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Click empty toolbar to scroll to top, props ericmann, fixes #18758

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git-svn-id: https://develop.svn.wordpress.org/trunk@19846 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Ozz 2012-02-06 23:17:28 +00:00
parent bd5c1f88e9
commit 5c2650abc8
1 changed files with 46 additions and 0 deletions
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46
wp-includes/js/admin-bar.dev.js
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@ -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 )