From afd715bbe61e6b02d6de419b3bea1b075ba98e54 Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu@sugarlabs.org>
Date: Wed, 09 Sep 2009 14:15:50 +0000
Subject: Implement Alt key listening in the HomeWindow instead of using a global grab #1311

---
diff --git a/src/jarabe/desktop/homebox.py b/src/jarabe/desktop/homebox.py
index 85279ff..e79bf22 100644
--- a/src/jarabe/desktop/homebox.py
+++ b/src/jarabe/desktop/homebox.py
@@ -43,6 +43,9 @@ class HomeBox(gtk.VBox):
 
         gobject.GObject.__init__(self)
 
+        self.connect('visibility-notify-event',
+                     self.__visibility_notify_event_cb)
+
         self._favorites_view = favoritesview.FavoritesView()
         self._list_view = ActivitiesList()
 
@@ -144,6 +147,16 @@ class HomeBox(gtk.VBox):
     def set_resume_mode(self, resume_mode):
         self._favorites_view.set_resume_mode(resume_mode)
 
+    def __visibility_notify_event_cb(self, window, event):
+        if event.state == gtk.gdk.VISIBILITY_FULLY_OBSCURED:
+            return
+
+        screen_, x_, y_, modmask = gtk.gdk.display_get_default().get_pointer()
+        if modmask & gtk.gdk.MOD1_MASK:
+            self.set_resume_mode(False)
+        else:
+            self.set_resume_mode(True)
+
 class HomeToolbar(gtk.Toolbar):
     __gtype_name__ = 'SugarHomeToolbar'
 
diff --git a/src/jarabe/desktop/homewindow.py b/src/jarabe/desktop/homewindow.py
index c3b18de..c7e2b8f 100644
--- a/src/jarabe/desktop/homewindow.py
+++ b/src/jarabe/desktop/homewindow.py
@@ -49,8 +49,12 @@ class HomeWindow(gtk.Window):
 
         self.realize()
         self.window.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DESKTOP)
+
         self.connect('visibility-notify-event',
                      self._visibility_notify_event_cb)
+        self.connect('map-event', self.__map_event_cb)
+        self.connect('key-press-event', self.__key_press_event_cb)
+        self.connect('key-release-event', self.__key_release_event_cb)
 
         self._home_box = HomeBox()
         self._group_box = GroupBox()
@@ -86,6 +90,21 @@ class HomeWindow(gtk.Window):
         else:
             self._activate_view()
 
+    def __key_press_event_cb(self, window, event):
+        if event.keyval in [gtk.keysyms.Alt_L, gtk.keysyms.Alt_R]:
+            self._home_box.set_resume_mode(False)
+        return False
+
+    def __key_release_event_cb(self, window, event):
+        if event.keyval in [gtk.keysyms.Alt_L, gtk.keysyms.Alt_R]:
+            self._home_box.set_resume_mode(True)
+        return False
+
+    def __map_event_cb(self, window, event):
+        # have to make the desktop window active
+        # since metacity doesn't make it on startup
+        self.window.focus()
+
     def __zoom_level_changed_cb(self, **kwargs):
         old_level = kwargs['old_level']
         new_level = kwargs['new_level']
diff --git a/src/jarabe/view/keyhandler.py b/src/jarabe/view/keyhandler.py
index 26a7f26..e2e1395 100644
--- a/src/jarabe/view/keyhandler.py
+++ b/src/jarabe/view/keyhandler.py
@@ -35,7 +35,6 @@ from jarabe.view.tabbinghandler import TabbingHandler
 from jarabe.model.shell import ShellModel
 from jarabe import config
 from jarabe.journal import journalactivity
-from jarabe.desktop import homewindow
 
 _VOLUME_STEP = sound.VOLUME_STEP
 _VOLUME_MAX = 100
@@ -64,8 +63,6 @@ _actions_table = {
     'XF86Search'           : 'open_search',
     '<alt><shift>o'        : 'open_search',
     '<alt><shift>s'        : 'say_text',
-    'Alt_L'                : 'disable_resume_mode',
-    'Alt_R'                : 'disable_resume_mode',
 }
 
 SPEECH_DBUS_SERVICE = 'org.laptop.Speech'
@@ -201,13 +198,6 @@ class KeyHandler(object):
     def handle_open_search(self, event_time):
         journalactivity.get_journal().focus_search()
 
-    def handle_disable_resume_mode(self, event_time):
-        # TODO: KeyHandler should be a singleton and interested parties
-        # would listen to it. That way it wouldn't need to reference half
-        # of the shell classes.
-        home_box = homewindow.get_instance().get_home_box()
-        home_box.set_resume_mode(False)
-
     def _key_pressed_cb(self, grabber, keycode, state, event_time):
         key = grabber.get_key(keycode, state)
         logging.debug('_key_pressed_cb: %i %i %s', keycode, state, key)
@@ -242,23 +232,8 @@ class KeyHandler(object):
 
         return False
 
-    def _is_resume_mode_keycode(self, keycode):
-        """See if the physical key pressed matches one of the keys that modify
-        the resume mode of the favorites view.
-        """
-        keymap = gtk.gdk.keymap_get_default()
-        entries = keymap.get_entries_for_keycode(keycode)
-        for entry in entries:
-            if gtk.gdk.keyval_name(entry[0]) in ['Alt_L', 'Alt_R']:
-                return True
-        return False
-
     def _key_released_cb(self, grabber, keycode, state, event_time):
         logging.debug('_key_released_cb: %i %i' % (keycode, state))
-        if self._is_resume_mode_keycode(keycode):
-            home_box = homewindow.get_instance().get_home_box()
-            home_box.set_resume_mode(True)
-
         if self._tabbing_handler.is_tabbing():
             # We stop tabbing and switch to the new window as soon as the
             # modifier key is raised again.
--
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