qt receive tab: show address on hw wallet

plugins/hw_wallet/plugin.py

@@ -26,6 +26,7 @@
 
 from electrum.plugins import BasePlugin, hook
 from electrum.i18n import _
+from electrum.bitcoin import is_address
 
 
 class HW_PluginBase(BasePlugin):
@@ -58,3 +59,19 @@ class HW_PluginBase(BasePlugin):
         uninitialized, go through the initialization process.
         """
         raise NotImplementedError()
+
+    def show_address(self, wallet, address, keystore=None):
+        pass  # implemented in child classes
+
+    def show_address_helper(self, wallet, address, keystore=None):
+        if keystore is None:
+            keystore = wallet.get_keystore()
+        if not is_address(address):
+            keystore.handler.show_error(_('Invalid Bitcoin Address'))
+            return False
+        if not wallet.is_mine(address):
+            keystore.handler.show_error(_('Address not in wallet.'))
+            return False
+        if type(keystore) != self.keystore_class:
+            return False
+        return True

plugins/hw_wallet/qt.py

@@ -201,6 +201,7 @@ class QtPluginBase(object):
             handler.button = button
             keystore.handler = handler
             keystore.thread = TaskThread(window, window.on_error)
+            self.add_show_address_on_hw_device_button_for_receive_addr(wallet, keystore, window)
             # Trigger a pairing
             keystore.thread.add(partial(self.get_client, keystore))
 
@@ -218,3 +219,13 @@ class QtPluginBase(object):
 
     def show_settings_dialog(self, window, keystore):
         device_id = self.choose_device(window, keystore)
+
+    def add_show_address_on_hw_device_button_for_receive_addr(self, wallet, keystore, main_window):
+        plugin = keystore.plugin
+        receive_address_e = main_window.receive_address_e
+
+        def show_address():
+            addr = receive_address_e.text()
+            keystore.thread.add(partial(plugin.show_address, wallet, addr, keystore))
+        # TODO icon
+        receive_address_e.addButton(":icons/tab_console.png", show_address, _("Show on {}").format(plugin.device))