feat: implement multi-language support, file drag-and-drop, and new UI controls for file management

sharepoint_browser.py

@@ -23,29 +23,177 @@ def load_settings():
     default_settings = {
         "client_id": "DIN_CLIENT_ID_HER",
         "tenant_id": "DIN_TENANT_ID_HER",
-        "temp_dir": "C:\\Temp_SP"
+        "temp_dir": "C:\\Temp_SP",
+        "language": "da" # da eller en
     }
     if not os.path.exists(SETTINGS_FILE):
-        with open(SETTINGS_FILE, 'w') as f:
+        with open(SETTINGS_FILE, 'w', encoding='utf-8') as f:
             json.dump(default_settings, f, indent=4)
         return default_settings
     
-    with open(SETTINGS_FILE, 'r') as f:
+    with open(SETTINGS_FILE, 'r', encoding='utf-8') as f:
         try:
             return json.load(f)
         except:
             return default_settings
 
+def save_settings(new_settings):
+    with open(SETTINGS_FILE, 'w', encoding='utf-8') as f:
+        json.dump(new_settings, f, indent=4)
+
 settings = load_settings()
 CLIENT_ID = settings.get("client_id")
 TENANT_ID = settings.get("tenant_id")
 AUTHORITY = f"https://login.microsoftonline.com/{TENANT_ID}"
 SCOPES = ["Files.ReadWrite.All", "Sites.Read.All", "User.Read"]
 TEMP_DIR = settings.get("temp_dir", "C:\\Temp_SP")
+CURRENT_LANG = settings.get("language", "da")
+
+# --- TRANSLATIONS ---
+STRINGS = {
+    "da": {
+        "title": "SharePoint Explorer",
+        "btn_back": "← Tilbage",
+        "btn_home": "🏠 Hjem",
+        "btn_save_changes": "💾 Gem ændringer i SharePoint",
+        "btn_login": "Log ind",
+        "btn_logged_in": "Logget ind",
+        "btn_upload_file": "📤 Upload Fil",
+        "btn_upload_folder": "📁 Upload Mappe",
+        "btn_new_folder": "➕ Ny Mappe",
+        "col_name": "Navn",
+        "col_type": "Type",
+        "col_size": "Størrelse",
+        "col_modified": "Sidst ændret",
+        "type_folder": "Mappe",
+        "type_file": "Fil",
+        "type_drive": "Bibliotek",
+        "type_site": "Site",
+        "status_ready": "Klar",
+        "status_logging_in": "Logger ind...",
+        "status_fetching_sites": "Henter sites...",
+        "status_loading": "Indlæser...",
+        "status_loading_content": "Indlæser indhold...",
+        "status_fetching_drives": "Henter biblioteker...",
+        "msg_confirm_delete_single": "Er du sikker på, at du vil slette '{name}' permanent fra SharePoint?",
+        "msg_confirm_delete_multi": "Er du sikker på, at du vil slette {num} markerede emner permanent fra SharePoint?\n\n{names}",
+        "msg_delete_title": "Bekræft sletning",
+        "msg_error": "Fejl",
+        "msg_success": "Succes!",
+        "msg_edit_file": "Rediger fil",
+        "msg_delete": "Slet",
+        "msg_rename": "Omdøb",
+        "msg_rename_prompt": "Indtast det nye navn for '{name}':",
+        "msg_rename_title": "Omdøb emne",
+        "msg_upload_here": "Upload fil her",
+        "msg_upload_folder_here": "Upload mappe her",
+        "msg_new_folder_here": "Opret ny mappe her",
+        "msg_uploading": "Uploader '{name}'...",
+        "msg_creating_folder": "Opretter mappen '{name}'...",
+        "msg_folder_done": "Mappe '{name}' færdig.",
+        "msg_new_folder_prompt": "Indtast navnet på den nye mappe:",
+        "msg_new_folder_title": "Ny Mappe",
+        "msg_drop_info": "Du kan kun uploade filer, når du er inde i et bibliotek eller en mappe.",
+        "msg_drop_title": "Vælg lokation",
+        "msg_select_file": "Vælg fil til upload",
+        "msg_select_folder": "Vælg mappe til upload",
+        "msg_edit_warning": "Du er i gang med at redigere en fil. Luk din editor og gem ændringerne før du lukker programmet.",
+        "msg_login_failed": "Login fejlede.",
+        "msg_upload_success": "'{name}' uploadet succesfuldt.",
+        "msg_upload_failed": "Upload af '{name}' fejlede med kode {code}",
+        "msg_delete_failed": "Kunne ikke slette '{name}'. Stopper...",
+        "msg_deleted_status": "Slettet {count} af {total} emner."
+    },
+    "en": {
+        "title": "SharePoint Explorer",
+        "btn_back": "← Back",
+        "btn_home": "🏠 Home",
+        "btn_save_changes": "💾 Save changes to SharePoint",
+        "btn_login": "Login",
+        "btn_logged_in": "Logged in",
+        "btn_upload_file": "📤 Upload File",
+        "btn_upload_folder": "📁 Upload Folder",
+        "btn_new_folder": "➕ New Folder",
+        "col_name": "Name",
+        "col_type": "Type",
+        "col_size": "Size",
+        "col_modified": "Last Modified",
+        "type_folder": "Folder",
+        "type_file": "File",
+        "type_drive": "Library",
+        "type_site": "Site",
+        "status_ready": "Ready",
+        "status_logging_in": "Logging in...",
+        "status_fetching_sites": "Fetching sites...",
+        "status_loading": "Loading...",
+        "status_loading_content": "Loading content...",
+        "status_fetching_drives": "Fetching libraries...",
+        "msg_confirm_delete_single": "Are you sure you want to permanently delete '{name}' from SharePoint?",
+        "msg_confirm_delete_multi": "Are you sure you want to permanently delete {num} selected items from SharePoint?\n\n{names}",
+        "msg_delete_title": "Confirm Delete",
+        "msg_error": "Error",
+        "msg_success": "Success!",
+        "msg_edit_file": "Edit file",
+        "msg_delete": "Delete",
+        "msg_rename": "Rename",
+        "msg_rename_prompt": "Enter new name for '{name}':",
+        "msg_rename_title": "Rename item",
+        "msg_upload_here": "Upload file here",
+        "msg_upload_folder_here": "Upload folder here",
+        "msg_new_folder_here": "Create new folder here",
+        "msg_uploading": "Uploading '{name}'...",
+        "msg_creating_folder": "Creating folder '{name}'...",
+        "msg_folder_done": "Folder '{name}' finished.",
+        "msg_new_folder_prompt": "Enter the name of the new folder:",
+        "msg_new_folder_title": "New Folder",
+        "msg_drop_info": "You can only upload files when you are inside a library or a folder.",
+        "msg_drop_title": "Select Location",
+        "msg_select_file": "Select file to upload",
+        "msg_select_folder": "Select folder to upload",
+        "msg_edit_warning": "An editing task is active. Please close your editor and save changes before closing the app.",
+        "msg_login_failed": "Login failed.",
+        "msg_upload_success": "'{name}' uploaded successfully.",
+        "msg_upload_failed": "Upload of '{name}' failed with status {code}",
+        "msg_delete_failed": "Could not delete '{name}'. Stopping...",
+        "msg_deleted_status": "Deleted {count} of {total} items."
+    }
+}
 
 if not os.path.exists(TEMP_DIR):
     os.makedirs(TEMP_DIR)
 
+class UploadDropTarget(wx.FileDropTarget):
+    def __init__(self, window, app):
+        wx.FileDropTarget.__init__(self)
+        self.window = window
+        self.app = app
+
+    def OnDropFiles(self, x, y, filenames):
+        if not self.app.current_drive_id:
+            wx.MessageBox(self.app.get_txt("msg_drop_info"), 
+                          self.app.get_txt("msg_drop_title"), wx.OK | wx.ICON_INFORMATION)
+            return False
+            
+        for path in filenames:
+            if os.path.isfile(path):
+                threading.Thread(target=self.app._upload_file_bg, 
+                                 args=(path, self.app.current_drive_id, self.app.current_folder_id), 
+                                 daemon=True).start()
+            elif os.path.isdir(path):
+                threading.Thread(target=self.app._upload_folder_bg, 
+                                 args=(path, self.app.current_drive_id, self.app.current_folder_id), 
+                                 daemon=True).start()
+        return True
+
+def get_file_hash(path):
+    if not os.path.exists(path):
+        return None
+    sha256_hash = hashlib.sha256()
+    with open(path, "rb") as f:
+        for byte_block in iter(lambda: f.read(4096), b""):
+            sha256_hash.update(byte_block)
+    return sha256_hash.hexdigest()
+
 def format_size(bytes_num):
     if bytes_num is None:
         return ""
@@ -60,7 +208,8 @@ def format_size(bytes_num):
 
 class SharePointApp(wx.Frame):
     def __init__(self):
-        super().__init__(None, title="SharePoint Explorer", size=(1000, 750))
+        self.lang = CURRENT_LANG
+        super().__init__(None, title=self.get_txt("title"), size=(1000, 750))
         
         # State
         self.access_token = None
@@ -91,6 +240,15 @@ class SharePointApp(wx.Frame):
         self.Show()
         self.Bind(wx.EVT_CLOSE, self.on_close_window)
 
+    def get_txt(self, key, **kwargs):
+        text = STRINGS[self.lang].get(key, key)
+        if kwargs:
+            try:
+                return text.format(**kwargs)
+            except:
+                pass
+        return text
+
     def InitUI(self):
         panel = wx.Panel(self)
         main_sizer = wx.BoxSizer(wx.VERTICAL)
@@ -129,14 +287,36 @@ class SharePointApp(wx.Frame):
         self.done_btn.Bind(wx.EVT_BUTTON, self.on_done_editing_clicked)
         nav_hbox.Add(self.done_btn, 0, wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 10)
         
+        # NYE KNAPPER: Upload og Ny Mappe (Vises kun når man er inde i et drev/mappe)
+        self.upload_btn = wx.Button(nav_panel, label="📤 Upload Fil", size=(120, 30))
+        self.upload_btn.Hide()
+        self.upload_btn.Bind(wx.EVT_BUTTON, self.on_upload_clicked)
+        nav_hbox.Add(self.upload_btn, 0, wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 5)
+        
+        self.upload_folder_btn = wx.Button(nav_panel, label="📁 Upload Mappe", size=(120, 30))
+        self.upload_folder_btn.Hide()
+        self.upload_folder_btn.Bind(wx.EVT_BUTTON, self.on_upload_folder_clicked)
+        nav_hbox.Add(self.upload_folder_btn, 0, wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 5)
+        
+        self.new_folder_btn = wx.Button(nav_panel, label="➕ Ny Mappe", size=(100, 30))
+        self.new_folder_btn.Hide()
+        self.new_folder_btn.Bind(wx.EVT_BUTTON, self.on_new_folder_clicked)
+        nav_hbox.Add(self.new_folder_btn, 0, wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 5)
+        
         nav_hbox.AddStretchSpacer(1)
         
-        self.login_btn = wx.Button(nav_panel, label="Log ind", size=(120, 30))
+        self.login_btn = wx.Button(nav_panel, label=self.get_txt("btn_login"), size=(120, 30))
         self.login_btn.SetBackgroundColour(wx.Colour(40, 167, 69)) # Grøn
         self.login_btn.SetForegroundColour(wx.WHITE)
         self.login_btn.Bind(wx.EVT_BUTTON, self.login)
         nav_hbox.Add(self.login_btn, 0, wx.RIGHT | wx.ALIGN_CENTER_VERTICAL, 10)
         
+        # SPROG VÆLGER
+        self.lang_choice = wx.Choice(nav_panel, choices=["Dansk", "English"])
+        self.lang_choice.SetSelection(0 if self.lang == "da" else 1)
+        self.lang_choice.Bind(wx.EVT_CHOICE, self.on_language_changed)
+        nav_hbox.Add(self.lang_choice, 0, wx.RIGHT | wx.ALIGN_CENTER_VERTICAL, 10)
+        
         nav_panel.SetSizer(nav_hbox)
         vbox.Add(nav_panel, 0, wx.EXPAND | wx.ALL, 5)
 
@@ -168,6 +348,9 @@ class SharePointApp(wx.Frame):
         self.list_ctrl.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.on_item_activated)
         self.list_ctrl.Bind(wx.EVT_CONTEXT_MENU, self.on_right_click)
         
+        # AKTIVER DRAG & DROP
+        self.list_ctrl.SetDropTarget(UploadDropTarget(self.list_ctrl, self))
+
         self.splitter.SplitVertically(self.tree_ctrl, self.list_ctrl, 250)
         self.splitter.SetMinimumPaneSize(100)
         
@@ -181,15 +364,187 @@ class SharePointApp(wx.Frame):
         self.Layout()
 
     def on_right_click(self, event):
-        item_idx = self.list_ctrl.GetFirstSelected()
+        selected_indices = []
-        if item_idx == -1: return
+        idx = self.list_ctrl.GetFirstSelected()
-        item = self.current_items[item_idx]
+        while idx != -1:
-        if item['type'] == "FILE":
+            selected_indices.append(idx)
-            menu = wx.Menu()
+            idx = self.list_ctrl.GetNextSelected(idx)
-            edit_item = menu.Append(wx.ID_ANY, "Rediger fil")
+            
-            self.Bind(wx.EVT_MENU, lambda e: threading.Thread(target=self.process_file, args=(item['id'], item['name']), daemon=True).start(), edit_item)
+        menu = wx.Menu()
+        
+        if selected_indices:
+            # Menu for de valgte emner
+            selected_items = [self.current_items[i] for i in selected_indices]
+            
+            if len(selected_indices) == 1:
+                item = selected_items[0]
+                if item['type'] == "FILE":
+                    edit_item = menu.Append(wx.ID_ANY, self.get_txt("msg_edit_file"))
+                    self.Bind(wx.EVT_MENU, lambda e: threading.Thread(target=self.process_file, args=(item['id'], item['name']), daemon=True).start(), edit_item)
+                
+                if item['type'] in ["FILE", "FOLDER"]:
+                    rename_item = menu.Append(wx.ID_ANY, f"{self.get_txt('msg_rename')} '{item['name']}'")
+                    self.Bind(wx.EVT_MENU, lambda e: self.on_rename_clicked(item), rename_item)
+                    
+                    delete_item = menu.Append(wx.ID_ANY, f"{self.get_txt('msg_delete')} '{item['name']}'")
+                    self.Bind(wx.EVT_MENU, lambda e: self.on_delete_items_clicked(selected_items), delete_item)
+            else:
+                # Flere emner valgt
+                delete_items = menu.Append(wx.ID_ANY, f"{self.get_txt('msg_delete')} {len(selected_indices)} " + ("emner" if self.lang == "da" else "items"))
+                self.Bind(wx.EVT_MENU, lambda e: self.on_delete_items_clicked(selected_items), delete_items)
+        else:
+            # Menu for selve mappen (hvis man trykker på det tomme felt)
+            if self.current_drive_id:
+                upload_item = menu.Append(wx.ID_ANY, self.get_txt("msg_upload_here"))
+                self.Bind(wx.EVT_MENU, self.on_upload_clicked, upload_item)
+                
+                upload_dir_item = menu.Append(wx.ID_ANY, self.get_txt("msg_upload_folder_here"))
+                self.Bind(wx.EVT_MENU, self.on_upload_folder_clicked, upload_dir_item)
+                
+                new_folder_item = menu.Append(wx.ID_ANY, self.get_txt("msg_new_folder_here"))
+                self.Bind(wx.EVT_MENU, self.on_new_folder_clicked, new_folder_item)
+        
+        if menu.GetMenuItemCount() > 0:
             self.PopupMenu(menu)
-            menu.Destroy()
+        menu.Destroy()
+
+    # --- FILHÅNDTERING (Upload, Slet, Ny Mappe) ---
+    def on_delete_items_clicked(self, items):
+        if not items: return
+        
+        names = ", ".join([f"'{i['name']}'" for i in items[:3]])
+        if len(items) > 3:
+            names += f" og {len(items)-3} andre..." if self.lang == "da" else f" and {len(items)-3} others..."
+            
+        msg = self.get_txt("msg_confirm_delete_multi", num=len(items), names=names)
+        res = wx.MessageBox(msg, self.get_txt("msg_delete_title"), wx.YES_NO | wx.ICON_WARNING)
+        if res == wx.YES:
+            threading.Thread(target=self._delete_multiple_bg, args=(items,), daemon=True).start()
+
+    def _delete_multiple_bg(self, items):
+        self.lock_ui(True)
+        count = 0
+        total = len(items)
+        
+        for item in items:
+            status_text = "Sletter" if self.lang == "da" else "Deleting"
+            self.set_status(f"{status_text} {count+1}/{total}: '{item['name']}'...")
+            url = f"https://graph.microsoft.com/v1.0/drives/{item['drive_id']}/items/{item['id']}"
+            res = requests.delete(url, headers=self.headers)
+            if res.status_code in [204, 200]:
+                count += 1
+            else:
+                self.set_status(self.get_txt("msg_delete_failed", name=item['name']))
+                wx.CallAfter(wx.MessageBox, f"Error deleting '{item['name']}': {res.status_code}", self.get_txt("msg_error"), wx.OK | wx.ICON_ERROR)
+                break
+                
+        self._refresh_current_view()
+        self.lock_ui(False)
+        self.set_status(self.get_txt("msg_deleted_status", count=count, total=total))
+
+    def on_upload_clicked(self, event):
+        if not self.current_drive_id: return
+        with wx.FileDialog(self, self.get_txt("msg_select_file"), style=wx.FD_OPEN | wx.FD_FILE_MUST_EXIST) as fd:
+            if fd.ShowModal() == wx.ID_OK:
+                path = fd.GetPath()
+                threading.Thread(target=self._upload_file_bg, args=(path, self.current_drive_id, self.current_folder_id), daemon=True).start()
+
+    def _upload_file_bg(self, local_path, drive_id, parent_id):
+        filename = os.path.basename(local_path)
+        self.set_status(self.get_txt("msg_uploading", name=filename))
+        # Simpel upload (virker op til 4MB)
+        url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/items/{parent_id}:/{filename}:/content"
+        try:
+            with open(local_path, 'rb') as f:
+                res = requests.put(url, headers=self.headers, data=f)
+            if res.status_code in [200, 201]:
+                self.set_status(self.get_txt("msg_upload_success", name=filename))
+                self._refresh_current_view()
+            else:
+                self.set_status(self.get_txt("msg_upload_failed", name=filename, code=res.status_code))
+                wx.CallAfter(wx.MessageBox, self.get_txt("msg_upload_failed", name=filename, code=res.status_code), self.get_txt("msg_error"), wx.OK | wx.ICON_ERROR)
+        except Exception as e:
+            self.set_status(f"Upload error: {e}")
+
+    def on_upload_folder_clicked(self, event):
+        if not self.current_drive_id: return
+        with wx.DirDialog(self, self.get_txt("msg_select_folder"), style=wx.DD_DEFAULT_STYLE | wx.DD_DIR_MUST_EXIST) as dd:
+            if dd.ShowModal() == wx.ID_OK:
+                path = dd.GetPath()
+                threading.Thread(target=self._upload_folder_bg, args=(path, self.current_drive_id, self.current_folder_id), daemon=True).start()
+
+    def _upload_folder_bg(self, local_dir, drive_id, parent_id):
+        dirname = os.path.basename(local_dir)
+        self.set_status(self.get_txt("msg_creating_folder", name=dirname))
+        
+        # 1. Opret mappen på SharePoint
+        folder_id = self._create_folder_sync(dirname, drive_id, parent_id)
+        if not folder_id:
+            return
+
+        # 2. Upload filer i mappen
+        for item in os.listdir(local_dir):
+            full_path = os.path.join(local_dir, item)
+            if os.path.isfile(full_path):
+                self._upload_file_bg_sync(full_path, drive_id, folder_id)
+            elif os.path.isdir(full_path):
+                self._upload_folder_bg(full_path, drive_id, folder_id) # Rekursivt
+
+        self.set_status(self.get_txt("msg_folder_done", name=dirname))
+        self._refresh_current_view()
+
+    def _create_folder_sync(self, name, drive_id, parent_id):
+        url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/items/{parent_id}/children"
+        body = {"name": name, "folder": {}, "@microsoft.graph.conflictBehavior": "rename"}
+        res = requests.post(url, headers=self.headers, json=body)
+        if res.status_code in [200, 201]:
+            return res.json().get('id')
+        return None
+
+    def _upload_file_bg_sync(self, local_path, drive_id, parent_id):
+        # Hjælper til sync upload brugt af mappe-upload
+        filename = os.path.basename(local_path)
+        url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/items/{parent_id}:/{filename}:/content"
+        with open(local_path, 'rb') as f:
+            requests.put(url, headers=self.headers, data=f)
+
+    def on_new_folder_clicked(self, event):
+        if not self.current_drive_id: return
+        dlg = wx.TextEntryDialog(self, self.get_txt("msg_new_folder_prompt"), self.get_txt("msg_new_folder_title"))
+        if dlg.ShowModal() == wx.ID_OK:
+            name = dlg.GetValue()
+            if name:
+                threading.Thread(target=self._create_folder_bg, args=(name, self.current_drive_id, self.current_folder_id), daemon=True).start()
+        dlg.Destroy()
+
+    def _create_folder_bg(self, name, drive_id, parent_id):
+        self.set_status(self.get_txt("msg_creating_folder", name=name))
+        folder_id = self._create_folder_sync(name, drive_id, parent_id)
+        if folder_id:
+            self.set_status(self.get_txt("msg_success"))
+            self._refresh_current_view()
+        else:
+            self.set_status(self.get_txt("msg_error"))
+
+    def on_rename_clicked(self, item):
+        dlg = wx.TextEntryDialog(self, self.get_txt("msg_rename_prompt", name=item['name']), self.get_txt("msg_rename_title"), item['name'])
+        if dlg.ShowModal() == wx.ID_OK:
+            new_name = dlg.GetValue()
+            if new_name and new_name != item['name']:
+                threading.Thread(target=self._rename_item_bg, args=(item, new_name), daemon=True).start()
+        dlg.Destroy()
+
+    def _rename_item_bg(self, item, new_name):
+        self.set_status(f"{self.get_txt('msg_rename')}...")
+        url = f"https://graph.microsoft.com/v1.0/drives/{item['drive_id']}/items/{item['id']}"
+        body = {"name": new_name}
+        res = requests.patch(url, headers=self.headers, json=body)
+        if res.status_code in [200, 201]:
+            self.set_status(self.get_txt("msg_success"))
+            self._refresh_current_view()
+        else:
+            self.set_status(self.get_txt("msg_error"))
+            wx.CallAfter(wx.MessageBox, f"Rename failed: {res.status_code}", self.get_txt("msg_error"), wx.OK | wx.ICON_ERROR)
 
     def set_status(self, text):
         wx.CallAfter(self.status_bar.SetStatusText, text)
@@ -210,9 +565,48 @@ class SharePointApp(wx.Frame):
         self.edit_wait_event.set()
         self.info_bar.Dismiss()
 
+    def on_language_changed(self, event):
+        selection = self.lang_choice.GetSelection()
+        self.lang = "da" if selection == 0 else "en"
+        
+        # Gem til settings
+        settings["language"] = self.lang
+        save_settings(settings)
+        
+        # Opdater UI tekster med det samme
+        self.SetTitle(self.get_txt("title"))
+        self.back_btn.SetLabel(self.get_txt("btn_back"))
+        self.home_btn.SetLabel(self.get_txt("btn_home"))
+        self.done_btn.SetLabel(self.get_txt("btn_save_changes"))
+        self.upload_btn.SetLabel(self.get_txt("btn_upload_file"))
+        self.upload_folder_btn.SetLabel(self.get_txt("btn_upload_folder"))
+        self.new_folder_btn.SetLabel(self.get_txt("btn_new_folder"))
+        
+        if self.access_token:
+            self.login_btn.SetLabel(self.get_txt("btn_logged_in"))
+        else:
+            self.login_btn.SetLabel(self.get_txt("btn_login"))
+            
+        # Opdater kolonner i ListCtrl
+        self.list_ctrl.SetColumnWidth(0, 450) # Refresh widths
+        item = self.list_ctrl.GetColumn(0)
+        self.list_ctrl.SetColumn(0, wx.ListItem()) # Reset column header logic could be complex in wx, 
+                                                  # but the simplest is to just re-insert columns or set text
+        
+        # Re-set headers (Fix: explicitly set image to -1 to avoid icons in headers)
+        cols = [self.get_txt("col_name"), self.get_txt("col_type"), self.get_txt("col_size"), self.get_txt("col_modified")]
+        for i, text in enumerate(cols):
+            info = self.list_ctrl.GetColumn(i)
+            info.SetText(text)
+            info.SetImage(-1)
+            self.list_ctrl.SetColumn(i, info)
+            
+        self.set_status(self.get_txt("status_ready"))
+        self._refresh_current_view() # Gendanner list-item tekster (Mappe/Fil)
+
     def on_close_window(self, event):
         if self.is_editing:
-            self.show_info("Du er i gang med at redigere en fil. Luk din editor og gem ændringerne før du lukker programmet.", wx.ICON_WARNING, auto_hide=False)
+            self.show_info(self.get_txt("msg_edit_warning"), wx.ICON_WARNING, auto_hide=False)
             return
         event.Skip()
 
@@ -284,7 +678,7 @@ class SharePointApp(wx.Frame):
         self.path_sizer.Add(btn, 0, wx.ALIGN_CENTER_VERTICAL | wx.ALL, 2)
 
     def login(self, event):
-        self.set_status("Logger ind...")
+        self.set_status(self.get_txt("status_logging_in"))
         app = msal.PublicClientApplication(CLIENT_ID, authority=AUTHORITY)
         accounts = app.get_accounts()
         result = None
@@ -297,16 +691,16 @@ class SharePointApp(wx.Frame):
             self.access_token = result["access_token"]
             self.headers = {'Authorization': f'Bearer {self.access_token}'}
             self.login_btn.Disable()
-            self.login_btn.SetLabel("Logget ind")
+            self.login_btn.SetLabel(self.get_txt("btn_logged_in"))
             self.login_btn.SetBackgroundColour(wx.Colour(200, 200, 200)) # Grå
             self.home_btn.Enable()
             self.load_sites()
         else:
-            self.set_status("Login fejlede.")
+            self.set_status(self.get_txt("status_login_failed"))
-            wx.MessageBox(result.get("error_description", "Unknown error"), "Login Error", wx.OK | wx.ICON_ERROR)
+            wx.MessageBox(result.get("error_description", "Unknown error"), self.get_txt("msg_error"), wx.OK | wx.ICON_ERROR)
 
     def load_sites(self, event=None):
-        self.set_status("Henter sites...")
+        self.set_status(self.get_txt("status_fetching_sites"))
         self.tree_ctrl.DeleteAllItems()
         self.list_ctrl.DeleteAllItems()
         self.current_items = []
@@ -331,7 +725,7 @@ class SharePointApp(wx.Frame):
             self.set_status("Kunne ikke hente sites.")
 
     def _populate_sites_tree(self, sites):
-        self.set_status(f"Fandt {len(sites)} sites.")
+        self.set_status(f"{len(sites)} sites.")
         for site in sites:
             name = site.get('displayName', site.get('name'))
             node = self.tree_ctrl.AppendItem(self.tree_root, name, image=self.idx_site)
@@ -347,7 +741,7 @@ class SharePointApp(wx.Frame):
         for i, site in enumerate(sites):
             name = site.get('displayName', site.get('name'))
             self.list_ctrl.InsertItem(i, name, self.idx_site)
-            self.list_ctrl.SetItem(i, 1, "Site")
+            self.list_ctrl.SetItem(i, 1, self.get_txt("type_site"))
             self.list_ctrl.SetItem(i, 2, "") # Størrelse
             self.list_ctrl.SetItem(i, 3, "") # Sidst ændret
             self.current_items.append({"type": "SITE", "id": site['id'], "name": name, "size": None, "modified": ""})
@@ -358,7 +752,7 @@ class SharePointApp(wx.Frame):
         if not data or data.get("loaded"):
             return
             
-        loading_node = self.tree_ctrl.AppendItem(item, "Indlæser...")
+        loading_node = self.tree_ctrl.AppendItem(item, self.get_txt("status_loading"))
         threading.Thread(target=self._fetch_tree_children_bg, args=(item, data), daemon=True).start()
 
     def _fetch_tree_children_bg(self, parent_node, data):
@@ -429,25 +823,30 @@ class SharePointApp(wx.Frame):
             self.tree_ctrl.SelectItem(target_node)
 
     def on_tree_selected(self, event):
-        if self.is_editing: return
+        if not self or self.is_editing: return
         item = event.GetItem()
         data = self.tree_item_data.get(item)
         if not data:
             return
             
-        self.current_path = data["path"]
+        try:
-        if self:
+            self.current_path = data["path"]
             self.update_path_display()
             
-        if not self.is_navigating_back:
+            if not self.is_navigating_back:
-            self.history.append(item)
+                self.history.append(item)
-        self.back_btn.Enable(len(self.history) > 1)
             
-        self.list_ctrl.DeleteAllItems()
+            # Check if button still exists
-        self.current_items = []
+            if self.back_btn:
-        self.set_status("Indlæser indhold...")
+                self.back_btn.Enable(len(self.history) > 1)
             
-        threading.Thread(target=self._fetch_list_contents_bg, args=(data,), daemon=True).start()
+            self.list_ctrl.DeleteAllItems()
+            self.current_items = []
+            self.set_status(self.get_txt("status_loading_content"))
+            
+            threading.Thread(target=self._fetch_list_contents_bg, args=(data,), daemon=True).start()
+        except RuntimeError:
+            pass
 
     def _fetch_list_contents_bg(self, data):
         items_data = []
@@ -486,32 +885,50 @@ class SharePointApp(wx.Frame):
         wx.CallAfter(self._populate_list_ctrl, items_data, data)
 
     def _populate_list_ctrl(self, items_data, parent_data):
-        self.list_ctrl.DeleteAllItems()
+        if not self: return
-        self.current_items = []
+        try:
-        for i, item in enumerate(items_data):
+            self.list_ctrl.DeleteAllItems()
-            img_idx = self.idx_file
+            self.current_items = []
-            if item['type'] == "FOLDER": img_idx = self.idx_folder
+            for i, item in enumerate(items_data):
-            elif item['type'] == "DRIVE": img_idx = self.idx_drive
+                img_idx = self.idx_file
-            elif item['type'] == "SITE": img_idx = self.idx_site
+                if item['type'] == "FOLDER": img_idx = self.idx_folder
+                elif item['type'] == "DRIVE": img_idx = self.idx_drive
+                elif item['type'] == "SITE": img_idx = self.idx_site
                 
-            self.list_ctrl.InsertItem(i, item['name'], img_idx)
+                self.list_ctrl.InsertItem(i, item['name'], img_idx)
-            type_str = "Mappe" if item['type'] == "FOLDER" else "Fil" if item['type'] == "FILE" else "Bibliotek"
+                type_str = self.get_txt("type_folder") if item['type'] == "FOLDER" else self.get_txt("type_file") if item['type'] == "FILE" else self.get_txt("type_drive")
-            self.list_ctrl.SetItem(i, 1, type_str)
+                self.list_ctrl.SetItem(i, 1, type_str)
-            size_str = format_size(item['size']) if item['size'] is not None else ""
+                size_str = format_size(item['size']) if item['size'] is not None else ""
-            self.list_ctrl.SetItem(i, 2, size_str)
+                self.list_ctrl.SetItem(i, 2, size_str)
-            self.list_ctrl.SetItem(i, 3, item['modified'])
+                self.list_ctrl.SetItem(i, 3, item['modified'])
-            self.current_items.append(item)
+                self.current_items.append(item)
                 
-        self.set_status("Klar")
+            self.set_status(self.get_txt("status_ready"))
             
-        if parent_data['type'] == "SITE":
+            if parent_data['type'] == "SITE":
-            self.current_site_id = parent_data['id']
+                self.current_site_id = parent_data['id']
-        elif parent_data['type'] == "DRIVE":
+            elif parent_data['type'] == "DRIVE":
-            self.current_drive_id = parent_data['id']
+                self.current_drive_id = parent_data['id']
-            self.current_folder_id = "root"
+                self.current_folder_id = "root"
-        elif parent_data['type'] == "FOLDER":
+            elif parent_data['type'] == "FOLDER":
-            self.current_drive_id = parent_data['drive_id']
+                self.current_drive_id = parent_data['drive_id']
-            self.current_folder_id = parent_data['id']
+                self.current_folder_id = parent_data['id']
+                
+            # Opdater knap-synlighed
+            can_upload = self.current_drive_id is not None
+            wx.CallAfter(lambda: self._safe_update_buttons(can_upload))
+        except RuntimeError:
+            pass
+
+    def _safe_update_buttons(self, can_upload):
+        try:
+            if not self: return
+            self.upload_btn.Show(can_upload)
+            self.upload_folder_btn.Show(can_upload)
+            self.new_folder_btn.Show(can_upload)
+            self.Layout()
+        except RuntimeError:
+            pass
 
     def on_item_activated(self, event):
         if self.is_editing: return
@@ -579,6 +996,9 @@ class SharePointApp(wx.Frame):
             with open(local_path, 'wb') as f:
                 f.write(res.content)
             
+            # Beregn udgangspunkt hash
+            original_hash = get_file_hash(local_path)
+            
             # Checkout
             requests.post(f"{base_url}/checkout", headers=self.headers)
 
@@ -614,16 +1034,21 @@ class SharePointApp(wx.Frame):
                 wx.CallAfter(self.done_btn.Hide)
                 wx.CallAfter(self.Layout)
 
-            # 4. Upload
+            # 4. Tjek om noget er ændret
-            self.set_status(f"Uploader ændringer...")
+            new_hash = get_file_hash(local_path)
-            with open(local_path, 'rb') as f:
+            if original_hash == new_hash:
-                upload_res = requests.put(f"{base_url}/content", headers=self.headers, data=f)
+                self.set_status("Ingen ændringer fundet. Springer upload over.")
-                if upload_res.status_code not in [200, 201]:
+            else:
-                    raise Exception(f"Upload fejlede: {upload_res.status_code}")
+                # 5. Upload (kun hvis ændret)
+                self.set_status(f"Uploader ændringer...")
+                with open(local_path, 'rb') as f:
+                    upload_res = requests.put(f"{base_url}/content", headers=self.headers, data=f)
+                    if upload_res.status_code not in [200, 201]:
+                        raise Exception(f"Upload fejlede: {upload_res.status_code}")
             
-            # 5. Checkin
+            # 6. Checkin (Uanset om ændret eller ej, for at frigive lås)
             self.set_status(f"Tjekker '{file_name}' ind...")
-            requests.post(f"{base_url}/checkin", headers=self.headers, json={"comment": "Opdateret via SP Explorer"})
+            requests.post(f"{base_url}/checkin", headers=self.headers, json={"comment": "SP Explorer Edit"})
 
             # Oprydning: Slet fil og derefter mappe
             try: