cartodb/perfect-scrollbar
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reduced the risk of memory leaks

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This commit is contained in:
Fabian Vogelsteller 2013-08-05 16:59:17 +02:00 committed by Hyunje Alex Jun
parent b461fa895b
commit 74f97e330e
1 changed files with 45 additions and 13 deletions
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58
src/perfect-scrollbar.js
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@ -14,7 +14,9 @@
return this.each(function () { return this.each(function () {
// Use the default settings // Use the default settings
var settings = $.extend(true, {}, defaultSettings); var settings = $.extend(true, {}, defaultSettings),
$this = $(this);
if (typeof suppliedSettings === "object") { if (typeof suppliedSettings === "object") {
// But over-ride any supplied // But over-ride any supplied
$.extend(true, settings, suppliedSettings); $.extend(true, settings, suppliedSettings);
@ -23,26 +25,33 @@
option = suppliedSettings; option = suppliedSettings;
} }
// Catch options
if (option === 'update') { if (option === 'update') {
if ($(this).data('perfect-scrollbar-update')) { if ($this.data('perfect-scrollbar-update')) {
$(this).data('perfect-scrollbar-update')(); $this.data('perfect-scrollbar-update')();
} }
return $(this); return $this;
} }
else if (option === 'destroy') { else if (option === 'destroy') {
if ($(this).data('perfect-scrollbar-destroy')) { if ($this.data('perfect-scrollbar-destroy')) {
$(this).data('perfect-scrollbar-destroy')(); $this.data('perfect-scrollbar-destroy')();
} }
return $(this); return $this;
} }
if ($(this).data('perfect-scrollbar')) { if ($this.data('perfect-scrollbar')) {
// if there's already perfect-scrollbar // if there's already perfect-scrollbar
return $(this).data('perfect-scrollbar'); return $this.data('perfect-scrollbar');
} }
var $this = $(this).addClass('ps-container'),
$scrollbarX = $("<div class='ps-scrollbar-x'></div>").appendTo($this), // Or generate new perfectScrollbar
// Set class to the container
$this.addClass('ps-container');
var $scrollbarX = $("<div class='ps-scrollbar-x'></div>").appendTo($this),
$scrollbarY = $("<div class='ps-scrollbar-y'></div>").appendTo($this), $scrollbarY = $("<div class='ps-scrollbar-y'></div>").appendTo($this),
containerWidth, containerWidth,
containerHeight, containerHeight,
@ -84,6 +93,7 @@
containerHeight = $this.height(); containerHeight = $this.height();
contentWidth = $this.prop('scrollWidth'); contentWidth = $this.prop('scrollWidth');
contentHeight = $this.prop('scrollHeight'); contentHeight = $this.prop('scrollHeight');
if (containerWidth < contentWidth) { if (containerWidth < contentWidth) {
scrollbarXWidth = getSettingsAdjustedThumbSize(parseInt(containerWidth * containerWidth / contentWidth, 10)); scrollbarXWidth = getSettingsAdjustedThumbSize(parseInt(containerWidth * containerWidth / contentWidth, 10));
scrollbarXLeft = parseInt($this.scrollLeft() * (containerWidth - scrollbarXWidth) / (contentWidth - containerWidth), 10); scrollbarXLeft = parseInt($this.scrollLeft() * (containerWidth - scrollbarXWidth) / (contentWidth - containerWidth), 10);
@ -93,6 +103,7 @@
scrollbarXLeft = 0; scrollbarXLeft = 0;
$this.scrollLeft(0); $this.scrollLeft(0);
} }
if (containerHeight < contentHeight) { if (containerHeight < contentHeight) {
scrollbarYHeight = getSettingsAdjustedThumbSize(parseInt(containerHeight * containerHeight / contentHeight, 10)); scrollbarYHeight = getSettingsAdjustedThumbSize(parseInt(containerHeight * containerHeight / contentHeight, 10));
scrollbarYTop = parseInt($this.scrollTop() * (containerHeight - scrollbarYHeight) / (contentHeight - containerHeight), 10); scrollbarYTop = parseInt($this.scrollTop() * (containerHeight - scrollbarYHeight) / (contentHeight - containerHeight), 10);
@ -171,6 +182,9 @@
$scrollbarX.removeClass('in-scrolling'); $scrollbarX.removeClass('in-scrolling');
} }
}); });
currentLeft =
currentPageX = null;
}; };
var bindMouseScrollYHandler = function () { var bindMouseScrollYHandler = function () {
@ -199,6 +213,9 @@
$scrollbarY.removeClass('in-scrolling'); $scrollbarY.removeClass('in-scrolling');
} }
}); });
currentTop =
currentPageY = null;
}; };
// bind handlers // bind handlers
@ -299,6 +316,7 @@
} }
}); });
$this.bind("touchend.perfect-scroll", function (e) { $this.bind("touchend.perfect-scroll", function (e) {
clearInterval(breakingProcess);
breakingProcess = setInterval(function () { breakingProcess = setInterval(function () {
if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) { if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) {
clearInterval(breakingProcess); clearInterval(breakingProcess);
@ -314,13 +332,27 @@
}; };
var destroy = function () { var destroy = function () {
$scrollbarX.remove();
$scrollbarY.remove();
$this.unbind('.perfect-scroll'); $this.unbind('.perfect-scroll');
$(window).unbind('.perfect-scroll'); $(window).unbind('.perfect-scroll');
$this.data('perfect-scrollbar', null); $this.data('perfect-scrollbar', null);
$this.data('perfect-scrollbar-update', null); $this.data('perfect-scrollbar-update', null);
$this.data('perfect-scrollbar-destroy', null); $this.data('perfect-scrollbar-destroy', null);
$scrollbarX.remove();
$scrollbarY.remove();
// clean all variables
$scrollbarX =
$scrollbarY =
containerWidth =
containerHeight =
contentWidth =
contentHeight =
scrollbarXWidth =
scrollbarXLeft =
scrollbarXBottom =
scrollbarYHeight =
scrollbarYTop =
scrollbarYRight = null;
}; };
var ieSupport = function (version) { var ieSupport = function (version) {