| 1 |
/* |
| 2 |
* Based on tristen hoverintent plugin - https://github.com/tristen/hoverintent |
| 3 |
*/ |
| 4 |
|
| 5 |
(function( $ ) { |
| 6 |
'use strict'; |
| 7 |
|
| 8 |
var hoverIntent = function( el, onOver, onOut ) { |
| 9 |
var x, y, pX, pY, |
| 10 |
h = {}, |
| 11 |
state = 0, |
| 12 |
timer = 0; |
| 13 |
|
| 14 |
var options = { |
| 15 |
sensitivity: 7, |
| 16 |
interval: 100, |
| 17 |
timeout: 0 |
| 18 |
}; |
| 19 |
|
| 20 |
function delay( el, e ) { |
| 21 |
if ( timer ) |
| 22 |
timer = clearTimeout( timer ); |
| 23 |
|
| 24 |
state = 0; |
| 25 |
|
| 26 |
return onOut ? onOut.call( el, e ) : null; |
| 27 |
} |
| 28 |
|
| 29 |
function tracker( e ) { |
| 30 |
x = e.clientX; |
| 31 |
y = e.clientY; |
| 32 |
} |
| 33 |
|
| 34 |
function compare( el, e ) { |
| 35 |
if ( timer ) |
| 36 |
timer = clearTimeout( timer ); |
| 37 |
|
| 38 |
if ( (Math.abs( pX - x ) + Math.abs( pY - y )) < options.sensitivity ) { |
| 39 |
state = 1; |
| 40 |
|
| 41 |
return onOver ? onOver.call( el, e ) : null; |
| 42 |
} else { |
| 43 |
pX = x; |
| 44 |
pY = y; |
| 45 |
|
| 46 |
timer = setTimeout( function() { |
| 47 |
compare( el, e ); |
| 48 |
}, options.interval ); |
| 49 |
} |
| 50 |
} |
| 51 |
|
| 52 |
// Public methods |
| 53 |
h.options = function( opt ) { |
| 54 |
options = $.extend( {}, options, opt ); |
| 55 |
|
| 56 |
return h; |
| 57 |
}; |
| 58 |
|
| 59 |
function dispatchOver( e ) { |
| 60 |
if ( timer ) |
| 61 |
timer = clearTimeout( timer ); |
| 62 |
|
| 63 |
el.removeEventListener( 'mousemove', tracker ); |
| 64 |
|
| 65 |
if ( state !== 1 ) { |
| 66 |
pX = e.clientX; |
| 67 |
pY = e.clientY; |
| 68 |
|
| 69 |
el.addEventListener( 'mousemove', tracker ); |
| 70 |
|
| 71 |
timer = setTimeout( function() { |
| 72 |
compare( el, e ); |
| 73 |
}, options.interval ); |
| 74 |
} |
| 75 |
|
| 76 |
return this; |
| 77 |
} |
| 78 |
|
| 79 |
function dispatchOut( e ) { |
| 80 |
if ( timer ) |
| 81 |
timer = clearTimeout( timer ); |
| 82 |
|
| 83 |
el.removeEventListener( 'mousemove', tracker ); |
| 84 |
|
| 85 |
if ( state === 1 ) { |
| 86 |
timer = setTimeout( function() { |
| 87 |
delay( el, e ); |
| 88 |
}, options.timeout ); |
| 89 |
} |
| 90 |
|
| 91 |
return this; |
| 92 |
} |
| 93 |
|
| 94 |
h.remove = function() { |
| 95 |
el.removeEventListener( 'mouseover', dispatchOver ); |
| 96 |
el.removeEventListener( 'mouseleave', dispatchOut ); |
| 97 |
}; |
| 98 |
|
| 99 |
el.addEventListener( 'mouseover', dispatchOver ); |
| 100 |
|
| 101 |
el.addEventListener( 'mouseleave', dispatchOut ); |
| 102 |
|
| 103 |
return h; |
| 104 |
}; |
| 105 |
|
| 106 |
$.fn.hoverIntent = function( over, out, options ) { |
| 107 |
return this.each( function() { |
| 108 |
hoverIntent( this, over, out ).options( options || {} ); |
| 109 |
} ); |
| 110 |
}; |
| 111 |
|
| 112 |
})( jQuery ); |
