fix(material-experimental/mdc-list): support noop animations

src/material-experimental/mdc-list/list-base.ts

@@ -29,6 +29,7 @@ import {
   RippleTarget,
   setLines,
 } from '@angular/material-experimental/mdc-core';
+import {ANIMATION_MODULE_TYPE} from '@angular/platform-browser/animations';
 import {numbers} from '@material/ripple';
 import {Subscription} from 'rxjs';
 import {startWith} from 'rxjs/operators';
@@ -54,12 +55,16 @@ export abstract class MatListItemBase implements AfterContentInit, OnDestroy, Ri
   /** Host element for the list item. */
   _hostElement: HTMLElement;
 
+  /** Whether animations are disabled. */
+  _noopAnimations: boolean;
+
   @ContentChildren(MatListAvatarCssMatStyler, {descendants: false}) _avatars: QueryList<never>;
   @ContentChildren(MatListIconCssMatStyler, {descendants: false}) _icons: QueryList<never>;
 
   @Input()
   get disableRipple(): boolean {
-    return this.disabled || this._disableRipple || this._listBase.disableRipple;
+    return this.disabled || this._disableRipple || this._listBase.disableRipple ||
+           this._noopAnimations;
   }
   set disableRipple(value: boolean) { this._disableRipple = coerceBooleanProperty(value); }
   private _disableRipple: boolean = false;
@@ -90,12 +95,14 @@ export abstract class MatListItemBase implements AfterContentInit, OnDestroy, Ri
   constructor(public _elementRef: ElementRef<HTMLElement>, protected _ngZone: NgZone,
               private _listBase: MatListBase, private _platform: Platform,
               @Optional() @Inject(MAT_RIPPLE_GLOBAL_OPTIONS)
-                  globalRippleOptions?: RippleGlobalOptions) {
+                  globalRippleOptions?: RippleGlobalOptions,
+              @Optional() @Inject(ANIMATION_MODULE_TYPE) animationMode?: string) {
     // We have to clone the object, because we don't want to mutate a global value when we assign
     // the `animation` further down. The downside of doing this is that the ripple renderer won't
     // pick up dynamic changes to `disabled`, but it's not something we officially support.
     this.rippleConfig = {...(globalRippleOptions || {})};
     this._hostElement = this._elementRef.nativeElement;
+    this._noopAnimations = animationMode === 'NoopAnimations';
 
     if (!this.rippleConfig.animation) {
       this.rippleConfig.animation = {

src/material-experimental/mdc-list/list-option.scss

@@ -4,22 +4,29 @@
 @use '../../cdk/a11y';
 @use './list-option-trailing-avatar-compat';
 
-// The MDC-based list-option uses the MDC checkbox for the selection indicators.
-// We need to ensure that the checkbox styles are included for the list-option.
-@include mdc-checkbox.without-ripple($query: mdc-helpers.$mat-base-styles-query);
-
 // For compatibility with the non-MDC list, we support avatars that are shown at the end
 // of the list option. We create a class similar to MDC's `--trailing-icon` one.
 @include list-option-trailing-avatar-compat.core-styles($query: mdc-helpers.$mat-base-styles-query);
 
-// The internal checkbox is purely decorative, but because it's an `input`, the user can still
-// focus it by tabbing or clicking. Furthermore, `mat-list-option` has the `option` role which
-// doesn't allow a nested `input`. We use `display: none` both to remove it from the tab order
-// and to prevent focus from reaching it through the screen reader's forms mode. Ideally we'd
-// remove the `input` completely, but we can't because MDC uses a `:checked` selector to
-// toggle the selected styles.
-.mat-mdc-list-option .mdc-checkbox__native-control {
-  display: none;
+.mat-mdc-list-option {
+  // The MDC-based list-option uses the MDC checkbox for the selection indicators.
+  // We need to ensure that the checkbox styles are not included for the list-option.
+  @include mdc-checkbox.without-ripple(
+    $query: mdc-helpers.$mat-base-styles-without-animation-query);
+
+  &:not(._mat-animation-noopable) {
+    @include mdc-checkbox.without-ripple($query: animation);
+  }
+
+  // The internal checkbox is purely decorative, but because it's an `input`, the user can still
+  // focus it by tabbing or clicking. Furthermore, `mat-list-option` has the `option` role which
+  // doesn't allow a nested `input`. We use `display: none` both to remove it from the tab order
+  // and to prevent focus from reaching it through the screen reader's forms mode. Ideally we'd
+  // remove the `input` completely, but we can't because MDC uses a `:checked` selector to
+  // toggle the selected styles.
+  .mdc-checkbox__native-control {
+    display: none;
+  }
 }
 
 @include a11y.high-contrast(active, off) {

src/material-experimental/mdc-list/list-option.ts

@@ -32,6 +32,7 @@ import {
   RippleGlobalOptions,
   ThemePalette,
 } from '@angular/material-experimental/mdc-core';
+import {ANIMATION_MODULE_TYPE} from '@angular/platform-browser/animations';
 import {MatListBase, MatListItemBase} from './list-base';
 import {LIST_OPTION, ListOption, MatListOptionCheckboxPosition} from './list-option-types';
 
@@ -79,6 +80,7 @@ export interface SelectionList extends MatListBase {
     '[class.mdc-list-item--with-trailing-checkbox]': '_hasCheckboxAt("after")',
     '[class.mat-accent]': 'color !== "primary" && color !== "warn"',
     '[class.mat-warn]': 'color === "warn"',
+    '[class._mat-animation-noopable]': '_noopAnimations',
     '(blur)': '_handleBlur()',
   },
   templateUrl: 'list-option.html',
@@ -144,8 +146,9 @@ export class MatListOption extends MatListItemBase implements ListOption, OnInit
       platform: Platform,
       @Inject(SELECTION_LIST) public _selectionList: SelectionList,
       private _changeDetectorRef: ChangeDetectorRef,
-      @Optional() @Inject(MAT_RIPPLE_GLOBAL_OPTIONS) globalRippleOptions?: RippleGlobalOptions) {
-    super(element, ngZone, _selectionList, platform, globalRippleOptions);
+      @Optional() @Inject(MAT_RIPPLE_GLOBAL_OPTIONS) globalRippleOptions?: RippleGlobalOptions,
+      @Optional() @Inject(ANIMATION_MODULE_TYPE) animationMode?: string) {
+    super(element, ngZone, _selectionList, platform, globalRippleOptions, animationMode);
 
     // By default, we mark all options as unselected. The MDC list foundation will
     // automatically update the attribute based on selection. Note that we need to

src/material-experimental/mdc-list/list.ts

@@ -24,6 +24,7 @@ import {
   MAT_RIPPLE_GLOBAL_OPTIONS,
   RippleGlobalOptions,
 } from '@angular/material-experimental/mdc-core';
+import {ANIMATION_MODULE_TYPE} from '@angular/platform-browser/animations';
 import {MatListBase, MatListItemBase} from './list-base';
 
 @Component({
@@ -54,6 +55,7 @@ export class MatList extends MatListBase {}
     // the trailing meta class. Note that we also add this even if there is no projected `meta`
     // content. This is because there is no good way to check for remaining projected content.
     '[class.mdc-list-item--with-trailing-meta]': 'lines.length !== 0',
+    '[class._mat-animation-noopable]': '_noopAnimations',
   },
   templateUrl: 'list-item.html',
   encapsulation: ViewEncapsulation.None,
@@ -69,7 +71,8 @@ export class MatListItem extends MatListItemBase {
     ngZone: NgZone,
     listBase: MatListBase,
     platform: Platform,
-    @Optional() @Inject(MAT_RIPPLE_GLOBAL_OPTIONS) globalRippleOptions?: RippleGlobalOptions) {
-    super(element, ngZone, listBase, platform, globalRippleOptions);
+    @Optional() @Inject(MAT_RIPPLE_GLOBAL_OPTIONS) globalRippleOptions?: RippleGlobalOptions,
+    @Optional() @Inject(ANIMATION_MODULE_TYPE) animationMode?: string) {
+    super(element, ngZone, listBase, platform, globalRippleOptions, animationMode);
   }
 }