resources/src/mediawiki.action/mediawiki.action.view.redirect.js

   1 /*!
   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.
   4  *
   5  * This is loaded in the top queue, so avoid unnecessary dependencies
   6  * like mediawiki.Title or mediawiki.Uri.
   7  */
   8 ( function ( mw, $ ) {
   9         var profile = $.client.profile(),
  10                 canonical = mw.config.get( 'wgInternalRedirectTargetUrl' ),
  11                 fragment = null,
  12                 shouldChangeFragment, index;
  13
  14         index = canonical.indexOf( '#' );
  15         if ( index !== -1 ) {
  16                 fragment = canonical.slice( index );
  17         }
  18
  19         // Never override the fragment if the user intended to look at a different section
  20         shouldChangeFragment = fragment && !location.hash;
  21
  22         // Replace the whole URL if possible, otherwise just change the fragment
  23         if ( canonical && history.replaceState ) {
  24                 if ( !shouldChangeFragment ) {
  25                         // If the current page view has a fragment already, don't override it
  26                         canonical = canonical.replace( /#.*$/, '' );
  27                         canonical += location.hash;
  28                 }
  29
  30                 // This will also cause the browser to scroll to given fragment
  31                 history.replaceState( /*data=*/ history.state, /*title=*/ document.title, /*url=*/ canonical );
  32
  33                 // …except for IE 10 and 11. Prod it with a location.hash change.
  34                 if ( shouldChangeFragment && profile.name === 'msie' && profile.versionNumber >= 10 ) {
  35                         location.hash = fragment;
  36                 }
  37
  38         } else if ( shouldChangeFragment ) {
  39                 if ( profile.layout === 'webkit' && profile.layoutVersion < 420 ) {
  40                         // Released Safari w/ WebKit 418.9.1 messes up horribly
  41                         // Nightlies of 420+ are ok
  42                         return;
  43                 }
  44
  45                 location.hash = fragment;
  46         }
  47
  48         if ( shouldChangeFragment && profile.layout === 'gecko' ) {
  49                 // Mozilla needs to wait until after load, otherwise the window doesn't
  50                 // scroll.  See <https://bugzilla.mozilla.org/show_bug.cgi?id=516293>.
  51                 // There's no obvious way to detect this programmatically, so we use
  52                 // version-testing.  If Firefox fixes the bug, they'll jump twice, but
  53                 // better twice than not at all, so make the fix hit future versions as
  54                 // well.
  55                 $( function () {
  56                         if ( location.hash === fragment ) {
  57                                 location.hash = fragment;
  58                         }
  59                 } );
  60         }
  61
  62 }( mediaWiki, jQuery ) );