@import "../../mixins/_border-radius.less";
@import "../../mixins/_clearfix.less";

/**
 * Button Groups - Grouped button layouts (horizontal, vertical, justified)
 *
 * Note: Uses @size-* tokens for spacing and @btn-group-border-radius. Uses CSS custom properties for colors.
 *
 * Intentionally hardcoded values:
 * - Border/outline widths (2px): Standard borders
 * - Outline-offset (-3px, -2px): Focus indicator positioning
 * - Negative margins (-1px, -2px): Border overlap technique
 * - Padding 12px (off-grid): Large button split dropdown specific
 * - Z-index (2): Button stacking order
 */

// Make the div behave like a button
// Removed unused button group variant from selector - verified 0 usages: .btn-group-vertical
.btn-group {
  position: relative;
  display: flex;
  align-items: center;
  > .btn {
    position: relative;
    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active,
    &.active,
    &.selected {
      z-index: 2;
    }
  }
}

.btn-group {
  padding: 0;
  .c8y-toolbar & {
    padding: @size-4 @size-16;
  }
  .btn {
    display: inline-block;
    margin: 0;
    min-width: 0;
    width: auto;
    // override active states inside the btn-group to match delite guidelines
    &.active {
      background-color: var(--c8y-btn-default-background-active);
      color: var(--c8y-btn-default-color-active);
    }
    &.partial-active {
      background-color: var(--c8y-palette-gray-90);
      color: var(--c8y-brand-complementary);
    }
    &:focus {
      outline: 2px solid @component-color-focus;
      outline-offset: -3px;
    }
  }
  &.btn-group-sm:not(.dropdown) {
    .btn,
    .btn-sm {
      border-radius: @btn-group-border-radius;
    }
  }
  // Prevent double borders when buttons are next to each other
  .btn + .btn,
  .btn + .btn-group,
  .btn-group + .btn,
  .btn-group + .btn-group {
    margin-left: -2px;
  }

  // also when we're using the realtime button
  c8y-realtime-control .btn {
    border-left: 0;
  }
}

// Optional: Group multiple button groups together for a toolbar
.btn-toolbar {
  margin-left: calc(-1 * @size-5); // Offset the first child's margin

  .clearfix();
  .btn,
  .btn-group,
  .input-group {
    float: left;
  }
  > .btn,
  > .btn-group,
  > .input-group {
    margin-left: @size-5;
  }
}

.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-right: @size-10;
  padding-left: @size-8;
}

.btn-group.dropdown > .btn + .dropdown-toggle {
  padding-right: @size-8;
  padding-left: @size-8;
}

.btn-group:not(.dropdown) > .btn-lg + .dropdown-toggle {
  padding-right: 12px;
  padding-left: 12px;
}

// Upside down carets for .dropup
.dropup .btn-lg .caret {
  transform: rotate(180deg);
}

// Removed unused button group variants - verified 0 usages:
// .btn-group-vertical, .btn-group-justified

// 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;
    }
  }
}