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- //
- // Dropdown menus
- // --------------------------------------------------
- // 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 {
- position: absolute;
- top: 100%;
- left: 0;
- z-index: @zindex-dropdown;
- 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
- font-size: @font-size-base;
- text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
- list-style: none;
- background-color: @dropdown-bg;
- background-clip: padding-box;
- border: 1px solid @dropdown-fallback-border; // IE8 fallback
- border: 1px solid @dropdown-border;
- border-radius: @border-radius-base;
- .box-shadow(0 6px 12px rgba(0, 0, 0, .175));
- // Aligns the dropdown menu to right
- //
- // Deprecated as of 3.1.0 in favor of `.dropdown-menu-[dir]`
- &.pull-right {
- right: 0;
- left: auto;
- }
- // Dividers (basically an hr) within the dropdown
- .divider {
- .nav-divider(@dropdown-divider-bg);
- }
- // Links within the dropdown menu
- > li > a {
- display: block;
- padding: 3px 20px;
- clear: both;
- font-weight: 400;
- line-height: @line-height-base;
- color: @dropdown-link-color;
- white-space: nowrap; // prevent links from randomly breaking onto new lines
- &:hover,
- &:focus {
- color: @dropdown-link-hover-color;
- text-decoration: none;
- background-color: @dropdown-link-hover-bg;
- }
- }
- }
- // Active state
- .dropdown-menu > .active > a {
- &,
- &:hover,
- &:focus {
- color: @dropdown-link-active-color;
- text-decoration: none;
- background-color: @dropdown-link-active-bg;
- outline: 0;
- }
- }
- // 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;
- cursor: @cursor-disabled;
- background-color: transparent;
- background-image: none; // Remove CSS gradient
- .reset-filter();
- }
- }
- // 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 {
- right: 0;
- left: auto; // Reset the default from `.dropdown-menu`
- }
- // 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 {
- right: auto;
- left: 0;
- }
- // Dropdown section headers
- .dropdown-header {
- display: block;
- padding: 3px 20px;
- font-size: @font-size-small;
- line-height: @line-height-base;
- color: @dropdown-header-color;
- white-space: nowrap; // as with > li > a
- }
- // Backdrop to catch body clicks on mobile, etc.
- .dropdown-backdrop {
- position: fixed;
- top: 0;
- right: 0;
- bottom: 0;
- left: 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.
- // TODO: abstract this so that the navbar fixed styles are not placed here?
- .dropup,
- .navbar-fixed-bottom .dropdown {
- // Reverse the caret
- .caret {
- content: "";
- border-top: 0;
- border-bottom: @caret-width-base dashed;
- border-bottom: @caret-width-base solid ~"\9"; // IE8
- }
- // Different positioning for bottom up menu
- .dropdown-menu {
- top: auto;
- bottom: 100%;
- margin-bottom: 2px;
- }
- }
- // Component alignment
- //
- // Reiterate per navbar.less and the modified component alignment there.
- @media (min-width: @grid-float-breakpoint) {
- .navbar-right {
- .dropdown-menu {
- .dropdown-menu-right();
- }
- // Necessary for overrides of the default right aligned menu.
- // Will remove come v4 in all likelihood.
- .dropdown-menu-left {
- .dropdown-menu-left();
- }
- }
- }
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