[UI] Add and improve trackers tab

First, added trackers tab to the WebUI.
Second, now we can view all the trackers and view each:
* status
* number of peers
* additional message
Third, information about DHT, PeX and LSD is also added.
Fourth, moved the private torrent info to the details tab.

closes: https://dev.deluge-torrent.org/ticket/1015

deluge/ui/client.py

@@ -741,6 +741,12 @@ def connection_info(self):
 
         return None
 
+    def connection_version(self):
+        if self.connected():
+            return self._daemon_proxy.daemon_info
+
+        return ''
+
     def register_event_handler(self, event, handler):
         """
         Registers a handler that will be called when an event is received from the daemon.

deluge/ui/gtk3/glade/main_window.tabs.ui

@@ -591,7 +591,7 @@
                           </object>
                           <packing>
                             <property name="left_attach">4</property>
-                            <property name="top_attach">1</property>
+                            <property name="top_attach">5</property>
                           </packing>
                         </child>
                         <child>
@@ -824,7 +824,7 @@
                           </object>
                           <packing>
                             <property name="left_attach">3</property>
-                            <property name="top_attach">1</property>
+                            <property name="top_attach">5</property>
                           </packing>
                         </child>
                         <child>

deluge/ui/gtk3/trackers_tab.py

@@ -8,9 +8,13 @@
 
 import logging
 
+from gi.repository.Gdk import EventType
 from gi.repository.Gtk import CellRendererText, ListStore, SortType, TreeViewColumn
 
 import deluge.component as component
+from deluge.common import VersionSplit
+from deluge.decorators import maybe_coroutine
+from deluge.ui.client import client
 
 from .tab_data_funcs import ftranslate
 from .torrentdetails import Tab
@@ -36,6 +40,8 @@ def __init__(self):
         self.trackers = {}
         self.constant_rows = {}
 
+        self._can_get_trackers_info = False
+
         # self.treeview.append_column(
         #     Gtk.TreeViewColumn(_('Tier'), Gtk.CellRendererText(), text=0)
         # )
@@ -104,6 +110,16 @@ def _fill_constant_rows(self):
             self.constant_rows[item.lower()] = row
 
     def update(self):
+        if client.is_standalone():
+            self._can_get_trackers_info = True
+        else:
+            self._can_get_trackers_info = (
+                VersionSplit(client.connection_version()) > VersionSplit('2.0.5')
+            )
+        self.do_update()
+
+    @maybe_coroutine
+    async def do_update(self):
         # Get the first selected torrent
         torrent_id = component.get('TorrentView').get_selected_torrents()
 
@@ -124,24 +140,41 @@ def update(self):
 
         session = component.get('SessionProxy')
 
-        tracker_keys = [
-            'trackers',
-            'trackers_status',
-            'trackers_peers',
-        ]
+        if self._can_get_trackers_info:
+            tracker_keys = [
+                'trackers',
+                'trackers_status',
+                'trackers_peers',
+            ]
+        else:
+            tracker_keys = [
+                'tracker_host',
+                'tracker_status',
+            ]
+
+            perrs_sources = await session.get_torrent_status(torrent_id, ['peers_source'])
+            self._on_get_peers_source_status(perrs_sources)
 
-        session.get_torrent_status(torrent_id, tracker_keys).addCallback(
-            self._on_get_torrent_tracker_status
-        )
-        session.get_torrent_status(torrent_id, ['peers_source']).addCallback(
-            self._on_get_peers_source_status
-        )
+        status = await session.get_torrent_status(torrent_id, tracker_keys)
+        self._on_get_torrent_tracker_status(status)
 
     def _on_get_torrent_tracker_status(self, status):
         # Check to see if we got valid data from the core
         if not status:
             return
 
+        if not self._can_get_trackers_info:
+            status['trackers'] = [
+                {
+                    'url': status['tracker_host'],
+                    'message': ''
+                }
+            ]
+            status['trackers_status'] = {
+                status['tracker_host']: status['tracker_status']
+            }
+            status['trackers_peers'] = {}
+
         new_trackers = set()
         for tracker in status['trackers']:
             new_trackers.add(tracker['url'])
@@ -204,6 +237,8 @@ def _on_button_press_event(self, widget, event):
         if event.button == 3:
             self.trackers_menu.popup(None, None, None, None, event.button, event.time)
             return True
+        elif event.type == EventType.DOUBLE_BUTTON_PRESS:
+            self.on_menuitem_edit_trackers_activate(event.button)
 
     def on_menuitem_edit_trackers_activate(self, button):
         torrent_id = component.get('TorrentView').get_selected_torrent()