Do not enable edit rows in device tab for devices that do not support editing ebook metadata.

src/calibre/devices/interface.py

@@ -24,6 +24,8 @@ class Device(object):
     # it can be a list of the BCD numbers of all devices supported by this driver.
     BCD         = None
     THUMBNAIL_HEIGHT = 68 # Height for thumbnails on device
+    # Whether the metadata on books can be set via the GUI.
+    CAN_SET_METADATA = True
     
     def __init__(self, key='-1', log_packets=False, report_progress=None) :
         """ 

src/calibre/devices/usbms/driver.py

@@ -35,6 +35,7 @@ class USBMS(Device):
     EBOOK_DIR_MAIN = ''
     EBOOK_DIR_CARD = ''
     SUPPORTS_SUB_DIRS = False
+    CAN_SET_METADATA = False
 
     def __init__(self, key='-1', log_packets=False, report_progress=None):
         Device.__init__(self, key=key, log_packets=log_packets,

src/calibre/gui2/library.py

@@ -709,6 +709,9 @@ class BooksView(TableView):
     def close(self):
         self._model.close()
         
+    def set_editable(self, editable):
+        self._model.set_editable(editable)
+
     def connect_to_search_box(self, sb):
         QObject.connect(sb, SIGNAL('search(PyQt_PyObject, PyQt_PyObject)'),
                         self._model.search)
@@ -785,7 +788,7 @@ class DeviceBooksModel(BooksModel):
         self.unknown = str(self.trUtf8('Unknown'))
         self.marked_for_deletion = {}
         self.search_engine = OnDeviceSearch(self)
-
+        self.editable = True
 
     def mark_for_deletion(self, job, rows):
         self.marked_for_deletion[job] = self.indices(rows)
@@ -793,7 +796,6 @@ class DeviceBooksModel(BooksModel):
             indices = self.row_indices(row)
             self.emit(SIGNAL('dataChanged(QModelIndex, QModelIndex)'), indices[0], indices[-1])
 
-
     def deletion_done(self, job, succeeded=True):
         if not self.marked_for_deletion.has_key(job):
             return
@@ -818,7 +820,7 @@ class DeviceBooksModel(BooksModel):
         if self.map[index.row()] in self.indices_to_be_deleted():
             return Qt.ItemIsUserCheckable  # Can't figure out how to get the disabled flag in python
         flags = QAbstractTableModel.flags(self, index)
-        if index.isValid():
+        if index.isValid() and self.editable:
             if index.column() in [0, 1] or (index.column() == 4 and self.db.supports_tags()):
                 flags |= Qt.ItemIsEditable
         return flags
@@ -1000,6 +1002,10 @@ class DeviceBooksModel(BooksModel):
             done = True
         return done
         
+    def set_editable(self, editable):
+        self.editable = editable
+        
+
 class SearchBox(QLineEdit):
 
     INTERVAL = 1000 #: Time to wait before emitting search signal

src/calibre/gui2/main.py

@@ -585,7 +585,9 @@ class Main(MainWindow, Ui_MainWindow):
             return
         mainlist, cardlist = job.result
         self.memory_view.set_database(mainlist)
+        self.memory_view.set_editable(self.device_manager.device_class.CAN_SET_METADATA)
         self.card_view.set_database(cardlist)
+        self.card_view.set_editable(self.device_manager.device_class.CAN_SET_METADATA)
         for view in (self.memory_view, self.card_view):
             view.sortByColumn(3, Qt.DescendingOrder)
             if not view.restore_column_widths():