//
// Dropdown menus
// --------------------------------------------------

// Use the .menu class on any <li> element within the topbar or ul.tabs and you'll get some superfancy dropdowns

.dropup,
.dropdown
  position: relative

.dropdown-toggle
  // The caret makes the toggle a bit too tall in IE7
  *margin-bottom: -3px

.dropdown-toggle:active,
.open .dropdown-toggle
  outline: 0

// Dropdown arrow/caret
// --------------------
.caret
  display: inline-block
  width: 0
  height: 0
  vertical-align: top
  border-top: 4px solid $black
  border-right: 4px solid transparent
  border-left: 4px solid transparent
  content: ""

// Place the caret
.dropdown .caret
  margin-top: 8px
  margin-left: 2px

// The dropdown menu (ul)
// ----------------------
.dropdown-menu
  position: absolute
  top: 100%
  left: 0
  z-index: $zindexDropdown
  display: none
  // none by default, but block on "open" of the menu
  float: left
  min-width: 160px
  padding: 5px 0
  margin: 2px 0 0
  // override default ul
  list-style: none
  background-color: $dropdownBackground
  border: 1px solid #ccc
  // Fallback for IE7-8
  border: 1px solid $dropdownBorder
  *border-right-width: 2px
  *border-bottom-width: 2px
  +border-radius(6px)
  +box-shadow(0 5px 10px rgba(0, 0, 0, 0.2))
  -webkit-background-clip: padding-box
  -moz-background-clip: padding
  background-clip: padding-box
  // Aligns the dropdown menu to right
  &.pull-right
    right: 0
    left: auto
  // Dividers (basically an hr) within the dropdown
  .divider
    +nav-divider($dropdownDividerTop, $dropdownDividerBottom)
  // Links within the dropdown menu
  li > a
    display: block
    padding: 3px 20px
    clear: both
    font-weight: normal
    line-height: $baseLineHeight
    color: $dropdownLinkColor
    white-space: nowrap

// Hover state
// -----------

.dropdown-menu li > a:hover,
.dropdown-menu li > a:focus,
.dropdown-submenu:hover > a
  text-decoration: none
  color: $dropdownLinkColorHover
  +gradient-vertical($dropdownLinkBackgroundHover, darken($dropdownLinkBackgroundHover, 5%))

// Active state
// ------------

.dropdown-menu .active > a,
.dropdown-menu .active > a:hover
  color: $dropdownLinkColorActive
  text-decoration: none
  outline: 0
  +gradient-vertical($dropdownLinkBackgroundActive, darken($dropdownLinkBackgroundActive, 5%))

// Disabled state
// --------------
// Gray out text and ensure the hover state remains gray

.dropdown-menu .disabled > a,
.dropdown-menu .disabled > a:hover
  color: $grayLight

// Nuke hover effects
.dropdown-menu .disabled > a:hover
  text-decoration: none
  background-color: transparent
  background-image: none
  // Remove CSS gradient
  cursor: default

// Open state for the dropdown
// ---------------------------
.open
  // IE7's z-index only goes to the nearest positioned ancestor, which would
  // make the menu appear below buttons that appeared later on the page
  *z-index: $zindexDropdown
  & > .dropdown-menu
    display: block

// Right aligned dropdowns
// ---------------------------
.pull-right > .dropdown-menu
  right: 0
  left: auto

// Allow for dropdowns to go bottom up (aka, dropup-menu)
// ------------------------------------------------------
// Just add .dropup after the standard .dropdown class and you're set, bro.
// TODO: abstract this so that the navbar fixed styles are not placed here?

.dropup,
.navbar-fixed-bottom .dropdown
  // Reverse the caret
  .caret
    border-top: 0
    border-bottom: 4px solid $black
    content: ""
  // Different positioning for bottom up menu
  .dropdown-menu
    top: auto
    bottom: 100%
    margin-bottom: 1px

// Sub menus
// ---------------------------
.dropdown-submenu
  position: relative

// Default dropdowns
.dropdown-submenu > .dropdown-menu
  top: 0
  left: 100%
  margin-top: -6px
  margin-left: -1px
  -webkit-border-radius: 0 6px 6px 6px
  -moz-border-radius: 0 6px 6px 6px
  border-radius: 0 6px 6px 6px

.dropdown-submenu:hover > .dropdown-menu
  display: block

// Dropups
.dropup .dropdown-submenu > .dropdown-menu
  top: auto
  bottom: 0
  margin-top: 0
  margin-bottom: -2px
  -webkit-border-radius: 5px 5px 5px 0
  -moz-border-radius: 5px 5px 5px 0
  border-radius: 5px 5px 5px 0

// Caret to indicate there is a submenu
.dropdown-submenu > a:after
  display: block
  content: " "
  float: right
  width: 0
  height: 0
  border-color: transparent
  border-style: solid
  border-width: 5px 0 5px 5px
  border-left-color: darken($dropdownBackground, 20%)
  margin-top: 5px
  margin-right: -10px

.dropdown-submenu:hover > a:after
  border-left-color: $dropdownLinkColorHover

// Left aligned submenus
.dropdown-submenu.pull-left
  // Undo the float
  // Yes, this is awkward since .pull-left adds a float, but it sticks to our conventions elsewhere.
  float: none
  // Positioning the submenu
  > .dropdown-menu
    left: -100%
    margin-left: 10px
    -webkit-border-radius: 6px 0 6px 6px
    -moz-border-radius: 6px 0 6px 6px
    border-radius: 6px 0 6px 6px

// Tweak nav headers
// -----------------
// Increase padding from 15px to 20px on sides
.dropdown .dropdown-menu .nav-header
  padding-left: 20px
  padding-right: 20px

// Typeahead
// ---------
.typeahead
  margin-top: 2px
  // give it some space to breathe
  +border-radius($baseBorderRadius)