index.styl

//
// Button groups
// --------------------------------------------------

// Make the div behave like a button
.btn-group,
.btn-group-vertical
  position relative
  display inline-block
  vertical-align middle // match .btn alignment given font-size hack above

  > .btn
    position relative
    float left

    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active,
    &.active
      z-index 2

// Prevent double borders when buttons are next to each other
.btn-group
  .btn + .btn,
  .btn + .btn-group,
  .btn-group + .btn,
  .btn-group + .btn-group
    margin-left -1px

// Optional Group multiple button groups together for a toolbar
.btn-toolbar
  margin-left -5px // Offset the first child's margin
  clearfix()

  .btn,
  .btn-group,
  .input-group
    float left

  > .btn,
  > .btn-group,
  > .input-group
    margin-left 5px

.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle)
  border-radius 0

// Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
.btn-group > .btn:first-child
  margin-left 0

  &:not(:last-child):not(.dropdown-toggle)
    border-right-radius(0)

// Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
.btn-group > .btn:last-child:not(:first-child),
.btn-group > .dropdown-toggle:not(:first-child)
  border-left-radius(0)

// Custom edits for including btn-groups within btn-groups (useful for including dropdown buttons within a btn-group)
.btn-group > .btn-group
  float left

.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn
  border-radius 0

.btn-group > .btn-group:first-child:not(:last-child)
  > .btn:last-child,
  > .dropdown-toggle
    border-right-radius(0)

.btn-group > .btn-group:last-child:not(:first-child) > .btn:first-child
  border-left-radius(0)

// On active and open, don't show outline
.btn-group .dropdown-toggle:active,
.btn-group.open .dropdown-toggle
  outline 0


// Sizing
//
// Remix the default button sizing classes into new ones for easier manipulation.

.btn-group-xs > .btn
  @extend .btn-xs

.btn-group-sm > .btn
  @extend .btn-sm

.btn-group-lg > .btn
  @extend .btn-lg


// Split button dropdowns
// ----------------------

// Give the line between buttons some depth
.btn-group > .btn + .dropdown-toggle
  padding-left 8px
  padding-right 8px

.btn-group > .btn-lg + .dropdown-toggle
  padding-left 12px
  padding-right 12px

// The clickable button for toggling the menu
// Remove the gradient and set the same inset shadow as the :active state
.btn-group.open .dropdown-toggle
  box-shadow inset 0 3px 5px rgba(0, 0, 0, .125)

  // Show no shadow for `.btn-link` since it has no other button styles.
  &.btn-link
    box-shadow none


// Reposition the caret
.btn .caret
  margin-left 0

// Carets in other button sizes
.btn-lg .caret
  border-width $caret-width-large $caret-width-large 0
  border-bottom-width 0

// Upside down carets for .dropup
.dropup .btn-lg .caret
  border-width 0 $caret-width-large $caret-width-large


// Vertical button groups
// ----------------------

.btn-group-vertical
  > .btn,
  > .btn-group,
  > .btn-group > .btn
    display block
    float none
    width 100%
    max-width 100%

  // Clear floats so dropdown menus can be properly placed
  > .btn-group
    clearfix()
    > .btn
      float none

  > .btn + .btn,
  > .btn + .btn-group,
  > .btn-group + .btn,
  > .btn-group + .btn-group
    margin-top -1px
    margin-left 0

.btn-group-vertical > .btn
  &:not(:first-child):not(:last-child)
    border-radius 0

  &:first-child:not(:last-child)
    border-top-radius($btn-border-radius-base)
    border-bottom-radius(0)

  &:last-child:not(:first-child)
    border-top-radius(0)
    border-bottom-radius($btn-border-radius-base)

.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn
  border-radius 0

.btn-group-vertical > .btn-group:first-child:not(:last-child)
  > .btn:last-child,
  > .dropdown-toggle
    border-bottom-radius(0)

.btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child
  border-top-radius(0)



// Justified button groups
// ----------------------

.btn-group-justified
  display table
  width 100%
  table-layout fixed
  border-collapse separate

  > .btn,
  > .btn-group
    float none
    display table-cell
    width 1%

  > .btn-group .btn
    width 100%

  > .btn-group .dropdown-menu
    left auto


// Checkbox and radio options
//
// In order to support the browser's form validation feedback, powered by the
// `required` attribute, we have to "hide" the inputs via `clip`. We cannot use
// `display: none;` or `visibility: hidden;` as that also hides the popover.
// Simply visually hiding the inputs via `opacity` would leave them clickable in
// certain cases which is prevented by using `clip` and `pointer-events`.
// This way, we ensure a DOM element is visible to position the popover from.
//
// See https://github.com/twbs/bootstrap/pull/12794 and
// https://github.com/twbs/bootstrap/pull/14559 for more information.

[data-toggle="buttons"]
  > .btn
  > .btn-group > .btn
    input[type="radio"],
    input[type="checkbox"]
      position absolute
      clip rect(0, 0, 0, 0)
      pointer-events none