Fix forward not working when changing searches

src/pyj/book_list/boss.pyj

@@ -1,6 +1,7 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
 
+from ajax import encode_query
 from dom import set_css
 from elementmaker import E
 from modals import error_dialog, create_modal_container
@@ -21,6 +22,7 @@ class Boss:
         self.interface_data = interface_data
         self.current_library_id = interface_data['default_library']
         self.current_library_name = interface_data['library_map'][self.current_library_id]
+        self.current_mode = 'book_list'
         self.update_window_title()
         div = E.div(id='book-list-container')
         document.body.appendChild(div)
@@ -51,7 +53,7 @@ class Boss:
         if mode == 'book_list':
             search = data.search or ''
             if search != self.ui.books_view.interface_data.search_result.query:
-                self.ui.books_view.change_search(search)
+                self.ui.books_view.change_search(search, push_state=False)
 
     def change_books(self, data):
         data.search_result.sort = str.split(data.search_result.sort, ',')[:2].join(',')
@@ -63,3 +65,16 @@ class Boss:
         self.interface_data.metadata = data.metadata
         self.interface_data.search_result = data.search_result
         self.ui.refresh_books_view()
+
+    def push_state(self):
+        query = {}
+        if self.current_mode != 'book_list':
+            query.current_mode = self.current_mode
+        idata = self.interface_data
+        if idata.library_id != idata.default_library:
+            query.library_id = idata.library_id
+        sq = idata.search_result.query
+        if sq:
+            query.search = sq
+        query = encode_query(query) or '?'
+        window.history.pushState(None, '', query)

src/pyj/book_list/views.pyj

@@ -1,7 +1,7 @@
 # vim:fileencoding=utf-8
 # License: GPL v3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
 
-from ajax import ajax_send, encode_query
+from ajax import ajax_send
 from dom import set_css, build_rule, clear
 from elementmaker import E
 from gettext import gettext as _
@@ -232,13 +232,13 @@ class BooksView:
         elif end_type != 'abort':
             error_dialog(_('Could not change sort order'), xhr.error_html)
 
-    def change_search(self, query):
+    def change_search(self, query, push_state=True):
         self.abort_get_more_books()
         query = query or ''
         sd = get_session_data()
         data = {'search':query, 'sort':sd.get('sort'), 'library_id':self.interface_data.library_id}
         ajax_progress_dialog('interface-data/get-books', self.search_change_completed.bind(self), _(
-            'Fetching data from server, please wait') + '…', query=data)
+            'Fetching data from server, please wait') + '…', query=data, extra_data_for_callback={'push_state':push_state})
 
     def search_change_completed(self, end_type, xhr, ev):
         if end_type == 'load':
@@ -248,9 +248,9 @@ class BooksView:
                 boss.change_books(data)
             except Exception as err:
                 return error_dialog(_('Could not change search query'), err + '', details=err.stack)
-            query = {'search':self.interface_data.search_result.query, 'library_id':self.interface_data.library_id}
-            window.history.pushState(None, '', encode_query(query))
             boss.ui.close_all_panels()
+            if xhr.extra_data_for_callback.push_state:
+                boss.push_state()
             self.update_fetching_status()
             window.scrollTo(0, 0)
         elif end_type != 'abort':

src/pyj/modals.pyj

@@ -215,7 +215,7 @@ def progress_dialog(msg, on_close=None):
     # Call close() once the task being performed is finished
     return create_progress_dialog(msg, on_close)
 
-def ajax_progress_dialog(path, on_complete, msg, **kw):
+def ajax_progress_dialog(path, on_complete, msg, extra_data_for_callback=None, **kw):
     pd = None
     def on_complete_callback(event_type, xhr, ev):
         nonlocal pd
@@ -225,6 +225,7 @@ def ajax_progress_dialog(path, on_complete, msg, **kw):
     def on_progress_callback(loaded, total, xhr):
         pd.update_progress(loaded, total)
     xhr = ajax(path, on_complete_callback, on_progress=on_progress_callback, **kw)
+    xhr.extra_data_for_callback = extra_data_for_callback
     pd = progress_dialog(msg, xhr.abort.bind(xhr))
     xhr.send()
     return xhr, pd