[CL-910] Use tooltip in title directive (#17084)

* use tooltip in a11y directive

* remove commented code

* add deprecation warning to appA11yTitle directive

* use label for tooltip in carousel nav

* wait for timeout before assertion

* remove unnecessary title directive use

* fix private variable lint errors

* increase tooltip show delay

* fix spec delay and export as constant

* use delay constant

---------

Co-authored-by: Vicki League <vleague@bitwarden.com>

libs/components/src/a11y/a11y-title.directive.ts

@@ -1,23 +1,21 @@
-import { Directive, effect, ElementRef, input } from "@angular/core";
+import { Directive } from "@angular/core";
 
-import { setA11yTitleAndAriaLabel } from "./set-a11y-title-and-aria-label";
+import { TooltipDirective } from "../tooltip/tooltip.directive";
 
+/**
+ * @deprecated This function is deprecated in favor of `bitTooltip`.
+ * Please use `bitTooltip` instead.
+ *
+ * Directive that provides accessible tooltips by internally using TooltipDirective.
+ * This maintains the appA11yTitle API while leveraging the enhanced tooltip functionality.
+ */
 @Directive({
   selector: "[appA11yTitle]",
+  hostDirectives: [
+    {
+      directive: TooltipDirective,
+      inputs: ["bitTooltip: appA11yTitle", "tooltipPosition"],
+    },
+  ],
 })
-export class A11yTitleDirective {
-  readonly title = input.required<string>({ alias: "appA11yTitle" });
-
-  constructor(private el: ElementRef) {
-    const originalTitle = this.el.nativeElement.getAttribute("title");
-    const originalAriaLabel = this.el.nativeElement.getAttribute("aria-label");
-
-    effect(() => {
-      setA11yTitleAndAriaLabel({
-        element: this.el.nativeElement,
-        title: originalTitle ?? this.title(),
-        label: originalAriaLabel ?? this.title(),
-      });
-    });
-  }
-}
+export class A11yTitleDirective {}

libs/components/src/icon-button/icon-button.component.ts

@@ -120,7 +120,7 @@ export class BitIconButtonComponent implements ButtonLikeAbstraction, FocusableE
    * label input will be used to set the `aria-label` attributes on the button.
    * This is for accessibility purposes, as it provides a text alternative for the icon button.
    *
-   * NOTE: It will also be used to set the `title` attribute on the button if no `title` is provided.
+   * NOTE: It will also be used to set the content of the tooltip on the button if no `title` is provided.
    */
   readonly label = input<string>();
 

libs/components/src/icon-button/icon-button.mdx

@@ -81,10 +81,5 @@ with less padding around the icon, such as in the navigation component.
 
 Follow guidelines outlined in the [Button docs](?path=/docs/component-library-button--doc)
 
-Always use the `appA11yTitle` directive set to a string that describes the action of the
-icon-button. This will auto assign the same string to the `title` and `aria-label` attributes.
-
-`aria-label` allows assistive technology to announce the action the button takes to the users.
-
-`title` attribute provides a user with the browser tool tip if they do not understand what the icon
-is indicating.
+label input will be used to set the `aria-label` attributes on the button. This is for accessibility
+purposes, as it provides a text alternative for the icon button.

libs/components/src/tooltip/tooltip.directive.ts

@@ -16,6 +16,7 @@ import {
 import { TooltipPositionIdentifier, tooltipPositions } from "./tooltip-positions";
 import { TooltipComponent, TOOLTIP_DATA } from "./tooltip.component";
 
+export const TOOLTIP_DELAY_MS = 800;
 /**
  * Directive to add a tooltip to any element. The tooltip content is provided via the `bitTooltip` input.
  * The position of the tooltip can be set via the `tooltipPosition` input. Default position is "above-center".
@@ -85,7 +86,7 @@ export class TooltipDirective implements OnInit {
     this.isVisible.set(false);
   };
 
-  private showTooltip = () => {
+  protected showTooltip = () => {
     if (!this.overlayRef) {
       this.overlayRef = this.overlay.create({
         ...this.defaultPopoverConfig,
@@ -94,14 +95,17 @@ export class TooltipDirective implements OnInit {
 
       this.overlayRef.attach(this.tooltipPortal);
     }
-    this.isVisible.set(true);
+
+    setTimeout(() => {
+      this.isVisible.set(true);
+    }, TOOLTIP_DELAY_MS);
   };
 
-  private hideTooltip = () => {
+  protected hideTooltip = () => {
     this.destroyTooltip();
   };
 
-  private readonly resolvedDescribedByIds = computed(() => {
+  protected readonly resolvedDescribedByIds = computed(() => {
     if (this.addTooltipToDescribedby()) {
       if (this.currentDescribedByIds) {
         return `${this.currentDescribedByIds || ""} ${this.tooltipId}`;

libs/components/src/tooltip/tooltip.spec.ts

@@ -6,11 +6,11 @@ import {
 } from "@angular/cdk/overlay";
 import { ComponentPortal } from "@angular/cdk/portal";
 import { Component } from "@angular/core";
-import { ComponentFixture, TestBed } from "@angular/core/testing";
+import { ComponentFixture, TestBed, fakeAsync, tick } from "@angular/core/testing";
 import { By } from "@angular/platform-browser";
 import { Observable, Subject } from "rxjs";
 
-import { TooltipDirective } from "./tooltip.directive";
+import { TooltipDirective, TOOLTIP_DELAY_MS } from "./tooltip.directive";
 
 // FIXME(https://bitwarden.atlassian.net/browse/CL-764): Migrate to OnPush
 // eslint-disable-next-line @angular-eslint/prefer-on-push-component-change-detection
@@ -90,23 +90,25 @@ describe("TooltipDirective (visibility only)", () => {
     return hostDE.injector.get(TooltipDirective);
   }
 
-  it("sets isVisible to true on mouseenter", () => {
+  it("sets isVisible to true on mouseenter", fakeAsync(() => {
     const button: HTMLButtonElement = fixture.debugElement.query(By.css("button")).nativeElement;
     const directive = getDirective();
 
     const isVisible = (directive as unknown as { isVisible: () => boolean }).isVisible;
 
     button.dispatchEvent(new Event("mouseenter"));
+    tick(TOOLTIP_DELAY_MS);
     expect(isVisible()).toBe(true);
-  });
+  }));
 
-  it("sets isVisible to true on focus", () => {
+  it("sets isVisible to true on focus", fakeAsync(() => {
     const button: HTMLButtonElement = fixture.debugElement.query(By.css("button")).nativeElement;
     const directive = getDirective();
 
     const isVisible = (directive as unknown as { isVisible: () => boolean }).isVisible;
 
     button.dispatchEvent(new Event("focus"));
+    tick(TOOLTIP_DELAY_MS);
     expect(isVisible()).toBe(true);
-  });
+  }));
 });

libs/vault/src/components/carousel/carousel.component.html

@@ -12,10 +12,9 @@
       bitIconButton="bwi-angle-left"
       class="tw-size-6 tw-p-0 tw-flex tw-items-center tw-justify-center"
       size="small"
-      [attr.label]="'back' | i18n"
       (click)="prevSlide()"
       [disabled]="selectedIndex <= 0"
-      appA11yTitle="{{ 'back' | i18n }}"
+      label="{{ 'back' | i18n }}"
     ></button>
     <div
       class="tw-w-full tw-flex tw-gap-2 tw-justify-center tw-mt-auto"
@@ -34,11 +33,10 @@
       type="button"
       bitIconButton="bwi-angle-right"
       class="tw-size-6 tw-p-0 tw-flex tw-items-center tw-justify-center"
-      [attr.label]="'next' | i18n"
       size="small"
       (click)="nextSlide()"
       [disabled]="selectedIndex >= slides.length - 1"
-      appA11yTitle="{{ 'next' | i18n }}"
+      label="{{ 'next' | i18n }}"
     ></button>
   </div>
   <div class="tw-absolute tw-invisible" #tempSlideContainer *ngIf="minHeight === null">