From 31077dbd39a25eecd24a1dca0f8c9d1879265277 Mon Sep 17 00:00:00 2001
From: HsiangNianian <i@jyunko.cn>
Date: Thu, 15 Jan 2026 17:36:36 +0800
Subject: feat: Implement custom dropdown components for version selection in
 BottomBar and ModLoaderSelector, enhancing user interaction and UI
 consistency

---
 ui/src/components/CustomSelect.svelte | 136 ++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 ui/src/components/CustomSelect.svelte

(limited to 'ui/src/components/CustomSelect.svelte')

diff --git a/ui/src/components/CustomSelect.svelte b/ui/src/components/CustomSelect.svelte
new file mode 100644
index 0000000..2e89c75
--- /dev/null
+++ b/ui/src/components/CustomSelect.svelte
@@ -0,0 +1,136 @@
+<script lang="ts">
+  import { ChevronDown, Check } from 'lucide-svelte';
+
+  interface Option {
+    value: string;
+    label: string;
+    disabled?: boolean;
+  }
+
+  interface Props {
+    options: Option[];
+    value: string;
+    placeholder?: string;
+    disabled?: boolean;
+    class?: string;
+    onchange?: (value: string) => void;
+  }
+
+  let { 
+    options, 
+    value = $bindable(), 
+    placeholder = "Select...", 
+    disabled = false,
+    class: className = "",
+    onchange
+  }: Props = $props();
+
+  let isOpen = $state(false);
+  let containerRef: HTMLDivElement;
+
+  let selectedOption = $derived(options.find(o => o.value === value));
+
+  function toggle() {
+    if (!disabled) {
+      isOpen = !isOpen;
+    }
+  }
+
+  function select(option: Option) {
+    if (option.disabled) return;
+    value = option.value;
+    isOpen = false;
+    onchange?.(option.value);
+  }
+
+  function handleKeydown(e: KeyboardEvent) {
+    if (disabled) return;
+    
+    if (e.key === 'Enter' || e.key === ' ') {
+      e.preventDefault();
+      toggle();
+    } else if (e.key === 'Escape') {
+      isOpen = false;
+    } else if (e.key === 'ArrowDown' && isOpen) {
+      e.preventDefault();
+      const currentIndex = options.findIndex(o => o.value === value);
+      const nextIndex = Math.min(currentIndex + 1, options.length - 1);
+      if (!options[nextIndex].disabled) {
+        value = options[nextIndex].value;
+      }
+    } else if (e.key === 'ArrowUp' && isOpen) {
+      e.preventDefault();
+      const currentIndex = options.findIndex(o => o.value === value);
+      const prevIndex = Math.max(currentIndex - 1, 0);
+      if (!options[prevIndex].disabled) {
+        value = options[prevIndex].value;
+      }
+    }
+  }
+
+  function handleClickOutside(e: MouseEvent) {
+    if (containerRef && !containerRef.contains(e.target as Node)) {
+      isOpen = false;
+    }
+  }
+
+  $effect(() => {
+    if (isOpen) {
+      document.addEventListener('click', handleClickOutside);
+      return () => document.removeEventListener('click', handleClickOutside);
+    }
+  });
+</script>
+
+<div 
+  bind:this={containerRef}
+  class="relative {className}"
+>
+  <!-- Trigger Button -->
+  <button
+    type="button"
+    onclick={toggle}
+    onkeydown={handleKeydown}
+    {disabled}
+    class="w-full flex items-center justify-between gap-2 px-3 py-2 pr-8 text-left
+           bg-zinc-900 border border-zinc-700 rounded-md text-sm text-zinc-200
+           hover:border-zinc-600 focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500/30
+           transition-colors cursor-pointer outline-none
+           disabled:opacity-50 disabled:cursor-not-allowed disabled:hover:border-zinc-700"
+  >
+    <span class="truncate {!selectedOption ? 'text-zinc-500' : ''}">
+      {selectedOption?.label || placeholder}
+    </span>
+    <ChevronDown 
+      size={14} 
+      class="absolute right-3 top-1/2 -translate-y-1/2 text-zinc-500 transition-transform duration-200 {isOpen ? 'rotate-180' : ''}" 
+    />
+  </button>
+
+  <!-- Dropdown Menu -->
+  {#if isOpen}
+    <div 
+      class="absolute z-50 w-full mt-1 py-1 bg-zinc-900 border border-zinc-700 rounded-md shadow-xl
+             max-h-60 overflow-y-auto animate-in fade-in slide-in-from-top-1 duration-150"
+    >
+      {#each options as option}
+        <button
+          type="button"
+          onclick={() => select(option)}
+          disabled={option.disabled}
+          class="w-full flex items-center justify-between px-3 py-2 text-sm text-left
+                 transition-colors outline-none
+                 {option.value === value 
+                   ? 'bg-indigo-600 text-white' 
+                   : 'text-zinc-300 hover:bg-zinc-800'}
+                 {option.disabled ? 'opacity-40 cursor-not-allowed' : 'cursor-pointer'}"
+        >
+          <span class="truncate">{option.label}</span>
+          {#if option.value === value}
+            <Check size={14} class="shrink-0 ml-2" />
+          {/if}
+        </button>
+      {/each}
+    </div>
+  {/if}
+</div>
-- 
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