigate from.

Returns

IFocusableNode | null

Null.

Implementation of

INavigationPolicy.getNextSibling

---

getPreviousSibling()

getPreviousSibling(_current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:51

Returns null since inter-item navigation is done by FlyoutNavigationPolicy.

Parameters

Parameter	Type	Description
_current	FlyoutButton	The FlyoutButton instance to navigate from.

Returns

IFocusableNode | null

Null.

Implementation of

INavigationPolicy.getPreviousSibling

---

getRowId()

getRowId(current): string;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:61

Returns the row ID of the given flyout button.

Parameters

Parameter	Type	Description
current	FlyoutButton	The flyout button to retrieve the row ID of.

Returns

string

The row ID of the given flyout button.

Implementation of

INavigationPolicy.getRowId

---

isNavigable()

isNavigable(current): boolean;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:71

Returns whether or not the given flyout button can be navigated to.

Parameters

Parameter	Type	Description
current	FlyoutButton	The instance to check for navigability.

Returns

boolean

True if the given flyout button can be focused.

Implementation of

INavigationPolicy.isNavigable

---

isApplicable()

isApplicable(current): current is FlyoutButton;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/flyout_button_navigation_policy.ts:81

Returns whether the given object can be navigated from by this policy.

Parameters

Parameter	Type	Description
current	any	The object to check if this policy applies to.

Returns

current is FlyoutButton

True if the object is a FlyoutButton.

Implementation of

INavigationPolicy.isApplicable