Track virtual library state as well

Also ensure that library and virtual library state is always present in
the book list URLs

src/calibre/srv/ajax.py

@@ -545,7 +545,8 @@ def search_result(ctx, rd, db, query, num, offset, sort, sort_order, vl=''):
         'base_url':ctx.url_for(search, library_id=db.server_library_id),
         'query': query,
         'library_id': db.server_library_id,
-            'book_ids':ids
+        'book_ids':ids,
+        'vl': vl,
     }
 
 

src/calibre/srv/code.py

@@ -304,15 +304,16 @@ def book_metadata(ctx, rd, book_id):
     '''
     Get metadata for the specified book. If no book_id is specified, return metadata for a random book.
 
-    Optional: ?library_id=<default library>
+    Optional: ?library_id=<default library>&vl=<virtual library>
     '''
-    library_id, db = get_basic_query_data(ctx, rd)[:2]
+    library_id, db, sorts, orders, vl = get_basic_query_data(ctx, rd)
 
     def notfound():
         raise HTTPNotFound(_('No book with id: {} in library: {}').format(book_id, library_id))
 
     if not book_id:
-        book_id = random.choice(tuple(db.all_book_ids()))
+        all_ids = db.books_in_virtual_library(vl) if vl else db.all_book_ids()
+        book_id = random.choice(tuple(all_ids))
     elif not db.has_id(book_id):
         notfound()
     data = book_as_json(db, book_id)

src/pyj/book_list/book_details.pyj

@@ -15,7 +15,7 @@ from session import get_interface_data
 from utils import fmt_sidx, parse_url_params, conditional_timeout
 
 from book_list.router import back, open_book
-from book_list.library_data import book_metadata, cover_url, set_book_metadata, current_library_id, library_data, download_url, load_status
+from book_list.library_data import book_metadata, cover_url, set_book_metadata, current_library_id, library_data, download_url, load_status, current_virtual_library
 from book_list.top_bar import create_top_bar, set_title, add_button
 from book_list.ui import set_panel_handler
 from book_list.views import search
@@ -401,7 +401,7 @@ def fetch_metadata(container_id, book_id):
     if current_fetch:
         current_fetch.abort()
     current_fetch = ajax('interface-data/book-metadata/' + book_id, metadata_fetched.bind(None, container_id, book_id),
-                            query={'library_id':current_library_id().library_id})
+                         query={'library_id':current_library_id(), 'vl':current_virtual_library()})
     current_fetch.send()
     container = container.lastChild
     clear(container)

src/pyj/book_list/library_data.pyj

@@ -18,6 +18,11 @@ def current_library_id():
     return q.library_id or get_interface_data().default_library_id
 
 
+def current_virtual_library():
+    q = parse_url_params()
+    return q.vl or ''
+
+
 def url_books_query(sd):
     q = parse_url_params()
     sd = sd or get_session_data()
@@ -26,6 +31,7 @@ def url_books_query(sd):
         'library_id': lid,
         'sort': q.sort or sd.get_library_option(lid, 'sort'),
         'search': q.search,
+        'vl': current_virtual_library(),
     }
 
 
@@ -37,7 +43,8 @@ def loaded_books_query():
     return {
         'library_id': sr.library_id if sr else None,
         'sort': sort,
-        'search': sr?.query
+        'search': sr?.query,
+        'vl':sr?.vl
     }
 
 
@@ -111,8 +118,14 @@ def ensure_current_library_data():
     q = url_books_query()
     loaded = loaded_books_query()
     matches = True
+
+    def is_same(a, b):
+        if not a and not b:
+            return True
+        return a is b
+
     for key in q:
-        if q[key] is not loaded[key]:
+        if not is_same(q[key], loaded[key]):
             matches = False
             break
     if not matches:

src/pyj/book_list/search.pyj

@@ -12,7 +12,7 @@ from modals import show_modal
 from utils import rating_to_stars
 from session import get_interface_data
 
-from book_list.library_data import library_data, current_library_id
+from book_list.library_data import library_data, current_library_id, current_virtual_library
 from book_list.ui import show_panel
 from book_list.router import back
 from book_list.top_bar import create_top_bar, add_button
@@ -357,7 +357,7 @@ def refresh():
         state.currently_loading.abort()
         state.currently_loading = None
     sd = get_session_data()
-    query = {'library_id': current_library_id()}
+    query = {'library_id': current_library_id(), 'vl':current_virtual_library()}
     for k in 'sort_tags_by partition_method collapse_at dont_collapse hide_empty_categories'.split(' '):
         query[k] = sd.get(k) + ''
     xhr = ajax('interface-data/tag-browser', on_data_fetched, query=query, bypass_cache=False)

src/pyj/book_list/ui.pyj

@@ -8,7 +8,7 @@ from elementmaker import E
 from book_list.constants import book_list_container_id
 from book_list.globals import get_current_query
 from book_list.router import push_state
-from book_list.library_data import current_library_id
+from book_list.library_data import current_library_id, current_virtual_library
 
 
 panel_handlers = {}
@@ -45,6 +45,15 @@ def currently_showing_panel():
     return c.dataset.panel
 
 
+def add_library_info(query):
+        if not query.library_id:
+            query.library_id = current_library_id()
+        if not query.vl:
+            vlid = current_virtual_library()
+            if vlid:
+                query.vl = vlid
+
+
 def show_panel(panel, query=None, replace=False):
     if query is None:
         query = {}
@@ -52,6 +61,7 @@ def show_panel(panel, query=None, replace=False):
         query = {k:query[k] for k in query if k is not 'panel'}
     if panel is not 'home':
         query.panel = panel
+        add_library_info(query)
     push_state(query, replace=replace)
 
 
@@ -75,7 +85,5 @@ apply_url_state.back_from_current = def back_from_current(current_query):
             q = {}
         else:
             q = {'panel':'book_list'}
-            lid = current_library_id()
-            if lid:
-                q.library_id = lid
+            add_library_info(q)
     return q

src/pyj/book_list/views.pyj

@@ -14,7 +14,7 @@ from book_list.cover_grid import (
 from book_list.globals import get_session_data
 from book_list.item_list import create_item, create_item_list
 from book_list.library_data import (
-    book_metadata, current_library_id, current_sorted_field,
+    book_metadata, current_sorted_field,
     ensure_current_library_data, library_data, load_status, loaded_books_query,
     thumbnail_cache, url_books_query
 )
@@ -61,7 +61,7 @@ def clear_grid():
 
 
 def show_book_details(book_id):
-    show_panel('book_details', {'book_id':book_id, 'library_id':current_library_id()})
+    show_panel('book_details', {'book_id':book_id})
 
 
 def create_image(book_id, max_width, max_height, on_load):
@@ -296,7 +296,7 @@ def create_more_actions_panel(container_id):
     items = [
         create_item(_('Book list mode'), subtitle=_('Change how the list of books is displayed')),
         create_item(_('A random book'), subtitle=_('Choose a random book from the library'), action=def():
-                    query = {'library_id': current_library_id(), 'book_id':'0'}
+                    query = {'book_id':'0'}
                     show_panel('book_details', query=query, replace=True)
         ),
     ]

src/pyj/read_book/ui.pyj

@@ -13,7 +13,7 @@ from utils import human_readable, debounce
 from book_list.constants import read_book_container_id
 from read_book.db import get_db
 from book_list.router import update_window_title
-from book_list.library_data import library_data, current_library_id
+from book_list.library_data import library_data, current_library_id, current_virtual_library
 from read_book.view import View
 
 RENDER_VERSION = __RENDER_VERSION__
@@ -75,6 +75,7 @@ class ReadUI:
         if self.current_book_id:
             a.setAttribute('href', encode_query({
                 'library_id':current_library_id(),
+                'vl': current_virtual_library(),
                 'book-id': (self.current_book_id + ''),
                 'panel':'book-details'
             }))