kivy: connect do_clear button, fixes

gui/kivy/main_window.py

@@ -581,7 +581,6 @@ class ElectrumWindow(App):
         #Logger.info('orientation: {}'.format(self._orientation))
         #Logger.info('ui_mode: {}'.format(self._ui_mode))
 
-
     def save_new_contact(self, address, label):
         address = unicode(address)
         label = unicode(label)
@@ -657,18 +656,6 @@ class ElectrumWindow(App):
         # wait for screen to load
         Clock.schedule_once(set_address, .5)
 
-    def do_clear(self):
-        tabs = self.tabs
-        screen_send = tabs.ids.screen_send
-        content = screen_send.ids.content
-        cts = content.ids
-        cts.payto_e.text = cts.message_e.text = cts.amount_e.text = \
-            cts.fee_e.text = ''
-
-        self.set_frozen(content, False)
-
-        self.update_status()
-
     def set_frozen(self, entry, frozen):
         if frozen:
             entry.disabled = True

gui/kivy/uix/screens.py

@@ -203,6 +203,12 @@ class SendScreen(CScreen):
         self.ids.message_e.text = uri.get('message', '')
         self.ids.amount_e.text = uri.get('amount', '')
 
+    def do_clear(self):
+        cts = self.ids
+        cts.payto_e.text = cts.message_e.text = cts.amount_e.text = ''
+        #self.set_frozen(content, False)
+        #self.update_status()
+
     def do_send(self):
         scrn = self.ids
         label = unicode(scrn.message_e.text)
@@ -216,11 +222,10 @@ class SendScreen(CScreen):
             return
 
         amount = self.app.get_amount(scrn.amount_e.text)
-        fee = scrn.fee_e.amt
-        if not fee:
-            app.show_error(_('Invalid Fee'))
-            return
-
+        #fee = scrn.fee_e.amt
+        #if not fee:
+        #    app.show_error(_('Invalid Fee'))
+        #    return
         fee = None
         message = 'sending {} {} to {}'.format(self.app.base_unit, scrn.amount_e.text, r)
         outputs = [('address', to_address, amount)]

gui/kivy/uix/ui_screens/send.kv

@@ -164,12 +164,11 @@ SendScreen:
                 text: _('Clear')
                 size_hint_y: None
                 height: '38dp'
-                disabled: False
+                on_release: send_screen.do_clear()
             Button:
                 text: _('Send')
                 size_hint_y: None
                 height: '38dp'
-                disabled: False
                 on_release: send_screen.do_send()
         Widget