_m2-outlined-text-field.scss

@use 'sass:map';
@use '../core/theming/inspection';
@use '../core/style/sass-utils';
@use '../core/tokens/m2-utils';

// The prefix used to generate the fully qualified name for tokens in this file.
$prefix: (mat, form-field-outlined);

// Tokens that can't be configured through Angular Material's current theming API,
// but may be in a future version of the theming API.
//
// Tokens that are available in MDC, but not used in Angular Material should be mapped to `null`.
// `null` indicates that we are intentionally choosing not to emit a slot or value for the token in
// our CSS.
@function get-unthemable-tokens() {
  @return (
    outline-width: 1px,
    focus-outline-width: 2px,
    container-shape: 4px,
  );
}

// Tokens that can be configured through Angular Material's color theming API.
@function get-color-tokens($theme) {
  $is-dark: inspection.get-theme-type($theme) == dark;
  $warn-color: inspection.get-theme-color($theme, warn);
  $color-tokens: private-get-color-palette-color-tokens($theme, primary);

  // Ideally we would derive all values directly from the theme, but it causes a lot of regressions
  // internally. For now we fall back to the old hardcoded behavior only for internal apps.
  $on-surface: if($is-dark, #fff, #000);
  $text-color-base: if(m2-utils.$private-is-internal-build, $on-surface,
    inspection.get-theme-color($theme, foreground, text, 1));
  $disabled-text-color-base: if(m2-utils.$private-is-internal-build, $on-surface,
    inspection.get-theme-color($theme, foreground, disabled-text, 1));
  $divider-base: if(m2-utils.$private-is-internal-build, $on-surface,
    inspection.get-theme-color($theme, foreground, divider, 1));

  @return map.merge($color-tokens, (
    label-text-color: sass-utils.safe-color-change($text-color-base, $alpha: 0.6),
    hover-label-text-color: sass-utils.safe-color-change($text-color-base, $alpha: 0.6),
    disabled-label-text-color:
      sass-utils.safe-color-change($disabled-text-color-base, $alpha: 0.38),

    input-text-color: sass-utils.safe-color-change($text-color-base, $alpha: 0.87),
    disabled-input-text-color:
      sass-utils.safe-color-change($disabled-text-color-base, $alpha: 0.38),
    input-text-placeholder-color: sass-utils.safe-color-change($text-color-base, $alpha: 0.6),

    error-caret-color: $warn-color,
    error-focus-label-text-color: $warn-color,
    error-label-text-color: $warn-color,
    error-hover-label-text-color: $warn-color,

    // Outline tokens
    outline-color: sass-utils.safe-color-change($divider-base, $alpha: 0.38),
    disabled-outline-color: sass-utils.safe-color-change($divider-base, $alpha: 0.06),
    hover-outline-color: sass-utils.safe-color-change($divider-base, $alpha: 0.87),
    error-focus-outline-color: $warn-color,
    error-hover-outline-color: $warn-color,
    error-outline-color: $warn-color,
  ));
}

// Generates the mapping for the properties that change based on the text field color.
@function private-get-color-palette-color-tokens($theme, $palette-name) {
  $palette-color: inspection.get-theme-color($theme, $palette-name);

  @return (
    caret-color: $palette-color,
    focus-outline-color: $palette-color,
    focus-label-text-color: sass-utils.safe-color-change($palette-color, $alpha: 0.87),
  );
}

// Tokens that can be configured through Angular Material's typography theming API.
@function get-typography-tokens($theme) {
  @return (
    label-text-font: inspection.get-theme-typography($theme, body-1, font-family),
    label-text-size: inspection.get-theme-typography($theme, body-1, font-size),
    label-text-tracking: inspection.get-theme-typography($theme, body-1, letter-spacing),
    label-text-weight: inspection.get-theme-typography($theme, body-1, font-weight),
  );
}

// Tokens that can be configured through Angular Material's density theming API.
@function get-density-tokens($theme) {
  @return ();
}

// Combines the tokens generated by the above functions into a single map with placeholder values.
// This is used to create token slots.
@function get-token-slots() {
  @return sass-utils.deep-merge-all(
      get-unthemable-tokens(),
      get-color-tokens(m2-utils.$placeholder-color-config),
      get-typography-tokens(m2-utils.$placeholder-typography-config),
      get-density-tokens(m2-utils.$placeholder-density-config)
  );
}