Start work on models and ui

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>

subiquity/models/__init__.py

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+# Copyright 2015 Canonical, Ltd.
+
+""" Model Classes
+
+Model's represent the stateful data bound from
+input from the user.
+"""
+
+
+class Model:
+    """Base model"""
+
+    def to_json(self):
+        """Marshals the model to json"""
+        return NotImplementedError
+
+    def create(self):
+        """Creates model instance with validation"""
+        return NotImplementedError
+
+
+class Field:
+    """Base field class
+
+    New field types inherit this class, provides access to
+    validation checks and type definitions.
+    """
+    default_error_messages = {
+        'invalid_choice': ('Value %(value)r is not a valid choice.'),
+        'null': ('This field cannot be null.'),
+        'blank': ('This field cannot be blank.')
+    }
+
+    def __init__(self, name=None, blank=False, null=False):
+        self.name = name
+        self.blank, self.null = blank, null

subiquity/models/identity.py

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+# Copyright 2015 Canonical, Ltd.
+
+""" Identity Model
+
+Represents information related to identification, for example,
+User's first and last name, timezone, country, language preferences.
+"""
+
+from subiquity import models
+
+
+class UserModel(models.Model):
+    """ User class to support personal information
+    """
+    username = None
+    language = None
+    keyboard = None
+    timezone = None

subiquity/models/welcome.py

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+# Copyright 2015 Canonical, Ltd.
+
+""" Welcome Model
+
+Welcome model provides user with installation options
+
+"""
+
+from subiquity import models
+
+
+class WelcomeModel(models.Model):
+    """ Model representing installation type
+    """
+
+    install_type = None

subiquity/ui/__init__.py

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+# Copyright 2015 Canonical, Ltd.
+
+""" Subiquity UI Components """
+
+__version__ = "0.0.1"

subiquity/ui/anchors.py

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+# Copyright 2015 Canonical, Ltd.
+
+from urwid import WidgetWrap, AttrWrap, Pile, Text, Columns
+
+
+class Header(WidgetWrap):
+    """ Header Widget
+
+    This widget uses the style key `frame_header`
+
+    :param str title: Title of Header
+    :returns: Header()
+    """
+    def __init__(self, title="Ubuntu Server Installer"):
+        title = title
+        title_widget = AttrWrap(Text(title), "frame_header")
+        pile = Pile([title_widget])
+        super().__init__(Columns(pile))
+
+
+class Footer(WidgetWrap):
+    """ Footer widget
+
+    Style key: `frame_footer`
+
+    """
+    def __init__(self):
+        status = Pile([Text("")])
+        super().__init__(Columns(status))
+
+
+class Body(WidgetWrap):
+    """ Body widget
+    """
+    def __init__(self):
+        super().__init__(Text("Welcome to the Server Installation"))

subiquity/ui/frame.py

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+# Copyright 2015 Canonical, Ltd.
+
+""" Base Frame Widget """
+
+from urwid import Frame, WidgetWrap
+
+
+class Base(WidgetWrap):
+    def __init__(self, header, body, footer):
+        self.frame = Frame(body,
+                           header,
+                           footer)
+        super().__init__(self.frame)