Your IP : 18.118.148.249
/*!
* perfect-scrollbar v1.4.0
* (c) 2018 Hyunje Jun
* @license MIT
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.PerfectScrollbar = factory());
}(this, (function () { 'use strict';
function get(element) {
return getComputedStyle(element);
}
function set(element, obj) {
for (var key in obj) {
var val = obj[key];
if (typeof val === 'number') {
val = val + "px";
}
element.style[key] = val;
}
return element;
}
function div(className) {
var div = document.createElement('div');
div.className = className;
return div;
}
var elMatches =
typeof Element !== 'undefined' &&
(Element.prototype.matches ||
Element.prototype.webkitMatchesSelector ||
Element.prototype.mozMatchesSelector ||
Element.prototype.msMatchesSelector);
function matches(element, query) {
if (!elMatches) {
throw new Error('No element matching method supported');
}
return elMatches.call(element, query);
}
function remove(element) {
if (element.remove) {
element.remove();
} else {
if (element.parentNode) {
element.parentNode.removeChild(element);
}
}
}
function queryChildren(element, selector) {
return Array.prototype.filter.call(element.children, function (child) { return matches(child, selector); }
);
}
var cls = {
main: 'ps',
element: {
thumb: function (x) { return ("ps__thumb-" + x); },
rail: function (x) { return ("ps__rail-" + x); },
consuming: 'ps__child--consume',
},
state: {
focus: 'ps--focus',
clicking: 'ps--clicking',
active: function (x) { return ("ps--active-" + x); },
scrolling: function (x) { return ("ps--scrolling-" + x); },
},
};
/*
* Helper methods
*/
var scrollingClassTimeout = { x: null, y: null };
function addScrollingClass(i, x) {
var classList = i.element.classList;
var className = cls.state.scrolling(x);
if (classList.contains(className)) {
clearTimeout(scrollingClassTimeout[x]);
} else {
classList.add(className);
}
}
function removeScrollingClass(i, x) {
scrollingClassTimeout[x] = setTimeout(
function () { return i.isAlive && i.element.classList.remove(cls.state.scrolling(x)); },
i.settings.scrollingThreshold
);
}
function setScrollingClassInstantly(i, x) {
addScrollingClass(i, x);
removeScrollingClass(i, x);
}
var EventElement = function EventElement(element) {
this.element = element;
this.handlers = {};
};
var prototypeAccessors = { isEmpty: { configurable: true } };
EventElement.prototype.bind = function bind (eventName, handler) {
if (typeof this.handlers[eventName] === 'undefined') {
this.handlers[eventName] = [];
}
this.handlers[eventName].push(handler);
this.element.addEventListener(eventName, handler, false);
};
EventElement.prototype.unbind = function unbind (eventName, target) {
var this$1 = this;
this.handlers[eventName] = this.handlers[eventName].filter(function (handler) {
if (target && handler !== target) {
return true;
}
this$1.element.removeEventListener(eventName, handler, false);
return false;
});
};
EventElement.prototype.unbindAll = function unbindAll () {
var this$1 = this;
for (var name in this$1.handlers) {
this$1.unbind(name);
}
};
prototypeAccessors.isEmpty.get = function () {
var this$1 = this;
return Object.keys(this.handlers).every(
function (key) { return this$1.handlers[key].length === 0; }
);
};
Object.defineProperties( EventElement.prototype, prototypeAccessors );
var EventManager = function EventManager() {
this.eventElements = [];
};
EventManager.prototype.eventElement = function eventElement (element) {
var ee = this.eventElements.filter(function (ee) { return ee.element === element; })[0];
if (!ee) {
ee = new EventElement(element);
this.eventElements.push(ee);
}
return ee;
};
EventManager.prototype.bind = function bind (element, eventName, handler) {
this.eventElement(element).bind(eventName, handler);
};
EventManager.prototype.unbind = function unbind (element, eventName, handler) {
var ee = this.eventElement(element);
ee.unbind(eventName, handler);
if (ee.isEmpty) {
// remove
this.eventElements.splice(this.eventElements.indexOf(ee), 1);
}
};
EventManager.prototype.unbindAll = function unbindAll () {
this.eventElements.forEach(function (e) { return e.unbindAll(); });
this.eventElements = [];
};
EventManager.prototype.once = function once (element, eventName, handler) {
var ee = this.eventElement(element);
var onceHandler = function (evt) {
ee.unbind(eventName, onceHandler);
handler(evt);
};
ee.bind(eventName, onceHandler);
};
function createEvent(name) {
if (typeof window.CustomEvent === 'function') {
return new CustomEvent(name);
} else {
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent(name, false, false, undefined);
return evt;
}
}
var processScrollDiff = function(
i,
axis,
diff,
useScrollingClass,
forceFireReachEvent
) {
if ( useScrollingClass === void 0 ) useScrollingClass = true;
if ( forceFireReachEvent === void 0 ) forceFireReachEvent = false;
var fields;
if (axis === 'top') {
fields = [
'contentHeight',
'containerHeight',
'scrollTop',
'y',
'up',
'down' ];
} else if (axis === 'left') {
fields = [
'contentWidth',
'containerWidth',
'scrollLeft',
'x',
'left',
'right' ];
} else {
throw new Error('A proper axis should be provided');
}
processScrollDiff$1(i, diff, fields, useScrollingClass, forceFireReachEvent);
};
function processScrollDiff$1(
i,
diff,
ref,
useScrollingClass,
forceFireReachEvent
) {
var contentHeight = ref[0];
var containerHeight = ref[1];
var scrollTop = ref[2];
var y = ref[3];
var up = ref[4];
var down = ref[5];
if ( useScrollingClass === void 0 ) useScrollingClass = true;
if ( forceFireReachEvent === void 0 ) forceFireReachEvent = false;
var element = i.element;
// reset reach
i.reach[y] = null;
// 1 for subpixel rounding
if (element[scrollTop] < 1) {
i.reach[y] = 'start';
}
// 1 for subpixel rounding
if (element[scrollTop] > i[contentHeight] - i[containerHeight] - 1) {
i.reach[y] = 'end';
}
if (diff) {
element.dispatchEvent(createEvent(("ps-scroll-" + y)));
if (diff < 0) {
element.dispatchEvent(createEvent(("ps-scroll-" + up)));
} else if (diff > 0) {
element.dispatchEvent(createEvent(("ps-scroll-" + down)));
}
if (useScrollingClass) {
setScrollingClassInstantly(i, y);
}
}
if (i.reach[y] && (diff || forceFireReachEvent)) {
element.dispatchEvent(createEvent(("ps-" + y + "-reach-" + (i.reach[y]))));
}
}
function toInt(x) {
return parseInt(x, 10) || 0;
}
function isEditable(el) {
return (
matches(el, 'input,[contenteditable]') ||
matches(el, 'select,[contenteditable]') ||
matches(el, 'textarea,[contenteditable]') ||
matches(el, 'button,[contenteditable]')
);
}
function outerWidth(element) {
var styles = get(element);
return (
toInt(styles.width) +
toInt(styles.paddingLeft) +
toInt(styles.paddingRight) +
toInt(styles.borderLeftWidth) +
toInt(styles.borderRightWidth)
);
}
var env = {
isWebKit:
typeof document !== 'undefined' &&
'WebkitAppearance' in document.documentElement.style,
supportsTouch:
typeof window !== 'undefined' &&
('ontouchstart' in window ||
(window.DocumentTouch && document instanceof window.DocumentTouch)),
supportsIePointer:
typeof navigator !== 'undefined' && navigator.msMaxTouchPoints,
isChrome:
typeof navigator !== 'undefined' &&
/Chrome/i.test(navigator && navigator.userAgent),
};
var updateGeometry = function(i) {
var element = i.element;
var roundedScrollTop = Math.floor(element.scrollTop);
i.containerWidth = element.clientWidth;
i.containerHeight = element.clientHeight;
i.contentWidth = element.scrollWidth;
i.contentHeight = element.scrollHeight;
if (!element.contains(i.scrollbarXRail)) {
// clean up and append
queryChildren(element, cls.element.rail('x')).forEach(function (el) { return remove(el); }
);
element.appendChild(i.scrollbarXRail);
}
if (!element.contains(i.scrollbarYRail)) {
// clean up and append
queryChildren(element, cls.element.rail('y')).forEach(function (el) { return remove(el); }
);
element.appendChild(i.scrollbarYRail);
}
if (
!i.settings.suppressScrollX &&
i.containerWidth + i.settings.scrollXMarginOffset < i.contentWidth
) {
i.scrollbarXActive = true;
i.railXWidth = i.containerWidth - i.railXMarginWidth;
i.railXRatio = i.containerWidth / i.railXWidth;
i.scrollbarXWidth = getThumbSize(
i,
toInt(i.railXWidth * i.containerWidth / i.contentWidth)
);
i.scrollbarXLeft = toInt(
(i.negativeScrollAdjustment + element.scrollLeft) *
(i.railXWidth - i.scrollbarXWidth) /
(i.contentWidth - i.containerWidth)
);
} else {
i.scrollbarXActive = false;
}
if (
!i.settings.suppressScrollY &&
i.containerHeight + i.settings.scrollYMarginOffset < i.contentHeight
) {
i.scrollbarYActive = true;
i.railYHeight = i.containerHeight - i.railYMarginHeight;
i.railYRatio = i.containerHeight / i.railYHeight;
i.scrollbarYHeight = getThumbSize(
i,
toInt(i.railYHeight * i.containerHeight / i.contentHeight)
);
i.scrollbarYTop = toInt(
roundedScrollTop *
(i.railYHeight - i.scrollbarYHeight) /
(i.contentHeight - i.containerHeight)
);
} else {
i.scrollbarYActive = false;
}
if (i.scrollbarXLeft >= i.railXWidth - i.scrollbarXWidth) {
i.scrollbarXLeft = i.railXWidth - i.scrollbarXWidth;
}
if (i.scrollbarYTop >= i.railYHeight - i.scrollbarYHeight) {
i.scrollbarYTop = i.railYHeight - i.scrollbarYHeight;
}
updateCss(element, i);
if (i.scrollbarXActive) {
element.classList.add(cls.state.active('x'));
} else {
element.classList.remove(cls.state.active('x'));
i.scrollbarXWidth = 0;
i.scrollbarXLeft = 0;
element.scrollLeft = 0;
}
if (i.scrollbarYActive) {
element.classList.add(cls.state.active('y'));
} else {
element.classList.remove(cls.state.active('y'));
i.scrollbarYHeight = 0;
i.scrollbarYTop = 0;
element.scrollTop = 0;
}
};
function getThumbSize(i, thumbSize) {
if (i.settings.minScrollbarLength) {
thumbSize = Math.max(thumbSize, i.settings.minScrollbarLength);
}
if (i.settings.maxScrollbarLength) {
thumbSize = Math.min(thumbSize, i.settings.maxScrollbarLength);
}
return thumbSize;
}
function updateCss(element, i) {
var xRailOffset = { width: i.railXWidth };
var roundedScrollTop = Math.floor(element.scrollTop);
if (i.isRtl) {
xRailOffset.left =
i.negativeScrollAdjustment +
element.scrollLeft +
i.containerWidth -
i.contentWidth;
} else {
xRailOffset.left = element.scrollLeft;
}
if (i.isScrollbarXUsingBottom) {
xRailOffset.bottom = i.scrollbarXBottom - roundedScrollTop;
} else {
xRailOffset.top = i.scrollbarXTop + roundedScrollTop;
}
set(i.scrollbarXRail, xRailOffset);
var yRailOffset = { top: roundedScrollTop, height: i.railYHeight };
if (i.isScrollbarYUsingRight) {
if (i.isRtl) {
yRailOffset.right =
i.contentWidth -
(i.negativeScrollAdjustment + element.scrollLeft) -
i.scrollbarYRight -
i.scrollbarYOuterWidth;
} else {
yRailOffset.right = i.scrollbarYRight - element.scrollLeft;
}
} else {
if (i.isRtl) {
yRailOffset.left =
i.negativeScrollAdjustment +
element.scrollLeft +
i.containerWidth * 2 -
i.contentWidth -
i.scrollbarYLeft -
i.scrollbarYOuterWidth;
} else {
yRailOffset.left = i.scrollbarYLeft + element.scrollLeft;
}
}
set(i.scrollbarYRail, yRailOffset);
set(i.scrollbarX, {
left: i.scrollbarXLeft,
width: i.scrollbarXWidth - i.railBorderXWidth,
});
set(i.scrollbarY, {
top: i.scrollbarYTop,
height: i.scrollbarYHeight - i.railBorderYWidth,
});
}
var clickRail = function(i) {
i.event.bind(i.scrollbarY, 'mousedown', function (e) { return e.stopPropagation(); });
i.event.bind(i.scrollbarYRail, 'mousedown', function (e) {
var positionTop =
e.pageY -
window.pageYOffset -
i.scrollbarYRail.getBoundingClientRect().top;
var direction = positionTop > i.scrollbarYTop ? 1 : -1;
i.element.scrollTop += direction * i.containerHeight;
updateGeometry(i);
e.stopPropagation();
});
i.event.bind(i.scrollbarX, 'mousedown', function (e) { return e.stopPropagation(); });
i.event.bind(i.scrollbarXRail, 'mousedown', function (e) {
var positionLeft =
e.pageX -
window.pageXOffset -
i.scrollbarXRail.getBoundingClientRect().left;
var direction = positionLeft > i.scrollbarXLeft ? 1 : -1;
i.element.scrollLeft += direction * i.containerWidth;
updateGeometry(i);
e.stopPropagation();
});
};
var dragThumb = function(i) {
bindMouseScrollHandler(i, [
'containerWidth',
'contentWidth',
'pageX',
'railXWidth',
'scrollbarX',
'scrollbarXWidth',
'scrollLeft',
'x',
'scrollbarXRail' ]);
bindMouseScrollHandler(i, [
'containerHeight',
'contentHeight',
'pageY',
'railYHeight',
'scrollbarY',
'scrollbarYHeight',
'scrollTop',
'y',
'scrollbarYRail' ]);
};
function bindMouseScrollHandler(
i,
ref
) {
var containerHeight = ref[0];
var contentHeight = ref[1];
var pageY = ref[2];
var railYHeight = ref[3];
var scrollbarY = ref[4];
var scrollbarYHeight = ref[5];
var scrollTop = ref[6];
var y = ref[7];
var scrollbarYRail = ref[8];
var element = i.element;
var startingScrollTop = null;
var startingMousePageY = null;
var scrollBy = null;
function mouseMoveHandler(e) {
element[scrollTop] =
startingScrollTop + scrollBy * (e[pageY] - startingMousePageY);
addScrollingClass(i, y);
updateGeometry(i);
e.stopPropagation();
e.preventDefault();
}
function mouseUpHandler() {
removeScrollingClass(i, y);
i[scrollbarYRail].classList.remove(cls.state.clicking);
i.event.unbind(i.ownerDocument, 'mousemove', mouseMoveHandler);
}
i.event.bind(i[scrollbarY], 'mousedown', function (e) {
startingScrollTop = element[scrollTop];
startingMousePageY = e[pageY];
scrollBy =
(i[contentHeight] - i[containerHeight]) /
(i[railYHeight] - i[scrollbarYHeight]);
i.event.bind(i.ownerDocument, 'mousemove', mouseMoveHandler);
i.event.once(i.ownerDocument, 'mouseup', mouseUpHandler);
i[scrollbarYRail].classList.add(cls.state.clicking);
e.stopPropagation();
e.preventDefault();
});
}
var keyboard = function(i) {
var element = i.element;
var elementHovered = function () { return matches(element, ':hover'); };
var scrollbarFocused = function () { return matches(i.scrollbarX, ':focus') || matches(i.scrollbarY, ':focus'); };
function shouldPreventDefault(deltaX, deltaY) {
var scrollTop = Math.floor(element.scrollTop);
if (deltaX === 0) {
if (!i.scrollbarYActive) {
return false;
}
if (
(scrollTop === 0 && deltaY > 0) ||
(scrollTop >= i.contentHeight - i.containerHeight && deltaY < 0)
) {
return !i.settings.wheelPropagation;
}
}
var scrollLeft = element.scrollLeft;
if (deltaY === 0) {
if (!i.scrollbarXActive) {
return false;
}
if (
(scrollLeft === 0 && deltaX < 0) ||
(scrollLeft >= i.contentWidth - i.containerWidth && deltaX > 0)
) {
return !i.settings.wheelPropagation;
}
}
return true;
}
i.event.bind(i.ownerDocument, 'keydown', function (e) {
if (
(e.isDefaultPrevented && e.isDefaultPrevented()) ||
e.defaultPrevented
) {
return;
}
if (!elementHovered() && !scrollbarFocused()) {
return;
}
var activeElement = document.activeElement
? document.activeElement
: i.ownerDocument.activeElement;
if (activeElement) {
if (activeElement.tagName === 'IFRAME') {
activeElement = activeElement.contentDocument.activeElement;
} else {
// go deeper if element is a webcomponent
while (activeElement.shadowRoot) {
activeElement = activeElement.shadowRoot.activeElement;
}
}
if (isEditable(activeElement)) {
return;
}
}
var deltaX = 0;
var deltaY = 0;
switch (e.which) {
case 37: // left
if (e.metaKey) {
deltaX = -i.contentWidth;
} else if (e.altKey) {
deltaX = -i.containerWidth;
} else {
deltaX = -30;
}
break;
case 38: // up
if (e.metaKey) {
deltaY = i.contentHeight;
} else if (e.altKey) {
deltaY = i.containerHeight;
} else {
deltaY = 30;
}
break;
case 39: // right
if (e.metaKey) {
deltaX = i.contentWidth;
} else if (e.altKey) {
deltaX = i.containerWidth;
} else {
deltaX = 30;
}
break;
case 40: // down
if (e.metaKey) {
deltaY = -i.contentHeight;
} else if (e.altKey) {
deltaY = -i.containerHeight;
} else {
deltaY = -30;
}
break;
case 32: // space bar
if (e.shiftKey) {
deltaY = i.containerHeight;
} else {
deltaY = -i.containerHeight;
}
break;
case 33: // page up
deltaY = i.containerHeight;
break;
case 34: // page down
deltaY = -i.containerHeight;
break;
case 36: // home
deltaY = i.contentHeight;
break;
case 35: // end
deltaY = -i.contentHeight;
break;
default:
return;
}
if (i.settings.suppressScrollX && deltaX !== 0) {
return;
}
if (i.settings.suppressScrollY && deltaY !== 0) {
return;
}
element.scrollTop -= deltaY;
element.scrollLeft += deltaX;
updateGeometry(i);
if (shouldPreventDefault(deltaX, deltaY)) {
e.preventDefault();
}
});
};
var wheel = function(i) {
var element = i.element;
function shouldPreventDefault(deltaX, deltaY) {
var roundedScrollTop = Math.floor(element.scrollTop);
var isTop = element.scrollTop === 0;
var isBottom =
roundedScrollTop + element.offsetHeight === element.scrollHeight;
var isLeft = element.scrollLeft === 0;
var isRight =
element.scrollLeft + element.offsetWidth === element.scrollWidth;
var hitsBound;
// pick axis with primary direction
if (Math.abs(deltaY) > Math.abs(deltaX)) {
hitsBound = isTop || isBottom;
} else {
hitsBound = isLeft || isRight;
}
return hitsBound ? !i.settings.wheelPropagation : true;
}
function getDeltaFromEvent(e) {
var deltaX = e.deltaX;
var deltaY = -1 * e.deltaY;
if (typeof deltaX === 'undefined' || typeof deltaY === 'undefined') {
// OS X Safari
deltaX = -1 * e.wheelDeltaX / 6;
deltaY = e.wheelDeltaY / 6;
}
if (e.deltaMode && e.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.wheelDelta;
}
if (e.shiftKey) {
// reverse axis with shift key
return [-deltaY, -deltaX];
}
return [deltaX, deltaY];
}
function shouldBeConsumedByChild(target, deltaX, deltaY) {
// FIXME: this is a workaround for <select> issue in FF and IE #571
if (!env.isWebKit && element.querySelector('select:focus')) {
return true;
}
if (!element.contains(target)) {
return false;
}
var cursor = target;
while (cursor && cursor !== element) {
if (cursor.classList.contains(cls.element.consuming)) {
return true;
}
var style = get(cursor);
var overflow = [style.overflow, style.overflowX, style.overflowY].join(
''
);
// if scrollable
if (overflow.match(/(scroll|auto)/)) {
var maxScrollTop = cursor.scrollHeight - cursor.clientHeight;
if (maxScrollTop > 0) {
if (
!(cursor.scrollTop === 0 && deltaY > 0) &&
!(cursor.scrollTop === maxScrollTop && deltaY < 0)
) {
return true;
}
}
var maxScrollLeft = cursor.scrollWidth - cursor.clientWidth;
if (maxScrollLeft > 0) {
if (
!(cursor.scrollLeft === 0 && deltaX < 0) &&
!(cursor.scrollLeft === maxScrollLeft && deltaX > 0)
) {
return true;
}
}
}
cursor = cursor.parentNode;
}
return false;
}
function mousewheelHandler(e) {
var ref = getDeltaFromEvent(e);
var deltaX = ref[0];
var deltaY = ref[1];
if (shouldBeConsumedByChild(e.target, deltaX, deltaY)) {
return;
}
var shouldPrevent = false;
if (!i.settings.useBothWheelAxes) {
// deltaX will only be used for horizontal scrolling and deltaY will
// only be used for vertical scrolling - this is the default
element.scrollTop -= deltaY * i.settings.wheelSpeed;
element.scrollLeft += deltaX * i.settings.wheelSpeed;
} else if (i.scrollbarYActive && !i.scrollbarXActive) {
// only vertical scrollbar is active and useBothWheelAxes option is
// active, so let's scroll vertical bar using both mouse wheel axes
if (deltaY) {
element.scrollTop -= deltaY * i.settings.wheelSpeed;
} else {
element.scrollTop += deltaX * i.settings.wheelSpeed;
}
shouldPrevent = true;
} else if (i.scrollbarXActive && !i.scrollbarYActive) {
// useBothWheelAxes and only horizontal bar is active, so use both
// wheel axes for horizontal bar
if (deltaX) {
element.scrollLeft += deltaX * i.settings.wheelSpeed;
} else {
element.scrollLeft -= deltaY * i.settings.wheelSpeed;
}
shouldPrevent = true;
}
updateGeometry(i);
shouldPrevent = shouldPrevent || shouldPreventDefault(deltaX, deltaY);
if (shouldPrevent && !e.ctrlKey) {
e.stopPropagation();
e.preventDefault();
}
}
if (typeof window.onwheel !== 'undefined') {
i.event.bind(element, 'wheel', mousewheelHandler);
} else if (typeof window.onmousewheel !== 'undefined') {
i.event.bind(element, 'mousewheel', mousewheelHandler);
}
};
var touch = function(i) {
if (!env.supportsTouch && !env.supportsIePointer) {
return;
}
var element = i.element;
function shouldPrevent(deltaX, deltaY) {
var scrollTop = Math.floor(element.scrollTop);
var scrollLeft = element.scrollLeft;
var magnitudeX = Math.abs(deltaX);
var magnitudeY = Math.abs(deltaY);
if (magnitudeY > magnitudeX) {
// user is perhaps trying to swipe up/down the page
if (
(deltaY < 0 && scrollTop === i.contentHeight - i.containerHeight) ||
(deltaY > 0 && scrollTop === 0)
) {
// set prevent for mobile Chrome refresh
return window.scrollY === 0 && deltaY > 0 && env.isChrome;
}
} else if (magnitudeX > magnitudeY) {
// user is perhaps trying to swipe left/right across the page
if (
(deltaX < 0 && scrollLeft === i.contentWidth - i.containerWidth) ||
(deltaX > 0 && scrollLeft === 0)
) {
return true;
}
}
return true;
}
function applyTouchMove(differenceX, differenceY) {
element.scrollTop -= differenceY;
element.scrollLeft -= differenceX;
updateGeometry(i);
}
var startOffset = {};
var startTime = 0;
var speed = {};
var easingLoop = null;
function getTouch(e) {
if (e.targetTouches) {
return e.targetTouches[0];
} else {
// Maybe IE pointer
return e;
}
}
function shouldHandle(e) {
if (e.pointerType && e.pointerType === 'pen' && e.buttons === 0) {
return false;
}
if (e.targetTouches && e.targetTouches.length === 1) {
return true;
}
if (
e.pointerType &&
e.pointerType !== 'mouse' &&
e.pointerType !== e.MSPOINTER_TYPE_MOUSE
) {
return true;
}
return false;
}
function touchStart(e) {
if (!shouldHandle(e)) {
return;
}
var touch = getTouch(e);
startOffset.pageX = touch.pageX;
startOffset.pageY = touch.pageY;
startTime = new Date().getTime();
if (easingLoop !== null) {
clearInterval(easingLoop);
}
}
function shouldBeConsumedByChild(target, deltaX, deltaY) {
if (!element.contains(target)) {
return false;
}
var cursor = target;
while (cursor && cursor !== element) {
if (cursor.classList.contains(cls.element.consuming)) {
return true;
}
var style = get(cursor);
var overflow = [style.overflow, style.overflowX, style.overflowY].join(
''
);
// if scrollable
if (overflow.match(/(scroll|auto)/)) {
var maxScrollTop = cursor.scrollHeight - cursor.clientHeight;
if (maxScrollTop > 0) {
if (
!(cursor.scrollTop === 0 && deltaY > 0) &&
!(cursor.scrollTop === maxScrollTop && deltaY < 0)
) {
return true;
}
}
var maxScrollLeft = cursor.scrollLeft - cursor.clientWidth;
if (maxScrollLeft > 0) {
if (
!(cursor.scrollLeft === 0 && deltaX < 0) &&
!(cursor.scrollLeft === maxScrollLeft && deltaX > 0)
) {
return true;
}
}
}
cursor = cursor.parentNode;
}
return false;
}
function touchMove(e) {
if (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;
if (shouldBeConsumedByChild(e.target, differenceX, differenceY)) {
return;
}
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 (shouldPrevent(differenceX, differenceY)) {
e.preventDefault();
}
}
}
function touchEnd() {
if (i.settings.swipeEasing) {
clearInterval(easingLoop);
easingLoop = setInterval(function() {
if (i.isInitialized) {
clearInterval(easingLoop);
return;
}
if (!speed.x && !speed.y) {
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 (env.supportsTouch) {
i.event.bind(element, 'touchstart', touchStart);
i.event.bind(element, 'touchmove', touchMove);
i.event.bind(element, 'touchend', touchEnd);
} else if (env.supportsIePointer) {
if (window.PointerEvent) {
i.event.bind(element, 'pointerdown', touchStart);
i.event.bind(element, 'pointermove', touchMove);
i.event.bind(element, 'pointerup', touchEnd);
} else if (window.MSPointerEvent) {
i.event.bind(element, 'MSPointerDown', touchStart);
i.event.bind(element, 'MSPointerMove', touchMove);
i.event.bind(element, 'MSPointerUp', touchEnd);
}
}
};
var defaultSettings = function () { return ({
handlers: ['click-rail', 'drag-thumb', 'keyboard', 'wheel', 'touch'],
maxScrollbarLength: null,
minScrollbarLength: null,
scrollingThreshold: 1000,
scrollXMarginOffset: 0,
scrollYMarginOffset: 0,
suppressScrollX: false,
suppressScrollY: false,
swipeEasing: true,
useBothWheelAxes: false,
wheelPropagation: true,
wheelSpeed: 1,
}); };
var handlers = {
'click-rail': clickRail,
'drag-thumb': dragThumb,
keyboard: keyboard,
wheel: wheel,
touch: touch,
};
var PerfectScrollbar = function PerfectScrollbar(element, userSettings) {
var this$1 = this;
if ( userSettings === void 0 ) userSettings = {};
if (typeof element === 'string') {
element = document.querySelector(element);
}
if (!element || !element.nodeName) {
throw new Error('no element is specified to initialize PerfectScrollbar');
}
this.element = element;
element.classList.add(cls.main);
this.settings = defaultSettings();
for (var key in userSettings) {
this$1.settings[key] = userSettings[key];
}
this.containerWidth = null;
this.containerHeight = null;
this.contentWidth = null;
this.contentHeight = null;
var focus = function () { return element.classList.add(cls.state.focus); };
var blur = function () { return element.classList.remove(cls.state.focus); };
this.isRtl = get(element).direction === 'rtl';
this.isNegativeScroll = (function () {
var originalScrollLeft = element.scrollLeft;
var result = null;
element.scrollLeft = -1;
result = element.scrollLeft < 0;
element.scrollLeft = originalScrollLeft;
return result;
})();
this.negativeScrollAdjustment = this.isNegativeScroll
? element.scrollWidth - element.clientWidth
: 0;
this.event = new EventManager();
this.ownerDocument = element.ownerDocument || document;
this.scrollbarXRail = div(cls.element.rail('x'));
element.appendChild(this.scrollbarXRail);
this.scrollbarX = div(cls.element.thumb('x'));
this.scrollbarXRail.appendChild(this.scrollbarX);
this.scrollbarX.setAttribute('tabindex', 0);
this.event.bind(this.scrollbarX, 'focus', focus);
this.event.bind(this.scrollbarX, 'blur', blur);
this.scrollbarXActive = null;
this.scrollbarXWidth = null;
this.scrollbarXLeft = null;
var railXStyle = get(this.scrollbarXRail);
this.scrollbarXBottom = parseInt(railXStyle.bottom, 10);
if (isNaN(this.scrollbarXBottom)) {
this.isScrollbarXUsingBottom = false;
this.scrollbarXTop = toInt(railXStyle.top);
} else {
this.isScrollbarXUsingBottom = true;
}
this.railBorderXWidth =
toInt(railXStyle.borderLeftWidth) + toInt(railXStyle.borderRightWidth);
// Set rail to display:block to calculate margins
set(this.scrollbarXRail, { display: 'block' });
this.railXMarginWidth =
toInt(railXStyle.marginLeft) + toInt(railXStyle.marginRight);
set(this.scrollbarXRail, { display: '' });
this.railXWidth = null;
this.railXRatio = null;
this.scrollbarYRail = div(cls.element.rail('y'));
element.appendChild(this.scrollbarYRail);
this.scrollbarY = div(cls.element.thumb('y'));
this.scrollbarYRail.appendChild(this.scrollbarY);
this.scrollbarY.setAttribute('tabindex', 0);
this.event.bind(this.scrollbarY, 'focus', focus);
this.event.bind(this.scrollbarY, 'blur', blur);
this.scrollbarYActive = null;
this.scrollbarYHeight = null;
this.scrollbarYTop = null;
var railYStyle = get(this.scrollbarYRail);
this.scrollbarYRight = parseInt(railYStyle.right, 10);
if (isNaN(this.scrollbarYRight)) {
this.isScrollbarYUsingRight = false;
this.scrollbarYLeft = toInt(railYStyle.left);
} else {
this.isScrollbarYUsingRight = true;
}
this.scrollbarYOuterWidth = this.isRtl ? outerWidth(this.scrollbarY) : null;
this.railBorderYWidth =
toInt(railYStyle.borderTopWidth) + toInt(railYStyle.borderBottomWidth);
set(this.scrollbarYRail, { display: 'block' });
this.railYMarginHeight =
toInt(railYStyle.marginTop) + toInt(railYStyle.marginBottom);
set(this.scrollbarYRail, { display: '' });
this.railYHeight = null;
this.railYRatio = null;
this.reach = {
x:
element.scrollLeft <= 0
? 'start'
: element.scrollLeft >= this.contentWidth - this.containerWidth
? 'end'
: null,
y:
element.scrollTop <= 0
? 'start'
: element.scrollTop >= this.contentHeight - this.containerHeight
? 'end'
: null,
};
this.isAlive = true;
this.settings.handlers.forEach(function (handlerName) { return handlers[handlerName](this$1); });
this.lastScrollTop = Math.floor(element.scrollTop); // for onScroll only
this.lastScrollLeft = element.scrollLeft; // for onScroll only
this.event.bind(this.element, 'scroll', function (e) { return this$1.onScroll(e); });
updateGeometry(this);
};
PerfectScrollbar.prototype.update = function update () {
if (!this.isAlive) {
return;
}
// Recalcuate negative scrollLeft adjustment
this.negativeScrollAdjustment = this.isNegativeScroll
? this.element.scrollWidth - this.element.clientWidth
: 0;
// Recalculate rail margins
set(this.scrollbarXRail, { display: 'block' });
set(this.scrollbarYRail, { display: 'block' });
this.railXMarginWidth =
toInt(get(this.scrollbarXRail).marginLeft) +
toInt(get(this.scrollbarXRail).marginRight);
this.railYMarginHeight =
toInt(get(this.scrollbarYRail).marginTop) +
toInt(get(this.scrollbarYRail).marginBottom);
// Hide scrollbars not to affect scrollWidth and scrollHeight
set(this.scrollbarXRail, { display: 'none' });
set(this.scrollbarYRail, { display: 'none' });
updateGeometry(this);
processScrollDiff(this, 'top', 0, false, true);
processScrollDiff(this, 'left', 0, false, true);
set(this.scrollbarXRail, { display: '' });
set(this.scrollbarYRail, { display: '' });
};
PerfectScrollbar.prototype.onScroll = function onScroll (e) {
if (!this.isAlive) {
return;
}
updateGeometry(this);
processScrollDiff(this, 'top', this.element.scrollTop - this.lastScrollTop);
processScrollDiff(
this,
'left',
this.element.scrollLeft - this.lastScrollLeft
);
this.lastScrollTop = Math.floor(this.element.scrollTop);
this.lastScrollLeft = this.element.scrollLeft;
};
PerfectScrollbar.prototype.destroy = function destroy () {
if (!this.isAlive) {
return;
}
this.event.unbindAll();
remove(this.scrollbarX);
remove(this.scrollbarY);
remove(this.scrollbarXRail);
remove(this.scrollbarYRail);
this.removePsClasses();
// unset elements
this.element = null;
this.scrollbarX = null;
this.scrollbarY = null;
this.scrollbarXRail = null;
this.scrollbarYRail = null;
this.isAlive = false;
};
PerfectScrollbar.prototype.removePsClasses = function removePsClasses () {
this.element.className = this.element.className
.split(' ')
.filter(function (name) { return !name.match(/^ps([-_].+|)$/); })
.join(' ');
};
return PerfectScrollbar;
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