Update 'CARDPUTER CircuitPython/projects/text_editor.py'

CARDPUTER CircuitPython/projects/text_editor.py

     sdcard = sdcardio.SDCard(spi, cs)
     vfs = storage.VfsFat(sdcard)
 
-    storage.mount(vfs, "/sd") # access files on sd card here
+    storage.mount(vfs, "/sd", readonly=False) # access files on sd card here
     SD_status = "SD Card Mounted"
 except OSError:
     SD_status = "No SD card found"
 intro_text_area.append(text_area)
 
 filename_text = ""
-save_text = "Save File - Enter Filename\nIf file exists, it will be overwritten"
+save_text = "Save File - Enter Filename\nOverwriting Enabled"
 save_group = label.Label(terminalio.FONT, text=save_text, color="C3B")
 save_group.x = 10
 save_group.y = 10
 filename_group.y = 60
 save_group.append(filename_group)
 
-open_text = "open file"
-open_group = label.Label(terminalio.FONT, text=open_text)
+files_text = ""
+open_text = "Open File - Select using arrow keys"
+open_group = label.Label(terminalio.FONT, text=open_text, color="C3B")
 open_group.x = 10
 open_group.y = 10
+files_group = label.Label(terminalio.FONT, text=files_text)
+files_group.x = 0
+files_group.y = 30
+open_group.append(files_group)
+
+open_cursor = 0
 
 while True:
     key = keyb.scan()
     elif key == "CTRLO":
         board.DISPLAY.root_group = open_group
         page="open"
+        files_text = ""
+        index = 0
+        for file in os.listdir("/sd"):
+            filename = str(file)
+            if index == open_cursor:
+                filename = "> " + filename
+            files_text = files_text + filename+"\n"
+            index += 1
+        files_group.text = files_text
         
     elif key == "ESC":
         if page == "editor":
 
         ## The save file menu - for typing the filename
         elif page == "save":
-            if key == "\n":
-                pass # handle saving the file
+            if key == "DOWN":
+                filename_text = filename_text + "."
+                filename_group.text = filename_text
+            elif key == "\n":
+                with open("/sd/"+filename_text, "w") as f:
+                    f.write(text)
+                    f.close()
+                board.DISPLAY.root_group = intro_text_area
+                page = "editor"
             elif not keyb.is_alphanumeric(key):
                 pass # dont allow special characters to be entered
             else:
                 filename_text = filename_text+key
                 filename_group.text=filename_text
-            
+
+        ## The open file menu - for selecting a file
+        elif page == "open":
+            pass