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This document describes how event hooks work in the Translate extension;
how to add hooks for an event; and how to run hooks for an event.
For a more comprehensive guide to hooks, navigate to your root MediaWiki
directory, and then find /docs/hooks.txt.
== Rationale ==
Hooks allow us to decouple optionally-run code from code that is run for
everyone. It allows MediaWiki hackers, third-party developers and local
administrators to define code that will be run at certain points in the mainline
code, and to modify the data run by that mainline code. Hooks can keep mainline
code simple, and make it easier to write extensions. Hooks are a principled
alternative to local patches.
== Writing hooks ==
=== PHP hooks ===
For a guide to PHP hooks, navigate to your root MediaWiki
directory, and then find docs/hooks.txt.
=== JavaScript hooks ===
JavaScript hooks for the Translate extension use the standard mw.hook API provided
by MediaWiki.
Hooks are prefixed with mw.translate as a convention.
== Events and parameters ==
This is a list of known events and parameters; please add to it if you're going
to add events to the Translate extension.
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=== PHP events ===
;Translate:MessageGroupStats:isIncluded: Controls whether message group is shown for a given language in language or message group statistics. Mostly used internally by Translate to hide discouraged groups and groups restricted to certain languages.
string $groupId: Message group id
string $code: Language code
;TranslateBeforeAddModules: Provides an opportunity to load extra modules
array &$modules: List of resource loader module names
;TranslateEventMessageMembershipChange: When group gets new messages or loses messages
MessageHandle $handle
array $old Previous groups
array $new Current groups
;TranslateEventMessageGroupStateChange: Event triggered when a message group workflow state is changed in a language
MessageGroup $group: Message group instance
string $code: Language code
string $oldState
string $newState
;TranslateEventTranslationReview: Event triggered when a translation is proofread
MessageHandle $handle
;TranslateGetBoxes: Provides an opportunity to add or remove "boxes" (translation helpers) from the translation interface
MessageGroup $group: The message group being worked on
MessageHandle $handle: An object representing the translation page (e.g. 'MediaWiki:Example/qqq')
array &$boxes: An associative array to be appended to (format: 'name' => 'some HTML string')
;TranslateGetAPIMessageGroupsParameterList: Allows extra parameters to be added to the action=query&meta=messagegroups module
array &$params: An associative array of possible parameters (name => details; see ApiQueryMessageGroups.php for correct spacing)
;TranslateGetAPIMessageGroupsPropertyDescs: Allows extra properties to be added to captured by action=query&meta=messagegroups&mgprop=foo|bar|bat module
array &$properties: An associative array of properties, name => description (which is ignored).
;TranslateGetSpecialTranslateOptions: Provides an opportunity for overriding task values
array &$defaults: Associative array of default values
array &$nondefaults: Associative array of nondefault (override) values
;Translate:GettextFFS:headerFields: Allows to customize headers of exported Gettext files per group. Certain X-headers nor Plural-Forms cannot be customized.
array &$headers: List of prefilled headers. You can remove, change or add new headers.
MessageGroup $group: Message group instance
string $code: Language code
;TranslateMessageGroupPathVariables: Allows to manipulate the list of variables for message group path patterns.
MessageGroup $group
array &$variables: Variable name => replacement
;Translate:newTranslation: Event triggered when non-fuzzy translation has been made
MessageHandle $handle
int $revisionId
string $text: Content of the new translation
User $user: User who created or changed the translation
;TranslatePostInitGroups: Hook to register new message groups to Translate. Manual cache clear may be needed to have this hook executed.
array &$groups: Map of message group id to message group instance
array &$deps: List of dependencies as supported by DependecyWrapper class from MediaWiki
array &$autoload: List of autoloaded classes. Key is the name of the class and value is filename.
;TranslateInitGroupLoaders: Hook to register new message group loaders that can then load MessageGroups for translation purpose.
array &$groupLoader: List of message group loader class names that implement the MessageGroupLoader
;TranslatePrefillTranslation: Provides an opportunity for a new translation to start not from as a carte blanche (the default) but from some prefilled string
string &$translation: The translation string as it stands
MessageHandle $handle: The current MessageHandle object
;TranslateProcessAPIMessageGroupsProperties: Allows exrra property requests to be acted upon, and the new new properties returned
array &$a: Associative array of the properties of $group that will be returned
array $props: Associative array ($name => true) of properties the user has specifically requested
array $params: Parameter input by the user (unprefixed name => value)
MessageGroup $g: The group in question
;TranslateSupportedLanguages: Allows removing languages from language selectors. For adding $wgExtraLanguage names is recommended.
array &$list: List of languages indexed by language code
string $language: Language code of the language of which language names are in
;TranslateTranslationAids: Make new translation aids available to any message group (which must choose an implementation in its getTranslationAids() method).
array &$types: List of translation aid identifiers, numerically indexed
;Translate:modifyMessageGroupStates: Allow hooks to change workflow states depending on the group's ID.
string $groupId: ID of the current message group.
array &$conf: Workflow states, can be modified.
=== JavaScript events ===
;mw.translate.editor.afterSubmit: Provides an opportunity to modify a Translate translation form immediately after it is submitted
jQuery form: The form that has just been submitted
;mw.translate.editor.afterEditorShown: Provides an opportunity to manipulate the editing interface once it's shown
jQuery translateEditor.$editor: The current translation-editing form
;mw.translate.editor.beforeSubmit: Provides an opportunity to modify a Translate translation form immediately before it is submitted
jQuery form: The form being submitted
;mw.translate.messagetable.formatMessageBeforeTable: Provides an opportunity to manipulate the display of translation strings (messages) in the main table
object message: The message object, with a range of useful (and manipulable) properties
;mw.translate.editor.showTranslationHelpers: Provides an opportunity to handle custom translation helpers
object result.helpers: JSON subset focusing on the helpers returned e.g. result.helpers.definition
jQuery translateEditor.$editor: The current translation-editing form
;wikipage.content: See this hook in MediaWiki core. Fired for message documentation in the translation editor.
jQuery $content
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