atom/static/atom-ui/styles/lists.less

@import "variables/variables";
@import "ui-variables";
@import "mixins/mixins";

@import "octicon-mixins";

//
// List options
// --------------------------------------------------

// Unstyled keeps list items block level, just removes default browser padding and list-style
.list-unstyled {
  padding-left: 0;
  list-style: none;
}

// Inline turns list items into inline-block
.list-inline {
  .list-unstyled();
  margin-left: -5px;

  > li {
    display: inline-block;
    padding-left: 5px;
    padding-right: 5px;
  }
}


//
// List groups
// --------------------------------------------------

// Mixins

.list-group-item-variant(@state; @background; @color) {
  .list-group-item-@{state} {
    color: @color;
    background-color: @background;

    a&,
    button& {
      color: @color;

      .list-group-item-heading {
        color: inherit;
      }

      &:hover,
      &:focus {
        color: @color;
        background-color: darken(@background, 5%);
      }
      &.active,
      &.active:hover,
      &.active:focus {
        color: #fff;
        background-color: @color;
        border-color: @color;
      }
    }
  }
}



// Individual list items
//
// Use on `li`s or `div`s within the `.list-group` parent.

.list-group-item {
  position: relative;
  display: block;
  padding: 10px 15px;
  // Place the border on the list items and negative margin up for better styling
  margin-bottom: -1px;
  background-color: @list-group-bg;
  border: 1px solid @list-group-border;

  // Round the first and last items
  &:first-child {
    .border-top-radius(@list-group-border-radius);
  }
  &:last-child {
    margin-bottom: 0;
    .border-bottom-radius(@list-group-border-radius);
  }
}


// Interactive list items
//
// Use anchor or button elements instead of `li`s or `div`s to create interactive items.
// Includes an extra `.active` modifier class for showing selected items.

a.list-group-item,
button.list-group-item {
  color: @list-group-link-color;

  .list-group-item-heading {
    color: @list-group-link-heading-color;
  }

  // Hover state
  &:hover,
  &:focus {
    text-decoration: none;
    color: @list-group-link-hover-color;
    background-color: @list-group-hover-bg;
  }
}

button.list-group-item {
  width: 100%;
  text-align: left;
}

.list-group-item {
  // Disabled state
  &.disabled,
  &.disabled:hover,
  &.disabled:focus {
    background-color: @list-group-disabled-bg;
    color: @list-group-disabled-color;
    cursor: @cursor-disabled;

    // Force color to inherit for custom content
    .list-group-item-heading {
      color: inherit;
    }
    .list-group-item-text {
      color: @list-group-disabled-text-color;
    }
  }

  // Active class on item itself, not parent
  &.active,
  &.active:hover,
  &.active:focus {
    z-index: 2; // Place active items above their siblings for proper border styling
    color: @list-group-active-color;
    background-color: @list-group-active-bg;
    border-color: @list-group-active-border;

    // Force color to inherit for custom content
    .list-group-item-heading,
    .list-group-item-heading > small,
    .list-group-item-heading > .small {
      color: inherit;
    }
    .list-group-item-text {
      color: @list-group-active-text-color;
    }
  }
}


// Contextual variants
//
// Add modifier classes to change text and background color on individual items.
// Organizationally, this must come after the `:hover` states.

.list-group-item-variant(success; @state-success-bg; @state-success-text);
.list-group-item-variant(info; @state-info-bg; @state-info-text);
.list-group-item-variant(warning; @state-warning-bg; @state-warning-text);
.list-group-item-variant(danger; @state-danger-bg; @state-danger-text);


// Custom content options
//
// Extra classes for creating well-formatted content within `.list-group-item`s.

.list-group-item-heading {
  margin-top: 0;
  margin-bottom: 5px;
}
.list-group-item-text {
  margin-bottom: 0;
  line-height: 1.3;
}



// This is a bootstrap override
// ---------------------------------------------

.list-group,
.list-group .list-group-item {
  background-color: transparent;
  border: none;
  padding: 0;
  margin: 0;
  position: static;
}

.list-group,
.list-tree {
  margin: 0;
  padding: 0;
  list-style: none;
  cursor: default;

  li:not(.list-nested-item),
  li.list-nested-item > .list-item {
    line-height: @component-line-height;
    text-wrap: none;
    white-space: nowrap;
  }

  // The background highlight uses ::before rather than the item background so
  // it can span the entire width of the parent container rather than the size
  // of the list item.
  .selected::before {
    content: '';
    background-color: @background-color-selected;
    position: absolute;
    left: 0;
    right: 0;
    height: @component-line-height;
  }

  // Make sure the background highlight is below the content.
  .selected > * {
    position: relative;
  }

  .icon::before {
    margin-right: @component-icon-padding;
    position: relative;
    top: 1px;
  }
  .no-icon {
    padding-left: @component-icon-padding + @component-icon-size;
  }
}



//
// List Tree
// --------------------------------------------------

// Handle indentation of the tree. Assume disclosure arrows.

.list-tree {
  .list-nested-item > .list-tree > li,
  .list-nested-item > .list-group > li {
    padding-left: @component-icon-size + @component-icon-padding;
  }

  &.has-collapsable-children {
    @disclosure-arrow-padding: @disclosure-arrow-size + @component-icon-padding;
    li.list-item {
      margin-left: @disclosure-arrow-padding;
    }

    .list-nested-item.collapsed > .list-group,
    .list-nested-item.collapsed > .list-tree {
      display: none;
    }

    // Nested items always get disclosure arrows
    .list-nested-item > .list-item {
      .octicon(chevron-down, @disclosure-arrow-size);
      &::before{
        position: relative;
        top: -1px;
        margin-right: @component-icon-padding;
      }
    }
    .list-nested-item.collapsed > .list-item {
      .octicon(chevron-right, @disclosure-arrow-size);
      &::before{
        left: 1px;
      }
    }

    .list-nested-item > .list-tree > li,
    .list-nested-item > .list-group > li {
      padding-left: @disclosure-arrow-padding;
    }

    // You want a subtree to be flat -- no collapsable children
    .has-flat-children,
    &.has-flat-children {
      li.list-item {
        margin-left: 0;
      }
    }
  }
}