Namespace JXG.EventEmitter

↳ JXG.EventEmitter

Defined in: event.js.

Namespace Summary
Constructor Attributes	Constructor Name and Description
	JXG.EventEmitter Event namespace

Field Summary
Field Attributes	Field Name and Description
<static>	JXG.EventEmitter.eventHandlers Holds the registered event handlers.
<static>	JXG.EventEmitter.suspended Events can be suspended to prevent endless loops.

Method Summary
Method Attributes	Method Name and Description
<static>	JXG.EventEmitter.eventify(o) Implements the functionality from this interface in the given object.
<static>	JXG.EventEmitter.off(event, handler) Unregister an event handler.
<static>	JXG.EventEmitter.on(event, handler, context) Register a new event handler.
<static>	JXG.EventEmitter.trigger(event, args) Triggers all event handlers of this element for a given event.

Namespace Detail

JXG.EventEmitter

Event namespace

Field Detail

<static> {Object} JXG.EventEmitter.eventHandlers

Holds the registered event handlers.

<static> {Object} JXG.EventEmitter.suspended

Events can be suspended to prevent endless loops.

Method Detail

<static> JXG.EventEmitter.eventify(o)

Implements the functionality from this interface in the given object. All objects getting their event handling capabilities from this method should document it by adding the on, off, triggerEventHandlers via the borrows tag as methods to their documentation:

@borrows JXG.EventEmitter#on as this.on

Parameters:
{Object} o

<static> JXG.EventEmitter.off(event, handler)

Unregister an event handler.

Parameters:
{String} event
{Function} handler Optional

Returns:: Reference to the object.

<static> JXG.EventEmitter.on(event, handler, context)

Register a new event handler. For a list of possible events see documentation of the elements and objects implementing the EventEmitter interface. As of version 1.5.0, it is only possible to access the element via "this" if the event listener is supplied as regular JavaScript function and not as arrow function.

Parameters:
{String} event
{Function} handler
{Object} context Optional: The context the handler will be called in, default is the element itself.

Returns:: Reference to the object.

<static> JXG.EventEmitter.trigger(event, args)

Triggers all event handlers of this element for a given event.

Parameters:
{Array} event
{Array} args: The arguments passed onto the event handler

Returns:: Reference to the object.

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Namespace JXG.EventEmitter