Class: Toolbox

Defined in: packages/blockly/core/toolbox/toolbox.ts:56

Class for a Toolbox. Creates the toolbox's DOM.

Extends

• DeleteArea

Implements

• IAutoHideable
• IKeyboardAccessible
• IStyleable
• IToolbox
• IFocusableNode

Properties index

Property	Description
wouldDelete_	Whether the last block or bubble dragged over this delete area would be deleted if dropped on this component. This property is not updated after the block or bubble is deleted.
id	The unique ID for this component that is used to register with the ComponentManager.
toolboxDef_	-
HtmlDiv	The HTML container for the toolbox.
contentsDiv_	The HTML container for the contents of a toolbox.
isVisible_	Whether the Toolbox is visible.
width_	The width of the toolbox.
height_	The height of the toolbox.
RTL	-
contents	Map from ID to the corresponding toolbox item.
toolboxPosition	-
selectedItem_	The currently selected item.
previouslySelectedItem_	The previously selected item.
boundEvents_	Array holding info needed to unbind event handlers. Used for disposing. Ex: [[node, name, func], [node, name, func]].
workspace_	The workspace this toolbox is on.

Methods index

Method	Description
wouldDelete	Returns whether the provided block or bubble would be deleted if dropped on this area. This method should check if the element is deletable and is always called before onDragEnter/onDragOver/onDragExit.
onDragOver	Handles when a cursor with a block or bubble is dragged over this drag target.
shouldPreventMove	Returns whether the provided block or bubble should not be moved after being dropped on this component. If true, the element will return to where it was when the drag started.
onShortcut	Handles the given keyboard shortcut.
init	Initializes the toolbox
createDom_	Creates the DOM for the toolbox.
createContainer_	Creates the container div for the toolbox.
createContentsContainer_	Creates the container for all the contents in the toolbox.
attachEvents_	Adds event listeners to the toolbox container div.
onClick_	Handles on click events for when the toolbox or toolbox items are clicked.
onKeyDown_	Handles key down events for the toolbox.
createFlyout_	Creates the flyout based on the toolbox layout.
renderContents_	Adds all the toolbox items to the toolbox.
addToolboxItem_	Adds an item to the toolbox.
getToolboxItems	Gets the items in the toolbox.
getClientRect	Returns the bounding rectangle of the drag target area in pixel units relative to viewport.
onDragEnter	Handles when a cursor with a block or bubble enters this drag target.
onDragExit	Handles when a cursor with a block or bubble exits this drag target.
onDrop	Handles when a block or bubble is dropped on this component. Should not handle delete here.
updateWouldDelete_	Updates the internal wouldDelete_ state.
updateCursorDeleteStyle_	Adds or removes the CSS style of the cursor over the toolbox based whether the block or bubble over it is expected to be deleted if dropped (using the internal this.wouldDelete_ property).
getToolboxItemById	Gets the toolbox item with the given ID.
getWidth	Gets the width of the toolbox.
getHeight	Gets the height of the toolbox.
getFlyout	Gets the toolbox flyout.
getWorkspace	Gets the workspace for the toolbox.
getSelectedItem	Gets the selected item.
getPreviouslySelectedItem	Gets the previously selected item.
isHorizontal	Gets whether or not the toolbox is horizontal.
position	Positions the toolbox based on whether it is a horizontal toolbox and whether the workspace is in rtl.
clearSelection	Unhighlights any previously selected item.
refreshSelection	Updates the flyout's content without closing it. Should be used in response to a change in one of the dynamic categories, such as variables or procedures.
setVisible	Shows or hides the toolbox.
autoHide	Hides the component. Called in WorkspaceSvg.hideChaff.
setSelectedItem	Sets the given item as selected. No-op if the item is not selectable.
shouldDeselectItem_	Decides whether the old item should be deselected.
shouldSelectItem_	Decides whether the new item should be selected.
deselectItem_	Deselects the given item, marks it as unselected, and updates aria state.
selectItem_	Selects the given item, marks it selected, and updates aria state.
selectItemByPosition	Selects the toolbox item by its position in the list of toolbox items.
updateFlyout_	Decides whether to hide or show the flyout depending on the selected item.
dispose	Disposes of this toolbox.
getFocusableElement	See IFocusableNode.getFocusableElement.
getFocusableTree	See IFocusableNode.getFocusableTree.
onNodeFocus	See IFocusableNode.onNodeFocus.
onNodeBlur	See IFocusableNode.onNodeBlur.
canBeFocused	See IFocusableNode.canBeFocused.
getRootFocusableNode	See IFocusableTree.getRootFocusableNode.
getRestoredFocusableNode	See IFocusableTree.getRestoredFocusableNode.
getNestedTrees	See IFocusableTree.getNestedTrees.
lookUpFocusableNode	See IFocusableTree.lookUpFocusableNode.
onTreeFocus	See IFocusableTree.onTreeFocus.
onTreeBlur	See IFocusableTree.onTreeBlur.
getNavigator	Returns the Navigator instance to use to move between items in this toolbox.

Constructors

Constructor

new Toolbox(workspace): Toolbox;

Defined in: packages/blockly/core/toolbox/toolbox.ts:120

Parameters

Parameter	Type	Description
workspace	WorkspaceSvg	The workspace in which to create new blocks.

Returns

Toolbox

Overrides

DeleteArea.constructor

Properties

wouldDelete_

protected wouldDelete_: boolean = false;

Defined in: packages/blockly/core/delete_area.ts:32

Whether the last block or bubble dragged over this delete area would be deleted if dropped on this component. This property is not updated after the block or bubble is deleted.

Inherited from

DeleteArea.wouldDelete_

---

id

id: string = 'toolbox';

Defined in: packages/blockly/core/toolbox/toolbox.ts:69

The unique ID for this component that is used to register with the ComponentManager.

Implementation of

IAutoHideable.id

Overrides

DeleteArea.id

---

toolboxDef_

protected toolboxDef_: ToolboxInfo;

Defined in: packages/blockly/core/toolbox/toolbox.ts:70

---

HtmlDiv

HtmlDiv: HTMLDivElement | null = null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:74

The HTML container for the toolbox.

---

contentsDiv_

protected contentsDiv_: HTMLDivElement | null = null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:77

The HTML container for the contents of a toolbox.

---

isVisible_

protected isVisible_: boolean = false;

Defined in: packages/blockly/core/toolbox/toolbox.ts:80

Whether the Toolbox is visible.

---

width_

protected width_: number = 0;

Defined in: packages/blockly/core/toolbox/toolbox.ts:83

The width of the toolbox.

---

height_

protected height_: number = 0;

Defined in: packages/blockly/core/toolbox/toolbox.ts:86

The height of the toolbox.

---

RTL

RTL: boolean;

Defined in: packages/blockly/core/toolbox/toolbox.ts:87

---

contents

protected contents: Map<string, IToolboxItem>;

Defined in: packages/blockly/core/toolbox/toolbox.ts:93

Map from ID to the corresponding toolbox item.

---

toolboxPosition

toolboxPosition: Position;

Defined in: packages/blockly/core/toolbox/toolbox.ts:95

---

selectedItem_

protected selectedItem_: 
  | ISelectableToolboxItem
  | null = null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:98

The currently selected item.

---

previouslySelectedItem_

protected previouslySelectedItem_: 
  | ISelectableToolboxItem
  | null = null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:101

The previously selected item.

---

boundEvents_

protected boundEvents_: Data[] = [];

Defined in: packages/blockly/core/toolbox/toolbox.ts:108

Array holding info needed to unbind event handlers. Used for disposing. Ex: [[node, name, func], [node, name, func]].

---

workspace_

protected readonly workspace_: WorkspaceSvg;

Defined in: packages/blockly/core/toolbox/toolbox.ts:111

The workspace this toolbox is on.

Methods

wouldDelete()

wouldDelete(element): boolean;

Defined in: packages/blockly/core/delete_area.ts:59

Returns whether the provided block or bubble would be deleted if dropped on this area. This method should check if the element is deletable and is always called before onDragEnter/onDragOver/onDragExit.

Parameters

Parameter	Type	Description
element	IDraggable	The block or bubble currently being dragged.

Returns

boolean

Whether the element provided would be deleted if dropped on this area.

Inherited from

DeleteArea.wouldDelete

---

onDragOver()

onDragOver(_dragElement): void;

Defined in: packages/blockly/core/drag_target.ts:52

Handles when a cursor with a block or bubble is dragged over this drag target.

Parameters

Parameter	Type	Description
_dragElement	IDraggable	The block or bubble currently being dragged.

Returns

void

Inherited from

DeleteArea.onDragOver

---

shouldPreventMove()

shouldPreventMove(_dragElement): boolean;

Defined in: packages/blockly/core/drag_target.ts:94

Returns whether the provided block or bubble should not be moved after being dropped on this component. If true, the element will return to where it was when the drag started.

Parameters

Parameter	Type	Description
_dragElement	IDraggable	The block or bubble currently being dragged.

Returns

boolean

Whether the block or bubble provided should be returned to drag start.

Inherited from

DeleteArea.shouldPreventMove

---

onShortcut()

onShortcut(_shortcut): boolean;

Defined in: packages/blockly/core/toolbox/toolbox.ts:146

Handles the given keyboard shortcut.

Parameters

Parameter	Type	Description
_shortcut	KeyboardShortcut	The shortcut to be handled.

Returns

boolean

True if the shortcut has been handled, false otherwise.

Implementation of

IKeyboardAccessible.onShortcut

---

init()

init(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:151

Initializes the toolbox

Returns

void

Implementation of

IToolbox.init

---

createDom_()

protected createDom_(workspace): HTMLDivElement;

Defined in: packages/blockly/core/toolbox/toolbox.ts:190

Creates the DOM for the toolbox.

Parameters

Parameter	Type	Description
workspace	WorkspaceSvg	The workspace this toolbox is on.

Returns

HTMLDivElement

The HTML container for the toolbox.

---

createContainer_()

protected createContainer_(): HTMLDivElement;

Defined in: packages/blockly/core/toolbox/toolbox.ts:211

Creates the container div for the toolbox.

Returns

HTMLDivElement

The HTML container for the toolbox.

---

createContentsContainer_()

protected createContentsContainer_(): HTMLDivElement;

Defined in: packages/blockly/core/toolbox/toolbox.ts:224

Creates the container for all the contents in the toolbox.

Returns

HTMLDivElement

The HTML container for the toolbox contents.

---

attachEvents_()

protected attachEvents_(container, contentsContainer): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:240

Adds event listeners to the toolbox container div.

Parameters

Parameter	Type	Description
container	HTMLDivElement	The HTML container for the toolbox.
contentsContainer	HTMLDivElement	The HTML container for the contents of the toolbox.

Returns

void

---

onClick_()

protected onClick_(e): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:279

Handles on click events for when the toolbox or toolbox items are clicked.

Parameters

Parameter	Type	Description
e	PointerEvent	Click event to handle.

Returns

void

---

onKeyDown_()

protected onKeyDown_(e): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:316

Handles key down events for the toolbox.

Parameters

Parameter	Type	Description
e	KeyboardEvent	The key down event.

Returns

void

---

createFlyout_()

protected createFlyout_(): IFlyout;

Defined in: packages/blockly/core/toolbox/toolbox.ts:344

Creates the flyout based on the toolbox layout.

Returns

IFlyout

The flyout for the toolbox.

Throws

If missing a require for Blockly.HorizontalFlyout, Blockly.VerticalFlyout, and no flyout plugin is specified.

---

renderContents_()

protected renderContents_(toolboxDef): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:388

Adds all the toolbox items to the toolbox.

Parameters

Parameter	Type	Description
toolboxDef	ToolboxItemInfo[]	Array holding objects containing information on the contents of the toolbox.

Returns

void

---

addToolboxItem_()

protected addToolboxItem_(toolboxItem): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:444

Adds an item to the toolbox.

Parameters

Parameter	Type	Description
toolboxItem	IToolboxItem	The item in the toolbox.

Returns

void

---

getToolboxItems()

getToolboxItems(): IToolboxItem[];

Defined in: packages/blockly/core/toolbox/toolbox.ts:461

Gets the items in the toolbox.

Returns

IToolboxItem[]

The list of items in the toolbox.

Implementation of

IToolbox.getToolboxItems

---

getClientRect()

getClientRect(): Rect | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:496

Returns the bounding rectangle of the drag target area in pixel units relative to viewport.

Returns

Rect | null

The component's bounding box. Null if drag target area should be ignored.

Overrides

DeleteArea.getClientRect

---

onDragEnter()

onDragEnter(_dragElement): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:530

Handles when a cursor with a block or bubble enters this drag target.

Parameters

Parameter	Type	Description
_dragElement	IDraggable	The block or bubble currently being dragged.

Returns

void

Overrides

DeleteArea.onDragEnter

---

onDragExit()

onDragExit(_dragElement): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:541

Handles when a cursor with a block or bubble exits this drag target.

Parameters

Parameter	Type	Description
_dragElement	IDraggable	The block or bubble currently being dragged.

Returns

void

Overrides

DeleteArea.onDragExit

---

onDrop()

onDrop(_dragElement): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:553

Handles when a block or bubble is dropped on this component. Should not handle delete here.

Parameters

Parameter	Type	Description
_dragElement	IDraggable	The block or bubble currently being dragged.

Returns

void

Overrides

DeleteArea.onDrop

---

updateWouldDelete_()

protected updateWouldDelete_(wouldDelete): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:564

Updates the internal wouldDelete_ state.

Parameters

Parameter	Type	Description
wouldDelete	boolean	The new value for the wouldDelete state.

Returns

void

Overrides

DeleteArea.updateWouldDelete_

---

updateCursorDeleteStyle_()

protected updateCursorDeleteStyle_(addStyle): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:585

Adds or removes the CSS style of the cursor over the toolbox based whether the block or bubble over it is expected to be deleted if dropped (using the internal this.wouldDelete_ property).

Parameters

Parameter	Type	Description
addStyle	boolean	Whether the style should be added or removed.

Returns

void

---

getToolboxItemById()

getToolboxItemById(id): IToolboxItem | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:602

Gets the toolbox item with the given ID.

Parameters

Parameter	Type	Description
id	string	The ID of the toolbox item.

Returns

IToolboxItem | null

The toolbox item with the given ID, or null if no item exists.

---

getWidth()

getWidth(): number;

Defined in: packages/blockly/core/toolbox/toolbox.ts:611

Gets the width of the toolbox.

Returns

number

The width of the toolbox.

Implementation of

IToolbox.getWidth

---

getHeight()

getHeight(): number;

Defined in: packages/blockly/core/toolbox/toolbox.ts:620

Gets the height of the toolbox.

Returns

number

The width of the toolbox.

Implementation of

IToolbox.getHeight

---

getFlyout()

getFlyout(): IFlyout | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:629

Gets the toolbox flyout.

Returns

IFlyout | null

The toolbox flyout.

Implementation of

IToolbox.getFlyout

---

getWorkspace()

getWorkspace(): WorkspaceSvg;

Defined in: packages/blockly/core/toolbox/toolbox.ts:638

Gets the workspace for the toolbox.

Returns

WorkspaceSvg

The parent workspace for the toolbox.

Implementation of

IToolbox.getWorkspace

---

getSelectedItem()

getSelectedItem(): 
  | ISelectableToolboxItem
  | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:647

Gets the selected item.

Returns

| ISelectableToolboxItem | null

The selected item, or null if no item is currently selected.

Implementation of

IToolbox.getSelectedItem

---

getPreviouslySelectedItem()

getPreviouslySelectedItem(): 
  | ISelectableToolboxItem
  | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:657

Gets the previously selected item.

Returns

| ISelectableToolboxItem | null

The previously selected item, or null if no item was previously selected.

---

isHorizontal()

isHorizontal(): boolean;

Defined in: packages/blockly/core/toolbox/toolbox.ts:667

Gets whether or not the toolbox is horizontal.

Returns

boolean

True if the toolbox is horizontal, false if the toolbox is vertical.

Implementation of

IToolbox.isHorizontal

---

position()

position(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:675

Positions the toolbox based on whether it is a horizontal toolbox and whether the workspace is in rtl.

Returns

void

Implementation of

IToolbox.position

---

clearSelection()

clearSelection(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:741

Unhighlights any previously selected item.

Returns

void

Implementation of

IToolbox.clearSelection

---

refreshSelection()

refreshSelection(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:765

Updates the flyout's content without closing it. Should be used in response to a change in one of the dynamic categories, such as variables or procedures.

Returns

void

Implementation of

IToolbox.refreshSelection

---

setVisible()

setVisible(isVisible): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:780

Shows or hides the toolbox.

Parameters

Parameter	Type	Description
isVisible	boolean	True if toolbox should be visible.

Returns

void

Implementation of

IToolbox.setVisible

---

autoHide()

autoHide(onlyClosePopups): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:800

Hides the component. Called in WorkspaceSvg.hideChaff.

Parameters

Parameter	Type	Description
onlyClosePopups	boolean	Whether only popups should be closed. Flyouts should not be closed if this is true.

Returns

void

Implementation of

IAutoHideable.autoHide

---

setSelectedItem()

setSelectedItem(newItem): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:812

Sets the given item as selected. No-op if the item is not selectable.

Parameters

Parameter	Type	Description
newItem	IToolboxItem | null	The toolbox item to select.

Returns

void

Implementation of

IToolbox.setSelectedItem

---

shouldDeselectItem_()

protected shouldDeselectItem_(oldItem, newItem): boolean;

Defined in: packages/blockly/core/toolbox/toolbox.ts:841

Decides whether the old item should be deselected.

Parameters

Parameter	Type	Description
oldItem	| ISelectableToolboxItem | null	The previously selected toolbox item.
newItem	| ISelectableToolboxItem | null	The newly selected toolbox item.

Returns

boolean

True if the old item should be deselected, false otherwise.

---

shouldSelectItem_()

protected shouldSelectItem_(oldItem, newItem): boolean;

Defined in: packages/blockly/core/toolbox/toolbox.ts:859

Decides whether the new item should be selected.

Parameters

Parameter	Type	Description
oldItem	| ISelectableToolboxItem | null	The previously selected toolbox item.
newItem	| ISelectableToolboxItem | null	The newly selected toolbox item.

Returns

boolean

True if the new item should be selected, false otherwise.

---

deselectItem_()

protected deselectItem_(item): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:873

Deselects the given item, marks it as unselected, and updates aria state.

Parameters

Parameter	Type	Description
item	ISelectableToolboxItem	The previously selected toolbox item which should be deselected.

Returns

void

---

selectItem_()

protected selectItem_(oldItem, newItem): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:890

Selects the given item, marks it selected, and updates aria state.

Parameters

Parameter	Type	Description
oldItem	| ISelectableToolboxItem | null	The previously selected toolbox item.
newItem	ISelectableToolboxItem	The newly selected toolbox item.

Returns

void

---

selectItemByPosition()

selectItemByPosition(position): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:909

Selects the toolbox item by its position in the list of toolbox items.

Parameters

Parameter	Type	Description
position	number	The position of the item to select.

Returns

void

Implementation of

IToolbox.selectItemByPosition

---

updateFlyout_()

protected updateFlyout_(oldItem, newItem): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:922

Decides whether to hide or show the flyout depending on the selected item.

Parameters

Parameter	Type	Description
oldItem	| ISelectableToolboxItem | null	The previously selected toolbox item.
newItem	| ISelectableToolboxItem | null	The newly selected toolbox item.

Returns

void

---

dispose()

dispose(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:982

Disposes of this toolbox.

Returns

void

Implementation of

IToolbox.dispose

---

getFocusableElement()

getFocusableElement(): HTMLElement | SVGElement;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1002

See IFocusableNode.getFocusableElement.

Returns

HTMLElement | SVGElement

Implementation of

IFocusableNode.getFocusableElement

---

getFocusableTree()

getFocusableTree(): IFocusableTree;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1008

See IFocusableNode.getFocusableTree.

Returns

IFocusableTree

Implementation of

IFocusableNode.getFocusableTree

---

onNodeFocus()

onNodeFocus(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1013

See IFocusableNode.onNodeFocus.

Returns

void

Implementation of

IFocusableNode.onNodeFocus

---

onNodeBlur()

onNodeBlur(): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1016

See IFocusableNode.onNodeBlur.

Returns

void

Implementation of

IFocusableNode.onNodeBlur

---

canBeFocused()

canBeFocused(): boolean;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1019

See IFocusableNode.canBeFocused.

Returns

boolean

Implementation of

IFocusableNode.canBeFocused

---

getRootFocusableNode()

getRootFocusableNode(): IFocusableNode;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1024

See IFocusableTree.getRootFocusableNode.

Returns

IFocusableNode

Implementation of

IToolbox.getRootFocusableNode

---

getRestoredFocusableNode()

getRestoredFocusableNode(previousNode): IFocusableNode | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1029

See IFocusableTree.getRestoredFocusableNode.

Parameters

Parameter	Type
previousNode	IFocusableNode | null

Returns

IFocusableNode | null

Implementation of

IToolbox.getRestoredFocusableNode

---

getNestedTrees()

getNestedTrees(): IFocusableTree[];

Defined in: packages/blockly/core/toolbox/toolbox.ts:1041

See IFocusableTree.getNestedTrees.

Returns

IFocusableTree[]

Implementation of

IToolbox.getNestedTrees

---

lookUpFocusableNode()

lookUpFocusableNode(id): IFocusableNode | null;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1046

See IFocusableTree.lookUpFocusableNode.

Parameters

Parameter	Type
id	string

Returns

IFocusableNode | null

Implementation of

IToolbox.lookUpFocusableNode

---

onTreeFocus()

onTreeFocus(node, _previousTree): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1051

See IFocusableTree.onTreeFocus.

Parameters

Parameter	Type
node	IFocusableNode
_previousTree	IFocusableTree | null

Returns

void

Implementation of

IToolbox.onTreeFocus

---

onTreeBlur()

onTreeBlur(nextTree): void;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1069

See IFocusableTree.onTreeBlur.

Parameters

Parameter	Type
nextTree	IFocusableTree | null

Returns

void

Implementation of

IToolbox.onTreeBlur

---

getNavigator()

getNavigator(): ToolboxNavigator;

Defined in: packages/blockly/core/toolbox/toolbox.ts:1081

Returns the Navigator instance to use to move between items in this toolbox.

Returns

ToolboxNavigator

Implementation of

IToolbox.getNavigator