875 lines
29 KiB
JavaScript
875 lines
29 KiB
JavaScript
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/* Copyright (c) 2015 Hyunje Alex Jun and other contributors
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* Licensed under the MIT License
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*/
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(function (factory) {
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'use strict';
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define(['jquery'], factory);
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} else if (typeof exports === 'object') {
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// Node/CommonJS
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factory(require('jquery'));
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} else {
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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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'use strict';
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function getInt(x) {
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if (typeof x === 'string') {
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return parseInt(x, 10);
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} else {
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return ~~x;
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}
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}
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var defaultSettings = {
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wheelSpeed: 1,
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wheelPropagation: false,
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swipePropagation: true,
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minScrollbarLength: null,
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maxScrollbarLength: null,
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useBothWheelAxes: false,
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useKeyboard: true,
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suppressScrollX: false,
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suppressScrollY: false,
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scrollXMarginOffset: 0,
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scrollYMarginOffset: 0,
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includePadding: false
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};
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var incrementingId = 0;
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var eventClassFactory = function () {
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var id = incrementingId++;
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return function (eventName) {
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var className = '.perfect-scrollbar-' + id;
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if (typeof eventName === 'undefined') {
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return className;
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} else {
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return eventName + className;
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}
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};
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};
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var isWebkit = 'WebkitAppearance' in document.documentElement.style;
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$.fn.perfectScrollbar = function (suppliedSettings, option) {
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return this.each(function () {
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var settings = $.extend(true, {}, defaultSettings);
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var $this = $(this);
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var isPluginAlive = function () { return !!$this; };
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if (typeof suppliedSettings === "object") {
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// Override default settings with any supplied
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$.extend(true, settings, suppliedSettings);
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} else {
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// If no setting was supplied, then the first param must be the option
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option = suppliedSettings;
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}
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// Catch options
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if (option === 'update') {
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if ($this.data('perfect-scrollbar-update')) {
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$this.data('perfect-scrollbar-update')();
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}
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return $this;
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}
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else if (option === 'destroy') {
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if ($this.data('perfect-scrollbar-destroy')) {
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$this.data('perfect-scrollbar-destroy')();
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}
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return $this;
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}
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if ($this.data('perfect-scrollbar')) {
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// if there's already perfect-scrollbar
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return $this.data('perfect-scrollbar');
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}
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// Or generate new perfectScrollbar
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$this.addClass('ps-container');
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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 eventClass = eventClassFactory();
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var ownerDocument = this.ownerDocument || document;
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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 = getInt($scrollbarXRail.css('bottom'));
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var isScrollbarXUsingBottom = scrollbarXBottom === scrollbarXBottom; // !isNaN
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var scrollbarXTop = isScrollbarXUsingBottom ? null : getInt($scrollbarXRail.css('top'));
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var railBorderXWidth = getInt($scrollbarXRail.css('borderLeftWidth')) + getInt($scrollbarXRail.css('borderRightWidth'));
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var railXMarginWidth = getInt($scrollbarXRail.css('marginLeft')) + getInt($scrollbarXRail.css('marginRight'));
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var railXWidth;
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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 = getInt($scrollbarYRail.css('right'));
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var isScrollbarYUsingRight = scrollbarYRight === scrollbarYRight; // !isNaN
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var scrollbarYLeft = isScrollbarYUsingRight ? null : getInt($scrollbarYRail.css('left'));
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var railBorderYWidth = getInt($scrollbarYRail.css('borderTopWidth')) + getInt($scrollbarYRail.css('borderBottomWidth'));
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var railYMarginHeight = getInt($scrollbarYRail.css('marginTop')) + getInt($scrollbarYRail.css('marginBottom'));
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var railYHeight;
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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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} else if (newTop > maxTop) {
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scrollbarYTop = maxTop;
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} else {
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scrollbarYTop = newTop;
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}
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var scrollTop = getInt(scrollbarYTop * (contentHeight - containerHeight) / (containerHeight - scrollbarYHeight));
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$this.scrollTop(scrollTop);
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}
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function updateScrollLeft(currentLeft, deltaX) {
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var newLeft = currentLeft + deltaX;
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var maxLeft = containerWidth - scrollbarXWidth;
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if (newLeft < 0) {
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scrollbarXLeft = 0;
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} else if (newLeft > maxLeft) {
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scrollbarXLeft = maxLeft;
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} else {
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scrollbarXLeft = newLeft;
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}
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var scrollLeft = getInt(scrollbarXLeft * (contentWidth - containerWidth) / (containerWidth - scrollbarXWidth));
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$this.scrollLeft(scrollLeft);
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}
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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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if (settings.maxScrollbarLength) {
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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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function updateCss() {
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var xRailOffset = {width: railXWidth};
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if (isRtl) {
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xRailOffset.left = $this.scrollLeft() + containerWidth - contentWidth;
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} else {
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xRailOffset.left = $this.scrollLeft();
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}
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if (isScrollbarXUsingBottom) {
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xRailOffset.bottom = scrollbarXBottom - $this.scrollTop();
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} else {
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xRailOffset.top = scrollbarXTop + $this.scrollTop();
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}
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$scrollbarXRail.css(xRailOffset);
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var railYOffset = {top: $this.scrollTop(), height: railYHeight};
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if (isScrollbarYUsingRight) {
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if (isRtl) {
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railYOffset.right = contentWidth - $this.scrollLeft() - scrollbarYRight - $scrollbarY.outerWidth();
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} else {
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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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railYOffset.left = $this.scrollLeft() + containerWidth * 2 - contentWidth - scrollbarYLeft - $scrollbarY.outerWidth();
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} else {
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railYOffset.left = scrollbarYLeft + $this.scrollLeft();
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}
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}
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$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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$this.removeClass('ps-active-x');
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$this.removeClass('ps-active-y');
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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 = $this.prop('scrollHeight');
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if (!settings.suppressScrollX && containerWidth + settings.scrollXMarginOffset < contentWidth) {
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scrollbarXActive = true;
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railXWidth = containerWidth - railXMarginWidth;
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scrollbarXWidth = getThumbSize(getInt(railXWidth * containerWidth / contentWidth));
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scrollbarXLeft = getInt($this.scrollLeft() * (railXWidth - 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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$this.scrollLeft(0);
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}
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if (!settings.suppressScrollY && containerHeight + settings.scrollYMarginOffset < contentHeight) {
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scrollbarYActive = true;
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railYHeight = containerHeight - railYMarginHeight;
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scrollbarYHeight = getThumbSize(getInt(railYHeight * containerHeight / contentHeight));
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scrollbarYTop = getInt($this.scrollTop() * (railYHeight - 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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$this.scrollTop(0);
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}
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if (scrollbarXLeft >= railXWidth - scrollbarXWidth) {
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scrollbarXLeft = railXWidth - scrollbarXWidth;
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}
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if (scrollbarYTop >= railYHeight - scrollbarYHeight) {
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scrollbarYTop = railYHeight - scrollbarYHeight;
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}
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updateCss();
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if (scrollbarXActive) {
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$this.addClass('ps-active-x');
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}
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if (scrollbarYActive) {
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$this.addClass('ps-active-y');
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}
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}
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function bindMouseScrollXHandler() {
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var currentLeft;
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var currentPageX;
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var mouseMoveHandler = function (e) {
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updateScrollLeft(currentLeft, e.pageX - currentPageX);
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updateGeometry();
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e.stopPropagation();
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e.preventDefault();
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};
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var mouseUpHandler = function (e) {
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$this.removeClass('ps-in-scrolling');
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$(ownerDocument).unbind(eventClass('mousemove'), mouseMoveHandler);
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};
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$scrollbarX.bind(eventClass('mousedown'), function (e) {
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currentPageX = e.pageX;
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currentLeft = $scrollbarX.position().left;
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$this.addClass('ps-in-scrolling');
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$(ownerDocument).bind(eventClass('mousemove'), mouseMoveHandler);
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$(ownerDocument).one(eventClass('mouseup'), mouseUpHandler);
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e.stopPropagation();
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e.preventDefault();
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});
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currentLeft =
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currentPageX = null;
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}
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function bindMouseScrollYHandler() {
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var currentTop;
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var currentPageY;
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var mouseMoveHandler = function (e) {
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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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var mouseUpHandler = function (e) {
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$this.removeClass('ps-in-scrolling');
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$(ownerDocument).unbind(eventClass('mousemove'), mouseMoveHandler);
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};
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$scrollbarY.bind(eventClass('mousedown'), function (e) {
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currentPageY = e.pageY;
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currentTop = $scrollbarY.position().top;
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$this.addClass('ps-in-scrolling');
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$(ownerDocument).bind(eventClass('mousemove'), mouseMoveHandler);
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$(ownerDocument).one(eventClass('mouseup'), mouseUpHandler);
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e.stopPropagation();
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e.preventDefault();
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});
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currentTop =
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currentPageY = null;
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}
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function shouldPreventWheel(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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return false;
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}
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if ((scrollTop === 0 && deltaY > 0) || (scrollTop >= contentHeight - containerHeight && deltaY < 0)) {
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return !settings.wheelPropagation;
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}
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}
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var scrollLeft = $this.scrollLeft();
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if (deltaY === 0) {
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if (!scrollbarXActive) {
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return false;
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}
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if ((scrollLeft === 0 && deltaX < 0) || (scrollLeft >= contentWidth - containerWidth && deltaX > 0)) {
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return !settings.wheelPropagation;
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}
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}
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return true;
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}
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function shouldPreventSwipe(deltaX, deltaY) {
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var scrollTop = $this.scrollTop();
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var scrollLeft = $this.scrollLeft();
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var magnitudeX = Math.abs(deltaX);
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var magnitudeY = Math.abs(deltaY);
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if (magnitudeY > magnitudeX) {
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// user is perhaps trying to swipe up/down the page
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if (((deltaY < 0) && (scrollTop === contentHeight - containerHeight)) ||
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((deltaY > 0) && (scrollTop === 0))) {
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return !settings.swipePropagation;
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}
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} else if (magnitudeX > magnitudeY) {
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// user is perhaps trying to swipe left/right across the page
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if (((deltaX < 0) && (scrollLeft === contentWidth - containerWidth)) ||
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((deltaX > 0) && (scrollLeft === 0))) {
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return !settings.swipePropagation;
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}
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}
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return true;
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}
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function bindMouseWheelHandler() {
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var shouldPrevent = false;
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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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if (typeof deltaX === "undefined" || typeof deltaY === "undefined") {
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// OS X Safari
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||
|
|
deltaX = -1 * e.originalEvent.wheelDeltaX / 6;
|
||
|
|
deltaY = e.originalEvent.wheelDeltaY / 6;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (e.originalEvent.deltaMode && e.originalEvent.deltaMode === 1) {
|
||
|
|
// Firefox in deltaMode 1: Line scrolling
|
||
|
|
deltaX *= 10;
|
||
|
|
deltaY *= 10;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (deltaX !== deltaX && deltaY !== deltaY/* NaN checks */) {
|
||
|
|
// IE in some mouse drivers
|
||
|
|
deltaX = 0;
|
||
|
|
deltaY = e.originalEvent.wheelDelta;
|
||
|
|
}
|
||
|
|
|
||
|
|
return [deltaX, deltaY];
|
||
|
|
}
|
||
|
|
|
||
|
|
function mousewheelHandler(e) {
|
||
|
|
// FIXME: this is a quick fix for the select problem in FF and IE.
|
||
|
|
// If there comes an effective way to deal with the problem,
|
||
|
|
// this lines should be removed.
|
||
|
|
if (!isWebkit && $this.find('select:focus').length > 0) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var delta = getDeltaFromEvent(e);
|
||
|
|
|
||
|
|
var deltaX = delta[0];
|
||
|
|
var deltaY = delta[1];
|
||
|
|
|
||
|
|
shouldPrevent = false;
|
||
|
|
if (!settings.useBothWheelAxes) {
|
||
|
|
// deltaX will only be used for horizontal scrolling and deltaY will
|
||
|
|
// only be used for vertical scrolling - this is the default
|
||
|
|
$this.scrollTop($this.scrollTop() - (deltaY * settings.wheelSpeed));
|
||
|
|
$this.scrollLeft($this.scrollLeft() + (deltaX * settings.wheelSpeed));
|
||
|
|
} else if (scrollbarYActive && !scrollbarXActive) {
|
||
|
|
// only vertical scrollbar is active and useBothWheelAxes option is
|
||
|
|
// active, so let's scroll vertical bar using both mouse wheel axes
|
||
|
|
if (deltaY) {
|
||
|
|
$this.scrollTop($this.scrollTop() - (deltaY * settings.wheelSpeed));
|
||
|
|
} else {
|
||
|
|
$this.scrollTop($this.scrollTop() + (deltaX * settings.wheelSpeed));
|
||
|
|
}
|
||
|
|
shouldPrevent = true;
|
||
|
|
} else if (scrollbarXActive && !scrollbarYActive) {
|
||
|
|
// useBothWheelAxes and only horizontal bar is active, so use both
|
||
|
|
// wheel axes for horizontal bar
|
||
|
|
if (deltaX) {
|
||
|
|
$this.scrollLeft($this.scrollLeft() + (deltaX * settings.wheelSpeed));
|
||
|
|
} else {
|
||
|
|
$this.scrollLeft($this.scrollLeft() - (deltaY * settings.wheelSpeed));
|
||
|
|
}
|
||
|
|
shouldPrevent = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
updateGeometry();
|
||
|
|
|
||
|
|
shouldPrevent = (shouldPrevent || shouldPreventWheel(deltaX, deltaY));
|
||
|
|
if (shouldPrevent) {
|
||
|
|
e.stopPropagation();
|
||
|
|
e.preventDefault();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof window.onwheel !== "undefined") {
|
||
|
|
$this.bind(eventClass('wheel'), mousewheelHandler);
|
||
|
|
} else if (typeof window.onmousewheel !== "undefined") {
|
||
|
|
$this.bind(eventClass('mousewheel'), mousewheelHandler);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function bindKeyboardHandler() {
|
||
|
|
var hovered = false;
|
||
|
|
$this.bind(eventClass('mouseenter'), function (e) {
|
||
|
|
hovered = true;
|
||
|
|
});
|
||
|
|
$this.bind(eventClass('mouseleave'), function (e) {
|
||
|
|
hovered = false;
|
||
|
|
});
|
||
|
|
|
||
|
|
var shouldPrevent = false;
|
||
|
|
$(ownerDocument).bind(eventClass('keydown'), function (e) {
|
||
|
|
if (e.isDefaultPrevented && e.isDefaultPrevented()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!hovered) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var activeElement = document.activeElement ? document.activeElement : ownerDocument.activeElement;
|
||
|
|
// go deeper if element is a webcomponent
|
||
|
|
while (activeElement.shadowRoot) {
|
||
|
|
activeElement = activeElement.shadowRoot.activeElement;
|
||
|
|
}
|
||
|
|
if ($(activeElement).is(":input,[contenteditable]")) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var deltaX = 0;
|
||
|
|
var deltaY = 0;
|
||
|
|
|
||
|
|
switch (e.which) {
|
||
|
|
case 37: // left
|
||
|
|
deltaX = -30;
|
||
|
|
break;
|
||
|
|
case 38: // up
|
||
|
|
deltaY = 30;
|
||
|
|
break;
|
||
|
|
case 39: // right
|
||
|
|
deltaX = 30;
|
||
|
|
break;
|
||
|
|
case 40: // down
|
||
|
|
deltaY = -30;
|
||
|
|
break;
|
||
|
|
case 33: // page up
|
||
|
|
deltaY = 90;
|
||
|
|
break;
|
||
|
|
case 32: // space bar
|
||
|
|
case 34: // page down
|
||
|
|
deltaY = -90;
|
||
|
|
break;
|
||
|
|
case 35: // end
|
||
|
|
if (e.ctrlKey) {
|
||
|
|
deltaY = -contentHeight;
|
||
|
|
} else {
|
||
|
|
deltaY = -containerHeight;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 36: // home
|
||
|
|
if (e.ctrlKey) {
|
||
|
|
deltaY = $this.scrollTop();
|
||
|
|
} else {
|
||
|
|
deltaY = containerHeight;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this.scrollTop($this.scrollTop() - deltaY);
|
||
|
|
$this.scrollLeft($this.scrollLeft() + deltaX);
|
||
|
|
|
||
|
|
shouldPrevent = shouldPreventWheel(deltaX, deltaY);
|
||
|
|
if (shouldPrevent) {
|
||
|
|
e.preventDefault();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function bindRailClickHandler() {
|
||
|
|
function stopPropagation(e) { e.stopPropagation(); }
|
||
|
|
|
||
|
|
$scrollbarY.bind(eventClass('click'), stopPropagation);
|
||
|
|
$scrollbarYRail.bind(eventClass('click'), function (e) {
|
||
|
|
var halfOfScrollbarLength = getInt(scrollbarYHeight / 2);
|
||
|
|
var positionTop = e.pageY - $scrollbarYRail.offset().top - halfOfScrollbarLength;
|
||
|
|
var maxPositionTop = containerHeight - scrollbarYHeight;
|
||
|
|
var positionRatio = positionTop / maxPositionTop;
|
||
|
|
|
||
|
|
if (positionRatio < 0) {
|
||
|
|
positionRatio = 0;
|
||
|
|
} else if (positionRatio > 1) {
|
||
|
|
positionRatio = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this.scrollTop((contentHeight - containerHeight) * positionRatio);
|
||
|
|
});
|
||
|
|
|
||
|
|
$scrollbarX.bind(eventClass('click'), stopPropagation);
|
||
|
|
$scrollbarXRail.bind(eventClass('click'), function (e) {
|
||
|
|
var halfOfScrollbarLength = getInt(scrollbarXWidth / 2);
|
||
|
|
var positionLeft = e.pageX - $scrollbarXRail.offset().left - halfOfScrollbarLength;
|
||
|
|
var maxPositionLeft = containerWidth - scrollbarXWidth;
|
||
|
|
var positionRatio = positionLeft / maxPositionLeft;
|
||
|
|
|
||
|
|
if (positionRatio < 0) {
|
||
|
|
positionRatio = 0;
|
||
|
|
} else if (positionRatio > 1) {
|
||
|
|
positionRatio = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this.scrollLeft((contentWidth - containerWidth) * positionRatio);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function bindSelectionHandler() {
|
||
|
|
function getRangeNode() {
|
||
|
|
var selection = window.getSelection ? window.getSelection() :
|
||
|
|
document.getSlection ? document.getSlection() : {rangeCount: 0};
|
||
|
|
if (selection.rangeCount === 0) {
|
||
|
|
return null;
|
||
|
|
} else {
|
||
|
|
return selection.getRangeAt(0).commonAncestorContainer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var scrollingLoop = null;
|
||
|
|
var scrollDiff = {top: 0, left: 0};
|
||
|
|
function startScrolling() {
|
||
|
|
if (!scrollingLoop) {
|
||
|
|
scrollingLoop = setInterval(function () {
|
||
|
|
if (!isPluginAlive()) {
|
||
|
|
clearInterval(scrollingLoop);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this.scrollTop($this.scrollTop() + scrollDiff.top);
|
||
|
|
$this.scrollLeft($this.scrollLeft() + scrollDiff.left);
|
||
|
|
updateGeometry();
|
||
|
|
}, 50); // every .1 sec
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function stopScrolling() {
|
||
|
|
if (scrollingLoop) {
|
||
|
|
clearInterval(scrollingLoop);
|
||
|
|
scrollingLoop = null;
|
||
|
|
}
|
||
|
|
$this.removeClass('ps-in-scrolling');
|
||
|
|
$this.removeClass('ps-in-scrolling');
|
||
|
|
}
|
||
|
|
|
||
|
|
var isSelected = false;
|
||
|
|
$(ownerDocument).bind(eventClass('selectionchange'), function (e) {
|
||
|
|
if ($.contains($this[0], getRangeNode())) {
|
||
|
|
isSelected = true;
|
||
|
|
} else {
|
||
|
|
isSelected = false;
|
||
|
|
stopScrolling();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
$(window).bind(eventClass('mouseup'), function (e) {
|
||
|
|
if (isSelected) {
|
||
|
|
isSelected = false;
|
||
|
|
stopScrolling();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
$(window).bind(eventClass('mousemove'), function (e) {
|
||
|
|
if (isSelected) {
|
||
|
|
var mousePosition = {x: e.pageX, y: e.pageY};
|
||
|
|
var containerOffset = $this.offset();
|
||
|
|
var containerGeometry = {
|
||
|
|
left: containerOffset.left,
|
||
|
|
right: containerOffset.left + $this.outerWidth(),
|
||
|
|
top: containerOffset.top,
|
||
|
|
bottom: containerOffset.top + $this.outerHeight()
|
||
|
|
};
|
||
|
|
|
||
|
|
if (mousePosition.x < containerGeometry.left + 3) {
|
||
|
|
scrollDiff.left = -5;
|
||
|
|
$this.addClass('ps-in-scrolling');
|
||
|
|
} else if (mousePosition.x > containerGeometry.right - 3) {
|
||
|
|
scrollDiff.left = 5;
|
||
|
|
$this.addClass('ps-in-scrolling');
|
||
|
|
} else {
|
||
|
|
scrollDiff.left = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mousePosition.y < containerGeometry.top + 3) {
|
||
|
|
if (containerGeometry.top + 3 - mousePosition.y < 5) {
|
||
|
|
scrollDiff.top = -5;
|
||
|
|
} else {
|
||
|
|
scrollDiff.top = -20;
|
||
|
|
}
|
||
|
|
$this.addClass('ps-in-scrolling');
|
||
|
|
} else if (mousePosition.y > containerGeometry.bottom - 3) {
|
||
|
|
if (mousePosition.y - containerGeometry.bottom + 3 < 5) {
|
||
|
|
scrollDiff.top = 5;
|
||
|
|
} else {
|
||
|
|
scrollDiff.top = 20;
|
||
|
|
}
|
||
|
|
$this.addClass('ps-in-scrolling');
|
||
|
|
} else {
|
||
|
|
scrollDiff.top = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (scrollDiff.top === 0 && scrollDiff.left === 0) {
|
||
|
|
stopScrolling();
|
||
|
|
} else {
|
||
|
|
startScrolling();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function bindTouchHandler(supportsTouch, supportsIePointer) {
|
||
|
|
function applyTouchMove(differenceX, differenceY) {
|
||
|
|
$this.scrollTop($this.scrollTop() - differenceY);
|
||
|
|
$this.scrollLeft($this.scrollLeft() - differenceX);
|
||
|
|
|
||
|
|
updateGeometry();
|
||
|
|
}
|
||
|
|
|
||
|
|
var startOffset = {};
|
||
|
|
var startTime = 0;
|
||
|
|
var speed = {};
|
||
|
|
var easingLoop = null;
|
||
|
|
var inGlobalTouch = false;
|
||
|
|
var inLocalTouch = false;
|
||
|
|
|
||
|
|
function globalTouchStart(e) {
|
||
|
|
inGlobalTouch = true;
|
||
|
|
}
|
||
|
|
function globalTouchEnd(e) {
|
||
|
|
inGlobalTouch = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function getTouch(e) {
|
||
|
|
if (e.originalEvent.targetTouches) {
|
||
|
|
return e.originalEvent.targetTouches[0];
|
||
|
|
} else {
|
||
|
|
// Maybe IE pointer
|
||
|
|
return e.originalEvent;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function shouldHandle(e) {
|
||
|
|
var event = e.originalEvent;
|
||
|
|
if (event.targetTouches && event.targetTouches.length === 1) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (event.pointerType && event.pointerType !== 'mouse' && event.pointerType !== event.MSPOINTER_TYPE_MOUSE) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
function touchStart(e) {
|
||
|
|
if (shouldHandle(e)) {
|
||
|
|
inLocalTouch = true;
|
||
|
|
|
||
|
|
var touch = getTouch(e);
|
||
|
|
|
||
|
|
startOffset.pageX = touch.pageX;
|
||
|
|
startOffset.pageY = touch.pageY;
|
||
|
|
|
||
|
|
startTime = (new Date()).getTime();
|
||
|
|
|
||
|
|
if (easingLoop !== null) {
|
||
|
|
clearInterval(easingLoop);
|
||
|
|
}
|
||
|
|
|
||
|
|
e.stopPropagation();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function touchMove(e) {
|
||
|
|
if (!inGlobalTouch && inLocalTouch && shouldHandle(e)) {
|
||
|
|
var touch = getTouch(e);
|
||
|
|
|
||
|
|
var currentOffset = {pageX: touch.pageX, pageY: touch.pageY};
|
||
|
|
|
||
|
|
var differenceX = currentOffset.pageX - startOffset.pageX;
|
||
|
|
var differenceY = currentOffset.pageY - startOffset.pageY;
|
||
|
|
|
||
|
|
applyTouchMove(differenceX, differenceY);
|
||
|
|
startOffset = currentOffset;
|
||
|
|
|
||
|
|
var currentTime = (new Date()).getTime();
|
||
|
|
|
||
|
|
var timeGap = currentTime - startTime;
|
||
|
|
if (timeGap > 0) {
|
||
|
|
speed.x = differenceX / timeGap;
|
||
|
|
speed.y = differenceY / timeGap;
|
||
|
|
startTime = currentTime;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (shouldPreventSwipe(differenceX, differenceY)) {
|
||
|
|
e.stopPropagation();
|
||
|
|
e.preventDefault();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function touchEnd(e) {
|
||
|
|
if (!inGlobalTouch && inLocalTouch) {
|
||
|
|
inLocalTouch = false;
|
||
|
|
|
||
|
|
clearInterval(easingLoop);
|
||
|
|
easingLoop = setInterval(function () {
|
||
|
|
if (!isPluginAlive()) {
|
||
|
|
clearInterval(easingLoop);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) {
|
||
|
|
clearInterval(easingLoop);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
applyTouchMove(speed.x * 30, speed.y * 30);
|
||
|
|
|
||
|
|
speed.x *= 0.8;
|
||
|
|
speed.y *= 0.8;
|
||
|
|
}, 10);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (supportsTouch) {
|
||
|
|
$(window).bind(eventClass("touchstart"), globalTouchStart);
|
||
|
|
$(window).bind(eventClass("touchend"), globalTouchEnd);
|
||
|
|
$this.bind(eventClass("touchstart"), touchStart);
|
||
|
|
$this.bind(eventClass("touchmove"), touchMove);
|
||
|
|
$this.bind(eventClass("touchend"), touchEnd);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (supportsIePointer) {
|
||
|
|
if (window.PointerEvent) {
|
||
|
|
$(window).bind(eventClass("pointerdown"), globalTouchStart);
|
||
|
|
$(window).bind(eventClass("pointerup"), globalTouchEnd);
|
||
|
|
$this.bind(eventClass("pointerdown"), touchStart);
|
||
|
|
$this.bind(eventClass("pointermove"), touchMove);
|
||
|
|
$this.bind(eventClass("pointerup"), touchEnd);
|
||
|
|
} else if (window.MSPointerEvent) {
|
||
|
|
$(window).bind(eventClass("MSPointerDown"), globalTouchStart);
|
||
|
|
$(window).bind(eventClass("MSPointerUp"), globalTouchEnd);
|
||
|
|
$this.bind(eventClass("MSPointerDown"), touchStart);
|
||
|
|
$this.bind(eventClass("MSPointerMove"), touchMove);
|
||
|
|
$this.bind(eventClass("MSPointerUp"), touchEnd);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function bindScrollHandler() {
|
||
|
|
$this.bind(eventClass('scroll'), function (e) {
|
||
|
|
updateGeometry();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function destroy() {
|
||
|
|
$this.unbind(eventClass());
|
||
|
|
$(window).unbind(eventClass());
|
||
|
|
$(ownerDocument).unbind(eventClass());
|
||
|
|
$this.data('perfect-scrollbar', null);
|
||
|
|
$this.data('perfect-scrollbar-update', null);
|
||
|
|
$this.data('perfect-scrollbar-destroy', null);
|
||
|
|
$scrollbarX.remove();
|
||
|
|
$scrollbarY.remove();
|
||
|
|
$scrollbarXRail.remove();
|
||
|
|
$scrollbarYRail.remove();
|
||
|
|
|
||
|
|
// clean all variables
|
||
|
|
$this =
|
||
|
|
$scrollbarXRail =
|
||
|
|
$scrollbarYRail =
|
||
|
|
$scrollbarX =
|
||
|
|
$scrollbarY =
|
||
|
|
scrollbarXActive =
|
||
|
|
scrollbarYActive =
|
||
|
|
containerWidth =
|
||
|
|
containerHeight =
|
||
|
|
contentWidth =
|
||
|
|
contentHeight =
|
||
|
|
scrollbarXWidth =
|
||
|
|
scrollbarXLeft =
|
||
|
|
scrollbarXBottom =
|
||
|
|
isScrollbarXUsingBottom =
|
||
|
|
scrollbarXTop =
|
||
|
|
scrollbarYHeight =
|
||
|
|
scrollbarYTop =
|
||
|
|
scrollbarYRight =
|
||
|
|
isScrollbarYUsingRight =
|
||
|
|
scrollbarYLeft =
|
||
|
|
isRtl =
|
||
|
|
eventClass = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
var supportsTouch = (('ontouchstart' in window) || window.DocumentTouch && document instanceof window.DocumentTouch);
|
||
|
|
var supportsIePointer = window.navigator.msMaxTouchPoints !== null;
|
||
|
|
|
||
|
|
function initialize() {
|
||
|
|
updateGeometry();
|
||
|
|
bindScrollHandler();
|
||
|
|
bindMouseScrollXHandler();
|
||
|
|
bindMouseScrollYHandler();
|
||
|
|
bindRailClickHandler();
|
||
|
|
bindSelectionHandler();
|
||
|
|
bindMouseWheelHandler();
|
||
|
|
|
||
|
|
if (supportsTouch || supportsIePointer) {
|
||
|
|
bindTouchHandler(supportsTouch, supportsIePointer);
|
||
|
|
}
|
||
|
|
if (settings.useKeyboard) {
|
||
|
|
bindKeyboardHandler();
|
||
|
|
}
|
||
|
|
$this.data('perfect-scrollbar', $this);
|
||
|
|
$this.data('perfect-scrollbar-update', updateGeometry);
|
||
|
|
$this.data('perfect-scrollbar-destroy', destroy);
|
||
|
|
}
|
||
|
|
|
||
|
|
initialize();
|
||
|
|
|
||
|
|
return $this;
|
||
|
|
});
|
||
|
|
};
|
||
|
|
});
|