@import 'mixins/common';
// The following produce a combo box widget:
// * WTextField, WEmailField or WPhoneNumberField with WSuggestions
// * WPartialDateField
// * WDateField if the browser does not support input type date
// * WDropdown Type.COMBO.


// padding-left + padding-right + icon width + a bit for the border.
$wc-combo-button-width-allowance: 2 * $wc-combo-button-padding-lr + $wc-icon-normal + $wc-gap-small;

// This redundant rule is not as redundant as you might think.
datalist {
  display: none;
}

// The wrapper for all combo widgets.
[role='combobox'] {
  display: inline-block;
  position: relative;
  white-space: nowrap;


  @if ($wc-clr-error-bg != -1) {
    // The whole combo is invalid but we only want to apply the background
    // color to the textbox.
    &[aria-invalid='true'] > input {
      background-color: $wc-clr-error-bg;
    }
  }

  [role='textbox'] {
    max-width: calc(100% - #{$wc-combo-button-width-allowance});
  }

  [role='listbox'] {
    min-width: 100%;

    dialog & {
      min-width: initial;
    }
  }

  &[aria-expanded='false'] [role='listbox'] {
    display: none;
  }

  // We need the child selector here because of The W[Partial]DateField
  // calendar.
  > button {
    padding-left: $wc-combo-button-padding-lr;
    padding-right: $wc-combo-button-padding-lr;
    @if ($wc-clr-border-form-control != -1) {
      @include border($pos: left, $width: 0);
      @if ($wc-input-padding != -1) {
        padding-bottom: $wc-input-padding;
        padding-top: $wc-input-padding;
      } @else { // this could cause issues with some browsers.
        padding-bottom: 2px;
        padding-top: 2px;
      }
    } @else { // this could cause issues with some browsers.
      padding-bottom: 2px;
      padding-top: 2px;
    }

    &::before {
      text-align: center;
      width: $wc-icon-normal;
    }
  }
}


[role='listbox'] {
  @include border;
  @include border-box;
  @include tight-box;
  display: block;
  list-style-type: none;
  // allow for up to approx seven visible options. The factor 1.25 is a rough
  // line-height Chrome & Safari on OS - X use 1.125 whereas FF appears to use
  // 1.0625.
  max-height: (7 * 1.125 * (1 + (2 * $wc-gap-small)));
  max-width: 100%;
  overflow: auto;
  position: absolute;
  z-index: $wc-z-index-common;

  dialog & {
    position: fixed;
    z-index: $wc-z-index-common-in-dialog;
  }
}

[role='option'] {
  @include border-box;
  display: block;
  margin: 0;
  min-height: 1em;
  padding: $wc-gap-small;
  width: 100%;
}

@import 'wc.combo.color';
