From a104c094b588560f955ff52dc7f949cf3c355f94 Mon Sep 17 00:00:00 2001
From: Adam Malczewski <github@tradam.dev>
Date: Sat, 5 Sep 2026 00:34:45 +0900
Subject: feat(layout): plan 01 — tile engine + view registry
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/features/layout/ui/TileSplit.svelte | 96 +++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 src/features/layout/ui/TileSplit.svelte

(limited to 'src/features/layout/ui/TileSplit.svelte')

diff --git a/src/features/layout/ui/TileSplit.svelte b/src/features/layout/ui/TileSplit.svelte
new file mode 100644
index 0000000..1f0ec64
--- /dev/null
+++ b/src/features/layout/ui/TileSplit.svelte
@@ -0,0 +1,96 @@
+<script lang="ts">
+  /**
+   * A flex row/column of child subtrees. Child sizing comes from the tree:
+   * `size` → flex-grow (+ optional `basis`), and `collapsible` children get
+   * today's EXACT sidebar behavior — width/translate transition, `lg:relative`
+   * in-flow push vs `max-lg:absolute` overlay with a backdrop. Collapse state
+   * is chrome (per-node-id), owned by the injected collapse store.
+   */
+  import type { LayoutOp, Path, SplitNode } from "@dispatch/layout-contract";
+  import type { CollapseStore } from "../logic/collapse";
+  import TileNode from "./TileNode.svelte";
+
+  let {
+    node,
+    path,
+    ports,
+    collapse,
+    onEdit,
+  }: {
+    node: SplitNode;
+    path: Path;
+    ports?: unknown;
+    collapse: CollapseStore;
+    onEdit: (ops: readonly LayoutOp[]) => void;
+  } = $props();
+
+  const state = $derived($collapse);
+
+  /** Collapse state key: the node's id when present, else its path (stable enough for chrome). */
+  function keyOf(i: number, id: string | undefined): string {
+    return id ?? [...path, i].map((s) => String(s)).join(":");
+  }
+
+  function isOpen(i: number, id: string | undefined): boolean {
+    const key = keyOf(i, id);
+    return state.openByNode[key] ?? state.defaultOpen;
+  }
+</script>
+
+{#if node.dir === "col"}
+  <div class="flex min-h-0 w-full flex-col">
+    {#each node.children as child, i (i)}
+      {@const key = keyOf(i, child.node.id)}
+      <div
+        class="min-h-0 min-w-0"
+        style={"flex: " + child.size + " 1 " + (child.basis === undefined ? "0%" : child.basis + "px")}
+      >
+        <TileNode node={child.node} path={[...path, i]} {ports} {collapse} {onEdit} />
+      </div>
+    {/each}
+  </div>
+{:else}
+  <div class="flex min-h-0 h-full flex-row">
+    {#each node.children as child, i (i)}
+      {@const key = keyOf(i, child.node.id)}
+      {#if child.collapsible}
+        {@const open = isOpen(i, child.node.id)}
+        <!-- svelte-ignore a11y_no_static_element_interactions -->
+        <aside
+          class="flex shrink-0 flex-col overflow-x-hidden transition-[width] duration-300 ease-out max-lg:absolute max-lg:inset-y-0 max-lg:right-0 max-lg:z-30 lg:relative"
+          style="width: {open ? (child.basis ?? 320) : 0}px"
+          data-testid="collapsible-child"
+          data-open={open}
+        >
+          <div
+            class="flex h-full flex-col gap-2 overflow-y-auto bg-base-100 pt-3 pr-3 pb-3 transition-transform duration-300 ease-out"
+            style="width: {child.basis ?? 320}px; transform: translateX({open ? '0' : '100%'})"
+          >
+            <TileNode node={child.node} path={[...path, i]} {ports} {collapse} {onEdit} />
+          </div>
+        </aside>
+        {#if open}
+          <!-- Backdrop: only on narrow screens (overlay mode), click to close. -->
+          <!-- svelte-ignore a11y_no_static_element_interactions -->
+          <div
+            class="fixed inset-0 z-20 bg-black/30 lg:hidden"
+            role="button"
+            tabindex="0"
+            aria-label="Close sidebar"
+            onclick={() => collapse.setOpen(key, false)}
+            onkeydown={(e) => {
+              if (e.key === "Escape" || e.key === "Enter") collapse.setOpen(key, false);
+            }}
+          ></div>
+        {/if}
+      {:else}
+        <div
+          class="min-h-0 min-w-0"
+          style={"flex: " + child.size + " 1 " + (child.basis === undefined ? "0%" : child.basis + "px")}
+        >
+          <TileNode node={child.node} path={[...path, i]} {ports} {collapse} {onEdit} />
+        </div>
+      {/if}
+    {/each}
+  </div>
+{/if}
-- 
cgit v1.2.3