component LegendIndicator {
  outputs {
    toggle(payload: { sourceEvent?: Event; [key: string]: string | number | boolean | null | object })
    select(payload: { value?: string | number | boolean | null; values?: Array<string | number | boolean | null | object>; sourceEvent?: Event; [key: string]: string | number | boolean | null | object } | string | number | boolean | null)
  }

  props {
    size: string = "default"
    color: string = "primary"
    title: string = "Legend Indicator"
    description: string = ""
    items: unknown[] = []
    variant: string = "default"
    class: string = ""
  }
  state hiddenItems = []
  functions {
    client function toggleItem(item, index, sourceEvent) {
      hiddenItems = hiddenItems.includes(index) ? hiddenItems.filter(function (value) { return value !== index }) : hiddenItems.concat(index)
      output.toggle({ item: item, index: index, hidden: hiddenItems.includes(index), sourceEvent: sourceEvent })
      output.select({ value: item.value || item.label, sourceEvent: sourceEvent })
    }
  }
  view {
    <div class="wrn-legend {class}" data-wrn-owner="LegendIndicator" data-wrn-part="root" data-wrn-component="LegendIndicator" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-variant="{variant}">
      {#if title}<strong>{title}</strong>{/if}
      {#if description}<p>{description}</p>{/if}
      <div class="wrn-legend__items" data-wrn-owner="LegendIndicator" data-wrn-part="items" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-variant="{variant}">{#each items as item, index}<button type="button" aria-pressed="{!hiddenItems.includes(index)}" @click="toggleItem(item, index, event)" data-wrn-owner="LegendIndicator" data-wrn-part="button" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-variant="{variant}"><i style="background:{item.color || 'var(--wrn-color-primary)'}" aria-hidden="true"></i><span>{item.label}</span>{#if item.value}<small>{item.value}</small>{/if}</button>{/each}</div><slot />
    </div>
  }
  style {
    .wrn-legend { display:grid; gap:.65rem; }
    .wrn-legend p { margin:0; color:var(--wrn-color-muted); }
    .wrn-legend__items { display:flex; flex-wrap:wrap; gap:.75rem; }
    .wrn-legend button {
      display: flex;
      align-items: center;
      gap: .45rem;
      padding: 0.25rem 0.5rem;
      border: 1px solid transparent;
      border-radius: 999px;
      background: transparent;
      color: var(--wrn-color-text);
      font: inherit;
      font-size: .8125rem;
      font-weight: 550;
      cursor: pointer;
      transition: background-color 120ms ease, opacity 120ms ease;
    }
    .wrn-legend i {
      width: .625rem;
      height: .625rem;
      border-radius: 3px;
      box-shadow: inset 0 0 0 1px rgb(0 0 0 / 0.1);
    }
    .wrn-legend button[aria-pressed="false"] { opacity:.45; text-decoration:line-through; }

    .wrn-next--legend-indicator {
      display: grid;
      gap: 0.75rem;
      padding: 1rem;
      border: 1px solid var(--wrn-color-border);
      border-radius: var(--wrn-radius);
      color: var(--wrn-color-text);
      background: var(--wrn-color-surface);
      box-shadow: var(--wrn-shadow-1);
    }
    .wrn-next--legend-indicator > p { margin: 0; color: var(--wrn-color-muted); }
    .wrn-next--legend-indicator > .wrn-next__items { display: flex; flex-wrap: wrap; gap: 0.5rem; }
    .wrn-next--legend-indicator > .wrn-next__items > span { padding: 0.35rem 0.6rem; border-radius: var(--wrn-radius-sm); background: var(--wrn-color-surface-2); }

    /* Shared component foundation. */

        .wrn-component {
          --wrn-component-color: var(--wrn-color-primary);
          --wrn-component-scale: 1;
          margin: 0;
          color: var(--wrn-color-text);
          font-family: var(--wrn-font-sans, inherit);
        }

        .wrn-component--color-primary {
          --wrn-component-color: var(--wrn-color-primary);
        }

        .wrn-component--color-secondary {
          --wrn-component-color: var(--wrn-color-secondary);
        }

        .wrn-component--color-success {
          --wrn-component-color: var(--wrn-color-success);
        }

        .wrn-component--color-warning {
          --wrn-component-color: var(--wrn-color-warning);
        }

        .wrn-component--color-danger {
          --wrn-component-color: var(--wrn-color-danger);
        }

        .wrn-component--color-info {
          --wrn-component-color: var(--wrn-color-info);
        }

        .wrn-component--size-xs {
          --wrn-component-scale: 0.78;
        }

        .wrn-component--size-sm {
          --wrn-component-scale: 0.88;
        }

        .wrn-component--size-default,
        .wrn-component--size-md {
          --wrn-component-scale: 1;
        }

        .wrn-component--size-lg {
          --wrn-component-scale: 1.14;
        }

        .wrn-component--size-xl {
          --wrn-component-scale: 1.28;
        }

        .wrn-component:not(.wrn-btn) {
          font-size: calc(1em * var(--wrn-component-scale));
        }

        .wrn-component :is(a, button, input, select, textarea):focus-visible {
          outline-color: var(--wrn-component-color);
        }

        .wrn-component p {
          margin: 0;
          color: var(--wrn-color-text-muted, var(--wrn-color-muted));
          line-height: 1.6;
        }
  }
}