Make item delete and rename take VLs into consideration

src/calibre/db/cache.py

@@ -1564,24 +1564,60 @@ class Cache(object):
         return val_map
 
     @write_api
-    def rename_items(self, field, item_id_to_new_name_map, change_index=True):
+    def rename_items(self, field, item_id_to_new_name_map, change_index=True,
+                     restrict_to_book_ids=None):
         '''
         Rename items from a many-one or many-many field such as tags or series.
 
         :param change_index: When renaming in a series-like field also change the series_index values.
+        :param restrict_to_book_ids: A list of books for which the rename is to be performed. None if the entire library
         '''
+
         f = self.fields[field]
-        try:
-            func = f.table.rename_item
-        except AttributeError:
-            raise ValueError('Cannot rename items for one-one fields: %s' % field)
         affected_books = set()
-        moved_books = set()
-        id_map = {}
         try:
             sv = f.metadata['is_multiple']['ui_to_list']
         except (TypeError, KeyError, AttributeError):
             sv = None
+
+        if restrict_to_book_ids:
+            # We have a VL. Only change the item name for those books
+            rtb_set = frozenset(restrict_to_book_ids)
+            id_map = {}
+            for old_id, new_name in item_id_to_new_name_map.iteritems():
+                new_names = tuple(x.strip() for x in new_name.split(sv)) if sv else (new_name,)
+                # Get a list of books in the VL with the item
+                books_to_process = f.books_for(old_id) & rtb_set
+                # This should never be empty, but ...
+                if books_to_process:
+                    affected_books.update(books_to_process)
+                    newvals = {}
+                    for book in books_to_process:
+                        # Get the current values, remove the one being renamed, then add
+                        # the new value(s) back
+                        vals = self._field_for(field, book)
+                        # Check for is_multiple
+                        if isinstance(vals, tuple):
+                            vals = set(vals)
+                            # Don't need to worry about case here because we
+                            # are fetching its one-true spelling
+                            vals.remove(self.get_item_name(field, old_id))
+                            # This can put the name back with a different case
+                            vals.update(new_names)
+                            newvals[book] = vals
+                        else:
+                            newvals[book] = new_names[0]
+                    # Allow case changes
+                    self._set_field(field, newvals)
+                    id_map[old_id] = self.get_item_id(field, new_names[0])
+            return affected_books, id_map
+
+        try:
+            func = f.table.rename_item
+        except AttributeError:
+            raise ValueError('Cannot rename items for one-one fields: %s' % field)
+        moved_books = set()
+        id_map = {}
         for item_id, new_name in item_id_to_new_name_map.iteritems():
             new_names = tuple(x.strip() for x in new_name.split(sv)) if sv else (new_name,)
             books, new_id = func(item_id, new_names[0], self.backend)
@@ -1606,10 +1642,11 @@ class Cache(object):
         return affected_books, id_map
 
     @write_api
-    def remove_items(self, field, item_ids):
+    def remove_items(self, field, item_ids, restrict_to_book_ids=None):
         ''' Delete all items in the specified field with the specified ids. Returns the set of affected book ids. '''
         field = self.fields[field]
-        affected_books = field.table.remove_items(item_ids, self.backend)
+        affected_books = field.table.remove_items(item_ids, self.backend,
+                                                  restrict_to_book_ids=restrict_to_book_ids)
         if affected_books:
             if hasattr(field, 'index_field'):
                 self._set_field(field.index_field.name, {bid:1.0 for bid in affected_books})

src/calibre/db/legacy.py

@@ -820,8 +820,9 @@ for field in (
 
 for field in ('authors', 'tags', 'publisher'):
     def renamer(field):
-        def func(self, old_id, new_name):
-            id_map = self.new_api.rename_items(field, {old_id:new_name})[1]
+        def func(self, old_id, new_name, restrict_to_book_ids=None):
+            id_map = self.new_api.rename_items(field, {old_id:new_name},
+                                       restrict_to_book_ids=restrict_to_book_ids)[1]
             if field == 'authors':
                 return id_map[old_id]
         return func
@@ -877,8 +878,8 @@ for field in ('author', 'tag', 'series'):
 for field in ('publisher', 'series', 'tag'):
     def getter(field):
         fname = 'tags' if field == 'tag' else field
-        def func(self, item_id):
-            self.new_api.remove_items(fname, (item_id,))
+        def func(self, item_id, restrict_to_book_ids=None):
+            self.new_api.remove_items(fname, (item_id,), restrict_to_book_ids=restrict_to_book_ids)
         return func
     setattr(LibraryDatabase, 'delete_%s_using_id' % field, MT(getter(field)))
 # }}}

src/calibre/db/tables.py

@@ -265,8 +265,37 @@ class ManyToOneTable(Table):
                 [(x,) for x in clean])
         return clean
 
-    def remove_items(self, item_ids, db):
+    def remove_items(self, item_ids, db, restrict_to_book_ids=None):
         affected_books = set()
+
+        if restrict_to_book_ids:
+            rtb_set = frozenset(restrict_to_book_ids)
+            items_to_process_normally = set()
+            # Check if all the books with the item are in the restriction. If
+            # so, process them normally
+            for item_id in item_ids:
+                books_to_process = self.col_book_map.get(item_id, set())
+                books_not_to_delete = books_to_process - rtb_set
+                if books_not_to_delete:
+                    # Some books not in restriction. Must do special processing
+                    books_to_delete = books_to_process & rtb_set
+                    # remove the books from the old id maps
+                    self.col_book_map[item_id] = books_not_to_delete
+                    for book_id in books_to_delete:
+                        self.book_col_map.pop(book_id, None)
+                    # Delete links to the affected books from the link table. As
+                    # this is a many-to-one mapping we know that we can delete
+                    # links without checking the item ID
+                    db.executemany('DELETE FROM {0} WHERE {1}=?'.format(self.link_table,
+                                                    'book'), books_to_delete)
+                    affected_books |= books_to_delete
+                else:
+                    # Process normally any items where the VL was not significant
+                    items_to_process_normally.add(item_id)
+            if items_to_process_normally:
+                affected_books |= self.remove_items(items_to_process_normally, db)
+            return affected_books
+
         for item_id in item_ids:
             val = self.id_map.pop(item_id, null)
             if val is null:
@@ -373,8 +402,38 @@ class ManyToManyTable(ManyToOneTable):
                 [(x,) for x in clean])
         return clean
 
-    def remove_items(self, item_ids, db):
+    def remove_items(self, item_ids, db, restrict_to_book_ids=None):
         affected_books = set()
+        if restrict_to_book_ids:
+            rtb_set = frozenset(restrict_to_book_ids)
+            items_to_process_normally = set()
+            # Check if all the books with the item are in the restriction. If
+            # so, process them normally
+            for item_id in item_ids:
+                books_to_process = self.col_book_map.get(item_id, set())
+                books_not_to_delete = books_to_process - rtb_set
+                if books_not_to_delete:
+                    # Some books not in restriction. Must do special processing
+                    books_to_delete = books_to_process & rtb_set
+                    # remove the books from the old id maps
+                    self.col_book_map[item_id] = books_not_to_delete
+                    for book_id in books_to_delete:
+                        self.book_col_map[book_id] = tuple(
+                           x for x in self.book_col_map.get(book_id, ()) if x != item_id)
+                    affected_books |= books_to_delete
+                else:
+                    items_to_process_normally.add(item_id)
+            # Delete book/item pairs from the link table. We don't need to do
+            # anything with the main table because books with the old ID are
+            # still in the library.
+            db.executemany('DELETE FROM {0} WHERE {1}=? and {2}=?'.format(
+                    self.link_table, 'book', self.metadata['link_column']),
+                           [(b, i) for b in affected_books for i in item_ids])
+            # Take care of any items where the VL was not significant
+            if items_to_process_normally:
+                affected_books |= self.remove_items(items_to_process_normally, db)
+            return affected_books
+
         for item_id in item_ids:
             val = self.id_map.pop(item_id, null)
             if val is null:

src/calibre/gui2/tag_browser/model.py

@@ -855,6 +855,11 @@ class TagsModel(QAbstractItemModel):  # {{{
         self.drag_drop_finished.emit(ids)
     # }}}
 
+    def get_book_ids_to_use(self):
+        if self.db.data.get_base_restriction() or self.db.data.get_search_restriction():
+            return self.db.search('', return_matches=True, sort_results=False)
+        return None
+
     def _get_category_nodes(self, sort):
         '''
         Called by __init__. Do not directly call this method.
@@ -863,11 +868,10 @@ class TagsModel(QAbstractItemModel):  # {{{
         self.categories = {}
 
         # Get the categories
-        if self.db.data.get_base_restriction() or self.db.data.get_search_restriction():
         try:
             data = self.db.new_api.get_categories(sort=sort,
                     icon_map=self.category_icon_map,
-                        book_ids=self.db.search('', return_matches=True, sort_results=False),
+                    book_ids=self.get_book_ids_to_use(),
                     first_letter_sort = self.collapse_model == 'first letter')
         except:
             import traceback
@@ -875,9 +879,6 @@ class TagsModel(QAbstractItemModel):  # {{{
             data = self.db.new_api.get_categories(sort=sort, icon_map=self.category_icon_map,
                     first_letter_sort = self.collapse_model == 'first letter')
             self.restriction_error.emit()
-        else:
-            data = self.db.new_api.get_categories(sort=sort, icon_map=self.category_icon_map,
-                        first_letter_sort = self.collapse_model == 'first letter')
 
         # Reconstruct the user categories, putting them into metadata
         self.db.field_metadata.remove_dynamic_categories()
@@ -1042,20 +1043,13 @@ class TagsModel(QAbstractItemModel):  # {{{
             item.tag.name = val
             self.search_item_renamed.emit()  # Does a refresh
         else:
-            if key == 'series':
-                self.db.rename_series(item.tag.id, val)
-            elif key == 'publisher':
-                self.db.rename_publisher(item.tag.id, val)
-            elif key == 'tags':
-                self.db.rename_tag(item.tag.id, val)
-            elif key == 'authors':
-                self.db.rename_author(item.tag.id, val)
-            elif self.db.field_metadata[key]['is_custom']:
-                self.db.rename_custom_item(item.tag.id, val,
-                                    label=self.db.field_metadata[key]['label'])
+            restrict_to_book_ids=self.get_book_ids_to_use()
+            self.db.new_api.rename_items(key, {item.tag.id: val},
+                                         restrict_to_book_ids=restrict_to_book_ids)
             self.tag_item_renamed.emit()
             item.tag.name = val
             item.tag.state = TAG_SEARCH_STATES['clear']
+            if not restrict_to_book_ids:
                 self.rename_item_in_all_user_categories(name, key, val)
             self.refresh_required.emit()
         return True

src/calibre/gui2/tag_browser/ui.py

@@ -223,14 +223,18 @@ class TagBrowserMixin(object):  # {{{
             if (category in ['tags', 'series', 'publisher'] or
                     db.new_api.field_metadata.is_custom_field(category)):
                 m = self.tags_view.model()
+                restrict_to_book_ids = m.get_book_ids_to_use()
+                if not restrict_to_book_ids:
                     for item in to_delete:
                         m.delete_item_from_all_user_categories(orig_name[item], category)
-                for old_id in to_rename:
+                for old_id in to_rename and not restrict_to_book_ids:
                     m.rename_item_in_all_user_categories(orig_name[old_id],
                                             category, unicode(to_rename[old_id]))
 
-                db.new_api.remove_items(category, to_delete)
-                db.new_api.rename_items(category, to_rename, change_index=False)
+                db.new_api.remove_items(category, to_delete,
+                                        restrict_to_book_ids=restrict_to_book_ids)
+                db.new_api.rename_items(category, to_rename, change_index=False,
+                                        restrict_to_book_ids=restrict_to_book_ids)
 
                 # Clean up the library view
                 self.do_tag_item_renamed()
@@ -260,7 +264,9 @@ class TagBrowserMixin(object):  # {{{
             delete_func = partial(db.delete_custom_item_using_id, label=cc_label)
         m = self.tags_view.model()
         if delete_func:
-            delete_func(item_id)
+            restrict_to_book_ids=m.get_book_ids_to_use()
+            delete_func(item_id, restrict_to_book_ids=restrict_to_book_ids)
+            if not restrict_to_book_ids:
                 m.delete_item_from_all_user_categories(orig_name, category)
 
         # Clean up the library view