파일 삭제 기능 추가, undo / redo 기능에 적용

CLAUDE.md

@@ -95,8 +95,9 @@ renderer.js → rename.js, move.js → grid.js → handlers/*
 - `O` — 폴더 열기
 - `S` — 이름 변경 실행
 - `A` — 전체 선택
-- `U` — Undo (되돌리기)
-- `R` — Redo (다시하기)
+- `Cmd+Z` — Undo (되돌리기)
+- `Cmd+Shift+Z` — Redo (다시하기)
+- `P` — 미리보기 on/off 토글
 
 **Undo / Redo** (`history.js`):
 - 파일 순서 변경(드래그, 정렬)만 추적; 파일시스템 변경(rename, move)은 히스토리 리셋

src/main/ipc/files.js

@@ -1,4 +1,4 @@
-const { ipcMain } = require('electron');
+const { ipcMain, app } = require('electron');
 const path = require('path');
 const fs = require('fs');
 const crypto = require('crypto');
@@ -73,6 +73,59 @@ function register() {
     return { moved, errors };
   });
 
+  // 삭제 → 스테이징 폴더로 이동 (undo 가능)
+  ipcMain.handle('stage-delete-files', async (_event, filePaths) => {
+    const batchDir = path.join(app.getPath('userData'), 'deleted_staging', Date.now().toString());
+    fs.mkdirSync(batchDir, { recursive: true });
+
+    const staged = [];
+    const errors = [];
+    for (const fp of filePaths) {
+      const name = path.basename(fp);
+      const dest = path.join(batchDir, name);
+      try {
+        fs.renameSync(fp, dest);
+        staged.push({ name, originalPath: fp, stagingPath: dest });
+      } catch (e) {
+        if (e.code === 'EXDEV') {
+          try {
+            fs.copyFileSync(fp, dest);
+            fs.unlinkSync(fp);
+            staged.push({ name, originalPath: fp, stagingPath: dest });
+          } catch (e2) { errors.push(`${name}: ${e2.message}`); }
+        } else { errors.push(`${name}: ${e.message}`); }
+      }
+    }
+    if (!staged.length) try { fs.rmdirSync(batchDir); } catch {}
+    return { staged, errors };
+  });
+
+  // 스테이징 파일 원래 위치로 복원 (undo delete)
+  ipcMain.handle('restore-staged-files', async (_event, deletedEntries) => {
+    const restored = [];
+    const errors   = [];
+    for (const { name, originalPath, stagingPath } of deletedEntries) {
+      if (fs.existsSync(originalPath)) {
+        errors.push(`${name}: 같은 이름의 파일이 이미 존재합니다`);
+        continue;
+      }
+      try {
+        fs.mkdirSync(path.dirname(originalPath), { recursive: true });
+        fs.renameSync(stagingPath, originalPath);
+        restored.push(originalPath);
+      } catch (e) {
+        if (e.code === 'EXDEV') {
+          try {
+            fs.copyFileSync(stagingPath, originalPath);
+            fs.unlinkSync(stagingPath);
+            restored.push(originalPath);
+          } catch (e2) { errors.push(`${name}: ${e2.message}`); }
+        } else { errors.push(`${name}: ${e.message}`); }
+      }
+    }
+    return { restored, errors };
+  });
+
   ipcMain.handle('rename-files', async (_event, { folderPath, files, prefix, digits }) => {
     const errors = [];
     const pad = (n) => String(n + 1).padStart(digits, '0');

src/preload/index.js

@@ -19,4 +19,6 @@ contextBridge.exposeInMainWorld('api', {
   setPreviewOn:       (on)       => ipcRenderer.invoke('set-preview-on', on),
   checkFilesExist:    (folder, names) => ipcRenderer.invoke('check-files-exist', folder, names),
   moveFiles:          (args)     => ipcRenderer.invoke('move-files', args),
+  stageDeleteFiles:   (paths)    => ipcRenderer.invoke('stage-delete-files', paths),
+  restoreStagedFiles: (entries)  => ipcRenderer.invoke('restore-staged-files', entries),
 });

src/renderer/delete.js

@@ -0,0 +1,95 @@
+import { state }                                        from './state.js';
+import { setStatus, showToast }                          from './ui.js';
+import { renderGrid, showEmptyGrid }                     from './grid.js';
+import * as history                                      from './history.js';
+
+const deleteModal    = document.getElementById('delete-modal');
+const deleteFileList = document.getElementById('delete-file-list');
+const deleteCancelBtn  = document.getElementById('delete-cancel');
+const deleteConfirmBtn = document.getElementById('delete-confirm');
+const btnRename = document.getElementById('btn-rename');
+
+let _pendingFiles = null;
+
+deleteCancelBtn.addEventListener('click', () => {
+  deleteModal.style.display = 'none';
+  _pendingFiles = null;
+});
+
+deleteConfirmBtn.addEventListener('click', async () => {
+  if (!_pendingFiles) return;
+  const files = _pendingFiles;
+  _pendingFiles = null;
+  deleteModal.style.display = 'none';
+  await _doDelete(files);
+});
+
+export function deleteSelected() {
+  if (!state.selectedIdxs.size) return;
+  const filesToDelete = [...state.selectedIdxs].sort((a, b) => a - b)
+    .map(i => state.files[i]).filter(Boolean);
+  if (!filesToDelete.length) return;
+  deleteFileList.replaceChildren(...filesToDelete.map(f => {
+    const li = document.createElement('li');
+    li.textContent = f.name;
+    return li;
+  }));
+  _pendingFiles = filesToDelete;
+  deleteModal.style.display = 'flex';
+}
+
+export function init(gridEl) {
+  gridEl.addEventListener('click', (e) => {
+    const btn = e.target.closest('.card-delete');
+    if (!btn) return;
+
+    const card = btn.closest('.card');
+    if (!card) return;
+    const idx = parseInt(card.dataset.idx);
+
+    let filesToDelete;
+    if (state.selectedIdxs.size > 0 && state.selectedIdxs.has(idx)) {
+      filesToDelete = [...state.selectedIdxs].sort((a, b) => a - b)
+        .map(i => state.files[i]).filter(Boolean);
+    } else {
+      filesToDelete = [state.files[idx]].filter(Boolean);
+    }
+
+    if (!filesToDelete.length) return;
+
+    deleteFileList.replaceChildren(...filesToDelete.map(f => {
+      const li = document.createElement('li');
+      li.textContent = f.name;
+      return li;
+    }));
+    _pendingFiles = filesToDelete;
+    deleteModal.style.display = 'flex';
+  });
+}
+
+async function _doDelete(files) {
+  const result = await window.api.stageDeleteFiles(files.map(f => f.path));
+
+  if (result.errors.length) {
+    alert('일부 오류:\n' + result.errors.join('\n'));
+  }
+
+  const stagedSet = new Set(result.staged.map(s => s.originalPath));
+  for (let i = state.files.length - 1; i >= 0; i--) {
+    if (stagedSet.has(state.files[i].path)) state.files.splice(i, 1);
+  }
+  state.selectedIdxs.clear();
+
+  history.pushDelete([...state.files], result.staged);
+
+  const n = result.staged.length;
+  if (!state.files.length) {
+    showEmptyGrid();
+    btnRename.disabled = true;
+    setStatus('이미지 파일 없음', false);
+  } else {
+    renderGrid();
+    setStatus(`${n}개 파일 삭제됨`, true);
+  }
+  if (n > 0) showToast(`${n}개 파일 삭제됨`, '#8b1a1a', '#ffd0d0');
+}

src/renderer/grid.js

@@ -59,6 +59,12 @@ export function createCard(file, idx) {
   checkBadge.className = 'card-check';
   checkBadge.textContent = '✓';
 
+  const deleteBtn = document.createElement('button');
+  deleteBtn.className = 'card-delete';
+  deleteBtn.title = '삭제';
+  deleteBtn.textContent = '×';
+  deleteBtn.draggable = false;
+
   // src 없이 생성 — IntersectionObserver가 뷰포트 진입 시 로딩
   const thumb = document.createElement('img');
   thumb.className = 'card-thumb';
@@ -78,6 +84,7 @@ export function createCard(file, idx) {
   body.appendChild(newNameEl);
   card.appendChild(numBadge);
   card.appendChild(checkBadge);
+  card.appendChild(deleteBtn);
   card.appendChild(thumb);
   card.appendChild(body);
 

src/renderer/handlers/selection.js

@@ -27,6 +27,7 @@ export function init({ gridContainer, rubberBand, grid, state, callbacks }) {
 
 // 카드에 부착할 클릭 핸들러 (this = card element)
 export function onCardClick(e) {
+  if (e.target.closest('.card-delete')) return;
   e.stopPropagation();
   const idx = parseInt(this.dataset.idx);
   const isCtrl = e.ctrlKey || e.metaKey;

src/renderer/history.js

@@ -1,35 +1,62 @@
+// History entries
+//   reorder: { type:'reorder', files:[...], affectedPaths: Set|null }
+//   delete:  { type:'delete',  files:[...] /* filesAfter */,
+//              deletedEntries:[{name, originalPath, stagingPath}] /* mutable */ }
+
 const MAX = 50;
 let _stack    = [];
 let _cursor   = -1;
 let _onUpdate = null;
 
-export function setOnUpdate(fn) {
-  _onUpdate = fn;
+export function setOnUpdate(fn) { _onUpdate = fn; }
+
+// ── Push ─────────────────────────────────────────
+export function pushReorder(files, affectedPaths = null) {
+  _truncate();
+  _stack.push({
+    type: 'reorder',
+    files: [...files],
+    affectedPaths: affectedPaths ? new Set(affectedPaths) : null,
+  });
+  _finalize();
 }
 
-export function push(files, affectedPaths = null) {
-  _stack = _stack.slice(0, _cursor + 1);
-  _stack.push({ files: [...files], affectedPaths: affectedPaths ? new Set(affectedPaths) : null });
+export function pushDelete(filesAfter, deletedEntries) {
+  _truncate();
+  _stack.push({ type: 'delete', files: [...filesAfter], deletedEntries });
+  _finalize();
+}
+
+function _truncate() { _stack = _stack.slice(0, _cursor + 1); }
+function _finalize() {
   if (_stack.length > MAX) _stack.shift();
   _cursor = _stack.length - 1;
   _onUpdate?.();
 }
 
-// Returns { files, affectedPaths } where affectedPaths are from the entry being undone
+// ── Undo / Redo ───────────────────────────────────
+// Returns { entry, targetFiles }
+//   entry       — the entry being undone/redone (for type-specific side-effects)
+//   targetFiles — the files[] to restore in state
 export function undo() {
   if (!canUndo()) return null;
-  const affectedPaths = _stack[_cursor].affectedPaths;
+  const entry = _stack[_cursor]; // operation being undone
   --_cursor;
   _onUpdate?.();
-  return { files: [..._stack[_cursor].files], affectedPaths };
+  return { entry, targetFiles: [..._stack[_cursor].files] };
 }
 
-// Returns { files, affectedPaths } from the entry being redone
 export function redo() {
   if (!canRedo()) return null;
   ++_cursor;
   _onUpdate?.();
-  return { files: [..._stack[_cursor].files], affectedPaths: _stack[_cursor].affectedPaths };
+  const entry = _stack[_cursor];
+  return { entry, targetFiles: [...entry.files] };
+}
+
+// Peek at the next redo entry without moving cursor (for pre-processing)
+export function peekRedo() {
+  return canRedo() ? _stack[_cursor + 1] : null;
 }
 
 export function canUndo() { return _cursor > 0; }

src/renderer/index.html

@@ -102,6 +102,17 @@
   </div>
 </div>
 
+<div id="delete-modal" class="modal-overlay" style="display:none;">
+  <div class="modal-box">
+    <p class="modal-msg">아래 파일을 삭제합니다.</p>
+    <ul id="delete-file-list" class="modal-conflict-list"></ul>
+    <div class="modal-actions">
+      <button id="delete-cancel" class="btn btn-ghost">취소</button>
+      <button id="delete-confirm" class="btn btn-warning">확인</button>
+    </div>
+  </div>
+</div>
+
 <div id="move-error-modal" class="modal-overlay" style="display:none;">
   <div class="modal-box">
     <p class="modal-msg">새로운 이름의 파일도 존재합니다.</p>

src/renderer/move.js

@@ -86,7 +86,7 @@ async function _doMoveFiles(targetPath, files) {
     state.files.push(...newList);
     state.selectedIdxs.clear();
     history.reset();
-    history.push(state.files);
+    history.pushReorder(state.files);
     if (!newList.length) {
       showEmptyGrid();
       btnRename.disabled = true;

src/renderer/rename.js

@@ -77,7 +77,7 @@ export async function doRename() {
     state.selectedIdxs.clear();
     renderGrid();
     history.reset();
-    history.push(state.files);
+    history.pushReorder(state.files);
   } catch (e) {
     hideLoading();
     alert('오류 발생: ' + e.message);

src/renderer/renderer.js

@@ -7,6 +7,7 @@ import {
 } from './grid.js';
 import { doRename }         from './rename.js';
 import { handleFolderDrop } from './move.js';
+import * as deleteHandler   from './delete.js';
 import * as pinchZoom       from './handlers/pinch-zoom.js';
 import * as selection       from './handlers/selection.js';
 import * as dragDrop        from './handlers/drag-drop.js';
@@ -39,13 +40,14 @@ history.setOnUpdate(updateHistoryButtons);
 
 const callbacks = {
   refreshCardSelection, updateSelCount, updateNumberBadges, updateNewNameLabels,
-  pushHistory: (affectedPaths) => history.push(state.files, affectedPaths),
+  pushHistory: (affectedPaths) => history.pushReorder(state.files, affectedPaths),
 };
 
 pinchZoom.init({ gridContainer, thumbSizeHint });
 selection.init({ gridContainer, rubberBand, grid, state, callbacks });
 dragDrop.init({ grid, gridContainer, dragGhostEl, state, callbacks, fileExplorerEl: fileExplorerContainer, onFolderDrop: handleFolderDrop });
 hoverPreview.init();
+deleteHandler.init(grid);
 fileExplorer.init(fileExplorerContainer, loadFolder);
 
 window.api.onFullscreenChange((isFullscreen) => {
@@ -93,8 +95,10 @@ document.addEventListener('keydown', (e) => {
     refreshCardSelection();
     updateSelCount();
   }
-  if (e.code === 'KeyU') performUndo();
-  if (e.code === 'KeyR') performRedo();
+  if (e.metaKey && !e.shiftKey && e.code === 'KeyZ') { e.preventDefault(); performUndo(); }
+  if (e.metaKey && e.shiftKey && e.code === 'KeyZ') { e.preventDefault(); performRedo(); }
+  if (e.code === 'KeyP') btnPreviewToggle.click();
+  if (e.code === 'Backspace' || e.code === 'Delete') deleteHandler.deleteSelected();
 });
 
 // ── 폴더 열기 (다이얼로그) ───────────────────────
@@ -145,7 +149,7 @@ async function loadFolder(folder) {
   updatePreview();
   btnRename.disabled = false;
   history.reset();
-  history.push(state.files);
+  history.pushReorder(state.files);
 }
 
 // ── 정렬 ─────────────────────────────────────────
@@ -158,7 +162,7 @@ async function sortFiles(mode) {
   updateSortButtons();
   await renderGrid();
   setStatus(`${mode === 'name' ? '이름순' : '날짜순'}으로 정렬됨`, true);
-  history.push(state.files);
+  history.pushReorder(state.files);
 }
 
 function updateSortButtons() {
@@ -167,43 +171,84 @@ function updateSortButtons() {
 }
 
 // ── Undo / Redo ───────────────────────────────────
+let _historyBusy = false;
+
 function updateHistoryButtons() {
   btnUndo.disabled = !history.canUndo();
   btnRedo.disabled = !history.canRedo();
 }
 
-function performUndo() {
-  if (!history.canUndo()) {
-    showToast('더 이상 되돌릴 수 없습니다');
+async function performUndo() {
+  if (_historyBusy || !history.canUndo()) {
+    if (!history.canUndo()) showToast('더 이상 되돌릴 수 없습니다');
     return;
   }
-  _applyHistorySnapshot(history.undo());
+  _historyBusy = true;
+  try {
+    const { entry, targetFiles } = history.undo();
+    if (entry.type === 'delete') {
+      const { restored, errors } = await window.api.restoreStagedFiles(entry.deletedEntries);
+      if (errors.length) showToast('일부 파일 복원 실패: ' + errors[0]);
+      _applyHistorySnapshot(targetFiles, new Set(restored));
+      if (restored.length) setStatus(`${restored.length}개 파일 복원됨`, true);
+    } else {
+      _applyHistorySnapshot(targetFiles, entry.affectedPaths);
+    }
+  } finally {
+    _historyBusy = false;
+  }
 }
 
-function performRedo() {
-  if (!history.canRedo()) {
-    showToast('마지막 작업 상태입니다');
+async function performRedo() {
+  if (_historyBusy || !history.canRedo()) {
+    if (!history.canRedo()) showToast('마지막 작업 상태입니다');
     return;
   }
-  _applyHistorySnapshot(history.redo());
+  _historyBusy = true;
+  try {
+    const nextEntry = history.peekRedo();
+    if (nextEntry.type === 'delete') {
+      const pathsToRedo = nextEntry.deletedEntries.map(e => e.originalPath);
+      const { staged, errors } = await window.api.stageDeleteFiles(pathsToRedo);
+      if (errors.length) showToast('일부 파일 삭제 실패: ' + errors[0]);
+      const stagedByPath = new Map(staged.map(s => [s.originalPath, s.stagingPath]));
+      nextEntry.deletedEntries.forEach(e => {
+        if (stagedByPath.has(e.originalPath)) e.stagingPath = stagedByPath.get(e.originalPath);
+      });
+      const { targetFiles } = history.redo();
+      _applyHistorySnapshot(targetFiles, null);
+      if (staged.length) setStatus(`${staged.length}개 파일 삭제됨`, true);
+    } else {
+      const { entry, targetFiles } = history.redo();
+      _applyHistorySnapshot(targetFiles, entry.affectedPaths);
+    }
+  } finally {
+    _historyBusy = false;
+  }
 }
 
-function _applyHistorySnapshot({ files, affectedPaths }) {
+function _applyHistorySnapshot(targetFiles, affectedPaths = null) {
   state.files.length = 0;
-  state.files.push(...files);
+  state.files.push(...targetFiles);
   state.selectedIdxs.clear();
 
-  if (affectedPaths) {
+  if (affectedPaths && affectedPaths.size > 0) {
     const pathToIdx = new Map(state.files.map((f, i) => [f.path, i]));
-    affectedPaths.forEach(path => {
-      const idx = pathToIdx.get(path);
+    affectedPaths.forEach(p => {
+      const idx = pathToIdx.get(p);
       if (idx !== undefined) state.selectedIdxs.add(idx);
     });
   }
 
   state.sortMode = null;
   updateSortButtons();
+  if (!state.files.length) {
+    showEmptyGrid();
+    btnRename.disabled = true;
+  } else {
     renderGrid();
+    btnRename.disabled = false;
+  }
   updateHistoryButtons();
 }
 

src/renderer/style.css

@@ -307,6 +307,19 @@ main {
 }
 .card.selected .card-check { opacity: 1; }
 
+.card-delete {
+  position: absolute; top: 8px; right: 8px;
+  width: 22px; height: 22px; border-radius: 50%; border: none;
+  background: rgba(200, 40, 40, 0.88); color: #fff;
+  font-size: 16px; line-height: 1;
+  display: flex; align-items: center; justify-content: center;
+  cursor: pointer; padding: 0;
+  opacity: 0; transition: opacity .15s, transform .1s;
+  z-index: 3;
+}
+.card:hover .card-delete { opacity: 1; }
+.card-delete:hover { background: rgb(210, 30, 30); transform: scale(1.12); }
+
 .card-name {
   font-size: 11px; color: var(--muted);
   font-family: 'JetBrains Mono', monospace;