WRNexusJS/packages/ui/components/PreferenceSwitcher.wrn

component PreferenceSwitcher {
  outputs {
    theme(payload: { sourceEvent?: Event; value: string | number | boolean | null | object; [key: string]: string | number | boolean | null | object } | string | number | boolean | null | object[])
    color(payload: { sourceEvent?: Event; value: string | number | boolean | null | object; [key: string]: string | number | boolean | null | object } | string | number | boolean | null | object[])
    language(payload: { sourceEvent?: Event; value: string | number | boolean | null | object; [key: string]: string | number | boolean | null | object } | string | number | boolean | null | object[])
  }

  props {
size: string = "default"
    color: string = "primary"
    themeLabel: string = "Theme"
    colorLabel: string = "Accent color"
    languageLabel: string = "Language"
    languages = [
      {"label": "English", "shortLabel": "EN", "value": "en"},
      {"label": "हिन्दी", "shortLabel": "हि", "value": "hi"},
      {"label": "मराठी", "shortLabel": "म", "value": "mr"}
    ]
    colors = [
      {"label": "Blue", "value": "blue", "hex": "#2563eb"},
      {"label": "Cyan", "value": "cyan", "hex": "#0891b2"},
      {"label": "Emerald", "value": "emerald", "hex": "#059669"},
      {"label": "Violet", "value": "violet", "hex": "#7c3aed"},
      {"label": "Rose", "value": "rose", "hex": "#e11d48"},
      {"label": "Amber", "value": "amber", "hex": "#d97706"}
    ]
    compact: boolean = true
    iconOnly: boolean = true
    themeIcon: string = "icon-[lucide--sun-moon]"
    colorIcon: string = "icon-[lucide--palette]"
    languageIcon: string = "icon-[lucide--languages]"
    panelPlacement: string = "bottom-end"
    mobilePanel: string = "dropdown"
    showCurrentLanguage: boolean = true
    class: string = ""
  }

  functions {
    client function choose(type, value) {
      if (type === "color") window.wrnAccent?.set(value)
      if (type === "theme") window.wrnTheme?.set(value)
      output[type]({ value: value })
    }
  }

  view {
    <div class="wrn-preferences wrn-component--color-{color} wrn-component--size-{size} {compact ? 'wrn-preferences--compact' : ''} {class}" data-wrn-preferences data-icon-only="{iconOnly ? 'true' : 'false'}" data-panel-placement="{panelPlacement}" data-mobile-panel="{mobilePanel}" aria-label="Display and language preferences" data-wrn-owner="PreferenceSwitcher" data-wrn-part="root" data-wrn-component="PreferenceSwitcher" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
      <div data-wrn-menu data-open="false" class="wrn-preferences__menu" name="wrn-preference-menu" data-wrn-owner="PreferenceSwitcher" data-wrn-part="menu" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
        <button type="button" data-wrn-menu-toggle aria-expanded="false" aria-label="{themeLabel}" title="{themeLabel}" data-wrn-owner="PreferenceSwitcher" data-wrn-part="trigger" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
          <span class="{themeIcon}" aria-hidden="true"></span>
          {#if !iconOnly && !compact}<span>{themeLabel}</span>{/if}
        </button>
        <div data-wrn-anchored="true" class="wrn-preferences__panel" data-wrn-owner="PreferenceSwitcher" data-wrn-part="panel" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
          <strong>{themeLabel}</strong>
          <div class="wrn-preferences__options" data-wrn-owner="PreferenceSwitcher" data-wrn-part="options" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
            <button type="button" data-wrn-theme-set="light" @click="choose('theme', 'light')" data-wrn-owner="PreferenceSwitcher" data-wrn-part="button" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}"><span class="icon-[lucide--sun]" aria-hidden="true"></span>Light</button>
            <button type="button" data-wrn-theme-set="dark" @click="choose('theme', 'dark')" data-wrn-owner="PreferenceSwitcher" data-wrn-part="button" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}"><span class="icon-[lucide--moon]" aria-hidden="true"></span>Dark</button>
          </div>
        </div>
      </div>

      <div data-wrn-menu data-open="false" class="wrn-preferences__menu" name="wrn-preference-menu" data-wrn-owner="PreferenceSwitcher" data-wrn-part="menu" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
        <button type="button" data-wrn-menu-toggle aria-expanded="false" aria-label="{colorLabel}" title="{colorLabel}" data-wrn-owner="PreferenceSwitcher" data-wrn-part="trigger" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
          <span class="{colorIcon}" aria-hidden="true"></span>
          {#if !iconOnly && !compact}<span>{colorLabel}</span>{/if}
        </button>
        <div data-wrn-anchored="true" class="wrn-preferences__panel wrn-preferences__panel--colors" data-wrn-owner="PreferenceSwitcher" data-wrn-part="panel" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
          <strong>{colorLabel}</strong>
          <div class="wrn-preferences__swatches" data-wrn-owner="PreferenceSwitcher" data-wrn-part="swatches" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
            {#each colors as item}
              <button type="button" data-wrn-accent-set="{item.value}" aria-label="{item.label}" title="{item.label}" style="--wrn-preference-swatch: {item.hex}" @click="choose('color', item.value)" data-wrn-owner="PreferenceSwitcher" data-wrn-part="button" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}"></button>
            {/each}
          </div>
        </div>
      </div>

      <div data-wrn-menu data-open="false" class="wrn-preferences__menu wrn-preferences__menu--language" name="wrn-preference-menu" data-wrn-owner="PreferenceSwitcher" data-wrn-part="menu" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
        <button type="button" data-wrn-menu-toggle aria-expanded="false" aria-label="{languageLabel}" title="{languageLabel}" data-wrn-owner="PreferenceSwitcher" data-wrn-part="trigger" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
          <span class="{languageIcon}" aria-hidden="true"></span>
          {#if showCurrentLanguage}<span class="wrn-preferences__current-language" aria-hidden="true" data-wrn-owner="PreferenceSwitcher" data-wrn-part="currentLanguage" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">EN</span>{/if}
          {#if !iconOnly && !compact}<span>{languageLabel}</span>{/if}
        </button>
        <div data-wrn-anchored="true" class="wrn-preferences__panel wrn-preferences__panel--language" data-wrn-owner="PreferenceSwitcher" data-wrn-part="panel" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
          <strong>{languageLabel}</strong>
          {#each languages as item}
            <button type="button" data-wrn-lang-set="{item.value}" lang="{item.value}" @click="choose('language', item.value)" data-wrn-owner="PreferenceSwitcher" data-wrn-part="button" data-wrn-axis-size="{size}" data-wrn-axis-color="{color}" data-wrn-axis-compact="{compact}">
              <span>{item.shortLabel}</span>{item.label}
            </button>
          {/each}
        </div>
      </div>
    </div>
  }

  style {
    /* Portal display, accent, and language preferences */
    .wrn-preferences {
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }

    .wrn-preferences__menu {
      position: relative;
    }

    .wrn-preferences__menu > [data-wrn-menu-toggle] {
      display: inline-flex;
      min-width: 2.25rem;
      min-height: 2.25rem;
      padding: 0.45rem 0.6rem;
      align-items: center;
      justify-content: center;
      gap: 0.4rem;
      border: 1px solid transparent;
      border-radius: var(--wrn-radius-sm, 6px);
      color: var(--wrn-color-muted);
      cursor: pointer;
      list-style: none;
      background: var(--wrn-color-surface-2);
      font: inherit;
    }

    .wrn-preferences__menu > [data-wrn-menu-toggle]:hover,
    .wrn-preferences__menu[data-open="true"] > [data-wrn-menu-toggle] {
      color: var(--wrn-color-text);
      border-color: var(--wrn-color-border);
      background: var(--wrn-color-surface);
    }

    .wrn-preferences__menu > [data-wrn-menu-toggle] > span:first-child {
      width: 1rem;
      height: 1rem;
    }

    .wrn-preferences__current-language {
      min-width: 1.25rem;
      color: var(--wrn-color-text);
      font-size: 0.625rem;
      font-weight: 650;
      letter-spacing: 0.02em;
    }

    .wrn-preferences__menu:not([data-open="true"]) > .wrn-preferences__panel { display: none; }

    .wrn-preferences__panel {
      position: absolute;
      z-index: 80;
      top: calc(100% + 0.5rem);
      right: 0;
      display: grid;
      width: max-content;
      min-width: 11rem;
      max-width: min(22rem, calc(100vw - 2rem));
      max-height: min(28rem, calc(100dvh - 2rem));
      overflow-y: auto;
      padding: 0.4rem;
      gap: 0.35rem;
      border: 1px solid var(--wrn-color-border);
      border-radius: var(--wrn-radius-md, 0.8rem);
      color: var(--wrn-color-text);
      background: var(--wrn-color-surface);
      box-shadow: var(--wrn-shadow-lg, 0 18px 48px rgb(0 0 0 / 0.18));
      animation: wrn-component-enter 160ms ease both;
    }

    .wrn-preferences[data-panel-placement="bottom-start"] .wrn-preferences__panel { right: auto; left: 0; }
    .wrn-preferences[data-panel-placement="bottom-center"] .wrn-preferences__panel { right: auto; left: 50%; transform: translateX(-50%); }

    .wrn-preferences__panel > strong {
      padding: 0.35rem 0.5rem 0.15rem;
      color: var(--wrn-color-text-muted, var(--wrn-color-muted));
      font-size: 0.6875rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    /* Theme choice reads as one segmented control, not two loose tiles. */
    .wrn-preferences__options {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.2rem;
      padding: 0.2rem;
      border-radius: var(--wrn-radius-sm, 0.55rem);
      background: var(--wrn-color-surface-2);
    }

    .wrn-preferences__panel button {
      display: inline-flex;
      min-height: 2.25rem;
      padding: 0.4rem 0.6rem;
      align-items: center;
      gap: 0.55rem;
      border: 1px solid transparent;
      border-radius: calc(var(--wrn-radius-sm, 0.55rem) - 2px);
      font-family: inherit;
      text-align: start;
      cursor: pointer;
      color: var(--wrn-color-text-muted, var(--wrn-color-muted));
      background: transparent;
      font-size: 0.8125rem;
      font-weight: 500;
      line-height: 1.2;
      transition:
        color 0.15s,
        background-color 0.15s,
        box-shadow 0.15s;
    }

    .wrn-preferences__panel button > span[class*="icon-["] {
      flex: none;
      width: 1rem;
      height: 1rem;
    }

    .wrn-preferences__panel button:focus-visible {
      outline: 2px solid var(--wrn-color-focus, var(--wrn-color-primary));
      outline-offset: 2px;
    }

    .wrn-preferences__panel button:hover {
      color: var(--wrn-color-text);
      background: var(--wrn-color-surface-2);
    }

    .wrn-preferences__options button {
      justify-content: center;
    }

    .wrn-preferences__options button:hover {
      background: color-mix(in srgb, var(--wrn-color-surface) 60%, transparent);
    }

    .wrn-preferences__options button[aria-pressed="true"] {
      color: var(--wrn-color-text);
      background: var(--wrn-color-surface);
      box-shadow:
        0 0 0 1px var(--wrn-color-border),
        0 1px 2px rgb(0 0 0 / 0.06);
    }

    .wrn-preferences__swatches {
      display: grid;
      grid-template-columns: repeat(3, 2rem);
      gap: 0.5rem;
      padding: 0.25rem;
    }

    .wrn-preferences__swatches button {
      width: 2rem;
      min-height: 2rem;
      padding: 0;
      border: 3px solid var(--wrn-color-surface);
      border-radius: 999px;
      background: var(--wrn-preference-swatch);
      box-shadow: 0 0 0 1px var(--wrn-color-border);
    }

    .wrn-preferences__swatches button:hover {
      background: var(--wrn-preference-swatch);
    }

    .wrn-preferences__swatches button[aria-pressed="true"] {
      box-shadow:
        0 0 0 2px var(--wrn-color-surface),
        0 0 0 4px var(--wrn-color-primary);
    }

    .wrn-preferences__panel--language {
      gap: 0.15rem;
    }

    .wrn-preferences__panel--language button {
      width: 100%;
      color: var(--wrn-color-text);
    }

    .wrn-preferences__panel--language button span {
      display: grid;
      flex: none;
      width: 1.5rem;
      height: 1.5rem;
      place-items: center;
      border: 1px solid var(--wrn-color-border);
      border-radius: calc(var(--wrn-radius-sm, 0.55rem) - 2px);
      color: var(--wrn-color-text-muted, var(--wrn-color-muted));
      background: var(--wrn-color-surface);
      font-size: 0.625rem;
      font-weight: 600;
      letter-spacing: 0.02em;
    }

    .wrn-preferences__panel--language button[aria-pressed="true"] {
      font-weight: 600;
    }

    .wrn-preferences__panel--language button[aria-pressed="true"] span {
      border-color: color-mix(in srgb, var(--wrn-color-primary) 45%, var(--wrn-color-border));
      color: var(--wrn-color-primary);
    }

    .wrn-preferences__panel--language button[aria-pressed="true"]::after {
      width: 0.9rem;
      height: 0.9rem;
      margin-inline-start: auto;
      content: "";
      color: var(--wrn-color-primary);
      background: currentColor;
      mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='black' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m5 12 4 4L19 6'/%3E%3C/svg%3E")
        center / contain no-repeat;
    }

    @media (max-width: 640px) {
    .wrn-preferences[data-mobile-panel="sheet"] .wrn-preferences__panel {
        position: fixed;
        top: auto;
        right: 1rem;
        bottom: 1rem;
        left: 1rem;
        width: auto;
      }
    .wrn-preferences[data-mobile-panel="dropdown"] .wrn-preferences__panel {
        position: absolute;
        top: calc(100% + 0.5rem);
        right: 0;
        bottom: auto;
        left: auto;
        width: max-content;
        max-width: min(22rem, calc(100vw - 2rem));
      }
    }

    /* 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;
        }
  }
}