kivy: add context button for tx details

gui/kivy/main.kv

@@ -353,6 +353,16 @@ BoxLayout:
                     .format(app.status)
                 font_size: '22dp'
                 minimum_width: '1dp'
+                on_release:
+                    app.context_action()
+
+            ActionButton:
+                id: context_button
+                text: app.context
+                width: 0
+                on_text:
+                    self.width = 20 if self.text else 0
+                on_release: app.context_action()
 
             ActionOverflow:
                 id: ao

gui/kivy/main_window.py

@@ -76,8 +76,9 @@ class ElectrumWindow(App):
         keys = sorted(base_units.keys())
         self.base_unit = keys[ (keys.index(self.base_unit) + 1) % len(keys)]
 
+    context = StringProperty('')
+    context_action = lambda: None
     status = StringProperty(_('Not Connected'))
-
     fiat_unit = StringProperty('')
 
     def decimal_point(self):
@@ -759,6 +760,17 @@ class ElectrumWindow(App):
         popup.tx_hash = tx_hash
         popup.open()
 
+    def tx_selected(self, txid, state):
+        if state == 'down':
+            self.context = 'tx'
+            self.context_action = lambda: self.tx_dialog(txid)
+        else:
+            self.reset_context()
+
+    def reset_context(self):
+        self.context = ''
+        self.context_action = lambda: None
+
     def amount_dialog(self, screen, show_max):
         popup = Builder.load_file('gui/kivy/uix/ui_screens/amount.kv')
         but_max = popup.ids.but_max

gui/kivy/uix/ui_screens/history.kv

@@ -38,7 +38,7 @@
     size: self.texture_size[0] + dp(32), self.texture_size[1] + dp(7)
 
 
-<CardItem@ButtonBehavior+GridLayout>
+<CardItem@ToggleButtonBehavior+GridLayout>
     canvas.before:
         Color:
             rgba: 0.192, .498, 0.745, 1 if self.state == 'down' else 0
@@ -50,6 +50,7 @@
     spacing: '2dp'
     size_hint: 1, None
     height: self.minimum_height
+    group: 'history'
 
 <RecentActivityItem@CardItem>
     icon: 'atlas://gui/kivy/theming/light/important'
@@ -60,10 +61,9 @@
     confirmations: 0
     date: '0/0/0'
     quote_text: '.'
-
     spacing: '9dp'
     on_release:
-        app.tx_dialog(root.tx_hash)
+        app.tx_selected(root.tx_hash, self.state)
     BoxLayout:
         size_hint: 1, None
         spacing: '8dp'