console_conf/views: add recovery chooser views

Add views used by recovery chooser:
- welcome - recovery chooser specific message
- chooser - list of seed systems and actions
- confirm - where user confirms the selected action

Signed-off-by: Maciej Borzecki <maciej.zenon.borzecki@canonical.com>

console_conf/ui/views/__init__.py

@@ -17,9 +17,14 @@
 
 from .identity import IdentityView
 from .login import LoginView
-from .welcome import WelcomeView
+from .welcome import WelcomeView, ChooserWelcomeView
+from .chooser import ChooserView, ChooserConfirmView
+
 __all__ = [
-    'IdentityView',
-    'LoginView',
-    'WelcomeView',
+    "IdentityView",
+    "LoginView",
+    "WelcomeView",
+    "ChooserWelcomeView",
+    "ChooserView",
+    "ChooserConfirmView",
 ]

console_conf/ui/views/chooser.py

@@ -0,0 +1,142 @@
+# Copyright 2015 Canonical, Ltd.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" Chooser
+
+Chooser provides a view with recovery chooser actions.
+
+"""
+import logging
+
+from urwid import (
+    connect_signal,
+    Text,
+    )
+from subiquitycore.ui.buttons import (
+    danger_btn,
+    reset_btn,
+    )
+from subiquitycore.ui.actionmenu import (
+    Action,
+    ActionMenu,
+    )
+from subiquitycore.ui.container import Pile
+from subiquitycore.ui.utils import (
+    button_pile,
+    screen,
+    make_action_menu_row,
+    Color,
+    )
+from subiquitycore.ui.table import TableRow, TablePile
+from subiquitycore.view import BaseView
+
+
+log = logging.getLogger("console_conf.views.chooser")
+
+
+class ChooserView(BaseView):
+    title = "Ubuntu Core"
+    excerpt = ("Select one of available recovery systems and a desired "
+               "action to execute.")
+
+    def __init__(self, controller, systems):
+        self.controller = controller
+
+        heading_table = TablePile([
+            TableRow([
+                Color.info_minor(Text(header)) for header in [
+                    "LABEL", "MODEL", "PUBLISHER",
+                    ]
+                ])
+            ],
+            spacing=2)
+
+        trows = []
+        for s in systems:
+            actions = []
+            log.debug('actions: %s', s.actions)
+            for act in s.actions:
+                actions.append(Action(label=act.title,
+                                      value=act,
+                                      enabled=True))
+            menu = ActionMenu(actions)
+            connect_signal(menu, 'action', self._system_action, s)
+            srow = make_action_menu_row([
+                Text(s.label),
+                Text(s.model.display_name),
+                Text(s.brand.display_name),
+                menu,
+            ], menu)
+            trows.append(srow)
+
+        systems_table = TablePile(trows, spacing=2)
+        systems_table.bind(heading_table)
+        rows = [
+            Pile([heading_table, systems_table]),
+        ]
+
+        buttons = [
+            reset_btn("ABORT", on_press=self.abort),
+        ]
+
+        super().__init__(screen(
+            rows=rows,
+            buttons=button_pile(buttons),
+            focus_buttons=False,
+            excerpt=self.excerpt))
+
+    def _system_action(self, sender, action, system):
+        self.controller.select(system, action)
+
+    def abort(self, result):
+        self.controller.cancel()
+
+
+class ChooserConfirmView(BaseView):
+    title = "Ubuntu Core"
+    excerpt = ("Summary of the selected action.")
+
+    def __init__(self, controller, selection):
+        self.controller = controller
+
+        buttons = [
+            danger_btn("CONFIRM", on_press=self.confirm),
+            reset_btn("ABORT", on_press=self.abort),
+        ]
+        using_summary = "System seed of device {} version {} from {}".format(
+                          selection.system.model.display_name,
+                          selection.system.label,
+                          selection.system.brand.display_name
+                      )
+        summary = [
+            TableRow([Text("Action:"), Color.info_error(Text(
+                selection.action.title))]),
+            TableRow([Text("Using:"), Text(using_summary)]),
+        ]
+        rows = [
+            Pile([Text("")]),
+            Pile([TablePile(summary)])
+        ]
+        super().__init__(screen(
+            rows=rows,
+            buttons=button_pile(buttons),
+            focus_buttons=False,
+            excerpt=self.excerpt))
+
+    def abort(self, result):
+        self.controller.cancel()
+
+    def confirm(self, result):
+        self.controller.confirm()

console_conf/ui/views/welcome.py

@@ -29,16 +29,28 @@ log = logging.getLogger("console_conf.views.welcome")
 
 class WelcomeView(BaseView):
     title = "Ubuntu Core"
-    excerpt = ("Configure the network and setup an administrator "
-               "account on this all-snap Ubuntu Core system.")
+    excerpt = (
+        "Configure the network and setup an administrator "
+        "account on this all-snap Ubuntu Core system."
+    )
 
     def __init__(self, controller):
         self.controller = controller
-        super().__init__(screen(
-            rows=[],
-            buttons=button_pile([done_btn("OK", on_press=self.confirm)]),
-            focus_buttons=True,
-            excerpt=self.excerpt))
+        super().__init__(
+            screen(
+                rows=[],
+                buttons=button_pile([done_btn("OK", on_press=self.confirm)]),
+                focus_buttons=True,
+                excerpt=self.excerpt,
+            )
+        )
 
     def confirm(self, result):
         self.controller.done()
+
+
+class ChooserWelcomeView(WelcomeView):
+    excerpt = (
+        "System recovery triggered. Proceed to select one of available "
+        "systems and execute a recovery action."
+    )