dialog.scss

@use '@material/dialog' as mdc-dialog;
@use '@material/dialog/variables' as mdc-dialog-variables;
@use '@material/dialog/dialog-theme' as mdc-dialog-theme;
@use './mdc-dialog-structure-overrides';
@use '../core/mdc-helpers/mdc-helpers';

// Theme map with values for variables that will be overriden in the theme.
// MDC's theming system requires non-null values for the slots to be inserted
// and included as default values.
$_dialog-initial-theme: (
  // Color
  container-color: white,
  container-elevation: 24,
  container-shadow-color: black,
  with-divider-divider-color: black,
  subhead-color: black,
  supporting-text-color: black,

  // Typography
  subhead-font: 'Arial',
  subhead-line-height: 14px,
  subhead-size: 14px,
  subhead-weight: 500,
  subhead-tracking: 1px,
  supporting-text-font: 'Arial',
  supporting-text-line-height: 14px,
  supporting-text-size: 14px,
  supporting-text-weight: 500,
  supporting-text-tracking: 1px,

  // Structure
  container-shape: mdc-dialog-variables.$shape-radius,
);

// Dialog content max height. This has been copied from the standard dialog
// and is needed to make the dialog content scrollable.
$mat-dialog-content-max-height: 65vh !default;
// Dialog button horizontal margin. This has been extracted from MDC as they
// don't expose this value as variable.
$mat-dialog-button-horizontal-margin: 8px !default;

@include mdc-helpers.disable-mdc-fallback-declarations {
  @include mdc-dialog.static-styles($query: mdc-helpers.$mdc-base-styles-query);
}

@include mdc-dialog-structure-overrides.private-dialog-structure-overrides(
  $mat-dialog-content-max-height);

.mat-mdc-dialog-container {
  // Apply the theming slots to the container using an initial set of
  // values that will be overridden in the theme styles.
  @include mdc-helpers.disable-mdc-fallback-declarations {
    @include mdc-dialog-theme.theme-styles($_dialog-initial-theme);
  }

  // The dialog container is focusable. We remove the default outline shown in browsers.
  outline: 0;

  .mdc-dialog__container {
    transition-duration: var(--mat-dialog-transition-duration, 0ms);
  }

  // Angular Material supports disabling all animations when NoopAnimationsModule is imported.
  // TODO(devversion): Look into using MDC's Sass queries to separate the animation styles and
  // conditionally add them. Consider the size cost and churn when deciding whether to switch.
  &._mat-animation-noopable .mdc-dialog__container {
    transition: none;
  }
}

// MDC sets the display behavior for title and actions, but not for content. Since we support
// using the `mdc-dialog__content` as custom element, we need to set the element to `block`.
.mat-mdc-dialog-content {
  display: block;
}

.mat-mdc-dialog-actions {
  // For backwards compatibility, actions align at start by default. MDC usually
  // aligns actions at the end of the container.
  justify-content: start;

  // .mat-mdc-dialog-actions-align-{center|end} are set by directive input "align"
  // [align='center'] and [align='right'] are kept for backwards compability
  &.mat-mdc-dialog-actions-align-center, &[align='center'] {
    justify-content: center;
  }
  &.mat-mdc-dialog-actions-align-end, &[align='end'] {
    justify-content: flex-end;
  }

  // MDC applies horizontal margin to buttons that have an explicit `mdc-dialog__button`
  // class applied. We can't set this class for projected buttons that consumers of the
  // dialog create. To workaround this, we select all Material Design buttons we know and
  // add the necessary spacing similar to how MDC applies spacing.
  .mat-button-base + .mat-button-base,
  .mat-mdc-button-base + .mat-mdc-button-base {
    margin-left: $mat-dialog-button-horizontal-margin;

    [dir='rtl'] & {
      margin-left: 0;
      margin-right: $mat-dialog-button-horizontal-margin;
    }
  }
}