@import "../../style/mixins/index";

// mixins for grid system
// ------------------------
.make-row(@gutter: @grid-gutter-width) {
  position: relative;
  margin-left: (@gutter / -2);
  margin-right: (@gutter / -2);
  height: auto;
  .clearfix;
}

.make-grid-columns() {
  .col(@index) {
    @item: ~".@{ui-prefix}-col_@{index}, .@{ui-prefix}-col_xs_@{index}, .@{ui-prefix}-col_sm_@{index}, .@{ui-prefix}-col_md_@{index}, .@{ui-prefix}-col_lg_@{index}";
    .col((@index + 1), @item);
  }
  .col(@index, @list) when (@index =< @grid-columns) {
    @item: ~".@{ui-prefix}-col_@{index}, .@{ui-prefix}-col_xs_@{index}, .@{ui-prefix}-col_sm_@{index}, .@{ui-prefix}-col_md_@{index}, .@{ui-prefix}-col_lg_@{index}";
    .col((@index + 1), ~"@{list}, @{item}");
  }
  .col(@index, @list) when (@index > @grid-columns) {
    @{list} {
      position: relative;
      // Prevent columns from collapsing when empty
      min-height: 1px;
      padding-left: (@grid-gutter-width / 2);
      padding-right: (@grid-gutter-width / 2);
    }
  }
  .col(1);
}

.float-grid-columns(@class) {
  .col(@index) { // initial
    @item: ~".@{ui-prefix}-col@{class}_@{index}";
    .col((@index + 1), @item);
  }
  .col(@index, @list) when (@index =< @grid-columns) { // general
    @item: ~".@{ui-prefix}-col@{class}_@{index}";
    .col((@index + 1), ~"@{list}, @{item}");
  }
  .col(@index, @list) when (@index > @grid-columns) { // terminal
    @{list} {
      float: left;
      flex: 0 0 auto;
    }
  }
  .col(1); // kickstart it
}

// lesshint false
.loop-grid-columns(@index, @class) when (@index > 0) {
  .@{ui-prefix}-col@{class}_@{index} {
    display: block;
    box-sizing: border-box;
    width: percentage((@index / @grid-columns));
  }
  .@{ui-prefix}-col@{class}_push_@{index} {
    left: percentage((@index / @grid-columns));
  }
  .@{ui-prefix}-col@{class}_pull_@{index} {
    right: percentage((@index / @grid-columns));
  }
  .@{ui-prefix}-col@{class}_offset_@{index} {
    margin-left: percentage((@index / @grid-columns));
  }
  .@{ui-prefix}-col@{class}_order_@{index} {
    order: @index;
  }
  .loop-grid-columns((@index - 1), @class);
}

.loop-grid-columns(@index, @class) when (@index = 0) {
  .@{ui-prefix}-col@{class}_@{index} {
    display: none;
  }
  .@{ui-prefix}-col_push-@{index} {
    left: auto;
  }
  .@{ui-prefix}-col_pull-@{index} {
    right: auto;
  }
  .@{ui-prefix}-col@{class}_push-@{index} {
    left: auto;
  }
  .@{ui-prefix}-col@{class}_pull-@{index} {
    right: auto;
  }
  .@{ui-prefix}-col@{class}_offset-@{index} {
    margin-left: 0;
  }
  .@{ui-prefix}-col@{class}_order_@{index} {
    order: 0;
  }
}

.make-grid(@class: ~'') {
  .float-grid-columns(@class);
  .loop-grid-columns(@grid-columns, @class);
}