[DOCS] Expand developer Event documentation
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@ -45,10 +45,10 @@ Example 1: Adding elements to the core UI
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* @param array $vars Input from the caller/emitter
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* @param array $res I/O parameter used to accumulate or return values from the listener to the emitter
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*
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* @return bool true if not handled or if the handling should be accumulated with other listeners,
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* @return \EventResult true if not handled or if the handling should be accumulated with other listeners,
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* false if handled well enough and no other listeners are needed
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*/
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public function onViewAttachmentImage(array $vars, array &$res): bool
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public function onViewAttachmentImage(array $vars, array &$res): \EventResult
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{
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$res[] = Formatting::twigRenderFile('imageEncoder/imageEncoderView.html.twig', ['attachment' => $vars['attachment'], 'thumbnail_parameters' => $vars['thumbnail_parameters']]);
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return Event::stop;
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@ -74,11 +74,25 @@ Event::handle('ResizerAvailable', [&$event_map]);
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/**
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* @param array $event_map output
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*
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* @return bool event hook
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* @return \EventResult event hook
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*/
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public function onResizerAvailable(array &$event_map): bool
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public function onResizerAvailable(array &$event_map): \EventResult
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{
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$event_map['image'] = 'ResizeImagePath';
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return Event::next;
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}
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```
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Example 3: Default action
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-----
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An event can be emited to perform an action, but still have a fallback as such:
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> Event emitter
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```php
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if (Event::handle('EventName', $args) !== Event::stop): \EventResult
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{
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// Do default action, as no-one claimed authority on handling this event
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}
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```
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