kivy network dialog: update server and proxy properly

Previously "proxy" would only get updated when closing and reopening
the network dialog. "server" would only get updated after successful
connection establishment to specified server.

electrum/gui/kivy/main_window.py

@@ -109,6 +109,13 @@ class ElectrumWindow(App):
     def toggle_oneserver(self, x):
         self.oneserver = not self.oneserver
 
+    proxy_str = StringProperty('')
+    def update_proxy_str(self, proxy: dict):
+        mode = proxy.get('mode')
+        host = proxy.get('host')
+        port = proxy.get('port')
+        self.proxy_str = (host + ':' + port) if mode else _('None')
+
     def choose_server_dialog(self, popup):
         from .uix.dialogs.choice_dialog import ChoiceDialog
         protocol = 's'
@@ -288,6 +295,7 @@ class ElectrumWindow(App):
             self.auto_connect = net_params.auto_connect
             self.oneserver = net_params.oneserver
             self.proxy_config = net_params.proxy if net_params.proxy else {}
+            self.update_proxy_str(self.proxy_config)
 
         self.plugins = kwargs.get('plugins', [])
         self.gui_object = kwargs.get('gui_object', None)
@@ -667,6 +675,7 @@ class ElectrumWindow(App):
         self.tabs = self.root.ids['tabs']
 
     def update_interfaces(self, dt):
+        net_params = self.network.get_parameters()
         self.num_nodes = len(self.network.get_interfaces())
         self.num_chains = len(self.network.get_blockchains())
         chain = self.network.blockchain()
@@ -675,6 +684,10 @@ class ElectrumWindow(App):
         interface = self.network.interface
         if interface:
             self.server_host = interface.host
+        else:
+            self.server_host = str(net_params.host) + ' (connecting...)'
+        self.proxy_config = net_params.proxy or {}
+        self.update_proxy_str(self.proxy_config)
 
     def on_network_event(self, event, *args):
         Logger.info('network event: '+ event)

electrum/gui/kivy/uix/ui_screens/network.kv

@@ -24,10 +24,7 @@ Popup:
 
                 CardSeparator
                 SettingsItem:
-                    proxy: app.proxy_config.get('mode')
-                    host: app.proxy_config.get('host')
-                    port: app.proxy_config.get('port')
-                    title: _("Proxy") + ': ' + ((self.host +':' + self.port) if self.proxy else _('None'))
+                    title: _("Proxy") + ': ' + app.proxy_str
                     description: _('Proxy configuration')
                     action: lambda x: app.popup_dialog('proxy')
 

electrum/gui/kivy/uix/ui_screens/proxy.kv

@@ -73,5 +73,4 @@ Popup:
                     if proxy['mode']=='none': proxy = None
                     net_params = net_params._replace(proxy=proxy)
                     app.network.run_from_another_thread(app.network.set_parameters(net_params))
-                    app.proxy_config = proxy if proxy else {}
                     nd.dismiss()

electrum/gui/kivy/uix/ui_screens/server.kv

@@ -23,7 +23,7 @@ Popup:
                 height: '36dp'
                 size_hint_x: 3
                 size_hint_y: None
-                text: app.server_host
+                text: app.network.get_parameters().host
             Label:
                 height: '36dp'
                 size_hint_x: 1
@@ -36,7 +36,7 @@ Popup:
                 height: '36dp'
                 size_hint_x: 3
                 size_hint_y: None
-                text: app.server_port
+                text: app.network.get_parameters().port
             Widget
             Button:
                 id: chooser