@angular/material
Version:
Angular Material
267 lines • 36.7 kB
JavaScript
/**
* @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
*/
import { LiveAnnouncer } from '@angular/cdk/a11y';
import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout';
import { Overlay, OverlayConfig } from '@angular/cdk/overlay';
import { Inject, Injectable, InjectionToken, Injector, Optional, SkipSelf, TemplateRef, } from '@angular/core';
import { SimpleSnackBar } from './simple-snack-bar';
import { MatSnackBarContainer } from './snack-bar-container';
import { MAT_SNACK_BAR_DATA, MatSnackBarConfig } from './snack-bar-config';
import { MatSnackBarRef } from './snack-bar-ref';
import { ComponentPortal, TemplatePortal } from '@angular/cdk/portal';
import { takeUntil } from 'rxjs/operators';
import * as i0 from "@angular/core";
import * as i1 from "@angular/cdk/overlay";
import * as i2 from "@angular/cdk/a11y";
import * as i3 from "@angular/cdk/layout";
import * as i4 from "./snack-bar-config";
/** @docs-private */
export function MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY() {
return new MatSnackBarConfig();
}
/** Injection token that can be used to specify default snack bar. */
export const MAT_SNACK_BAR_DEFAULT_OPTIONS = new InjectionToken('mat-snack-bar-default-options', {
providedIn: 'root',
factory: MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY,
});
/**
* Service to dispatch Material Design snack bar messages.
*/
export class MatSnackBar {
/** Reference to the currently opened snackbar at *any* level. */
get _openedSnackBarRef() {
const parent = this._parentSnackBar;
return parent ? parent._openedSnackBarRef : this._snackBarRefAtThisLevel;
}
set _openedSnackBarRef(value) {
if (this._parentSnackBar) {
this._parentSnackBar._openedSnackBarRef = value;
}
else {
this._snackBarRefAtThisLevel = value;
}
}
constructor(_overlay, _live, _injector, _breakpointObserver, _parentSnackBar, _defaultConfig) {
this._overlay = _overlay;
this._live = _live;
this._injector = _injector;
this._breakpointObserver = _breakpointObserver;
this._parentSnackBar = _parentSnackBar;
this._defaultConfig = _defaultConfig;
/**
* Reference to the current snack bar in the view *at this level* (in the Angular injector tree).
* If there is a parent snack-bar service, all operations should delegate to that parent
* via `_openedSnackBarRef`.
*/
this._snackBarRefAtThisLevel = null;
/** The component that should be rendered as the snack bar's simple component. */
this.simpleSnackBarComponent = SimpleSnackBar;
/** The container component that attaches the provided template or component. */
this.snackBarContainerComponent = MatSnackBarContainer;
/** The CSS class to apply for handset mode. */
this.handsetCssClass = 'mat-mdc-snack-bar-handset';
}
/**
* Creates and dispatches a snack bar with a custom component for the content, removing any
* currently opened snack bars.
*
* @param component Component to be instantiated.
* @param config Extra configuration for the snack bar.
*/
openFromComponent(component, config) {
return this._attach(component, config);
}
/**
* Creates and dispatches a snack bar with a custom template for the content, removing any
* currently opened snack bars.
*
* @param template Template to be instantiated.
* @param config Extra configuration for the snack bar.
*/
openFromTemplate(template, config) {
return this._attach(template, config);
}
/**
* Opens a snackbar with a message and an optional action.
* @param message The message to show in the snackbar.
* @param action The label for the snackbar action.
* @param config Additional configuration options for the snackbar.
*/
open(message, action = '', config) {
const _config = { ...this._defaultConfig, ...config };
// Since the user doesn't have access to the component, we can
// override the data to pass in our own message and action.
_config.data = { message, action };
// Since the snack bar has `role="alert"`, we don't
// want to announce the same message twice.
if (_config.announcementMessage === message) {
_config.announcementMessage = undefined;
}
return this.openFromComponent(this.simpleSnackBarComponent, _config);
}
/**
* Dismisses the currently-visible snack bar.
*/
dismiss() {
if (this._openedSnackBarRef) {
this._openedSnackBarRef.dismiss();
}
}
ngOnDestroy() {
// Only dismiss the snack bar at the current level on destroy.
if (this._snackBarRefAtThisLevel) {
this._snackBarRefAtThisLevel.dismiss();
}
}
/**
* Attaches the snack bar container component to the overlay.
*/
_attachSnackBarContainer(overlayRef, config) {
const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;
const injector = Injector.create({
parent: userInjector || this._injector,
providers: [{ provide: MatSnackBarConfig, useValue: config }],
});
const containerPortal = new ComponentPortal(this.snackBarContainerComponent, config.viewContainerRef, injector);
const containerRef = overlayRef.attach(containerPortal);
containerRef.instance.snackBarConfig = config;
return containerRef.instance;
}
/**
* Places a new component or a template as the content of the snack bar container.
*/
_attach(content, userConfig) {
const config = { ...new MatSnackBarConfig(), ...this._defaultConfig, ...userConfig };
const overlayRef = this._createOverlay(config);
const container = this._attachSnackBarContainer(overlayRef, config);
const snackBarRef = new MatSnackBarRef(container, overlayRef);
if (content instanceof TemplateRef) {
const portal = new TemplatePortal(content, null, {
$implicit: config.data,
snackBarRef,
});
snackBarRef.instance = container.attachTemplatePortal(portal);
}
else {
const injector = this._createInjector(config, snackBarRef);
const portal = new ComponentPortal(content, undefined, injector);
const contentRef = container.attachComponentPortal(portal);
// We can't pass this via the injector, because the injector is created earlier.
snackBarRef.instance = contentRef.instance;
}
// Subscribe to the breakpoint observer and attach the mat-snack-bar-handset class as
// appropriate. This class is applied to the overlay element because the overlay must expand to
// fill the width of the screen for full width snackbars.
this._breakpointObserver
.observe(Breakpoints.HandsetPortrait)
.pipe(takeUntil(overlayRef.detachments()))
.subscribe(state => {
overlayRef.overlayElement.classList.toggle(this.handsetCssClass, state.matches);
});
if (config.announcementMessage) {
// Wait until the snack bar contents have been announced then deliver this message.
container._onAnnounce.subscribe(() => {
this._live.announce(config.announcementMessage, config.politeness);
});
}
this._animateSnackBar(snackBarRef, config);
this._openedSnackBarRef = snackBarRef;
return this._openedSnackBarRef;
}
/** Animates the old snack bar out and the new one in. */
_animateSnackBar(snackBarRef, config) {
// When the snackbar is dismissed, clear the reference to it.
snackBarRef.afterDismissed().subscribe(() => {
// Clear the snackbar ref if it hasn't already been replaced by a newer snackbar.
if (this._openedSnackBarRef == snackBarRef) {
this._openedSnackBarRef = null;
}
if (config.announcementMessage) {
this._live.clear();
}
});
if (this._openedSnackBarRef) {
// If a snack bar is already in view, dismiss it and enter the
// new snack bar after exit animation is complete.
this._openedSnackBarRef.afterDismissed().subscribe(() => {
snackBarRef.containerInstance.enter();
});
this._openedSnackBarRef.dismiss();
}
else {
// If no snack bar is in view, enter the new snack bar.
snackBarRef.containerInstance.enter();
}
// If a dismiss timeout is provided, set up dismiss based on after the snackbar is opened.
if (config.duration && config.duration > 0) {
snackBarRef.afterOpened().subscribe(() => snackBarRef._dismissAfter(config.duration));
}
}
/**
* Creates a new overlay and places it in the correct location.
* @param config The user-specified snack bar config.
*/
_createOverlay(config) {
const overlayConfig = new OverlayConfig();
overlayConfig.direction = config.direction;
let positionStrategy = this._overlay.position().global();
// Set horizontal position.
const isRtl = config.direction === 'rtl';
const isLeft = config.horizontalPosition === 'left' ||
(config.horizontalPosition === 'start' && !isRtl) ||
(config.horizontalPosition === 'end' && isRtl);
const isRight = !isLeft && config.horizontalPosition !== 'center';
if (isLeft) {
positionStrategy.left('0');
}
else if (isRight) {
positionStrategy.right('0');
}
else {
positionStrategy.centerHorizontally();
}
// Set horizontal position.
if (config.verticalPosition === 'top') {
positionStrategy.top('0');
}
else {
positionStrategy.bottom('0');
}
overlayConfig.positionStrategy = positionStrategy;
return this._overlay.create(overlayConfig);
}
/**
* Creates an injector to be used inside of a snack bar component.
* @param config Config that was used to create the snack bar.
* @param snackBarRef Reference to the snack bar.
*/
_createInjector(config, snackBarRef) {
const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;
return Injector.create({
parent: userInjector || this._injector,
providers: [
{ provide: MatSnackBarRef, useValue: snackBarRef },
{ provide: MAT_SNACK_BAR_DATA, useValue: config.data },
],
});
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.0-next.2", ngImport: i0, type: MatSnackBar, deps: [{ token: i1.Overlay }, { token: i2.LiveAnnouncer }, { token: i0.Injector }, { token: i3.BreakpointObserver }, { token: MatSnackBar, optional: true, skipSelf: true }, { token: MAT_SNACK_BAR_DEFAULT_OPTIONS }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.0-next.2", ngImport: i0, type: MatSnackBar, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.0-next.2", ngImport: i0, type: MatSnackBar, decorators: [{
type: Injectable,
args: [{ providedIn: 'root' }]
}], ctorParameters: () => [{ type: i1.Overlay }, { type: i2.LiveAnnouncer }, { type: i0.Injector }, { type: i3.BreakpointObserver }, { type: MatSnackBar, decorators: [{
type: Optional
}, {
type: SkipSelf
}] }, { type: i4.MatSnackBarConfig, decorators: [{
type: Inject,
args: [MAT_SNACK_BAR_DEFAULT_OPTIONS]
}] }] });
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {LiveAnnouncer} from '@angular/cdk/a11y';\nimport {BreakpointObserver, Breakpoints} from '@angular/cdk/layout';\nimport {ComponentType, Overlay, OverlayConfig, OverlayRef} from '@angular/cdk/overlay';\nimport {\n  ComponentRef,\n  EmbeddedViewRef,\n  Inject,\n  Injectable,\n  InjectionToken,\n  Injector,\n  OnDestroy,\n  Optional,\n  SkipSelf,\n  TemplateRef,\n} from '@angular/core';\nimport {SimpleSnackBar, TextOnlySnackBar} from './simple-snack-bar';\nimport {MatSnackBarContainer} from './snack-bar-container';\nimport {MAT_SNACK_BAR_DATA, MatSnackBarConfig} from './snack-bar-config';\nimport {MatSnackBarRef} from './snack-bar-ref';\nimport {ComponentPortal, TemplatePortal} from '@angular/cdk/portal';\nimport {takeUntil} from 'rxjs/operators';\n\n/** @docs-private */\nexport function MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY(): MatSnackBarConfig {\n  return new MatSnackBarConfig();\n}\n\n/** Injection token that can be used to specify default snack bar. */\nexport const MAT_SNACK_BAR_DEFAULT_OPTIONS = new InjectionToken<MatSnackBarConfig>(\n  'mat-snack-bar-default-options',\n  {\n    providedIn: 'root',\n    factory: MAT_SNACK_BAR_DEFAULT_OPTIONS_FACTORY,\n  },\n);\n\n/**\n * Service to dispatch Material Design snack bar messages.\n */\n@Injectable({providedIn: 'root'})\nexport class MatSnackBar implements OnDestroy {\n  /**\n   * Reference to the current snack bar in the view *at this level* (in the Angular injector tree).\n   * If there is a parent snack-bar service, all operations should delegate to that parent\n   * via `_openedSnackBarRef`.\n   */\n  private _snackBarRefAtThisLevel: MatSnackBarRef<any> | null = null;\n\n  /** The component that should be rendered as the snack bar's simple component. */\n  simpleSnackBarComponent = SimpleSnackBar;\n\n  /** The container component that attaches the provided template or component. */\n  snackBarContainerComponent = MatSnackBarContainer;\n\n  /** The CSS class to apply for handset mode. */\n  handsetCssClass = 'mat-mdc-snack-bar-handset';\n\n  /** Reference to the currently opened snackbar at *any* level. */\n  get _openedSnackBarRef(): MatSnackBarRef<any> | null {\n    const parent = this._parentSnackBar;\n    return parent ? parent._openedSnackBarRef : this._snackBarRefAtThisLevel;\n  }\n\n  set _openedSnackBarRef(value: MatSnackBarRef<any> | null) {\n    if (this._parentSnackBar) {\n      this._parentSnackBar._openedSnackBarRef = value;\n    } else {\n      this._snackBarRefAtThisLevel = value;\n    }\n  }\n\n  constructor(\n    private _overlay: Overlay,\n    private _live: LiveAnnouncer,\n    private _injector: Injector,\n    private _breakpointObserver: BreakpointObserver,\n    @Optional() @SkipSelf() private _parentSnackBar: MatSnackBar,\n    @Inject(MAT_SNACK_BAR_DEFAULT_OPTIONS) private _defaultConfig: MatSnackBarConfig,\n  ) {}\n\n  /**\n   * Creates and dispatches a snack bar with a custom component for the content, removing any\n   * currently opened snack bars.\n   *\n   * @param component Component to be instantiated.\n   * @param config Extra configuration for the snack bar.\n   */\n  openFromComponent<T, D = any>(\n    component: ComponentType<T>,\n    config?: MatSnackBarConfig<D>,\n  ): MatSnackBarRef<T> {\n    return this._attach(component, config) as MatSnackBarRef<T>;\n  }\n\n  /**\n   * Creates and dispatches a snack bar with a custom template for the content, removing any\n   * currently opened snack bars.\n   *\n   * @param template Template to be instantiated.\n   * @param config Extra configuration for the snack bar.\n   */\n  openFromTemplate(\n    template: TemplateRef<any>,\n    config?: MatSnackBarConfig,\n  ): MatSnackBarRef<EmbeddedViewRef<any>> {\n    return this._attach(template, config);\n  }\n\n  /**\n   * Opens a snackbar with a message and an optional action.\n   * @param message The message to show in the snackbar.\n   * @param action The label for the snackbar action.\n   * @param config Additional configuration options for the snackbar.\n   */\n  open(\n    message: string,\n    action: string = '',\n    config?: MatSnackBarConfig,\n  ): MatSnackBarRef<TextOnlySnackBar> {\n    const _config = {...this._defaultConfig, ...config};\n\n    // Since the user doesn't have access to the component, we can\n    // override the data to pass in our own message and action.\n    _config.data = {message, action};\n\n    // Since the snack bar has `role=\"alert\"`, we don't\n    // want to announce the same message twice.\n    if (_config.announcementMessage === message) {\n      _config.announcementMessage = undefined;\n    }\n\n    return this.openFromComponent(this.simpleSnackBarComponent, _config);\n  }\n\n  /**\n   * Dismisses the currently-visible snack bar.\n   */\n  dismiss(): void {\n    if (this._openedSnackBarRef) {\n      this._openedSnackBarRef.dismiss();\n    }\n  }\n\n  ngOnDestroy() {\n    // Only dismiss the snack bar at the current level on destroy.\n    if (this._snackBarRefAtThisLevel) {\n      this._snackBarRefAtThisLevel.dismiss();\n    }\n  }\n\n  /**\n   * Attaches the snack bar container component to the overlay.\n   */\n  private _attachSnackBarContainer(\n    overlayRef: OverlayRef,\n    config: MatSnackBarConfig,\n  ): MatSnackBarContainer {\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n    const injector = Injector.create({\n      parent: userInjector || this._injector,\n      providers: [{provide: MatSnackBarConfig, useValue: config}],\n    });\n\n    const containerPortal = new ComponentPortal(\n      this.snackBarContainerComponent,\n      config.viewContainerRef,\n      injector,\n    );\n    const containerRef: ComponentRef<MatSnackBarContainer> = overlayRef.attach(containerPortal);\n    containerRef.instance.snackBarConfig = config;\n    return containerRef.instance;\n  }\n\n  /**\n   * Places a new component or a template as the content of the snack bar container.\n   */\n  private _attach<T>(\n    content: ComponentType<T> | TemplateRef<T>,\n    userConfig?: MatSnackBarConfig,\n  ): MatSnackBarRef<T | EmbeddedViewRef<any>> {\n    const config = {...new MatSnackBarConfig(), ...this._defaultConfig, ...userConfig};\n    const overlayRef = this._createOverlay(config);\n    const container = this._attachSnackBarContainer(overlayRef, config);\n    const snackBarRef = new MatSnackBarRef<T | EmbeddedViewRef<any>>(container, overlayRef);\n\n    if (content instanceof TemplateRef) {\n      const portal = new TemplatePortal(content, null!, {\n        $implicit: config.data,\n        snackBarRef,\n      } as any);\n\n      snackBarRef.instance = container.attachTemplatePortal(portal);\n    } else {\n      const injector = this._createInjector(config, snackBarRef);\n      const portal = new ComponentPortal(content, undefined, injector);\n      const contentRef = container.attachComponentPortal<T>(portal);\n\n      // We can't pass this via the injector, because the injector is created earlier.\n      snackBarRef.instance = contentRef.instance;\n    }\n\n    // Subscribe to the breakpoint observer and attach the mat-snack-bar-handset class as\n    // appropriate. This class is applied to the overlay element because the overlay must expand to\n    // fill the width of the screen for full width snackbars.\n    this._breakpointObserver\n      .observe(Breakpoints.HandsetPortrait)\n      .pipe(takeUntil(overlayRef.detachments()))\n      .subscribe(state => {\n        overlayRef.overlayElement.classList.toggle(this.handsetCssClass, state.matches);\n      });\n\n    if (config.announcementMessage) {\n      // Wait until the snack bar contents have been announced then deliver this message.\n      container._onAnnounce.subscribe(() => {\n        this._live.announce(config.announcementMessage!, config.politeness);\n      });\n    }\n\n    this._animateSnackBar(snackBarRef, config);\n    this._openedSnackBarRef = snackBarRef;\n    return this._openedSnackBarRef;\n  }\n\n  /** Animates the old snack bar out and the new one in. */\n  private _animateSnackBar(snackBarRef: MatSnackBarRef<any>, config: MatSnackBarConfig) {\n    // When the snackbar is dismissed, clear the reference to it.\n    snackBarRef.afterDismissed().subscribe(() => {\n      // Clear the snackbar ref if it hasn't already been replaced by a newer snackbar.\n      if (this._openedSnackBarRef == snackBarRef) {\n        this._openedSnackBarRef = null;\n      }\n\n      if (config.announcementMessage) {\n        this._live.clear();\n      }\n    });\n\n    if (this._openedSnackBarRef) {\n      // If a snack bar is already in view, dismiss it and enter the\n      // new snack bar after exit animation is complete.\n      this._openedSnackBarRef.afterDismissed().subscribe(() => {\n        snackBarRef.containerInstance.enter();\n      });\n      this._openedSnackBarRef.dismiss();\n    } else {\n      // If no snack bar is in view, enter the new snack bar.\n      snackBarRef.containerInstance.enter();\n    }\n\n    // If a dismiss timeout is provided, set up dismiss based on after the snackbar is opened.\n    if (config.duration && config.duration > 0) {\n      snackBarRef.afterOpened().subscribe(() => snackBarRef._dismissAfter(config.duration!));\n    }\n  }\n\n  /**\n   * Creates a new overlay and places it in the correct location.\n   * @param config The user-specified snack bar config.\n   */\n  private _createOverlay(config: MatSnackBarConfig): OverlayRef {\n    const overlayConfig = new OverlayConfig();\n    overlayConfig.direction = config.direction;\n\n    let positionStrategy = this._overlay.position().global();\n    // Set horizontal position.\n    const isRtl = config.direction === 'rtl';\n    const isLeft =\n      config.horizontalPosition === 'left' ||\n      (config.horizontalPosition === 'start' && !isRtl) ||\n      (config.horizontalPosition === 'end' && isRtl);\n    const isRight = !isLeft && config.horizontalPosition !== 'center';\n    if (isLeft) {\n      positionStrategy.left('0');\n    } else if (isRight) {\n      positionStrategy.right('0');\n    } else {\n      positionStrategy.centerHorizontally();\n    }\n    // Set horizontal position.\n    if (config.verticalPosition === 'top') {\n      positionStrategy.top('0');\n    } else {\n      positionStrategy.bottom('0');\n    }\n\n    overlayConfig.positionStrategy = positionStrategy;\n    return this._overlay.create(overlayConfig);\n  }\n\n  /**\n   * Creates an injector to be used inside of a snack bar component.\n   * @param config Config that was used to create the snack bar.\n   * @param snackBarRef Reference to the snack bar.\n   */\n  private _createInjector<T>(config: MatSnackBarConfig, snackBarRef: MatSnackBarRef<T>): Injector {\n    const userInjector = config && config.viewContainerRef && config.viewContainerRef.injector;\n\n    return Injector.create({\n      parent: userInjector || this._injector,\n      providers: [\n        {provide: MatSnackBarRef, useValue: snackBarRef},\n        {provide: MAT_SNACK_BAR_DATA, useValue: config.data},\n      ],\n    });\n  }\n}\n"]}