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Added support for keybd events #192

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Added support for keybd events #192

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60 changes: 57 additions & 3 deletions jquery.slimscroll.js
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Original file line number Diff line number Diff line change
Expand Up @@ -76,7 +76,13 @@
borderRadius: '7px',

// sets border radius of the rail
railBorderRadius : '7px'
railBorderRadius : '7px',

//default tab index
tabIndex: 0,

//Page scroll threshold
pageScrollThreshold: 10
};

var o = $.extend(defaults, options);
Expand Down Expand Up @@ -156,6 +162,9 @@
// wrap content
var wrapper = $(divS)
.addClass(o.wrapperClass)
.attr({
tabindex: o.tabIndex
})
.css({
position: 'relative',
overflow: 'hidden',
Expand Down Expand Up @@ -308,6 +317,51 @@
if (!o.alwaysVisible) { bar.hide(); }
}

//attach keyboard events
attachKeybd();
function _onKeyPress(e)
{
if (!isOverPanel) { return; }
e = e || window.event;
var delta = 1;
var target = e.target || e.srcTarget || e.srcElement;
if ($(target).closest('.' + o.wrapperClass).is(me.parent())) {
var key = e.key || e.keyIdentifier || e.keyCode;
switch (key) {
case 33://pageup
scrollContent(-delta, true, true, true);
break;
case 34://pagedown
scrollContent(delta, true, true, true);
break;
case 38://alert('up');
scrollContent(-delta, true);
break;
case 40://alert('down');
scrollContent(delta, true);
break;
default: return;
}
}
// stop window scroll
if (e.preventDefault && !releaseScroll) { e.preventDefault(); }
if (!releaseScroll) { e.returnValue = false; }
}
function attachKeybd()
{
var parent = me.closest('.'+o.wrapperClass);
parent
.bind('keydown', _onKeyPress)
.bind('focusin', function () {
isOverPanel = true;
showBar();
hideBar();
})
.bind('focusout', function () {
isOverPanel = false;
hideBar();
});
}
// attach scroll events
attachWheel();

Expand All @@ -333,7 +387,7 @@
if (!releaseScroll) { e.returnValue = false; }
}

function scrollContent(y, isWheel, isJump)
function scrollContent(y, isWheel, isJump, isPageJump)
{
releaseScroll = false;
var delta = y;
Expand Down Expand Up @@ -363,7 +417,7 @@

if (isJump)
{
delta = y;
delta = (isPageJump)? me.scrollTop() + (y * me.outerHeight()) - o.pageScrollThreshold : y;
var offsetTop = delta / me[0].scrollHeight * me.outerHeight();
offsetTop = Math.min(Math.max(offsetTop, 0), maxTop);
bar.css({ top: offsetTop + 'px' });
Expand Down