overleaf/services/web/frontend/stylesheets/components/forms.less

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//
// Forms
// --------------------------------------------------
// Normalize non-controls
//
// Restyle and baseline non-control form elements.
fieldset {
padding: 0;
margin: 0;
border: 0;
// Chrome and Firefox set a `min-width: -webkit-min-content;` on fieldsets,
// so we reset that to ensure it behaves more like a standard block element.
// See https://github.com/twbs/bootstrap/issues/12359.
min-width: 0;
}
legend {
display: block;
width: 100%;
padding: 0;
margin-bottom: @line-height-computed;
font-size: (@font-size-base * 1.5);
line-height: inherit;
color: @legend-color;
border: 0;
border-bottom: 1px solid @legend-border-color;
}
label {
display: inline-block;
margin-bottom: 5px;
font-weight: bold;
// also update .legend-as-label if changes are made to label
}
.legend-as-label {
// display a legend like a label
&:extend(label);
font-size: @font-size-base;
color: @text-color;
border: 0;
}
// Normalize form controls
//
// While most of our form styles require extra classes, some basic normalization
// is required to ensure optimum display with or without those classes to better
// address browser inconsistencies.
// Override content-box in Normalize (* isn't specific enough)
input[type='search'] {
.box-sizing(border-box);
}
// Position radios and checkboxes better
input[type='radio'],
input[type='checkbox'] {
margin: 4px 0 0;
margin-top: 1px \9; /* IE8-9 */
line-height: normal;
}
// Set the height of file controls to match text inputs
input[type='file'] {
display: block;
}
// Make range inputs behave like textual form controls
input[type='range'] {
display: block;
width: 100%;
}
// Make multiple select elements height not fixed
select[multiple],
select[size] {
height: auto;
}
// Focus for file, radio, and checkbox
input[type='file']:focus,
input[type='radio']:focus,
input[type='checkbox']:focus {
.tab-focus();
}
// Adjust output element
output {
display: block;
padding-top: (@padding-base-vertical + 1);
font-size: @font-size-base;
line-height: @line-height-base;
color: @input-color;
}
// Common form controls
//
// Shared size and type resets for form controls. Apply `.form-control` to any
// of the following form controls:
//
// select
// textarea
// input[type="text"]
// input[type="password"]
// input[type="datetime"]
// input[type="datetime-local"]
// input[type="date"]
// input[type="month"]
// input[type="time"]
// input[type="week"]
// input[type="number"]
// input[type="email"]
// input[type="url"]
// input[type="search"]
// input[type="tel"]
// input[type="color"]
.form-control {
display: block;
width: 100%;
height: @input-height-base;
padding: @padding-base-vertical @input-padding;
font-size: @font-size-base;
line-height: @line-height-base;
color: @input-color;
background-color: @input-bg;
border: @input-border-size solid @input-border;
border-radius: @input-border-radius;
.transition(~'border-color ease-in-out .15s, box-shadow ease-in-out .15s');
// Customize the `:focus` state to imitate native WebKit styles.
.form-control-focus();
// Placeholder
.placeholder();
// Disabled and read-only inputs
//
// HTML5 says that controls under a fieldset > legend:first-child won't be
// disabled if the fieldset is disabled. Due to implementation difficulty, we
// don't honor that edge case; we style them as disabled anyway.
&[disabled],
&[readonly],
fieldset[disabled] & {
cursor: not-allowed;
background-color: @input-bg-disabled;
border-color: @input-bg-disabled;
opacity: 1; // iOS fix for unreadable disabled content
.placeholder(@neutral-40);
}
// Reset height for `textarea`s, and smaller border-radius
textarea& {
height: auto;
border-radius: @border-radius-base;
}
// Smaller border-radius for `select` inputs
select& {
border-radius: @border-radius-base;
}
}
// Search inputs in iOS
//
// This overrides the extra rounded corners on search inputs in iOS so that our
// `.form-control` class can properly style them. Note that this cannot simply
// be added to `.form-control` as it's not specific enough. For details, see
// https://github.com/twbs/bootstrap/issues/11586.
input[type='search'] {
-webkit-appearance: none;
}
// Special styles for iOS date input
//
// In Mobile Safari, date inputs require a pixel line-height that matches the
// given height of the input.
input[type='date'] {
line-height: @input-height-base;
}
// Form groups
//
// Designed to help with the organization and spacing of vertical forms. For
// horizontal forms, use the predefined grid classes.
@form-group-margin-bottom: 15px;
.form-group {
margin-bottom: @form-group-margin-bottom;
}
// Checkboxes and radios
//
// Indent the labels to position radios/checkboxes as hanging controls.
.radio,
.checkbox {
display: block;
min-height: @line-height-computed; // clear the floating input if there is no label text
margin-top: 10px;
margin-bottom: 10px;
padding-left: 20px;
label {
display: inline;
font-weight: normal;
cursor: pointer;
}
}
.fake-disabled-checkbox {
opacity: 0.5;
}
.radio input[type='radio'],
.radio-inline input[type='radio'],
.checkbox input[type='checkbox'],
.checkbox-inline input[type='checkbox'] {
float: left;
margin-left: -20px;
}
.radio + .radio,
.checkbox + .checkbox {
margin-top: -5px; // Move up sibling radios or checkboxes for tighter spacing
}
// Radios and checkboxes on same line
.radio-inline,
.checkbox-inline {
display: inline-block;
padding-left: 20px;
margin-bottom: 0;
vertical-align: middle;
font-weight: normal;
cursor: pointer;
}
.radio-inline + .radio-inline,
.checkbox-inline + .checkbox-inline {
margin-top: 0;
margin-left: 10px; // space out consecutive inline controls
}
// Apply same disabled cursor tweak as for inputs
//
// Note: Neither radios nor checkboxes can be readonly.
input[type='radio'],
input[type='checkbox'],
.radio,
.radio-inline,
.checkbox,
.checkbox-inline {
&[disabled],
fieldset[disabled] & {
cursor: not-allowed;
}
}
// Form control sizing
//
// Build on `.form-control` with modifier classes to decrease or increase the
// height and font-size of form controls.
.input-sm {
.input-size(
@input-height-small; @padding-small-vertical; @padding-small-horizontal;
@font-size-small; @line-height-small; @border-radius-small
);
}
.input-lg {
.input-size(
@input-height-large; @padding-large-vertical; @padding-large-horizontal;
@font-size-large; @line-height-large; @border-radius-large
);
}
// Form control feedback states
//
// Apply contextual and semantic states to individual form controls.
.has-feedback {
// Enable absolute positioning
position: relative;
// Feedback icon (requires .glyphicon classes)
.form-control-feedback {
position: absolute;
top: (@line-height-computed + 5); // Height of the `label` and its margin
right: 0;
display: block;
width: @input-height-base;
height: @input-height-base;
line-height: @input-height-base;
text-align: center;
}
}
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.has-feedback-left {
position: relative;
.form-control {
padding-left: @input-height-base;
}
.form-control-feedback-left {
position: absolute;
top: (@line-height-computed + 5); // Height of the `label` and its margin
left: 0;
display: block;
width: @input-height-base;
height: @input-height-base;
line-height: @input-height-base;
text-align: center;
}
}
// Feedback states
.has-success {
.form-control-validation(@brand-success);
}
.has-warning {
.form-control-validation(@brand-warning);
}
.has-error {
.form-control-validation(@brand-danger);
}
.form-control.ng-dirty.ng-invalid:not(:focus),
.form-control[data-ol-dirty]:invalid:not(:focus) {
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border-color: @state-danger-text;
.box-shadow(
inset 0 1px 1px rgba(0, 0, 0, 0.075)
); // Redeclare so transitions work
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&:focus {
border-color: darken(@state-danger-text, 10%);
@shadow:
inset 0 1px 1px rgba(0, 0, 0, 0.075),
0 0 6px lighten(@state-danger-text, 20%);
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.box-shadow(@shadow);
}
}
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// Static form control text
//
// Apply class to a `p` element to make any string of text align with labels in
// a horizontal form layout.
.form-control-static {
margin-bottom: 0; // Remove default margin from `p`
}
// Help text
//
// Apply to any element you wish to create light text for placement immediately
// below a form control. Use for general help, formatting, or instructional text.
.help-block {
display: block; // account for any element using help-block
margin-top: 5px;
margin-bottom: 10px;
color: lighten(@text-color, 25%); // lighten the text some for contrast
}
// Inline forms
//
// Make forms appear inline(-block) by adding the `.form-inline` class. Inline
// forms begin stacked on extra small (mobile) devices and then go inline when
// viewports reach <768px.
//
// Requires wrapping inputs and labels with `.form-group` for proper display of
// default HTML form controls and our custom form controls (e.g., input groups).
//
// Heads up! This is mixin-ed into `.navbar-form` in navbars.less.
.form-inline {
// Kick in the inline
@media (min-width: @screen-sm-min) {
// Inline-block all the things for "inline"
.form-group {
display: inline-block;
margin-bottom: 0;
vertical-align: middle;
}
// In navbar-form, allow folks to *not* use `.form-group`
.form-control {
display: inline-block;
width: auto; // Prevent labels from stacking above inputs in `.form-group`
vertical-align: middle;
}
// Input groups need that 100% width though
.input-group > .form-control {
width: 100%;
}
.control-label {
margin-bottom: 0;
vertical-align: middle;
}
// Remove default margin on radios/checkboxes that were used for stacking, and
// then undo the floating of radios and checkboxes to match (which also avoids
// a bug in WebKit: https://github.com/twbs/bootstrap/issues/1969).
.radio,
.checkbox {
display: inline-block;
margin-top: 0;
margin-bottom: 0;
padding-left: 0;
vertical-align: middle;
}
.radio input[type='radio'],
.checkbox input[type='checkbox'] {
float: none;
margin-left: 0;
}
// Validation states
//
// Reposition the icon because it's now within a grid column and columns have
// `position: relative;` on them. Also accounts for the grid gutter padding.
.has-feedback .form-control-feedback {
top: 0;
}
}
}
// Horizontal forms
//
// Horizontal forms are built on grid classes and allow you to create forms with
// labels on the left and inputs on the right.
.form-horizontal {
// Consistent vertical alignment of labels, radios, and checkboxes
.control-label,
.radio,
.checkbox,
.radio-inline,
.checkbox-inline {
margin-top: 0;
margin-bottom: 0;
padding-top: (@padding-base-vertical + 1); // Default padding plus a border
}
// Account for padding we're adding to ensure the alignment and of help text
// and other content below items
.radio,
.checkbox {
min-height: (@line-height-computed + (@padding-base-vertical + 1));
}
// Make form groups behave like rows
.form-group {
.make-row();
}
.form-control-static {
padding-top: (@padding-base-vertical + 1);
}
// Only right align form labels here when the columns stop stacking
@media (min-width: @screen-sm-min) {
.control-label {
text-align: right;
}
}
// Validation states
//
// Reposition the icon because it's now within a grid column and columns have
// `position: relative;` on them. Also accounts for the grid gutter padding.
.has-feedback .form-control-feedback {
top: 0;
right: (@grid-gutter-width / 2);
}
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.has-feedback-left .form-control-feedback-left {
top: 0;
left: (@grid-gutter-width / 2);
}
}
.invalid-feedback {
display: flex;
align-items: baseline;
font-size: @font-size-small;
.text-emphasis-variant(@state-danger-text);
}