2 * JavaScript to update page URL when a redirect is viewed, ensuring that the
3 * page is scrolled to the id when it's a redirect with fragment.
5 * This is loaded in the top queue, so avoid unnecessary dependencies
6 * like mediawiki.Title or mediawiki.Uri.
9 var profile
= $.client
.profile(),
10 canonical
= mw
.config
.get( 'wgInternalRedirectTargetUrl' ),
12 shouldChangeFragment
, index
;
14 // Clear internal mw.config entries, so that no one tries to depend on them
15 mw
.config
.set( 'wgInternalRedirectTargetUrl', null );
17 index
= canonical
.indexOf( '#' );
19 fragment
= canonical
.slice( index
);
22 // Never override the fragment if the user intended to look at a different section
23 shouldChangeFragment
= fragment
&& !location
.hash
;
25 // Replace the whole URL if possible, otherwise just change the fragment
26 if ( canonical
&& history
.replaceState
) {
27 if ( !shouldChangeFragment
) {
28 // If the current page view has a fragment already, don't override it
29 canonical
= canonical
.replace( /#.*$/, '' );
30 canonical
+= location
.hash
;
33 // This will also cause the browser to scroll to given fragment
34 history
.replaceState( /*data=*/ history
.state
, /*title=*/ document
.title
, /*url=*/ canonical
);
36 // …except for IE 10 and 11. Prod it with a location.hash change.
37 if ( shouldChangeFragment
&& profile
.name
=== 'msie' && profile
.versionNumber
>= 10 ) {
38 location
.hash
= fragment
;
41 } else if ( shouldChangeFragment
) {
42 if ( profile
.layout
=== 'webkit' && profile
.layoutVersion
< 420 ) {
43 // Released Safari w/ WebKit 418.9.1 messes up horribly
44 // Nightlies of 420+ are ok
48 location
.hash
= fragment
;
51 if ( shouldChangeFragment
&& profile
.layout
=== 'gecko' ) {
52 // Mozilla needs to wait until after load, otherwise the window doesn't
53 // scroll. See <https://bugzilla.mozilla.org/show_bug.cgi?id=516293>.
54 // There's no obvious way to detect this programmatically, so we use
55 // version-testing. If Firefox fixes the bug, they'll jump twice, but
56 // better twice than not at all, so make the fix hit future versions as
59 if ( location
.hash
=== fragment
) {
60 location
.hash
= fragment
;
65 }( mediaWiki
, jQuery
) );