stable

2026-06-26 19:04:32 +09:00 · 2026-06-26 19:04:32 +09:00 · 077d4ab9ac
commit 077d4ab9ac
parent 86226ccc94
71 changed files with 2905 additions and 1063 deletions
--- a/js/history_system.js
+++ b/js/history_system.js
@ -0,0 +1,91 @@
+"use strict";
+
+// User-facing undo/redo for direct editing actions.
+(function (global) {
+  const MAX_HISTORY = 48;
+
+  function cloneSnapshot(snapshot) {
+    if (!snapshot) return null;
+    if (typeof structuredClone === "function") return structuredClone(snapshot);
+    return JSON.parse(JSON.stringify(snapshot));
+  }
+
+  function ensure(worldRef) {
+    if (!worldRef) return null;
+    if (!Array.isArray(worldRef._undoStack)) worldRef._undoStack = [];
+    if (!Array.isArray(worldRef._redoStack)) worldRef._redoStack = [];
+    return worldRef;
+  }
+
+  function snapshotKey(snapshot) {
+    try {
+      const clone = cloneSnapshot(snapshot);
+      if (clone) clone.c = 0;
+      return JSON.stringify(clone);
+    } catch (_) {
+      return "";
+    }
+  }
+
+  function capture(worldRef = global.world, label = "action") {
+    const world = ensure(worldRef);
+    if (!world || world._historyRestoring) return false;
+    const snap = global.TarinaiSnapshot?.createSnapshot?.(world);
+    if (!snap) return false;
+    const key = snapshotKey(snap);
+    if (key && key === world._lastUndoSnapshotKey) return false;
+    world._undoStack.push({ snapshot: cloneSnapshot(snap), key, label: String(label || "action"), time: world.time || 0 });
+    if (world._undoStack.length > MAX_HISTORY) world._undoStack.splice(0, world._undoStack.length - MAX_HISTORY);
+    world._redoStack.length = 0;
+    world._lastUndoSnapshotKey = key;
+    return true;
+  }
+
+  function restore(worldRef, entry, source) {
+    if (!worldRef || !entry?.snapshot || !global.TarinaiRestoreCoordinator?.restoreSnapshot) return false;
+    worldRef._historyRestoring = true;
+    try {
+      global.TarinaiRestoreCoordinator.restoreSnapshot(cloneSnapshot(entry.snapshot), worldRef, { source, syncUi: true });
+      worldRef._lastUndoSnapshotKey = snapshotKey(global.TarinaiSnapshot?.createSnapshot?.(worldRef));
+      return true;
+    } finally {
+      worldRef._historyRestoring = false;
+    }
+  }
+
+  function undo(worldRef = global.world) {
+    const world = ensure(worldRef);
+    if (!world || !world._undoStack.length) return { ok: false, reason: "empty" };
+    const current = global.TarinaiSnapshot?.createSnapshot?.(world);
+    const prev = world._undoStack.pop();
+    if (current) world._redoStack.push({ snapshot: cloneSnapshot(current), key: snapshotKey(current), label: "redo", time: world.time || 0 });
+    if (world._redoStack.length > MAX_HISTORY) world._redoStack.splice(0, world._redoStack.length - MAX_HISTORY);
+    const ok = restore(world, prev, "undo");
+    return { ok, label: prev.label || "" };
+  }
+
+  function redo(worldRef = global.world) {
+    const world = ensure(worldRef);
+    if (!world || !world._redoStack.length) return { ok: false, reason: "empty" };
+    const current = global.TarinaiSnapshot?.createSnapshot?.(world);
+    const next = world._redoStack.pop();
+    if (current) world._undoStack.push({ snapshot: cloneSnapshot(current), key: snapshotKey(current), label: "undo", time: world.time || 0 });
+    if (world._undoStack.length > MAX_HISTORY) world._undoStack.splice(0, world._undoStack.length - MAX_HISTORY);
+    const ok = restore(world, next, "redo");
+    return { ok, label: next.label || "" };
+  }
+
+  function clear(worldRef = global.world) {
+    const world = ensure(worldRef);
+    if (!world) return false;
+    world._undoStack.length = 0;
+    world._redoStack.length = 0;
+    world._lastUndoSnapshotKey = "";
+    return true;
+  }
+
+  function canUndo(worldRef = global.world) { return !!worldRef?._undoStack?.length; }
+  function canRedo(worldRef = global.world) { return !!worldRef?._redoStack?.length; }
+
+  global.TarinaiHistory = Object.freeze({ capture, undo, redo, clear, canUndo, canRedo });
+})(typeof window !== "undefined" ? window : globalThis);