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class anychart.core.Base Improve this Doc

Class implements all the work with consistency states. invalidate() and markConsistent() are used to change states. isConsistent() and hasInvalidationState() are used to check states.

Methods Overview

Events
listen()Adds an event listener.
listenOnce()Adds a single time event listener.
removeAllListeners()Remove all listeners.
unlisten()Remove of the listener.
unlistenByKey()Remove of the listener by the key.

Methods Description

listen

Adds an event listener to an implementing object.

Params:

Name Type Description
type string The event type id.
listener function Callback method.
useCapture boolean Whether to fire in capture phase (defaults to false).
listenerScope scope Object in whose scope to call the listener.

Returns:

Object - Unique key for the listener.

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listenOnce

Adds an event listener to an implementing object.

Params:

Name Type Description
type string The event type id.
listener function Callback method.
useCapture boolean Whether to fire in capture phase (defaults to false).
listenerScope scope Object in whose scope to call the listener.

Returns:

Object - Unique key for the listener.

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removeAllListeners

Removes all listeners from an object. You can also optionally remove listeners of some particular type.

Params:

Name Type Description
type string Type of event to remove, default is to remove all types.

Returns:

number - Number of listeners removed.

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unlisten

Removes a listener added using listen() or listenOnce() methods.

Params:

Name Type Description
type string The event type id.
listener function Callback method.
useCapture boolean Whether to fire in capture phase (defaults to false).
listenerScope scope Object in whose scope to call the listener.

Returns:

boolean - Whether any listener was removed.

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unlistenByKey

Removes an event listener which was added with listen() by the key returned by listen() or listenOnce().

Params:

Name Type Description
key Object The key returned by listen() or listenOnce().

Returns:

boolean - Whether any listener was removed.

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