Added customized button and fixed tests.

src/superorganism/gui/app.txt

@@ -46,7 +46,7 @@ widgets on the screen.
 
 We can also change the statusbar text:
 
->>> view.statusmsg = u'Foobar'
+>>> view.widget.set_statusmsg(u'Foobar')
 >>> view.render()
 (helpbar) Topbar
 ...

src/superorganism/gui/interfaces.py

@@ -101,6 +101,13 @@ def set(value):
         """Set the widget text to value."""
 
 
+class IButton(zope.interface.Interface):
+    """Marker interface for a button."""
+
+    signals = zope.interface.Attribute(
+        "A list of signals associated with the button.")
+
+
 class ITextInputWidget(IFormWidget):
     """A text input widget providing a title and description, as well as
        an input field.

src/superorganism/gui/projects.py

@@ -22,12 +22,11 @@ def run(self):
 
             for key in keys:
                 self.widget.set_statusmsg('Key: %s' % key)
-                if (hasattr(widget, 'get_label') and\
-                    widget.get_label().startswith('Save') and key == 'q'):
-                    return zope.component.getMultiAdapter(
-                        (self.context.__parent__, self.screen),
-                        name='dashboard').run()
-
+                if superorganism.gui.interfaces.IButton.providedBy(widget):
+                    if (widget.get_label().startswith('Save') and key == 'enter'):
+                        return zope.component.getMultiAdapter(
+                            (self.context.__parent__, self.screen),
+                            name='dashboard').run()
                 self.widget.keypress(size, key)
 
     def update_widgets(self):
@@ -40,6 +39,10 @@ def get_form_contents(self):
             widgets.append(
                 zope.component.getMultiAdapter(
                     (field, self), superorganism.gui.interfaces.IFormWidget))
-        button = urwid.Button('Save')
-        widgets.append(button)
+        widgets.append(
+            urwid.GridFlow(
+                [superorganism.gui.widgets.DialogButton("Save"),
+                 superorganism.gui.widgets.DialogButton("Cancel")],
+                10, 3, 1, 'center'
+            ))
         return urwid.SimpleListWalker(widgets)

src/superorganism/gui/projects.txt

@@ -40,10 +40,11 @@ Paul presses the "p" key which opens the dialog to create a new project:
 >>> view = zope.component.getMultiAdapter(
 ...     (project, screen), name='newproject')
 >>> view.render()
+(helpbar) Topbar
 (focus) Projecttitle
 ...
-Project Description
-Versions
+(background) Project Description
+(background) Versions
 ...
 
 He fills out the fields about `title` (Adult Care) and a `description`.

src/superorganism/gui/view.py

@@ -14,3 +14,7 @@ def render(self):
         size = self.screen.get_cols_rows()
         canvas = self.widget.render(size, focus=True)
         self.screen.draw_screen(size, canvas)
+
+    def update_widgets(self):
+        # XXX implemented in subclasses
+        pass

src/superorganism/gui/widgets.py

@@ -4,6 +4,26 @@
 import zope.schema.interfaces
 
 
+class DialogButton(urwid.Button):
+
+    zope.interface.implements(superorganism.gui.interfaces.IButton)
+
+    def __init__(self, label, on_press=None, user_data=None):
+        self._label = urwid.SelectableIcon("", 0)
+        self._w = urwid.AttrMap(urwid.Columns([
+            ('fixed', 1, urwid.Text("<")),
+            self._label,
+            ('fixed', 1, urwid.Text(">"))],
+            dividechars=1), 'button', 'focus')
+
+        # The old way of listening for a change was to pass the callback
+        # in to the constructor.  Just convert it to the new way:
+        if on_press:
+            connect_signal(self, 'click', on_press, user_data)
+
+        self.set_label(label)
+
+
 class BaseFormWidget(urwid.WidgetWrap):
 
     def __init__(self, field, form):