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Can not disable custom MatFormFieldControl with FormControl with mat-autocomplete

See original GitHub issue

Bug, feature request, or proposal:

Potential bug

What is the expected behavior?

A component implementing MatFormFieldControl with a mat-autocomplete can be disabled correctly via a FormControl.

What is the current behavior?

It is not possible to have a custom MatFormFieldControl implementation with a mat-autocomplete and have the input disabled via a FormControl. Notice in the StackBlitz application, it is possible to open the autocomplete overlay of the field and select an option even when the field is set to disabled.

If the FormControl is removed from the input element in custom-input and a binding to [disabled] is used, the behaviour works as expected. The reason I am using a FormControl here is to automatically apply validators to the input, so they are not needed to be added manually by the consumer of the form field everywhere it is used.

It does however work correctly when adding matInput to the input element inside custom-input. Is this the intended behaviour? The CDK Docs here do not include it.

What are the steps to reproduce?

https://stackblitz.com/edit/custom-mat-form-field-with-auto-complete

What is the use-case or motivation for changing an existing behavior?

To be able to disable the input when an autocomplete is attached, or be clearer in the docs when matInput is needed still.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Latest from NPM (see StackBlitz)

Issue Analytics

State:
Created 6 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

1reaction

crisbetocommented, Nov 30, 2017

Sorry, now I see what you mean. I’ll take a look at it.

0reactions

angular-automatic-lock-bot[bot]commented, Sep 7, 2019

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