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Difference between revisions of "Events"

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==What are events?==
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#REDIRECT [[:Category:Events_and_Listeners]]
Events are triggered in various places of the core phpBB code. Listeners in extensions can be subscribed to these events. They are able to execute code whenever the respective event has occured.  For more information, see the wiki article for [[listeners]].
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Former names for events are "hook location" and "ledge".
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==Why do we need events?==
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They link the identifiers to the point where the code needs modifying and as such they are vital.
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== Naming ==
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{|
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|-
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! Name !! Explanation
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|-
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| [[Events]] || Events are triggered in various places of the core phpBB code. Listeners in extensions can be subscribed to these events. They are able to execute code whenever the respective event has occured.  For more information, see the wiki article for [[listeners]].
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|-
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| [[Listeners]] || Listeners are triggered by events. They can process incoming data and manipulate variables in the scope of the event. So they can change phpBB's behaviour, add new functionality or if used in the context of templates, modify the output. An alternative name for listeners are "hooks".
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|-
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| Subscriber || A subscriber takes care of letting the dispatcher know about [[listeners]] and which events they want to listen to.
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|-
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| Dispatcher || The event dispatcher takes care of passing control flow to the [[listeners]] when an event occurs that they have been subscribed to by a subscriber.
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|}
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[[Category:Events and Listeners]]
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Latest revision as of 14:25, 20 March 2012