refactor(FileItem, FileList, FilesPage): enhance file selection UI and improve checkbox handling

- Added isSelected prop to FileItem for visual indication of selection.
- Updated FileList to manage selected file IDs and pass selection state to FileItem.
- Enhanced FilesPage checkbox handling with improved visibility on hover and selection state.
- Introduced CheckboxContainer for consistent styling of checkboxes across components.

src/renderer/src/pages/files/FileItem.tsx

@@ -29,6 +29,7 @@ interface FileItemProps {
   }
   style?: React.CSSProperties
   gridTemplate?: string
+  isSelected?: boolean
 }
 
 const getFileIcon = (type?: string) => {
@@ -79,13 +80,17 @@ const getFileIcon = (type?: string) => {
   return <FileUnknownFilled />
 }
 
-const FileItem: React.FC<FileItemProps> = ({ fileInfo, style, gridTemplate = '' }) => {
+const FileItem: React.FC<FileItemProps> = ({ fileInfo, style, gridTemplate = '', isSelected = false }) => {
   const { name, ext, size, created_at, count, actions, icon, checkbox } = fileInfo
 
   return (
-    <FileItemCard style={style}>
+    <FileItemCard style={style} className={isSelected ? 'selected' : ''}>
       <FileGrid style={{ gridTemplateColumns: gridTemplate }}>
-        {checkbox && <FileCell>{checkbox}</FileCell>}
+        {checkbox && (
+          <FileCell>
+            <CheckboxContainer className="file-checkbox">{checkbox}</CheckboxContainer>
+          </FileCell>
+        )}
         <FileCell>
           <FileIcon>{icon || getFileIcon(ext)}</FileIcon>
         </FileCell>
@@ -116,11 +121,26 @@ const FileItemCard = styled.div`
     box-shadow 0.2s ease,
     background-color 0.2s ease;
   --shadow-color: rgba(0, 0, 0, 0.05);
+
   &:hover {
     box-shadow:
       0 10px 15px -3px var(--shadow-color),
       0 4px 6px -4px var(--shadow-color);
   }
+
+  .file-checkbox {
+    opacity: 0;
+    transition: opacity 0.2s ease;
+  }
+
+  &:hover .file-checkbox {
+    opacity: 1;
+  }
+
+  &.selected .file-checkbox {
+    opacity: 1;
+  }
+
   body[theme-mode='dark'] & {
     --shadow-color: rgba(255, 255, 255, 0.02);
   }
@@ -178,4 +198,10 @@ const FileCount = styled.div`
   color: var(--color-text-2);
 `
 
+const CheckboxContainer = styled.div`
+  display: flex;
+  align-items: center;
+  justify-content: center;
+`
+
 export default memo(FileItem)

src/renderer/src/pages/files/FileList.tsx

@@ -23,7 +23,7 @@ interface FileItemProps {
   columnWidths?: string
 }
 
-const FileList: React.FC<FileItemProps> = ({ list, columnWidths }) => {
+const FileList: React.FC<FileItemProps> = ({ list, columnWidths, selectedFileIds = [] }) => {
   // if (id === FileTypes.IMAGE && files?.length && files?.length > 0) {
   //   return (
   //     <div style={{ padding: 16, overflowY: 'auto' }}>
@@ -90,6 +90,7 @@ const FileList: React.FC<FileItemProps> = ({ list, columnWidths }) => {
               actions: item.actions
             }}
             gridTemplate={columnWidths}
+            isSelected={selectedFileIds.includes(item.key as string)}
           />
         </div>
       )}

src/renderer/src/pages/files/FilesPage.tsx

@@ -267,12 +267,14 @@ const FilesPage: FC = () => {
           <TableHeader>
             <TableGrid style={{ gridTemplateColumns: GRID_TEMPLATE }}>
               <TableCell>
-                <Checkbox
-                  indeterminate={selectedFileIds.length > 0 && selectedFileIds.length < sortedFiles.length}
-                  checked={selectedFileIds.length === sortedFiles.length && sortedFiles.length > 0}
-                  onChange={(e) => handleSelectAll(e.target.checked)}
-                  disabled={sortedFiles.length === 0}
-                />
+                <CheckboxContainer className={`header-checkbox ${selectedFileIds.length > 0 ? 'selected' : ''}`}>
+                  <Checkbox
+                    indeterminate={selectedFileIds.length > 0 && selectedFileIds.length < sortedFiles.length}
+                    checked={selectedFileIds.length === sortedFiles.length && sortedFiles.length > 0}
+                    onChange={(e) => handleSelectAll(e.target.checked)}
+                    disabled={sortedFiles.length === 0}
+                  />
+                </CheckboxContainer>
               </TableCell>
               <TableCell>{/* 图标列 */}</TableCell>
               <TableCell>
@@ -471,6 +473,25 @@ const TableCell = styled.div`
 
 const TableHeader = styled.div`
   margin: 0 16px;
+
+  .header-checkbox {
+    opacity: 0;
+    transition: opacity 0.2s ease;
+  }
+
+  &:hover .header-checkbox {
+    opacity: 1;
+  }
+
+  .header-checkbox.selected {
+    opacity: 1;
+  }
+`
+
+const CheckboxContainer = styled.div`
+  display: flex;
+  align-items: center;
+  justify-content: center;
 `
 
 export default FilesPage