kivy: simplify wallets dialog

gui/kivy/main.kv

@@ -13,7 +13,6 @@
     text_size: self.width, None
     height: self.texture_size[1]
 
-
 <VGridLayout@GridLayout>:
     rows: 1
     size_hint: 1, None

gui/kivy/uix/dialogs/wallets.py

@@ -17,53 +17,29 @@ Builder.load_string('''
     path: ''
     BoxLayout:
         orientation: 'vertical'
-        BoxLayout:
-            height: '48dp'
-            size_hint_y: None
-            orientation: 'horizontal'
-            Label:
-                text: _('Current Wallet') + ': '
-                height: '48dp'
-                size_hint_y: None
-            Label:
-                id: wallet_name
-                height: '48dp'
-                size_hint_y: None
-                text: os.path.basename(app.wallet.storage.path)
-                on_text:
-                    popup.path = os.path.join(wallet_selector.path, self.text)
-        Widget
-            size_hint_y: None
-        Label:
-            height: '48dp'
-            size_hint_y: None
-            text: _('Wallets')
         FileChooserListView:
             id: wallet_selector
             dirselect: False
             filter_dirs: True
             filter: '*.*'
             path: os.path.dirname(app.wallet.storage.path)
-            on_selection:
-                wallet_name.text = os.path.basename(self.selection[0]) if self.selection else ''
-            size_hint_y: 0.4
+            size_hint_y: 0.6
         Widget
             size_hint_y: 0.1
-
         GridLayout:
             cols: 2
-            size_hint_y: None
+            size_hint_y: 0.1
             Button:
-                size_hint: 0.5, None
+                size_hint: 0.1, None
                 height: '48dp'
                 text: _('Cancel')
                 on_release:
                     popup.dismiss()
             Button:
                 id: open_button
-                size_hint: 0.5, None
+                size_hint: 0.1, None
                 height: '48dp'
-                text: _('Open') if popup.path else _('New Wallet')
+                text: _('Open') if wallet_selector.selection else _('New Wallet')
                 on_release:
                     popup.dismiss()
                     root.new_wallet(app, wallet_selector.path)
@@ -79,4 +55,3 @@ class WalletDialog(Factory.Popup):
         else:
             d = LabelDialog(_('Enter wallet name'), '', cb)
             d.open()
-