More code refactoring.
It's never enough.
This commit is contained in:
Hyunje Alex Jun
parent
337c0be9e2
commit
f7d90464e0
@ -14,10 +14,9 @@
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// Browser globals
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factory(jQuery);
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}
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}(function ($) {
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})(function ($) {
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'use strict';
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// helper functions
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function int(x) {
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if (typeof x === 'string') {
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return parseInt(x, 10);
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@ -26,7 +25,6 @@
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}
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}
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// The default settings for the plugin
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var defaultSettings = {
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wheelSpeed: 1,
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wheelPropagation: false,
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@ -53,12 +51,11 @@
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$.fn.perfectScrollbar = function (suppliedSettings, option) {
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return this.each(function () {
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// Use the default settings
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var settings = $.extend(true, {}, defaultSettings);
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var $this = $(this);
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if (typeof suppliedSettings === "object") {
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// But override any supplied
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// Override default settings with any supplied
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$.extend(true, settings, suppliedSettings);
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} else {
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// If no setting was supplied, then the first param must be the option
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@ -89,68 +86,67 @@
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$this.addClass('ps-container');
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var $scrollbarXRail = $("<div class='ps-scrollbar-x-rail'>").appendTo($this);
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var $scrollbarYRail = $("<div class='ps-scrollbar-y-rail'>").appendTo($this);
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var $scrollbarX = $("<div class='ps-scrollbar-x'>").appendTo($scrollbarXRail);
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var $scrollbarY = $("<div class='ps-scrollbar-y'>").appendTo($scrollbarYRail);
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var scrollbarXActive;
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var scrollbarYActive;
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var containerWidth;
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var containerHeight;
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var contentWidth;
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var contentHeight;
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var isRtl = $this.css('direction') === "rtl";
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var eventClassName = getEventClassName();
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var $scrollbarXRail = $("<div class='ps-scrollbar-x-rail'>").appendTo($this);
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var $scrollbarX = $("<div class='ps-scrollbar-x'>").appendTo($scrollbarXRail);
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var scrollbarXActive;
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var scrollbarXWidth;
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var scrollbarXLeft;
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var scrollbarXBottom = int($scrollbarXRail.css('bottom'));
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var isScrollbarXUsingBottom = scrollbarXBottom === scrollbarXBottom; // !isNaN
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var scrollbarXTop = isScrollbarXUsingBottom ? null : int($scrollbarXRail.css('top'));
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var railBorderXWidth = int($scrollbarXRail.css('borderLeftWidth')) + int($scrollbarXRail.css('borderRightWidth'));
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var $scrollbarYRail = $("<div class='ps-scrollbar-y-rail'>").appendTo($this);
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var $scrollbarY = $("<div class='ps-scrollbar-y'>").appendTo($scrollbarYRail);
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var scrollbarYActive;
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var scrollbarYHeight;
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var scrollbarYTop;
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var scrollbarYRight = int($scrollbarYRail.css('right'));
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var isScrollbarYUsingRight = scrollbarYRight === scrollbarYRight; // !isNaN
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var scrollbarYLeft = isScrollbarYUsingRight ? null : int($scrollbarYRail.css('left'));
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var isRtl = $this.css('direction') === "rtl";
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var eventClassName = getEventClassName();
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var railBorderXWidth = int($scrollbarXRail.css('borderLeftWidth')) + int($scrollbarXRail.css('borderRightWidth'));
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var railBorderYWidth = int($scrollbarXRail.css('borderTopWidth')) + int($scrollbarXRail.css('borderBottomWidth'));
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var updateContentScrollTop = function (currentTop, deltaY) {
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function updateScrollTop(currentTop, deltaY) {
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var newTop = currentTop + deltaY;
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var maxTop = containerHeight - scrollbarYHeight;
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if (newTop < 0) {
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scrollbarYTop = 0;
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}
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else if (newTop > maxTop) {
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} else if (newTop > maxTop) {
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scrollbarYTop = maxTop;
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}
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else {
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} else {
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scrollbarYTop = newTop;
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}
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var scrollTop = int(scrollbarYTop * (contentHeight - containerHeight) / (containerHeight - scrollbarYHeight));
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$this.scrollTop(scrollTop);
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};
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}
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var updateContentScrollLeft = function (currentLeft, deltaX) {
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function updateScrollLeft(currentLeft, deltaX) {
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var newLeft = currentLeft + deltaX;
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var maxLeft = containerWidth - scrollbarXWidth;
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if (newLeft < 0) {
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scrollbarXLeft = 0;
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}
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else if (newLeft > maxLeft) {
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} else if (newLeft > maxLeft) {
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scrollbarXLeft = maxLeft;
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}
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else {
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} else {
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scrollbarXLeft = newLeft;
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}
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var scrollLeft = int(scrollbarXLeft * (contentWidth - containerWidth) / (containerWidth - scrollbarXWidth));
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$this.scrollLeft(scrollLeft);
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};
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}
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var getSettingsAdjustedThumbSize = function (thumbSize) {
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function getThumbSize(thumbSize) {
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if (settings.minScrollbarLength) {
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thumbSize = Math.max(thumbSize, settings.minScrollbarLength);
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}
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@ -158,41 +154,83 @@
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thumbSize = Math.min(thumbSize, settings.maxScrollbarLength);
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}
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return thumbSize;
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};
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}
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var updateScrollbarCss = function () {
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var scrollbarXStyles = { width: containerWidth, display: scrollbarXActive ? "inherit" : "none" };
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function updateCss() {
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var xRailOffset = {width: containerWidth, display: scrollbarXActive ? "inherit" : "none"};
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if (isRtl) {
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scrollbarXStyles.left = $this.scrollLeft() + containerWidth - contentWidth;
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xRailOffset.left = $this.scrollLeft() + containerWidth - contentWidth;
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} else {
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scrollbarXStyles.left = $this.scrollLeft();
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xRailOffset.left = $this.scrollLeft();
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}
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if (isScrollbarXUsingBottom) {
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scrollbarXStyles.bottom = scrollbarXBottom - $this.scrollTop();
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xRailOffset.bottom = scrollbarXBottom - $this.scrollTop();
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} else {
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scrollbarXStyles.top = scrollbarXTop + $this.scrollTop();
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xRailOffset.top = scrollbarXTop + $this.scrollTop();
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}
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$scrollbarXRail.css(scrollbarXStyles);
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$scrollbarXRail.css(xRailOffset);
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var scrollbarYStyles = { top: $this.scrollTop(), height: containerHeight, display: scrollbarYActive ? "inherit" : "none" };
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var railYOffset = {top: $this.scrollTop(), height: containerHeight, display: scrollbarYActive ? "inherit" : "none"};
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if (isScrollbarYUsingRight) {
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if (isRtl) {
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scrollbarYStyles.right = contentWidth - $this.scrollLeft() - scrollbarYRight - $scrollbarY.outerWidth();
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railYOffset.right = contentWidth - $this.scrollLeft() - scrollbarYRight - $scrollbarY.outerWidth();
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} else {
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scrollbarYStyles.right = scrollbarYRight - $this.scrollLeft();
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railYOffset.right = scrollbarYRight - $this.scrollLeft();
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}
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} else {
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if (isRtl) {
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scrollbarYStyles.left = $this.scrollLeft() + containerWidth * 2 - contentWidth - scrollbarYLeft - $scrollbarY.outerWidth();
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railYOffset.left = $this.scrollLeft() + containerWidth * 2 - contentWidth - scrollbarYLeft - $scrollbarY.outerWidth();
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} else {
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scrollbarYStyles.left = scrollbarYLeft + $this.scrollLeft();
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railYOffset.left = scrollbarYLeft + $this.scrollLeft();
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}
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}
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$scrollbarYRail.css(scrollbarYStyles);
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$scrollbarYRail.css(railYOffset);
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$scrollbarX.css({left: scrollbarXLeft, width: scrollbarXWidth - railBorderXWidth});
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$scrollbarY.css({top: scrollbarYTop, height: scrollbarYHeight - railBorderYWidth});
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}
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function updateGeometry() {
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// Hide scrollbars not to affect scrollWidth and scrollHeight
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$scrollbarXRail.hide();
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$scrollbarYRail.hide();
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containerWidth = settings.includePadding ? $this.innerWidth() : $this.width();
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containerHeight = settings.includePadding ? $this.innerHeight() : $this.height();
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contentWidth = $this.prop('scrollWidth');
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contentHeight = $this.prop('scrollHeight');
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if (!settings.suppressScrollX && containerWidth + settings.scrollXMarginOffset < contentWidth) {
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scrollbarXActive = true;
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scrollbarXWidth = getThumbSize(int(containerWidth * containerWidth / contentWidth));
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scrollbarXLeft = int($this.scrollLeft() * (containerWidth - scrollbarXWidth) / (contentWidth - containerWidth));
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} else {
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scrollbarXActive = false;
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scrollbarXWidth = 0;
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scrollbarXLeft = 0;
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$this.scrollLeft(0);
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}
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if (!settings.suppressScrollY && containerHeight + settings.scrollYMarginOffset < contentHeight) {
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scrollbarYActive = true;
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scrollbarYHeight = getThumbSize(int(containerHeight * containerHeight / contentHeight));
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scrollbarYTop = int($this.scrollTop() * (containerHeight - scrollbarYHeight) / (contentHeight - containerHeight));
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} else {
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scrollbarYActive = false;
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scrollbarYHeight = 0;
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scrollbarYTop = 0;
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$this.scrollTop(0);
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}
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if (scrollbarXLeft >= containerWidth - scrollbarXWidth) {
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scrollbarXLeft = containerWidth - scrollbarXWidth;
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}
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if (scrollbarYTop >= containerHeight - scrollbarYHeight) {
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scrollbarYTop = containerHeight - scrollbarYHeight;
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}
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updateCss();
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if (scrollbarXActive) {
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$this.addClass('ps-active-x');
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@ -205,50 +243,6 @@
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} else {
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$this.removeClass('ps-active-y');
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}
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};
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var updateBarSizeAndPosition = function () {
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// Hide scrollbars not to affect scrollWidth and scrollHeight
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$scrollbarXRail.hide();
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$scrollbarYRail.hide();
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containerWidth = settings.includePadding ? $this.innerWidth() : $this.width();
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containerHeight = settings.includePadding ? $this.innerHeight() : $this.height();
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contentWidth = $this.prop('scrollWidth');
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contentHeight = $this.prop('scrollHeight');
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if (!settings.suppressScrollX && containerWidth + settings.scrollXMarginOffset < contentWidth) {
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scrollbarXActive = true;
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scrollbarXWidth = getSettingsAdjustedThumbSize(int(containerWidth * containerWidth / contentWidth));
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scrollbarXLeft = int($this.scrollLeft() * (containerWidth - scrollbarXWidth) / (contentWidth - containerWidth));
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}
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else {
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scrollbarXActive = false;
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scrollbarXWidth = 0;
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scrollbarXLeft = 0;
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$this.scrollLeft(0);
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}
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if (!settings.suppressScrollY && containerHeight + settings.scrollYMarginOffset < contentHeight) {
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scrollbarYActive = true;
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scrollbarYHeight = getSettingsAdjustedThumbSize(int(containerHeight * containerHeight / contentHeight));
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scrollbarYTop = int($this.scrollTop() * (containerHeight - scrollbarYHeight) / (contentHeight - containerHeight));
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}
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else {
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scrollbarYActive = false;
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scrollbarYHeight = 0;
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scrollbarYTop = 0;
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$this.scrollTop(0);
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}
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if (scrollbarYTop >= containerHeight - scrollbarYHeight) {
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scrollbarYTop = containerHeight - scrollbarYHeight;
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}
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if (scrollbarXLeft >= containerWidth - scrollbarXWidth) {
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scrollbarXLeft = containerWidth - scrollbarXWidth;
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}
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updateScrollbarCss();
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// Show scrollbars if needed after updated
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if (!settings.suppressScrollX) {
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@ -257,9 +251,9 @@
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if (!settings.suppressScrollY) {
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$scrollbarYRail.show();
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}
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};
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}
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var bindMouseScrollXHandler = function () {
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function bindMouseScrollXHandler() {
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var currentLeft;
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var currentPageX;
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@ -273,8 +267,8 @@
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$(document).bind('mousemove' + eventClassName, function (e) {
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if ($scrollbarXRail.hasClass('in-scrolling')) {
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updateContentScrollLeft(currentLeft, e.pageX - currentPageX);
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updateBarSizeAndPosition();
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updateScrollLeft(currentLeft, e.pageX - currentPageX);
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updateGeometry();
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e.stopPropagation();
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e.preventDefault();
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}
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@ -288,9 +282,9 @@
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currentLeft =
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currentPageX = null;
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};
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}
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var bindMouseScrollYHandler = function () {
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function bindMouseScrollYHandler() {
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var currentTop;
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var currentPageY;
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@ -304,8 +298,8 @@
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$(document).bind('mousemove' + eventClassName, function (e) {
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if ($scrollbarYRail.hasClass('in-scrolling')) {
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updateContentScrollTop(currentTop, e.pageY - currentPageY);
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updateBarSizeAndPosition();
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updateScrollTop(currentTop, e.pageY - currentPageY);
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updateGeometry();
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e.stopPropagation();
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e.preventDefault();
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}
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@ -319,10 +313,10 @@
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currentTop =
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currentPageY = null;
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};
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}
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// check if the default scrolling should be prevented.
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var shouldPreventDefault = function (deltaX, deltaY) {
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function shouldPreventDefault(deltaX, deltaY) {
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var scrollTop = $this.scrollTop();
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if (deltaX === 0) {
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if (!scrollbarYActive) {
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@ -343,13 +337,12 @@
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}
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}
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return true;
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};
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}
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// bind handlers
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var bindMouseWheelHandler = function () {
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function bindMouseWheelHandler() {
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var shouldPrevent = false;
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var getDeltaFromEvent = function (e) {
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function getDeltaFromEvent(e) {
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var deltaX = e.originalEvent.deltaX;
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var deltaY = -1 * e.originalEvent.deltaY;
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@ -372,9 +365,9 @@
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}
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return [deltaX, deltaY];
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};
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}
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var mousewheelHandler = function (e) {
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function mousewheelHandler(e) {
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var delta = getDeltaFromEvent(e);
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var deltaX = delta[0];
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@ -406,24 +399,23 @@
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shouldPrevent = true;
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}
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// update bar position
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updateBarSizeAndPosition();
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updateGeometry();
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shouldPrevent = (shouldPrevent || shouldPreventDefault(deltaX, deltaY));
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if (shouldPrevent) {
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e.stopPropagation();
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e.preventDefault();
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}
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};
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}
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if (typeof window.onwheel !== "undefined") {
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$this.bind('wheel' + eventClassName, mousewheelHandler);
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} else if (typeof window.onmousewheel !== "undefined") {
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$this.bind('mousewheel' + eventClassName, mousewheelHandler);
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}
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};
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}
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var bindKeyboardHandler = function () {
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function bindKeyboardHandler() {
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var hovered = false;
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$this.bind('mouseenter' + eventClassName, function (e) {
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hovered = true;
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@ -483,10 +475,10 @@
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e.preventDefault();
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}
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});
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};
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}
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var bindRailClickHandler = function () {
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var stopPropagation = function (e) { e.stopPropagation(); };
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function bindRailClickHandler() {
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function stopPropagation(e) { e.stopPropagation(); }
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$scrollbarY.bind('click' + eventClassName, stopPropagation);
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$scrollbarYRail.bind('click' + eventClassName, function (e) {
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@ -519,19 +511,17 @@
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$this.scrollLeft((contentWidth - containerWidth) * positionRatio);
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});
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};
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}
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// bind mobile touch handler
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var bindMobileTouchHandler = function () {
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var applyTouchMove = function (differenceX, differenceY) {
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function bindMobileTouchHandler() {
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function applyTouchMove(differenceX, differenceY) {
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$this.scrollTop($this.scrollTop() - differenceY);
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$this.scrollLeft($this.scrollLeft() - differenceX);
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// update bar position
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updateBarSizeAndPosition();
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};
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updateGeometry();
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}
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var startCoords = {};
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var startOffset = {};
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var startTime = 0;
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var speed = {};
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var breakingProcess = null;
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@ -547,8 +537,8 @@
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$this.bind("touchstart" + eventClassName, function (e) {
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var touch = e.originalEvent.targetTouches[0];
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startCoords.pageX = touch.pageX;
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startCoords.pageY = touch.pageY;
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startOffset.pageX = touch.pageX;
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startOffset.pageY = touch.pageY;
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startTime = (new Date()).getTime();
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@ -562,15 +552,13 @@
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if (!inGlobalTouch && e.originalEvent.targetTouches.length === 1) {
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var touch = e.originalEvent.targetTouches[0];
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var currentCoords = {};
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currentCoords.pageX = touch.pageX;
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currentCoords.pageY = touch.pageY;
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var currentOffset = {pageX: touch.pageX, pageY: touch.pageY};
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var differenceX = currentCoords.pageX - startCoords.pageX;
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var differenceY = currentCoords.pageY - startCoords.pageY;
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var differenceX = currentOffset.pageX - startOffset.pageX;
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var differenceY = currentOffset.pageY - startOffset.pageY;
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applyTouchMove(differenceX, differenceY);
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startCoords = currentCoords;
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startOffset = currentOffset;
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var currentTime = (new Date()).getTime();
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@ -598,15 +586,15 @@
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speed.y *= 0.8;
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}, 10);
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});
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};
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}
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var bindScrollHandler = function () {
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function bindScrollHandler() {
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$this.bind('scroll' + eventClassName, function (e) {
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updateBarSizeAndPosition();
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updateGeometry();
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});
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};
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}
|
||||
|
||||
var destroy = function () {
|
||||
function destroy() {
|
||||
$this.unbind(eventClassName);
|
||||
$(window).unbind(eventClassName);
|
||||
$(document).unbind(eventClassName);
|
||||
@ -641,27 +629,27 @@
|
||||
scrollbarYLeft =
|
||||
isRtl =
|
||||
eventClassName = null;
|
||||
};
|
||||
}
|
||||
|
||||
var ieSupport = function (version) {
|
||||
function ieSupport(version) {
|
||||
$this.addClass('ie').addClass('ie' + version);
|
||||
|
||||
var bindHoverHandlers = function () {
|
||||
var mouseenter = function () {
|
||||
$(this).addClass('hover');
|
||||
};
|
||||
var mouseleave = function () {
|
||||
$(this).removeClass('hover');
|
||||
};
|
||||
function bindHoverHandlers() {
|
||||
function mouseenter() {
|
||||
$this.addClass('hover');
|
||||
}
|
||||
function mouseleave() {
|
||||
$this.removeClass('hover');
|
||||
}
|
||||
$this.bind('mouseenter' + eventClassName, mouseenter).bind('mouseleave' + eventClassName, mouseleave);
|
||||
$scrollbarXRail.bind('mouseenter' + eventClassName, mouseenter).bind('mouseleave' + eventClassName, mouseleave);
|
||||
$scrollbarYRail.bind('mouseenter' + eventClassName, mouseenter).bind('mouseleave' + eventClassName, mouseleave);
|
||||
$scrollbarX.bind('mouseenter' + eventClassName, mouseenter).bind('mouseleave' + eventClassName, mouseleave);
|
||||
$scrollbarY.bind('mouseenter' + eventClassName, mouseenter).bind('mouseleave' + eventClassName, mouseleave);
|
||||
};
|
||||
}
|
||||
|
||||
var fixIe6ScrollbarPosition = function () {
|
||||
updateScrollbarCss = function () {
|
||||
function fixIe6ScrollbarPosition() {
|
||||
updateCss = function () {
|
||||
var scrollbarXStyles = { left: scrollbarXLeft + $this.scrollLeft(), width: scrollbarXWidth };
|
||||
if (isScrollbarXUsingBottom) {
|
||||
scrollbarXStyles.bottom = scrollbarXBottom;
|
||||
@ -681,24 +669,24 @@
|
||||
$scrollbarX.hide().show();
|
||||
$scrollbarY.hide().show();
|
||||
};
|
||||
};
|
||||
}
|
||||
|
||||
if (version === 6) {
|
||||
bindHoverHandlers();
|
||||
fixIe6ScrollbarPosition();
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
var supportsTouch = (('ontouchstart' in window) || window.DocumentTouch && document instanceof window.DocumentTouch);
|
||||
|
||||
var initialize = function () {
|
||||
function initialize() {
|
||||
var ieMatch = navigator.userAgent.toLowerCase().match(/(msie) ([\w.]+)/);
|
||||
if (ieMatch && ieMatch[1] === 'msie') {
|
||||
// must be executed at first, because 'ieSupport' may addClass to the container
|
||||
ieSupport(int(ieMatch[2]));
|
||||
}
|
||||
|
||||
updateBarSizeAndPosition();
|
||||
updateGeometry();
|
||||
bindScrollHandler();
|
||||
bindMouseScrollXHandler();
|
||||
bindMouseScrollYHandler();
|
||||
@ -712,14 +700,13 @@
|
||||
bindKeyboardHandler();
|
||||
}
|
||||
$this.data('perfect-scrollbar', $this);
|
||||
$this.data('perfect-scrollbar-update', updateBarSizeAndPosition);
|
||||
$this.data('perfect-scrollbar-update', updateGeometry);
|
||||
$this.data('perfect-scrollbar-destroy', destroy);
|
||||
};
|
||||
}
|
||||
|
||||
// initialize
|
||||
initialize();
|
||||
|
||||
return $this;
|
||||
});
|
||||
};
|
||||
}));
|
||||
});
|
||||
|
||||
Loading…
Reference in New Issue
Block a user