Split model/view in the activities donut.

Provide some infrastructure for Alt+Tab implementation.

shell/model/Makefile.am

@@ -6,4 +6,6 @@ sugar_PYTHON =			\
 	Invites.py		\
 	Owner.py		\
 	MeshModel.py		\
-	ShellModel.py
+	ShellModel.py		\
+	homeactivity.py		\
+	homemodel.py

shell/model/homeactivity.py

@@ -0,0 +1,32 @@
+# Copyright (C) 2006, Owen Williams.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+from sugar.graphics.canvasicon import CanvasIcon
+
+class HomeActivity:
+    def __init__(self, activity):
+        self._icon_name = activity.get_icon_name()
+        self._icon_color = activity.get_icon_color()
+        self._id = activity.get_id()
+        
+    def get_icon_name(self):
+        return self._icon_name
+    
+    def get_icon_color(self):
+        return self._icon_color
+        
+    def get_id(self):
+        return self._id

shell/model/homemodel.py

@@ -0,0 +1,69 @@
+# Copyright (C) 2006, Owen Williams.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+import gobject
+
+from sugar.graphics.canvasicon import CanvasIcon
+from sugar.graphics import style
+from model.homeactivity import HomeActivity
+
+class HomeModel(gobject.GObject):
+
+    __gsignals__ = {
+        'activity-added':   (gobject.SIGNAL_RUN_FIRST, 
+                             gobject.TYPE_NONE, 
+                            ([gobject.TYPE_PYOBJECT])),
+        'activity-removed': (gobject.SIGNAL_RUN_FIRST,
+                             gobject.TYPE_NONE,
+                            ([gobject.TYPE_PYOBJECT]))
+    }
+    
+    def __init__(self, shell):
+        gobject.GObject.__init__(self)
+        self._activities = []
+        self._shell = shell
+        
+        shell.connect('activity-opened', self.__activity_opened_cb)
+        shell.connect('activity-closed', self.__activity_closed_cb)
+        
+    def __iter__(self): 
+        return iter(self._activities)
+        
+    def __len__(self):
+        return len(self._activities)
+        
+    def __getitem__(self, i):
+        return self._activities[i]
+        
+    def __activity_opened_cb(self, model, activity):
+        self._add_activity(activity)
+
+    def __activity_closed_cb(self, model, activity):
+        self._remove_activity(activity)
+        
+    def _add_activity(self, activity):
+        h_activity = HomeActivity(activity)
+        self._activities.append(h_activity)
+        self.emit('activity-added', h_activity)
+
+    def _remove_activity(self, activity):
+        i = 0
+        for h_activity in self._activities:
+            if h_activity.get_id() == activity.get_id():
+                self.emit('activity-removed', self._activities[i])
+                del self._activities[i]
+                return
+            i += 1