refactor: replace customtkinter with wxPython and implement tree-based navigation

GEMINI.md

@@ -18,7 +18,7 @@ A modern Python-based file browser for Microsoft SharePoint, specifically design
 ## Tech Stack
 
 - **Language:** Python 3.x
-- **GUI Framework:** [CustomTkinter](https://github.com/TomSchimansky/CustomTkinter) (Modern, responsive UI)
+- **GUI Framework:** [wxPython](https://www.wxpython.org/) (Native Windows UI)
 - **Authentication:** [MSAL (Microsoft Authentication Library)](https://github.com/AzureAD/microsoft-authentication-library-for-python)
 - **API Interaction:** Microsoft Graph API via `requests`
 - **File Monitoring:** Local file lock polling
@@ -30,7 +30,7 @@ A modern Python-based file browser for Microsoft SharePoint, specifically design
 Ensure you have Python installed. You will also need to install the following dependencies:
 
 ```bash
-pip install customtkinter msal requests
+pip install wxPython msal requests
 ```
 
 ### Running the Application

sharepoint_browser.py

@@ -6,9 +6,8 @@ import json
 import sys
 import requests
 import msal
-import customtkinter as ctk
-import tkinter as tk
-from tkinter import messagebox
+import wx
+import wx.lib.newevent
 
 # --- STIHÅNDTERING (Til EXE-brug) ---
 if getattr(sys, 'frozen', False):
@@ -32,7 +31,10 @@ def load_settings():
         return default_settings
     
     with open(SETTINGS_FILE, 'r') as f:
-        return json.load(f)
+        try:
+            return json.load(f)
+        except:
+            return default_settings
 
 settings = load_settings()
 CLIENT_ID = settings.get("client_id")
@@ -44,65 +46,118 @@ TEMP_DIR = settings.get("temp_dir", "C:\\Temp_SP")
 if not os.path.exists(TEMP_DIR):
     os.makedirs(TEMP_DIR)
 
-ctk.set_appearance_mode("System")
-ctk.set_default_color_theme("blue")
-
-class SharePointApp(ctk.CTk):
+class SharePointApp(wx.Frame):
     def __init__(self):
-        super().__init__()
-        self.title("SharePoint Explorer")
-        self.geometry("1000x750")
+        super().__init__(None, title="SharePoint Explorer", size=(1000, 750))
         
+        # State
         self.access_token = None
         self.headers = {}
-        
-        # Navigation State
         self.history = [] # Stack af (mode, id, path_segment)
         self.current_path = ["SharePoint"]
         self.current_site_id = None
         self.current_drive_id = None
         self.current_folder_id = "root"
+        self.current_items = [] # Gemmer graf-objekterne for rækkerne
+        self.tree_item_data = {} # Mappenoder -> {type, id, name, drive_id, path}
+        self.tree_root = None
+        self.is_navigating_back = False
 
-        # UI Layout - 3 Rækker: Top (Nav), Midt (Filer), Bund (Info)
-        self.grid_rowconfigure(1, weight=1)
-        self.grid_columnconfigure(0, weight=1)
+        self.InitUI()
+        self.Centre()
+        self.Show()
+
+    def InitUI(self):
+        panel = wx.Panel(self)
+        main_sizer = wx.BoxSizer(wx.VERTICAL)
+        self.SetSizer(main_sizer)
+        main_sizer.Add(panel, 1, wx.EXPAND)
+
+        vbox = wx.BoxSizer(wx.VERTICAL)
 
         # 1. TOP NAVIGATION BAR
-        self.nav_frame = ctk.CTkFrame(self, height=60, corner_radius=0)
-        self.nav_frame.grid(row=0, column=0, sticky="ew", padx=0, pady=0)
+        nav_panel = wx.Panel(panel)
+        nav_hbox = wx.BoxSizer(wx.HORIZONTAL)
         
-        self.back_btn = ctk.CTkButton(self.nav_frame, text="← Tilbage", width=100, command=self.go_back, state="disabled")
-        self.back_btn.pack(side="left", padx=10, pady=10)
+        self.back_btn = wx.Button(nav_panel, label="← Tilbage", size=(100, 30))
+        self.back_btn.Disable()
+        self.back_btn.Bind(wx.EVT_BUTTON, self.go_back)
+        nav_hbox.Add(self.back_btn, 0, wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 10)
         
-        self.home_btn = ctk.CTkButton(self.nav_frame, text="🏠 Hjem", width=100, command=self.load_sites, state="disabled")
-        self.home_btn.pack(side="left", padx=5, pady=10)
+        self.home_btn = wx.Button(nav_panel, label="🏠 Hjem", size=(100, 30))
+        self.home_btn.Disable()
+        self.home_btn.Bind(wx.EVT_BUTTON, self.load_sites)
+        nav_hbox.Add(self.home_btn, 0, wx.LEFT | wx.ALIGN_CENTER_VERTICAL, 5)
         
-        self.login_btn = ctk.CTkButton(self.nav_frame, text="Log ind", width=120, fg_color="#28a745", hover_color="#218838", command=self.login)
-        self.login_btn.pack(side="right", padx=10, pady=10)
+        nav_hbox.AddStretchSpacer(1)
+        
+        self.login_btn = wx.Button(nav_panel, label="Log ind", 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)
+        
+        nav_panel.SetSizer(nav_hbox)
+        vbox.Add(nav_panel, 0, wx.EXPAND | wx.ALL, 5)
 
-        # 2. MAIN CONTENT (File Area)
-        self.main_frame = ctk.CTkScrollableFrame(self, fg_color=("gray95", "gray10"), corner_radius=0)
-        self.main_frame.grid(row=1, column=0, sticky="nsew", padx=0, pady=0)
+        # 2. PATH LABEL
+        self.path_label = wx.StaticText(panel, label="📍 SharePoint")
+        self.path_label.SetFont(wx.Font(10, wx.FONTFAMILY_DEFAULT, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_BOLD))
+        vbox.Add(self.path_label, 0, wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM, 10)
 
-        # 3. FOOTER (Path & Status)
-        self.footer_frame = ctk.CTkFrame(self, height=40, corner_radius=0)
-        self.footer_frame.grid(row=2, column=0, sticky="ew")
+        # 3. SPLITTER FOR TREE AND LIST
+        self.splitter = wx.SplitterWindow(panel, style=wx.SP_LIVE_UPDATE | wx.SP_3DSASH)
         
-        self.path_label = ctk.CTkLabel(self.footer_frame, text="Sti: /", font=ctk.CTkFont(size=12, weight="bold"))
-        self.path_label.pack(side="left", padx=15, pady=5)
+        # Left side: Tree
+        self.tree_ctrl = wx.TreeCtrl(self.splitter, style=wx.TR_DEFAULT_STYLE | wx.TR_HIDE_ROOT | wx.BORDER_SUNKEN)
+        self.tree_ctrl.Bind(wx.EVT_TREE_ITEM_EXPANDING, self.on_tree_expanding)
+        self.tree_ctrl.Bind(wx.EVT_TREE_SEL_CHANGED, self.on_tree_selected)
+
+        # Right side: File Area - ListCtrl
+        self.list_ctrl = wx.ListCtrl(self.splitter, style=wx.LC_REPORT | wx.BORDER_SUNKEN)
+        self.list_ctrl.InsertColumn(0, "Navn", width=450)
+        self.list_ctrl.InsertColumn(1, "Type", width=150)
+        self.list_ctrl.InsertColumn(2, "Sidst ændret", width=200)
         
-        self.status_label = ctk.CTkLabel(self.footer_frame, text="Klar", text_color="gray")
-        self.status_label.pack(side="right", padx=15, pady=5)
+        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)
+
+        self.splitter.SplitVertically(self.tree_ctrl, self.list_ctrl, 250)
+        self.splitter.SetMinimumPaneSize(100)
+        
+        vbox.Add(self.splitter, 1, wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM, 10)
+
+        # 4. STATUS BAR
+        self.status_bar = self.CreateStatusBar()
+        self.status_bar.SetStatusText("Klar")
+
+        panel.SetSizer(vbox)
+        self.Layout()
+
+    def on_right_click(self, event):
+        item_idx = self.list_ctrl.GetFirstSelected()
+        if item_idx == -1: return
+        item = self.current_items[item_idx]
+        if item['type'] == "FILE":
+            menu = wx.Menu()
+            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)
+            self.PopupMenu(menu)
+            menu.Destroy()
 
     def set_status(self, text):
-        self.status_label.configure(text=text)
-        self.update_idletasks()
+        wx.CallAfter(self.status_bar.SetStatusText, text)
+
+    def clear_main(self):
+        self.list_ctrl.DeleteAllItems()
+        self.current_items = []
+        self.update_path_display()
 
     def update_path_display(self):
         path_str = " > ".join(self.current_path)
-        self.path_label.configure(text=f"📍 {path_str}")
+        wx.CallAfter(self.path_label.SetLabel, f"📍 {path_str}")
 
-    def login(self):
+    def login(self, event):
         self.set_status("Logger ind...")
         app = msal.PublicClientApplication(CLIENT_ID, authority=AUTHORITY)
         accounts = app.get_accounts()
@@ -115,130 +170,245 @@ class SharePointApp(ctk.CTk):
         if "access_token" in result:
             self.access_token = result["access_token"]
             self.headers = {'Authorization': f'Bearer {self.access_token}'}
-            self.login_btn.configure(state="disabled", text="Logget ind", fg_color="gray")
-            self.home_btn.configure(state="normal")
+            self.login_btn.Disable()
+            self.login_btn.SetLabel("Logget ind")
+            self.login_btn.SetBackgroundColour(wx.Colour(200, 200, 200)) # Grå
+            self.home_btn.Enable()
             self.load_sites()
         else:
             self.set_status("Login fejlede.")
-            messagebox.showerror("Login Error", result.get("error_description", "Unknown error"))
+            wx.MessageBox(result.get("error_description", "Unknown error"), "Login Error", wx.OK | wx.ICON_ERROR)
 
-    def clear_main(self):
-        for widget in self.main_frame.winfo_children():
-            widget.destroy()
-        self.back_btn.configure(state="normal" if self.history else "disabled")
-        self.update_path_display()
-
-    def create_explorer_item(self, text, icon, command, is_file=False):
-        # En knap der ligner et række-element i Windows Explorer
-        frame = ctk.CTkFrame(self.main_frame, fg_color="transparent")
-        frame.pack(fill="x", padx=10, pady=1)
-        
-        btn = ctk.CTkButton(
-            frame, 
-            text=f"  {icon}  {text}", 
-            anchor="w", 
-            height=35,
-            fg_color="transparent", 
-            text_color=("gray10", "gray90"),
-            hover_color=("gray80", "gray25"),
-            font=ctk.CTkFont(size=13),
-            command=command
-        )
-        btn.pack(fill="x")
-        return btn
-
-    def load_sites(self):
+    def load_sites(self, event=None):
         self.set_status("Henter sites...")
-        self.clear_main()
+        self.tree_ctrl.DeleteAllItems()
+        self.list_ctrl.DeleteAllItems()
+        self.current_items = []
+        self.tree_item_data = {}
+        self._pending_tree_selection_id = None
+        
+        self.tree_root = self.tree_ctrl.AddRoot("HiddenRoot")
         self.current_path = ["SharePoint"]
         self.history = []
         self.update_path_display()
         
+        threading.Thread(target=self._fetch_sites_bg, daemon=True).start()
+
+    def _fetch_sites_bg(self):
         url = "https://graph.microsoft.com/v1.0/sites?search=*"
         res = requests.get(url, headers=self.headers)
         if res.status_code == 200:
             sites = res.json().get('value', [])
-            # Sorter sites alfabetisk
             sites.sort(key=lambda x: x.get('displayName', x.get('name', '')).lower())
-            for site in sites:
-                name = site.get('displayName', site.get('name'))
-                self.create_explorer_item(name, "🌐", lambda s=site['id'], n=name: self.select_site(s, n))
-            self.set_status(f"Fandt {len(sites)} sites.")
+            wx.CallAfter(self._populate_sites_tree, sites)
         else:
             self.set_status("Kunne ikke hente sites.")
 
-    def select_site(self, site_id, name):
-        self.history.append(("SITES", None, "SharePoint"))
-        self.current_site_id = site_id
-        self.current_path.append(name)
-        self.load_drives(site_id)
-
-    def load_drives(self, site_id):
-        self.set_status("Henter dokumentbiblioteker...")
-        self.clear_main()
-        url = f"https://graph.microsoft.com/v1.0/sites/{site_id}/drives"
-        res = requests.get(url, headers=self.headers)
-        if res.status_code == 200:
-            drives = res.json().get('value', [])
-            # Sorter biblioteker alfabetisk
-            drives.sort(key=lambda x: x.get('name', '').lower())
-            for drive in drives:
-                name = drive.get('name')
-                self.create_explorer_item(name, "📚", lambda d=drive['id'], n=name: self.select_drive(d, n))
-            self.set_status("Vælg et bibliotek.")
-        else:
-            self.set_status("Fejl ved hentning af biblioteker.")
-
-    def select_drive(self, drive_id, name):
-        self.history.append(("DRIVES", self.current_site_id, self.current_path[-1]))
-        self.current_drive_id = drive_id
-        self.current_path.append(name)
-        self.load_folder("root")
-
-    def load_folder(self, folder_id):
-        self.set_status("Indlæser filer...")
-        self.clear_main()
-        
-        url = f"https://graph.microsoft.com/v1.0/drives/{self.current_drive_id}/root/children" if folder_id == "root" else \
-              f"https://graph.microsoft.com/v1.0/drives/{self.current_drive_id}/items/{folder_id}/children"
+    def _populate_sites_tree(self, sites):
+        self.set_status(f"Fandt {len(sites)} sites.")
+        for site in sites:
+            name = site.get('displayName', site.get('name'))
+            node = self.tree_ctrl.AppendItem(self.tree_root, name)
+            self.tree_item_data[node] = {
+                "type": "SITE", "id": site['id'], "name": name, 
+                "drive_id": None, "path": ["SharePoint", name], "loaded": False
+            }
+            self.tree_ctrl.SetItemHasChildren(node, True)
             
-        res = requests.get(url, headers=self.headers)
-        if res.status_code == 200:
-            items = res.json().get('value', [])
-            # Sorter: Mapper først, derefter filer. Begge alfabetisk.
-            items.sort(key=lambda x: (not 'folder' in x, x['name'].lower()))
+        # Select the first site or just show in list (defaulting to showing root sites in list)
+        self.list_ctrl.DeleteAllItems()
+        self.current_items = []
+        for i, site in enumerate(sites):
+            name = site.get('displayName', site.get('name'))
+            self.list_ctrl.InsertItem(i, name)
+            self.list_ctrl.SetItem(i, 1, "Site")
+            self.current_items.append({"type": "SITE", "id": site['id'], "name": name})
+
+    def on_tree_expanding(self, event):
+        item = event.GetItem()
+        data = self.tree_item_data.get(item)
+        if not data or data.get("loaded"):
+            return
             
-            self.current_folder_id = folder_id
-            for item in items:
-                name, item_id, is_folder = item['name'], item['id'], 'folder' in item
-                icon = "📁" if is_folder else "📄"
-                cmd = lambda i=item_id, f=is_folder, n=name: self.item_clicked(i, f, n)
-                self.create_explorer_item(name, icon, cmd, not is_folder)
-            self.set_status("Klar")
-        else:
-            self.set_status(f"Fejl: {res.status_code}")
+        loading_node = self.tree_ctrl.AppendItem(item, "Indlæser...")
+        threading.Thread(target=self._fetch_tree_children_bg, args=(item, data), daemon=True).start()
 
-    def item_clicked(self, item_id, is_folder, name):
-        if is_folder:
-            # Gem det ID vi er i NU, før vi går dybere, så vi kan vende tilbage til det
-            self.history.append(("FOLDERS", self.current_folder_id, self.current_path[-1]))
-            self.current_path.append(name)
-            self.load_folder(item_id)
-        else:
-            threading.Thread(target=self.process_file, args=(item_id, name), daemon=True).start()
+    def _fetch_tree_children_bg(self, parent_node, data):
+        if data['type'] == "SITE":
+            url = f"https://graph.microsoft.com/v1.0/sites/{data['id']}/drives"
+            res = requests.get(url, headers=self.headers)
+            if res.status_code == 200:
+                drives = res.json().get('value', [])
+                drives.sort(key=lambda x: x.get('name', '').lower())
+                wx.CallAfter(self._populate_tree_drives, parent_node, drives, data)
+        elif data['type'] == "DRIVE":
+            url = f"https://graph.microsoft.com/v1.0/drives/{data['id']}/root/children"
+            res = requests.get(url, headers=self.headers)
+            if res.status_code == 200:
+                items = res.json().get('value', [])
+                folders = [x for x in items if 'folder' in x]
+                folders.sort(key=lambda x: x['name'].lower())
+                wx.CallAfter(self._populate_tree_folders, parent_node, folders, data)
+        elif data['type'] == "FOLDER":
+            url = f"https://graph.microsoft.com/v1.0/drives/{data['drive_id']}/items/{data['id']}/children"
+            res = requests.get(url, headers=self.headers)
+            if res.status_code == 200:
+                items = res.json().get('value', [])
+                folders = [x for x in items if 'folder' in x]
+                folders.sort(key=lambda x: x['name'].lower())
+                wx.CallAfter(self._populate_tree_folders, parent_node, folders, data)
 
-    def go_back(self):
-        if not self.history: return
-        mode, prev_id, path_segment = self.history.pop()
-        self.current_path.pop()
+    def _populate_tree_drives(self, parent_node, drives, parent_data):
+        self.tree_ctrl.DeleteChildren(parent_node)
+        parent_data["loaded"] = True
+        target_node = None
         
-        if mode == "SITES":
-            self.load_sites()
-        elif mode == "DRIVES":
-            self.load_drives(prev_id)
-        elif mode == "FOLDERS":
-            # Nu bruger vi det præcise ID vi gemte før (prev_id er folder_id)
-            self.load_folder(prev_id)
+        for drive in drives:
+            name = drive.get('name', 'Ukendt')
+            drive_id = drive['id']
+            node = self.tree_ctrl.AppendItem(parent_node, name)
+            self.tree_item_data[node] = {
+                "type": "DRIVE", "id": drive_id, "name": name, 
+                "drive_id": drive_id, "path": parent_data["path"] + [name], "loaded": False
+            }
+            self.tree_ctrl.SetItemHasChildren(node, True)
+            if drive_id == getattr(self, '_pending_tree_selection_id', None):
+                target_node = node
+                
+        if target_node:
+            self._pending_tree_selection_id = None
+            self.tree_ctrl.SelectItem(target_node)
+
+    def _populate_tree_folders(self, parent_node, folders, parent_data):
+        self.tree_ctrl.DeleteChildren(parent_node)
+        parent_data["loaded"] = True
+        target_node = None
+        
+        for folder in folders:
+            name = folder['name']
+            folder_id = folder['id']
+            node = self.tree_ctrl.AppendItem(parent_node, name)
+            self.tree_item_data[node] = {
+                "type": "FOLDER", "id": folder_id, "name": name, 
+                "drive_id": parent_data["drive_id"], "path": parent_data["path"] + [name], "loaded": False
+            }
+            self.tree_ctrl.SetItemHasChildren(node, True)
+            if folder_id == getattr(self, '_pending_tree_selection_id', None):
+                target_node = node
+                
+        if target_node:
+            self._pending_tree_selection_id = None
+            self.tree_ctrl.SelectItem(target_node)
+
+    def on_tree_selected(self, event):
+        item = event.GetItem()
+        data = self.tree_item_data.get(item)
+        if not data:
+            return
+            
+        self.current_path = data["path"]
+        self.update_path_display()
+        
+        if not self.is_navigating_back:
+            self.history.append(item)
+        self.back_btn.Enable(len(self.history) > 1)
+        
+        self.list_ctrl.DeleteAllItems()
+        self.current_items = []
+        self.set_status("Indlæser indhold...")
+        
+        threading.Thread(target=self._fetch_list_contents_bg, args=(data,), daemon=True).start()
+
+    def _fetch_list_contents_bg(self, data):
+        items_data = []
+        if data['type'] == "SITE":
+            url = f"https://graph.microsoft.com/v1.0/sites/{data['id']}/drives"
+            res = requests.get(url, headers=self.headers)
+            if res.status_code == 200:
+                drives = res.json().get('value', [])
+                drives.sort(key=lambda x: x.get('name', '').lower())
+                for drive in drives:
+                    items_data.append({
+                        "type": "DRIVE", "id": drive['id'], "name": drive.get('name', ''), 
+                        "drive_id": drive['id'], "modified": ""
+                    })
+        elif data['type'] in ["DRIVE", "FOLDER"]:
+            drive_id = data['drive_id']
+            if data['type'] == "DRIVE":
+                url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/root/children"
+            else:
+                url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/items/{data['id']}/children"
+                
+            res = requests.get(url, headers=self.headers)
+            if res.status_code == 200:
+                items = res.json().get('value', [])
+                items.sort(key=lambda x: (not 'folder' in x, x['name'].lower()))
+                for item in items:
+                    is_folder = 'folder' in item
+                    modified = item.get('lastModifiedDateTime', '').replace('T', ' ').split('.')[0]
+                    items_data.append({
+                        "type": "FOLDER" if is_folder else "FILE", 
+                        "id": item['id'], "name": item['name'], 
+                        "drive_id": drive_id, "modified": modified
+                    })
+                    
+        wx.CallAfter(self._populate_list_ctrl, items_data, data)
+
+    def _populate_list_ctrl(self, items_data, parent_data):
+        self.list_ctrl.DeleteAllItems()
+        self.current_items = []
+        for i, item in enumerate(items_data):
+            self.list_ctrl.InsertItem(i, item['name'])
+            type_str = "Mappe" if item['type'] == "FOLDER" else "Fil" if item['type'] == "FILE" else "Bibliotek"
+            self.list_ctrl.SetItem(i, 1, type_str)
+            self.list_ctrl.SetItem(i, 2, item['modified'])
+            self.current_items.append(item)
+            
+        self.set_status("Klar")
+        
+        if parent_data['type'] == "SITE":
+            self.current_site_id = parent_data['id']
+        elif parent_data['type'] == "DRIVE":
+            self.current_drive_id = parent_data['id']
+            self.current_folder_id = "root"
+        elif parent_data['type'] == "FOLDER":
+            self.current_drive_id = parent_data['drive_id']
+            self.current_folder_id = parent_data['id']
+
+    def on_item_activated(self, event):
+        idx = event.GetIndex()
+        item = self.current_items[idx]
+        
+        if item['type'] in ["SITE", "DRIVE", "FOLDER"]:
+            self._sync_tree_selection(item['id'])
+        elif item['type'] == "FILE":
+            self.current_drive_id = item['drive_id']
+            threading.Thread(target=self.process_file, args=(item['id'], item['name']), daemon=True).start()
+
+    def _sync_tree_selection(self, target_id):
+        selected = self.tree_ctrl.GetSelection()
+        if selected.IsOk():
+            data = self.tree_item_data.get(selected)
+            if data and not data.get("loaded"):
+                self._pending_tree_selection_id = target_id
+                self.tree_ctrl.Expand(selected)
+                return
+                
+            child, cookie = self.tree_ctrl.GetFirstChild(selected)
+            while child.IsOk():
+                cdata = self.tree_item_data.get(child)
+                if cdata and cdata['id'] == target_id:
+                    self.tree_ctrl.SelectItem(child)
+                    return
+                child, cookie = self.tree_ctrl.GetNextChild(selected, cookie)
+
+    def go_back(self, event=None):
+        if len(self.history) > 1:
+            self.history.pop() # Remove current
+            prev_item = self.history[-1] # Peak at previous
+            self.is_navigating_back = True
+            self.tree_ctrl.SelectItem(prev_item)
+            self.is_navigating_back = False
 
     def process_file(self, item_id, file_name):
         base_url = f"https://graph.microsoft.com/v1.0/drives/{self.current_drive_id}/items/{item_id}"
@@ -247,8 +417,6 @@ class SharePointApp(ctk.CTk):
             # 1. Checkout
             self.set_status(f"Tjekker '{file_name}' ud...")
             checkout_res = requests.post(f"{base_url}/checkout", headers=self.headers)
-            if checkout_res.status_code not in [200, 204]:
-                print(f"Checkout info: {checkout_res.status_code} - {checkout_res.text}")
             
             # 2. Download
             self.set_status(f"Downloader '{file_name}'...")
@@ -256,7 +424,6 @@ class SharePointApp(ctk.CTk):
             if res.status_code != 200:
                 raise Exception(f"Download fejlede: {res.status_code}")
             
-            # Lav en unik undermappe til filen for at bevare det originale navn uden konflikter
             short_hash = hashlib.md5(item_id.encode()).hexdigest()[:8]
             file_dir = os.path.join(TEMP_DIR, short_hash)
             if not os.path.exists(file_dir):
@@ -268,13 +435,12 @@ class SharePointApp(ctk.CTk):
                 f.write(res.content)
 
             # 3. Åbn & Overvåg
-            self.set_status(f"Åbner '{file_name}'... Vent på programmet starter.")
+            self.set_status(f"Åbner '{file_name}'...")
             os.startfile(local_path)
             
-            # Vent på at programmet rent faktisk låser filen
             locked = False
-            self.set_status(f"Venter på at '{file_name}' åbnes i redigeringsprogram...")
-            for _ in range(10): # Vent op til 10 sekunder på at filen bliver låst
+            self.set_status(f"Venter på '{file_name}'...")
+            for _ in range(10): 
                 time.sleep(1)
                 try:
                     os.rename(local_path, local_path)
@@ -283,42 +449,39 @@ class SharePointApp(ctk.CTk):
                     break
             
             if locked:
-                self.set_status(f"Redigerer '{file_name}' - Luk programmet for at gemme.")
-                # Nu venter vi på at den bliver låst OP igen
+                self.set_status(f"Redigerer '{file_name}' - Luk for at gemme.")
                 while True:
                     time.sleep(2)
                     try:
                         os.rename(local_path, local_path)
-                        break # Filen er ikke længere låst
+                        break 
                     except OSError:
                         pass
             else:
-                self.set_status("Kunne ikke detektere fillås. Tryk OK når du er færdig.")
-                messagebox.showinfo("Info", f"Vi kunne ikke detektere om '{file_name}' blev låst af dit program.\n\nTryk OK når du har gemt og LUKKET filen i dit redigeringsprogram.")
+                self.set_status("Fillås ikke detekteret.")
+                wx.CallAfter(wx.MessageBox, f"Vi kunne ikke detektere om '{file_name}' blev låst.\n\nTryk OK når du har gemt og LUKKET filen.", "Info", wx.OK | wx.ICON_INFORMATION)
 
             # 4. Upload
-            self.set_status(f"Uploader ændringer til SharePoint...")
+            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} - {upload_res.text}")
+                    raise Exception(f"Upload fejlede: {upload_res.status_code}")
             
             # 5. Checkin
             self.set_status(f"Tjekker '{file_name}' ind...")
-            checkin_res = requests.post(f"{base_url}/checkin", headers=self.headers, json={"comment": "Opdateret via SP Explorer"})
-            if checkin_res.status_code not in [200, 204]:
-                print(f"Checkin info: {checkin_res.status_code} - {checkin_res.text}")
+            requests.post(f"{base_url}/checkin", headers=self.headers, json={"comment": "Opdateret via SP Explorer"})
 
             os.remove(local_path)
-            self.set_status(f"Succes! '{file_name}' er opdateret på SharePoint.")
-            messagebox.showinfo("Færdig", f"Filen '{file_name}' er gemt og tjekket ind korrekt.")
+            self.set_status(f"Succes! '{file_name}' er opdateret.")
+            wx.CallAfter(wx.MessageBox, f"Filen '{file_name}' er gemt og tjekket ind korrekt.", "Færdig", wx.OK | wx.ICON_INFORMATION)
             
         except Exception as e:
             self.set_status(f"Fejl: {str(e)}")
-            print(f"DETALJERET FEJL: {e}")
-            messagebox.showerror("Fejl", f"Der skete en fejl:\n{e}")
+            wx.CallAfter(wx.MessageBox, f"Der skete en fejl:\n{e}", "Fejl", wx.OK | wx.ICON_ERROR)
 
 
 if __name__ == "__main__":
-    app = SharePointApp()
-    app.mainloop()
+    app = wx.App()
+    SharePointApp()
+    app.MainLoop()