All files / lib/internal/tooltip tooltip.directive.ts

96.41% Statements 215/223
92.45% Branches 49/53
100% Functions 13/13
96.41% Lines 215/223

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 2241x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 28x 28x 28x 28x 28x 28x 1x 1x 7399x 7399x 7399x 1x 1x 238x 238x 238x 1x 1x 1x 1x 1x 1x 9031x 9031x 9031x 9031x 1x 1x 10x 10x 10x 10x 10x 1x 1x 26727x 26727x 26727x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 8586x 8586x 8586x 8586x 8586x 8586x 8586x 8586x 8586x 8586x 8586x 8586x 67x 8586x 8586x 8586x 8586x 1x 1x 1x 32656x 9031x 9031x 9031x 9031x 2964x 2964x 7545x 55x 55x 55x 6012x 6012x 5640x 5640x 9031x 9031x 9031x 32656x 32656x 9031x 32656x 32656x 1x 1x 1x 1813x 1813x 1x 1x 1x 18952x 18952x 18952x 18952x 18952x 1590x 17362x 18952x 1x 1x 1x 9031x 9031x 9031x 9031x 9031x       9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 9031x 1x 1x 1x 18062x 18062x 18062x 18062x 18062x 18062x 18062x 18062x 18062x 18062x 18062x 1518x 890x 890x 890x 890x 50x 840x 890x 890x 890x 18062x 18062x 18062x 18062x 18062x 16594x 1468x 18062x 18062x 18062x 18062x 18062x 18062x 1436x 1436x 1436x           1436x 1436x 1436x 1434x 2x 2x 1436x 1436x 18062x 1x  
import {
  ComponentRef,
  Directive,
  ElementRef,
  Input,
  OnChanges,
  OnDestroy,
  Optional,
  SimpleChange,
  SimpleChanges,
  ViewContainerRef,
} from '@angular/core';
 
import { createWidgetKeySet } from '../../utils/utilities';
 
import { ElementInsertionContextService } from '../element-insertion-context.service';
import { OverlayContainerComponent } from '../overlay-container/overlay-container.component';
import { ConnectType, TooltipComponent } from './tooltip.component';
 
const ARIA_DESCRIBEDBY = 'aria-describedby';
const ARIA_LABELLEDBY = 'aria-labelledby';
 
@Directive({
  selector: '[data-gc-tooltip]',
  standalone: false,
})
export class TooltipDirective implements OnDestroy, OnChanges {
  @Input('data-gc-tooltip-connect-as')
  public connectAs: ConnectType = ARIA_DESCRIBEDBY;
 
  @Input('data-gc-tooltip-testid')
  public set testId(value: string) {
    (this.componentRef.location.nativeElement as HTMLElement).setAttribute(
      'data-testid',
      value,
    );
  }
 
  @Input('data-gc-tooltip-offset')
  public set offset(value: number) {
    this.componentRef.setInput('offset', value);
  }
 
  @Input('data-gc-tooltip-orientation')
  public set orientation(value: 'vertical' | 'horizontal') {
    this.componentRef.setInput('orientation', value);
  }
 
  /**
   * Set the text of the tooltip.
   * Tooltip is not created if the text is empty.
   */
  @Input({ alias: 'data-gc-tooltip', required: true })
  public set text(value: string) {
    this._text = value;
    this.componentRef.setInput('text', value);
  }
 
  @Input('data-gc-tooltip-focus-anchor')
  public set focusAnchor(
    value: ElementRef<HTMLElement> | HTMLElement | undefined,
  ) {
    this.componentRef.setInput('focusAnchor', value);
  }
 
  @Input('data-gc-tooltip-permit')
  public set permitTooltip(value: () => boolean) {
    this.componentRef.setInput('permitTooltip', value);
  }
 
  /** @ignore */
  private readonly _widgetKeys = createWidgetKeySet('gc-tooltip');
 
  /** @ignore */
  private _text = '';
 
  /** @ignore */
  private readonly componentRef: ComponentRef<TooltipComponent>;
 
  /** @ignore */
  private readonly parentElement: HTMLElement;
 
  constructor(
    private readonly viewRef: ViewContainerRef,
    @Optional() eic: ElementInsertionContextService | null,
    @Optional() parent: OverlayContainerComponent | null,
  ) {
    this.componentRef = this.viewRef.createComponent(TooltipComponent);
    this.componentRef.setInput('tooltipId', this._widgetKeys.baseKey);
    this.componentRef.setInput(
      'tooltipOwner',
      this.viewRef.element.nativeElement,
    );
    let zIndex = 1000;
    if (parent) {
      zIndex = parent.zIndex + 900;
    }
    this.componentRef.setInput('zIndex', zIndex);
    this.parentElement = eic?.parent ?? document.body;
  }
 
  /** @ignore */
  ngOnChanges(changes: SimpleChanges): void {
    if ('text' in changes) {
      const change = changes.text;
      const componentAttached =
        change.firstChange || change.previousValue !== '';
      if (change.currentValue === '' && componentAttached) {
        const componentIndex = this.viewRef.indexOf(this.componentRef.hostView);
        this.viewRef.detach(componentIndex);
      } else if (change.currentValue && !componentAttached) {
        this.viewRef.insert(this.componentRef.hostView);
        this.parentElement.appendChild(
          this.componentRef.location.nativeElement,
        );
      } else if (change.firstChange) {
        this.parentElement.appendChild(
          this.componentRef.location.nativeElement,
        );
      }
    }
 
    if ('connectAs' in changes || 'text' in changes) {
      this.updateAriaAttributes(changes.connectAs, changes.text);
    }
  }
 
  /** @ignore */
  ngOnDestroy(): void {
    this.componentRef.destroy();
  }
 
  /** @ignore */
  private determineAriaAttributeValue(
    attribute: Exclude<ConnectType, 'none'>,
    connectAs: ConnectType,
    text: string,
  ): string | undefined {
    return connectAs === attribute && text !== ''
      ? this.componentRef.instance.tooltipContentId
      : undefined;
  }
 
  /** @ignore */
  private updateAriaAttributes(
    connectAs: SimpleChange | undefined,
    text: SimpleChange | undefined,
  ) {
    const tooltipOwner = this.viewRef.element;
    if (!(tooltipOwner.nativeElement instanceof Element)) {
      console.error('Tooltip owner element is not defined.');
      return;
    }
    const tooltipOwnerElement = tooltipOwner.nativeElement;
 
    this.updateAriaAttribute(
      tooltipOwnerElement,
      ARIA_DESCRIBEDBY,
      connectAs,
      text,
    );
    this.updateAriaAttribute(
      tooltipOwnerElement,
      ARIA_LABELLEDBY,
      connectAs,
      text,
    );
  }
 
  /** @ignore */
  private updateAriaAttribute(
    element: Element,
    attribute: typeof ARIA_DESCRIBEDBY | typeof ARIA_LABELLEDBY,
    connectAsChange: SimpleChange | undefined,
    textChange: SimpleChange | undefined,
  ) {
    type ConnectAsPropType = typeof this.connectAs;
    type TextPropType = typeof this.text;
 
    let expectedPreviousValue: string | undefined = undefined;
    if (
      connectAsChange?.firstChange !== true &&
      textChange?.firstChange !== true
    ) {
      expectedPreviousValue = this.determineAriaAttributeValue(
        attribute,
        connectAsChange !== undefined
          ? (connectAsChange.previousValue as ConnectAsPropType)
          : this.connectAs,
        textChange !== undefined
          ? (textChange.previousValue as TextPropType)
          : this._text,
      );
    }
    const newValue = this.determineAriaAttributeValue(
      attribute,
      connectAsChange !== undefined
        ? (connectAsChange.currentValue as ConnectAsPropType)
        : this.connectAs,
      textChange !== undefined
        ? (textChange.currentValue as TextPropType)
        : this._text,
    );
 
    if (expectedPreviousValue !== newValue) {
      const presentValue = element.getAttribute(attribute) ?? undefined;
      if (presentValue !== expectedPreviousValue) {
        console.error(
          `The value of the '${attribute}' attribute was modified externally / outside of the tooltip.`,
          `Expected: "${expectedPreviousValue ?? '<not present>'}"`,
          `Found: "${presentValue ?? '<not present>'}"`,
        );
        throw new Error('unexpected modification of tooltip aria attributes');
      }
 
      if (newValue) {
        element.setAttribute(attribute, newValue);
      } else {
        element.removeAttribute(attribute);
      }
    }
  }
}