Is there a way to customize the appearance of a disabled Mat-Expansion-Panel? I have buttons in the header that toggle the panel, so I'm considering disabling the panel itself instead. However, when I disable the panel, all the items inside are greyed out. Is there a method to override or remove the disabled styling?
To fix the disabled expansion panel color, add the following snippet to your component style sheet:
::ng-deep .mat-expansion-panel-header[aria-disabled=true] {
color: rgba(0,0,0,.87);
}
According to a Stack Overflow response, it is recommended to continue using ::ng-deep until a suitable alternative is available.
What to use in place of ::ng-deep
To achieve a more polished look, especially following Material design principles, I suggest utilizing the built-in Material SCSS function and Material SCSS variable to keep your code clean.
::ng-deep mat-expansion-panel-header {
color: mat-color($accent);
}
Using [aria-disabled=true] is unnecessary when both the disabled true and false states should display the same color.
For further details, check out: https://material.angular.io/guide/theming
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