import MouseHandler from 'canvas-graph-creator/src/js/util/mouse-handler.js'

public class | source

MouseHandler

Mouse event handler. Calls the appropriate event handler for the current tool based on user actions.

Constructor Summary

Public Constructor
public	constructor(graph: Graph) Constructs a MouseHandler instance.

Member Summary

Public Members
public	clickStartX: *
public	clickStartY: *
public	draggedObject: *
public	graph: *
public	isDragging: boolean
public	isRightDragging: boolean
public	mousePressed: boolean
public	rightClickStartX: *
public	rightClickStartY: *
public	rightMousePressed: boolean
public	selectedObject: *
public	wasRightDragging: boolean

Method Summary

Public Methods
public	contextAdd(arg: string, x: number, y: number) Handle the context menu "add" action.
public	contextComponent(event: Event, x: number, y: number): Node \| Edge \| Label Get the graph component that is under the mouse when the context menu event was triggered.
public	contextDelete() Handle the context menu "delete" action.
public	contextSelect(event: Event, currentTool: Tool, x: number, y: number) Handle context menu object selection.
public	contextToggle(arg: string) Handle the context menu "toggle" action.
public	contextmenuEventListener(event: Event, x: number, y: number, contextMenu: ContextMenu) Handles the contextmenu event.
public	downListener(event: Event, currentTool: Tool, x: number, y: number) Handles the mousedown event for the left mouse button.
public	moveListener(event: Event, currentTool: Tool, x: number, y: number) Handles the mousemove event for the left mouse button.
public	resetGraph(newGraph: Graph) Update the graph reference.
public	rightDownListener(event: Event, x: number, y: number) Handles the mousedown event for the right mouse button.
public	rightMoveListener(event: Event, x: number, y: number) Handles the mousemove event for the right mouse button.
public	rightUpListener(event: Event, x: number, y: number) Handles the mouseup event for the right mouse button.
public	upListener(event: Event, currentTool: Tool, x: number, y: number) Handles the mouseup event for the left mouse button.

Public Constructors

public constructor(graph: Graph) source

Constructs a MouseHandler instance.

Params:

Name	Type	Attribute	Description
graph	Graph		The current Graph object.

Public Members

public clickStartX: * source

public clickStartY: * source

public draggedObject: * source

public graph: * source

public isDragging: boolean source

public isRightDragging: boolean source

public mousePressed: boolean source

public rightClickStartX: * source

public rightClickStartY: * source

public rightMousePressed: boolean source

public selectedObject: * source

public wasRightDragging: boolean source

Public Methods

public contextAdd(arg: string, x: number, y: number) source

Handle the context menu "add" action.

Params:

Name	Type	Attribute	Description
arg	string		Name of object to add.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public contextComponent(event: Event, x: number, y: number): Node | Edge | Label source

Get the graph component that is under the mouse when the context menu event was triggered.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

Return:

Node | Edge | Label

The object that is under the mouse.

public contextDelete() source

Handle the context menu "delete" action.

public contextSelect(event: Event, currentTool: Tool, x: number, y: number) source

Handle context menu object selection.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
currentTool	Tool		The currently selected tool.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public contextToggle(arg: string) source

Handle the context menu "toggle" action.

Params:

Name	Type	Attribute	Description
arg	string		Name of the field to toggle.

public contextmenuEventListener(event: Event, x: number, y: number, contextMenu: ContextMenu) source

Handles the contextmenu event.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).
contextMenu	ContextMenu		ContextMenu object.

public downListener(event: Event, currentTool: Tool, x: number, y: number) source

Handles the mousedown event for the left mouse button.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
currentTool	Tool		The currently selected tool.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public moveListener(event: Event, currentTool: Tool, x: number, y: number) source

Handles the mousemove event for the left mouse button.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
currentTool	Tool		The currently selected tool.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public resetGraph(newGraph: Graph) source

Update the graph reference.

Params:

Name	Type	Attribute	Description
newGraph	Graph		The new Graph object.

public rightDownListener(event: Event, x: number, y: number) source

Handles the mousedown event for the right mouse button.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public rightMoveListener(event: Event, x: number, y: number) source

Handles the mousemove event for the right mouse button.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public rightUpListener(event: Event, x: number, y: number) source

Handles the mouseup event for the right mouse button.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).

public upListener(event: Event, currentTool: Tool, x: number, y: number) source

Handles the mouseup event for the left mouse button.

Params:

Name	Type	Attribute	Description
event	Event		The Event object from the event listener.
currentTool	Tool		The currently selected tool.
x	number		Mouse x-coordinate (in canvas coordinates).
y	number		Mouse y-coordinate (in canvas coordinates).