ai

frontend/history-ui/src/components/FileTree.svelte

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+<script lang="ts">
+    import type { TreeNode } from "../lib/types";
+    import FileTree from "./FileTree.svelte";
+
+    interface Props {
+        node: TreeNode;
+        selectedId: string | null;
+        onSelect: (documentId: string) => void;
+        depth?: number;
+    }
+
+    let { node, selectedId, onSelect, depth = 0 }: Props = $props();
+
+    let expanded = $state<Record<string, boolean>>({});
+
+    function toggle(path: string) {
+        expanded[path] = !expanded[path];
+    }
+
+    function isExpanded(path: string): boolean {
+        return expanded[path] ?? true;
+    }
+</script>
+
+{#if node.isFolder && depth === 0}
+    {#each node.children as child}
+        <FileTree
+            node={child}
+            {selectedId}
+            {onSelect}
+            depth={depth + 1}
+        />
+    {/each}
+{:else if node.isFolder}
+    <div class="tree-folder">
+        <button
+            class="tree-item folder"
+            style="padding-left: {depth * 16}px"
+            onclick={() => toggle(node.path)}
+        >
+            <span class="expand-icon"
+                >{isExpanded(node.path) ? "▾" : "▸"}</span
+            >
+            <span class="folder-icon">📁</span>
+            <span class="node-name">{node.name}</span>
+        </button>
+        {#if isExpanded(node.path)}
+            {#each node.children as child}
+                <FileTree
+                    node={child}
+                    {selectedId}
+                    {onSelect}
+                    depth={depth + 1}
+                />
+            {/each}
+        {/if}
+    </div>
+{:else}
+    <button
+        class="tree-item file"
+        class:selected={node.document?.documentId === selectedId}
+        class:deleted={node.isDeleted}
+        style="padding-left: {depth * 16 + 8}px"
+        onclick={() =>
+            node.document && onSelect(node.document.documentId)}
+    >
+        <span class="file-icon">{node.isDeleted ? "○" : "●"}</span>
+        <span class="node-name">{node.name}</span>
+    </button>
+{/if}
+
+<style>
+    .tree-item {
+        display: flex;
+        align-items: center;
+        gap: 6px;
+        width: 100%;
+        padding: 3px 12px;
+        font-size: 13px;
+        text-align: left;
+        transition: background 0.1s;
+        white-space: nowrap;
+        overflow: hidden;
+    }
+
+    .tree-item:hover {
+        background: var(--bg-hover);
+    }
+
+    .tree-item.selected {
+        background: var(--blue-bg);
+    }
+
+    .tree-item.deleted {
+        opacity: 0.4;
+    }
+
+    .tree-item.deleted .node-name {
+        text-decoration: line-through;
+    }
+
+    .expand-icon {
+        font-size: 10px;
+        width: 12px;
+        flex-shrink: 0;
+        color: var(--text-muted);
+    }
+
+    .folder-icon {
+        font-size: 14px;
+        flex-shrink: 0;
+    }
+
+    .file-icon {
+        font-size: 8px;
+        flex-shrink: 0;
+        color: var(--text-subtle);
+    }
+
+    .node-name {
+        overflow: hidden;
+        text-overflow: ellipsis;
+    }
+</style>