remove general clever escape handling

subiquity/controllers/filesystem.py

@@ -61,7 +61,6 @@ class FilesystemController(BaseController):
     def reset(self):
         log.info("Resetting Filesystem model")
         self.model.reset()
-        self.view_stack = []
         self.default()
 
     def cancel(self):

subiquity/ui/views/identity.py

@@ -102,14 +102,13 @@ class IdentityView(BaseView):
 
         self.form = IdentityForm()
         connect_signal(self.form, 'submit', self.done)
-        connect_signal(self.form, 'cancel', self.cancel)
 
         self.ssh_import_confirmed = True
 
         body = [
             Padding.center_90(self.form.as_rows(self)),
             Padding.line_break(""),
-            Padding.fixed_10(self.form.buttons),
+            Padding.fixed_10(self.form.buttons[0]),
         ]
         super().__init__(ListBox(body))
 
@@ -136,6 +135,3 @@ class IdentityView(BaseView):
 
         log.debug("User input: {}".format(result))
         self.controller.create_user(result)
-
-    def cancel(self, button):
-        self.controller.cancel()

subiquitycore/controller.py

@@ -20,14 +20,6 @@ import os
 
 log = logging.getLogger("subiquitycore.controller")
 
-def view(func):
-    n = func.__name__
-    def f(self, *args, **kw):
-        m = getattr(self, n)
-        self.view_stack.append((m, args, kw))
-        return func(self, *args, **kw)
-    return f
-
 
 class BaseController(ABC):
     """Base class for controllers."""
@@ -42,7 +34,6 @@ class BaseController(ABC):
         self.prober = common['prober']
         self.controllers = common['controllers']
         self.pool = common['pool']
-        self.view_stack = []
 
     def register_signals(self):
         """Defines signals associated with controller from model."""
@@ -51,11 +42,6 @@ class BaseController(ABC):
             signals.append((sig, getattr(self, cb)))
         self.signal.connect_signals(signals)
 
-    def prev_view(self):
-        self.view_stack.pop()
-        meth, args, kw = self.view_stack.pop()
-        meth(*args, **kw)
-
     def run_in_bg(self, func, callback):
         """Run func() in a thread and call callback on UI thread.