import * as i1 from '@angular/cdk/scrolling'; import { ScrollDispatcher, ViewportRuler, ScrollingModule } from '@angular/cdk/scrolling'; export { CdkScrollable, ScrollDispatcher, ViewportRuler } from '@angular/cdk/scrolling'; import * as i1$1 from '@angular/common'; import { DOCUMENT, Location } from '@angular/common'; import * as i0 from '@angular/core'; import { Injectable, NgZone, Inject, Optional, ElementRef, ApplicationRef, ComponentFactoryResolver, Injector, InjectionToken, Directive, EventEmitter, TemplateRef, ViewContainerRef, Input, Output, NgModule } from '@angular/core'; import { coerceCssPixelValue, coerceArray, coerceBooleanProperty } from '@angular/cdk/coercion'; import * as i2 from '@angular/cdk/platform'; import { supportsScrollBehavior, _getEventTarget, Platform, _isTestEnvironment } from '@angular/cdk/platform'; import { Directionality, BidiModule } from '@angular/cdk/bidi'; import { DomPortalOutlet, TemplatePortal, PortalModule } from '@angular/cdk/portal'; import { Subject, Subscription, merge } from 'rxjs'; import { take, takeUntil, takeWhile } from 'rxjs/operators'; import { ESCAPE, hasModifierKey } from '@angular/cdk/keycodes'; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ const scrollBehaviorSupported = supportsScrollBehavior(); /** * Strategy that will prevent the user from scrolling while the overlay is visible. */ class BlockScrollStrategy { constructor(_viewportRuler, document) { this._viewportRuler = _viewportRuler; this._previousHTMLStyles = { top: '', left: '' }; this._isEnabled = false; this._document = document; } /** Attaches this scroll strategy to an overlay. */ attach() { } /** Blocks page-level scroll while the attached overlay is open. */ enable() { if (this._canBeEnabled()) { const root = this._document.documentElement; this._previousScrollPosition = this._viewportRuler.getViewportScrollPosition(); // Cache the previous inline styles in case the user had set them. this._previousHTMLStyles.left = root.style.left || ''; this._previousHTMLStyles.top = root.style.top || ''; // Note: we're using the `html` node, instead of the `body`, because the `body` may // have the user agent margin, whereas the `html` is guaranteed not to have one. root.style.left = coerceCssPixelValue(-this._previousScrollPosition.left); root.style.top = coerceCssPixelValue(-this._previousScrollPosition.top); root.classList.add('cdk-global-scrollblock'); this._isEnabled = true; } } /** Unblocks page-level scroll while the attached overlay is open. */ disable() { if (this._isEnabled) { const html = this._document.documentElement; const body = this._document.body; const htmlStyle = html.style; const bodyStyle = body.style; const previousHtmlScrollBehavior = htmlStyle.scrollBehavior || ''; const previousBodyScrollBehavior = bodyStyle.scrollBehavior || ''; this._isEnabled = false; htmlStyle.left = this._previousHTMLStyles.left; htmlStyle.top = this._previousHTMLStyles.top; html.classList.remove('cdk-global-scrollblock'); // Disable user-defined smooth scrolling temporarily while we restore the scroll position. // See https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-behavior // Note that we don't mutate the property if the browser doesn't support `scroll-behavior`, // because it can throw off feature detections in `supportsScrollBehavior` which // checks for `'scrollBehavior' in documentElement.style`. if (scrollBehaviorSupported) { htmlStyle.scrollBehavior = bodyStyle.scrollBehavior = 'auto'; } window.scroll(this._previousScrollPosition.left, this._previousScrollPosition.top); if (scrollBehaviorSupported) { htmlStyle.scrollBehavior = previousHtmlScrollBehavior; bodyStyle.scrollBehavior = previousBodyScrollBehavior; } } } _canBeEnabled() { // Since the scroll strategies can't be singletons, we have to use a global CSS class // (`cdk-global-scrollblock`) to make sure that we don't try to disable global // scrolling multiple times. const html = this._document.documentElement; if (html.classList.contains('cdk-global-scrollblock') || this._isEnabled) { return false; } const body = this._document.body; const viewport = this._viewportRuler.getViewportSize(); return body.scrollHeight > viewport.height || body.scrollWidth > viewport.width; } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Returns an error to be thrown when attempting to attach an already-attached scroll strategy. */ function getMatScrollStrategyAlreadyAttachedError() { return Error(`Scroll strategy has already been attached.`); } /** * Strategy that will close the overlay as soon as the user starts scrolling. */ class CloseScrollStrategy { constructor(_scrollDispatcher, _ngZone, _viewportRuler, _config) { this._scrollDispatcher = _scrollDispatcher; this._ngZone = _ngZone; this._viewportRuler = _viewportRuler; this._config = _config; this._scrollSubscription = null; /** Detaches the overlay ref and disables the scroll strategy. */ this._detach = () => { this.disable(); if (this._overlayRef.hasAttached()) { this._ngZone.run(() => this._overlayRef.detach()); } }; } /** Attaches this scroll strategy to an overlay. */ attach(overlayRef) { if (this._overlayRef && (typeof ngDevMode === 'undefined' || ngDevMode)) { throw getMatScrollStrategyAlreadyAttachedError(); } this._overlayRef = overlayRef; } /** Enables the closing of the attached overlay on scroll. */ enable() { if (this._scrollSubscription) { return; } const stream = this._scrollDispatcher.scrolled(0); if (this._config && this._config.threshold && this._config.threshold > 1) { this._initialScrollPosition = this._viewportRuler.getViewportScrollPosition().top; this._scrollSubscription = stream.subscribe(() => { const scrollPosition = this._viewportRuler.getViewportScrollPosition().top; if (Math.abs(scrollPosition - this._initialScrollPosition) > this._config.threshold) { this._detach(); } else { this._overlayRef.updatePosition(); } }); } else { this._scrollSubscription = stream.subscribe(this._detach); } } /** Disables the closing the attached overlay on scroll. */ disable() { if (this._scrollSubscription) { this._scrollSubscription.unsubscribe(); this._scrollSubscription = null; } } detach() { this.disable(); this._overlayRef = null; } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Scroll strategy that doesn't do anything. */ class NoopScrollStrategy { /** Does nothing, as this scroll strategy is a no-op. */ enable() { } /** Does nothing, as this scroll strategy is a no-op. */ disable() { } /** Does nothing, as this scroll strategy is a no-op. */ attach() { } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ // TODO(jelbourn): move this to live with the rest of the scrolling code // TODO(jelbourn): someday replace this with IntersectionObservers /** * Gets whether an element is scrolled outside of view by any of its parent scrolling containers. * @param element Dimensions of the element (from getBoundingClientRect) * @param scrollContainers Dimensions of element's scrolling containers (from getBoundingClientRect) * @returns Whether the element is scrolled out of view * @docs-private */ function isElementScrolledOutsideView(element, scrollContainers) { return scrollContainers.some(containerBounds => { const outsideAbove = element.bottom < containerBounds.top; const outsideBelow = element.top > containerBounds.bottom; const outsideLeft = element.right < containerBounds.left; const outsideRight = element.left > containerBounds.right; return outsideAbove || outsideBelow || outsideLeft || outsideRight; }); } /** * Gets whether an element is clipped by any of its scrolling containers. * @param element Dimensions of the element (from getBoundingClientRect) * @param scrollContainers Dimensions of element's scrolling containers (from getBoundingClientRect) * @returns Whether the element is clipped * @docs-private */ function isElementClippedByScrolling(element, scrollContainers) { return scrollContainers.some(scrollContainerRect => { const clippedAbove = element.top < scrollContainerRect.top; const clippedBelow = element.bottom > scrollContainerRect.bottom; const clippedLeft = element.left < scrollContainerRect.left; const clippedRight = element.right > scrollContainerRect.right; return clippedAbove || clippedBelow || clippedLeft || clippedRight; }); } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Strategy that will update the element position as the user is scrolling. */ class RepositionScrollStrategy { constructor(_scrollDispatcher, _viewportRuler, _ngZone, _config) { this._scrollDispatcher = _scrollDispatcher; this._viewportRuler = _viewportRuler; this._ngZone = _ngZone; this._config = _config; this._scrollSubscription = null; } /** Attaches this scroll strategy to an overlay. */ attach(overlayRef) { if (this._overlayRef && (typeof ngDevMode === 'undefined' || ngDevMode)) { throw getMatScrollStrategyAlreadyAttachedError(); } this._overlayRef = overlayRef; } /** Enables repositioning of the attached overlay on scroll. */ enable() { if (!this._scrollSubscription) { const throttle = this._config ? this._config.scrollThrottle : 0; this._scrollSubscription = this._scrollDispatcher.scrolled(throttle).subscribe(() => { this._overlayRef.updatePosition(); // TODO(crisbeto): make `close` on by default once all components can handle it. if (this._config && this._config.autoClose) { const overlayRect = this._overlayRef.overlayElement.getBoundingClientRect(); const { width, height } = this._viewportRuler.getViewportSize(); // TODO(crisbeto): include all ancestor scroll containers here once // we have a way of exposing the trigger element to the scroll strategy. const parentRects = [{ width, height, bottom: height, right: width, top: 0, left: 0 }]; if (isElementScrolledOutsideView(overlayRect, parentRects)) { this.disable(); this._ngZone.run(() => this._overlayRef.detach()); } } }); } } /** Disables repositioning of the attached overlay on scroll. */ disable() { if (this._scrollSubscription) { this._scrollSubscription.unsubscribe(); this._scrollSubscription = null; } } detach() { this.disable(); this._overlayRef = null; } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Options for how an overlay will handle scrolling. * * Users can provide a custom value for `ScrollStrategyOptions` to replace the default * behaviors. This class primarily acts as a factory for ScrollStrategy instances. */ class ScrollStrategyOptions { constructor(_scrollDispatcher, _viewportRuler, _ngZone, document) { this._scrollDispatcher = _scrollDispatcher; this._viewportRuler = _viewportRuler; this._ngZone = _ngZone; /** Do nothing on scroll. */ this.noop = () => new NoopScrollStrategy(); /** * Close the overlay as soon as the user scrolls. * @param config Configuration to be used inside the scroll strategy. */ this.close = (config) => new CloseScrollStrategy(this._scrollDispatcher, this._ngZone, this._viewportRuler, config); /** Block scrolling. */ this.block = () => new BlockScrollStrategy(this._viewportRuler, this._document); /** * Update the overlay's position on scroll. * @param config Configuration to be used inside the scroll strategy. * Allows debouncing the reposition calls. */ this.reposition = (config) => new RepositionScrollStrategy(this._scrollDispatcher, this._viewportRuler, this._ngZone, config); this._document = document; } } ScrollStrategyOptions.ɵprov = i0.ɵɵdefineInjectable({ factory: function ScrollStrategyOptions_Factory() { return new ScrollStrategyOptions(i0.ɵɵinject(i1.ScrollDispatcher), i0.ɵɵinject(i1.ViewportRuler), i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i1$1.DOCUMENT)); }, token: ScrollStrategyOptions, providedIn: "root" }); ScrollStrategyOptions.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; ScrollStrategyOptions.ctorParameters = () => [ { type: ScrollDispatcher }, { type: ViewportRuler }, { type: NgZone }, { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Initial configuration used when creating an overlay. */ class OverlayConfig { constructor(config) { /** Strategy to be used when handling scroll events while the overlay is open. */ this.scrollStrategy = new NoopScrollStrategy(); /** Custom class to add to the overlay pane. */ this.panelClass = ''; /** Whether the overlay has a backdrop. */ this.hasBackdrop = false; /** Custom class to add to the backdrop */ this.backdropClass = 'cdk-overlay-dark-backdrop'; /** * Whether the overlay should be disposed of when the user goes backwards/forwards in history. * Note that this usually doesn't include clicking on links (unless the user is using * the `HashLocationStrategy`). */ this.disposeOnNavigation = false; if (config) { // Use `Iterable` instead of `Array` because TypeScript, as of 3.6.3, // loses the array generic type in the `for of`. But we *also* have to use `Array` because // typescript won't iterate over an `Iterable` unless you compile with `--downlevelIteration` const configKeys = Object.keys(config); for (const key of configKeys) { if (config[key] !== undefined) { // TypeScript, as of version 3.5, sees the left-hand-side of this expression // as "I don't know *which* key this is, so the only valid value is the intersection // of all the posible values." In this case, that happens to be `undefined`. TypeScript // is not smart enough to see that the right-hand-side is actually an access of the same // exact type with the same exact key, meaning that the value type must be identical. // So we use `any` to work around this. this[key] = config[key]; } } } } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** The points of the origin element and the overlay element to connect. */ class ConnectionPositionPair { constructor(origin, overlay, /** Offset along the X axis. */ offsetX, /** Offset along the Y axis. */ offsetY, /** Class(es) to be applied to the panel while this position is active. */ panelClass) { this.offsetX = offsetX; this.offsetY = offsetY; this.panelClass = panelClass; this.originX = origin.originX; this.originY = origin.originY; this.overlayX = overlay.overlayX; this.overlayY = overlay.overlayY; } } /** * Set of properties regarding the position of the origin and overlay relative to the viewport * with respect to the containing Scrollable elements. * * The overlay and origin are clipped if any part of their bounding client rectangle exceeds the * bounds of any one of the strategy's Scrollable's bounding client rectangle. * * The overlay and origin are outside view if there is no overlap between their bounding client * rectangle and any one of the strategy's Scrollable's bounding client rectangle. * * ----------- ----------- * | outside | | clipped | * | view | -------------------------- * | | | | | | * ---------- | ----------- | * -------------------------- | | * | | | Scrollable | * | | | | * | | -------------------------- * | Scrollable | * | | * -------------------------- * * @docs-private */ class ScrollingVisibility { } /** The change event emitted by the strategy when a fallback position is used. */ class ConnectedOverlayPositionChange { constructor( /** The position used as a result of this change. */ connectionPair, /** @docs-private */ scrollableViewProperties) { this.connectionPair = connectionPair; this.scrollableViewProperties = scrollableViewProperties; } } ConnectedOverlayPositionChange.ctorParameters = () => [ { type: ConnectionPositionPair }, { type: ScrollingVisibility, decorators: [{ type: Optional }] } ]; /** * Validates whether a vertical position property matches the expected values. * @param property Name of the property being validated. * @param value Value of the property being validated. * @docs-private */ function validateVerticalPosition(property, value) { if (value !== 'top' && value !== 'bottom' && value !== 'center') { throw Error(`ConnectedPosition: Invalid ${property} "${value}". ` + `Expected "top", "bottom" or "center".`); } } /** * Validates whether a horizontal position property matches the expected values. * @param property Name of the property being validated. * @param value Value of the property being validated. * @docs-private */ function validateHorizontalPosition(property, value) { if (value !== 'start' && value !== 'end' && value !== 'center') { throw Error(`ConnectedPosition: Invalid ${property} "${value}". ` + `Expected "start", "end" or "center".`); } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Service for dispatching events that land on the body to appropriate overlay ref, * if any. It maintains a list of attached overlays to determine best suited overlay based * on event target and order of overlay opens. */ class BaseOverlayDispatcher { constructor(document) { /** Currently attached overlays in the order they were attached. */ this._attachedOverlays = []; this._document = document; } ngOnDestroy() { this.detach(); } /** Add a new overlay to the list of attached overlay refs. */ add(overlayRef) { // Ensure that we don't get the same overlay multiple times. this.remove(overlayRef); this._attachedOverlays.push(overlayRef); } /** Remove an overlay from the list of attached overlay refs. */ remove(overlayRef) { const index = this._attachedOverlays.indexOf(overlayRef); if (index > -1) { this._attachedOverlays.splice(index, 1); } // Remove the global listener once there are no more overlays. if (this._attachedOverlays.length === 0) { this.detach(); } } } BaseOverlayDispatcher.ɵprov = i0.ɵɵdefineInjectable({ factory: function BaseOverlayDispatcher_Factory() { return new BaseOverlayDispatcher(i0.ɵɵinject(i1$1.DOCUMENT)); }, token: BaseOverlayDispatcher, providedIn: "root" }); BaseOverlayDispatcher.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; BaseOverlayDispatcher.ctorParameters = () => [ { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Service for dispatching keyboard events that land on the body to appropriate overlay ref, * if any. It maintains a list of attached overlays to determine best suited overlay based * on event target and order of overlay opens. */ class OverlayKeyboardDispatcher extends BaseOverlayDispatcher { constructor(document) { super(document); /** Keyboard event listener that will be attached to the body. */ this._keydownListener = (event) => { const overlays = this._attachedOverlays; for (let i = overlays.length - 1; i > -1; i--) { // Dispatch the keydown event to the top overlay which has subscribers to its keydown events. // We want to target the most recent overlay, rather than trying to match where the event came // from, because some components might open an overlay, but keep focus on a trigger element // (e.g. for select and autocomplete). We skip overlays without keydown event subscriptions, // because we don't want overlays that don't handle keyboard events to block the ones below // them that do. if (overlays[i]._keydownEvents.observers.length > 0) { overlays[i]._keydownEvents.next(event); break; } } }; } /** Add a new overlay to the list of attached overlay refs. */ add(overlayRef) { super.add(overlayRef); // Lazily start dispatcher once first overlay is added if (!this._isAttached) { this._document.body.addEventListener('keydown', this._keydownListener); this._isAttached = true; } } /** Detaches the global keyboard event listener. */ detach() { if (this._isAttached) { this._document.body.removeEventListener('keydown', this._keydownListener); this._isAttached = false; } } } OverlayKeyboardDispatcher.ɵprov = i0.ɵɵdefineInjectable({ factory: function OverlayKeyboardDispatcher_Factory() { return new OverlayKeyboardDispatcher(i0.ɵɵinject(i1$1.DOCUMENT)); }, token: OverlayKeyboardDispatcher, providedIn: "root" }); OverlayKeyboardDispatcher.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; OverlayKeyboardDispatcher.ctorParameters = () => [ { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Service for dispatching mouse click events that land on the body to appropriate overlay ref, * if any. It maintains a list of attached overlays to determine best suited overlay based * on event target and order of overlay opens. */ class OverlayOutsideClickDispatcher extends BaseOverlayDispatcher { constructor(document, _platform) { super(document); this._platform = _platform; this._cursorStyleIsSet = false; /** Store pointerdown event target to track origin of click. */ this._pointerDownListener = (event) => { this._pointerDownEventTarget = _getEventTarget(event); }; /** Click event listener that will be attached to the body propagate phase. */ this._clickListener = (event) => { const target = _getEventTarget(event); // In case of a click event, we want to check the origin of the click // (e.g. in case where a user starts a click inside the overlay and // releases the click outside of it). // This is done by using the event target of the preceding pointerdown event. // Every click event caused by a pointer device has a preceding pointerdown // event, unless the click was programmatically triggered (e.g. in a unit test). const origin = event.type === 'click' && this._pointerDownEventTarget ? this._pointerDownEventTarget : target; // Reset the stored pointerdown event target, to avoid having it interfere // in subsequent events. this._pointerDownEventTarget = null; // We copy the array because the original may be modified asynchronously if the // outsidePointerEvents listener decides to detach overlays resulting in index errors inside // the for loop. const overlays = this._attachedOverlays.slice(); // Dispatch the mouse event to the top overlay which has subscribers to its mouse events. // We want to target all overlays for which the click could be considered as outside click. // As soon as we reach an overlay for which the click is not outside click we break off // the loop. for (let i = overlays.length - 1; i > -1; i--) { const overlayRef = overlays[i]; if (overlayRef._outsidePointerEvents.observers.length < 1 || !overlayRef.hasAttached()) { continue; } // If it's a click inside the overlay, just break - we should do nothing // If it's an outside click (both origin and target of the click) dispatch the mouse event, // and proceed with the next overlay if (overlayRef.overlayElement.contains(target) || overlayRef.overlayElement.contains(origin)) { break; } overlayRef._outsidePointerEvents.next(event); } }; } /** Add a new overlay to the list of attached overlay refs. */ add(overlayRef) { super.add(overlayRef); // Safari on iOS does not generate click events for non-interactive // elements. However, we want to receive a click for any element outside // the overlay. We can force a "clickable" state by setting // `cursor: pointer` on the document body. See: // https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event#Safari_Mobile // https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariWebContent/HandlingEvents/HandlingEvents.html if (!this._isAttached) { const body = this._document.body; body.addEventListener('pointerdown', this._pointerDownListener, true); body.addEventListener('click', this._clickListener, true); body.addEventListener('auxclick', this._clickListener, true); body.addEventListener('contextmenu', this._clickListener, true); // click event is not fired on iOS. To make element "clickable" we are // setting the cursor to pointer if (this._platform.IOS && !this._cursorStyleIsSet) { this._cursorOriginalValue = body.style.cursor; body.style.cursor = 'pointer'; this._cursorStyleIsSet = true; } this._isAttached = true; } } /** Detaches the global keyboard event listener. */ detach() { if (this._isAttached) { const body = this._document.body; body.removeEventListener('pointerdown', this._pointerDownListener, true); body.removeEventListener('click', this._clickListener, true); body.removeEventListener('auxclick', this._clickListener, true); body.removeEventListener('contextmenu', this._clickListener, true); if (this._platform.IOS && this._cursorStyleIsSet) { body.style.cursor = this._cursorOriginalValue; this._cursorStyleIsSet = false; } this._isAttached = false; } } } OverlayOutsideClickDispatcher.ɵprov = i0.ɵɵdefineInjectable({ factory: function OverlayOutsideClickDispatcher_Factory() { return new OverlayOutsideClickDispatcher(i0.ɵɵinject(i1$1.DOCUMENT), i0.ɵɵinject(i2.Platform)); }, token: OverlayOutsideClickDispatcher, providedIn: "root" }); OverlayOutsideClickDispatcher.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; OverlayOutsideClickDispatcher.ctorParameters = () => [ { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: Platform } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Container inside which all overlays will render. */ class OverlayContainer { constructor(document, _platform) { this._platform = _platform; this._document = document; } ngOnDestroy() { const container = this._containerElement; if (container && container.parentNode) { container.parentNode.removeChild(container); } } /** * This method returns the overlay container element. It will lazily * create the element the first time it is called to facilitate using * the container in non-browser environments. * @returns the container element */ getContainerElement() { if (!this._containerElement) { this._createContainer(); } return this._containerElement; } /** * Create the overlay container element, which is simply a div * with the 'cdk-overlay-container' class on the document body. */ _createContainer() { const containerClass = 'cdk-overlay-container'; // TODO(crisbeto): remove the testing check once we have an overlay testing // module or Angular starts tearing down the testing `NgModule`. See: // https://github.com/angular/angular/issues/18831 if (this._platform.isBrowser || _isTestEnvironment()) { const oppositePlatformContainers = this._document.querySelectorAll(`.${containerClass}[platform="server"], ` + `.${containerClass}[platform="test"]`); // Remove any old containers from the opposite platform. // This can happen when transitioning from the server to the client. for (let i = 0; i < oppositePlatformContainers.length; i++) { oppositePlatformContainers[i].parentNode.removeChild(oppositePlatformContainers[i]); } } const container = this._document.createElement('div'); container.classList.add(containerClass); // A long time ago we kept adding new overlay containers whenever a new app was instantiated, // but at some point we added logic which clears the duplicate ones in order to avoid leaks. // The new logic was a little too aggressive since it was breaking some legitimate use cases. // To mitigate the problem we made it so that only containers from a different platform are // cleared, but the side-effect was that people started depending on the overly-aggressive // logic to clean up their tests for them. Until we can introduce an overlay-specific testing // module which does the cleanup, we try to detect that we're in a test environment and we // always clear the container. See #17006. // TODO(crisbeto): remove the test environment check once we have an overlay testing module. if (_isTestEnvironment()) { container.setAttribute('platform', 'test'); } else if (!this._platform.isBrowser) { container.setAttribute('platform', 'server'); } this._document.body.appendChild(container); this._containerElement = container; } } OverlayContainer.ɵprov = i0.ɵɵdefineInjectable({ factory: function OverlayContainer_Factory() { return new OverlayContainer(i0.ɵɵinject(i1$1.DOCUMENT), i0.ɵɵinject(i2.Platform)); }, token: OverlayContainer, providedIn: "root" }); OverlayContainer.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; OverlayContainer.ctorParameters = () => [ { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: Platform } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Reference to an overlay that has been created with the Overlay service. * Used to manipulate or dispose of said overlay. */ class OverlayRef { constructor(_portalOutlet, _host, _pane, _config, _ngZone, _keyboardDispatcher, _document, _location, _outsideClickDispatcher) { this._portalOutlet = _portalOutlet; this._host = _host; this._pane = _pane; this._config = _config; this._ngZone = _ngZone; this._keyboardDispatcher = _keyboardDispatcher; this._document = _document; this._location = _location; this._outsideClickDispatcher = _outsideClickDispatcher; this._backdropElement = null; this._backdropClick = new Subject(); this._attachments = new Subject(); this._detachments = new Subject(); this._locationChanges = Subscription.EMPTY; this._backdropClickHandler = (event) => this._backdropClick.next(event); /** Stream of keydown events dispatched to this overlay. */ this._keydownEvents = new Subject(); /** Stream of mouse outside events dispatched to this overlay. */ this._outsidePointerEvents = new Subject(); if (_config.scrollStrategy) { this._scrollStrategy = _config.scrollStrategy; this._scrollStrategy.attach(this); } this._positionStrategy = _config.positionStrategy; } /** The overlay's HTML element */ get overlayElement() { return this._pane; } /** The overlay's backdrop HTML element. */ get backdropElement() { return this._backdropElement; } /** * Wrapper around the panel element. Can be used for advanced * positioning where a wrapper with specific styling is * required around the overlay pane. */ get hostElement() { return this._host; } /** * Attaches content, given via a Portal, to the overlay. * If the overlay is configured to have a backdrop, it will be created. * * @param portal Portal instance to which to attach the overlay. * @returns The portal attachment result. */ attach(portal) { let attachResult = this._portalOutlet.attach(portal); // Update the pane element with the given configuration. if (!this._host.parentElement && this._previousHostParent) { this._previousHostParent.appendChild(this._host); } if (this._positionStrategy) { this._positionStrategy.attach(this); } this._updateStackingOrder(); this._updateElementSize(); this._updateElementDirection(); if (this._scrollStrategy) { this._scrollStrategy.enable(); } // Update the position once the zone is stable so that the overlay will be fully rendered // before attempting to position it, as the position may depend on the size of the rendered // content. this._ngZone.onStable .pipe(take(1)) .subscribe(() => { // The overlay could've been detached before the zone has stabilized. if (this.hasAttached()) { this.updatePosition(); } }); // Enable pointer events for the overlay pane element. this._togglePointerEvents(true); if (this._config.hasBackdrop) { this._attachBackdrop(); } if (this._config.panelClass) { this._toggleClasses(this._pane, this._config.panelClass, true); } // Only emit the `attachments` event once all other setup is done. this._attachments.next(); // Track this overlay by the keyboard dispatcher this._keyboardDispatcher.add(this); if (this._config.disposeOnNavigation) { this._locationChanges = this._location.subscribe(() => this.dispose()); } this._outsideClickDispatcher.add(this); return attachResult; } /** * Detaches an overlay from a portal. * @returns The portal detachment result. */ detach() { if (!this.hasAttached()) { return; } this.detachBackdrop(); // When the overlay is detached, the pane element should disable pointer events. // This is necessary because otherwise the pane element will cover the page and disable // pointer events therefore. Depends on the position strategy and the applied pane boundaries. this._togglePointerEvents(false); if (this._positionStrategy && this._positionStrategy.detach) { this._positionStrategy.detach(); } if (this._scrollStrategy) { this._scrollStrategy.disable(); } const detachmentResult = this._portalOutlet.detach(); // Only emit after everything is detached. this._detachments.next(); // Remove this overlay from keyboard dispatcher tracking. this._keyboardDispatcher.remove(this); // Keeping the host element in the DOM can cause scroll jank, because it still gets // rendered, even though it's transparent and unclickable which is why we remove it. this._detachContentWhenStable(); this._locationChanges.unsubscribe(); this._outsideClickDispatcher.remove(this); return detachmentResult; } /** Cleans up the overlay from the DOM. */ dispose() { const isAttached = this.hasAttached(); if (this._positionStrategy) { this._positionStrategy.dispose(); } this._disposeScrollStrategy(); this._disposeBackdrop(this._backdropElement); this._locationChanges.unsubscribe(); this._keyboardDispatcher.remove(this); this._portalOutlet.dispose(); this._attachments.complete(); this._backdropClick.complete(); this._keydownEvents.complete(); this._outsidePointerEvents.complete(); this._outsideClickDispatcher.remove(this); if (this._host && this._host.parentNode) { this._host.parentNode.removeChild(this._host); this._host = null; } this._previousHostParent = this._pane = null; if (isAttached) { this._detachments.next(); } this._detachments.complete(); } /** Whether the overlay has attached content. */ hasAttached() { return this._portalOutlet.hasAttached(); } /** Gets an observable that emits when the backdrop has been clicked. */ backdropClick() { return this._backdropClick; } /** Gets an observable that emits when the overlay has been attached. */ attachments() { return this._attachments; } /** Gets an observable that emits when the overlay has been detached. */ detachments() { return this._detachments; } /** Gets an observable of keydown events targeted to this overlay. */ keydownEvents() { return this._keydownEvents; } /** Gets an observable of pointer events targeted outside this overlay. */ outsidePointerEvents() { return this._outsidePointerEvents; } /** Gets the current overlay configuration, which is immutable. */ getConfig() { return this._config; } /** Updates the position of the overlay based on the position strategy. */ updatePosition() { if (this._positionStrategy) { this._positionStrategy.apply(); } } /** Switches to a new position strategy and updates the overlay position. */ updatePositionStrategy(strategy) { if (strategy === this._positionStrategy) { return; } if (this._positionStrategy) { this._positionStrategy.dispose(); } this._positionStrategy = strategy; if (this.hasAttached()) { strategy.attach(this); this.updatePosition(); } } /** Update the size properties of the overlay. */ updateSize(sizeConfig) { this._config = Object.assign(Object.assign({}, this._config), sizeConfig); this._updateElementSize(); } /** Sets the LTR/RTL direction for the overlay. */ setDirection(dir) { this._config = Object.assign(Object.assign({}, this._config), { direction: dir }); this._updateElementDirection(); } /** Add a CSS class or an array of classes to the overlay pane. */ addPanelClass(classes) { if (this._pane) { this._toggleClasses(this._pane, classes, true); } } /** Remove a CSS class or an array of classes from the overlay pane. */ removePanelClass(classes) { if (this._pane) { this._toggleClasses(this._pane, classes, false); } } /** * Returns the layout direction of the overlay panel. */ getDirection() { const direction = this._config.direction; if (!direction) { return 'ltr'; } return typeof direction === 'string' ? direction : direction.value; } /** Switches to a new scroll strategy. */ updateScrollStrategy(strategy) { if (strategy === this._scrollStrategy) { return; } this._disposeScrollStrategy(); this._scrollStrategy = strategy; if (this.hasAttached()) { strategy.attach(this); strategy.enable(); } } /** Updates the text direction of the overlay panel. */ _updateElementDirection() { this._host.setAttribute('dir', this.getDirection()); } /** Updates the size of the overlay element based on the overlay config. */ _updateElementSize() { if (!this._pane) { return; } const style = this._pane.style; style.width = coerceCssPixelValue(this._config.width); style.height = coerceCssPixelValue(this._config.height); style.minWidth = coerceCssPixelValue(this._config.minWidth); style.minHeight = coerceCssPixelValue(this._config.minHeight); style.maxWidth = coerceCssPixelValue(this._config.maxWidth); style.maxHeight = coerceCssPixelValue(this._config.maxHeight); } /** Toggles the pointer events for the overlay pane element. */ _togglePointerEvents(enablePointer) { this._pane.style.pointerEvents = enablePointer ? '' : 'none'; } /** Attaches a backdrop for this overlay. */ _attachBackdrop() { const showingClass = 'cdk-overlay-backdrop-showing'; this._backdropElement = this._document.createElement('div'); this._backdropElement.classList.add('cdk-overlay-backdrop'); if (this._config.backdropClass) { this._toggleClasses(this._backdropElement, this._config.backdropClass, true); } // Insert the backdrop before the pane in the DOM order, // in order to handle stacked overlays properly. this._host.parentElement.insertBefore(this._backdropElement, this._host); // Forward backdrop clicks such that the consumer of the overlay can perform whatever // action desired when such a click occurs (usually closing the overlay). this._backdropElement.addEventListener('click', this._backdropClickHandler); // Add class to fade-in the backdrop after one frame. if (typeof requestAnimationFrame !== 'undefined') { this._ngZone.runOutsideAngular(() => { requestAnimationFrame(() => { if (this._backdropElement) { this._backdropElement.classList.add(showingClass); } }); }); } else { this._backdropElement.classList.add(showingClass); } } /** * Updates the stacking order of the element, moving it to the top if necessary. * This is required in cases where one overlay was detached, while another one, * that should be behind it, was destroyed. The next time both of them are opened, * the stacking will be wrong, because the detached element's pane will still be * in its original DOM position. */ _updateStackingOrder() { if (this._host.nextSibling) { this._host.parentNode.appendChild(this._host); } } /** Detaches the backdrop (if any) associated with the overlay. */ detachBackdrop() { const backdropToDetach = this._backdropElement; if (!backdropToDetach) { return; } let timeoutId; const finishDetach = () => { // It may not be attached to anything in certain cases (e.g. unit tests). if (backdropToDetach) { backdropToDetach.removeEventListener('click', this._backdropClickHandler); backdropToDetach.removeEventListener('transitionend', finishDetach); this._disposeBackdrop(backdropToDetach); } if (this._config.backdropClass) { this._toggleClasses(backdropToDetach, this._config.backdropClass, false); } clearTimeout(timeoutId); }; backdropToDetach.classList.remove('cdk-overlay-backdrop-showing'); this._ngZone.runOutsideAngular(() => { backdropToDetach.addEventListener('transitionend', finishDetach); }); // If the backdrop doesn't have a transition, the `transitionend` event won't fire. // In this case we make it unclickable and we try to remove it after a delay. backdropToDetach.style.pointerEvents = 'none'; // Run this outside the Angular zone because there's nothing that Angular cares about. // If it were to run inside the Angular zone, every test that used Overlay would have to be // either async or fakeAsync. timeoutId = this._ngZone.runOutsideAngular(() => setTimeout(finishDetach, 500)); } /** Toggles a single CSS class or an array of classes on an element. */ _toggleClasses(element, cssClasses, isAdd) { const classList = element.classList; coerceArray(cssClasses).forEach(cssClass => { // We can't do a spread here, because IE doesn't support setting multiple classes. // Also trying to add an empty string to a DOMTokenList will throw. if (cssClass) { isAdd ? classList.add(cssClass) : classList.remove(cssClass); } }); } /** Detaches the overlay content next time the zone stabilizes. */ _detachContentWhenStable() { // Normally we wouldn't have to explicitly run this outside the `NgZone`, however // if the consumer is using `zone-patch-rxjs`, the `Subscription.unsubscribe` call will // be patched to run inside the zone, which will throw us into an infinite loop. this._ngZone.runOutsideAngular(() => { // We can't remove the host here immediately, because the overlay pane's content // might still be animating. This stream helps us avoid interrupting the animation // by waiting for the pane to become empty. const subscription = this._ngZone.onStable .pipe(takeUntil(merge(this._attachments, this._detachments))) .subscribe(() => { // Needs a couple of checks for the pane and host, because // they may have been removed by the time the zone stabilizes. if (!this._pane || !this._host || this._pane.children.length === 0) { if (this._pane && this._config.panelClass) { this._toggleClasses(this._pane, this._config.panelClass, false); } if (this._host && this._host.parentElement) { this._previousHostParent = this._host.parentElement; this._previousHostParent.removeChild(this._host); } subscription.unsubscribe(); } }); }); } /** Disposes of a scroll strategy. */ _disposeScrollStrategy() { const scrollStrategy = this._scrollStrategy; if (scrollStrategy) { scrollStrategy.disable(); if (scrollStrategy.detach) { scrollStrategy.detach(); } } } /** Removes a backdrop element from the DOM. */ _disposeBackdrop(backdrop) { if (backdrop) { if (backdrop.parentNode) { backdrop.parentNode.removeChild(backdrop); } // It is possible that a new portal has been attached to this overlay since we started // removing the backdrop. If that is the case, only clear the backdrop reference if it // is still the same instance that we started to remove. if (this._backdropElement === backdrop) { this._backdropElement = null; } } } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ // TODO: refactor clipping detection into a separate thing (part of scrolling module) // TODO: doesn't handle both flexible width and height when it has to scroll along both axis. /** Class to be added to the overlay bounding box. */ const boundingBoxClass = 'cdk-overlay-connected-position-bounding-box'; /** Regex used to split a string on its CSS units. */ const cssUnitPattern = /([A-Za-z%]+)$/; /** * A strategy for positioning overlays. Using this strategy, an overlay is given an * implicit position relative some origin element. The relative position is defined in terms of * a point on the origin element that is connected to a point on the overlay element. For example, * a basic dropdown is connecting the bottom-left corner of the origin to the top-left corner * of the overlay. */ class FlexibleConnectedPositionStrategy { constructor(connectedTo, _viewportRuler, _document, _platform, _overlayContainer) { this._viewportRuler = _viewportRuler; this._document = _document; this._platform = _platform; this._overlayContainer = _overlayContainer; /** Last size used for the bounding box. Used to avoid resizing the overlay after open. */ this._lastBoundingBoxSize = { width: 0, height: 0 }; /** Whether the overlay was pushed in a previous positioning. */ this._isPushed = false; /** Whether the overlay can be pushed on-screen on the initial open. */ this._canPush = true; /** Whether the overlay can grow via flexible width/height after the initial open. */ this._growAfterOpen = false; /** Whether the overlay's width and height can be constrained to fit within the viewport. */ this._hasFlexibleDimensions = true; /** Whether the overlay position is locked. */ this._positionLocked = false; /** Amount of space that must be maintained between the overlay and the edge of the viewport. */ this._viewportMargin = 0; /** The Scrollable containers used to check scrollable view properties on position change. */ this._scrollables = []; /** Ordered list of preferred positions, from most to least desirable. */ this._preferredPositions = []; /** Subject that emits whenever the position changes. */ this._positionChanges = new Subject(); /** Subscription to viewport size changes. */ this._resizeSubscription = Subscription.EMPTY; /** Default offset for the overlay along the x axis. */ this._offsetX = 0; /** Default offset for the overlay along the y axis. */ this._offsetY = 0; /** Keeps track of the CSS classes that the position strategy has applied on the overlay panel. */ this._appliedPanelClasses = []; /** Observable sequence of position changes. */ this.positionChanges = this._positionChanges; this.setOrigin(connectedTo); } /** Ordered list of preferred positions, from most to least desirable. */ get positions() { return this._preferredPositions; } /** Attaches this position strategy to an overlay. */ attach(overlayRef) { if (this._overlayRef && overlayRef !== this._overlayRef && (typeof ngDevMode === 'undefined' || ngDevMode)) { throw Error('This position strategy is already attached to an overlay'); } this._validatePositions(); overlayRef.hostElement.classList.add(boundingBoxClass); this._overlayRef = overlayRef; this._boundingBox = overlayRef.hostElement; this._pane = overlayRef.overlayElement; this._isDisposed = false; this._isInitialRender = true; this._lastPosition = null; this._resizeSubscription.unsubscribe(); this._resizeSubscription = this._viewportRuler.change().subscribe(() => { // When the window is resized, we want to trigger the next reposition as if it // was an initial render, in order for the strategy to pick a new optimal position, // otherwise position locking will cause it to stay at the old one. this._isInitialRender = true; this.apply(); }); } /** * Updates the position of the overlay element, using whichever preferred position relative * to the origin best fits on-screen. * * The selection of a position goes as follows: * - If any positions fit completely within the viewport as-is, * choose the first position that does so. * - If flexible dimensions are enabled and at least one satifies the given minimum width/height, * choose the position with the greatest available size modified by the positions' weight. * - If pushing is enabled, take the position that went off-screen the least and push it * on-screen. * - If none of the previous criteria were met, use the position that goes off-screen the least. * @docs-private */ apply() { // We shouldn't do anything if the strategy was disposed or we're on the server. if (this._isDisposed || !this._platform.isBrowser) { return; } // If the position has been applied already (e.g. when the overlay was opened) and the // consumer opted into locking in the position, re-use the old position, in order to // prevent the overlay from jumping around. if (!this._isInitialRender && this._positionLocked && this._lastPosition) { this.reapplyLastPosition(); return; } this._clearPanelClasses(); this._resetOverlayElementStyles(); this._resetBoundingBoxStyles(); // We need the bounding rects for the origin and the overlay to determine how to position // the overlay relative to the origin. // We use the viewport rect to determine whether a position would go off-screen. this._viewportRect = this._getNarrowedViewportRect(); this._originRect = this._getOriginRect(); this._overlayRect = this._pane.getBoundingClientRect(); const originRect = this._originRect; const overlayRect = this._overlayRect; const viewportRect = this._viewportRect; // Positions where the overlay will fit with flexible dimensions. const flexibleFits = []; // Fallback if none of the preferred positions fit within the viewport. let fallback; // Go through each of the preferred positions looking for a good fit. // If a good fit is found, it will be applied immediately. for (let pos of this._preferredPositions) { // Get the exact (x, y) coordinate for the point-of-origin on the origin element. let originPoint = this._getOriginPoint(originRect, pos); // From that point-of-origin, get the exact (x, y) coordinate for the top-left corner of the // overlay in this position. We use the top-left corner for calculations and later translate // this into an appropriate (top, left, bottom, right) style. let overlayPoint = this._getOverlayPoint(originPoint, overlayRect, pos); // Calculate how well the overlay would fit into the viewport with this point. let overlayFit = this._getOverlayFit(overlayPoint, overlayRect, viewportRect, pos); // If the overlay, without any further work, fits into the viewport, use this position. if (overlayFit.isCompletelyWithinViewport) { this._isPushed = false; this._applyPosition(pos, originPoint); return; } // If the overlay has flexible dimensions, we can use this position // so long as there's enough space for the minimum dimensions. if (this._canFitWithFlexibleDimensions(overlayFit, overlayPoint, viewportRect)) { // Save positions where the overlay will fit with flexible dimensions. We will use these // if none of the positions fit *without* flexible dimensions. flexibleFits.push({ position: pos, origin: originPoint, overlayRect, boundingBoxRect: this._calculateBoundingBoxRect(originPoint, pos) }); continue; } // If the current preferred position does not fit on the screen, remember the position // if it has more visible area on-screen than we've seen and move onto the next preferred // position. if (!fallback || fallback.overlayFit.visibleArea < overlayFit.visibleArea) { fallback = { overlayFit, overlayPoint, originPoint, position: pos, overlayRect }; } } // If there are any positions where the overlay would fit with flexible dimensions, choose the // one that has the greatest area available modified by the position's weight if (flexibleFits.length) { let bestFit = null; let bestScore = -1; for (const fit of flexibleFits) { const score = fit.boundingBoxRect.width * fit.boundingBoxRect.height * (fit.position.weight || 1); if (score > bestScore) { bestScore = score; bestFit = fit; } } this._isPushed = false; this._applyPosition(bestFit.position, bestFit.origin); return; } // When none of the preferred positions fit within the viewport, take the position // that went off-screen the least and attempt to push it on-screen. if (this._canPush) { // TODO(jelbourn): after pushing, the opening "direction" of the overlay might not make sense. this._isPushed = true; this._applyPosition(fallback.position, fallback.originPoint); return; } // All options for getting the overlay within the viewport have been exhausted, so go with the // position that went off-screen the least. this._applyPosition(fallback.position, fallback.originPoint); } detach() { this._clearPanelClasses(); this._lastPosition = null; this._previousPushAmount = null; this._resizeSubscription.unsubscribe(); } /** Cleanup after the element gets destroyed. */ dispose() { if (this._isDisposed) { return; } // We can't use `_resetBoundingBoxStyles` here, because it resets // some properties to zero, rather than removing them. if (this._boundingBox) { extendStyles(this._boundingBox.style, { top: '', left: '', right: '', bottom: '', height: '', width: '', alignItems: '', justifyContent: '', }); } if (this._pane) { this._resetOverlayElementStyles(); } if (this._overlayRef) { this._overlayRef.hostElement.classList.remove(boundingBoxClass); } this.detach(); this._positionChanges.complete(); this._overlayRef = this._boundingBox = null; this._isDisposed = true; } /** * This re-aligns the overlay element with the trigger in its last calculated position, * even if a position higher in the "preferred positions" list would now fit. This * allows one to re-align the panel without changing the orientation of the panel. */ reapplyLastPosition() { if (!this._isDisposed && (!this._platform || this._platform.isBrowser)) { this._originRect = this._getOriginRect(); this._overlayRect = this._pane.getBoundingClientRect(); this._viewportRect = this._getNarrowedViewportRect(); const lastPosition = this._lastPosition || this._preferredPositions[0]; const originPoint = this._getOriginPoint(this._originRect, lastPosition); this._applyPosition(lastPosition, originPoint); } } /** * Sets the list of Scrollable containers that host the origin element so that * on reposition we can evaluate if it or the overlay has been clipped or outside view. Every * Scrollable must be an ancestor element of the strategy's origin element. */ withScrollableContainers(scrollables) { this._scrollables = scrollables; return this; } /** * Adds new preferred positions. * @param positions List of positions options for this overlay. */ withPositions(positions) { this._preferredPositions = positions; // If the last calculated position object isn't part of the positions anymore, clear // it in order to avoid it being picked up if the consumer tries to re-apply. if (positions.indexOf(this._lastPosition) === -1) { this._lastPosition = null; } this._validatePositions(); return this; } /** * Sets a minimum distance the overlay may be positioned to the edge of the viewport. * @param margin Required margin between the overlay and the viewport edge in pixels. */ withViewportMargin(margin) { this._viewportMargin = margin; return this; } /** Sets whether the overlay's width and height can be constrained to fit within the viewport. */ withFlexibleDimensions(flexibleDimensions = true) { this._hasFlexibleDimensions = flexibleDimensions; return this; } /** Sets whether the overlay can grow after the initial open via flexible width/height. */ withGrowAfterOpen(growAfterOpen = true) { this._growAfterOpen = growAfterOpen; return this; } /** Sets whether the overlay can be pushed on-screen if none of the provided positions fit. */ withPush(canPush = true) { this._canPush = canPush; return this; } /** * Sets whether the overlay's position should be locked in after it is positioned * initially. When an overlay is locked in, it won't attempt to reposition itself * when the position is re-applied (e.g. when the user scrolls away). * @param isLocked Whether the overlay should locked in. */ withLockedPosition(isLocked = true) { this._positionLocked = isLocked; return this; } /** * Sets the origin, relative to which to position the overlay. * Using an element origin is useful for building components that need to be positioned * relatively to a trigger (e.g. dropdown menus or tooltips), whereas using a point can be * used for cases like contextual menus which open relative to the user's pointer. * @param origin Reference to the new origin. */ setOrigin(origin) { this._origin = origin; return this; } /** * Sets the default offset for the overlay's connection point on the x-axis. * @param offset New offset in the X axis. */ withDefaultOffsetX(offset) { this._offsetX = offset; return this; } /** * Sets the default offset for the overlay's connection point on the y-axis. * @param offset New offset in the Y axis. */ withDefaultOffsetY(offset) { this._offsetY = offset; return this; } /** * Configures that the position strategy should set a `transform-origin` on some elements * inside the overlay, depending on the current position that is being applied. This is * useful for the cases where the origin of an animation can change depending on the * alignment of the overlay. * @param selector CSS selector that will be used to find the target * elements onto which to set the transform origin. */ withTransformOriginOn(selector) { this._transformOriginSelector = selector; return this; } /** * Gets the (x, y) coordinate of a connection point on the origin based on a relative position. */ _getOriginPoint(originRect, pos) { let x; if (pos.originX == 'center') { // Note: when centering we should always use the `left` // offset, otherwise the position will be wrong in RTL. x = originRect.left + (originRect.width / 2); } else { const startX = this._isRtl() ? originRect.right : originRect.left; const endX = this._isRtl() ? originRect.left : originRect.right; x = pos.originX == 'start' ? startX : endX; } let y; if (pos.originY == 'center') { y = originRect.top + (originRect.height / 2); } else { y = pos.originY == 'top' ? originRect.top : originRect.bottom; } return { x, y }; } /** * Gets the (x, y) coordinate of the top-left corner of the overlay given a given position and * origin point to which the overlay should be connected. */ _getOverlayPoint(originPoint, overlayRect, pos) { // Calculate the (overlayStartX, overlayStartY), the start of the // potential overlay position relative to the origin point. let overlayStartX; if (pos.overlayX == 'center') { overlayStartX = -overlayRect.width / 2; } else if (pos.overlayX === 'start') { overlayStartX = this._isRtl() ? -overlayRect.width : 0; } else { overlayStartX = this._isRtl() ? 0 : -overlayRect.width; } let overlayStartY; if (pos.overlayY == 'center') { overlayStartY = -overlayRect.height / 2; } else { overlayStartY = pos.overlayY == 'top' ? 0 : -overlayRect.height; } // The (x, y) coordinates of the overlay. return { x: originPoint.x + overlayStartX, y: originPoint.y + overlayStartY, }; } /** Gets how well an overlay at the given point will fit within the viewport. */ _getOverlayFit(point, rawOverlayRect, viewport, position) { // Round the overlay rect when comparing against the // viewport, because the viewport is always rounded. const overlay = getRoundedBoundingClientRect(rawOverlayRect); let { x, y } = point; let offsetX = this._getOffset(position, 'x'); let offsetY = this._getOffset(position, 'y'); // Account for the offsets since they could push the overlay out of the viewport. if (offsetX) { x += offsetX; } if (offsetY) { y += offsetY; } // How much the overlay would overflow at this position, on each side. let leftOverflow = 0 - x; let rightOverflow = (x + overlay.width) - viewport.width; let topOverflow = 0 - y; let bottomOverflow = (y + overlay.height) - viewport.height; // Visible parts of the element on each axis. let visibleWidth = this._subtractOverflows(overlay.width, leftOverflow, rightOverflow); let visibleHeight = this._subtractOverflows(overlay.height, topOverflow, bottomOverflow); let visibleArea = visibleWidth * visibleHeight; return { visibleArea, isCompletelyWithinViewport: (overlay.width * overlay.height) === visibleArea, fitsInViewportVertically: visibleHeight === overlay.height, fitsInViewportHorizontally: visibleWidth == overlay.width, }; } /** * Whether the overlay can fit within the viewport when it may resize either its width or height. * @param fit How well the overlay fits in the viewport at some position. * @param point The (x, y) coordinates of the overlat at some position. * @param viewport The geometry of the viewport. */ _canFitWithFlexibleDimensions(fit, point, viewport) { if (this._hasFlexibleDimensions) { const availableHeight = viewport.bottom - point.y; const availableWidth = viewport.right - point.x; const minHeight = getPixelValue(this._overlayRef.getConfig().minHeight); const minWidth = getPixelValue(this._overlayRef.getConfig().minWidth); const verticalFit = fit.fitsInViewportVertically || (minHeight != null && minHeight <= availableHeight); const horizontalFit = fit.fitsInViewportHorizontally || (minWidth != null && minWidth <= availableWidth); return verticalFit && horizontalFit; } return false; } /** * Gets the point at which the overlay can be "pushed" on-screen. If the overlay is larger than * the viewport, the top-left corner will be pushed on-screen (with overflow occuring on the * right and bottom). * * @param start Starting point from which the overlay is pushed. * @param overlay Dimensions of the overlay. * @param scrollPosition Current viewport scroll position. * @returns The point at which to position the overlay after pushing. This is effectively a new * originPoint. */ _pushOverlayOnScreen(start, rawOverlayRect, scrollPosition) { // If the position is locked and we've pushed the overlay already, reuse the previous push // amount, rather than pushing it again. If we were to continue pushing, the element would // remain in the viewport, which goes against the expectations when position locking is enabled. if (this._previousPushAmount && this._positionLocked) { return { x: start.x + this._previousPushAmount.x, y: start.y + this._previousPushAmount.y }; } // Round the overlay rect when comparing against the // viewport, because the viewport is always rounded. const overlay = getRoundedBoundingClientRect(rawOverlayRect); const viewport = this._viewportRect; // Determine how much the overlay goes outside the viewport on each // side, which we'll use to decide which direction to push it. const overflowRight = Math.max(start.x + overlay.width - viewport.width, 0); const overflowBottom = Math.max(start.y + overlay.height - viewport.height, 0); const overflowTop = Math.max(viewport.top - scrollPosition.top - start.y, 0); const overflowLeft = Math.max(viewport.left - scrollPosition.left - start.x, 0); // Amount by which to push the overlay in each axis such that it remains on-screen. let pushX = 0; let pushY = 0; // If the overlay fits completely within the bounds of the viewport, push it from whichever // direction is goes off-screen. Otherwise, push the top-left corner such that its in the // viewport and allow for the trailing end of the overlay to go out of bounds. if (overlay.width <= viewport.width) { pushX = overflowLeft || -overflowRight; } else { pushX = start.x < this._viewportMargin ? (viewport.left - scrollPosition.left) - start.x : 0; } if (overlay.height <= viewport.height) { pushY = overflowTop || -overflowBottom; } else { pushY = start.y < this._viewportMargin ? (viewport.top - scrollPosition.top) - start.y : 0; } this._previousPushAmount = { x: pushX, y: pushY }; return { x: start.x + pushX, y: start.y + pushY, }; } /** * Applies a computed position to the overlay and emits a position change. * @param position The position preference * @param originPoint The point on the origin element where the overlay is connected. */ _applyPosition(position, originPoint) { this._setTransformOrigin(position); this._setOverlayElementStyles(originPoint, position); this._setBoundingBoxStyles(originPoint, position); if (position.panelClass) { this._addPanelClasses(position.panelClass); } // Save the last connected position in case the position needs to be re-calculated. this._lastPosition = position; // Notify that the position has been changed along with its change properties. // We only emit if we've got any subscriptions, because the scroll visibility // calculcations can be somewhat expensive. if (this._positionChanges.observers.length) { const scrollableViewProperties = this._getScrollVisibility(); const changeEvent = new ConnectedOverlayPositionChange(position, scrollableViewProperties); this._positionChanges.next(changeEvent); } this._isInitialRender = false; } /** Sets the transform origin based on the configured selector and the passed-in position. */ _setTransformOrigin(position) { if (!this._transformOriginSelector) { return; } const elements = this._boundingBox.querySelectorAll(this._transformOriginSelector); let xOrigin; let yOrigin = position.overlayY; if (position.overlayX === 'center') { xOrigin = 'center'; } else if (this._isRtl()) { xOrigin = position.overlayX === 'start' ? 'right' : 'left'; } else { xOrigin = position.overlayX === 'start' ? 'left' : 'right'; } for (let i = 0; i < elements.length; i++) { elements[i].style.transformOrigin = `${xOrigin} ${yOrigin}`; } } /** * Gets the position and size of the overlay's sizing container. * * This method does no measuring and applies no styles so that we can cheaply compute the * bounds for all positions and choose the best fit based on these results. */ _calculateBoundingBoxRect(origin, position) { const viewport = this._viewportRect; const isRtl = this._isRtl(); let height, top, bottom; if (position.overlayY === 'top') { // Overlay is opening "downward" and thus is bound by the bottom viewport edge. top = origin.y; height = viewport.height - top + this._viewportMargin; } else if (position.overlayY === 'bottom') { // Overlay is opening "upward" and thus is bound by the top viewport edge. We need to add // the viewport margin back in, because the viewport rect is narrowed down to remove the // margin, whereas the `origin` position is calculated based on its `ClientRect`. bottom = viewport.height - origin.y + this._viewportMargin * 2; height = viewport.height - bottom + this._viewportMargin; } else { // If neither top nor bottom, it means that the overlay is vertically centered on the // origin point. Note that we want the position relative to the viewport, rather than // the page, which is why we don't use something like `viewport.bottom - origin.y` and // `origin.y - viewport.top`. const smallestDistanceToViewportEdge = Math.min(viewport.bottom - origin.y + viewport.top, origin.y); const previousHeight = this._lastBoundingBoxSize.height; height = smallestDistanceToViewportEdge * 2; top = origin.y - smallestDistanceToViewportEdge; if (height > previousHeight && !this._isInitialRender && !this._growAfterOpen) { top = origin.y - (previousHeight / 2); } } // The overlay is opening 'right-ward' (the content flows to the right). const isBoundedByRightViewportEdge = (position.overlayX === 'start' && !isRtl) || (position.overlayX === 'end' && isRtl); // The overlay is opening 'left-ward' (the content flows to the left). const isBoundedByLeftViewportEdge = (position.overlayX === 'end' && !isRtl) || (position.overlayX === 'start' && isRtl); let width, left, right; if (isBoundedByLeftViewportEdge) { right = viewport.width - origin.x + this._viewportMargin; width = origin.x - this._viewportMargin; } else if (isBoundedByRightViewportEdge) { left = origin.x; width = viewport.right - origin.x; } else { // If neither start nor end, it means that the overlay is horizontally centered on the // origin point. Note that we want the position relative to the viewport, rather than // the page, which is why we don't use something like `viewport.right - origin.x` and // `origin.x - viewport.left`. const smallestDistanceToViewportEdge = Math.min(viewport.right - origin.x + viewport.left, origin.x); const previousWidth = this._lastBoundingBoxSize.width; width = smallestDistanceToViewportEdge * 2; left = origin.x - smallestDistanceToViewportEdge; if (width > previousWidth && !this._isInitialRender && !this._growAfterOpen) { left = origin.x - (previousWidth / 2); } } return { top: top, left: left, bottom: bottom, right: right, width, height }; } /** * Sets the position and size of the overlay's sizing wrapper. The wrapper is positioned on the * origin's connection point and stetches to the bounds of the viewport. * * @param origin The point on the origin element where the overlay is connected. * @param position The position preference */ _setBoundingBoxStyles(origin, position) { const boundingBoxRect = this._calculateBoundingBoxRect(origin, position); // It's weird if the overlay *grows* while scrolling, so we take the last size into account // when applying a new size. if (!this._isInitialRender && !this._growAfterOpen) { boundingBoxRect.height = Math.min(boundingBoxRect.height, this._lastBoundingBoxSize.height); boundingBoxRect.width = Math.min(boundingBoxRect.width, this._lastBoundingBoxSize.width); } const styles = {}; if (this._hasExactPosition()) { styles.top = styles.left = '0'; styles.bottom = styles.right = styles.maxHeight = styles.maxWidth = ''; styles.width = styles.height = '100%'; } else { const maxHeight = this._overlayRef.getConfig().maxHeight; const maxWidth = this._overlayRef.getConfig().maxWidth; styles.height = coerceCssPixelValue(boundingBoxRect.height); styles.top = coerceCssPixelValue(boundingBoxRect.top); styles.bottom = coerceCssPixelValue(boundingBoxRect.bottom); styles.width = coerceCssPixelValue(boundingBoxRect.width); styles.left = coerceCssPixelValue(boundingBoxRect.left); styles.right = coerceCssPixelValue(boundingBoxRect.right); // Push the pane content towards the proper direction. if (position.overlayX === 'center') { styles.alignItems = 'center'; } else { styles.alignItems = position.overlayX === 'end' ? 'flex-end' : 'flex-start'; } if (position.overlayY === 'center') { styles.justifyContent = 'center'; } else { styles.justifyContent = position.overlayY === 'bottom' ? 'flex-end' : 'flex-start'; } if (maxHeight) { styles.maxHeight = coerceCssPixelValue(maxHeight); } if (maxWidth) { styles.maxWidth = coerceCssPixelValue(maxWidth); } } this._lastBoundingBoxSize = boundingBoxRect; extendStyles(this._boundingBox.style, styles); } /** Resets the styles for the bounding box so that a new positioning can be computed. */ _resetBoundingBoxStyles() { extendStyles(this._boundingBox.style, { top: '0', left: '0', right: '0', bottom: '0', height: '', width: '', alignItems: '', justifyContent: '', }); } /** Resets the styles for the overlay pane so that a new positioning can be computed. */ _resetOverlayElementStyles() { extendStyles(this._pane.style, { top: '', left: '', bottom: '', right: '', position: '', transform: '', }); } /** Sets positioning styles to the overlay element. */ _setOverlayElementStyles(originPoint, position) { const styles = {}; const hasExactPosition = this._hasExactPosition(); const hasFlexibleDimensions = this._hasFlexibleDimensions; const config = this._overlayRef.getConfig(); if (hasExactPosition) { const scrollPosition = this._viewportRuler.getViewportScrollPosition(); extendStyles(styles, this._getExactOverlayY(position, originPoint, scrollPosition)); extendStyles(styles, this._getExactOverlayX(position, originPoint, scrollPosition)); } else { styles.position = 'static'; } // Use a transform to apply the offsets. We do this because the `center` positions rely on // being in the normal flex flow and setting a `top` / `left` at all will completely throw // off the position. We also can't use margins, because they won't have an effect in some // cases where the element doesn't have anything to "push off of". Finally, this works // better both with flexible and non-flexible positioning. let transformString = ''; let offsetX = this._getOffset(position, 'x'); let offsetY = this._getOffset(position, 'y'); if (offsetX) { transformString += `translateX(${offsetX}px) `; } if (offsetY) { transformString += `translateY(${offsetY}px)`; } styles.transform = transformString.trim(); // If a maxWidth or maxHeight is specified on the overlay, we remove them. We do this because // we need these values to both be set to "100%" for the automatic flexible sizing to work. // The maxHeight and maxWidth are set on the boundingBox in order to enforce the constraint. // Note that this doesn't apply when we have an exact position, in which case we do want to // apply them because they'll be cleared from the bounding box. if (config.maxHeight) { if (hasExactPosition) { styles.maxHeight = coerceCssPixelValue(config.maxHeight); } else if (hasFlexibleDimensions) { styles.maxHeight = ''; } } if (config.maxWidth) { if (hasExactPosition) { styles.maxWidth = coerceCssPixelValue(config.maxWidth); } else if (hasFlexibleDimensions) { styles.maxWidth = ''; } } extendStyles(this._pane.style, styles); } /** Gets the exact top/bottom for the overlay when not using flexible sizing or when pushing. */ _getExactOverlayY(position, originPoint, scrollPosition) { // Reset any existing styles. This is necessary in case the // preferred position has changed since the last `apply`. let styles = { top: '', bottom: '' }; let overlayPoint = this._getOverlayPoint(originPoint, this._overlayRect, position); if (this._isPushed) { overlayPoint = this._pushOverlayOnScreen(overlayPoint, this._overlayRect, scrollPosition); } let virtualKeyboardOffset = this._overlayContainer.getContainerElement().getBoundingClientRect().top; // Normally this would be zero, however when the overlay is attached to an input (e.g. in an // autocomplete), mobile browsers will shift everything in order to put the input in the middle // of the screen and to make space for the virtual keyboard. We need to account for this offset, // otherwise our positioning will be thrown off. overlayPoint.y -= virtualKeyboardOffset; // We want to set either `top` or `bottom` based on whether the overlay wants to appear // above or below the origin and the direction in which the element will expand. if (position.overlayY === 'bottom') { // When using `bottom`, we adjust the y position such that it is the distance // from the bottom of the viewport rather than the top. const documentHeight = this._document.documentElement.clientHeight; styles.bottom = `${documentHeight - (overlayPoint.y + this._overlayRect.height)}px`; } else { styles.top = coerceCssPixelValue(overlayPoint.y); } return styles; } /** Gets the exact left/right for the overlay when not using flexible sizing or when pushing. */ _getExactOverlayX(position, originPoint, scrollPosition) { // Reset any existing styles. This is necessary in case the preferred position has // changed since the last `apply`. let styles = { left: '', right: '' }; let overlayPoint = this._getOverlayPoint(originPoint, this._overlayRect, position); if (this._isPushed) { overlayPoint = this._pushOverlayOnScreen(overlayPoint, this._overlayRect, scrollPosition); } // We want to set either `left` or `right` based on whether the overlay wants to appear "before" // or "after" the origin, which determines the direction in which the element will expand. // For the horizontal axis, the meaning of "before" and "after" change based on whether the // page is in RTL or LTR. let horizontalStyleProperty; if (this._isRtl()) { horizontalStyleProperty = position.overlayX === 'end' ? 'left' : 'right'; } else { horizontalStyleProperty = position.overlayX === 'end' ? 'right' : 'left'; } // When we're setting `right`, we adjust the x position such that it is the distance // from the right edge of the viewport rather than the left edge. if (horizontalStyleProperty === 'right') { const documentWidth = this._document.documentElement.clientWidth; styles.right = `${documentWidth - (overlayPoint.x + this._overlayRect.width)}px`; } else { styles.left = coerceCssPixelValue(overlayPoint.x); } return styles; } /** * Gets the view properties of the trigger and overlay, including whether they are clipped * or completely outside the view of any of the strategy's scrollables. */ _getScrollVisibility() { // Note: needs fresh rects since the position could've changed. const originBounds = this._getOriginRect(); const overlayBounds = this._pane.getBoundingClientRect(); // TODO(jelbourn): instead of needing all of the client rects for these scrolling containers // every time, we should be able to use the scrollTop of the containers if the size of those // containers hasn't changed. const scrollContainerBounds = this._scrollables.map(scrollable => { return scrollable.getElementRef().nativeElement.getBoundingClientRect(); }); return { isOriginClipped: isElementClippedByScrolling(originBounds, scrollContainerBounds), isOriginOutsideView: isElementScrolledOutsideView(originBounds, scrollContainerBounds), isOverlayClipped: isElementClippedByScrolling(overlayBounds, scrollContainerBounds), isOverlayOutsideView: isElementScrolledOutsideView(overlayBounds, scrollContainerBounds), }; } /** Subtracts the amount that an element is overflowing on an axis from its length. */ _subtractOverflows(length, ...overflows) { return overflows.reduce((currentValue, currentOverflow) => { return currentValue - Math.max(currentOverflow, 0); }, length); } /** Narrows the given viewport rect by the current _viewportMargin. */ _getNarrowedViewportRect() { // We recalculate the viewport rect here ourselves, rather than using the ViewportRuler, // because we want to use the `clientWidth` and `clientHeight` as the base. The difference // being that the client properties don't include the scrollbar, as opposed to `innerWidth` // and `innerHeight` that do. This is necessary, because the overlay container uses // 100% `width` and `height` which don't include the scrollbar either. const width = this._document.documentElement.clientWidth; const height = this._document.documentElement.clientHeight; const scrollPosition = this._viewportRuler.getViewportScrollPosition(); return { top: scrollPosition.top + this._viewportMargin, left: scrollPosition.left + this._viewportMargin, right: scrollPosition.left + width - this._viewportMargin, bottom: scrollPosition.top + height - this._viewportMargin, width: width - (2 * this._viewportMargin), height: height - (2 * this._viewportMargin), }; } /** Whether the we're dealing with an RTL context */ _isRtl() { return this._overlayRef.getDirection() === 'rtl'; } /** Determines whether the overlay uses exact or flexible positioning. */ _hasExactPosition() { return !this._hasFlexibleDimensions || this._isPushed; } /** Retrieves the offset of a position along the x or y axis. */ _getOffset(position, axis) { if (axis === 'x') { // We don't do something like `position['offset' + axis]` in // order to avoid breking minifiers that rename properties. return position.offsetX == null ? this._offsetX : position.offsetX; } return position.offsetY == null ? this._offsetY : position.offsetY; } /** Validates that the current position match the expected values. */ _validatePositions() { if (typeof ngDevMode === 'undefined' || ngDevMode) { if (!this._preferredPositions.length) { throw Error('FlexibleConnectedPositionStrategy: At least one position is required.'); } // TODO(crisbeto): remove these once Angular's template type // checking is advanced enough to catch these cases. this._preferredPositions.forEach(pair => { validateHorizontalPosition('originX', pair.originX); validateVerticalPosition('originY', pair.originY); validateHorizontalPosition('overlayX', pair.overlayX); validateVerticalPosition('overlayY', pair.overlayY); }); } } /** Adds a single CSS class or an array of classes on the overlay panel. */ _addPanelClasses(cssClasses) { if (this._pane) { coerceArray(cssClasses).forEach(cssClass => { if (cssClass !== '' && this._appliedPanelClasses.indexOf(cssClass) === -1) { this._appliedPanelClasses.push(cssClass); this._pane.classList.add(cssClass); } }); } } /** Clears the classes that the position strategy has applied from the overlay panel. */ _clearPanelClasses() { if (this._pane) { this._appliedPanelClasses.forEach(cssClass => { this._pane.classList.remove(cssClass); }); this._appliedPanelClasses = []; } } /** Returns the ClientRect of the current origin. */ _getOriginRect() { const origin = this._origin; if (origin instanceof ElementRef) { return origin.nativeElement.getBoundingClientRect(); } // Check for Element so SVG elements are also supported. if (origin instanceof Element) { return origin.getBoundingClientRect(); } const width = origin.width || 0; const height = origin.height || 0; // If the origin is a point, return a client rect as if it was a 0x0 element at the point. return { top: origin.y, bottom: origin.y + height, left: origin.x, right: origin.x + width, height, width }; } } /** Shallow-extends a stylesheet object with another stylesheet object. */ function extendStyles(destination, source) { for (let key in source) { if (source.hasOwnProperty(key)) { destination[key] = source[key]; } } return destination; } /** * Extracts the pixel value as a number from a value, if it's a number * or a CSS pixel string (e.g. `1337px`). Otherwise returns null. */ function getPixelValue(input) { if (typeof input !== 'number' && input != null) { const [value, units] = input.split(cssUnitPattern); return (!units || units === 'px') ? parseFloat(value) : null; } return input || null; } /** * Gets a version of an element's bounding `ClientRect` where all the values are rounded down to * the nearest pixel. This allows us to account for the cases where there may be sub-pixel * deviations in the `ClientRect` returned by the browser (e.g. when zoomed in with a percentage * size, see #21350). */ function getRoundedBoundingClientRect(clientRect) { return { top: Math.floor(clientRect.top), right: Math.floor(clientRect.right), bottom: Math.floor(clientRect.bottom), left: Math.floor(clientRect.left), width: Math.floor(clientRect.width), height: Math.floor(clientRect.height) }; } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * A strategy for positioning overlays. Using this strategy, an overlay is given an * implicit position relative to some origin element. The relative position is defined in terms of * a point on the origin element that is connected to a point on the overlay element. For example, * a basic dropdown is connecting the bottom-left corner of the origin to the top-left corner * of the overlay. * @deprecated Use `FlexibleConnectedPositionStrategy` instead. * @breaking-change 8.0.0 */ class ConnectedPositionStrategy { constructor(originPos, overlayPos, connectedTo, viewportRuler, document, platform, overlayContainer) { /** Ordered list of preferred positions, from most to least desirable. */ this._preferredPositions = []; // Since the `ConnectedPositionStrategy` is deprecated and we don't want to maintain // the extra logic, we create an instance of the positioning strategy that has some // defaults that make it behave as the old position strategy and to which we'll // proxy all of the API calls. this._positionStrategy = new FlexibleConnectedPositionStrategy(connectedTo, viewportRuler, document, platform, overlayContainer) .withFlexibleDimensions(false) .withPush(false) .withViewportMargin(0); this.withFallbackPosition(originPos, overlayPos); this.onPositionChange = this._positionStrategy.positionChanges; } /** Ordered list of preferred positions, from most to least desirable. */ get positions() { return this._preferredPositions; } /** Attach this position strategy to an overlay. */ attach(overlayRef) { this._overlayRef = overlayRef; this._positionStrategy.attach(overlayRef); if (this._direction) { overlayRef.setDirection(this._direction); this._direction = null; } } /** Disposes all resources used by the position strategy. */ dispose() { this._positionStrategy.dispose(); } /** @docs-private */ detach() { this._positionStrategy.detach(); } /** * Updates the position of the overlay element, using whichever preferred position relative * to the origin fits on-screen. * @docs-private */ apply() { this._positionStrategy.apply(); } /** * Re-positions the overlay element with the trigger in its last calculated position, * even if a position higher in the "preferred positions" list would now fit. This * allows one to re-align the panel without changing the orientation of the panel. */ recalculateLastPosition() { this._positionStrategy.reapplyLastPosition(); } /** * Sets the list of Scrollable containers that host the origin element so that * on reposition we can evaluate if it or the overlay has been clipped or outside view. Every * Scrollable must be an ancestor element of the strategy's origin element. */ withScrollableContainers(scrollables) { this._positionStrategy.withScrollableContainers(scrollables); } /** * Adds a new preferred fallback position. * @param originPos * @param overlayPos */ withFallbackPosition(originPos, overlayPos, offsetX, offsetY) { const position = new ConnectionPositionPair(originPos, overlayPos, offsetX, offsetY); this._preferredPositions.push(position); this._positionStrategy.withPositions(this._preferredPositions); return this; } /** * Sets the layout direction so the overlay's position can be adjusted to match. * @param dir New layout direction. */ withDirection(dir) { // Since the direction might be declared before the strategy is attached, // we save the value in a temporary property and we'll transfer it to the // overlay ref on attachment. if (this._overlayRef) { this._overlayRef.setDirection(dir); } else { this._direction = dir; } return this; } /** * Sets an offset for the overlay's connection point on the x-axis * @param offset New offset in the X axis. */ withOffsetX(offset) { this._positionStrategy.withDefaultOffsetX(offset); return this; } /** * Sets an offset for the overlay's connection point on the y-axis * @param offset New offset in the Y axis. */ withOffsetY(offset) { this._positionStrategy.withDefaultOffsetY(offset); return this; } /** * Sets whether the overlay's position should be locked in after it is positioned * initially. When an overlay is locked in, it won't attempt to reposition itself * when the position is re-applied (e.g. when the user scrolls away). * @param isLocked Whether the overlay should locked in. */ withLockedPosition(isLocked) { this._positionStrategy.withLockedPosition(isLocked); return this; } /** * Overwrites the current set of positions with an array of new ones. * @param positions Position pairs to be set on the strategy. */ withPositions(positions) { this._preferredPositions = positions.slice(); this._positionStrategy.withPositions(this._preferredPositions); return this; } /** * Sets the origin element, relative to which to position the overlay. * @param origin Reference to the new origin element. */ setOrigin(origin) { this._positionStrategy.setOrigin(origin); return this; } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Class to be added to the overlay pane wrapper. */ const wrapperClass = 'cdk-global-overlay-wrapper'; /** * A strategy for positioning overlays. Using this strategy, an overlay is given an * explicit position relative to the browser's viewport. We use flexbox, instead of * transforms, in order to avoid issues with subpixel rendering which can cause the * element to become blurry. */ class GlobalPositionStrategy { constructor() { this._cssPosition = 'static'; this._topOffset = ''; this._bottomOffset = ''; this._leftOffset = ''; this._rightOffset = ''; this._alignItems = ''; this._justifyContent = ''; this._width = ''; this._height = ''; } attach(overlayRef) { const config = overlayRef.getConfig(); this._overlayRef = overlayRef; if (this._width && !config.width) { overlayRef.updateSize({ width: this._width }); } if (this._height && !config.height) { overlayRef.updateSize({ height: this._height }); } overlayRef.hostElement.classList.add(wrapperClass); this._isDisposed = false; } /** * Sets the top position of the overlay. Clears any previously set vertical position. * @param value New top offset. */ top(value = '') { this._bottomOffset = ''; this._topOffset = value; this._alignItems = 'flex-start'; return this; } /** * Sets the left position of the overlay. Clears any previously set horizontal position. * @param value New left offset. */ left(value = '') { this._rightOffset = ''; this._leftOffset = value; this._justifyContent = 'flex-start'; return this; } /** * Sets the bottom position of the overlay. Clears any previously set vertical position. * @param value New bottom offset. */ bottom(value = '') { this._topOffset = ''; this._bottomOffset = value; this._alignItems = 'flex-end'; return this; } /** * Sets the right position of the overlay. Clears any previously set horizontal position. * @param value New right offset. */ right(value = '') { this._leftOffset = ''; this._rightOffset = value; this._justifyContent = 'flex-end'; return this; } /** * Sets the overlay width and clears any previously set width. * @param value New width for the overlay * @deprecated Pass the `width` through the `OverlayConfig`. * @breaking-change 8.0.0 */ width(value = '') { if (this._overlayRef) { this._overlayRef.updateSize({ width: value }); } else { this._width = value; } return this; } /** * Sets the overlay height and clears any previously set height. * @param value New height for the overlay * @deprecated Pass the `height` through the `OverlayConfig`. * @breaking-change 8.0.0 */ height(value = '') { if (this._overlayRef) { this._overlayRef.updateSize({ height: value }); } else { this._height = value; } return this; } /** * Centers the overlay horizontally with an optional offset. * Clears any previously set horizontal position. * * @param offset Overlay offset from the horizontal center. */ centerHorizontally(offset = '') { this.left(offset); this._justifyContent = 'center'; return this; } /** * Centers the overlay vertically with an optional offset. * Clears any previously set vertical position. * * @param offset Overlay offset from the vertical center. */ centerVertically(offset = '') { this.top(offset); this._alignItems = 'center'; return this; } /** * Apply the position to the element. * @docs-private */ apply() { // Since the overlay ref applies the strategy asynchronously, it could // have been disposed before it ends up being applied. If that is the // case, we shouldn't do anything. if (!this._overlayRef || !this._overlayRef.hasAttached()) { return; } const styles = this._overlayRef.overlayElement.style; const parentStyles = this._overlayRef.hostElement.style; const config = this._overlayRef.getConfig(); const { width, height, maxWidth, maxHeight } = config; const shouldBeFlushHorizontally = (width === '100%' || width === '100vw') && (!maxWidth || maxWidth === '100%' || maxWidth === '100vw'); const shouldBeFlushVertically = (height === '100%' || height === '100vh') && (!maxHeight || maxHeight === '100%' || maxHeight === '100vh'); styles.position = this._cssPosition; styles.marginLeft = shouldBeFlushHorizontally ? '0' : this._leftOffset; styles.marginTop = shouldBeFlushVertically ? '0' : this._topOffset; styles.marginBottom = this._bottomOffset; styles.marginRight = this._rightOffset; if (shouldBeFlushHorizontally) { parentStyles.justifyContent = 'flex-start'; } else if (this._justifyContent === 'center') { parentStyles.justifyContent = 'center'; } else if (this._overlayRef.getConfig().direction === 'rtl') { // In RTL the browser will invert `flex-start` and `flex-end` automatically, but we // don't want that because our positioning is explicitly `left` and `right`, hence // why we do another inversion to ensure that the overlay stays in the same position. // TODO: reconsider this if we add `start` and `end` methods. if (this._justifyContent === 'flex-start') { parentStyles.justifyContent = 'flex-end'; } else if (this._justifyContent === 'flex-end') { parentStyles.justifyContent = 'flex-start'; } } else { parentStyles.justifyContent = this._justifyContent; } parentStyles.alignItems = shouldBeFlushVertically ? 'flex-start' : this._alignItems; } /** * Cleans up the DOM changes from the position strategy. * @docs-private */ dispose() { if (this._isDisposed || !this._overlayRef) { return; } const styles = this._overlayRef.overlayElement.style; const parent = this._overlayRef.hostElement; const parentStyles = parent.style; parent.classList.remove(wrapperClass); parentStyles.justifyContent = parentStyles.alignItems = styles.marginTop = styles.marginBottom = styles.marginLeft = styles.marginRight = styles.position = ''; this._overlayRef = null; this._isDisposed = true; } } /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Builder for overlay position strategy. */ class OverlayPositionBuilder { constructor(_viewportRuler, _document, _platform, _overlayContainer) { this._viewportRuler = _viewportRuler; this._document = _document; this._platform = _platform; this._overlayContainer = _overlayContainer; } /** * Creates a global position strategy. */ global() { return new GlobalPositionStrategy(); } /** * Creates a relative position strategy. * @param elementRef * @param originPos * @param overlayPos * @deprecated Use `flexibleConnectedTo` instead. * @breaking-change 8.0.0 */ connectedTo(elementRef, originPos, overlayPos) { return new ConnectedPositionStrategy(originPos, overlayPos, elementRef, this._viewportRuler, this._document, this._platform, this._overlayContainer); } /** * Creates a flexible position strategy. * @param origin Origin relative to which to position the overlay. */ flexibleConnectedTo(origin) { return new FlexibleConnectedPositionStrategy(origin, this._viewportRuler, this._document, this._platform, this._overlayContainer); } } OverlayPositionBuilder.ɵprov = i0.ɵɵdefineInjectable({ factory: function OverlayPositionBuilder_Factory() { return new OverlayPositionBuilder(i0.ɵɵinject(i1.ViewportRuler), i0.ɵɵinject(i1$1.DOCUMENT), i0.ɵɵinject(i2.Platform), i0.ɵɵinject(OverlayContainer)); }, token: OverlayPositionBuilder, providedIn: "root" }); OverlayPositionBuilder.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; OverlayPositionBuilder.ctorParameters = () => [ { type: ViewportRuler }, { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: Platform }, { type: OverlayContainer } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Next overlay unique ID. */ let nextUniqueId = 0; // Note that Overlay is *not* scoped to the app root because of the ComponentFactoryResolver // which needs to be different depending on where OverlayModule is imported. /** * Service to create Overlays. Overlays are dynamically added pieces of floating UI, meant to be * used as a low-level building block for other components. Dialogs, tooltips, menus, * selects, etc. can all be built using overlays. The service should primarily be used by authors * of re-usable components rather than developers building end-user applications. * * An overlay *is* a PortalOutlet, so any kind of Portal can be loaded into one. */ class Overlay { constructor( /** Scrolling strategies that can be used when creating an overlay. */ scrollStrategies, _overlayContainer, _componentFactoryResolver, _positionBuilder, _keyboardDispatcher, _injector, _ngZone, _document, _directionality, _location, _outsideClickDispatcher) { this.scrollStrategies = scrollStrategies; this._overlayContainer = _overlayContainer; this._componentFactoryResolver = _componentFactoryResolver; this._positionBuilder = _positionBuilder; this._keyboardDispatcher = _keyboardDispatcher; this._injector = _injector; this._ngZone = _ngZone; this._document = _document; this._directionality = _directionality; this._location = _location; this._outsideClickDispatcher = _outsideClickDispatcher; } /** * Creates an overlay. * @param config Configuration applied to the overlay. * @returns Reference to the created overlay. */ create(config) { const host = this._createHostElement(); const pane = this._createPaneElement(host); const portalOutlet = this._createPortalOutlet(pane); const overlayConfig = new OverlayConfig(config); overlayConfig.direction = overlayConfig.direction || this._directionality.value; return new OverlayRef(portalOutlet, host, pane, overlayConfig, this._ngZone, this._keyboardDispatcher, this._document, this._location, this._outsideClickDispatcher); } /** * Gets a position builder that can be used, via fluent API, * to construct and configure a position strategy. * @returns An overlay position builder. */ position() { return this._positionBuilder; } /** * Creates the DOM element for an overlay and appends it to the overlay container. * @returns Newly-created pane element */ _createPaneElement(host) { const pane = this._document.createElement('div'); pane.id = `cdk-overlay-${nextUniqueId++}`; pane.classList.add('cdk-overlay-pane'); host.appendChild(pane); return pane; } /** * Creates the host element that wraps around an overlay * and can be used for advanced positioning. * @returns Newly-create host element. */ _createHostElement() { const host = this._document.createElement('div'); this._overlayContainer.getContainerElement().appendChild(host); return host; } /** * Create a DomPortalOutlet into which the overlay content can be loaded. * @param pane The DOM element to turn into a portal outlet. * @returns A portal outlet for the given DOM element. */ _createPortalOutlet(pane) { // We have to resolve the ApplicationRef later in order to allow people // to use overlay-based providers during app initialization. if (!this._appRef) { this._appRef = this._injector.get(ApplicationRef); } return new DomPortalOutlet(pane, this._componentFactoryResolver, this._appRef, this._injector, this._document); } } Overlay.decorators = [ { type: Injectable } ]; Overlay.ctorParameters = () => [ { type: ScrollStrategyOptions }, { type: OverlayContainer }, { type: ComponentFactoryResolver }, { type: OverlayPositionBuilder }, { type: OverlayKeyboardDispatcher }, { type: Injector }, { type: NgZone }, { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: Directionality }, { type: Location }, { type: OverlayOutsideClickDispatcher } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** Default set of positions for the overlay. Follows the behavior of a dropdown. */ const defaultPositionList = [ { originX: 'start', originY: 'bottom', overlayX: 'start', overlayY: 'top' }, { originX: 'start', originY: 'top', overlayX: 'start', overlayY: 'bottom' }, { originX: 'end', originY: 'top', overlayX: 'end', overlayY: 'bottom' }, { originX: 'end', originY: 'bottom', overlayX: 'end', overlayY: 'top' } ]; /** Injection token that determines the scroll handling while the connected overlay is open. */ const CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY = new InjectionToken('cdk-connected-overlay-scroll-strategy'); /** * Directive applied to an element to make it usable as an origin for an Overlay using a * ConnectedPositionStrategy. */ class CdkOverlayOrigin { constructor( /** Reference to the element on which the directive is applied. */ elementRef) { this.elementRef = elementRef; } } CdkOverlayOrigin.decorators = [ { type: Directive, args: [{ selector: '[cdk-overlay-origin], [overlay-origin], [cdkOverlayOrigin]', exportAs: 'cdkOverlayOrigin', },] } ]; CdkOverlayOrigin.ctorParameters = () => [ { type: ElementRef } ]; /** * Directive to facilitate declarative creation of an * Overlay using a FlexibleConnectedPositionStrategy. */ class CdkConnectedOverlay { // TODO(jelbourn): inputs for size, scroll behavior, animation, etc. constructor(_overlay, templateRef, viewContainerRef, scrollStrategyFactory, _dir) { this._overlay = _overlay; this._dir = _dir; this._hasBackdrop = false; this._lockPosition = false; this._growAfterOpen = false; this._flexibleDimensions = false; this._push = false; this._backdropSubscription = Subscription.EMPTY; this._attachSubscription = Subscription.EMPTY; this._detachSubscription = Subscription.EMPTY; this._positionSubscription = Subscription.EMPTY; /** Margin between the overlay and the viewport edges. */ this.viewportMargin = 0; /** Whether the overlay is open. */ this.open = false; /** Whether the overlay can be closed by user interaction. */ this.disableClose = false; /** Event emitted when the backdrop is clicked. */ this.backdropClick = new EventEmitter(); /** Event emitted when the position has changed. */ this.positionChange = new EventEmitter(); /** Event emitted when the overlay has been attached. */ this.attach = new EventEmitter(); /** Event emitted when the overlay has been detached. */ this.detach = new EventEmitter(); /** Emits when there are keyboard events that are targeted at the overlay. */ this.overlayKeydown = new EventEmitter(); /** Emits when there are mouse outside click events that are targeted at the overlay. */ this.overlayOutsideClick = new EventEmitter(); this._templatePortal = new TemplatePortal(templateRef, viewContainerRef); this._scrollStrategyFactory = scrollStrategyFactory; this.scrollStrategy = this._scrollStrategyFactory(); } /** The offset in pixels for the overlay connection point on the x-axis */ get offsetX() { return this._offsetX; } set offsetX(offsetX) { this._offsetX = offsetX; if (this._position) { this._updatePositionStrategy(this._position); } } /** The offset in pixels for the overlay connection point on the y-axis */ get offsetY() { return this._offsetY; } set offsetY(offsetY) { this._offsetY = offsetY; if (this._position) { this._updatePositionStrategy(this._position); } } /** Whether or not the overlay should attach a backdrop. */ get hasBackdrop() { return this._hasBackdrop; } set hasBackdrop(value) { this._hasBackdrop = coerceBooleanProperty(value); } /** Whether or not the overlay should be locked when scrolling. */ get lockPosition() { return this._lockPosition; } set lockPosition(value) { this._lockPosition = coerceBooleanProperty(value); } /** Whether the overlay's width and height can be constrained to fit within the viewport. */ get flexibleDimensions() { return this._flexibleDimensions; } set flexibleDimensions(value) { this._flexibleDimensions = coerceBooleanProperty(value); } /** Whether the overlay can grow after the initial open when flexible positioning is turned on. */ get growAfterOpen() { return this._growAfterOpen; } set growAfterOpen(value) { this._growAfterOpen = coerceBooleanProperty(value); } /** Whether the overlay can be pushed on-screen if none of the provided positions fit. */ get push() { return this._push; } set push(value) { this._push = coerceBooleanProperty(value); } /** The associated overlay reference. */ get overlayRef() { return this._overlayRef; } /** The element's layout direction. */ get dir() { return this._dir ? this._dir.value : 'ltr'; } ngOnDestroy() { this._attachSubscription.unsubscribe(); this._detachSubscription.unsubscribe(); this._backdropSubscription.unsubscribe(); this._positionSubscription.unsubscribe(); if (this._overlayRef) { this._overlayRef.dispose(); } } ngOnChanges(changes) { if (this._position) { this._updatePositionStrategy(this._position); this._overlayRef.updateSize({ width: this.width, minWidth: this.minWidth, height: this.height, minHeight: this.minHeight, }); if (changes['origin'] && this.open) { this._position.apply(); } } if (changes['open']) { this.open ? this._attachOverlay() : this._detachOverlay(); } } /** Creates an overlay */ _createOverlay() { if (!this.positions || !this.positions.length) { this.positions = defaultPositionList; } const overlayRef = this._overlayRef = this._overlay.create(this._buildConfig()); this._attachSubscription = overlayRef.attachments().subscribe(() => this.attach.emit()); this._detachSubscription = overlayRef.detachments().subscribe(() => this.detach.emit()); overlayRef.keydownEvents().subscribe((event) => { this.overlayKeydown.next(event); if (event.keyCode === ESCAPE && !this.disableClose && !hasModifierKey(event)) { event.preventDefault(); this._detachOverlay(); } }); this._overlayRef.outsidePointerEvents().subscribe((event) => { this.overlayOutsideClick.next(event); }); } /** Builds the overlay config based on the directive's inputs */ _buildConfig() { const positionStrategy = this._position = this.positionStrategy || this._createPositionStrategy(); const overlayConfig = new OverlayConfig({ direction: this._dir, positionStrategy, scrollStrategy: this.scrollStrategy, hasBackdrop: this.hasBackdrop }); if (this.width || this.width === 0) { overlayConfig.width = this.width; } if (this.height || this.height === 0) { overlayConfig.height = this.height; } if (this.minWidth || this.minWidth === 0) { overlayConfig.minWidth = this.minWidth; } if (this.minHeight || this.minHeight === 0) { overlayConfig.minHeight = this.minHeight; } if (this.backdropClass) { overlayConfig.backdropClass = this.backdropClass; } if (this.panelClass) { overlayConfig.panelClass = this.panelClass; } return overlayConfig; } /** Updates the state of a position strategy, based on the values of the directive inputs. */ _updatePositionStrategy(positionStrategy) { const positions = this.positions.map(currentPosition => ({ originX: currentPosition.originX, originY: currentPosition.originY, overlayX: currentPosition.overlayX, overlayY: currentPosition.overlayY, offsetX: currentPosition.offsetX || this.offsetX, offsetY: currentPosition.offsetY || this.offsetY, panelClass: currentPosition.panelClass || undefined, })); return positionStrategy .setOrigin(this.origin.elementRef) .withPositions(positions) .withFlexibleDimensions(this.flexibleDimensions) .withPush(this.push) .withGrowAfterOpen(this.growAfterOpen) .withViewportMargin(this.viewportMargin) .withLockedPosition(this.lockPosition) .withTransformOriginOn(this.transformOriginSelector); } /** Returns the position strategy of the overlay to be set on the overlay config */ _createPositionStrategy() { const strategy = this._overlay.position().flexibleConnectedTo(this.origin.elementRef); this._updatePositionStrategy(strategy); return strategy; } /** Attaches the overlay and subscribes to backdrop clicks if backdrop exists */ _attachOverlay() { if (!this._overlayRef) { this._createOverlay(); } else { // Update the overlay size, in case the directive's inputs have changed this._overlayRef.getConfig().hasBackdrop = this.hasBackdrop; } if (!this._overlayRef.hasAttached()) { this._overlayRef.attach(this._templatePortal); } if (this.hasBackdrop) { this._backdropSubscription = this._overlayRef.backdropClick().subscribe(event => { this.backdropClick.emit(event); }); } else { this._backdropSubscription.unsubscribe(); } this._positionSubscription.unsubscribe(); // Only subscribe to `positionChanges` if requested, because putting // together all the information for it can be expensive. if (this.positionChange.observers.length > 0) { this._positionSubscription = this._position.positionChanges .pipe(takeWhile(() => this.positionChange.observers.length > 0)) .subscribe(position => { this.positionChange.emit(position); if (this.positionChange.observers.length === 0) { this._positionSubscription.unsubscribe(); } }); } } /** Detaches the overlay and unsubscribes to backdrop clicks if backdrop exists */ _detachOverlay() { if (this._overlayRef) { this._overlayRef.detach(); } this._backdropSubscription.unsubscribe(); this._positionSubscription.unsubscribe(); } } CdkConnectedOverlay.decorators = [ { type: Directive, args: [{ selector: '[cdk-connected-overlay], [connected-overlay], [cdkConnectedOverlay]', exportAs: 'cdkConnectedOverlay' },] } ]; CdkConnectedOverlay.ctorParameters = () => [ { type: Overlay }, { type: TemplateRef }, { type: ViewContainerRef }, { type: undefined, decorators: [{ type: Inject, args: [CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY,] }] }, { type: Directionality, decorators: [{ type: Optional }] } ]; CdkConnectedOverlay.propDecorators = { origin: [{ type: Input, args: ['cdkConnectedOverlayOrigin',] }], positions: [{ type: Input, args: ['cdkConnectedOverlayPositions',] }], positionStrategy: [{ type: Input, args: ['cdkConnectedOverlayPositionStrategy',] }], offsetX: [{ type: Input, args: ['cdkConnectedOverlayOffsetX',] }], offsetY: [{ type: Input, args: ['cdkConnectedOverlayOffsetY',] }], width: [{ type: Input, args: ['cdkConnectedOverlayWidth',] }], height: [{ type: Input, args: ['cdkConnectedOverlayHeight',] }], minWidth: [{ type: Input, args: ['cdkConnectedOverlayMinWidth',] }], minHeight: [{ type: Input, args: ['cdkConnectedOverlayMinHeight',] }], backdropClass: [{ type: Input, args: ['cdkConnectedOverlayBackdropClass',] }], panelClass: [{ type: Input, args: ['cdkConnectedOverlayPanelClass',] }], viewportMargin: [{ type: Input, args: ['cdkConnectedOverlayViewportMargin',] }], scrollStrategy: [{ type: Input, args: ['cdkConnectedOverlayScrollStrategy',] }], open: [{ type: Input, args: ['cdkConnectedOverlayOpen',] }], disableClose: [{ type: Input, args: ['cdkConnectedOverlayDisableClose',] }], transformOriginSelector: [{ type: Input, args: ['cdkConnectedOverlayTransformOriginOn',] }], hasBackdrop: [{ type: Input, args: ['cdkConnectedOverlayHasBackdrop',] }], lockPosition: [{ type: Input, args: ['cdkConnectedOverlayLockPosition',] }], flexibleDimensions: [{ type: Input, args: ['cdkConnectedOverlayFlexibleDimensions',] }], growAfterOpen: [{ type: Input, args: ['cdkConnectedOverlayGrowAfterOpen',] }], push: [{ type: Input, args: ['cdkConnectedOverlayPush',] }], backdropClick: [{ type: Output }], positionChange: [{ type: Output }], attach: [{ type: Output }], detach: [{ type: Output }], overlayKeydown: [{ type: Output }], overlayOutsideClick: [{ type: Output }] }; /** @docs-private */ function CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER_FACTORY(overlay) { return () => overlay.scrollStrategies.reposition(); } /** @docs-private */ const CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER = { provide: CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY, deps: [Overlay], useFactory: CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER_FACTORY, }; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ class OverlayModule { } OverlayModule.decorators = [ { type: NgModule, args: [{ imports: [BidiModule, PortalModule, ScrollingModule], exports: [CdkConnectedOverlay, CdkOverlayOrigin, ScrollingModule], declarations: [CdkConnectedOverlay, CdkOverlayOrigin], providers: [ Overlay, CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER, ], },] } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Alternative to OverlayContainer that supports correct displaying of overlay elements in * Fullscreen mode * https://developer.mozilla.org/en-US/docs/Web/API/Element/requestFullScreen * * Should be provided in the root component. */ class FullscreenOverlayContainer extends OverlayContainer { constructor(_document, platform) { super(_document, platform); } ngOnDestroy() { super.ngOnDestroy(); if (this._fullScreenEventName && this._fullScreenListener) { this._document.removeEventListener(this._fullScreenEventName, this._fullScreenListener); } } _createContainer() { super._createContainer(); this._adjustParentForFullscreenChange(); this._addFullscreenChangeListener(() => this._adjustParentForFullscreenChange()); } _adjustParentForFullscreenChange() { if (!this._containerElement) { return; } const fullscreenElement = this.getFullscreenElement(); const parent = fullscreenElement || this._document.body; parent.appendChild(this._containerElement); } _addFullscreenChangeListener(fn) { const eventName = this._getEventName(); if (eventName) { if (this._fullScreenListener) { this._document.removeEventListener(eventName, this._fullScreenListener); } this._document.addEventListener(eventName, fn); this._fullScreenListener = fn; } } _getEventName() { if (!this._fullScreenEventName) { const _document = this._document; if (_document.fullscreenEnabled) { this._fullScreenEventName = 'fullscreenchange'; } else if (_document.webkitFullscreenEnabled) { this._fullScreenEventName = 'webkitfullscreenchange'; } else if (_document.mozFullScreenEnabled) { this._fullScreenEventName = 'mozfullscreenchange'; } else if (_document.msFullscreenEnabled) { this._fullScreenEventName = 'MSFullscreenChange'; } } return this._fullScreenEventName; } /** * When the page is put into fullscreen mode, a specific element is specified. * Only that element and its children are visible when in fullscreen mode. */ getFullscreenElement() { const _document = this._document; return _document.fullscreenElement || _document.webkitFullscreenElement || _document.mozFullScreenElement || _document.msFullscreenElement || null; } } FullscreenOverlayContainer.ɵprov = i0.ɵɵdefineInjectable({ factory: function FullscreenOverlayContainer_Factory() { return new FullscreenOverlayContainer(i0.ɵɵinject(i1$1.DOCUMENT), i0.ɵɵinject(i2.Platform)); }, token: FullscreenOverlayContainer, providedIn: "root" }); FullscreenOverlayContainer.decorators = [ { type: Injectable, args: [{ providedIn: 'root' },] } ]; FullscreenOverlayContainer.ctorParameters = () => [ { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: Platform } ]; /** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ /** * Generated bundle index. Do not edit. */ export { BlockScrollStrategy, CdkConnectedOverlay, CdkOverlayOrigin, CloseScrollStrategy, ConnectedOverlayPositionChange, ConnectedPositionStrategy, ConnectionPositionPair, FlexibleConnectedPositionStrategy, FullscreenOverlayContainer, GlobalPositionStrategy, NoopScrollStrategy, Overlay, OverlayConfig, OverlayContainer, OverlayKeyboardDispatcher, OverlayModule, OverlayOutsideClickDispatcher, OverlayPositionBuilder, OverlayRef, RepositionScrollStrategy, ScrollStrategyOptions, ScrollingVisibility, validateHorizontalPosition, validateVerticalPosition, CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY as ɵangular_material_src_cdk_overlay_overlay_a, CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER_FACTORY as ɵangular_material_src_cdk_overlay_overlay_b, CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_PROVIDER as ɵangular_material_src_cdk_overlay_overlay_c, BaseOverlayDispatcher as ɵangular_material_src_cdk_overlay_overlay_d }; //# sourceMappingURL=overlay.js.map