index.styl

//
// Input groups
// --------------------------------------------------

// Base styles
// -------------------------
.input-group
  position relative // For dropdowns
  display table
  border-collapse separate // prevent input groups from inheriting border styles from table cells when placed within a table

  // Undo padding and float of grid classes
  &[class*="col-"]
    float none
    padding-left 0
    padding-right 0

  .form-control
    // Ensure that the input is always above the *appended* addon button for
    // proper border colors.
    position relative
    z-index 2

    // IE9 fubars the placeholder attribute in text inputs and the arrows on
    // select elements in input groups. To fix it, we float the input. Details:
    // https://github.com/twbs/bootstrap/issues/11561#issuecomment-28936855
    float left

    width 100%
    margin-bottom 0
    
    &:focus
      z-index 3

// Sizing options
//
// Remix the default form control sizing classes into new ones for easier
// manipulation.

.input-group-lg > .form-control,
.input-group-lg > .input-group-addon,
.input-group-lg > .input-group-btn > .btn
  @extend .input-lg

.input-group-sm > .form-control,
.input-group-sm > .input-group-addon,
.input-group-sm > .input-group-btn > .btn
  @extend .input-sm


// Display as table-cell
// -------------------------
.input-group-addon,
.input-group-btn,
.input-group .form-control
  display table-cell

  &:not(:first-child):not(:last-child)
    border-radius 0
// Addon and addon wrapper for buttons
.input-group-addon,
.input-group-btn
  width 1%
  white-space nowrap
  vertical-align middle // Match the inputs

// Text input groups
// -------------------------
.input-group-addon
  padding $padding-base-vertical $padding-base-horizontal
  font-size $font-size-base
  font-weight normal
  line-height 1
  color $input-color
  text-align center
  background-color $input-group-addon-bg
  border 1px solid $input-group-addon-border-color
  border-radius $input-border-radius

  // Sizing
  &.input-sm
    padding $padding-small-vertical $padding-small-horizontal
    font-size $font-size-small
    border-radius $input-border-radius-small
  &.input-lg
    padding $padding-large-vertical $padding-large-horizontal
    font-size $font-size-large
    border-radius $input-border-radius-large

  // Nuke default margins from checkboxes and radios to vertically center within.
  input[type="radio"],
  input[type="checkbox"]
    margin-top 0

// Reset rounded corners
.input-group .form-control:first-child,
.input-group-addon:first-child,
.input-group-btn:first-child > .btn,
.input-group-btn:first-child > .btn-group > .btn,
.input-group-btn:first-child > .dropdown-toggle,
.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
.input-group-btn:last-child > .btn-group:not(:last-child) > .btn
  border-right-radius(0)

.input-group-addon:first-child
  border-right 0

.input-group .form-control:last-child,
.input-group-addon:last-child,
.input-group-btn:last-child > .btn,
.input-group-btn:last-child > .btn-group > .btn,
.input-group-btn:last-child > .dropdown-toggle,
.input-group-btn:first-child > .btn:not(:first-child),
.input-group-btn:first-child > .btn-group:not(:first-child) > .btn
  border-left-radius(0)

.input-group-addon:last-child
  border-left 0

// Button input groups
// -------------------------
.input-group-btn
  position relative
  // Jankily prevent input button groups from wrapping with `white-space` and
  // `font-size` in combination with `inline-block` on buttons.
  font-size 0
  white-space nowrap

  // Negative margin for spacing, position for bringing hovered/focused/actived
  // element above the siblings.
  > .btn
    position relative
    + .btn
      margin-left -1px
    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active
      z-index 2

  // Negative margin to only have a 1px border between the two
  &:first-child
    > .btn,
    > .btn-group
      z-index 2
      margin-right -1px
  &:last-child
    > .btn,
    > .btn-group
      margin-left -1px