blob: 27b49cebc0b1fcce76dfd807d39b21fa43197370 [file] [log] [blame]
/**
* @fileoverview added by tsickle
* Generated from: nav/nav-steps-horizontal/nav-steps-horizontal.component.ts
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Component, Optional, ContentChildren, ViewChild, QueryList, ChangeDetectionStrategy, ChangeDetectorRef, ElementRef, Renderer2, } from '@angular/core';
import { Subject, merge, of } from 'rxjs';
import { distinctUntilChanged, takeUntil } from 'rxjs/operators';
import { Directionality } from '@angular/cdk/bidi';
import { RIGHT_ARROW, LEFT_ARROW } from '@angular/cdk/keycodes';
import { ViewportRuler } from '@angular/cdk/scrolling';
import { TdNavStepLinkComponent } from '../nav-step-link/nav-step-link.component';
export class TdNavStepsHorizontalComponent {
/**
* @param {?} _elementRef
* @param {?} _viewportRuler
* @param {?} _dir
* @param {?} _renderer
* @param {?} _changeDetectorRef
*/
constructor(_elementRef, _viewportRuler, _dir, _renderer, _changeDetectorRef) {
this._elementRef = _elementRef;
this._viewportRuler = _viewportRuler;
this._dir = _dir;
this._renderer = _renderer;
this._changeDetectorRef = _changeDetectorRef;
this._separators = [];
/**
* Emits when the component is destroyed.
*/
this._destroyed = new Subject();
this._widthSubject = new Subject();
this._scrollDistance = 0;
this._scrollDistanceChanged = false;
/**
* Whether the controls for pagination should be displayed
*/
this._showPaginationControls = false;
/**
* Whether the step list can be scrolled more towards the end.
*/
this._disableScrollAfter = true;
/**
* Whether the step list can be scrolled more towards the beginning.
*/
this._disableScrollBefore = true;
}
/*
* Current width of the element container
*/
/**
* @return {?}
*/
get nativeElementWidth() {
/** @type {?} */
const element = (/** @type {?} */ (this._elementRef.nativeElement));
// Need to take into account border, margin and padding that might be around all the crumbs
/** @type {?} */
const style = window.getComputedStyle(element);
/** @type {?} */
const borderLeft = parseInt(style.borderLeft, 10);
/** @type {?} */
const borderRight = parseInt(style.borderRight, 10);
/** @type {?} */
const marginLeft = parseInt(style.marginLeft, 10);
/** @type {?} */
const marginRight = parseInt(style.marginRight, 10);
/** @type {?} */
const paddingLeft = parseInt(style.paddingLeft, 10);
/** @type {?} */
const paddingRight = parseInt(style.paddingRight, 10);
return (element.getBoundingClientRect().width -
borderLeft -
borderRight -
marginLeft -
marginRight -
paddingLeft -
paddingRight);
}
/**
* @return {?}
*/
ngAfterContentInit() {
merge(this._widthSubject.asObservable().pipe(distinctUntilChanged()), this._viewportRuler.change(150), this._dir ? this._dir.change : of(undefined), this._steps.changes)
.pipe(takeUntil(this._destroyed))
.subscribe((/**
* @return {?}
*/
() => {
this._configureSteps();
this.updatePagination();
this._changeDetectorRef.markForCheck();
}));
this._configureSteps();
this._changeDetectorRef.markForCheck();
}
/**
* @return {?}
*/
ngAfterContentChecked() {
if (this._elementRef && this._elementRef.nativeElement) {
this._widthSubject.next(this.nativeElementWidth);
}
if (this._scrollDistanceChanged) {
this._updateStepScrollPosition();
this._scrollDistanceChanged = false;
this._changeDetectorRef.markForCheck();
}
}
/**
* @return {?}
*/
ngOnDestroy() {
this._destroyed.next();
this._destroyed.complete();
}
/**
* Listen to right and left key events to move the the viewport.
* @param {?} event
* @return {?}
*/
_handleKeydown(event) {
switch (event.keyCode) {
case LEFT_ARROW:
this._scrollHeader('before');
event.preventDefault();
break;
case RIGHT_ARROW:
this._scrollHeader('after');
event.preventDefault();
break;
default:
// do something
}
}
/**
* Updates the view whether pagination should be enabled or not.
* @return {?}
*/
updatePagination() {
this._checkPaginationEnabled();
this._checkScrollingControls();
this._updateStepScrollPosition();
}
/**
* The layout direction of the containing app.
* @return {?}
*/
_getLayoutDirection() {
return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';
}
/**
* Performs the CSS transformation on the step list that will cause the list to scroll.
* @return {?}
*/
_updateStepScrollPosition() {
/** @type {?} */
const translateX = this._getLayoutDirection() === 'ltr' ? -this.scrollDistance : this.scrollDistance;
// Move step list the amount of pixels scrolled
this._stepList.nativeElement.style.transform = `translateX(${Math.round(translateX)}px)`;
// Setting the `transform` on IE will change the scroll offset of the parent, causing the
// position to be thrown off in some cases. We have to reset it ourselves to ensure that
// it doesn't get thrown off.
if (this._getLayoutDirection() === 'ltr') {
this._stepListContainer.nativeElement.scrollLeft = 0;
}
else {
this._stepListContainer.nativeElement.scrollLeft = this._getMaxScrollDistance();
}
}
/**
* Sets the distance in pixels that the step header should be transformed in the X-axis.
* @return {?}
*/
get scrollDistance() {
return this._scrollDistance;
}
/**
* @param {?} v
* @return {?}
*/
set scrollDistance(v) {
this._scrollDistance = Math.max(0, Math.min(this._getMaxScrollDistance(), v));
// Mark that the scroll distance has changed so that after the view is checked, the CSS
// transformation can move the header.
this._scrollDistanceChanged = true;
this._checkScrollingControls();
}
/**
* Moves the step list in the 'before' or 'after' direction (towards the beginning of the list or
* the end of the list, respectively).
* @param {?} scrollDir
* @return {?}
*/
_scrollHeader(scrollDir) {
// Move the scroll distance one-half the length of the step list's viewport.
this.scrollDistance += ((scrollDir === 'before' ? -1 : 1) * this._stepListContainer.nativeElement.offsetWidth) / 2;
}
/**
* Evaluate whether the pagination controls should be displayed. If the scroll width of the
* step list is wider than the size of the header container, then the pagination controls should
* be shown.
* @return {?}
*/
_checkPaginationEnabled() {
/** @type {?} */
const isEnabled = this._stepList.nativeElement.scrollWidth > this._elementRef.nativeElement.offsetWidth;
if (!isEnabled) {
this.scrollDistance = 0;
}
if (isEnabled !== this._showPaginationControls) {
this._changeDetectorRef.markForCheck();
}
this._showPaginationControls = isEnabled;
}
/**
* Evaluate whether the before and after controls should be enabled or disabled.
* If the header is at the beginning of the list (scroll distance is equal to 0) then disable the
* before button. If the header is at the end of the list (scroll distance is equal to the
* maximum distance we can scroll), then disable the after button.
* @return {?}
*/
_checkScrollingControls() {
// Check if the pagination arrows should be activated.
this._disableScrollBefore = this.scrollDistance === 0;
this._disableScrollAfter = this.scrollDistance === this._getMaxScrollDistance();
this._changeDetectorRef.markForCheck();
}
/**
* Determines what is the maximum length in pixels that can be set for the scroll distance. This
* is equal to the difference in width between the step list container and step header container.
* @return {?}
*/
_getMaxScrollDistance() {
return this._stepList.nativeElement.scrollWidth - this._stepListContainer.nativeElement.offsetWidth || 0;
}
/**
* Set the step line separators and display numbers
* @private
* @return {?}
*/
_configureSteps() {
this._separators.forEach((/**
* @param {?} separator
* @return {?}
*/
(separator) => {
this._renderer.removeChild(this._stepList.nativeElement, separator);
}));
/** @type {?} */
const stepsArray = this._steps.toArray();
// set the index number of the step so can display that number in circle
stepsArray.forEach((/**
* @param {?} step
* @param {?} index
* @return {?}
*/
(step, index) => {
if (index > 0 && index < stepsArray.length) {
/** @type {?} */
const separator = this._renderer.createElement('div');
this._renderer.addClass(separator, 'td-horizontal-line');
this._separators.push(separator);
this._renderer.insertBefore(this._stepList.nativeElement, separator, step.elementRef.nativeElement);
}
step.number = index + 1;
}));
}
}
TdNavStepsHorizontalComponent.decorators = [
{ type: Component, args: [{
selector: 'nav[td-steps][horizontal]',
template: "<div class=\"td-steps-header\">\n <div\n class=\"td-step-header-pagination td-step-header-pagination-before mat-elevation-z4\"\n aria-hidden=\"true\"\n mat-ripple\n [matRippleDisabled]=\"_disableScrollBefore\"\n [class.td-step-header-pagination-disabled]=\"_disableScrollBefore\"\n (click)=\"_scrollHeader('before')\"\n >\n <div class=\"td-step-header-pagination-chevron\"></div>\n </div>\n <div #stepListContainer class=\"td-steps-header-container\" (keydown)=\"_handleKeydown($event)\">\n <div #stepList class=\"td-steps-header-list\">\n <ng-content></ng-content>\n </div>\n </div>\n <div\n class=\"td-step-header-pagination td-step-header-pagination-after mat-elevation-z4\"\n aria-hidden=\"true\"\n mat-ripple\n [matRippleDisabled]=\"_disableScrollAfter\"\n [class.td-step-header-pagination-disabled]=\"_disableScrollAfter\"\n (click)=\"_scrollHeader('after')\"\n >\n <div class=\"td-step-header-pagination-chevron\"></div>\n </div>\n</div>\n",
changeDetection: ChangeDetectionStrategy.OnPush,
/* tslint:disable-next-line */
host: {
'class': 'td-steps td-steps-horizontal',
'[class.td-step-header-pagination-controls-enabled]': '_showPaginationControls',
'[class.td-step-header-rtl]': "_getLayoutDirection() == 'rtl'",
},
styles: [":host{display:block;width:100%}.td-steps-header,.td-steps-header-list{-ms-flex-direction:row;box-sizing:border-box;display:-ms-flexbox;display:flex;flex-direction:row}.td-steps-header-container{-ms-flex-positive:1;display:-ms-flexbox;display:flex;flex-grow:1;overflow:hidden;z-index:1}.td-steps-header-list{-ms-flex-align:center;-ms-flex-line-pack:center;-ms-flex-pack:start;-ms-flex-positive:1;align-content:center;align-items:center;flex-grow:1;justify-content:flex-start;max-width:100%;position:relative;transition:transform .5s cubic-bezier(.35,0,.25,1)}.td-step-header-pagination{-ms-flex-align:center;-ms-flex-pack:center;align-items:center;cursor:pointer;display:none;justify-content:center;min-width:32px;position:relative;z-index:2}:host.td-step-header-pagination-controls-enabled .td-step-header-pagination{display:-ms-flexbox;display:flex}.td-step-header-pagination-before,:host.td-step-header-rtl .td-step-header-pagination-after{padding-left:4px}.td-step-header-pagination-before .td-step-header-pagination-chevron,:host.td-step-header-rtl .td-step-header-pagination-after .td-step-header-pagination-chevron{-ms-transform:rotate(-135deg);transform:rotate(-135deg)}.td-step-header-pagination-after,:host.td-step-header-rtl .td-step-header-pagination-before{padding-right:4px}.td-step-header-pagination-after .td-step-header-pagination-chevron,:host.td-step-header-rtl .td-step-header-pagination-before .td-step-header-pagination-chevron{-ms-transform:rotate(45deg);transform:rotate(45deg)}.td-step-header-pagination-chevron{border-style:solid;border-width:2px 2px 0 0;content:\"\";height:8px;width:8px}.td-step-header-pagination-disabled{box-shadow:none;cursor:default}.td-horizontal-line{-ms-flex:1;border-bottom-style:solid;border-bottom-width:1px;box-sizing:border-box;flex:1;height:1px;min-width:20px}"]
}] }
];
/** @nocollapse */
TdNavStepsHorizontalComponent.ctorParameters = () => [
{ type: ElementRef },
{ type: ViewportRuler },
{ type: Directionality, decorators: [{ type: Optional }] },
{ type: Renderer2 },
{ type: ChangeDetectorRef }
];
TdNavStepsHorizontalComponent.propDecorators = {
_steps: [{ type: ContentChildren, args: [TdNavStepLinkComponent, { descendants: true },] }],
_stepListContainer: [{ type: ViewChild, args: ['stepListContainer', { static: true },] }],
_stepList: [{ type: ViewChild, args: ['stepList', { static: true },] }]
};
if (false) {
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._separators;
/**
* Emits when the component is destroyed.
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._destroyed;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._widthSubject;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._scrollDistance;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._scrollDistanceChanged;
/**
* Whether the controls for pagination should be displayed
* @type {?}
*/
TdNavStepsHorizontalComponent.prototype._showPaginationControls;
/**
* Whether the step list can be scrolled more towards the end.
* @type {?}
*/
TdNavStepsHorizontalComponent.prototype._disableScrollAfter;
/**
* Whether the step list can be scrolled more towards the beginning.
* @type {?}
*/
TdNavStepsHorizontalComponent.prototype._disableScrollBefore;
/** @type {?} */
TdNavStepsHorizontalComponent.prototype._steps;
/** @type {?} */
TdNavStepsHorizontalComponent.prototype._stepListContainer;
/** @type {?} */
TdNavStepsHorizontalComponent.prototype._stepList;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._elementRef;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._viewportRuler;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._dir;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._renderer;
/**
* @type {?}
* @private
*/
TdNavStepsHorizontalComponent.prototype._changeDetectorRef;
}
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{\n  Component,\n  Optional,\n  ContentChildren,\n  ViewChild,\n  QueryList,\n  OnDestroy,\n  ChangeDetectionStrategy,\n  AfterContentInit,\n  AfterContentChecked,\n  ChangeDetectorRef,\n  ElementRef,\n  Renderer2,\n} from '@angular/core';\n\nimport { Subject, merge, of } from 'rxjs';\nimport { distinctUntilChanged, takeUntil } from 'rxjs/operators';\n\nimport { Direction, Directionality } from '@angular/cdk/bidi';\nimport { RIGHT_ARROW, LEFT_ARROW } from '@angular/cdk/keycodes';\nimport { ViewportRuler } from '@angular/cdk/scrolling';\n\nimport { TdNavStepLinkComponent } from '../nav-step-link/nav-step-link.component';\n\n/**\n * The directions that scrolling can go in when the header's tabs exceed the header width. 'After'\n * will scroll the header towards the end of the tabs list and 'before' will scroll towards the\n * beginning of the list.\n */\nexport type ScrollDirection = 'after' | 'before';\n\n@Component({\n  selector: 'nav[td-steps][horizontal]',\n  styleUrls: ['./nav-steps-horizontal.component.scss'],\n  templateUrl: './nav-steps-horizontal.component.html',\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  /* tslint:disable-next-line */\n  host: {\n    'class': 'td-steps td-steps-horizontal',\n    '[class.td-step-header-pagination-controls-enabled]': '_showPaginationControls',\n    '[class.td-step-header-rtl]': \"_getLayoutDirection() == 'rtl'\",\n  },\n})\nexport class TdNavStepsHorizontalComponent implements AfterContentChecked, AfterContentInit, OnDestroy {\n  private _separators: HTMLElement[] = [];\n\n  /** Emits when the component is destroyed. */\n  private readonly _destroyed: Subject<void> = new Subject<void>();\n\n  private _widthSubject: Subject<number> = new Subject<number>();\n\n  private _scrollDistance: number = 0;\n  private _scrollDistanceChanged: boolean = false;\n\n  /** Whether the controls for pagination should be displayed */\n  _showPaginationControls: boolean = false;\n\n  /** Whether the step list can be scrolled more towards the end. */\n  _disableScrollAfter: boolean = true;\n\n  /** Whether the step list can be scrolled more towards the beginning. */\n  _disableScrollBefore: boolean = true;\n\n  // all the sub components, which are the individual steps\n  @ContentChildren(TdNavStepLinkComponent, { descendants: true }) _steps: QueryList<TdNavStepLinkComponent>;\n\n  @ViewChild('stepListContainer', { static: true }) _stepListContainer: ElementRef;\n  @ViewChild('stepList', { static: true }) _stepList: ElementRef;\n\n  /*\n   * Current width of the element container\n   */\n  get nativeElementWidth(): number {\n    const element: HTMLElement = <HTMLElement>this._elementRef.nativeElement;\n\n    // Need to take into account border, margin and padding that might be around all the crumbs\n    const style: CSSStyleDeclaration = window.getComputedStyle(element);\n    const borderLeft: number = parseInt(style.borderLeft, 10);\n    const borderRight: number = parseInt(style.borderRight, 10);\n    const marginLeft: number = parseInt(style.marginLeft, 10);\n    const marginRight: number = parseInt(style.marginRight, 10);\n    const paddingLeft: number = parseInt(style.paddingLeft, 10);\n    const paddingRight: number = parseInt(style.paddingRight, 10);\n\n    return (\n      element.getBoundingClientRect().width -\n      borderLeft -\n      borderRight -\n      marginLeft -\n      marginRight -\n      paddingLeft -\n      paddingRight\n    );\n  }\n\n  constructor(\n    private _elementRef: ElementRef,\n    private _viewportRuler: ViewportRuler,\n    @Optional() private _dir: Directionality,\n    private _renderer: Renderer2,\n    private _changeDetectorRef: ChangeDetectorRef,\n  ) {}\n\n  ngAfterContentInit(): void {\n    merge(\n      this._widthSubject.asObservable().pipe(distinctUntilChanged()),\n      this._viewportRuler.change(150),\n      this._dir ? this._dir.change : of(undefined),\n      this._steps.changes,\n    )\n      .pipe(takeUntil(this._destroyed))\n      .subscribe(() => {\n        this._configureSteps();\n        this.updatePagination();\n        this._changeDetectorRef.markForCheck();\n      });\n    this._configureSteps();\n    this._changeDetectorRef.markForCheck();\n  }\n\n  ngAfterContentChecked(): void {\n    if (this._elementRef && this._elementRef.nativeElement) {\n      this._widthSubject.next(this.nativeElementWidth);\n    }\n    if (this._scrollDistanceChanged) {\n      this._updateStepScrollPosition();\n      this._scrollDistanceChanged = false;\n      this._changeDetectorRef.markForCheck();\n    }\n  }\n\n  ngOnDestroy(): void {\n    this._destroyed.next();\n    this._destroyed.complete();\n  }\n\n  /**\n   * Listen to right and left key events to move the the viewport.\n   */\n  _handleKeydown(event: KeyboardEvent): void {\n    switch (event.keyCode) {\n      case LEFT_ARROW:\n        this._scrollHeader('before');\n        event.preventDefault();\n        break;\n      case RIGHT_ARROW:\n        this._scrollHeader('after');\n        event.preventDefault();\n        break;\n      default:\n      // do something\n    }\n  }\n\n  /**\n   * Updates the view whether pagination should be enabled or not.\n   */\n  updatePagination(): void {\n    this._checkPaginationEnabled();\n    this._checkScrollingControls();\n    this._updateStepScrollPosition();\n  }\n\n  /** The layout direction of the containing app. */\n  _getLayoutDirection(): Direction {\n    return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';\n  }\n\n  /** Performs the CSS transformation on the step list that will cause the list to scroll. */\n  _updateStepScrollPosition(): void {\n    const translateX: number = this._getLayoutDirection() === 'ltr' ? -this.scrollDistance : this.scrollDistance;\n    // Move step list the amount of pixels scrolled\n    this._stepList.nativeElement.style.transform = `translateX(${Math.round(translateX)}px)`;\n\n    // Setting the `transform` on IE will change the scroll offset of the parent, causing the\n    // position to be thrown off in some cases. We have to reset it ourselves to ensure that\n    // it doesn't get thrown off.\n    if (this._getLayoutDirection() === 'ltr') {\n      this._stepListContainer.nativeElement.scrollLeft = 0;\n    } else {\n      this._stepListContainer.nativeElement.scrollLeft = this._getMaxScrollDistance();\n    }\n  }\n\n  /** Sets the distance in pixels that the step header should be transformed in the X-axis. */\n  get scrollDistance(): number {\n    return this._scrollDistance;\n  }\n  set scrollDistance(v: number) {\n    this._scrollDistance = Math.max(0, Math.min(this._getMaxScrollDistance(), v));\n\n    // Mark that the scroll distance has changed so that after the view is checked, the CSS\n    // transformation can move the header.\n    this._scrollDistanceChanged = true;\n    this._checkScrollingControls();\n  }\n\n  /**\n   * Moves the step list in the 'before' or 'after' direction (towards the beginning of the list or\n   * the end of the list, respectively).\n   */\n  _scrollHeader(scrollDir: ScrollDirection): void {\n    // Move the scroll distance one-half the length of the step list's viewport.\n    this.scrollDistance += ((scrollDir === 'before' ? -1 : 1) * this._stepListContainer.nativeElement.offsetWidth) / 2;\n  }\n\n  /**\n   * Evaluate whether the pagination controls should be displayed. If the scroll width of the\n   * step list is wider than the size of the header container, then the pagination controls should\n   * be shown.\n   */\n  _checkPaginationEnabled(): void {\n    const isEnabled: boolean = this._stepList.nativeElement.scrollWidth > this._elementRef.nativeElement.offsetWidth;\n\n    if (!isEnabled) {\n      this.scrollDistance = 0;\n    }\n\n    if (isEnabled !== this._showPaginationControls) {\n      this._changeDetectorRef.markForCheck();\n    }\n\n    this._showPaginationControls = isEnabled;\n  }\n\n  /**\n   * Evaluate whether the before and after controls should be enabled or disabled.\n   * If the header is at the beginning of the list (scroll distance is equal to 0) then disable the\n   * before button. If the header is at the end of the list (scroll distance is equal to the\n   * maximum distance we can scroll), then disable the after button.\n   */\n  _checkScrollingControls(): void {\n    // Check if the pagination arrows should be activated.\n    this._disableScrollBefore = this.scrollDistance === 0;\n    this._disableScrollAfter = this.scrollDistance === this._getMaxScrollDistance();\n    this._changeDetectorRef.markForCheck();\n  }\n\n  /**\n   * Determines what is the maximum length in pixels that can be set for the scroll distance. This\n   * is equal to the difference in width between the step list container and step header container.\n   */\n  _getMaxScrollDistance(): number {\n    return this._stepList.nativeElement.scrollWidth - this._stepListContainer.nativeElement.offsetWidth || 0;\n  }\n\n  /**\n   * Set the step line separators and display numbers\n   */\n  private _configureSteps(): void {\n    this._separators.forEach((separator: HTMLElement) => {\n      this._renderer.removeChild(this._stepList.nativeElement, separator);\n    });\n    const stepsArray: TdNavStepLinkComponent[] = this._steps.toArray();\n    // set the index number of the step so can display that number in circle\n    stepsArray.forEach((step: TdNavStepLinkComponent, index: number) => {\n      if (index > 0 && index < stepsArray.length) {\n        const separator: any = this._renderer.createElement('div');\n        this._renderer.addClass(separator, 'td-horizontal-line');\n        this._separators.push(separator);\n        this._renderer.insertBefore(this._stepList.nativeElement, separator, step.elementRef.nativeElement);\n      }\n      step.number = index + 1;\n    });\n  }\n}\n"]}