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fix(form-field): run change detection when prefix or suffix changes (#10670)

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This commit is contained in:
mmalerba
2018-04-05 08:19:05 -07:00
committed by Jeremy Elbourn
parent 95dba5917e
commit 515cc06f52
1 changed files with 5 additions and 7 deletions
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src/lib/form-field/form-field.ts
+5 -7
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@@ -33,7 +33,7 @@ import {
MAT_LABEL_GLOBAL_OPTIONS,
mixinColor,
} from '@angular/material/core';
import {fromEvent} from 'rxjs';
import {EMPTY, fromEvent, merge} from 'rxjs';
import {startWith, take} from 'rxjs/operators';
import {MatError} from './error';
import {matFormFieldAnimations} from './form-field-animations';
@@ -246,12 +246,10 @@ export class MatFormField extends _MatFormFieldMixinBase
this._changeDetectorRef.markForCheck();
});
let ngControl = this._control.ngControl;
if (ngControl && ngControl.valueChanges) {
ngControl.valueChanges.subscribe(() => {
this._changeDetectorRef.markForCheck();
});
}
// Run change detection if the value, prefix, or suffix changes.
const valueChanges = this._control.ngControl && this._control.ngControl.valueChanges || EMPTY;
merge(valueChanges, this._prefixChildren.changes, this._suffixChildren.changes)
.subscribe(() => this._changeDetectorRef.markForCheck());
// Re-validate when the number of hints changes.
this._hintChildren.changes.pipe(startWith(null)).subscribe(() => {