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fix(cdk/text-field): Long multiline textfield focus issue #30312

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Merged
merged 1 commit into from
Mar 19, 2025
Merged

fix(cdk/text-field): Long multiline textfield focus issue #30312

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4 changes: 4 additions & 0 deletions src/cdk/text-field/autosize.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -117,6 +117,8 @@ export class CdkTextareaAutosize implements AfterViewInit, DoCheck, OnDestroy {
private _cachedLineHeight?: number;
/** Cached height of a textarea with only the placeholder. */
private _cachedPlaceholderHeight?: number;
/** Cached scroll top of a textarea */
private _cachedScrollTop: number;

/** Used to reference correct document/window */
protected _document? = inject(DOCUMENT, {optional: true});
Expand Down Expand Up @@ -303,6 +305,7 @@ export class CdkTextareaAutosize implements AfterViewInit, DoCheck, OnDestroy {

this._cacheTextareaLineHeight();
this._cacheTextareaPlaceholderHeight();
this._cachedScrollTop = this._textareaElement.scrollTop;

// If we haven't determined the line-height yet, we know we're still hidden and there's no point
// in checking the height of the textarea.
Expand Down Expand Up @@ -367,6 +370,7 @@ export class CdkTextareaAutosize implements AfterViewInit, DoCheck, OnDestroy {
// it to receive focus on IE and Edge.
if (!this._destroyed.isStopped && this._hasFocus) {
textarea.setSelectionRange(selectionStart, selectionEnd);
textarea.scrollTop = this._cachedScrollTop;
}
}
}
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