kivy: use NumericProperty for blocks and nodes

gui/kivy/main_window.py

@@ -22,7 +22,7 @@ from kivy.core.window import Window
 from kivy.logger import Logger
 from kivy.utils import platform
 from kivy.properties import (OptionProperty, AliasProperty, ObjectProperty,
-                             StringProperty, ListProperty, BooleanProperty)
+                             StringProperty, ListProperty, BooleanProperty, NumericProperty)
 from kivy.cache import Cache
 from kivy.clock import Clock
 from kivy.factory import Factory
@@ -75,6 +75,8 @@ class ElectrumWindow(App):
     electrum_config = ObjectProperty(None)
 
     language = StringProperty('en')
+    num_blocks = NumericProperty(0)
+    num_nodes = NumericProperty(0)
 
     def set_URI(self, uri):
         self.switch_to('send')
@@ -532,6 +534,8 @@ class ElectrumWindow(App):
 
     def on_network(self, event, *args):
         if event == 'updated':
+            self.num_blocks = self.network.get_local_height()
+            self.num_nodes = len(self.network.get_interfaces())
             self._trigger_update_wallet()
         elif event == 'status':
             self._trigger_update_status()

gui/kivy/uix/dialogs/checkpoint_dialog.py

@@ -22,11 +22,11 @@ Builder.load_string('''
         TopLabel:
             height: '48dp'
             id: bc_height
-            text: ''
+            text: _("Verified headers: %d blocks.")% app.num_blocks
         TopLabel:
             height: '48dp'
             id: bc_status
-            text: ''
+            text: _("Connected to %d nodes.")% app.num_nodes if app.num_nodes else _("Not connected?")
         Widget:
             size_hint: 1, 0.1
         TopLabel:
@@ -88,12 +88,6 @@ class CheckpointDialog(Factory.Popup):
         self.cp_height, self.cp_value = self.network.blockchain.get_checkpoint()
         self.callback = callback
 
-        n_nodes = len(network.get_interfaces())
-        n_blocks = network.get_local_height()
-        self.ids.bc_height.text = _("Verified headers: %d blocks.")%n_blocks
-        self.ids.bc_status.text = _("Connected to %d nodes.")%n_nodes if n_nodes else _("Not connected?")
-
-
     def on_height_str(self):
         try:
             new_height = int(self.ids.height_input.text)

gui/kivy/uix/dialogs/settings.py

@@ -121,7 +121,7 @@ Builder.load_string('''
                     action: partial(root.coinselect_dialog, self)
                 CardSeparator
                 SettingsItem:
-                    status: root.blockchain_status()
+                    status: "%d blocks"% app.num_blocks
                     title: _('Blockchain') + ': ' + self.status
                     description: _("Configure checkpoints")
                     action: partial(root.blockchain_dialog, self)
@@ -191,17 +191,12 @@ class SettingsDialog(Factory.Popup):
             self._coinselect_dialog = ChoiceDialog(_('Coin selection'), choosers, chooser_name, cb)
         self._coinselect_dialog.open()
 
-    def blockchain_status(self):
-        height = self.app.network.get_local_height()
-        return "%d blocks"% height
-
     def blockchain_dialog(self, item, dt):
         from checkpoint_dialog import CheckpointDialog
         if self._blockchain_dialog is None:
             def callback(height, value):
                 if value:
                     self.app.network.blockchain.set_checkpoint(height, value)
-                    item.status = self.blockchain_status()
             self._blockchain_dialog = CheckpointDialog(self.app.network, callback)
         self._blockchain_dialog.open()