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/*
* jQuery UI Effects Bounce @VERSION
*
* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
* http://docs.jquery.com/UI/Effects/Bounce
*
* Depends:
* jquery.effects.core.js
*/
(function( $, undefined ) {
var rshowhide = /show|hide/;
$.effects.effect.bounce = function(o) {
return this.queue(function() {
// Create element
var el = $( this ),
props = [ 'position', 'top', 'bottom', 'left', 'right' ],
// defaults:
mode = $.effects.setMode( el, o.mode || 'effect' ),
showhide = rshowhide.test( mode ),
direction = o.direction || 'up',
distance = o.distance || 20,
times = o.times || 5,
// number of internal animations
anims = times * 2 + showhide,
speed = (o.duration || 250) / anims,
easing = o.easing,
// utility:
ref = ( direction == 'up' || direction == 'down' ) ? 'top' : 'left',
motion = ( direction == 'up' || direction == 'left' ), // true is positive
i,
upAnim,
downAnim,
// we will need to re-assemble the queue to stack our animations in place
queue = el.queue(),
queuelen = queue.length;
// Avoid touching opacity to prevent clearType and PNG issues in IE
if ( showhide ) {
props.push( 'opacity' );
}
$.effects.save( el, props );
el.show();
$.effects.createWrapper( el ); // Create Wrapper
// default distance for the BIGGEST bounce is the outer Distance / 3
if ( !distance ) {
distance = el[ ref == 'top' ? 'outerHeight' : 'outerWidth' ]({ margin:true }) / 3;
}
if ( mode == 'show' ) {
upAnim = { opacity: 1 };
upAnim[ ref ] = 0;
// fade and set the initial position if we are showing
el.css( 'opacity', 0 )
.css( ref, motion ? -distance*2 : distance*2 )
.animate( upAnim, speed, easing );
}
// start at the smallest distance if we are hiding
if ( mode == 'hide' ) {
distance = distance / ( ( times - 1 ) * 2 );
}
// Bounces up then down (or reversed if motion) -- times * 2 animations happen here
for ( i = 0; i < times; i++ ) {
upAnim = {};
downAnim = {};
upAnim[ ref ] = ( motion ? '-=' : '+=' ) + distance;
downAnim[ ref ] = ( motion ? '+=' : '-=' ) + distance;
el.animate( upAnim, speed, easing )
.animate( downAnim, speed, easing,
( i == times - 1 ) && ( mode != "hide" ) ? finish : undefined );
distance = mode == 'hide' ? distance * 2 : distance / 2;
}
// Last Bounce
if ( mode == 'hide' ) {
upAnim = { opacity: 0 };
upAnim[ ref ] = ( motion ? '-=' : '+=' ) + distance;
el.animate( upAnim, speed, easing, function(){
el.hide();
finish();
});
}
// inject all the animations we just queued to be first in line (after "inprogress")
if ( queuelen > 1) {
queue.splice.apply( queue,
[ 1, 0 ].concat( queue.splice( queuelen, anims ) ) );
}
el.dequeue();
function finish() {
$.effects.restore( el, props );
$.effects.removeWrapper( el );
$.isFunction( o.complete ) && o.complete.apply( el[ 0 ], arguments );
}
});
};
})(jQuery);
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