X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/resources/src/mediawiki.action/mediawiki.action.view.redirect.js

diff --git a/resources/src/mediawiki.action/mediawiki.action.view.redirect.js b/resources/src/mediawiki.action/mediawiki.action.view.redirect.js
new file mode 100644
index 00000000..39a122d9
--- /dev/null
+++ b/resources/src/mediawiki.action/mediawiki.action.view.redirect.js
@@ -0,0 +1,65 @@
+/*!
+ * JavaScript to update page URL when a redirect is viewed, ensuring that the
+ * page is scrolled to the id when it's a redirect with fragment.
+ *
+ * This is loaded in the top queue, so avoid unnecessary dependencies
+ * like mediawiki.Title or mediawiki.Uri.
+ */
+( function ( mw, $ ) {
+	var profile = $.client.profile(),
+		canonical = mw.config.get( 'wgInternalRedirectTargetUrl' ),
+		fragment = null,
+		node, shouldChangeFragment, index;
+
+	index = canonical.indexOf( '#' );
+	if ( index !== -1 ) {
+		fragment = canonical.slice( index );
+	}
+
+	// Never override the fragment if the user intended to look at a different section
+	shouldChangeFragment = fragment && !location.hash;
+
+	// Replace the whole URL if possible, otherwise just change the fragment
+	if ( canonical && history.replaceState ) {
+		if ( !shouldChangeFragment ) {
+			// If the current page view has a fragment already, don't override it
+			canonical = canonical.replace( /#.*$/, '' );
+			canonical += location.hash;
+		}
+
+		// Note that this will update the hash in a modern browser, retaining back behaviour
+		history.replaceState( /* data= */ history.state, /* title= */ document.title, /* url= */ canonical );
+		if ( shouldChangeFragment ) {
+			// Specification for history.replaceState() doesn't require browser to scroll,
+			// so scroll to be sure (see also T110501). Support for IE9 and IE10.
+			node = document.getElementById( fragment.slice( 1 ) );
+			if ( node ) {
+				node.scrollIntoView();
+			}
+		}
+
+	} else if ( shouldChangeFragment ) {
+		if ( profile.layout === 'webkit' && profile.layoutVersion < 420 ) {
+			// Released Safari w/ WebKit 418.9.1 messes up horribly
+			// Nightlies of 420+ are ok
+			return;
+		}
+
+		location.hash = fragment;
+	}
+
+	if ( shouldChangeFragment && profile.layout === 'gecko' ) {
+		// Mozilla needs to wait until after load, otherwise the window doesn't
+		// scroll.  See <https://bugzilla.mozilla.org/show_bug.cgi?id=516293>.
+		// There's no obvious way to detect this programmatically, so we use
+		// version-testing.  If Firefox fixes the bug, they'll jump twice, but
+		// better twice than not at all, so make the fix hit future versions as
+		// well.
+		$( function () {
+			if ( location.hash === fragment ) {
+				location.hash = fragment;
+			}
+		} );
+	}
+
+}( mediaWiki, jQuery ) );