@clr/angular
Version:
Angular components for Clarity
141 lines • 17.9 kB
JavaScript
/*
* Copyright (c) 2016-2023 VMware, Inc. All Rights Reserved.
* This software is released under MIT license.
* The full license information can be found in LICENSE in the root directory of this project.
*/
import { DOCUMENT } from '@angular/common';
import { Inject, Injectable } from '@angular/core';
import { fromEvent } from 'rxjs';
import { filter } from 'rxjs/operators';
import * as i0 from "@angular/core";
import * as i1 from "./popover-toggle.service";
// https://github.com/angular/angular/issues/20351#issuecomment-344009887
/** @dynamic */
export class ClrPopoverEventsService {
constructor(renderer, smartOpenService, document) {
this.renderer = renderer;
this.smartOpenService = smartOpenService;
this.document = document;
this.outsideClickClose = true;
this.scrollToClose = true;
this.subscriptions = [];
this.subscriptions.push(smartOpenService.openChange.subscribe(open => {
if (open) {
this.addEscapeListener();
this.addClickListener();
this.addScrollListener();
}
else {
this.removeAllEventListeners();
}
}), smartOpenService.getEventChange().subscribe(event => {
// Remember the event that was used to open the content
this.ignoredEvent = event;
}));
}
ngOnDestroy() {
this.subscriptions.forEach(sub => sub.unsubscribe());
this.removeAllEventListeners();
}
addScrollListener() {
if (this.scrollToClose) {
this.documentScroller = fromEvent(this.document, 'scroll', { capture: true });
this.scrollSubscription = this.documentScroller
.pipe(filter(this.testForSmartPopoverContentContainer))
.subscribe(() => {
this.smartOpenService.open = false;
this.setAnchorFocus();
});
}
else {
// I think this is where dynamic re-positioning will be added
// Instead of testing like we do in the close pipe below
// we need to switch positioning to use an observable and then
// debounce the scroll events to recalculate content position in a performant way
// For now, ignore scrolling events.
return;
}
}
removeScrollListener() {
if (this.documentScroller) {
this.scrollSubscription.unsubscribe();
delete this.documentScroller;
}
}
addClickListener() {
if (this.outsideClickClose) {
this.documentClickListener = this.renderer.listen(this.document, 'click', (event) => {
if (event === this.ignoredEvent) {
// Here we ignore the opening click event (w/o this content opens and immediately closes.
delete this.ignoredEvent;
}
else {
this.smartOpenService.open = false;
// Rather than a complex change to the focus trap I put focus on the element that was clicked
const clickedElement = event.target;
clickedElement.focus();
}
});
}
}
removeClickListener() {
if (this.outsideClickClose) {
delete this.ignoredEvent;
if (this.documentClickListener) {
this.documentClickListener();
delete this.documentClickListener;
}
}
}
addEscapeListener() {
this.escapeListener = this.renderer.listen(this.document, 'keydown.escape', () => {
this.smartOpenService.open = false;
this.setAnchorFocus();
});
}
removeEscapeListener() {
if (this.escapeListener) {
this.escapeListener();
delete this.escapeListener;
}
}
setCloseFocus() {
this.closeButtonRef.nativeElement.focus();
}
setAnchorFocus() {
this.anchorButtonRef.nativeElement.focus();
}
testForSmartPopoverContentContainer(event) {
// Filter for the documentScroller observable event targets
let target = event.target;
// Walk up the DOM tree until we get to the element that is a direct child of the body.
while (target.classList && target.parentElement.localName !== 'body') {
target = target.parentElement;
}
// Target is the child element of body where the scroll events originated.
// Return false and prevent the popover content container from closing for any scroll events inside a popover
// content container.
if (target.classList) {
// check scroll events to see if they are happening in popover content or elsewhere
return target.classList.contains('clr-popover-content') ? false : true;
}
else {
// prevents it from closing right after first opening
return false;
}
}
removeAllEventListeners() {
this.removeScrollListener();
this.removeClickListener();
this.removeEscapeListener();
}
}
ClrPopoverEventsService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.2", ngImport: i0, type: ClrPopoverEventsService, deps: [{ token: i0.Renderer2 }, { token: i1.ClrPopoverToggleService }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });
ClrPopoverEventsService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "15.2.2", ngImport: i0, type: ClrPopoverEventsService });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.2", ngImport: i0, type: ClrPopoverEventsService, decorators: [{
type: Injectable
}], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i1.ClrPopoverToggleService }, { type: HTMLDocument, decorators: [{
type: Inject,
args: [DOCUMENT]
}] }]; } });
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All Rights Reserved.\n * This software is released under MIT license.\n * The full license information can be found in LICENSE in the root directory of this project.\n */\n\nimport { DOCUMENT } from '@angular/common';\nimport { ElementRef, Inject, Injectable, OnDestroy, Renderer2 } from '@angular/core';\nimport { fromEvent, Observable, Subscription } from 'rxjs';\nimport { filter } from 'rxjs/operators';\n\nimport { ClrPopoverToggleService } from './popover-toggle.service';\n\n// https://github.com/angular/angular/issues/20351#issuecomment-344009887\n/** @dynamic */\n@Injectable()\nexport class ClrPopoverEventsService implements OnDestroy {\n  outsideClickClose = true;\n  scrollToClose = true;\n  ignoredEvent: any;\n  anchorButtonRef: ElementRef;\n  closeButtonRef: ElementRef;\n  contentRef: ElementRef;\n\n  private documentClickListener: () => void;\n  private escapeListener: () => void;\n  private scrollSubscription: Subscription;\n  private subscriptions: Subscription[] = [];\n  private documentScroller: Observable<Event>;\n\n  constructor(\n    private renderer: Renderer2,\n    private smartOpenService: ClrPopoverToggleService,\n    @Inject(DOCUMENT) private document: HTMLDocument\n  ) {\n    this.subscriptions.push(\n      smartOpenService.openChange.subscribe(open => {\n        if (open) {\n          this.addEscapeListener();\n          this.addClickListener();\n          this.addScrollListener();\n        } else {\n          this.removeAllEventListeners();\n        }\n      }),\n      smartOpenService.getEventChange().subscribe(event => {\n        // Remember the event that was used to open the content\n        this.ignoredEvent = event;\n      })\n    );\n  }\n\n  ngOnDestroy(): void {\n    this.subscriptions.forEach(sub => sub.unsubscribe());\n    this.removeAllEventListeners();\n  }\n\n  addScrollListener() {\n    if (this.scrollToClose) {\n      this.documentScroller = fromEvent(this.document, 'scroll', { capture: true });\n      this.scrollSubscription = this.documentScroller\n        .pipe(filter(this.testForSmartPopoverContentContainer))\n        .subscribe(() => {\n          this.smartOpenService.open = false;\n          this.setAnchorFocus();\n        });\n    } else {\n      // I think this is where dynamic re-positioning will be added\n      // Instead of testing like we do in the close pipe below\n      // we need to switch positioning to use an observable and then\n      // debounce the scroll events to recalculate content position in a performant way\n      // For now, ignore scrolling events.\n      return;\n    }\n  }\n\n  removeScrollListener() {\n    if (this.documentScroller) {\n      this.scrollSubscription.unsubscribe();\n      delete this.documentScroller;\n    }\n  }\n\n  addClickListener() {\n    if (this.outsideClickClose) {\n      this.documentClickListener = this.renderer.listen(this.document, 'click', (event: MouseEvent) => {\n        if (event === this.ignoredEvent) {\n          // Here we ignore the opening click event (w/o this content opens and immediately closes.\n          delete this.ignoredEvent;\n        } else {\n          this.smartOpenService.open = false;\n          // Rather than a complex change to the focus trap I put focus on the element that was clicked\n          const clickedElement = event.target as HTMLElement;\n          clickedElement.focus();\n        }\n      });\n    }\n  }\n\n  removeClickListener() {\n    if (this.outsideClickClose) {\n      delete this.ignoredEvent;\n      if (this.documentClickListener) {\n        this.documentClickListener();\n        delete this.documentClickListener;\n      }\n    }\n  }\n\n  addEscapeListener() {\n    this.escapeListener = this.renderer.listen(this.document, 'keydown.escape', () => {\n      this.smartOpenService.open = false;\n      this.setAnchorFocus();\n    });\n  }\n\n  removeEscapeListener() {\n    if (this.escapeListener) {\n      this.escapeListener();\n      delete this.escapeListener;\n    }\n  }\n\n  setCloseFocus(): void {\n    this.closeButtonRef.nativeElement.focus();\n  }\n\n  setAnchorFocus(): void {\n    this.anchorButtonRef.nativeElement.focus();\n  }\n\n  private testForSmartPopoverContentContainer(event: Event): boolean {\n    // Filter for the documentScroller observable event targets\n    let target = event.target as HTMLElement;\n\n    // Walk up the DOM tree until we get to the element that is a direct child of the body.\n    while (target.classList && target.parentElement.localName !== 'body') {\n      target = target.parentElement;\n    }\n\n    // Target is the child element of body where the scroll events originated.\n    // Return false and prevent the popover content container from closing for any scroll events inside a popover\n    // content container.\n    if (target.classList) {\n      // check scroll events to see if they are happening in popover content or elsewhere\n      return target.classList.contains('clr-popover-content') ? false : true;\n    } else {\n      // prevents it from closing right after first opening\n      return false;\n    }\n  }\n\n  private removeAllEventListeners() {\n    this.removeScrollListener();\n    this.removeClickListener();\n    this.removeEscapeListener();\n  }\n}\n"]}