From 582c534413628d2a806a56ed6b821a0a9df3f6cb Mon Sep 17 00:00:00 2001
From: Kristiyan Kostadinov <crisbeto@abv.bg>
Date: Fri, 20 Jun 2025 09:50:58 +0200
Subject: [PATCH] fix(material/input): revert wheel workaround

Reverts the workaround from #29074, because it appears to make the behavior inconsistent between browsers and users don't have an easy way to opt out.

Instead of adding the event from Material, users that care about this behavior can add a `wheel` event themselves.

Fixes #31372.
---
 src/material/input/input.ts | 32 --------------------------------
 1 file changed, 32 deletions(-)

diff --git a/src/material/input/input.ts b/src/material/input/input.ts
index b286d3aad979..5b45db32da37 100644
--- a/src/material/input/input.ts
+++ b/src/material/input/input.ts
@@ -214,7 +214,6 @@ export class MatInput
     return this._type;
   }
   set type(value: string) {
-    const prevType = this._type;
     this._type = value || 'text';
     this._validateType();
 
@@ -224,10 +223,6 @@ export class MatInput
     if (!this._isTextarea && getSupportedInputTypes().has(this._type)) {
       (this._elementRef.nativeElement as HTMLInputElement).type = this._type;
     }
-
-    if (this._type !== prevType) {
-      this._ensureWheelDefaultBehavior();
-    }
   }
   protected _type = 'text';
 
@@ -610,33 +605,6 @@ export class MatInput
     }
   };
 
-  private _webkitBlinkWheelListener = (): void => {
-    // This is a noop function and is used to enable mouse wheel input
-    // on number inputs
-    // on blink and webkit browsers.
-  };
-
-  /**
-   * In blink and webkit browsers a focused number input does not increment or decrement its value
-   * on mouse wheel interaction unless a wheel event listener is attached to it or one of its
-   * ancestors or a passive wheel listener is attached somewhere in the DOM. For example: Hitting
-   * a tooltip once enables the mouse wheel input for all number inputs as long as it exists. In
-   * order to get reliable and intuitive behavior we apply a wheel event on our own thus making
-   * sure increment and decrement by mouse wheel works every time.
-   * @docs-private
-   */
-  private _ensureWheelDefaultBehavior(): void {
-    this._cleanupWebkitWheel?.();
-
-    if (this._type === 'number' && (this._platform.BLINK || this._platform.WEBKIT)) {
-      this._cleanupWebkitWheel = this._renderer.listen(
-        this._elementRef.nativeElement,
-        'wheel',
-        this._webkitBlinkWheelListener,
-      );
-    }
-  }
-
   /** Gets the value to set on the `readonly` attribute. */
   protected _getReadonlyAttribute(): string | null {
     if (this._isNativeSelect) {