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Bootstrap/scss/forms/_floating-labels.scss
Mark Otto 3e2f9ab237
v5: Floating labels (#30449)
* v5: Promote floating labels example to component

- Adds new .form-floating
- Stubs out basics of a docs page
- Removes existing Example

* Update floating labels to support .form-select, make inputs and selects more consistent

- To do this, I made the .form-control and .form-select consistent in min-height vs height
- Removed some unused variables now
- Updated -color to be the -color because I don't know why this was any different before
- Update page to include some examples for layout, validation, and value
- Rewrite styles to not modify padding, but instead transform and opacity

* Streamline and bulletproof some things

- Apply some optimizations from code review
- Removed unecessary properties from the label
- Add some comments for what properties are required
- Move from fixed height for labels to height 100% so we can support textareas
- Improve docs a little bit, add ToC

* Move some values to variables, switch from scaling font-size to scale, update transforms

* Bring over changes from #30966 and add to them to tighten things up

* Delete the now unused example images

* Fix typo

* Allowlist the calc function

* Add transform-origin, update transform values

* Test out autofill fix

* Fix linter issue

* Mention it in the migration guide

* Bump bundlesize

* Add one more variable per review

* Shave .25rem off the height

Co-authored-by: XhmikosR <xhmikosr@gmail.com>
2020-10-27 20:45:48 -07:00

86 lines
2.2 KiB
SCSS

// stylelint-disable selector-no-vendor-prefix
.form-floating {
position: relative;
> .form-control,
> .form-select {
height: $form-floating-height;
padding: $form-floating-padding-y $form-floating-padding-x;
}
> label {
position: absolute;
top: 0;
left: 0;
height: 100%; // allow textareas
padding: $form-floating-padding-y $form-floating-padding-x;
pointer-events: none;
border: $input-border-width solid transparent; // Required for aligning label's text with the input as it affects inner box model
transform-origin: 0 0;
@include transition($form-floating-transition);
}
// stylelint-disable no-duplicate-selectors
> .form-control {
&::placeholder {
color: transparent;
}
&:focus,
&:not(:placeholder-shown) {
padding-top: $form-floating-input-padding-t;
padding-bottom: $form-floating-input-padding-b;
}
// Duplicated because `:-webkit-autofill` invalidates other selectors when grouped
&:-webkit-autofill {
padding-top: $form-floating-input-padding-t;
padding-bottom: $form-floating-input-padding-b;
}
}
> .form-select {
padding-top: $form-floating-input-padding-t;
padding-bottom: $form-floating-input-padding-b;
}
> .form-control:focus,
> .form-control:not(:placeholder-shown),
> .form-select {
~ label {
opacity: $form-floating-label-opacity;
transform: $form-floating-label-transform;
}
}
// Duplicated because `:-webkit-autofill` invalidates other selectors when grouped
> .form-control:-webkit-autofill {
~ label {
opacity: $form-floating-label-opacity;
transform: $form-floating-label-transform;
}
}
// stylelint-enable no-duplicate-selectors
}
//
// Fallback for classic Edge
//
@supports (-ms-ime-align: auto) {
.form-floating {
display: flex;
flex-direction: column-reverse;
}
.form-floating > label {
position: static;
padding: 0;
margin-bottom: calc(#{$form-floating-padding-y} / 2); // stylelint-disable-line function-disallowed-list
border: 0;
@include transition(none);
}
.form-floating > .form-control::-ms-input-placeholder {
color: $input-placeholder-color;
}
}