Class: ConnectionNavigationPolicy

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:17

Set of rules controlling keyboard navigation from a connection.

Implements

• INavigationPolicy<RenderedConnection>

Methods index

Method	Description
getFirstChild	Returns the first child of a connection.
getParent	Returns the parent of the given connection.
getNextSibling	Returns the next element following the given connection.
getPreviousSibling	Returns the element preceding the given connection.
getRowId	Returns the row ID of the given connection.
isNavigable	Returns whether or not the given connection can be navigated to.
isApplicable	Returns whether the given object can be navigated from by this policy.

Constructors

Constructor

new ConnectionNavigationPolicy(): ConnectionNavigationPolicy;

Returns

ConnectionNavigationPolicy

Methods

getFirstChild()

getFirstChild(): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:23

Returns the first child of a connection.

Returns

IFocusableNode | null

Null, as connections do not have children.

Implementation of

INavigationPolicy.getFirstChild

---

getParent()

getParent(current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:33

Returns the parent of the given connection.

Parameters

Parameter	Type	Description
current	RenderedConnection	The connection to return the parent of.

Returns

IFocusableNode | null

The given connection's parent block.

Implementation of

INavigationPolicy.getParent

---

getNextSibling()

getNextSibling(current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:43

Returns the next element following the given connection.

Parameters

Parameter	Type	Description
current	RenderedConnection	The connection to navigate from.

Returns

IFocusableNode | null

The field, input connection or block following this connection.

Implementation of

INavigationPolicy.getNextSibling

---

getPreviousSibling()

getPreviousSibling(current): IFocusableNode | null;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:75

Returns the element preceding the given connection.

Parameters

Parameter	Type	Description
current	RenderedConnection	The connection to navigate from.

Returns

IFocusableNode | null

The field, input connection or block preceding this connection.

Implementation of

INavigationPolicy.getPreviousSibling

---

getRowId()

getRowId(current): string;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:100

Returns the row ID of the given connection.

Parameters

Parameter	Type	Description
current	RenderedConnection	The connection to retrieve the row ID of.

Returns

string

The row ID of the given connection.

Implementation of

INavigationPolicy.getRowId

---

isNavigable()

isNavigable(current): boolean;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:119

Returns whether or not the given connection can be navigated to.

Parameters

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

Returns

boolean

True if the given connection can be focused.

Implementation of

INavigationPolicy.isNavigable

---

isApplicable()

isApplicable(current): current is RenderedConnection;

Defined in: packages/blockly/core/keyboard_nav/navigation_policies/connection_navigation_policy.ts:146

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 RenderedConnection

True if the object is a RenderedConnection.

Implementation of

INavigationPolicy.isApplicable