전략편집기 수정1

frontend/src/components/strategyEditor/StrategyEditorCanvas.tsx

@@ -33,9 +33,11 @@ import { buildSidewaysFilterNode } from '../../utils/sidewaysFilterPaletteStorag
 import {
   isPaletteHtmlDrag,
   isPaletteHtmlDragActive,
+  getLastHtmlPaletteDragClientXY,
   markPaletteHtmlDragEnd,
   needsPointerPaletteDrag,
   readPaletteHtmlDragData,
+  setHtmlPaletteDropRouter,
   setPaletteDragDropHandler,
   subscribePaletteDrag,
   type PaletteDragEvent,
@@ -1281,6 +1283,15 @@ function StrategyEditorCanvasInner({
   const clearPreviewRef = useRef(clearDropPreview);
   clearPreviewRef.current = clearDropPreview;
 
+  useLayoutEffect(() => {
+    if (needsPointerPaletteDrag()) return undefined;
+    setHtmlPaletteDropRouter((x, y, payload) => {
+      clearPreviewRef.current();
+      applyDropRef.current(payload, x, y);
+    });
+    return () => setHtmlPaletteDropRouter(null);
+  }, []);
+
   useLayoutEffect(() => {
     if (!needsPointerPaletteDrag()) return undefined;
     setPaletteDragDropHandler((ev) => {
@@ -1299,6 +1310,37 @@ function StrategyEditorCanvasInner({
   const lastPreviewAnchorRef = useRef<string | null>(null);
   const lastPreviewKeyRef = useRef<string | null>(null);
 
+  useEffect(() => {
+    if (needsPointerPaletteDrag()) return undefined;
+    let rafId = 0;
+    const tick = () => {
+      if (!isPaletteHtmlDragActive()) {
+        rafId = 0;
+        return;
+      }
+      const xy = getLastHtmlPaletteDragClientXY();
+      if (xy) {
+        const { flowPos, anchorId } = resolveDropFromClientRef.current(xy.x, xy.y);
+        if (anchorId) {
+          updatePreviewRef.current(anchorId, flowPos);
+          lastPreviewAnchorRef.current = anchorId;
+        } else if (lastPreviewAnchorRef.current != null) {
+          lastPreviewAnchorRef.current = null;
+          clearPreviewRef.current();
+        }
+      }
+      rafId = requestAnimationFrame(tick);
+    };
+    const onDragStart = () => {
+      if (!rafId) rafId = requestAnimationFrame(tick);
+    };
+    document.addEventListener('dragstart', onDragStart, true);
+    return () => {
+      document.removeEventListener('dragstart', onDragStart, true);
+      if (rafId) cancelAnimationFrame(rafId);
+    };
+  }, []);
+
   useEffect(() => {
     if (needsPointerPaletteDrag()) return;
     const onDocDragOver = (e: DragEvent) => {

frontend/src/components/strategyEditor/StrategyListEditor.tsx

@@ -32,10 +32,11 @@ import StartTimeframeCheckboxes from './StartTimeframeCheckboxes';
 import LogicGateOpToggle from './LogicGateOpToggle';
 import { formatStartCandleTypesLabel } from '../../utils/strategyStartNodes';
 import { buildSidewaysFilterNode } from '../../utils/sidewaysFilterPaletteStorage';
-import { isOverListEditor } from '../../utils/flowScreenProjection';
 import {
   findPaletteDropKeyAtPoint,
   needsPointerPaletteDrag,
+  readPaletteHtmlDragData,
+  setHtmlPaletteDropRouter,
   setPaletteDragDropHandler,
   subscribePaletteDrag,
   type PaletteDragPayload,
@@ -303,12 +304,9 @@ function StartSectionBlock({
     e.preventDefault();
     e.stopPropagation();
     setDragOverKey(null);
-    try {
+    const data = readPaletteHtmlDragData(e);
-      const data = JSON.parse(e.dataTransfer.getData('application/json'));
+    if (!data) return;
-      applyDrop(null, data);
+    applyDrop(null, data);
-    } catch {
-      /* ignore */
-    }
   };
 
   const handleDropOnNode = (targetId: string, data: { type: string; value: string; label: string; composite?: boolean }) => {
@@ -480,13 +478,22 @@ export default function StrategyListEditor({
   const applyDropRef = useRef(applyPaletteDropAtKey);
   applyDropRef.current = applyPaletteDropAtKey;
 
+  useLayoutEffect(() => {
+    if (needsPointerPaletteDrag()) return undefined;
+    setHtmlPaletteDropRouter((x, y, payload) => {
+      dragOverKeyRef.current = null;
+      setDragOverKey(null);
+      applyDropRef.current(findPaletteDropKeyAtPoint(x, y), payload);
+    });
+    return () => setHtmlPaletteDropRouter(null);
+  }, []);
+
   useLayoutEffect(() => {
     if (!needsPointerPaletteDrag()) return undefined;
     setPaletteDragDropHandler(ev => {
       if (ev.phase !== 'end') return;
       dragOverKeyRef.current = null;
       setDragOverKey(null);
-      if (!isOverListEditor(ev.x, ev.y)) return;
       applyDropRef.current(findPaletteDropKeyAtPoint(ev.x, ev.y), ev.payload);
     });
     return () => setPaletteDragDropHandler(null);
@@ -495,10 +502,6 @@ export default function StrategyListEditor({
   useEffect(() => {
     return subscribePaletteDrag(ev => {
       if (ev.phase === 'move') {
-        if (!isOverListEditor(ev.x, ev.y)) {
-          setDragOverKeyThrottled(null);
-          return;
-        }
         setDragOverKeyThrottled(findPaletteDropKeyAtPoint(ev.x, ev.y));
         return;
       }
@@ -519,14 +522,9 @@ export default function StrategyListEditor({
     e.preventDefault();
     e.stopPropagation();
     setDragOverKey(null);
-    try {
+    const data = readPaletteHtmlDragData(e);
-      const data = JSON.parse(e.dataTransfer.getData('application/json'));
+    if (!data) return;
-      if (data.type === 'start') {
+    applyDropRef.current(findPaletteDropKeyAtPoint(e.clientX, e.clientY) ?? LIST_DROP_KEY, data);
-        handleAddStart();
-      }
-    } catch {
-      /* ignore */
-    }
   };
 
   return (

frontend/src/utils/flowScreenProjection.ts

@@ -77,16 +77,33 @@ export function projectScreenToFlowPosition(
   );
 }
 
-/** 목록 방식 편집기 위인지 */
+/** 목록 방식 편집기 위인지 (rect hit-test) */
 export function isOverListEditor(clientX: number, clientY: number): boolean {
-  for (const el of elementsUnderDragPoint(clientX, clientY)) {
+  const editors = document.querySelectorAll<HTMLElement>('.se-list-editor');
-    if (el.closest('.se-list-editor')) return true;
+  for (const el of editors) {
+    const rect = el.getBoundingClientRect();
+    if (
+      clientX >= rect.left && clientX <= rect.right
+      && clientY >= rect.top && clientY <= rect.bottom
+    ) {
+      return true;
+    }
   }
   return false;
 }
 
 /** 팔레트 드롭 — 전략 빌더 캔버스 위인지 */
 export function isOverStrategyBuilder(clientX: number, clientY: number): boolean {
+  const canvas = document.querySelector<HTMLElement>('.se-canvas-wrap');
+  if (canvas) {
+    const rect = canvas.getBoundingClientRect();
+    if (
+      clientX >= rect.left && clientX <= rect.right
+      && clientY >= rect.top && clientY <= rect.bottom
+    ) {
+      return true;
+    }
+  }
   for (const el of elementsUnderDragPoint(clientX, clientY)) {
     if (el.closest('.se-palette-panel, .se-side-wrap--right')) continue;
     if (el.closest('.se-canvas-wrap, .react-flow__pane, .react-flow__renderer')) return true;
@@ -171,7 +188,7 @@ export function resolvePaletteDropClientPoint(
     return { flowPos, anchorId: domId };
   }
 
-  if (getActivePaletteDrag()) {
+  if (getActivePaletteDrag() || isPaletteHtmlDragActive()) {
     const flowHit = findAtFlow(flowPos, nodes);
     if (flowHit && isConnectTarget(flowHit.id)) {
       return { flowPos, anchorId: flowHit.id };

frontend/src/utils/paletteDragSession.ts

@@ -57,6 +57,23 @@ let lastDragClientXY: { x: number; y: number } | null = null;
 let htmlDragMouseTrackUnbind: (() => void) | null = null;
 let htmlPaletteDragActive = false;
 let lastHtmlDragClientXY: { x: number; y: number } | null = null;
+let activeHtmlDragPayload: PaletteDragPayload | null = null;
+
+type HtmlPaletteDropRouter = (
+  clientX: number,
+  clientY: number,
+  payload: PaletteDragPayload,
+) => void;
+
+let htmlDropRouter: HtmlPaletteDropRouter | null = null;
+
+export function setHtmlPaletteDropRouter(router: HtmlPaletteDropRouter | null): void {
+  htmlDropRouter = router;
+}
+
+export function getActiveHtmlDragPayload(): PaletteDragPayload | null {
+  return activeHtmlDragPayload;
+}
 
 function installHtmlPaletteDragGlobals() {
   if (typeof window === 'undefined') return;
@@ -84,7 +101,19 @@ function installHtmlPaletteDragGlobals() {
     stopHtmlDragMouseTracking();
     htmlPaletteDragActive = false;
     lastHtmlDragClientXY = null;
+    activeHtmlDragPayload = null;
   });
+
+  document.addEventListener('drop', (e) => {
+    if (!htmlPaletteDragActive) return;
+    e.preventDefault();
+    e.stopPropagation();
+    const payload = readPaletteHtmlDragDataFromEvent(e) ?? activeHtmlDragPayload;
+    if (!payload || !htmlDropRouter) return;
+    const x = e.clientX !== 0 || e.clientY !== 0 ? e.clientX : (lastHtmlDragClientXY?.x ?? 0);
+    const y = e.clientX !== 0 || e.clientY !== 0 ? e.clientY : (lastHtmlDragClientXY?.y ?? 0);
+    htmlDropRouter(x, y, payload);
+  }, true);
 }
 
 installHtmlPaletteDragGlobals();
@@ -388,6 +417,7 @@ export function startHtmlDragMouseTracking(
   clientY: number,
   payload: PaletteDragPayload,
 ): void {
+  activeHtmlDragPayload = payload;
   stopHtmlDragMouseTracking();
   if (clientX !== 0 || clientY !== 0) {
     lastHtmlDragClientXY = { x: clientX, y: clientY };
@@ -418,6 +448,18 @@ export function markPaletteHtmlDragEnd(): void {
   stopHtmlDragMouseTracking();
   htmlPaletteDragActive = false;
   lastHtmlDragClientXY = null;
+  activeHtmlDragPayload = null;
+}
+
+function readPaletteHtmlDragDataFromEvent(e: DragEvent): PaletteDragPayload | null {
+  const raw = e.dataTransfer?.getData('text/plain')
+    || e.dataTransfer?.getData('application/json');
+  if (!raw) return null;
+  try {
+    return JSON.parse(raw) as PaletteDragPayload;
+  } catch {
+    return null;
+  }
 }
 
 export function getLastHtmlPaletteDragClientXY(): { x: number; y: number } | null {
@@ -429,6 +471,7 @@ export function isPaletteHtmlDragActive(): boolean {
 }
 
 export function writePaletteHtmlDragData(e: React.DragEvent, payload: PaletteDragPayload): void {
+  activeHtmlDragPayload = payload;
   markPaletteHtmlDragStart();
   const json = JSON.stringify(payload);
   e.dataTransfer.setData('application/json', json);
@@ -445,17 +488,20 @@ export function isPaletteHtmlDrag(e: React.DragEvent): boolean {
 }
 
 export function readPaletteHtmlDragData(e: React.DragEvent): PaletteDragPayload | null {
-  const raw = e.dataTransfer.getData('text/plain')
+  return readPaletteHtmlDragDataFromEvent(e.nativeEvent) ?? activeHtmlDragPayload;
-    || e.dataTransfer.getData('application/json');
-  if (!raw) return null;
-  try {
-    return JSON.parse(raw) as PaletteDragPayload;
-  } catch {
-    return null;
-  }
 }
 
 export function findPaletteDropKeyAtPoint(x: number, y: number): string | null {
+  const hosts = Array.from(document.querySelectorAll<HTMLElement>('[data-palette-drop-key]'));
+  for (let i = hosts.length - 1; i >= 0; i--) {
+    const host = hosts[i];
+    const key = host.dataset.paletteDropKey;
+    if (!key) continue;
+    const rect = host.getBoundingClientRect();
+    if (x >= rect.left && x <= rect.right && y >= rect.top && y <= rect.bottom) {
+      return key;
+    }
+  }
   for (const el of elementsUnderDragPoint(x, y)) {
     const host = el.closest('[data-palette-drop-key]') as HTMLElement | null;
     if (host?.dataset.paletteDropKey) return host.dataset.paletteDropKey;