mediawiki-extensions-Discus.../modules/controller.js

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'use strict';
var
$pageContainer, linksController,
pageThreads,
lastControllerScrollOffset,
featuresEnabled = mw.config.get( 'wgDiscussionToolsFeaturesEnabled' ) || {},
MemoryStorage = require( './MemoryStorage.js' ),
storage = new MemoryStorage( mw.storage.session.store ),
Parser = require( './Parser.js' ),
ThreadItemSet = require( './ThreadItemSet.js' ),
CommentDetails = require( './CommentDetails.js' ),
ReplyLinksController = require( './ReplyLinksController.js' ),
logger = require( './logger.js' ),
utils = require( './utils.js' ),
highlighter = require( './highlighter.js' ),
topicSubscriptions = require( './topicsubscriptions.js' ),
pageHandlersSetup = false,
pageDataCache = {};
mw.messages.set( require( './controller/contLangMessages.json' ) );
/**
* Get an MW API instance
*
* @return {mw.Api} API instance
*/
function getApi() {
return new mw.Api( {
parameters: {
formatversion: 2,
uselang: mw.config.get( 'wgUserLanguage' )
}
} );
}
/**
* Get various pieces of page metadata.
*
* This method caches responses. If you call it again with the same parameters, you'll get the exact
* same Promise object, and no API request will be made.
*
* @param {string} pageName Page title
* @param {number} oldId Revision ID
* @param {boolean} [isNewTopic=false]
* @return {jQuery.Promise}
*/
function getPageData( pageName, oldId, isNewTopic ) {
var api = getApi();
pageDataCache[ pageName ] = pageDataCache[ pageName ] || {};
if ( pageDataCache[ pageName ][ oldId ] ) {
return pageDataCache[ pageName ][ oldId ];
}
var lintPromise, transcludedFromPromise;
if ( oldId && !isNewTopic ) {
lintPromise = api.get( {
action: 'query',
list: 'linterrors',
lntcategories: 'fostered',
lntlimit: 1,
lnttitle: pageName
} ).then( function ( response ) {
return OO.getProp( response, 'query', 'linterrors' ) || [];
} );
transcludedFromPromise = api.get( {
action: 'discussiontoolspageinfo',
page: pageName,
oldid: oldId
} ).then( function ( response ) {
return OO.getProp( response, 'discussiontoolspageinfo', 'transcludedfrom' ) || {};
} );
} else {
lintPromise = $.Deferred().resolve( [] ).promise();
transcludedFromPromise = $.Deferred().resolve( {} ).promise();
}
var veMetadataPromise = api.get( {
action: 'visualeditor',
paction: 'metadata',
page: pageName
} ).then( function ( response ) {
return OO.getProp( response, 'visualeditor' ) || [];
} );
pageDataCache[ pageName ][ oldId ] = $.when( lintPromise, transcludedFromPromise, veMetadataPromise )
.then( function ( linterrors, transcludedfrom, metadata ) {
return {
linterrors: linterrors,
transcludedfrom: transcludedfrom,
metadata: metadata
};
}, function () {
// Clear on failure
pageDataCache[ pageName ][ oldId ] = null;
// Let caller handle the error
return $.Deferred().rejectWith( this, arguments );
} );
return pageDataCache[ pageName ][ oldId ];
}
/**
* Check if a given thread item on a page can be replied to
*
* @param {string} pageName Page title
* @param {number} oldId Revision ID
* @param {ThreadItem} threadItem Thread item
* @return {jQuery.Promise} Resolved with a CommentDetails object if the comment appears on the page.
* Rejects with error data if the comment is transcluded, or there are lint errors on the page.
*/
function checkThreadItemOnPage( pageName, oldId, threadItem ) {
var isNewTopic = threadItem.id === utils.NEW_TOPIC_COMMENT_ID;
return getPageData( pageName, oldId, isNewTopic )
.then( function ( response ) {
var metadata = response.metadata,
lintErrors = response.linterrors,
transcludedFrom = response.transcludedfrom;
if ( !isNewTopic ) {
// First look for data by the thread item's ID. If not found, also look by name.
// Data by ID may not be found due to differences in headings (e.g. T273413, T275821),
// or if a thread item's parent changes.
// Data by name might be combined from two or more thread items, which would only allow us to
// treat them both as transcluded from unknown source, unless we check ID first.
var isTranscludedFrom = transcludedFrom[ threadItem.id ];
if ( isTranscludedFrom === undefined ) {
isTranscludedFrom = transcludedFrom[ threadItem.name ];
}
if ( isTranscludedFrom === undefined ) {
// The thread item wasn't found when generating the "transcludedfrom" data,
// so we don't know where the reply should be posted. Just give up.
return $.Deferred().reject( 'discussiontools-commentid-notfound-transcludedfrom', { errors: [ {
code: 'discussiontools-commentid-notfound-transcludedfrom',
html: mw.message( 'discussiontools-error-comment-disappeared' ).parse() +
'<br>' +
mw.message( 'discussiontools-error-comment-disappeared-reload' ).parse()
} ] } ).promise();
} else if ( isTranscludedFrom ) {
var mwTitle = isTranscludedFrom === true ? null : mw.Title.newFromText( isTranscludedFrom );
// If this refers to a template rather than a subpage, we never want to edit it
var follow = mwTitle && mwTitle.getNamespaceId() !== mw.config.get( 'wgNamespaceIds' ).template;
var transcludedErrMsg;
if ( follow ) {
transcludedErrMsg = mw.message(
'discussiontools-error-comment-is-transcluded-title',
mwTitle.getPrefixedText()
).parse();
} else {
transcludedErrMsg = mw.message(
'discussiontools-error-comment-is-transcluded',
// eslint-disable-next-line no-jquery/no-global-selector
$( '#ca-edit' ).text()
).parse();
}
return $.Deferred().reject( 'comment-is-transcluded', { errors: [ {
data: {
transcludedFrom: isTranscludedFrom,
follow: follow
},
code: 'comment-is-transcluded',
html: transcludedErrMsg
} ] } ).promise();
}
if ( lintErrors.length ) {
// We currently only request the first error
var lintType = lintErrors[ 0 ].category;
return $.Deferred().reject( 'lint', { errors: [ {
code: 'lint',
html: mw.message( 'discussiontools-error-lint',
'https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Lint_errors/' + lintType,
'https://www.mediawiki.org/wiki/Special:MyLanguage/Help_talk:Lint_errors/' + lintType,
mw.util.getUrl( pageName, { action: 'edit', lintid: lintErrors[ 0 ].lintId } ) ).parse()
} ] } ).promise();
}
}
if ( !metadata.canEdit ) {
return $.Deferred().reject( 'permissions-error', { errors: [ {
code: 'permissions-error',
html: metadata.notices[ 'permissions-error' ]
} ] } ).promise();
}
return new CommentDetails( pageName, oldId, metadata.notices );
} );
}
/**
* Get a promise which resolves with editor checkbox data
*
* @param {string} pageName Page title
* @param {number} oldId Revision ID
* @return {jQuery.Promise} See ve.init.mw.ArticleTargetLoader#createCheckboxFields
*/
function getCheckboxesPromise( pageName, oldId ) {
return getPageData(
pageName,
oldId
).then( function ( pageData ) {
var data = pageData.metadata,
checkboxesDef = {};
mw.messages.set( data.checkboxesMessages );
// Only show the watch checkbox for now
if ( 'wpWatchthis' in data.checkboxesDef ) {
checkboxesDef.wpWatchthis = data.checkboxesDef.wpWatchthis;
// Override the label with a more verbose one to distinguish this from topic subscriptions (T290712)
checkboxesDef.wpWatchthis[ 'label-message' ] = 'discussiontools-replywidget-watchthis';
}
return mw.loader.using( 'ext.visualEditor.targetLoader' ).then( function () {
return mw.libs.ve.targetLoader.createCheckboxFields( checkboxesDef );
} );
// TODO: createCheckboxField doesn't make links in the label open in a new
// window as that method currently lives in ve.utils
} );
}
/**
* Initialize Discussion Tools features
*
* @param {jQuery} $container Page container
* @param {Object<string,Mixed>} [state] Page state data object
* @param {string} [state.repliedTo] The comment ID that was just replied to
*/
function init( $container, state ) {
var
activeCommentId = null,
activeController = null,
// Loads later to avoid circular dependency
CommentController = require( './CommentController.js' ),
NewTopicController = require( './NewTopicController.js' );
// Lazy-load postEdit module, may be required later (on desktop)
mw.loader.using( 'mediawiki.action.view.postEdit' );
$pageContainer = $container;
linksController = new ReplyLinksController( $pageContainer );
var parser = new Parser( require( './parser/data.json' ) );
var commentNodes = $pageContainer[ 0 ].querySelectorAll( '[data-mw-comment]' );
pageThreads = ThreadItemSet.static.newFromAnnotatedNodes( commentNodes, parser );
if ( featuresEnabled.topicsubscription ) {
topicSubscriptions.initTopicSubscriptions( $container );
}
/**
* Setup comment controllers for each comment, and the new topic controller
*
* @param {string} commentId Comment ID, or NEW_TOPIC_COMMENT_ID constant
* @param {jQuery} $link Add section link for new topic controller
* @param {string} [mode] Optionally force a mode, 'visual' or 'source'
* @param {boolean} [hideErrors] Suppress errors, e.g. when restoring auto-save
* @param {boolean} [suppressNotifications] Don't notify the user if recovering auto-save
*/
function setupController( commentId, $link, mode, hideErrors, suppressNotifications ) {
var commentController, $addSectionLink;
if ( commentId === utils.NEW_TOPIC_COMMENT_ID ) {
// eslint-disable-next-line no-jquery/no-global-selector
$addSectionLink = $( '#ca-addsection a' );
// When opening new topic tool using any link, always activate the link in page tabs too
$link = $link.add( $addSectionLink );
commentController = new NewTopicController( $pageContainer, pageThreads );
} else {
commentController = new CommentController( $pageContainer, pageThreads.findCommentById( commentId ), pageThreads );
}
activeCommentId = commentId;
activeController = commentController;
linksController.setActiveLink( $link );
commentController.on( 'teardown', function ( teardownMode ) {
activeCommentId = null;
activeController = null;
if ( teardownMode !== 'refresh' ) {
linksController.clearActiveLink();
}
if ( teardownMode === 'abandoned' ) {
linksController.focusLink( $link );
}
} );
commentController.on( 'reloadPage', function () {
mw.dt.initState.newCommentIds = commentController.newComments.map( function ( cmt ) {
return cmt.id;
} );
// Teardown active reply widget(s)
commentController.replyWidgetPromise.then( function ( replyWidget ) {
lastControllerScrollOffset = $( commentController.newListItem ).offset().top;
replyWidget.teardown( 'refresh' );
// Only fetch the last now "good" revision, on which we know the parent comment still exists.
// As we poll frequently, this will almost always be the lastet revision.
refreshPageContents( commentController.oldId );
} );
} );
commentController.setup( mode, hideErrors, suppressNotifications );
if ( lastControllerScrollOffset ) {
$( document.documentElement ).scrollTop(
$( document.documentElement ).scrollTop() +
( $( commentController.newListItem ).offset().top - lastControllerScrollOffset )
);
lastControllerScrollOffset = null;
}
}
// Hook up each link to open a reply widget
//
// TODO: Allow users to use multiple reply widgets simultaneously.
// Currently submitting a reply from one widget would also destroy the other ones.
linksController.on( 'link-click', function ( commentId, $link ) {
// If the reply widget is already open, activate it.
// Reply links are also made unclickable using 'pointer-events' in CSS, but that doesn't happen
// for new section links, because we don't have a good way of visually disabling them.
// (And it also doesn't work on IE 11.)
if ( activeCommentId === commentId ) {
activeController.showAndFocus();
return;
}
// If this is a new topic link, and a reply widget is open, attempt to close it first.
var teardownPromise;
if ( activeController && commentId === utils.NEW_TOPIC_COMMENT_ID ) {
teardownPromise = activeController.replyWidget.tryTeardown();
} else {
teardownPromise = $.Deferred().resolve();
}
teardownPromise.then( function () {
// If another reply widget is open (or opening), do nothing.
if ( activeController ) {
return;
}
setupController( commentId, $link );
} );
} );
// Restore autosave
( function () {
var mode, $link;
for ( var i = 0; i < pageThreads.threadItems.length; i++ ) {
var comment = pageThreads.threadItems[ i ];
if ( storage.get( 'reply/' + comment.id + '/saveable' ) ) {
mode = storage.get( 'reply/' + comment.id + '/mode' );
$link = $( commentNodes[ i ] );
setupController( comment.id, $link, mode, true, !state.firstLoad );
break;
}
}
if ( storage.get( 'reply/' + utils.NEW_TOPIC_COMMENT_ID + '/saveable' ) ) {
mode = storage.get( 'reply/' + utils.NEW_TOPIC_COMMENT_ID + '/mode' );
setupController( utils.NEW_TOPIC_COMMENT_ID, $( [] ), mode, true, !state.firstLoad );
} else if ( mw.config.get( 'wgDiscussionToolsStartNewTopicTool' ) ) {
setupController( utils.NEW_TOPIC_COMMENT_ID, $( [] ) );
}
}() );
// For debugging (now unused in the code)
mw.dt.pageThreads = pageThreads;
var promise = OO.ui.isMobile() && mw.loader.getState( 'mobile.init' ) ?
mw.loader.using( 'mobile.init' ) :
$.Deferred().resolve().promise();
promise.then( function () {
if ( state.repliedTo ) {
highlighter.highlightPublishedComment( pageThreads, state.repliedTo );
if ( state.repliedTo === utils.NEW_TOPIC_COMMENT_ID ) {
mw.hook( 'postEdit' ).fire( {
message: mw.msg( 'discussiontools-postedit-confirmation-topicadded', mw.user )
} );
} else {
if ( OO.ui.isMobile() ) {
mw.notify( mw.msg( 'discussiontools-postedit-confirmation-published', mw.user ) );
} else {
// postEdit is currently desktop only
mw.hook( 'postEdit' ).fire( {
message: mw.msg( 'discussiontools-postedit-confirmation-published', mw.user )
} );
}
}
} else if ( state.newCommentIds ) {
highlighter.highlightNewComments( pageThreads, true, state.newCommentIds );
}
// Check topic subscription states if the user has automatic subscriptions enabled
// and has recently edited this page.
if ( featuresEnabled.autotopicsub && mw.user.options.get( 'discussiontools-autotopicsub' ) ) {
topicSubscriptions.updateAutoSubscriptionStates( $container, pageThreads, state.repliedTo );
}
} );
// Preload page metadata.
// TODO: Isn't this too early to load it? We will only need it if the user tries replying...
getPageData(
mw.config.get( 'wgRelevantPageName' ),
mw.config.get( 'wgCurRevisionId' )
);
// Page-level handlers only need to be setup once
if ( !pageHandlersSetup ) {
$( window ).on( 'popstate', function () {
highlighter.highlightTargetComment( pageThreads, true );
} );
// eslint-disable-next-line no-jquery/no-global-selector
$( 'body' ).on( 'click', function ( e ) {
if ( utils.isUnmodifiedLeftClick( e ) ) {
highlighter.clearHighlightTargetComment( pageThreads );
}
} );
pageHandlersSetup = true;
}
if ( state.firstLoad ) {
highlighter.highlightTargetComment( pageThreads );
}
}
/**
* Update the contents of the page with the data from an action=parse API response.
*
* @param {jQuery} $container Page container
* @param {Object} data Data from action=parse API
*/
function updatePageContents( $container, data ) {
var $content = $( $.parseHTML( data.parse.text ) );
$container.find( '.mw-parser-output' ).first().replaceWith( $content );
mw.config.set( data.parse.jsconfigvars );
mw.loader.load( data.parse.modulestyles );
mw.loader.load( data.parse.modules );
mw.config.set( {
wgCurRevisionId: data.parse.revid,
wgRevisionId: data.parse.revid
} );
// TODO update categories, displaytitle, lastmodified
// We may not be able to use prop=displaytitle without making changes in the action=parse API,
// VE API has some confusing code that changes the HTML escaping on it before returning???
// We need our init code to run after everyone else's handlers for this hook,
// so that all changes to the page layout have been completed (e.g. collapsible elements),
// and we can measure things and display the highlight in the right place.
mw.hook( 'wikipage.content' ).remove( mw.dt.init );
mw.hook( 'wikipage.content' ).fire( $container );
// The hooks have "memory" so calling add() after fire() actually fires the handler,
// and calling add() before fire() would actually fire it twice.
mw.hook( 'wikipage.content' ).add( mw.dt.init );
}
/**
* Load the latest revision of the page and display its contents.
*
* @param {number} [oldId] Revision ID to fetch, latest if not specified
* @return {jQuery.Promise} Promise which resolves when the refresh is complete
*/
function refreshPageContents( oldId ) {
return getApi().get( {
action: 'parse',
// HACK: 'useskin' triggers a different code path that runs our OutputPageBeforeHTML hook,
// adding our reply links in the HTML (T266195)
useskin: mw.config.get( 'skin' ),
uselang: mw.config.get( 'wgUserLanguage' ),
// HACK: Always display reply links afterwards, ignoring preferences etc., in case this was
// a page view with reply links forced with ?dtenable=1 or otherwise
dtenable: '1',
prop: [ 'text', 'modules', 'jsconfigvars', 'revid' ],
page: !oldId ? mw.config.get( 'wgRelevantPageName' ) : undefined,
oldid: oldId || undefined
} ).then( function ( parseResp ) {
updatePageContents( $pageContainer, parseResp );
} );
}
/**
* Update the page after a comment is published/saved
*
* @param {Object} data Edit API response data
* @param {ThreadItem} threadItem Parent thread item
* @param {string} pageName Page title
* @param {mw.dt.ReplyWidget} replyWidget ReplyWidget
*/
function update( data, threadItem, pageName, replyWidget ) {
function logSaveSuccess() {
logger( {
action: 'saveSuccess',
timing: mw.now() - replyWidget.saveInitiated,
// eslint-disable-next-line camelcase
revision_id: data.newrevid
} );
}
// We posted a new comment, clear the cache, because wgCurRevisionId will not change if we posted
// to a transcluded page (T266275)
pageDataCache[ mw.config.get( 'wgRelevantPageName' ) ][ mw.config.get( 'wgCurRevisionId' ) ] = null;
var pageExists = !!mw.config.get( 'wgRelevantArticleId' );
if ( !pageExists ) {
// The page didn't exist before this update, so reload it. We'd handle
// setting up the content just fine (assuming there's a
// mw-parser-output), but fixing up the UI tabs/behavior is outside
// our scope.
replyWidget.unbindBeforeUnloadHandler();
replyWidget.clearStorage();
replyWidget.setPending( true );
window.location = mw.util.getUrl( pageName, { dtrepliedto: threadItem.id } );
logSaveSuccess();
return;
}
replyWidget.teardown();
linksController.teardown();
linksController = null;
// TODO: Tell controller to teardown all other open widgets
// Highlight the new reply after re-initializing
mw.dt.initState.repliedTo = threadItem.id;
// Update page state
var pageUpdated = $.Deferred();
if ( pageName === mw.config.get( 'wgRelevantPageName' ) ) {
// We can use the result from the VisualEditor API
updatePageContents( $pageContainer, {
parse: {
text: data.content,
jsconfigvars: data.jsconfigvars,
revid: data.newrevid,
// Note: VE API merges 'modules' and 'modulestyles'
modules: data.modules,
modulestyles: []
}
} );
mw.config.set( {
wgCurRevisionId: data.newrevid,
wgRevisionId: data.newrevid
} );
pageUpdated.resolve();
} else {
// We saved to another page, we must purge and then fetch the current page
var api = getApi();
api.post( {
action: 'purge',
titles: mw.config.get( 'wgRelevantPageName' )
} ).then( function () {
return refreshPageContents();
} ).then( function () {
pageUpdated.resolve();
} ).catch( function () {
// We saved the reply, but couldn't purge or fetch the updated page. Seems difficult to
// explain this problem. Redirect to the page where the user can at least see their reply…
window.location = mw.util.getUrl( pageName, { dtrepliedto: threadItem.id } );
// We're confident the saving portion succeeded, so still log this:
logSaveSuccess();
} );
}
// User logged in if module loaded.
if ( mw.loader.getState( 'mediawiki.page.watch.ajax' ) === 'ready' ) {
var watch = require( 'mediawiki.page.watch.ajax' );
watch.updateWatchLink(
mw.Title.newFromText( pageName ),
data.watched ? 'unwatch' : 'watch',
'idle',
data.watchlistexpiry
);
}
pageUpdated.then( logSaveSuccess );
}
module.exports = {
init: init,
update: update,
updatePageContents: updatePageContents,
refreshPageContents: refreshPageContents,
checkThreadItemOnPage: checkThreadItemOnPage,
getCheckboxesPromise: getCheckboxesPromise,
getApi: getApi,
storage: storage
};