@alifd/next
Version:
A configurable component library for web built on React.
279 lines (278 loc) • 11.2 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var react_dom_1 = require("react-dom");
var trackHelper_1 = require("./trackHelper");
var EventHandlers = {
// Event handler for previous and next
changeSlide: function (options) {
var slideOffset, targetSlide;
var unevenOffset = this.state.slideCount % this.props.slidesToScroll !== 0;
var indexOffset = unevenOffset
? 0
: (this.state.slideCount - this.state.currentSlide) % this.props.slidesToScroll;
if (options.message === 'previous') {
slideOffset =
indexOffset === 0
? this.props.slidesToScroll
: this.props.slidesToShow - indexOffset;
targetSlide = this.state.currentSlide - slideOffset;
}
else if (options.message === 'next') {
slideOffset = indexOffset === 0 ? this.props.slidesToScroll : indexOffset;
targetSlide = this.state.currentSlide + slideOffset;
}
else if (options.message === 'dots' || options.message === 'children') {
// Click on dots
targetSlide = options.index * options.slidesToScroll;
if (targetSlide === options.currentSlide) {
return;
}
}
else if (options.message === 'index') {
targetSlide = options.index;
if (targetSlide === options.currentSlide) {
return;
}
}
this.slideHandler(targetSlide);
},
// Accessibility handler for previous and next
keyHandler: function (e) {
//Don't slide if the cursor is inside the form fields and arrow keys are pressed
if (!e.target.tagName.match('TEXTAREA|INPUT|SELECT')) {
if (e.keyCode === 37 && this.props.accessibility === true) {
this.changeSlide({
message: this.props.rtl === true ? 'next' : 'previous',
});
}
else if (e.keyCode === 39 && this.props.accessibility === true) {
this.changeSlide({
message: this.props.rtl === true ? 'previous' : 'next',
});
}
}
},
// Focus on selecting a slide (click handler on track)
selectHandler: function (options) {
this.changeSlide(options);
},
swipeStart: function (e) {
if (this.props.swipe === false ||
// @ts-expect-error 这里逻辑上存在重复
('ontouchend' in document && this.props.swipe === false)) {
return;
}
else if (this.props.draggable === false && e.type.indexOf('mouse') !== -1) {
return;
}
var posX = e.touches
? e.touches[0].pageX
: e.clientX;
var posY = e.touches
? e.touches[0].pageY
: e.clientY;
this.setState({
dragging: true,
touchObject: {
startX: posX,
startY: posY,
curX: posX,
curY: posY,
},
});
},
swipeMove: function (e) {
if (!this.state.dragging) {
return;
}
if (this.state.animating) {
return;
}
var touchObject = this.state.touchObject;
var curLeft = (0, trackHelper_1.getTrackLeft)(tslib_1.__assign(tslib_1.__assign({ slideIndex: this.state.currentSlide,
// @ts-expect-error 这里拿 ref 的方式是不正确的，应该是 this.track
trackRef: this.refs.track }, this.props), this.state));
touchObject.curX = e.touches
? e.touches[0].pageX
: e.clientX;
touchObject.curY = e.touches
? e.touches[0].pageY
: e.clientY;
touchObject.swipeLength = Math.round(Math.sqrt(Math.pow(touchObject.curX - touchObject.startX, 2)));
var positionOffset = (this.props.rtl === false ? 1 : -1) * (touchObject.curX > touchObject.startX ? 1 : -1);
if (this.props.verticalSwiping === true) {
touchObject.swipeLength = Math.round(Math.sqrt(Math.pow(touchObject.curY - touchObject.startY, 2)));
positionOffset = touchObject.curY > touchObject.startY ? 1 : -1;
}
var currentSlide = this.state.currentSlide;
var dotCount = Math.ceil(this.state.slideCount / this.props.slidesToScroll);
var swipeDirection = this.swipeDirection(this.state.touchObject);
var touchSwipeLength = touchObject.swipeLength;
if (this.props.infinite === false) {
if ((currentSlide === 0 && swipeDirection === 'right') ||
(currentSlide + 1 >= dotCount && swipeDirection === 'left')) {
touchSwipeLength = touchObject.swipeLength * this.props.edgeFriction;
if (this.state.edgeDragged === false && this.props.edgeEvent) {
this.props.edgeEvent(swipeDirection);
this.setState({ edgeDragged: true });
}
}
}
if (this.state.swiped === false && this.props.swipeEvent) {
this.props.swipeEvent(swipeDirection);
this.setState({ swiped: true });
}
var swipeLeft = curLeft + touchSwipeLength * positionOffset;
this.setState({
touchObject: touchObject,
swipeLeft: swipeLeft,
trackStyle: (0, trackHelper_1.getTrackCSS)(tslib_1.__assign(tslib_1.__assign({ left: swipeLeft }, this.props), this.state)),
});
if (Math.abs(touchObject.curX - touchObject.startX) <
Math.abs(touchObject.curY - touchObject.startY) * 0.8) {
return;
}
if (touchObject.swipeLength > 4) {
e.preventDefault();
}
},
getNavigableIndexes: function () {
var max;
var breakPoint = 0;
var counter = 0;
var indexes = [];
if (!this.props.infinite) {
max = this.state.slideCount;
}
else {
breakPoint = this.props.slidesToShow * -1;
counter = this.props.slidesToShow * -1;
max = this.state.slideCount * 2;
}
while (breakPoint < max) {
indexes.push(breakPoint);
breakPoint = counter + this.props.slidesToScroll;
counter +=
this.props.slidesToScroll <= this.props.slidesToShow
? this.props.slidesToScroll
: this.props.slidesToShow;
}
return indexes;
},
checkNavigable: function (index) {
var navigables = this.getNavigableIndexes();
var prevNavigable = 0;
if (index > navigables[navigables.length - 1]) {
index = navigables[navigables.length - 1];
}
else {
for (var n in navigables) {
if (index < navigables[n]) {
index = prevNavigable;
break;
}
prevNavigable = navigables[n];
}
}
return index;
},
getSlideCount: function () {
var _this = this;
var centerOffset = this.props.centerMode
? this.state.slideWidth * Math.floor(this.props.slidesToShow / 2)
: 0;
if (this.props.swipeToSlide) {
var swipedSlide_1;
var slickList = (0, react_dom_1.findDOMNode)(this.list);
var slides = slickList.querySelectorAll("".concat(this.props.prefix, "slick-slide"));
Array.from(slides).every(function (slide) {
if (!_this.props.vertical) {
if (slide.offsetLeft - centerOffset + (_this.getWidth(slide) || 0) / 2 >
_this.state.swipeLeft * -1) {
swipedSlide_1 = slide;
return false;
}
}
else if (slide.offsetTop + (_this.getHeight(slide) || 0) / 2 >
_this.state.swipeLeft * -1) {
swipedSlide_1 = slide;
return false;
}
return true;
});
var slidesTraversed =
// @ts-expect-error 此处应被转换为 number 类型
Math.abs(swipedSlide_1.dataset.index - this.state.currentSlide) || 1;
return slidesTraversed;
}
else {
return this.props.slidesToScroll;
}
},
swipeEnd: function (e) {
if (!this.state.dragging) {
if (this.props.swipe) {
e.preventDefault();
}
return;
}
var touchObject = this.state.touchObject;
var minSwipe = this.state.listWidth / this.props.touchThreshold;
var swipeDirection = this.swipeDirection(touchObject);
if (this.props.verticalSwiping) {
minSwipe = this.state.listHeight / this.props.touchThreshold;
}
// reset the state of touch related state variables.
this.setState({
dragging: false,
edgeDragged: false,
swiped: false,
swipeLeft: null,
touchObject: {},
});
if (!touchObject.swipeLength) {
return;
}
if (touchObject.swipeLength > minSwipe) {
e.preventDefault();
var slideCount = void 0;
var newSlide = void 0;
switch (swipeDirection) {
case 'left':
case 'down':
newSlide = this.state.currentSlide + this.getSlideCount();
slideCount = this.props.swipeToSlide ? this.checkNavigable(newSlide) : newSlide;
this.setState({ currentDirection: 0 });
break;
case 'right':
case 'up':
newSlide = this.state.currentSlide - this.getSlideCount();
slideCount = this.props.swipeToSlide ? this.checkNavigable(newSlide) : newSlide;
this.setState({ currentDirection: 1 });
break;
default:
slideCount = this.state.currentSlide;
}
this.slideHandler(slideCount);
}
else {
// Adjust the track back to it's original position.
var currentLeft = (0, trackHelper_1.getTrackLeft)(tslib_1.__assign(tslib_1.__assign({ slideIndex: this.state.currentSlide, trackRef: this.track }, this.props), this.state));
this.setState({
trackStyle: (0, trackHelper_1.getTrackAnimateCSS)(tslib_1.__assign(tslib_1.__assign({ left: currentLeft }, this.props), this.state)),
});
}
},
onInnerSliderEnter: function () {
if (this.props.autoplay && this.props.pauseOnHover) {
this.pause();
}
},
onInnerSliderLeave: function () {
if (this.props.autoplay && this.props.pauseOnHover) {
this.autoPlay();
}
},
};
exports.default = EventHandlers;