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/**
* Animate watch/unwatch links to use asynchronous API requests to
* watch pages, rather than navigating to a different URI.
*
* Usage:
*
* var watch = require( 'mediawiki.page.watch.ajax' );
* watch.updateWatchLink(
* $node,
* 'watch',
* 'loading'
* );
*
* @class mw.plugin.page.watch.ajax
* @singleton
*/
( function ( mw, $ ) {
var watch,
// The name of the page to watch or unwatch
title = mw.config.get( 'wgRelevantPageName' );
/**
* Update the link text, link href attribute and (if applicable)
* "loading" class.
*
* @param {jQuery} $link Anchor tag of (un)watch link
* @param {string} action One of 'watch', 'unwatch'
* @param {string} [state="idle"] 'idle' or 'loading'. Default is 'idle'
*/
function updateWatchLink( $link, action, state ) {
var msgKey, $li, otherAction;
// A valid but empty jQuery object shouldn't throw a TypeError
if ( !$link.length ) {
return;
}
// Invalid actions shouldn't silently turn the page in an unrecoverable state
if ( action !== 'watch' && action !== 'unwatch' ) {
throw new Error( 'Invalid action' );
}
// message keys 'watch', 'watching', 'unwatch' or 'unwatching'.
msgKey = state === 'loading' ? action + 'ing' : action;
otherAction = action === 'watch' ? 'unwatch' : 'watch';
$li = $link.closest( 'li' );
// Trigger a 'watchpage' event for this List item.
// Announce the otherAction value as the first param.
// Used to monitor the state of watch link.
// TODO: Revise when system wide hooks are implemented
if ( state === undefined ) {
$li.trigger( 'watchpage.mw', otherAction );
}
$link
.text( mw.msg( msgKey ) )
.attr( 'title', mw.msg( 'tooltip-ca-' + action ) )
.updateTooltipAccessKeys()
.attr( 'href', mw.util.getUrl( title, { action: action } ) );
// Most common ID style
if ( $li.prop( 'id' ) === 'ca-' + otherAction ) {
$li.prop( 'id', 'ca-' + action );
}
if ( state === 'loading' ) {
$link.addClass( 'loading' );
} else {
$link.removeClass( 'loading' );
}
}
/**
* TODO: This should be moved somewhere more accessible.
*
* @private
* @param {string} url
* @return {string} The extracted action, defaults to 'view'
*/
function mwUriGetAction( url ) {
var action, actionPaths, key, m, parts;
// TODO: Does MediaWiki give action path or query param
// precedence? If the former, move this to the bottom
action = mw.util.getParamValue( 'action', url );
if ( action !== null ) {
return action;
}
actionPaths = mw.config.get( 'wgActionPaths' );
for ( key in actionPaths ) {
if ( actionPaths.hasOwnProperty( key ) ) {
parts = actionPaths[ key ].split( '$1' );
parts = parts.map( mw.RegExp.escape );
m = new RegExp( parts.join( '(.+)' ) ).exec( url );
if ( m && m[ 1 ] ) {
return key;
}
}
}
return 'view';
}
// Expose public methods
watch = {
updateWatchLink: updateWatchLink
};
module.exports = watch;
$( function () {
var $links = $( '.mw-watchlink a[data-mw="interface"], a.mw-watchlink[data-mw="interface"]' );
if ( !$links.length ) {
// Fallback to the class-based exclusion method for backwards-compatibility
$links = $( '.mw-watchlink a, a.mw-watchlink' );
// Restrict to core interfaces, ignore user-generated content
$links = $links.filter( ':not( #bodyContent *, #content * )' );
}
$links.click( function ( e ) {
var mwTitle, action, api, $link;
mwTitle = mw.Title.newFromText( title );
action = mwUriGetAction( this.href );
if ( !mwTitle || ( action !== 'watch' && action !== 'unwatch' ) ) {
// Let native browsing handle the link
return true;
}
e.preventDefault();
e.stopPropagation();
$link = $( this );
if ( $link.hasClass( 'loading' ) ) {
return;
}
updateWatchLink( $link, action, 'loading' );
// Preload the notification module for mw.notify
mw.loader.load( 'mediawiki.notification' );
api = new mw.Api();
api[ action ]( title )
.done( function ( watchResponse ) {
var message, otherAction = action === 'watch' ? 'unwatch' : 'watch';
if ( mwTitle.getNamespaceId() > 0 && mwTitle.getNamespaceId() % 2 === 1 ) {
message = action === 'watch' ? 'addedwatchtext-talk' : 'removedwatchtext-talk';
} else {
message = action === 'watch' ? 'addedwatchtext' : 'removedwatchtext';
}
mw.notify( mw.message( message, mwTitle.getPrefixedText() ).parseDom(), {
tag: 'watch-self'
} );
// Set link to opposite
updateWatchLink( $link, otherAction );
// Update the "Watch this page" checkbox on action=edit when the
// page is watched or unwatched via the tab (T14395).
$( '#wpWatchthis' ).prop( 'checked', watchResponse.watched === true );
} )
.fail( function () {
var msg, link;
// Reset link to non-loading mode
updateWatchLink( $link, action );
// Format error message
link = mw.html.element(
'a', {
href: mw.util.getUrl( title ),
title: mwTitle.getPrefixedText()
}, mwTitle.getPrefixedText()
);
msg = mw.message( 'watcherrortext', link );
// Report to user about the error
mw.notify( msg, {
tag: 'watch-self',
type: 'error'
} );
} );
} );
} );
}( mediaWiki, jQuery ) );
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