@material/snackbar/_mixins.scss

//
// Copyright 2018 Google Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//

@use '@material/feature-targeting/feature-targeting';
@use '@material/animation/functions' as animation-functions;
@use '@material/button/button-theme';
@use '@material/icon-button/icon-button-theme';
@use '@material/ripple/ripple-theme';
@use '@material/rtl/rtl';
@use '@material/dom/mixins' as dom-mixins;
@use '@material/typography/typography';
@use '@material/elevation/mixins' as elevation-mixins;
@use '@material/shape/mixins' as shape-mixins;
@use '@material/theme/theme';
@use './variables';

@mixin core-styles($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);
  $feat-animation: feature-targeting.create-target($query, animation);

  // postcss-bem-linter: define snackbar
  .mdc-snackbar {
    @include z-index(variables.$z-index, $query: $query);
    @include viewport-margin(variables.$viewport-margin-narrow, $query: $query);

    @include feature-targeting.targets($feat-structure) {
      display: none;
      position: fixed;
      right: 0;
      bottom: 0;
      left: 0;
      align-items: center;
      justify-content: center;
      box-sizing: border-box;

      // Ignore mouse events on the root layout element.
      pointer-events: none;

      // For some reason, iOS Safari displays a tap highlight on the entire snackbar element.
      // Mobile Safari only supports `rgba` values for this property; named values like
      // `transparent` are ignored. From Apple's docs:
      // > This property obeys the alpha value, if specified.
      // > If you don’t specify an alpha value, Safari on iOS applies a default alpha value to the color.
      // > To disable tap highlighting, set the alpha value to 0 (invisible).
      // > If you set the alpha value to 1.0 (opaque), the element is not visible when tapped.
      // See https://github.com/ben-eb/postcss-colormin/issues/1
      -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    }
  }

  @include fill-color(variables.$fill-color, $query: $query);
  @include label-ink-color(variables.$label-ink-color, $query: $query);
  @include min-width(variables.$min-width, $query: $query);
  @include max-width(variables.$max-width, $query: $query);
  @include elevation(variables.$elevation, $query: $query);
  @include shape-radius(variables.$shape-radius, $query: $query);

  .mdc-snackbar--opening,
  .mdc-snackbar--open,
  .mdc-snackbar--closing {
    @include feature-targeting.targets($feat-structure) {
      display: flex;
    }
  }

  .mdc-snackbar--open .mdc-snackbar__label,
  .mdc-snackbar--open .mdc-snackbar__actions {
    @include feature-targeting.targets($feat-structure) {
      visibility: visible;
    }
  }

  .mdc-snackbar--leading {
    @include position-leading($query: $query);
  }

  .mdc-snackbar--stacked {
    @include layout-stacked($query: $query);
  }

  .mdc-snackbar__surface {
    // 1px border around the snackbar surface for high contrast mode.
    &::before {
      @include dom-mixins.transparent-border($query: $query);
    }

    @include feature-targeting.targets($feat-structure) {
      @include rtl.reflexive-property(padding, 0, variables.$padding);

      display: flex;
      align-items: center;
      justify-content: flex-start;
      box-sizing: border-box;
      transform: scale(0.8);
      opacity: 0;
    }

    .mdc-snackbar--open & {
      @include feature-targeting.targets($feat-structure) {
        transform: scale(1);
        opacity: 1;
        pointer-events: auto; // Allow mouse events on surface element while snackbar is open
      }

      @include feature-targeting.targets($feat-animation) {
        transition: animation-functions.enter(
            opacity,
            variables.$enter-duration
          ),
          animation-functions.enter(transform, variables.$enter-duration);
      }
    }

    .mdc-snackbar--closing & {
      @include feature-targeting.targets($feat-structure) {
        transform: scale(1);
      }

      @include feature-targeting.targets($feat-animation) {
        transition: animation-functions.exit-permanent(
          opacity,
          variables.$exit-duration
        );
      }
    }
  }

  .mdc-snackbar__label {
    @include typography.typography(variables.$label-type-scale, $query: $query);

    @include feature-targeting.targets($feat-structure) {
      @include rtl.reflexive-property(padding, 16px, variables.$padding);

      width: 100%;
      flex-grow: 1;
      box-sizing: border-box;
      margin: 0;
      visibility: hidden;

      // 14px top/bottom padding needed to make the height 48px.
      padding-top: 14px;
      padding-bottom: 14px;
    }
  }

  // Used to prevent visual jank when announcing label text to screen readers.
  // See the `announce()` function in util.js for details.
  .mdc-snackbar__label::before {
    @include feature-targeting.targets($feat-structure) {
      display: inline;
      content: attr(data-mdc-snackbar-label-text);
    }
  }

  .mdc-snackbar__actions {
    @include feature-targeting.targets($feat-structure) {
      display: flex;
      flex-shrink: 0;
      align-items: center;
      box-sizing: border-box;
      visibility: hidden;
    }
  }

  .mdc-snackbar__action {
    @include button-theme.ink-color(
      variables.$action-ink-color,
      $query: $query
    );
    @include ripple-theme.states(variables.$action-ink-color, $query: $query);
  }

  .mdc-snackbar__dismiss {
    @include icon-button-theme.ink-color(
      variables.$dismiss-ink-color,
      $query: $query
    );
  }

  // Two selectors are needed to increase specificity above `.material-icons`.
  // stylelint-disable-next-line selector-class-pattern
  .mdc-snackbar__dismiss.mdc-snackbar__dismiss {
    @include icon-button-theme.size(
      variables.$dismiss-button-size,
      $query: $query
    );
    @include feature-targeting.targets($feat-structure) {
      font-size: variables.$dismiss-icon-size;
    }
  }

  .mdc-snackbar__action + .mdc-snackbar__dismiss {
    @include feature-targeting.targets($feat-structure) {
      @include rtl.reflexive-property(margin, variables.$padding, 0);
    }
  }
  // postcss-bem-linter: end
}

@mixin fill-color($color, $query: feature-targeting.all()) {
  $feat-color: feature-targeting.create-target($query, color);

  .mdc-snackbar__surface {
    @include feature-targeting.targets($feat-color) {
      @include theme.property(background-color, $color);
    }
  }
}

@mixin label-ink-color($color, $query: feature-targeting.all()) {
  $feat-color: feature-targeting.create-target($query, color);

  .mdc-snackbar__label {
    @include feature-targeting.targets($feat-color) {
      @include theme.property(color, $color);
    }
  }
}

@mixin shape-radius(
  $radius,
  $rtl-reflexive: false,
  $query: feature-targeting.all()
) {
  .mdc-snackbar__surface {
    @include shape-mixins.radius($radius, $rtl-reflexive, $query: $query);
  }
}

@mixin min-width(
  $min-width,
  $mobile-breakpoint: variables.$mobile-breakpoint,
  $query: feature-targeting.all()
) {
  $feat-structure: feature-targeting.create-target($query, structure);

  .mdc-snackbar__surface {
    @include feature-targeting.targets($feat-structure) {
      min-width: $min-width;

      // The first media query ensures that snackbars are always 100% width on mobile devices, as required by the spec.
      // The second media query prevents snackbars from being wider than the viewport for large min-width values.
      @media (max-width: $mobile-breakpoint), (max-width: $min-width) {
        min-width: 100%;
      }
    }
  }
}

@mixin max-width($max-width, $query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  .mdc-snackbar__surface {
    @include feature-targeting.targets($feat-structure) {
      max-width: $max-width;
    }
  }
}

@mixin elevation($z-index, $query: feature-targeting.all()) {
  .mdc-snackbar__surface {
    @include elevation-mixins.elevation($z-index, $query: $query);
  }
}

@mixin viewport-margin($margin, $query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    margin: $margin;
  }
}

@mixin z-index($z-index, $query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    z-index: $z-index;
  }
}

@mixin position-leading($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    justify-content: flex-start;
  }
}

@mixin layout-stacked($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  .mdc-snackbar__label {
    @include feature-targeting.targets($feat-structure) {
      @include rtl.reflexive-property(padding, 16px, 8px);
      padding-bottom: 12px;
    }
  }

  .mdc-snackbar__surface {
    @include feature-targeting.targets($feat-structure) {
      flex-direction: column;
      align-items: flex-start;
    }
  }

  .mdc-snackbar__actions {
    @include feature-targeting.targets($feat-structure) {
      align-self: flex-end;
      margin-bottom: variables.$padding;
    }
  }
}