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 ) );