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14 lines
898 B
Plaintext
14 lines
898 B
Plaintext
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chapter.of: Extending the Store
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created: 20140710184910226
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modified: 20140717201408167
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sub.num: 1
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tags: doc new
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title: Event Mechanism
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Most of the following mechanisms need a way to get notified, when anything in the wiki store changes.
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The core -plug-in adds an event system to the bare wiki store.
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The event system provides the ability to listen to events. The most important is the "change" event which notifies the listeners when tiddlers have changed, with a list of the changed tiddlers.
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The event mechanism is one of the few mechanisms which needs a hook at the microkernel:
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The microkernel contains an empty function "enqueueTiddlerEvent(event)" and calls this function when a tiddler is added or deleted.
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The event mechanism from the core plug-in overwrites this function with it's own implementation.
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The functions providing the event system are added via the [[wikimethod module type]].
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