fix: overlapping of stepper-button and value

.changeset/little-days-wash.md

@@ -0,0 +1,5 @@
+---
+'@siemens/ix': patch
+---
+
+Fix initial overlapping between value and end slots on `ix-input`, `ix-number-input` and `ix-date-input`

packages/angular-test-app/src/preview-examples/input-types.css

@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Siemens AG
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+/*
+ * Styles get overwritten by html-test-app css files each build or dev task.
+ * If you want to modify the example styles do this only inside the html-test-app
+ */
+
+ix-input {
+  margin-bottom: 1rem;
+  width: 11rem;
+}

packages/angular-test-app/src/preview-examples/input-types.ts

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024 Siemens AG
+ * SPDX-FileCopyrightText: 2025 Siemens AG
  *
  * SPDX-License-Identifier: MIT
  *
@@ -11,6 +11,7 @@ import { Component } from '@angular/core';
 
 @Component({
   selector: 'app-example',
-  templateUrl: './input-types.html'
+  templateUrl: './input-types.html',
+  styleUrls: ['./input-types.css'],
 })
 export default class InputTypes {}

packages/core/src/components/date-input/date-input.tsx

@@ -24,7 +24,11 @@ import {
 import { DateTime } from 'luxon';
 import { dropdownController } from '../dropdown/dropdown-controller';
 import { SlotEnd, SlotStart } from '../input/input.fc';
-import { adjustPaddingForStartAndEnd } from '../input/input.util';
+import {
+  DisposableChangesAndVisibilityObservers,
+  addDisposableChangesAndVisibilityObservers,
+  adjustPaddingForStartAndEnd,
+} from '../input/input.util';
 import {
   ClassMutationObserver,
   HookValidationLifecycle,
@@ -174,6 +178,8 @@ export class DateInput implements IxInputFieldComponent<string> {
   private classObserver?: ClassMutationObserver;
   private invalidReason?: string;
 
+  private disposableChangesAndVisibilityObservers?: DisposableChangesAndVisibilityObservers;
+
   updateFormInternalValue(value: string): void {
     this.formInternals.setFormValue(value);
     this.value = value;
@@ -183,6 +189,12 @@ export class DateInput implements IxInputFieldComponent<string> {
     this.classObserver = createClassMutationObserver(this.hostElement, () =>
       this.checkClassList()
     );
+
+    this.disposableChangesAndVisibilityObservers =
+      addDisposableChangesAndVisibilityObservers(
+        this.hostElement,
+        this.updatePaddings.bind(this)
+      );
   }
 
   componentWillLoad(): void {
@@ -197,10 +209,6 @@ export class DateInput implements IxInputFieldComponent<string> {
     this.updateFormInternalValue(this.value);
   }
 
-  componentDidRender(): void {
-    this.updatePaddings();
-  }
-
   private updatePaddings() {
     adjustPaddingForStartAndEnd(
       this.slotStartRef.current,
@@ -210,9 +218,8 @@ export class DateInput implements IxInputFieldComponent<string> {
   }
 
   disconnectedCallback(): void {
-    if (this.classObserver) {
-      this.classObserver.destroy();
-    }
+    this.classObserver?.destroy();
+    this.disposableChangesAndVisibilityObservers?.();
   }
 
   @Watch('value')

packages/core/src/components/input/input.tsx

@@ -30,8 +30,10 @@ import {
 import { makeRef } from '../utils/make-ref';
 import { InputElement, SlotEnd, SlotStart } from './input.fc';
 import {
+  addDisposableChangesAndVisibilityObservers,
   adjustPaddingForStartAndEnd,
   checkAllowedKeys,
+  DisposableChangesAndVisibilityObservers,
   getAriaAttributesForInput,
   mapValidationResult,
   onInputBlur,
@@ -174,6 +176,8 @@ export class Input implements IxInputFieldComponent<string> {
 
   private readonly inputId = `input-${inputIds++}`;
 
+  private disposableChangesAndVisibilityObservers?: DisposableChangesAndVisibilityObservers;
+
   @HookValidationLifecycle()
   updateClassMappings(result: ValidationResults) {
     mapValidationResult(this, result);
@@ -189,8 +193,12 @@ export class Input implements IxInputFieldComponent<string> {
     this.inputType = this.type;
   }
 
-  componentDidRender() {
-    this.updatePaddings();
+  connectedCallback(): void {
+    this.disposableChangesAndVisibilityObservers =
+      addDisposableChangesAndVisibilityObservers(
+        this.hostElement,
+        this.updatePaddings.bind(this)
+      );
   }
 
   private updatePaddings() {
@@ -201,6 +209,10 @@ export class Input implements IxInputFieldComponent<string> {
     );
   }
 
+  disconnectedCallback(): void {
+    this.disposableChangesAndVisibilityObservers?.();
+  }
+
   updateFormInternalValue(value: string) {
     this.formInternals.setFormValue(value);
     this.value = value;

packages/core/src/components/input/input.util.ts

@@ -14,6 +14,7 @@ import {
   ValidationResults,
   shouldSuppressInternalValidation,
 } from '../utils/input';
+import { createMutationObserver } from '../utils/mutation-observer';
 import { convertToRemString } from '../utils/rwd.util';
 import { generateUUID } from '../utils/uuid';
 import { shakeInput } from './input.animation';
@@ -152,3 +153,39 @@ export function getAriaAttributesForInput(
   }
   return inputAria;
 }
+
+export type DisposableChangesAndVisibilityObservers = () => void;
+
+export const addDisposableChangesAndVisibilityObservers = (
+  element: HTMLElement,
+  callback: () => void
+): DisposableChangesAndVisibilityObservers => {
+  const intersectionObserver = observeElementUntilVisible(element, callback);
+  const mutationObserver = createMutationObserver(callback);
+
+  mutationObserver.observe(element, {
+    subtree: true,
+    attributes: true,
+  });
+
+  return () => {
+    intersectionObserver.disconnect();
+    mutationObserver.disconnect();
+  };
+};
+
+function observeElementUntilVisible(
+  hostElement: HTMLElement,
+  updateCallback: () => void
+): IntersectionObserver {
+  const intersectionObserver = new IntersectionObserver((entries) => {
+    entries.forEach((entry) => {
+      if (entry.isIntersecting) {
+        updateCallback();
+      }
+    });
+  });
+
+  intersectionObserver.observe(hostElement);
+  return intersectionObserver;
+}

packages/core/src/components/input/number-input.tsx

@@ -14,11 +14,11 @@ import {
   Element,
   Event,
   EventEmitter,
+  h,
   Host,
   Method,
   Prop,
   State,
-  h,
 } from '@stencil/core';
 import {
   HookValidationLifecycle,
@@ -28,9 +28,11 @@ import {
 import { makeRef } from '../utils/make-ref';
 import { InputElement, SlotEnd, SlotStart } from './input.fc';
 import {
+  addDisposableChangesAndVisibilityObservers,
   adjustPaddingForStartAndEnd,
   checkAllowedKeys,
   checkInternalValidity,
+  DisposableChangesAndVisibilityObservers,
   mapValidationResult,
   onInputBlur,
 } from './input.util';
@@ -169,6 +171,8 @@ export class NumberInput implements IxInputFieldComponent<number> {
   private readonly slotStartRef = makeRef<HTMLDivElement>();
   private readonly numberInputId = `number-input-${numberInputIds++}`;
 
+  private disposableChangesAndVisibilityObservers?: DisposableChangesAndVisibilityObservers;
+
   @HookValidationLifecycle()
   updateClassMappings(result: ValidationResults) {
     mapValidationResult(this, result);
@@ -178,8 +182,16 @@ export class NumberInput implements IxInputFieldComponent<number> {
     this.updateFormInternalValue(this.value);
   }
 
-  componentDidRender() {
-    this.updatePaddings();
+  connectedCallback() {
+    this.disposableChangesAndVisibilityObservers =
+      addDisposableChangesAndVisibilityObservers(
+        this.hostElement,
+        this.updatePaddings.bind(this)
+      );
+  }
+
+  disconnectedCallback() {
+    this.disposableChangesAndVisibilityObservers?.();
   }
 
   private updatePaddings() {
@@ -260,6 +272,7 @@ export class NumberInput implements IxInputFieldComponent<number> {
               slotStartRef={this.slotStartRef}
               onSlotChange={() => this.updatePaddings()}
             ></SlotStart>
+
             <InputElement
               id={this.numberInputId}
               readonly={this.readonly}

packages/core/src/tests/date-input/basic/index.html

@@ -0,0 +1,41 @@
+<!--
+SPDX-FileCopyrightText: 2025 Siemens AG
+
+SPDX-License-Identifier: MIT
+-->
+
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=5.0"
+    />
+    <title>Date Input Test</title>
+    <style>
+      .date-input-wrapper {
+        padding: 1rem;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="date-input-wrapper">
+      <h4>Default</h4>
+      <ix-date-input></ix-date-input>
+
+      <h4>Disabled</h4>
+      <ix-date-input value='1970/01/01' disabled></ix-date-input>
+
+      <h4>Label</h4>
+      <ix-date-input
+        label='Begin'
+        name='begin'
+        helper-text='Some helper text'
+        value='1970/01/01'
+      ></ix-date-input>
+
+    </div>
+    <script src="http://127.0.0.1:8080/scripts/e2e/load-e2e-runtime.js"></script>
+  </body>
+</html>

packages/core/src/tests/date-input/date-input.e2e.ts

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Siemens AG
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import { expect } from '@playwright/test';
+import { regressionTest } from '@utils/test';
+
+regressionTest.describe('date-input', () => {
+  regressionTest('basic', async ({ page }) => {
+    await page.goto('date-input/basic');
+    await expect(page).toHaveScreenshot();
+  });
+});

packages/core/src/tests/input-common/dynamic/index.html

@@ -0,0 +1,58 @@
+<!--
+SPDX-FileCopyrightText: 2025 Siemens AG
+SPDX-License-Identifier: MIT
+-->
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=5.0"
+    />
+    <title>Common dynamic test for inputs</title>
+    <style>
+      .input-wrapper {
+        padding: 1rem;
+      }
+      .input-container {
+        display: none;
+        margin: 1rem;
+      }
+      .display-none {
+        display: none;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="input-wrapper">
+      <ix-button onclick="displayInputs()">Display inputs</ix-button>
+      <div class="input-container" id="input-container">
+        <ix-input value="Lorem ipsum">
+          <ix-icon-button slot="start" icon="star" size="24"></ix-icon-button>
+          <ix-icon slot="end" name="info" class="display-none"></ix-icon>
+        </ix-input>
+      </div>
+      <div class="input-container" id="number-input-container">
+        <ix-number-input show-stepper-buttons value="0">
+          <ix-icon slot="end" name="info" class="display-none"></ix-icon>
+        </ix-number-input>
+      </div>
+      <div class="input-container" id="date-input-container">
+        <ix-date-input>
+          <ix-icon slot="end" name="info" class="display-none"></ix-icon>
+        </ix-date-input>
+      </div>
+    </div>
+
+    <script>
+      function displayInputs() {
+        const containers = document.getElementsByClassName('input-container');
+        for (const container of containers) {
+          container.style.display = 'block';
+        }
+      }
+    </script>
+    <script src="http://127.0.0.1:8080/scripts/e2e/load-e2e-runtime.js"></script>
+  </body>
+</html>