Styling the `mat-hint` in Angular Material for large blocks of text

Currently, I am undertaking a project in Angular 9 and utilizing Material design.

If you want to view a demo of my work, you can find it here: https://stackblitz.com/edit/mat-hint-styling-issue?file=src/app/app.component.html

In my project, I am using inputs with mat-hints. These hints typically consist of small snippets of text, but there is a chance that the text may be quite lengthy. As a result, I am looking for ways to make the mat-hint more responsive in such cases.

My preference would be for the mat-hint to display all the text without overflowing onto the next input field. At present, however, the text overflows as shown in this image: https://i.stack.imgur.com/ZrFVB.png I aim to have the text push the following input field down to accommodate its length. While I attempted changing the display property to block, it did not yield the desired outcome.

It is crucial that the styling changes do not impact the other mat-hint which displays "Required!".

If achieving the above goal proves challenging (without affecting "Required!" or requiring extensive SCSS modifications), I am open to implementing a max-height on the mat-hint and handling overflow text with ellipsis. Unfortunately, setting a max-height results in cut-off text without the desired ellipsis effect, even after including text-overflow: ellipsis.

Any recommendations on how I can make the styling more user-friendly and responsive are greatly appreciated! Thank you in advance for your insights and suggestions.

Answer №1

I encountered the issue where my mat-hint was getting cut off after two lines. However, I found a solution by overriding the MAT_FORM_FIELD_DEFAULT_OPTIONS. By adding the provider and setting the subscriptSizing to dynamic, I was able to prevent any text from being cut off.

{ provide: MAT_FORM_FIELD_DEFAULT_OPTIONS, useValue: { subscriptSizing: 'dynamic' } }

Answer №2

To restore the mat-hint block to the document flow, simply change position: absolute to position: static:

:host ::ng-deep .mat-form-field-subscript-wrapper {
  position: static;
  margin-bottom: 15px;
}

Access Forked Stackblitz Here

Answer №3

To implement the desired styling, use the following CSS code:

mat-hint {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

For a practical example, visit this StackBlitz project

Answer №4

Implement this in your overall stylesheets if you are utilizing sass

.mat-mdc-form-field {
  .mat-mdc-form-field-hint-wrapper {
    position: static !important;
  }
}

Alternatively, use this code for plain css

.mat-mdc-form-field .mat-mdc-form-field-hint-wrapper {
    position: static !important; 
}

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