angular-responsive-carousel
Version:
Carousel for Angular. A simple solution for horizontal scrolling images with lazy loading.
397 lines • 52.2 kB
JavaScript
export class Slide {
constructor(carouselProperties, utils, cells, container) {
this.carouselProperties = carouselProperties;
this.utils = utils;
this.cells = cells;
this.container = container;
this.slideLength = 0;
this.isSlideInProgress = false;
this.counter = 0;
this._counter = 0;
this.distance = 0;
this.distanceAbs = 0;
this.isNotClickOnArrow = false;
this.initialPositionX = 0;
this.currentPositionX = 0;
/* The slide length has been limited by the limitSlideLength() method */
this.isSlideLengthLimited = false;
this.init();
}
get fullCellWidth() {
return this.carouselProperties.cellWidth + this.carouselProperties.margin;
}
get margin() {
return this.carouselProperties.margin;
}
get minSwipeDistance() {
return this.carouselProperties.minSwipeDistance;
}
get numberOfVisibleCells() {
return this.utils.numberOfVisibleCells;
}
get visibleCellsOverflowContainer() {
return this.utils.visibleCellsOverflowContainer;
}
/* The position to which the container returns after each slide
* in the light DUM tree mode.
*/
get fixedContainerPosition() {
return -(this.overflowCellsLimit * this.fullCellWidth);
}
get overflowCellsLimit() {
return this.utils.overflowCellsLimit;
}
get images() {
return this.carouselProperties.images;
}
/* Number of cell elements in the DUM tree */
get cellLength() {
if (this.isLightDOM) {
return this.cells.cellLengthInLightDOMMode;
}
else {
if (this.images) {
return this.images.length;
}
else {
return this.cells.cellLength;
}
}
}
get isLightDOM() {
return this.carouselProperties.lightDOM || this.carouselProperties.loop;
}
updateProperties(carouselProperties) {
this.carouselProperties = carouselProperties;
this.setVisibleWidth();
}
init() {
this.visibleWidth = this.carouselProperties.visibleWidth || this.carouselProperties.hostElement.clientWidth;
}
handleTouchstart() {
/* Touchstart event is not called for arrow */
this.isNotClickOnArrow = true;
this.isSlideLengthLimited = false;
if (!this.isSlideInProgress) {
this.initialPositionX = this.container.getCurrentPositionX();
}
}
handleTouchend() {
if (!this.isNotClickOnArrow) {
return;
}
this.currentPositionX = this.container.getCurrentPositionX();
this.distanceAbs = Math.abs(this.initialPositionX - this.currentPositionX);
this.distance = this.initialPositionX - this.currentPositionX;
this.direction = this.getDirection();
this.isNotClickOnArrow = false;
this.handleSlide();
}
handleTransitionend() {
this.setCounter();
this.isSlideInProgress = false;
if (this.isLightDOM) {
this.alignContainerFast();
}
}
handleSlide(customSlideLength = undefined) {
let isUsingButton = customSlideLength;
let newPositionX;
if (isUsingButton && this.isSlideInProgress || !this.direction) {
return;
}
/* Custom slide length is used in arrows */
if (customSlideLength) {
this.slideLength = this.limitSlideLength(customSlideLength);
if (!this.isSlideInProgress) {
this.initialPositionX = this.container.getCurrentPositionX();
}
}
else {
this.slideLength = this.getSlideLength(this.distanceAbs);
}
/* Store intermediate counter value */
this._counter = this.getPreliminaryCounter();
if (this.direction === 'left') {
if (!customSlideLength) {
this.slideLength = this.limitSlideLength(this.getSlideLength(this.distanceAbs));
}
this._counter = this.getPreliminaryCounter();
let isSlidesEnd = this.isSlidesEnd(this._counter);
newPositionX = this.getPositionByIndex(this._counter);
if (isSlidesEnd) {
this._counter = this.counter;
newPositionX = this.getPositionByIndex(this.counter);
this.slideLength = 0;
}
}
if (this.direction === 'right') {
if (!customSlideLength) {
this.slideLength = this.getSlideLength(this.distanceAbs);
}
if (this._counter < 0) {
this._counter = this.counter;
this.slideLength = this.counter;
}
newPositionX = this.getPositionByIndex(this.counter - this.slideLength);
}
if (this.container.getCurrentPositionX() !== newPositionX) {
this.isSlideInProgress = true;
this.container.transformPositionX(newPositionX);
}
}
next(length = 1) {
this.direction = 'left';
this.handleSlide(length);
}
prev(length = 1) {
this.direction = 'right';
this.handleSlide(length);
}
select(index) {
if (index > this.cellLength - 1) {
return;
}
if (index > this.counter) {
let length = index - this.counter;
this.next(length);
}
if (index < this.counter) {
let length = this.counter - index;
this.prev(length);
}
}
getPreliminaryCounter() {
if (this.direction === 'left') {
return this.counter + this.slideLength;
}
if (this.direction === 'right') {
return this.counter - this.slideLength;
}
return 0;
}
/*
* Limits the length of the slide during calls to the next() and prev()
* methods if the specified position is outside the cell length
*/
limitSlideLength(slideLength) {
if (slideLength > 1) {
for (var i = 0; i < slideLength; i++) {
let newCounter = this.counter + (slideLength - i);
if (!this.isSlidesEnd(newCounter)) {
slideLength = slideLength - i;
this.isSlideLengthLimited = i > 0;
break;
}
}
}
return slideLength;
}
/* Offset the container to show the last cell completely */
getPositionCorrection(counter) {
let correction = 0;
let isLastSlide = this.isLastSlide(counter);
if (this.carouselProperties.loop || this.direction === "right") {
return 0;
}
if (this.isSlideLengthLimited || isLastSlide) {
let cellsWidth = this.cells.cellLengthInLightDOMMode * this.fullCellWidth;
if (this.visibleWidth < cellsWidth) {
correction = -(this.numberOfVisibleCells * this.fullCellWidth - this.visibleWidth - this.margin);
}
if (correction >= -this.margin) {
correction = 0;
}
}
return correction;
}
getSlideLength(distanceAbs) {
let isLastSlide = this.isLastSlide(this.counter);
/* If the last cell does not fit entirely, then the
* length of the swipe to the left, from the extreme
* right position, may be shorter than usual.
*/
if (isLastSlide && this.direction === "right") {
distanceAbs = distanceAbs + this.visibleWidth % this.fullCellWidth;
}
let length = Math.floor(distanceAbs / this.fullCellWidth);
if (distanceAbs % this.fullCellWidth >= this.minSwipeDistance) {
length++;
}
return length;
}
getDistanceAbs() {
return Math.abs(this.initialPositionX - this.currentPositionX);
}
getDirection() {
const direction = Math.sign(this.initialPositionX - this.currentPositionX);
if (direction === -1) {
return 'right';
}
if (direction === 1) {
return 'left';
}
return undefined;
}
isSlidesEnd(counter) {
let margin = this.visibleCellsOverflowContainer ? 1 : 0;
let imageLength = this.images ? this.images.length : this.cells.cellLength;
if (this.carouselProperties.loop) {
return false;
}
else {
return (imageLength - counter + margin) < this.numberOfVisibleCells;
}
}
isLastSlide(counter) {
return this.isSlidesEnd(counter + 1);
}
setCounter() {
if (this.direction === 'left') {
this.counter = this.counter + this.slideLength;
}
if (this.direction === 'right') {
this.counter = this.counter - this.slideLength;
}
}
getPositionByIndex(_counter) {
let correction = this.getPositionCorrection(this.counter + this.slideLength);
let position;
if (correction !== 0) {
correction = correction + this.fullCellWidth;
}
if (this.direction === 'right') {
correction = 0;
}
if (this.isLightDOM && this.isLightDOMMode(_counter) ||
this.isLightDOM && this.ifLeftDOMModeAtEnd(_counter)) {
let initialPosition = this.getPositionWithoutCorrection(this.initialPositionX);
let counterDifference = _counter - this.counter;
position = initialPosition - ((counterDifference * this.fullCellWidth) - correction);
}
else {
position = -((_counter * this.fullCellWidth) - correction);
}
position = this.provideSafePosition(position);
return position;
}
provideSafePosition(position) {
const endPosition = this.container.getEndPosition();
if (this.direction === 'left') {
if (position > 0) {
position = 0;
}
}
if (this.direction === 'right') {
if (position < endPosition) {
position = endPosition;
}
}
return position;
}
getPositionWithoutCorrection(value) {
let remainder = Math.round(value) % this.fullCellWidth;
if (remainder !== 0) {
return value - (this.fullCellWidth + remainder);
}
else {
return value;
}
}
isNextArrowDisabled() {
return this.isLastSlide(this.counter) ||
(!this.visibleCellsOverflowContainer && this.cellLength <= this.numberOfVisibleCells) ||
(this.visibleCellsOverflowContainer && this.cellLength < this.numberOfVisibleCells);
}
isPrevArrowDisabled() {
return this.counter === 0;
}
alignContainerFast() {
if (this.isLightDOMMode(this.counter)) {
let positionX = this.fixedContainerPosition;
this.container.transformPositionX(positionX, 0);
this.cells.setCounter(this.counter);
this.cells.lineUp();
}
else if (this.ifLeftDOMModeToBeginning(this.counter)) {
/* If we have already exited the light DOM mode but
* the cells are still out of place
*/
if (this.cells.ifSequenceOfCellsIsChanged()) {
let positionX = -(this.counter * this.fullCellWidth);
this.container.transformPositionX(positionX, 0);
this.cells.setCounter(this.counter);
this.cells.lineUp();
}
}
else if (this.ifLeftDOMModeAtEnd(this.counter)) {
let containerPositionX = this.container.getCurrentPositionX();
let containerWidth = this.container.getWidth();
this.visibleWidth;
if (this.isLastSlide(this.counter) &&
containerWidth + containerPositionX >= this.visibleWidth) {
return;
}
let correction = this.getPositionCorrection(this.counter);
if (correction !== 0) {
correction = correction + this.fullCellWidth;
}
if (this.direction === 'right') {
correction = 0;
}
let positionX = this.fixedContainerPosition + correction;
this.container.transformPositionX(positionX, 0);
this.cells.setCounter(this.counter);
this.cells.lineUp();
}
}
isLightDOMMode(counter) {
let flag;
let remainderOfCells = this.images.length - this.overflowCellsLimit - this.numberOfVisibleCells;
if (!this.isLightDOM) {
return false;
}
if (counter > this.overflowCellsLimit && this.direction === "left" &&
counter <= remainderOfCells) {
flag = true;
}
if (counter >= this.overflowCellsLimit && this.direction === "right" &&
counter < remainderOfCells) {
flag = true;
}
if (this.counter > this.overflowCellsLimit && this.direction === "left" &&
this.counter <= remainderOfCells) {
flag = true;
}
if (this.counter >= this.overflowCellsLimit && this.direction === "right" &&
this.counter < remainderOfCells) {
flag = true;
}
return flag;
}
ifLeftDOMModeAtEnd(counter) {
let flag;
let remainderOfCells = this.images.length - this.overflowCellsLimit - this.numberOfVisibleCells;
if (counter >= remainderOfCells) {
flag = true;
}
if (this.counter >= remainderOfCells) {
flag = true;
}
return flag;
}
ifLeftDOMModeToBeginning(counter) {
let flag;
if (counter <= this.overflowCellsLimit) {
flag = true;
}
if (this.counter <= this.overflowCellsLimit) {
flag = true;
}
return flag;
}
setVisibleWidth() {
this.visibleWidth = this.carouselProperties.visibleWidth || this.carouselProperties.hostElement.clientWidth;
}
}
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{Properties as CarouselProperties} from './interfaces';\r\n\r\nexport interface Properties {\r\n    carouselProperties: CarouselProperties;\r\n}\r\n\r\nexport class Slide {\r\n    slideLength: number = 0;\r\n    isSlideInProgress: boolean = false;\r\n    direction: 'left' | 'right' | undefined;\r\n    counter: number = 0;\r\n    _counter: number = 0;\r\n    distance: number = 0;\r\n    distanceAbs: number = 0;\r\n    visibleWidth!: number;\r\n    isNotClickOnArrow: boolean = false;\r\n    initialPositionX: number = 0;\r\n    currentPositionX: number = 0;\r\n\r\n    /* The slide length has been limited by the limitSlideLength() method */\r\n    isSlideLengthLimited: boolean = false;\r\n\r\n    get fullCellWidth() {\r\n        return this.carouselProperties.cellWidth + this.carouselProperties.margin;\r\n    }\r\n\r\n    get margin() {\r\n        return this.carouselProperties.margin;\r\n    }\r\n\r\n    get minSwipeDistance() {\r\n        return this.carouselProperties.minSwipeDistance;\r\n    }\r\n\r\n    get numberOfVisibleCells() {\r\n        return this.utils.numberOfVisibleCells;\r\n    }\r\n\r\n    get visibleCellsOverflowContainer() {\r\n        return this.utils.visibleCellsOverflowContainer;\r\n    }\r\n\r\n    /* The position to which the container returns after each slide \r\n     * in the light DUM tree mode. \r\n     */\r\n    get fixedContainerPosition() {\r\n        return -(this.overflowCellsLimit * this.fullCellWidth);\r\n    }\r\n\r\n    get overflowCellsLimit() {\r\n        return this.utils.overflowCellsLimit;\r\n    }\r\n\r\n    get images() {\r\n        return this.carouselProperties.images;\r\n    }\r\n\r\n    /* Number of cell elements in the DUM tree */\r\n    get cellLength() {\r\n        if (this.isLightDOM) {\r\n            return this.cells.cellLengthInLightDOMMode;\r\n        } else {\r\n            if (this.images) {\r\n                return this.images.length;\r\n            } else {\r\n                return this.cells.cellLength;\r\n            }\r\n        }\r\n    }\r\n\r\n    get isLightDOM() {\r\n        return this.carouselProperties.lightDOM || this.carouselProperties.loop;\r\n    }\r\n\r\n    constructor(private carouselProperties: CarouselProperties,\r\n        private utils: any,\r\n        private cells: any,\r\n        private container: any) {\r\n\r\n        this.init();\r\n    }\r\n\r\n    updateProperties(carouselProperties: CarouselProperties) {\r\n        this.carouselProperties = carouselProperties;\r\n        this.setVisibleWidth();\r\n    }\r\n\r\n    init() {\r\n        this.visibleWidth = this.carouselProperties.visibleWidth || this.carouselProperties.hostElement.clientWidth;\r\n    }\r\n\r\n    handleTouchstart() {\r\n        /* Touchstart event is not called for arrow */\r\n        this.isNotClickOnArrow = true;\r\n        this.isSlideLengthLimited = false;\r\n\r\n        if (!this.isSlideInProgress) {\r\n            this.initialPositionX = this.container.getCurrentPositionX();\r\n        }\r\n    }\r\n\r\n    handleTouchend() {\r\n        if (!this.isNotClickOnArrow) {\r\n            return;\r\n        }\r\n        this.currentPositionX = this.container.getCurrentPositionX();\r\n        this.distanceAbs = Math.abs(this.initialPositionX - this.currentPositionX);\r\n        this.distance = this.initialPositionX - this.currentPositionX;\r\n        this.direction = this.getDirection();\r\n        this.isNotClickOnArrow = false;\r\n        this.handleSlide();\r\n    }\r\n\r\n    handleTransitionend() {\r\n        this.setCounter();\r\n        this.isSlideInProgress = false;\r\n\r\n        if (this.isLightDOM) {\r\n            this.alignContainerFast();\r\n        }\r\n    }\r\n\r\n    handleSlide(customSlideLength: number | undefined = undefined) {\r\n        let isUsingButton = customSlideLength;\r\n        let newPositionX;\r\n\r\n        if (isUsingButton && this.isSlideInProgress || !this.direction) {\r\n            return;\r\n        }\r\n\r\n        /* Custom slide length is used in arrows */\r\n        if (customSlideLength) {\r\n            this.slideLength = this.limitSlideLength(customSlideLength);\r\n\r\n            if (!this.isSlideInProgress) {\r\n                this.initialPositionX = this.container.getCurrentPositionX();\r\n            }\r\n        } else {\r\n            this.slideLength = this.getSlideLength(this.distanceAbs);\r\n        }\r\n\r\n        /* Store intermediate counter value */\r\n        this._counter = this.getPreliminaryCounter();\r\n\r\n        if (this.direction === 'left') {\r\n            if (!customSlideLength) {\r\n                this.slideLength = this.limitSlideLength(this.getSlideLength(this.distanceAbs));\r\n            }\r\n\r\n            this._counter = this.getPreliminaryCounter();\r\n            let isSlidesEnd = this.isSlidesEnd(this._counter);\r\n            newPositionX = this.getPositionByIndex(this._counter);\r\n\r\n            if (isSlidesEnd) {\r\n                this._counter = this.counter;\r\n\r\n                newPositionX = this.getPositionByIndex(this.counter);\r\n                this.slideLength = 0;\r\n            }\r\n        }\r\n\r\n        if (this.direction === 'right') {\r\n            if (!customSlideLength) {\r\n                this.slideLength = this.getSlideLength(this.distanceAbs);\r\n            }\r\n\r\n            if (this._counter < 0) {\r\n                this._counter = this.counter;\r\n                this.slideLength = this.counter;\r\n            }\r\n\r\n            newPositionX = this.getPositionByIndex(this.counter - this.slideLength);\r\n        }\r\n\r\n        if (this.container.getCurrentPositionX() !== newPositionX) {\r\n            this.isSlideInProgress = true;\r\n            this.container.transformPositionX(newPositionX);\r\n        }\r\n    }\r\n\r\n    next(length: number = 1) {\r\n        this.direction = 'left';\r\n        this.handleSlide(length);\r\n    }\r\n\r\n    prev(length: number = 1) {\r\n        this.direction = 'right';\r\n        this.handleSlide(length);\r\n    }\r\n\r\n    select(index: number) {\r\n        if (index > this.cellLength - 1) {\r\n            return;\r\n        }\r\n\r\n        if (index > this.counter) {\r\n            let length = index - this.counter;\r\n            this.next(length);\r\n        }\r\n\r\n        if (index < this.counter) {\r\n            let length = this.counter - index;\r\n            this.prev(length);\r\n        }\r\n    }\r\n\r\n    getPreliminaryCounter() {\r\n        if (this.direction === 'left') {\r\n            return this.counter + this.slideLength;\r\n        }\r\n\r\n        if (this.direction === 'right') {\r\n            return this.counter - this.slideLength;\r\n        }\r\n\r\n        return 0;\r\n    }\r\n\r\n    /*  \r\n     * Limits the length of the slide during calls to the next() and prev() \r\n     * methods if the specified position is outside the cell length \r\n     */\r\n    limitSlideLength(slideLength: number) {\r\n        if (slideLength > 1) {\r\n            for (var i = 0; i < slideLength; i++) {\r\n                let newCounter = this.counter + (slideLength - i);\r\n\r\n                if (!this.isSlidesEnd(newCounter)) {\r\n                    slideLength = slideLength - i;\r\n                    this.isSlideLengthLimited = i > 0;\r\n                    break;\r\n                }\r\n            }\r\n        }\r\n        return slideLength;\r\n    }\r\n\r\n    /* Offset the container to show the last cell completely */\r\n    getPositionCorrection(counter:number) {\r\n        let correction = 0;\r\n        let isLastSlide = this.isLastSlide(counter);\r\n\r\n        if (this.carouselProperties.loop || this.direction === \"right\") {\r\n            return 0;\r\n        }\r\n\r\n        if (this.isSlideLengthLimited || isLastSlide) {\r\n            let cellsWidth = this.cells.cellLengthInLightDOMMode * this.fullCellWidth;\r\n\r\n            if (this.visibleWidth < cellsWidth) {\r\n                correction = -(this.numberOfVisibleCells * this.fullCellWidth - this.visibleWidth - this.margin);\r\n            }\r\n\r\n            if (correction >= -this.margin) {\r\n                correction = 0;\r\n            }\r\n        }\r\n\r\n        return correction;\r\n    }\r\n\r\n    getSlideLength(distanceAbs: number) {\r\n        let isLastSlide = this.isLastSlide(this.counter);\r\n\r\n        /* If the last cell does not fit entirely, then the \r\n         * length of the swipe to the left, from the extreme \r\n         * right position, may be shorter than usual. \r\n         */\r\n        if (isLastSlide && this.direction === \"right\") {\r\n            distanceAbs = distanceAbs + this.visibleWidth % this.fullCellWidth;\r\n        }\r\n\r\n        let length = Math.floor(distanceAbs / this.fullCellWidth);\r\n\r\n        if (distanceAbs % this.fullCellWidth >= this.minSwipeDistance) {\r\n            length++;\r\n        }\r\n\r\n        return length;\r\n    }\r\n\r\n    getDistanceAbs() {\r\n        return Math.abs(this.initialPositionX - this.currentPositionX);\r\n    }\r\n\r\n    getDirection() {\r\n        const direction = Math.sign(this.initialPositionX - this.currentPositionX);\r\n\r\n        if (direction === -1) {\r\n            return 'right';\r\n        }\r\n        if (direction === 1) {\r\n            return 'left';\r\n        }\r\n\r\n        return undefined;\r\n    }\r\n\r\n    isSlidesEnd(counter: number) {\r\n        let margin = this.visibleCellsOverflowContainer ? 1 : 0;\r\n        let imageLength = this.images ? this.images.length : this.cells.cellLength;\r\n\r\n        if (this.carouselProperties.loop) {\r\n            return false;\r\n        } else {\r\n            return (imageLength - counter + margin) < this.numberOfVisibleCells;\r\n        }\r\n    }\r\n\r\n    isLastSlide(counter: number) {\r\n        return this.isSlidesEnd(counter + 1)\r\n    }\r\n\r\n    setCounter() {\r\n        if (this.direction === 'left') {\r\n            this.counter = this.counter + this.slideLength;\r\n        }\r\n\r\n        if (this.direction === 'right') {\r\n            this.counter = this.counter - this.slideLength;\r\n        }\r\n    }\r\n\r\n    getPositionByIndex(_counter: number) {\r\n        let correction = this.getPositionCorrection(this.counter + this.slideLength);\r\n        let position;\r\n\r\n        if (correction !== 0) {\r\n            correction = correction + this.fullCellWidth\r\n        }\r\n\r\n        if (this.direction === 'right') {\r\n            correction = 0;\r\n        }\r\n\r\n        if (this.isLightDOM && this.isLightDOMMode(_counter) ||\r\n            this.isLightDOM && this.ifLeftDOMModeAtEnd(_counter)) {\r\n\r\n            let initialPosition = this.getPositionWithoutCorrection(this.initialPositionX);\r\n            let counterDifference = _counter - this.counter;\r\n            position = initialPosition - ((counterDifference * this.fullCellWidth) - correction);\r\n        } else {\r\n            position = -((_counter * this.fullCellWidth) - correction);\r\n        }\r\n\r\n        position = this.provideSafePosition(position);\r\n\r\n        return position;\r\n    }\r\n\r\n    provideSafePosition(position: number) {\r\n        const endPosition = this.container.getEndPosition();\r\n\r\n        if (this.direction === 'left') {\r\n            if (position > 0) {\r\n                position = 0;\r\n            }\r\n        }\r\n\r\n        if (this.direction === 'right') {\r\n            if (position < endPosition) {\r\n                position = endPosition;\r\n            }\r\n        }\r\n\r\n        return position;\r\n    }\r\n\r\n    getPositionWithoutCorrection(value: number) {\r\n        let remainder = Math.round(value) % this.fullCellWidth;\r\n\r\n        if (remainder !== 0) {\r\n            return value - (this.fullCellWidth + remainder);\r\n        } else {\r\n            return value;\r\n        }\r\n    }\r\n\r\n    isNextArrowDisabled() {\r\n        return this.isLastSlide(this.counter) || \r\n        (!this.visibleCellsOverflowContainer && this.cellLength <= this.numberOfVisibleCells) ||\r\n        (this.visibleCellsOverflowContainer && this.cellLength < this.numberOfVisibleCells)\r\n    }\r\n\r\n    isPrevArrowDisabled() {\r\n        return this.counter === 0;\r\n    }\r\n\r\n    alignContainerFast() {\r\n        if (this.isLightDOMMode(this.counter)) {\r\n            let positionX = this.fixedContainerPosition;\r\n            this.container.transformPositionX(positionX, 0);\r\n\r\n            this.cells.setCounter(this.counter);\r\n            this.cells.lineUp();\r\n        } else if (this.ifLeftDOMModeToBeginning(this.counter)) {\r\n            /* If we have already exited the light DOM mode but \r\n             * the cells are still out of place \r\n             */\r\n            if (this.cells.ifSequenceOfCellsIsChanged()) {\r\n                let positionX = -(this.counter * this.fullCellWidth);\r\n                this.container.transformPositionX(positionX, 0);\r\n\r\n                this.cells.setCounter(this.counter);\r\n                this.cells.lineUp();\r\n            }\r\n        } else if (this.ifLeftDOMModeAtEnd(this.counter)) {\r\n            let containerPositionX = this.container.getCurrentPositionX();\r\n            let containerWidth = this.container.getWidth();\r\n            this.visibleWidth;\r\n\r\n            if (this.isLastSlide(this.counter) &&\r\n                containerWidth + containerPositionX >= this.visibleWidth) {\r\n                return;\r\n            }\r\n\r\n            let correction = this.getPositionCorrection(this.counter);\r\n\r\n            if (correction !== 0) {\r\n                correction = correction + this.fullCellWidth\r\n            }\r\n\r\n            if (this.direction === 'right') {\r\n                correction = 0;\r\n            }\r\n\r\n            let positionX = this.fixedContainerPosition + correction;\r\n\r\n            this.container.transformPositionX(positionX, 0);\r\n            this.cells.setCounter(this.counter);\r\n            this.cells.lineUp();\r\n        }\r\n    }\r\n\r\n    isLightDOMMode(counter: number) {\r\n        let flag;\r\n        let remainderOfCells = this.images.length - this.overflowCellsLimit - this.numberOfVisibleCells;\r\n\r\n        if (!this.isLightDOM) {\r\n            return false;\r\n        }\r\n\r\n