WordPress 3.4

[autoinstalls/wordpress.git] / wp-includes / js / admin-bar.dev.js

diff --git a/wp-includes/js/admin-bar.dev.js b/wp-includes/js/admin-bar.dev.js
index 57f4a854b1857cbd34d3083117740478aaa8d0f0..0479c56cd41e5d460a9c5827280bca7e2c2cb443 100644 (file)
--- a/wp-includes/js/admin-bar.dev.js
+++ b/wp-includes/js/admin-bar.dev.js
@@ -59,6 +59,14 @@ if ( typeof(jQuery) != 'undefined' ) {
                        target.siblings('.ab-sub-wrapper').find('.ab-item').each(refresh);
                });
 
+               $('#wpadminbar').click( function(e) {
+                       if ( e.target.id != 'wpadminbar' && e.target.id != 'wp-admin-bar-top-secondary' )
+                               return;
+
+                       e.preventDefault();
+                       $('html, body').animate({ scrollTop: 0 }, 'fast');
+               });
+
        });
 } else {
        (function(d, w) {
@@ -178,6 +186,40 @@ if ( typeof(jQuery) != 'undefined' ) {
                                }
                        }
                        return false;
+               },
+
+               scrollToTop = function(t) {
+                       var distance, speed, step, steps, timer, speed_step;
+
+                       // Ensure that the #wpadminbar was the target of the click.
+                       if ( t.id != 'wpadminbar' && t.id != 'wp-admin-bar-top-secondary' )
+                               return;
+
+                       distance    = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0;
+
+                       if ( distance < 1 )
+                               return;
+
+                       speed_step = distance > 800 ? 130 : 100;
+                       speed     = Math.min( 12, Math.round( distance / speed_step ) );
+                       step      = distance > 800 ? Math.round( distance / 30  ) : Math.round( distance / 20  );
+                       steps     = [];
+                       timer     = 0;
+
+                       // Animate scrolling to the top of the page by generating steps to
+                       // the top of the page and shifting to each step at a set interval.
+                       while ( distance ) {
+                               distance -= step;
+                               if ( distance < 0 )
+                                       distance = 0;
+                               steps.push( distance );
+
+                               setTimeout( function() {
+                                       window.scrollTo( 0, steps.shift() );
+                               }, timer * speed );
+
+                               timer++;
+                       }
                };
 
                addEvent(w, 'load', function() {
@@ -198,6 +240,10 @@ if ( typeof(jQuery) != 'undefined' ) {
                                });
 
                                addEvent(aB, 'click', clickShortlink );
+
+                               addEvent(aB, 'click', function(e) {
+                                       scrollToTop( e.target || e.srcElement );
+                               });
                        }
 
                        if ( w.location.hash )
@@ -206,4 +252,3 @@ if ( typeof(jQuery) != 'undefined' ) {
        })(document, window);
 
 }
-