ngx-bootstrap
Version:
Native Angular Bootstrap Components
372 lines (371 loc) • 31.8 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes} checked by tsc
*/
// tslint:disable:max-file-line-count
/***
* pause (not yet supported) (?string='hover') - event group name which pauses
* the cycling of the carousel, if hover pauses on mouseenter and resumes on
* mouseleave keyboard (not yet supported) (?boolean=true) - if false
* carousel will not react to keyboard events
* note: swiping not yet supported
*/
/****
* Problems:
* 1) if we set an active slide via model changes, .active class remains on a
* current slide.
* 2) if we have only one slide, we shouldn't show prev/next nav buttons
* 3) if first or last slide is active and noWrap is true, there should be
* "disabled" class on the nav buttons.
* 4) default interval should be equal 5000
*/
import { Component, EventEmitter, Input, NgZone, Output } from '@angular/core';
import { isBs3, LinkedList } from 'ngx-bootstrap/utils';
import { CarouselConfig } from './carousel.config';
/** @enum {number} */
const Direction = {
UNKNOWN: 0,
NEXT: 1,
PREV: 2,
};
export { Direction };
Direction[Direction.UNKNOWN] = "UNKNOWN";
Direction[Direction.NEXT] = "NEXT";
Direction[Direction.PREV] = "PREV";
/**
* Base element to create carousel
*/
export class CarouselComponent {
/**
* @param {?} config
* @param {?} ngZone
*/
constructor(config, ngZone) {
this.ngZone = ngZone;
/**
* Will be emitted when active slide has been changed. Part of two-way-bindable [(activeSlide)] property
*/
this.activeSlideChange = new EventEmitter(false);
this._slides = new LinkedList();
this.destroyed = false;
Object.assign(this, config);
}
/**
* Index of currently displayed slide(started for 0)
* @param {?} index
* @return {?}
*/
set activeSlide(index) {
if (this._slides.length && index !== this._currentActiveSlide) {
this._select(index);
}
}
/**
* @return {?}
*/
get activeSlide() {
return this._currentActiveSlide;
}
/**
* Delay of item cycling in milliseconds. If false, carousel won't cycle
* automatically.
* @return {?}
*/
get interval() {
return this._interval;
}
/**
* @param {?} value
* @return {?}
*/
set interval(value) {
this._interval = value;
this.restartTimer();
}
/**
* @return {?}
*/
get slides() {
return this._slides.toArray();
}
/**
* @return {?}
*/
get isBs4() {
return !isBs3();
}
/**
* @return {?}
*/
ngOnDestroy() {
this.destroyed = true;
}
/**
* Adds new slide. If this slide is first in collection - set it as active
* and starts auto changing
* @param {?} slide
* @return {?}
*/
addSlide(slide) {
this._slides.add(slide);
if (this._slides.length === 1) {
this._currentActiveSlide = void 0;
this.activeSlide = 0;
this.play();
}
}
/**
* Removes specified slide. If this slide is active - will roll to another
* slide
* @param {?} slide
* @return {?}
*/
removeSlide(slide) {
const /** @type {?} */ remIndex = this._slides.indexOf(slide);
if (this._currentActiveSlide === remIndex) {
// removing of active slide
let /** @type {?} */ nextSlideIndex = void 0;
if (this._slides.length > 1) {
// if this slide last - will roll to first slide, if noWrap flag is
// FALSE or to previous, if noWrap is TRUE in case, if this slide in
// middle of collection, index of next slide is same to removed
nextSlideIndex = !this.isLast(remIndex)
? remIndex
: this.noWrap ? remIndex - 1 : 0;
}
this._slides.remove(remIndex);
// prevents exception with changing some value after checking
setTimeout(() => {
this._select(nextSlideIndex);
}, 0);
}
else {
this._slides.remove(remIndex);
const /** @type {?} */ currentSlideIndex = this.getCurrentSlideIndex();
setTimeout(() => {
// after removing, need to actualize index of current active slide
this._currentActiveSlide = currentSlideIndex;
this.activeSlideChange.emit(this._currentActiveSlide);
}, 0);
}
}
/**
* Rolling to next slide
* @param {?=} force
* @return {?}
*/
nextSlide(force = false) {
this.activeSlide = this.findNextSlideIndex(Direction.NEXT, force);
}
/**
* Rolling to previous slide
* @param {?=} force
* @return {?}
*/
previousSlide(force = false) {
this.activeSlide = this.findNextSlideIndex(Direction.PREV, force);
}
/**
* Rolling to specified slide
* @param {?} index
* @return {?}
*/
selectSlide(index) {
this.activeSlide = index;
}
/**
* Starts a auto changing of slides
* @return {?}
*/
play() {
if (!this.isPlaying) {
this.isPlaying = true;
this.restartTimer();
}
}
/**
* Stops a auto changing of slides
* @return {?}
*/
pause() {
if (!this.noPause) {
this.isPlaying = false;
this.resetTimer();
}
}
/**
* Finds and returns index of currently displayed slide
* @return {?}
*/
getCurrentSlideIndex() {
return this._slides.findIndex((slide) => slide.active);
}
/**
* Defines, whether the specified index is last in collection
* @param {?} index
* @return {?}
*/
isLast(index) {
return index + 1 >= this._slides.length;
}
/**
* Defines next slide index, depending of direction
* @param {?} direction
* @param {?} force
* @return {?}
*/
findNextSlideIndex(direction, force) {
let /** @type {?} */ nextSlideIndex = 0;
if (!force &&
(this.isLast(this.activeSlide) &&
direction !== Direction.PREV &&
this.noWrap)) {
return void 0;
}
switch (direction) {
case Direction.NEXT:
// if this is last slide, not force, looping is disabled
// and need to going forward - select current slide, as a next
nextSlideIndex = !this.isLast(this._currentActiveSlide)
? this._currentActiveSlide + 1
: !force && this.noWrap ? this._currentActiveSlide : 0;
break;
case Direction.PREV:
// if this is first slide, not force, looping is disabled
// and need to going backward - select current slide, as a next
nextSlideIndex =
this._currentActiveSlide > 0
? this._currentActiveSlide - 1
: !force && this.noWrap
? this._currentActiveSlide
: this._slides.length - 1;
break;
default:
throw new Error('Unknown direction');
}
return nextSlideIndex;
}
/**
* Sets a slide, which specified through index, as active
* @param {?} index
* @return {?}
*/
_select(index) {
if (isNaN(index)) {
this.pause();
return;
}
const /** @type {?} */ currentSlide = this._slides.get(this._currentActiveSlide);
if (currentSlide) {
currentSlide.active = false;
}
const /** @type {?} */ nextSlide = this._slides.get(index);
if (nextSlide) {
this._currentActiveSlide = index;
nextSlide.active = true;
this.activeSlide = index;
this.activeSlideChange.emit(index);
}
}
/**
* Starts loop of auto changing of slides
* @return {?}
*/
restartTimer() {
this.resetTimer();
const /** @type {?} */ interval = +this.interval;
if (!isNaN(interval) && interval > 0) {
this.currentInterval = this.ngZone.runOutsideAngular(() => {
return setInterval(() => {
const /** @type {?} */ nInterval = +this.interval;
this.ngZone.run(() => {
if (this.isPlaying &&
!isNaN(this.interval) &&
nInterval > 0 &&
this.slides.length) {
this.nextSlide();
}
else {
this.pause();
}
});
}, interval);
});
}
}
/**
* Stops loop of auto changing of slides
* @return {?}
*/
resetTimer() {
if (this.currentInterval) {
clearInterval(this.currentInterval);
this.currentInterval = void 0;
}
}
}
CarouselComponent.decorators = [
{ type: Component, args: [{
selector: 'carousel',
template: "<div (mouseenter)=\"pause()\" (mouseleave)=\"play()\" (mouseup)=\"play()\" class=\"carousel slide\">\n <ol class=\"carousel-indicators\" *ngIf=\"showIndicators && slides.length > 1\">\n <li *ngFor=\"let slidez of slides; let i = index;\" [class.active]=\"slidez.active === true\" (click)=\"selectSlide(i)\"></li>\n </ol>\n <div class=\"carousel-inner\"><ng-content></ng-content></div>\n <a class=\"left carousel-control carousel-control-prev\" [class.disabled]=\"activeSlide === 0 && noWrap\" (click)=\"previousSlide()\" *ngIf=\"slides.length > 1\">\n <span class=\"icon-prev carousel-control-prev-icon\" aria-hidden=\"true\"></span>\n <span *ngIf=\"isBs4\" class=\"sr-only\">Previous</span>\n </a>\n <a class=\"right carousel-control carousel-control-next\" (click)=\"nextSlide()\" [class.disabled]=\"isLast(activeSlide) && noWrap\" *ngIf=\"slides.length > 1\">\n <span class=\"icon-next carousel-control-next-icon\" aria-hidden=\"true\"></span>\n <span class=\"sr-only\">Next</span>\n </a>\n</div>\n"
}] }
];
/** @nocollapse */
CarouselComponent.ctorParameters = () => [
{ type: CarouselConfig, },
{ type: NgZone, },
];
CarouselComponent.propDecorators = {
"noWrap": [{ type: Input },],
"noPause": [{ type: Input },],
"showIndicators": [{ type: Input },],
"activeSlideChange": [{ type: Output },],
"activeSlide": [{ type: Input },],
"interval": [{ type: Input },],
};
function CarouselComponent_tsickle_Closure_declarations() {
/** @type {!Array<{type: !Function, args: (undefined|!Array<?>)}>} */
CarouselComponent.decorators;
/**
* @nocollapse
* @type {function(): !Array<(null|{type: ?, decorators: (undefined|!Array<{type: !Function, args: (undefined|!Array<?>)}>)})>}
*/
CarouselComponent.ctorParameters;
/** @type {!Object<string,!Array<{type: !Function, args: (undefined|!Array<?>)}>>} */
CarouselComponent.propDecorators;
/**
* If `true` — carousel will not cycle continuously and will have hard stops (prevent looping)
* @type {?}
*/
CarouselComponent.prototype.noWrap;
/**
* If `true` — will disable pausing on carousel mouse hover
* @type {?}
*/
CarouselComponent.prototype.noPause;
/**
* If `true` — carousel-indicators are visible
* @type {?}
*/
CarouselComponent.prototype.showIndicators;
/**
* Will be emitted when active slide has been changed. Part of two-way-bindable [(activeSlide)] property
* @type {?}
*/
CarouselComponent.prototype.activeSlideChange;
/** @type {?} */
CarouselComponent.prototype.currentInterval;
/** @type {?} */
CarouselComponent.prototype._currentActiveSlide;
/** @type {?} */
CarouselComponent.prototype._interval;
/** @type {?} */
CarouselComponent.prototype._slides;
/** @type {?} */
CarouselComponent.prototype.isPlaying;
/** @type {?} */
CarouselComponent.prototype.destroyed;
/** @type {?} */
CarouselComponent.prototype.ngZone;
}
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tslint:disable:max-file-line-count\n/***\n * pause (not yet supported) (?string='hover') - event group name which pauses\n * the cycling of the carousel, if hover pauses on mouseenter and resumes on\n * mouseleave keyboard (not yet supported) (?boolean=true) - if false\n * carousel will not react to keyboard events\n * note: swiping not yet supported\n */\n/****\n * Problems:\n * 1) if we set an active slide via model changes, .active class remains on a\n * current slide.\n * 2) if we have only one slide, we shouldn't show prev/next nav buttons\n * 3) if first or last slide is active and noWrap is true, there should be\n * \"disabled\" class on the nav buttons.\n * 4) default interval should be equal 5000\n */\n\nimport {\n  Component, EventEmitter, Input, NgZone, OnDestroy, Output\n} from '@angular/core';\n\nimport { isBs3, LinkedList } from 'ngx-bootstrap/utils';\nimport { SlideComponent } from './slide.component';\nimport { CarouselConfig } from './carousel.config';\n\nexport enum Direction {\n  UNKNOWN,\n  NEXT,\n  PREV\n}\n\n/**\n * Base element to create carousel\n */\n@Component({\n  selector: 'carousel',\n  templateUrl: './carousel.component.html'\n})\nexport class CarouselComponent implements OnDestroy {\n  /** If `true` — carousel will not cycle continuously and will have hard stops (prevent looping) */\n  @Input() noWrap: boolean;\n  /**  If `true` — will disable pausing on carousel mouse hover */\n  @Input() noPause: boolean;\n  /**  If `true` — carousel-indicators are visible  */\n  @Input() showIndicators: boolean;\n\n  /** Will be emitted when active slide has been changed. Part of two-way-bindable [(activeSlide)] property */\n  @Output()\n  activeSlideChange: EventEmitter<number> = new EventEmitter<number>(false);\n\n  /** Index of currently displayed slide(started for 0) */\n  @Input()\n  set activeSlide(index: number) {\n    if (this._slides.length && index !== this._currentActiveSlide) {\n      this._select(index);\n    }\n  }\n\n  get activeSlide(): number {\n    return this._currentActiveSlide;\n  }\n\n  /**\n   * Delay of item cycling in milliseconds. If false, carousel won't cycle\n   * automatically.\n   */\n  @Input()\n  get interval(): number {\n    return this._interval;\n  }\n\n  set interval(value: number) {\n    this._interval = value;\n    this.restartTimer();\n  }\n\n  get slides(): SlideComponent[] {\n    return this._slides.toArray();\n  }\n\n  // tslint:disable-next-line:no-any\n  protected currentInterval: any;\n  protected _currentActiveSlide: number;\n  protected _interval: number;\n  protected _slides: LinkedList<SlideComponent> = new LinkedList<SlideComponent>();\n  protected isPlaying: boolean;\n  protected destroyed = false;\n\n  get isBs4(): boolean {\n    return !isBs3();\n  }\n\n  constructor(config: CarouselConfig, private ngZone: NgZone) {\n    Object.assign(this, config);\n  }\n\n  ngOnDestroy(): void {\n    this.destroyed = true;\n  }\n\n  /**\n   * Adds new slide. If this slide is first in collection - set it as active\n   * and starts auto changing\n   * @param slide\n   */\n  addSlide(slide: SlideComponent): void {\n    this._slides.add(slide);\n    if (this._slides.length === 1) {\n      this._currentActiveSlide = void 0;\n      this.activeSlide = 0;\n      this.play();\n    }\n  }\n\n  /**\n   * Removes specified slide. If this slide is active - will roll to another\n   * slide\n   * @param slide\n   */\n  removeSlide(slide: SlideComponent): void {\n    const remIndex = this._slides.indexOf(slide);\n\n    if (this._currentActiveSlide === remIndex) {\n      // removing of active slide\n      let nextSlideIndex: number = void 0;\n      if (this._slides.length > 1) {\n        // if this slide last - will roll to first slide, if noWrap flag is\n        // FALSE or to previous, if noWrap is TRUE in case, if this slide in\n        // middle of collection, index of next slide is same to removed\n        nextSlideIndex = !this.isLast(remIndex)\n          ? remIndex\n          : this.noWrap ? remIndex - 1 : 0;\n      }\n      this._slides.remove(remIndex);\n\n      // prevents exception with changing some value after checking\n      setTimeout(() => {\n        this._select(nextSlideIndex);\n      }, 0);\n    } else {\n      this._slides.remove(remIndex);\n      const currentSlideIndex = this.getCurrentSlideIndex();\n      setTimeout(() => {\n        // after removing, need to actualize index of current active slide\n        this._currentActiveSlide = currentSlideIndex;\n        this.activeSlideChange.emit(this._currentActiveSlide);\n      }, 0);\n    }\n  }\n\n  /**\n   * Rolling to next slide\n   * @param force: {boolean} if true - will ignore noWrap flag\n   */\n  nextSlide(force = false): void {\n    this.activeSlide = this.findNextSlideIndex(Direction.NEXT, force);\n  }\n\n  /**\n   * Rolling to previous slide\n   * @param force: {boolean} if true - will ignore noWrap flag\n   */\n  previousSlide(force = false): void {\n    this.activeSlide = this.findNextSlideIndex(Direction.PREV, force);\n  }\n\n  /**\n   * Rolling to specified slide\n   * @param index: {number} index of slide, which must be shown\n   */\n  selectSlide(index: number): void {\n    this.activeSlide = index;\n  }\n\n  /**\n   * Starts a auto changing of slides\n   */\n  play(): void {\n    if (!this.isPlaying) {\n      this.isPlaying = true;\n      this.restartTimer();\n    }\n  }\n\n  /**\n   * Stops a auto changing of slides\n   */\n  pause(): void {\n    if (!this.noPause) {\n      this.isPlaying = false;\n      this.resetTimer();\n    }\n  }\n\n  /**\n   * Finds and returns index of currently displayed slide\n   */\n  getCurrentSlideIndex(): number {\n    return this._slides.findIndex((slide: SlideComponent) => slide.active);\n  }\n\n  /**\n   * Defines, whether the specified index is last in collection\n   * @param index\n   */\n  isLast(index: number): boolean {\n    return index + 1 >= this._slides.length;\n  }\n\n  /**\n   * Defines next slide index, depending of direction\n   * @param direction: Direction(UNKNOWN|PREV|NEXT)\n   * @param force: {boolean} if TRUE - will ignore noWrap flag, else will\n   *   return undefined if next slide require wrapping\n   */\n  private findNextSlideIndex(direction: Direction, force: boolean): number {\n    let nextSlideIndex = 0;\n\n    if (\n      !force &&\n      (this.isLast(this.activeSlide) &&\n        direction !== Direction.PREV &&\n        this.noWrap)\n    ) {\n      return void 0;\n    }\n\n    switch (direction) {\n      case Direction.NEXT:\n        // if this is last slide, not force, looping is disabled\n        // and need to going forward - select current slide, as a next\n        nextSlideIndex = !this.isLast(this._currentActiveSlide)\n          ? this._currentActiveSlide + 1\n          : !force && this.noWrap ? this._currentActiveSlide : 0;\n        break;\n      case Direction.PREV:\n        // if this is first slide, not force, looping is disabled\n        // and need to going backward - select current slide, as a next\n        nextSlideIndex =\n          this._currentActiveSlide > 0\n            ? this._currentActiveSlide - 1\n            : !force && this.noWrap\n            ? this._currentActiveSlide\n            : this._slides.length - 1;\n        break;\n      default:\n        throw new Error('Unknown direction');\n    }\n\n    return nextSlideIndex;\n  }\n\n  /**\n   * Sets a slide, which specified through index, as active\n   * @param index\n   */\n  private _select(index: number): void {\n    if (isNaN(index)) {\n      this.pause();\n\n      return;\n    }\n    const currentSlide = this._slides.get(this._currentActiveSlide);\n    if (currentSlide) {\n      currentSlide.active = false;\n    }\n    const nextSlide = this._slides.get(index);\n    if (nextSlide) {\n      this._currentActiveSlide = index;\n      nextSlide.active = true;\n      this.activeSlide = index;\n      this.activeSlideChange.emit(index);\n    }\n  }\n\n  /**\n   * Starts loop of auto changing of slides\n   */\n  private restartTimer() {\n    this.resetTimer();\n    const interval = +this.interval;\n    if (!isNaN(interval) && interval > 0) {\n      this.currentInterval = this.ngZone.runOutsideAngular(() => {\n        return setInterval(() => {\n          const nInterval = +this.interval;\n          this.ngZone.run(() => {\n            if (\n              this.isPlaying &&\n              !isNaN(this.interval) &&\n              nInterval > 0 &&\n              this.slides.length\n            ) {\n              this.nextSlide();\n            } else {\n              this.pause();\n            }\n          });\n        }, interval);\n      });\n    }\n  }\n\n  /**\n   * Stops loop of auto changing of slides\n   */\n  private resetTimer(): void {\n    if (this.currentInterval) {\n      clearInterval(this.currentInterval);\n      this.currentInterval = void 0;\n    }\n  }\n}\n"]}