Documentation

SchemaEventArgs extends EventArgs
in package

Base class for schema related events.

Tags
deprecated

Table of Contents

Properties

$_emptyEventArgsInstance  : EventArgs|null
Single instance of EventArgs.
$preventDefault  : bool

Methods

getEmptyInstance()  : EventArgs
Gets the single, empty and immutable EventArgs instance.
isDefaultPrevented()  : bool
preventDefault()  : SchemaEventArgs

Properties

$_emptyEventArgsInstance

Single instance of EventArgs.

private static EventArgs|null $_emptyEventArgsInstance

Methods

getEmptyInstance()

Gets the single, empty and immutable EventArgs instance.

public static getEmptyInstance() : EventArgs

This instance will be used when events are dispatched without any parameter, like this: EventManager::dispatchEvent('eventname');

The benefit from this is that only one empty instance is instantiated and shared (otherwise there would be instances for every dispatched in the abovementioned form).

Tags
link
https://msdn.microsoft.com/en-us/library/system.eventargs.aspx
see
EventManager::dispatchEvent
Return values
EventArgs

isDefaultPrevented()

public isDefaultPrevented() : bool
Return values
bool

        
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