Bootstrap5 (#17)

* Bootstrap5 migration

dev/scss/bootstrap/mixins/_forms.scss

@@ -1,33 +1,7 @@
-// Form control focus state
-//
-// Generate a customized focus state and for any input with the specified color,
-// which defaults to the `$input-focus-border-color` variable.
-//
-// We highly encourage you to not customize the default value, but instead use
-// this to tweak colors on an as-needed basis. This aesthetic change is based on
-// WebKit's default styles, but applicable to a wider range of browsers. Its
-// usability and accessibility should be taken into account with any change.
-//
-// Example usage: change the default blue border and shadow to white for better
-// contrast against a dark gray background.
-@mixin form-control-focus($ignore-warning: false) {
-  &:focus {
-    color: $input-focus-color;
-    background-color: $input-focus-bg;
-    border-color: $input-focus-border-color;
-    outline: 0;
-    @if $enable-shadows {
-      @include box-shadow($input-box-shadow, $input-focus-box-shadow);
-    } @else {
-      // Avoid using mixin so we can pass custom focus shadow properly
-      box-shadow: $input-focus-box-shadow;
-    }
-  }
-  @include deprecate("The `form-control-focus()` mixin", "v4.4.0", "v5", $ignore-warning);
-}
-
 // This mixin uses an `if()` technique to be compatible with Dart Sass
 // See https://github.com/sass/sass/issues/1873#issuecomment-152293725 for more details
+
+// scss-docs-start form-validation-mixins
 @mixin form-validation-state-selector($state) {
   @if ($state == "valid" or $state == "invalid") {
     .was-validated #{if(&, "&", "")}:#{$state},
@@ -41,19 +15,26 @@
   }
 }
 
-@mixin form-validation-state($state, $color, $icon) {
+@mixin form-validation-state(
+  $state,
+  $color,
+  $icon,
+  $tooltip-color: color-contrast($color),
+  $tooltip-bg-color: rgba($color, $form-feedback-tooltip-opacity),
+  $focus-box-shadow: 0 0 $input-btn-focus-blur $input-focus-width rgba($color, $input-btn-focus-color-opacity)
+) {
   .#{$state}-feedback {
     display: none;
     width: 100%;
     margin-top: $form-feedback-margin-top;
     @include font-size($form-feedback-font-size);
+    font-style: $form-feedback-font-style;
     color: $color;
   }
 
   .#{$state}-tooltip {
     position: absolute;
     top: 100%;
-    left: 0;
     z-index: 5;
     display: none;
     max-width: 100%; // Contain to parent when possible
@@ -61,16 +42,9 @@
     margin-top: .1rem;
     @include font-size($form-feedback-tooltip-font-size);
     line-height: $form-feedback-tooltip-line-height;
-    color: color-yiq($color);
-    background-color: rgba($color, $form-feedback-tooltip-opacity);
+    color: $tooltip-color;
+    background-color: $tooltip-bg-color;
     @include border-radius($form-feedback-tooltip-border-radius);
-
-    // See https://github.com/twbs/bootstrap/pull/31557
-    // Align tooltip to form elements
-    .form-row > .col > &,
-    .form-row > [class*="col-"] > & {
-      left: $form-grid-gutter-width / 2;
-    }
   }
 
   @include form-validation-state-selector($state) {
@@ -94,7 +68,7 @@
 
       &:focus {
         border-color: $color;
-        box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
+        box-shadow: $focus-box-shadow;
       }
     }
   }
@@ -109,77 +83,62 @@
     }
   }
 
-  .custom-select {
+  .form-select {
     @include form-validation-state-selector($state) {
       border-color: $color;
 
       @if $enable-validation-icons {
-        padding-right: $custom-select-feedback-icon-padding-right;
-        background: $custom-select-background, $custom-select-bg escape-svg($icon) $custom-select-feedback-icon-position / $custom-select-feedback-icon-size no-repeat;
+        &:not([multiple]):not([size]),
+        &:not([multiple])[size="1"] {
+          padding-right: $form-select-feedback-icon-padding-end;
+          background-image: escape-svg($form-select-indicator), escape-svg($icon);
+          background-position: $form-select-bg-position, $form-select-feedback-icon-position;
+          background-size: $form-select-bg-size, $form-select-feedback-icon-size;
+        }
       }
 
       &:focus {
         border-color: $color;
-        box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
+        box-shadow: $focus-box-shadow;
       }
     }
   }
 
   .form-check-input {
     @include form-validation-state-selector($state) {
+      border-color: $color;
+
+      &:checked {
+        background-color: $color;
+      }
+
+      &:focus {
+        box-shadow: $focus-box-shadow;
+      }
+
       ~ .form-check-label {
         color: $color;
       }
-
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
+    }
+  }
+  .form-check-inline .form-check-input {
+    ~ .#{$state}-feedback {
+      margin-left: .5em;
     }
   }
 
-  .custom-control-input {
+  .input-group .form-control,
+  .input-group .form-select {
     @include form-validation-state-selector($state) {
-      ~ .custom-control-label {
-        color: $color;
-
-        &::before {
-          border-color: $color;
-        }
+      @if $state == "valid" {
+        z-index: 1;
+      } @else if $state == "invalid" {
+        z-index: 2;
       }
-
-      &:checked {
-        ~ .custom-control-label::before {
-          border-color: lighten($color, 10%);
-          @include gradient-bg(lighten($color, 10%));
-        }
-      }
-
       &:focus {
-        ~ .custom-control-label::before {
-          box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
-        }
-
-        &:not(:checked) ~ .custom-control-label::before {
-          border-color: $color;
-        }
-      }
-    }
-  }
-
-  // custom file
-  .custom-file-input {
-    @include form-validation-state-selector($state) {
-      ~ .custom-file-label {
-        border-color: $color;
-      }
-
-      &:focus {
-        ~ .custom-file-label {
-          border-color: $color;
-          box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
-        }
+        z-index: 3;
       }
     }
   }
 }
+// scss-docs-end form-validation-mixins