blob: 4c8b38509c6438676ab8c0eb2306e344496dff26 [file] [log] [blame]
/**
* @fileoverview added by tsickle
* Generated from: breadcrumbs.component.ts
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Component, ContentChildren, QueryList, ChangeDetectionStrategy, ChangeDetectorRef, ElementRef, Input, } from '@angular/core';
import { Subscription, Subject, fromEvent, merge } from 'rxjs';
import { debounceTime, distinctUntilChanged, startWith } from 'rxjs/operators';
import { TdBreadcrumbComponent } from './breadcrumb/breadcrumb.component';
export class TdBreadcrumbsComponent {
/**
* @param {?} _elementRef
* @param {?} _changeDetectorRef
*/
constructor(_elementRef, _changeDetectorRef) {
this._elementRef = _elementRef;
this._changeDetectorRef = _changeDetectorRef;
this._resizeSubscription = Subscription.EMPTY;
this._widthSubject = new Subject();
this._resizing = false;
this._separatorIcon = 'chevron_right';
// the list of hidden breadcrumbs not shown right now (responsive)
this.hiddenBreadcrumbs = [];
}
/**
* Sets the icon url shown between breadcrumbs. Defaults to 'chevron_right'.
* @param {?} separatorIcon
* @return {?}
*/
set separatorIcon(separatorIcon) {
this._separatorIcon = separatorIcon;
this.setCrumbIcons();
}
/**
* @return {?}
*/
get separatorIcon() {
return this._separatorIcon;
}
/**
* @return {?}
*/
ngOnInit() {
this._resizeSubscription = merge(fromEvent(window, 'resize').pipe(debounceTime(10)), this._widthSubject.asObservable().pipe(distinctUntilChanged())).subscribe((/**
* @return {?}
*/
() => {
if (!this._resizing) {
this._resizing = true;
setTimeout((/**
* @return {?}
*/
() => {
this._calculateVisibility();
this._resizing = false;
this._changeDetectorRef.markForCheck();
}), 100);
}
}));
}
/**
* @return {?}
*/
ngDoCheck() {
if (this._elementRef && this._elementRef.nativeElement) {
this._widthSubject.next(this.nativeElementWidth);
}
}
/**
* @return {?}
*/
ngAfterContentInit() {
this._contentChildrenSub = this._breadcrumbs.changes.pipe(startWith(this._breadcrumbs)).subscribe((/**
* @return {?}
*/
() => {
this.setCrumbIcons();
this._changeDetectorRef.markForCheck();
}));
}
/**
* @return {?}
*/
ngOnDestroy() {
this._resizeSubscription.unsubscribe();
this._contentChildrenSub.unsubscribe();
}
/*
* 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);
}
/**
* The total count of individual breadcrumbs
* @return {?}
*/
get count() {
return this._breadcrumbs ? this._breadcrumbs.length : 0;
}
/**
* Set the crumb icon separators
* @private
* @return {?}
*/
setCrumbIcons() {
if (this._breadcrumbs) {
/** @type {?} */
const breadcrumbArray = this._breadcrumbs.toArray();
breadcrumbArray.forEach((/**
* @param {?} breadcrumb
* @param {?} index
* @return {?}
*/
(breadcrumb, index) => {
breadcrumb.separatorIcon = this.separatorIcon;
// don't show the icon on the last breadcrumb
breadcrumb.displayIcon = index < breadcrumbArray.length - 1;
}));
}
}
/**
* @private
* @return {?}
*/
_calculateVisibility() {
/** @type {?} */
const crumbsArray = this._breadcrumbs.toArray();
/** @type {?} */
let crumbWidthSum = 0;
/** @type {?} */
const hiddenCrumbs = [];
// loop through crumbs in reverse order to calculate which ones should be removed
for (let i = crumbsArray.length - 1; i >= 0; i--) {
/** @type {?} */
const breadcrumb = crumbsArray[i];
// if crumb exceeds width, then we skip it from the sum and add it into the hiddencrumbs array
// and hide it
if (crumbWidthSum + breadcrumb.width > this.nativeElementWidth) {
breadcrumb.displayCrumb = false;
hiddenCrumbs.push(breadcrumb);
}
else {
// else we show it
breadcrumb.displayCrumb = true;
}
crumbWidthSum += breadcrumb.width;
}
this.hiddenBreadcrumbs = hiddenCrumbs;
this._changeDetectorRef.markForCheck();
}
}
TdBreadcrumbsComponent.decorators = [
{ type: Component, args: [{
selector: 'td-breadcrumbs',
template: "<ng-content></ng-content>\n",
/* tslint:disable-next-line */
host: {
class: 'td-breadcrumbs',
},
changeDetection: ChangeDetectionStrategy.OnPush,
styles: [":host{display:block;width:100%}:host.td-breadcrumbs{white-space:nowrap}"]
}] }
];
/** @nocollapse */
TdBreadcrumbsComponent.ctorParameters = () => [
{ type: ElementRef },
{ type: ChangeDetectorRef }
];
TdBreadcrumbsComponent.propDecorators = {
_breadcrumbs: [{ type: ContentChildren, args: [TdBreadcrumbComponent, { descendants: true },] }],
separatorIcon: [{ type: Input }]
};
if (false) {
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._resizeSubscription;
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._widthSubject;
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._contentChildrenSub;
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._resizing;
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._separatorIcon;
/** @type {?} */
TdBreadcrumbsComponent.prototype._breadcrumbs;
/** @type {?} */
TdBreadcrumbsComponent.prototype.hiddenBreadcrumbs;
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._elementRef;
/**
* @type {?}
* @private
*/
TdBreadcrumbsComponent.prototype._changeDetectorRef;
}
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{\n  Component,\n  ContentChildren,\n  QueryList,\n  OnInit,\n  OnDestroy,\n  ChangeDetectionStrategy,\n  AfterContentInit,\n  DoCheck,\n  ChangeDetectorRef,\n  ElementRef,\n  Input,\n} from '@angular/core';\n\nimport { Subscription, Subject, fromEvent, merge } from 'rxjs';\nimport { debounceTime, distinctUntilChanged, startWith } from 'rxjs/operators';\n\nimport { TdBreadcrumbComponent } from './breadcrumb/breadcrumb.component';\n\n@Component({\n  selector: 'td-breadcrumbs',\n  styleUrls: ['./breadcrumbs.component.scss'],\n  templateUrl: './breadcrumbs.component.html',\n  /* tslint:disable-next-line */\n  host: {\n    class: 'td-breadcrumbs',\n  },\n  changeDetection: ChangeDetectionStrategy.OnPush,\n})\nexport class TdBreadcrumbsComponent implements OnInit, DoCheck, AfterContentInit, OnDestroy {\n  private _resizeSubscription: Subscription = Subscription.EMPTY;\n  private _widthSubject: Subject<number> = new Subject<number>();\n  private _contentChildrenSub: Subscription;\n  private _resizing: boolean = false;\n  private _separatorIcon: string = 'chevron_right';\n\n  // all the sub components, which are the individual breadcrumbs\n  @ContentChildren(TdBreadcrumbComponent, { descendants: true }) _breadcrumbs: QueryList<TdBreadcrumbComponent>;\n  // the list of hidden breadcrumbs not shown right now (responsive)\n  hiddenBreadcrumbs: TdBreadcrumbComponent[] = [];\n\n  /**\n   * Sets the icon url shown between breadcrumbs. Defaults to 'chevron_right'.\n   */\n  @Input() public set separatorIcon(separatorIcon: string) {\n    this._separatorIcon = separatorIcon;\n    this.setCrumbIcons();\n  }\n  public get separatorIcon(): string {\n    return this._separatorIcon;\n  }\n\n  constructor(private _elementRef: ElementRef, private _changeDetectorRef: ChangeDetectorRef) {}\n\n  ngOnInit(): void {\n    this._resizeSubscription = merge(\n      fromEvent(window, 'resize').pipe(debounceTime(10)),\n      this._widthSubject.asObservable().pipe(distinctUntilChanged()),\n    ).subscribe(() => {\n      if (!this._resizing) {\n        this._resizing = true;\n        setTimeout(() => {\n          this._calculateVisibility();\n          this._resizing = false;\n          this._changeDetectorRef.markForCheck();\n        }, 100);\n      }\n    });\n  }\n\n  ngDoCheck(): void {\n    if (this._elementRef && this._elementRef.nativeElement) {\n      this._widthSubject.next(this.nativeElementWidth);\n    }\n  }\n\n  ngAfterContentInit(): void {\n    this._contentChildrenSub = this._breadcrumbs.changes.pipe(startWith(this._breadcrumbs)).subscribe(() => {\n      this.setCrumbIcons();\n      this._changeDetectorRef.markForCheck();\n    });\n  }\n\n  ngOnDestroy(): void {\n    this._resizeSubscription.unsubscribe();\n    this._contentChildrenSub.unsubscribe();\n  }\n\n  /*\n   * Current width of the element container\n   */\n  get nativeElementWidth(): number {\n    const element: HTMLElement = <HTMLElement>this._elementRef.nativeElement;\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  /**\n   * The total count of individual breadcrumbs\n   */\n  get count(): number {\n    return this._breadcrumbs ? this._breadcrumbs.length : 0;\n  }\n\n  /**\n   * Set the crumb icon separators\n   */\n  private setCrumbIcons(): void {\n    if (this._breadcrumbs) {\n      const breadcrumbArray: TdBreadcrumbComponent[] = this._breadcrumbs.toArray();\n      breadcrumbArray.forEach((breadcrumb: TdBreadcrumbComponent, index: number) => {\n        breadcrumb.separatorIcon = this.separatorIcon;\n        // don't show the icon on the last breadcrumb\n        breadcrumb.displayIcon = index < breadcrumbArray.length - 1;\n      });\n    }\n  }\n\n  private _calculateVisibility(): void {\n    const crumbsArray: TdBreadcrumbComponent[] = this._breadcrumbs.toArray();\n    let crumbWidthSum: number = 0;\n    const hiddenCrumbs: TdBreadcrumbComponent[] = [];\n    // loop through crumbs in reverse order to calculate which ones should be removed\n    for (let i: number = crumbsArray.length - 1; i >= 0; i--) {\n      const breadcrumb: TdBreadcrumbComponent = crumbsArray[i];\n      // if crumb exceeds width, then we skip it from the sum and add it into the hiddencrumbs array\n      // and hide it\n      if (crumbWidthSum + breadcrumb.width > this.nativeElementWidth) {\n        breadcrumb.displayCrumb = false;\n        hiddenCrumbs.push(breadcrumb);\n      } else {\n        // else we show it\n        breadcrumb.displayCrumb = true;\n      }\n      crumbWidthSum += breadcrumb.width;\n    }\n    this.hiddenBreadcrumbs = hiddenCrumbs;\n    this._changeDetectorRef.markForCheck();\n  }\n}\n"]}