Toolbar | grapher-ts

Class that renders toolbar for graph drawing tool. Defines modes of operation for the tool. Handles transition between modes. Notifies observers about mode changes.

Hierarchy

Toolbar

Index

Constructors

constructor

Properties

Methods

Constructors

constructor

new Toolbar(container: HTMLElement, observers?: ToolbarObserver[]): Toolbar

- Defined in visual/toolbar.ts:14
Parameters
- container: HTMLElement
  
  HTMLElement within toolbar will be rendered.
- Default value observers: ToolbarObserver[] = []
  
  Initial observers to be notified when mode changes.
Returns Toolbar

Properties

Private buttons

buttons: Map<ToolbarMode, HTMLElement>

Buttons that handle control of operation mode.

currentMode

currentMode: ToolbarMode

Current operation mode of the tool.

Private observers

observers: ToolbarObserver[]

Observers to be notified when mode changes.

Methods

changeMode

changeMode(newMode: ToolbarMode): void

- Defined in visual/toolbar.ts:127
Change current mode of operation. Notifies observers about change.

Parameters
- newMode: ToolbarMode
  
  Mode to switch to.
Returns void

Protected onClearPress

onClearPress(): void

- Defined in visual/toolbar.ts:145
Handle toolbar "Clear" button press by notifying observers about it.

Returns void

registerObserver

registerObserver(observer: ToolbarObserver): void

- Defined in visual/toolbar.ts:109
Registers a new observer to be notified when toolbar mode changes.

Parameters
- observer: ToolbarObserver
  
  Observer to be registered.
Returns void

removeObserver

removeObserver(observerToRemove: ToolbarObserver): void

- Defined in visual/toolbar.ts:117
Removes an observer from observers that are notfied of toolbar mode changes.

Parameters
- observerToRemove: ToolbarObserver
  
  Observer to be removed.
Returns void

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