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{"version":3,"file":"tooltip.js","sources":["../../../../../../src/material/tooltip/tooltip-animations.ts","../../../../../../src/material/tooltip/tooltip.ts","../../../../../../src/material/tooltip/tooltip-module.ts","../../../../../../src/material/tooltip/public-api.ts","../../../../../../src/material/tooltip/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {\n animate,\n AnimationTriggerMetadata,\n keyframes,\n state,\n style,\n transition,\n trigger,\n} from '@angular/animations';\n\n/**\n * Animations used by MatTooltip.\n * @docs-private\n */\nexport const matTooltipAnimations: {\n readonly tooltipState: AnimationTriggerMetadata;\n} = {\n /** Animation that transitions a tooltip in and out. */\n tooltipState: trigger('state', [\n state('initial, void, hidden', style({opacity: 0, transform: 'scale(0)'})),\n state('visible', style({transform: 'scale(1)'})),\n transition('* => visible', animate('200ms cubic-bezier(0, 0, 0.2, 1)', keyframes([\n style({opacity: 0, transform: 'scale(0)', offset: 0}),\n style({opacity: 0.5, transform: 'scale(0.99)', offset: 0.5}),\n style({opacity: 1, transform: 'scale(1)', offset: 1})\n ]))),\n transition('* => hidden', animate('100ms cubic-bezier(0, 0, 0.2, 1)', style({opacity: 0}))),\n ])\n};\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {AnimationEvent} from '@angular/animations';\nimport {AriaDescriber, FocusMonitor} from '@angular/cdk/a11y';\nimport {Directionality} from '@angular/cdk/bidi';\nimport {BooleanInput, coerceBooleanProperty, NumberInput} from '@angular/cdk/coercion';\nimport {ESCAPE, hasModifierKey} from '@angular/cdk/keycodes';\nimport {BreakpointObserver, Breakpoints, BreakpointState} from '@angular/cdk/layout';\nimport {\n FlexibleConnectedPositionStrategy,\n HorizontalConnectionPos,\n OriginConnectionPosition,\n Overlay,\n OverlayConnectionPosition,\n OverlayRef,\n ScrollStrategy,\n VerticalConnectionPos,\n} from '@angular/cdk/overlay';\nimport {Platform, normalizePassiveListenerOptions} from '@angular/cdk/platform';\nimport {ComponentPortal} from '@angular/cdk/portal';\nimport {ScrollDispatcher} from '@angular/cdk/scrolling';\nimport {\n ChangeDetectionStrategy,\n ChangeDetectorRef,\n Component,\n Directive,\n ElementRef,\n Inject,\n InjectionToken,\n Input,\n NgZone,\n OnDestroy,\n Optional,\n ViewContainerRef,\n ViewEncapsulation,\n AfterViewInit,\n} from '@angular/core';\nimport {DOCUMENT} from '@angular/common';\nimport {Observable, Subject} from 'rxjs';\nimport {take, takeUntil} from 'rxjs/operators';\n\nimport {matTooltipAnimations} from './tooltip-animations';\n\n\n/** Possible positions for a tooltip. */\nexport type TooltipPosition = 'left' | 'right' | 'above' | 'below' | 'before' | 'after';\n\n/**\n * Options for how the tooltip trigger should handle touch gestures.\n * See `MatTooltip.touchGestures` for more information.\n */\nexport type TooltipTouchGestures = 'auto' | 'on' | 'off';\n\n/** Possible visibility states of a tooltip. */\nexport type TooltipVisibility = 'initial' | 'visible' | 'hidden';\n\n/** Time in ms to throttle repositioning after scroll events. */\nexport const SCROLL_THROTTLE_MS = 20;\n\n/** CSS class that will be attached to the overlay panel. */\nexport const TOOLTIP_PANEL_CLASS = 'mat-tooltip-panel';\n\n/** Options used to bind passive event listeners. */\nconst passiveListenerOptions = normalizePassiveListenerOptions({passive: true});\n\n/**\n * Time between the user putting the pointer on a tooltip\n * trigger and the long press event being fired.\n */\nconst LONGPRESS_DELAY = 500;\n\n/**\n * Creates an error to be thrown if the user supplied an invalid tooltip position.\n * @docs-private\n */\nexport function getMatTooltipInvalidPositionError(position: string) {\n return Error(`Tooltip position \"${position}\" is invalid.`);\n}\n\n/** Injection token that determines the scroll handling while a tooltip is visible. */\nexport const MAT_TOOLTIP_SCROLL_STRATEGY =\n new InjectionToken<() => ScrollStrategy>('mat-tooltip-scroll-strategy');\n\n/** @docs-private */\nexport function MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY(overlay: Overlay): () => ScrollStrategy {\n return () => overlay.scrollStrategies.reposition({scrollThrottle: SCROLL_THROTTLE_MS});\n}\n\n/** @docs-private */\nexport const MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY_PROVIDER = {\n provide: MAT_TOOLTIP_SCROLL_STRATEGY,\n deps: [Overlay],\n useFactory: MAT_TOOLTIP_SCROLL_STRATEGY_FACTORY,\n};\n\n/** Default `matTooltip` options that can be overridden. */\nexport interface MatTooltipDefaultOptions {\n showDelay: number;\n hideDelay: number;\n touchendHideDelay: number;\n touchGestures?: TooltipTouchGestures;\n position?: TooltipPosition;\n}\n\n/** Injection token to be used to override the default options for `matTooltip`. */\nexport const MAT_TOOLTIP_DEFAULT_OPTIONS =\n new InjectionToken<MatTooltipDefaultOptions>('mat-tooltip-default-options', {\n providedIn: 'root',\n factory: MAT_TOOLTIP_DEFAULT_OPTIONS_FACTORY\n });\n\n/** @docs-private */\nexport function MAT_TOOLTIP_DEFAULT_OPTIONS_FACTORY(): MatTooltipDefaultOptions {\n return {\n showDelay: 0,\n hideDelay: 0,\n touchendHideDelay: 1500,\n };\n}\n\n/**\n * Directive that attaches a material design tooltip to the host element. Animates the showing and\n * hiding of a tooltip provided position (defaults to below the element).\n *\n * https://material.io/design/components/tooltips.html\n */\n@Directive({\n selector: '[matTooltip]',\n exportAs: 'matTooltip',\n host: {\n 'class': 'mat-tooltip-trigger'\n }\n})\nexport class MatTooltip implements OnDestroy, AfterViewInit {\n _overlayRef: OverlayRef | null;\n _tooltipInstance: TooltipComponent | null;\n\n private _portal: ComponentPortal<TooltipComponent>;\n private _position: TooltipPosition = 'below';\n private _disabled: boolean = false;\n private _tooltipClass: string|string[]|Set<string>|{[key: string]: any};\n private _scrollStrategy: () => ScrollStrategy;\n private _viewInitialized = false;\n private _pointerExitEventsInitialized = false;\n\n /** Allows the user to define the position of the tooltip relative to the parent element */\n @Input('matTooltipPosition')\n get position(): TooltipPosition { return this._position; }\n set position(value: TooltipPosition) {\n if (value !== this._position) {\n this._position = value;\n\n if (this._overlayRef) {\n this._updatePosition();\n\n if (this._tooltipInstance) {\n this._tooltipInstance!.show(0);\n }\n\n this._overlayRef.updatePosition();\n }\n }\n }\n\n /** Disables the display of the tooltip. */\n @Input('matTooltipDisabled')\n get disabled(): boolean { return this._disabled; }\n set disabled(value) {\n this._disabled = coerceBooleanProperty(value);\n\n // If tooltip is disabled, hide immediately.\n if (this._disabled) {\n this.hide(0);\n } else {\n this._setupPointerEnterEventsIfNeeded();\n }\n }\n\n /** The default delay in ms before showing the tooltip after show is called */\n @Input('matTooltipShowDelay') showDelay: number = this._defaultOptions.showDelay;\n\n /** The default delay in ms before hiding the tooltip after hide is called */\n @Input('matTooltipHideDelay') hideDelay: number = this._defaultOptions.hideDelay;\n\n /**\n * How touch gestures should be handled by the tooltip. On touch devices the tooltip directive\n * uses a long press gesture to show and hide, however it can conflict with the native browser\n * gestures. To work around the conflict, Angular Material disables native gestures on the\n * trigger, but that might not be desirable on particular elements (e.g. inputs and draggable\n * elements). The different values for this option configure the touch event handling as follows:\n * - `auto` - Enables touch gestures for all elements, but tries to avoid conflicts with native\n * browser gestures on particular elements. In particular, it allows text selection on inputs\n * and textareas, and preserves the native browser dragging on elements marked as `draggable`.\n * - `on` - Enables touch gestures for all elements and disables native\n * browser gestures with no exceptions.\n * - `off` - Disables touch gestures. Note that this will prevent the tooltip from\n * showing on touch devices.\n */\n @Input('matTooltipTouchGestures') touchGestures: TooltipTouchGestures = 'auto';\n\n /** The message to be displayed in the tooltip */\n @Input('matTooltip')\n get message() { return this._message; }\n set message(value: string) {\n this._ariaDescriber.removeDescription(this._elementRef.nativeElement, this._message, 'tooltip');\n\n // If the message is not a string (e.g. number), convert it to a string and trim it.\n // Must convert with `String(value)`, not `${value}`, otherwise Closure Compiler optimises\n // away the string-conversion: https://github.com/angular/components/issues/20684\n this._message = value != null ? String(value).trim() : '';\n\n if (!this._message && this._isTooltipVisible()) {\n this.hide(0);\n } else {\n this._setupPointerEnterEventsIfNeeded();\n this._updateTooltipMessage();\n this._ngZone.runOutsideAngular(() => {\n // The `AriaDescriber` has some functionality that avoids adding a description if it's the\n // same as the `aria-label` of an element, however we can't know whether the tooltip trigger\n // has a data-bound `aria-label` or when it'll be set for the first time. We can avoid the\n // issue by deferring the description by a tick so Angular has time to set the `aria-label`.\n Promise.resolve().then(() => {\n this._ariaDescriber.describe(this._elementRef.nativeElement, this.message, 'tooltip');\n });\n });\n }\n }\n private _message = '';\n\n /** Classes to be passed to the tooltip. Supports the same syntax as `ngClass`. */\n @Input('matTooltipClass')\n get tooltipClass() { return this._tooltipClass; }\n set tooltipClass(value: string|string[]|Set<string>|{[key: string]: any}) {\n this._tooltipClass = value;\n if (this._tooltipInstance) {\n this._setTooltipClass(this._tooltipClass);\n }\n }\n\n /** Manually-bound passive event listeners. */\n private readonly _passiveListeners:\n (readonly [string, EventListenerOrEventListenerObject])[] = [];\n\n /**\n * Reference to the current document.\n * @breaking-change 11.0.0 Remove `| null` typing for `document`.\n */\n private _document: Document | null;\n\n /** Timer started at the last `touchstart` event. */\n private _touchstartTimeout: number;\n\n /** Emits when the component is destroyed. */\n private readonly _destroyed = new Subject<void>();\n\n constructor(\n private _overlay: Overlay,\n private _elementRef: ElementRef<HTMLElement>,\n private _scrollDispatcher: ScrollDispatcher,\n private _viewContainerRef: ViewContainerRef,\n private _ngZone: NgZone,\n private _platform: Platform,\n private _ariaDescriber: AriaDescriber,\n private _focusMonitor: FocusMonitor,\n @Inject(MAT_TOOLTIP_SCROLL_STRATEGY) scrollStrategy: any,\n @Optional() private _dir: Directionality,\n @Optional() @Inject(MAT_TOOLTIP_DEFAULT_OPTIONS)\n private _defaultOptions: MatTooltipDefaultOptions,\n\n /** @breaking-change 11.0.0 _document argument to become required. */\n @Inject(DOCUMENT) _document: any) {\n\n this._scrollStrategy = scrollStrategy;\n\n if (_defaultOptions) {\n if (_defaultOptions.position) {\n this.position = _defaultOptions.position;\n }\n\n if (_defaultOptions.touchGestures) {\n this.touchGestures = _defaultOptions.touchGestures;\n }\n }\n\n _ngZone.runOutsideAngular(() => {\n _elementRef.nativeElement.addEventListener('keydown', this._handleKeydown);\n });\n }\n\n ngAfterViewInit() {\n // This needs to happen after view init so the initial values for all inputs have been set.\n this._viewInitialized = true;\n this._setupPointerEnterEventsIfNeeded();\n\n this._focusMonitor.monitor(this._elementRef)\n .pipe(takeUntil(this._destroyed))\n .subscribe(origin => {\n // Note that the focus monitor runs outside the Angular zone.\n if (!origin) {\n this._ngZone.run(() => this.hide(0));\n } else if (origin === 'keyboard') {\n this._ngZone.run(() => this.show());\n }\n });\n }\n\n /**\n * Dispose the tooltip when destroyed.\n */\n ngOnDestroy() {\n const nativeElement = this._elementRef.nativeElement;\n\n clearTimeout(this._touchstartTimeout);\n\n if (this._overlayRef) {\n this._overlayRef.dispose();\n this._tooltipInstance = null;\n }\n\n // Clean up the event listeners set in the constructor\n nativeElement.removeEventListener('keydown', this._handleKeydown);\n this._passiveListeners.forEach(([event, listener]) => {\n nativeElement.removeEventListener(event, listener, passiveListenerOptions);\n });\n this._passiveListeners.length = 0;\n\n this._destroyed.next();\n this._destroyed.complete();\n\n this._ariaDescriber.removeDescription(nativeElement, this.message, 'tooltip');\n this._focusMonitor.stopMonitoring(nativeElement);\n }\n\n /** Shows the tooltip after the delay in ms, defaults to tooltip-delay-show or 0ms if no input */\n show(delay: number = this.showDelay): void {\n if (this.disabled || !this.message || (this._isTooltipVisible() &&\n !this._tooltipInstance!._showTimeoutId && !this._tooltipInstance!._hideTimeoutId)) {\n return;\n }\n\n const overlayRef = this._createOverlay();\n this._detach();\n this._portal = this._portal || new ComponentPortal(TooltipComponent, this._viewContainerRef);\n this._tooltipInstance = overlayRef.attach(this._portal).instance;\n this._tooltipInstance.afterHidden()\n .pipe(takeUntil(this._destroyed))\n .subscribe(() => this._detach());\n this._setTooltipClass(this._tooltipClass);\n this._updateTooltipMessage();\n this._tooltipInstance!.show(delay);\n }\n\n /** Hides the tooltip after the delay in ms, defaults to tooltip-delay-hide or 0ms if no input */\n hide(delay: number = this.hideDelay): void {\n if (this._tooltipInstance) {\n this._tooltipInstance.hide(delay);\n }\n }\n\n /** Shows/hides the tooltip */\n toggle(): void {\n this._isTooltipVisible() ? this.hide() : this.show();\n }\n\n /** Returns true if the tooltip is currently visible to the user */\n _isTooltipVisible(): boolean {\n return !!this._tooltipInstance && this._tooltipInstance.isVisible();\n }\n\n /**\n * Handles the keydown events on the host element.\n * Needs to be an arrow function so that we can use it in addEventListener.\n */\n private _handleKeydown = (event: KeyboardEvent) => {\n if (this._isTooltipVisible() && event.keyCode === ESCAPE && !hasModifierKey(event)) {\n event.preventDefault();\n event.stopPropagation();\n this._ngZone.run(() => this.hide(0));\n }\n }\n\n /** Create the overlay config and position strategy */\n private _createOverlay(): OverlayRef {\n if (this._overlayRef) {\n return this._overlayRef;\n }\n\n const scrollableAncestors =\n this._scrollDispatcher.getAncestorScrollContainers(this._elementRef);\n\n // Create connected position strategy that listens for scroll events to reposition.\n const strategy = this._overlay.position()\n .flexibleConnectedTo(this._elementRef)\n .withTransformOriginOn('.mat-tooltip')\n .withFlexibleDimensions(false)\n .withViewportMargin(8)\n .withScrollableContainers(scrollableAncestors);\n\n strategy.positionChanges.pipe(takeUntil(this._destroyed)).subscribe(change => {\n if (this._tooltipInstance) {\n if (change.scrollableViewProperties.isOverlayClipped && this._tooltipInstance.isVisible()) {\n // After position changes occur and the overlay is clipped by\n // a parent scrollable then close the tooltip.\n this._ngZone.run(() => this.hide(0));\n }\n }\n });\n\n this._overlayRef = this._overlay.create({\n direction: this._dir,\n positionStrategy: strategy,\n panelClass: TOOLTIP_PANEL_CLASS,\n scrollStrategy: this._scrollStrategy()\n });\n\n this._updatePosition();\n\n this._overlayRef.detachments()\n .pipe(takeUntil(this._destroyed))\n .subscribe(() => this._detach());\n\n return this._overlayRef;\n }\n\n /** Detaches the currently-attached tooltip. */\n private _detach() {\n if (this._overlayRef && this._overlayRef.hasAttached()) {\n this._overlayRef.detach();\n }\n\n this._tooltipInstance = null;\n }\n\n /** Updates the position of the current tooltip. */\n private _updatePosition() {\n const position =\n this._overlayRef!.getConfig().positionStrategy as FlexibleConnectedPositionStrategy;\n const origin = this._getOrigin();\n const overlay = this._getOverlayPosition();\n\n position.withPositions([\n {...origin.main, ...overlay.main},\n {...origin.fallback, ...overlay.fallback}\n ]);\n }\n\n /**\n * Returns the origin position and a fallback position based on the user's position preference.\n * The fallback position is the inverse of the origin (e.g. `'below' -> 'above'`).\n */\n _getOrigin(): {main: OriginConnectionPosition, fallback: OriginConnectionPosition} {\n const isLtr = !this._dir || this._dir.value == 'ltr';\n const position = this.position;\n let originPosition: OriginConnectionPosition;\n\n if (position == 'above' || position == 'below') {\n originPosition = {originX: 'center', originY: position == 'above' ? 'top' : 'bottom'};\n } else if (\n position == 'before' ||\n (position == 'left' && isLtr) ||\n (position == 'right' && !isLtr)) {\n originPosition = {originX: 'start', originY: 'center'};\n } else if (\n position == 'after' ||\n (position == 'right' && isLtr) ||\n (position == 'left' && !isLtr)) {\n originPosition = {originX: 'end', originY: 'center'};\n } else if (typeof ngDevMode === 'undefined' || ngDevMode) {\n throw getMatTooltipInvalidPositionError(position);\n }\n\n const {x, y} = this._invertPosition(originPosition!.originX, originPosition!.originY);\n\n return {\n main: originPosition!,\n fallback: {originX: x, originY: y}\n };\n }\n\n /** Returns the overlay position and a fallback position based on the user's preference */\n _getOverlayPosition(): {main: OverlayConnectionPosition, fallback: OverlayConnectionPosition} {\n const isLtr = !this._dir || this._dir.value == 'ltr';\n const position = this.position;\n let overlayPosition: OverlayConnectionPosition;\n\n if (position == 'above') {\n overlayPosition = {overlayX: 'center', overlayY: 'bottom'};\n } else if (position == 'below') {\n overlayPosition = {overlayX: 'center', overlayY: 'top'};\n } else if (\n position == 'before' ||\n (position == 'left' && isLtr) ||\n (position == 'right' && !isLtr)) {\n overlayPosition = {overlayX: 'end', overlayY: 'center'};\n } else if (\n position == 'after' ||\n (position == 'right' && isLtr) ||\n (position == 'left' && !isLtr)) {\n overlayPosition = {overlayX: 'start', overlayY: 'center'};\n } else if (typeof ngDevMode === 'undefined' || ngDevMode) {\n throw getMatTooltipInvalidPositionError(position);\n }\n\n const {x, y} = this._invertPosition(overlayPosition!.overlayX, overlayPosition!.overlayY);\n\n return {\n main: overlayPosition!,\n fallback: {overlayX: x, overlayY: y}\n };\n }\n\n /** Updates the tooltip message and repositions the overlay according to the new message length */\n private _updateTooltipMessage() {\n // Must wait for the message to be painted to the tooltip so that the overlay can properly\n // calculate the correct positioning based on the size of the text.\n if (this._tooltipInstance) {\n this._tooltipInstance.message = this.message;\n this._tooltipInstance._markForCheck();\n\n this._ngZone.onMicrotaskEmpty.pipe(\n take(1),\n takeUntil(this._destroyed)\n ).subscribe(() => {\n if (this._tooltipInstance) {\n this._overlayRef!.updatePosition();\n }\n });\n }\n }\n\n /** Updates the tooltip class */\n private _setTooltipClass(tooltipClass: string|string[]|Set<string>|{[key: string]: any}) {\n if (this._tooltipInstance) {\n this._tooltipInstance.tooltipClass = tooltipClass;\n this._tooltipInstance._markForCheck();\n }\n }\n\n /** Inverts an overlay position. */\n private _invertPosition(x: HorizontalConnectionPos, y: VerticalConnectionPos) {\n if (this.position === 'above' || this.position === 'below') {\n if (y === 'top') {\n y = 'bottom';\n } else if (y === 'bottom') {\n y = 'top';\n }\n } else {\n if (x === 'end') {\n x = 'start';\n } else if (x === 'start') {\n x = 'end';\n }\n }\n\n return {x, y};\n }\n\n /** Binds the pointer events to the tooltip trigger. */\n private _setupPointerEnterEventsIfNeeded() {\n // Optimization: Defer hooking up events if there's no message or the tooltip is disabled.\n if (this._disabled || !this.message || !this._viewInitialized ||\n this._passiveListeners.length) {\n return;\n }\n\n // The mouse events shouldn't be bound on mobile devices, because they can prevent the\n // first tap from firing its click event or can cause the tooltip to open for clicks.\n if (this._platformSupportsMouseEvents()) {\n this._passiveListeners\n .push(['mouseenter', () => {\n this._setupPointerExitEventsIfNeeded();\n this.show();\n }]);\n } else if (this.touchGestures !== 'off') {\n this._disableNativeGesturesIfNecessary();\n\n this._passiveListeners\n .push(['touchstart', () => {\n // Note that it's important that we don't `preventDefault` here,\n // because it can prevent click events from firing on the element.\n this._setupPointerExitEventsIfNeeded();\n clearTimeout(this._touchstartTimeout);\n this._touchstartTimeout = setTimeout(() => this.show(), LONGPRESS_DELAY);\n }]);\n }\n\n this._addListeners(this._passiveListeners);\n }\n\n private _setupPointerExitEventsIfNeeded() {\n if (this._pointerExitEventsInitialized) {\n return;\n }\n this._pointerExitEventsInitialized = true;\n\n const exitListeners: (readonly [string, EventListenerOrEventListenerObject])[] = [];\n if (this._platformSupportsMouseEvents()) {\n exitListeners.push(\n ['mouseleave', () => this.hide()],\n ['wheel', event => this._wheelListener(event as WheelEvent)]\n );\n } else if (this.touchGestures !== 'off') {\n this._disableNativeGesturesIfNecessary();\n const touchendListener = () => {\n clearTimeout(this._touchstartTimeout);\n this.hide(this._defaultOptions.touchendHideDelay);\n };\n\n exitListeners.push(\n ['touchend', touchendListener],\n ['touchcancel', touchendListener],\n );\n }\n\n this._addListeners(exitListeners);\n this._passiveListeners.push(...exitListeners);\n }\n\n private _addListeners(\n listeners: ReadonlyArray<readonly [string, EventListenerOrEventListenerObject]>) {\n listeners.forEach(([event, listener]) => {\n this._elementRef.nativeElement.addEventListener(event, listener, passiveListenerOptions);\n });\n }\n\n private _platformSupportsMouseEvents() {\n return !this._platform.IOS && !this._platform.ANDROID;\n }\n\n /** Listener for the `wheel` event on the element. */\n private _wheelListener(event: WheelEvent) {\n if (this._isTooltipVisible()) {\n // @breaking-change 11.0.0 Remove `|| document` once the document is a required param.\n const doc = this._document || document;\n const elementUnderPointer = doc.elementFromPoint(event.clientX, event.clientY);\n const element = this._elementRef.nativeElement;\n\n // On non-touch devices we depend on the `mouseleave` event to close the tooltip, but it\n // won't fire if the user scrolls away using the wheel without moving their cursor. We\n // work around it by finding the element under the user's cursor and closing the tooltip\n // if it's not the trigger.\n if (elementUnderPointer !== element && !element.contains(elementUnderPointer)) {\n this.hide();\n }\n }\n }\n\n /** Disables the native browser gestures, based on how the tooltip has been configured. */\n private _disableNativeGesturesIfNecessary() {\n const gestures = this.touchGestures;\n\n if (gestures !== 'off') {\n const element = this._elementRef.nativeElement;\n const style = element.style;\n\n // If gestures are set to `auto`, we don't disable text selection on inputs and\n // textareas, because it prevents the user from typing into them on iOS Safari.\n if (gestures === 'on' || (element.nodeName !== 'INPUT' && element.nodeName !== 'TEXTAREA')) {\n style.userSelect = (style as any).msUserSelect = style.webkitUserSelect =\n (style as any).MozUserSelect = 'none';\n }\n\n // If we have `auto` gestures and the element uses native HTML dragging,\n // we don't set `-webkit-user-drag` because it prevents the native behavior.\n if (gestures === 'on' || !element.draggable) {\n (style as any).webkitUserDrag = 'none';\n }\n\n style.touchAction = 'none';\n style.webkitTapHighlightColor = 'transparent';\n }\n }\n\n static ngAcceptInputType_disabled: BooleanInput;\n static ngAcceptInputType_hideDelay: NumberInput;\n static ngAcceptInputType_showDelay: NumberInput;\n}\n\n/**\n * Internal component that wraps the tooltip's content.\n * @docs-private\n */\n@Component({\n selector: 'mat-tooltip-component',\n templateUrl: 'tooltip.html',\n styleUrls: ['tooltip.css'],\n encapsulation: ViewEncapsulation.None,\n changeDetection: ChangeDetectionStrategy.OnPush,\n animations: [matTooltipAnimations.tooltipState],\n host: {\n // Forces the element to have a layout in IE and Edge. This fixes issues where the element\n // won't be rendered if the animations are disabled or there is no web animations polyfill.\n '[style.zoom]': '_visibility === \"visible\" ? 1 : null',\n '(body:click)': 'this._handleBodyInteraction()',\n '(body:auxclick)': 'this._handleBodyInteraction()',\n 'aria-hidden': 'true',\n }\n})\nexport class TooltipComponent implements OnDestroy {\n /** Message to display in the tooltip */\n message: string;\n\n /** Classes to be added to the tooltip. 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