// based on Foundation

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

//** Width of the `border` for generating carets that indicator dropdowns.
$caret-width-base:          4px !default;

//** Background for the dropdown menu.
$dropdown-bg:                    $body-bg !default;
//** Dropdown menu `border-color`.
$dropdown-border:                $base-border-color !default;

//** Divider color for between dropdown items.
$dropdown-divider-bg:            $base-divider-bg !default;

$dropdown-default-color:         $base-font-color-primary !default;

//** Hover color for dropdown links.
$dropdown-link-hover-color:      $base-font-color-deepbg !default;
//** Hover background for dropdown links.
$dropdown-link-hover-bg:         $base-active-bg !default;

//** Active dropdown menu item text color.
$dropdown-link-active-color:     $base-font-color-deepbg !default;
//** Active dropdown menu item background color.
$dropdown-link-active-bg:        $base-active-bg !default;

//** Disabled dropdown menu item background color.
$dropdown-link-disabled-color:   $disabled !default;

// drop menu list
$drop-item-height: rem-calc(32);
$drop-item-max-width: rem-calc(186);
$drop-item-min-width: rem-calc(110);
$drop-item-padding: 0 rem-calc(18);
$drop-item-tny-padding: 0 rem-calc(10);
// 只有icon
$drop-item-icon-only-padding: 0 rem-calc(10);

$drop-list-max-height: $drop-item-height * 8 + $base-list-padding-t-b * 2 + rem-calc(2); // 2px border

$drop-item-icon-margin-left: 0;
$drop-item-icon-margin-right: rem-calc(6);

// font size 
$drop-item-font-size: rem-calc(13);




// Dropdown arrow/caret
.caret {
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 2px;
  vertical-align: middle;
  border-top:   $caret-width-base dashed;
  border-top:   $caret-width-base solid \9; // IE8
  border-right: $caret-width-base solid transparent;
  border-left:  $caret-width-base solid transparent;
}

// The dropdown wrapper (div)
.dropup,
.dropdown {
  position: relative;
}

// Prevent the focus on the dropdown toggle when closing dropdowns
.dropdown-toggle:focus {
  outline: 0;
}

// The dropdown menu (ul)
.dropdown-menu {
  display: none; // none by default, but block on "open" of the menu
  position: absolute;
  top: 100%;
  left: 0;
  z-index: $zindex-dropdown;
  float: left;
  max-height: $drop-list-max-height;
  overflow: auto;
  overflow-x: hidden;
  padding: $base-list-padding-t-b 0;
  list-style: none;
  text-align: left;
  background-color: $dropdown-bg;
  border: 1px solid $dropdown-border;
  border-radius: $base-border-radius;
  box-shadow: $base-box-shadow;

  // Aligns the dropdown menu to right
  &.pull-right {
    right: 0;
    left: auto;
  }

  // Dividers (basically an hr) within the dropdown
  .divider {
    height: 1px;
    margin: $base-list-padding-t-b 0;
    overflow: hidden;
    background-color: $dropdown-divider-bg;
  }

  // Links within the dropdown menu
   li > a {
    position: relative;
    display: block;
    padding: $drop-item-padding;
    clear: both;
    font-weight: normal;
    @include liheight($drop-item-height);
    @include ellipsis();
    max-width: $drop-item-max-width;
    min-width: $drop-item-min-width;
    color: $dropdown-default-color;
    font-size: $drop-item-font-size;
  }

  &.dropdown-tny {
     li > a {
        min-width:initial;
        min-width: auto;
        padding: $drop-item-tny-padding;
    }
  }

  // icon-text-icon
  &.i-text-i {
     li > a {
        max-width: rem-calc(280);
        min-width: rem-calc(216);
        padding-left: rem-calc(12);
        padding-right: rem-calc(24);
    }
  }

  // icon-text
  &.i-text {
     li > a {
        padding-left: rem-calc(12);
        padding-right: rem-calc(24);
    }
  }

  &.dropdown-group {
     li > a {
        padding-right: rem-calc(40);
    } 
  }

  [class^="icon-"],
  [class*=" icon-"] {
    margin-left: $drop-item-icon-margin-left;
    margin-right: $drop-item-icon-margin-right;
    margin-bottom: rem-calc(4);
  }

  &.icon-only {
     li > a {
      padding: $drop-item-icon-only-padding;

      [class^="icon-"],
      [class*=" icon-"] {
        margin: 0;
        margin-bottom: rem-calc(3);
      }
    }

    left: rem-calc(-11);
  }

  .direct {
    width: $small-icon-size;
    height: $small-icon-size;
    right: rem-calc(10);
    top: rem-calc(10);
  }
}

// Active state
.dropdown-menu .active > a {
  & {
    text-decoration: none;
    outline: 0;
    color: $dropdown-link-active-bg;
  }

    .text-primary,
    .text-secondary,
    strong {
        color: $dropdown-link-active-bg;
    }
}

// Hover/Focus state
.dropdown-menu li > a {
  &:hover,
  &:focus {
    text-decoration: none;
    color: $dropdown-link-hover-color;
    background-color: $dropdown-link-hover-bg;

  }

  &:hover,
  &:focus {
    .text-primary,
    .text-secondary,
    strong {
        text-decoration: none;
        color: $dropdown-link-hover-color;
        background-color: $dropdown-link-hover-bg;
    }
  }
}

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

.dropdown-menu .disabled > a {
  &,
  &:hover,
  &:focus {
    color: $dropdown-link-disabled-color;
  }

  // Nuke hover/focus effects
  &:hover,
  &:focus {
    text-decoration: none;
    background-color: transparent;
    background-image: none; // Remove CSS gradient
    cursor: $cursor-disabled-value;
  }
}

// Open state for the dropdown
.open {
  // Show the menu
  .dropdown-menu {
    display: block;
  }

  // Remove the outline when :focus is triggered
  > a {
    outline: 0;
  }
}

// Menu positioning
//
// Add extra class to `.dropdown-menu` to flip the alignment of the dropdown
// menu with the parent.
.dropdown-menu-right {
  left: auto; // Reset the default from `.dropdown-menu`
  right: 0;
}
// With v3, we enabled auto-flipping if you have a dropdown within a right
// aligned nav component. To enable the undoing of that, we provide an override
// to restore the default dropdown menu alignment.
//
// This is only for left-aligning a dropdown menu within a `.navbar-right` or
// `.pull-right` nav component.
.dropdown-menu-left {
  left: 0;
  right: auto;
}

// Dropdown section headers
.dropdown-header {
  display: block;
  padding: 3px 20px;
  line-height: $li-line-height;
  white-space: nowrap; // as with > li > a
}

// Backdrop to catch body clicks on mobile, etc.
.dropdown-backdrop {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  z-index: ($zindex-dropdown - 10);
}

// 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.

.dropup {
  // Reverse the caret
  .caret {
    border-top: 0;
    border-bottom: $caret-width-base dashed;
    content: "";
  }

  // Different positioning for bottom up menu
  .dropdown-menu {
    top: auto;
    bottom: 100%;
    margin-bottom: 8px;
  }
}