trim EOL (end-of-line) spaces on source files

19 files changed, 90 insertions, 90 deletions

diff --git a/src/sugar/graphics/alert.py b/src/sugar/graphics/alert.py
index 2c3c4ca..b108d9d 100644
--- a/src/sugar/graphics/alert.py
+++ b/src/sugar/graphics/alert.py
@@ -50,7 +50,7 @@ import gtk
 import gobject
 import hippo
 import math
-        
+
 from sugar.graphics import style
 from sugar.graphics.icon import Icon
 
@@ -111,24 +111,24 @@ class Alert(gtk.EventBox):
         self._msg_label.set_alignment(0, 0.5)
         self._msg_box.pack_start(self._msg_label, False)
         self._hbox.pack_start(self._msg_box, False)
-        
+
         self._buttons_box = gtk.HButtonBox()
         self._buttons_box.set_layout(gtk.BUTTONBOX_END)
         self._buttons_box.set_spacing(style.DEFAULT_SPACING)
         self._hbox.pack_start(self._buttons_box)
-        
+
         gobject.GObject.__init__(self, **kwargs)
 
-        self.set_visible_window(True)        
-        self.add(self._hbox)        
+        self.set_visible_window(True)
+        self.add(self._hbox)
         self._title_label.show()
         self._msg_label.show()
         self._buttons_box.show()
         self._msg_box.show()
         self._hbox.show()
         self.show()
-        
-    def do_set_property(self, pspec, value):        
+
+    def do_set_property(self, pspec, value):
         """
         Set alert property
 
@@ -299,21 +299,21 @@ class _TimeoutIcon(hippo.CanvasText, hippo.CanvasItem):
 
     def __init__(self, **kwargs):
         hippo.CanvasText.__init__(self, **kwargs)
-        
+
         self.props.orientation = hippo.ORIENTATION_HORIZONTAL
         self.props.border_left = style.DEFAULT_SPACING
         self.props.border_right = style.DEFAULT_SPACING
-            
+
     def do_paint_background(self, cr, damaged_box):
         [width, height] = self.get_allocation()
-        
+
         xval = width * 0.5
         yval = height * 0.5
-        radius = min(width * 0.5, height * 0.5)         
-        
+        radius = min(width * 0.5, height * 0.5)
+
         hippo.cairo_set_source_rgba32(cr, self.props.background_color)
-        cr.arc(xval, yval, radius, 0, 2*math.pi)        
-        cr.fill_preserve()    
+        cr.arc(xval, yval, radius, 0, 2*math.pi)
+        cr.fill_preserve()
 
 
 class TimeoutAlert(Alert):
@@ -362,22 +362,22 @@ class TimeoutAlert(Alert):
         Alert.__init__(self, **kwargs)
 
         self._timeout = timeout
-        
+
         icon = Icon(icon_name='dialog-cancel')
         self.add_button(gtk.RESPONSE_CANCEL, _('Cancel'), icon)
         icon.show()
-        
+
         self._timeout_text = _TimeoutIcon(
             text=self._timeout,
             color=style.COLOR_BUTTON_GREY.get_int(),
-            background_color=style.COLOR_WHITE.get_int())    
+            background_color=style.COLOR_WHITE.get_int())
         canvas = hippo.Canvas()
         canvas.set_root(self._timeout_text)
-        canvas.show()                       
+        canvas.show()
         self.add_button(gtk.RESPONSE_OK, _('Continue'), canvas)
 
         gobject.timeout_add_seconds(1, self.__timeout)
-        
+
     def __timeout(self):
         self._timeout -= 1
         self._timeout_text.props.text = self._timeout
diff --git a/src/sugar/graphics/animator.py b/src/sugar/graphics/animator.py
index 5d5b355..51c8ac3 100644
--- a/src/sugar/graphics/animator.py
+++ b/src/sugar/graphics/animator.py
@@ -31,7 +31,7 @@ class Animator(gobject.GObject):
         'completed': (gobject.SIGNAL_RUN_FIRST,
                       gobject.TYPE_NONE, ([])),
     }
-    
+
     def __init__(self, duration, fps=20, easing=EASE_OUT_EXPO):
         gobject.GObject.__init__(self)
         self._animations = []
diff --git a/src/sugar/graphics/canvastextview.py b/src/sugar/graphics/canvastextview.py
index 481248d..4a2aaa4 100644
--- a/src/sugar/graphics/canvastextview.py
+++ b/src/sugar/graphics/canvastextview.py
@@ -29,11 +29,11 @@ class CanvasTextView(hippo.CanvasWidget):
         self.text_view_widget.props.right_margin = style.DEFAULT_SPACING
         self.text_view_widget.props.wrap_mode = gtk.WRAP_WORD
         self.text_view_widget.show()
-        
+
         # TODO: These fields should expand vertically instead of scrolling
         scrolled_window = gtk.ScrolledWindow()
         scrolled_window.set_shadow_type(gtk.SHADOW_OUT)
         scrolled_window.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
         scrolled_window.add(self.text_view_widget)
-        
+
         self.props.widget = scrolled_window
diff --git a/src/sugar/graphics/colorbutton.py b/src/sugar/graphics/colorbutton.py
index a5c7f0a..f69691c 100644
--- a/src/sugar/graphics/colorbutton.py
+++ b/src/sugar/graphics/colorbutton.py
@@ -29,7 +29,7 @@ from sugar.graphics.palette import Palette, ToolInvoker, WidgetInvoker
 _ = lambda msg: gettext.dgettext('sugar-toolkit', msg)
 
 def get_svg_color_string(color):
-    return '#%.2X%.2X%.2X' % (color.red / 257, color.green / 257, 
+    return '#%.2X%.2X%.2X' % (color.red / 257, color.green / 257,
                               color.blue / 257)
 
 class _ColorButton(gtk.Button):
@@ -40,11 +40,11 @@ class _ColorButton(gtk.Button):
     As a preview an sugar.graphics.Icon is used. The fill color will be set to
     the current color, and the stroke color is set to the font color.
     """
-    
+
     __gtype_name__ = 'SugarColorButton'
     __gsignals__ = { 'color-set' : (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                                      tuple())}
-    
+
     def __init__(self, **kwargs):
         self._title = _('Choose a color')
         self._color = gtk.gdk.Color(0, 0, 0)
@@ -92,10 +92,10 @@ class _ColorButton(gtk.Button):
 
     def __palette_color_set_cb(self, palette):
         self.emit('color-set')
-    
+
     def __palette_color_changed(self, palette, pspec):
         self.color = self._palette.color
-    
+
     def do_style_set(self, previous_style):
         self._preview.stroke_color = \
             get_svg_color_string(self.style.fg[gtk.STATE_NORMAL])
@@ -111,12 +111,12 @@ class _ColorButton(gtk.Button):
 
     def set_color(self, color):
         assert isinstance(color, gtk.gdk.Color)
-        
+
         if self._color.red == color.red and \
            self._color.green == color.green and \
            self._color.blue == color.blue:
             return
-        
+
         self._color = gtk.gdk.Color(color.red, color.green, color.blue)
         self._preview.fill_color = get_svg_color_string(self._color)
         if self._palette:
@@ -201,9 +201,9 @@ class _ColorButton(gtk.Button):
         red = self._color.red / 257
         green = self._color.green / 257
         blue = self._color.blue / 257
-        
+
         pixbuf.fill(red << 24 + green << 16 + blue << 8 + 0xff)
-        
+
         context.set_icon_pixbuf(pixbuf)
 
     def __drag_data_get_cb(self, widget, context, selection_data, info, time):
@@ -258,7 +258,7 @@ class _ColorPalette(Palette):
         self._picker_hbox.pack_start(self._swatch_tray)
         self._picker_hbox.pack_start(gtk.VSeparator(),
                                      padding=style.DEFAULT_SPACING)
-        
+
         self._chooser_table = gtk.Table(3, 2)
         self._chooser_table.set_col_spacing(0, style.DEFAULT_PADDING)
 
@@ -271,7 +271,7 @@ class _ColorPalette(Palette):
             self._create_color_scale(_('Blue'), self._BLUE, 2))
 
         self._picker_hbox.add(self._chooser_table)
-        
+
         self._picker_hbox.show_all()
 
         self._build_swatches()
@@ -300,7 +300,7 @@ class _ColorPalette(Palette):
 
         return scale
 
-        
+
 
     def _build_swatches(self):
         for child in self._swatch_tray.get_children():
@@ -370,12 +370,12 @@ class _ColorPalette(Palette):
             return
 
         self._color = color.copy()
-        
+
         if self._scales:
             self._scales[self._RED].set_value(self._color.red / 65535.0)
             self._scales[self._GREEN].set_value(self._color.green / 65535.0)
             self._scales[self._BLUE].set_value(self._color.blue / 65535.0)
-        
+
         self.notify('color')
 
     def get_color(self):
diff --git a/src/sugar/graphics/combobox.py b/src/sugar/graphics/combobox.py
index 4e094ab..fe18087 100644
--- a/src/sugar/graphics/combobox.py
+++ b/src/sugar/graphics/combobox.py
@@ -23,7 +23,7 @@ import gobject
 import gtk
 
 class ComboBox(gtk.ComboBox):
-    __gtype_name__ = 'SugarComboBox'    
+    __gtype_name__ = 'SugarComboBox'
 
     def __init__(self):
         gtk.ComboBox.__init__(self)
@@ -129,7 +129,7 @@ class ComboBox(gtk.ComboBox):
         None
 
         """
-        self._model.append([0, None, None, True])    
+        self._model.append([0, None, None, True])
 
     def get_active_item(self):
         """
diff --git a/src/sugar/graphics/icon.py b/src/sugar/graphics/icon.py
index 6f5a167..cc6c8d2 100644
--- a/src/sugar/graphics/icon.py
+++ b/src/sugar/graphics/icon.py
@@ -337,10 +337,10 @@ class Icon(gtk.Image):
         if self._buffer.file_name != self.props.file:
             self._buffer.file_name = self.props.file
 
-        if self.props.pixel_size == -1:    
+        if self.props.pixel_size == -1:
             width, height = gtk.icon_size_lookup(self.props.icon_size)
         else:
-            width = height = self.props.pixel_size 
+            width = height = self.props.pixel_size
         if self._buffer.width != width or self._buffer.height != height:
             self._buffer.width = width
             self._buffer.height = height
@@ -917,7 +917,7 @@ class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
 
     def get_palette_invoker(self):
         return self._palette_invoker
-    
+
     def set_palette_invoker(self, palette_invoker):
         self._palette_invoker.detach()
         self._palette_invoker = palette_invoker
@@ -929,7 +929,7 @@ class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
         from sugar.graphics.palette import Palette
 
         self.set_palette(Palette(text))
-    
+
     palette = property(get_palette, set_palette)
 
 class CellRendererIcon(gtk.GenericCellRenderer):
@@ -1019,7 +1019,7 @@ class CellRendererIcon(gtk.GenericCellRenderer):
         if self._buffer.background_color != value:
             self._buffer.background_color = value
 
-    background_color = gobject.property(type=object, 
+    background_color = gobject.property(type=object,
                                         setter=set_background_color)
 
     def set_size(self, value):
diff --git a/src/sugar/graphics/notebook.py b/src/sugar/graphics/notebook.py
index 4965b24..65d3522 100644
--- a/src/sugar/graphics/notebook.py
+++ b/src/sugar/graphics/notebook.py
@@ -17,7 +17,7 @@
 
 """Notebook class
 
-This class create a gtk.Notebook() widget supporting 
+This class create a gtk.Notebook() widget supporting
 a close button in every tab when the 'can-close-tabs' gproperty
 is enabled (True)
 
@@ -38,11 +38,11 @@ class Notebook(gtk.Notebook):
 
     def __init__(self, **kwargs):
         # Initialise the Widget
-        #
-        #    Side effects: 
+
+        #    Side effects:
         #        Set the 'can-close-tabs' property using **kwargs
         #        Set True the scrollable notebook property
-        
+
         gobject.GObject.__init__(self, **kwargs)
 
         self._can_close_tabs = None
@@ -108,7 +108,7 @@ class Notebook(gtk.Notebook):
 
         tab_box.show_all()
         event_box.add(tab_box)
-        
+
         return event_box
 
     def add_page(self, text_label, widget):
@@ -130,16 +130,16 @@ class Notebook(gtk.Notebook):
         # Add a new page to the notebook
         if self._can_close_tabs:
             eventbox = self._create_custom_tab(text_label, widget)
-            self.append_page(widget, eventbox)		
+            self.append_page(widget, eventbox)
         else:
             self.append_page(widget, gtk.Label(text_label))
-            
+
         pages = self.get_n_pages()
 
         # Set the new page
         self.set_current_page(pages - 1)
         self.show_all()
-        
+
         return True
 
     def _close_page(self, button, child):
diff --git a/src/sugar/graphics/objectchooser.py b/src/sugar/graphics/objectchooser.py
index aa46738..582ac62 100644
--- a/src/sugar/graphics/objectchooser.py
+++ b/src/sugar/graphics/objectchooser.py
@@ -56,7 +56,7 @@ class ObjectChooser(object):
         self._chooser_id = None
         self._response_code = gtk.RESPONSE_NONE
         self._what_filter = what_filter
-        
+
     def run(self):
         self._object_id = None
 
diff --git a/src/sugar/graphics/palette.py b/src/sugar/graphics/palette.py
index bb2c655..f613306 100644
--- a/src/sugar/graphics/palette.py
+++ b/src/sugar/graphics/palette.py
@@ -45,7 +45,7 @@ class Palette(PaletteWindow):
 
     __gtype_name__ = 'SugarPalette'
 
-    # DEPRECATED: label is passed with the primary-text property, accel_path 
+    # DEPRECATED: label is passed with the primary-text property, accel_path
     # is set via the invoker property, and menu_after_content is not used
     def __init__(self, label=None, accel_path=None, menu_after_content=False,
                  text_maxlen=60, **kwargs):
@@ -67,9 +67,9 @@ class Palette(PaletteWindow):
         primary_box.pack_start(self._icon_box, expand=False)
 
         labels_box = gtk.VBox()
-        self._label_alignment = gtk.Alignment(xalign=0, yalign=0.5, 
+        self._label_alignment = gtk.Alignment(xalign=0, yalign=0.5,
                                               xscale=1, yscale=0.33)
-        self._label_alignment.set_padding(0, 0, style.DEFAULT_SPACING, 
+        self._label_alignment.set_padding(0, 0, style.DEFAULT_SPACING,
                                           style.DEFAULT_SPACING)
         self._label_alignment.add(labels_box)
         self._label_alignment.show()
@@ -182,7 +182,7 @@ class Palette(PaletteWindow):
 
         if self._invoker is not None:
             self._update_full_request()
-    
+
         PaletteWindow.popup(self, immediate)
 
         if state is None:
@@ -194,7 +194,7 @@ class Palette(PaletteWindow):
     def on_enter(self, event):
         PaletteWindow.on_enter(self, event)
         self._secondary_anim.start()
-        
+
     def _add_menu(self):
         self._menu_box = gtk.VBox()
         self._secondary_box.pack_start(self._menu_box)
diff --git a/src/sugar/graphics/palettegroup.py b/src/sugar/graphics/palettegroup.py
index e95b5aa..d3bccb5 100644
--- a/src/sugar/graphics/palettegroup.py
+++ b/src/sugar/graphics/palettegroup.py
@@ -76,7 +76,7 @@ class Group(gobject.GObject):
 
     def popdown(self):
         for palette in self._palettes:
-            if palette.is_up(): 
+            if palette.is_up():
                 palette.popdown(immediate=True)
 
     def _palette_popup_cb(self, palette):
diff --git a/src/sugar/graphics/palettewindow.py b/src/sugar/graphics/palettewindow.py
index 96e4da1..d3fe2cb 100644
--- a/src/sugar/graphics/palettewindow.py
+++ b/src/sugar/graphics/palettewindow.py
@@ -47,7 +47,7 @@ def _calculate_gap(a, b):
         gap_side = gtk.POS_TOP
     else:
         gap = False
-    
+
     if gap:
         if gap_side == gtk.POS_BOTTOM or gap_side == gtk.POS_TOP:
             gap_start = min(a.width, max(0, b.x - a.x))
@@ -181,7 +181,7 @@ class PaletteWindow(gtk.Window):
         self.set_group_id(None)
 
     def set_invoker(self, invoker):
-        for hid in self._invoker_hids[:]: 
+        for hid in self._invoker_hids[:]:
             self._invoker.disconnect(hid)
             self._invoker_hids.remove(hid)
 
@@ -212,7 +212,7 @@ class PaletteWindow(gtk.Window):
         immediate = False
 
         if self.is_up():
-            self._popdown_anim.stop() 
+            self._popdown_anim.stop()
             return
 
         if self._group_id:
@@ -629,7 +629,7 @@ class Invoker(gobject.GObject):
 
     def get_palette(self):
         return self._palette
-    
+
     def set_palette(self, palette):
         if self._palette:
             self._palette.props.invoker = None
@@ -787,7 +787,7 @@ class CanvasInvoker(Invoker):
             return gtk.gdk.Rectangle(x, y, width, height)
         else:
             return gtk.gdk.Rectangle()
-        
+
     def __motion_notify_event_cb(self, button, event):
         if event.detail == hippo.MOTION_DETAIL_ENTER:
             self.notify_mouse_enter()
diff --git a/src/sugar/graphics/radiotoolbutton.py b/src/sugar/graphics/radiotoolbutton.py
index 11f962d..7264232 100644
--- a/src/sugar/graphics/radiotoolbutton.py
+++ b/src/sugar/graphics/radiotoolbutton.py
@@ -154,7 +154,7 @@ class RadioToolButton(gtk.RadioToolButton):
 
     def get_palette_invoker(self):
         return self._palette_invoker
-    
+
     def set_palette_invoker(self, palette_invoker):
         self._palette_invoker.detach()
         self._palette_invoker = palette_invoker
diff --git a/src/sugar/graphics/roundbox.py b/src/sugar/graphics/roundbox.py
index 28644bc..b909c74 100644
--- a/src/sugar/graphics/roundbox.py
+++ b/src/sugar/graphics/roundbox.py
@@ -35,13 +35,13 @@ class CanvasRoundBox(hippo.CanvasBox, hippo.CanvasItem):
 
         # TODO: we should calculate radius depending on the height of the box.
         self._radius = style.zoom(10)
-        
+
         self.props.orientation = hippo.ORIENTATION_HORIZONTAL
         self.props.border = self._BORDER_DEFAULT
         self.props.border_left = self._radius
         self.props.border_right = self._radius
         self.props.border_color = style.COLOR_BLACK.get_int()
-            
+
     def do_paint_background(self, cr, damaged_box):
         [width, height] = self.get_allocation()
 
diff --git a/src/sugar/graphics/toggletoolbutton.py b/src/sugar/graphics/toggletoolbutton.py
index 9bb2f58..0aeb59c 100644
--- a/src/sugar/graphics/toggletoolbutton.py
+++ b/src/sugar/graphics/toggletoolbutton.py
@@ -59,7 +59,7 @@ class ToggleToolButton(gtk.ToggleToolButton):
 
     def get_palette_invoker(self):
         return self._palette_invoker
-    
+
     def set_palette_invoker(self, palette_invoker):
         self._palette_invoker.detach()
         self._palette_invoker = palette_invoker
@@ -69,7 +69,7 @@ class ToggleToolButton(gtk.ToggleToolButton):
 
     def set_tooltip(self, text):
         self.set_palette(Palette(text))
-    
+
     def do_expose_event(self, event):
         allocation = self.get_allocation()
         child = self.get_child()
@@ -85,5 +85,5 @@ class ToggleToolButton(gtk.ToggleToolButton):
                                   allocation.width, allocation.height)
 
         gtk.ToggleToolButton.do_expose_event(self, event)
-    
+
     palette = property(get_palette, set_palette)
diff --git a/src/sugar/graphics/toolbarbox.py b/src/sugar/graphics/toolbarbox.py
index fb35bb1..266e6be 100644
--- a/src/sugar/graphics/toolbarbox.py
+++ b/src/sugar/graphics/toolbarbox.py
@@ -27,7 +27,7 @@ from sugar.graphics import palettegroup
 class ToolbarButton(ToolButton):
     def __init__(self, page=None, **kwargs):
         ToolButton.__init__(self, **kwargs)
-        
+
         self.page_widget = None
 
         self.set_page(page)
diff --git a/src/sugar/graphics/toolbox.py b/src/sugar/graphics/toolbox.py
index 1cfbe93..47a311d 100644
--- a/src/sugar/graphics/toolbox.py
+++ b/src/sugar/graphics/toolbox.py
@@ -36,7 +36,7 @@ class Toolbox(gtk.VBox):
 
     def __init__(self):
         gtk.VBox.__init__(self)
-        
+
         self._notebook = gtk.Notebook()
         self._notebook.set_tab_pos(gtk.POS_BOTTOM)
         self._notebook.set_show_border(False)
@@ -55,12 +55,12 @@ class Toolbox(gtk.VBox):
                     border_bottom=style.LINE_WIDTH)
         self._separator.set_root(box)
         self.pack_start(self._separator, False)
-        
+
         self._notebook.connect('notify::page', self._notify_page_cb)
 
     def _notify_page_cb(self, notebook, pspec):
         self.emit('current-toolbar-changed', notebook.props.page)
-        
+
     def add_toolbar(self, name, toolbar):
         label = gtk.Label(name)
         width, height_ = label.size_request()
@@ -68,7 +68,7 @@ class Toolbox(gtk.VBox):
         label.set_alignment(0.0, 0.5)
 
         event_box = gtk.EventBox()
-        
+
         alignment = gtk.Alignment(0.0, 0.0, 1.0, 1.0)
         alignment.set_padding(0, 0, style.TOOLBOX_HORIZONTAL_PADDING,
                               style.TOOLBOX_HORIZONTAL_PADDING)
@@ -83,7 +83,7 @@ class Toolbox(gtk.VBox):
         if self._notebook.get_n_pages() > 1:
             self._notebook.set_show_tabs(True)
             self._separator.show()
-                    
+
     def remove_toolbar(self, index):
         self._notebook.remove_page(index)
 
@@ -96,6 +96,6 @@ class Toolbox(gtk.VBox):
 
     def get_current_toolbar(self):
         return self._notebook.get_current_page()
-    
+
     current_toolbar = property(get_current_toolbar, set_current_toolbar)
 
diff --git a/src/sugar/graphics/toolbutton.py b/src/sugar/graphics/toolbutton.py
index 047df06..7def0ff 100644
--- a/src/sugar/graphics/toolbutton.py
+++ b/src/sugar/graphics/toolbutton.py
@@ -128,7 +128,7 @@ class ToolButton(gtk.ToolButton):
 
     def get_palette_invoker(self):
         return self._palette_invoker
-    
+
     def set_palette_invoker(self, palette_invoker):
         self._palette_invoker.detach()
         self._palette_invoker = palette_invoker
diff --git a/src/sugar/graphics/tray.py b/src/sugar/graphics/tray.py
index 5df7170..8b0abe7 100644
--- a/src/sugar/graphics/tray.py
+++ b/src/sugar/graphics/tray.py
@@ -64,7 +64,7 @@ class _TrayViewport(gtk.Viewport):
             adj = self.get_vadjustment()
         adj.connect('changed', self._adjustment_changed_cb)
         adj.connect('value-changed', self._adjustment_changed_cb)
-            
+
     def scroll(self, direction):
         if direction == _PREVIOUS_PAGE:
             self._scroll_previous()
@@ -447,7 +447,7 @@ class TrayIcon(gtk.ToolItem):
 
     def get_palette_invoker(self):
         return self._palette_invoker
-    
+
     def set_palette_invoker(self, palette_invoker):
         self._palette_invoker.detach()
         self._palette_invoker = palette_invoker
diff --git a/src/sugar/graphics/window.py b/src/sugar/graphics/window.py
index 4b25bc0..6ab6ee1 100644
--- a/src/sugar/graphics/window.py
+++ b/src/sugar/graphics/window.py
@@ -86,12 +86,12 @@ class Window(gtk.Window):
         self.connect('realize', self.__window_realize_cb)
         self.connect('window-state-event', self.__window_state_event_cb)
         self.connect('key-press-event', self.__key_press_cb)
-        
+
         self._toolbar_box = None
         self._alerts = []
         self._canvas = None
         self.tray = None
-        
+
         self._vbox = gtk.VBox()
         self._hbox = gtk.HBox()
         self._vbox.pack_start(self._hbox)
@@ -100,7 +100,7 @@ class Window(gtk.Window):
         self._event_box = gtk.EventBox()
         self._hbox.pack_start(self._event_box)
         self._event_box.show()
-        self._event_box.add_events(gtk.gdk.POINTER_MOTION_HINT_MASK 
+        self._event_box.add_events(gtk.gdk.POINTER_MOTION_HINT_MASK
                                    | gtk.gdk.POINTER_MOTION_MASK)
         self._event_box.connect('motion-notify-event', self.__motion_notify_cb)
 
@@ -120,7 +120,7 @@ class Window(gtk.Window):
 
         if canvas:
             self._event_box.add(canvas)
-        
+
         self._canvas = canvas
 
     def get_canvas(self):
@@ -144,16 +144,16 @@ class Window(gtk.Window):
 
     def set_tray(self, tray, position):
         if self.tray:
-            box = self.tray.get_parent() 
+            box = self.tray.get_parent()
             box.remove(self.tray)
-                
+
         if position == gtk.POS_LEFT:
             self._hbox.pack_start(tray, False)
         elif position == gtk.POS_RIGHT:
             self._hbox.pack_end(tray, False)
         elif position == gtk.POS_BOTTOM:
             self._vbox.pack_end(tray, False)
-                    
+
         self.tray = tray
 
     def add_alert(self, alert):
@@ -162,14 +162,14 @@ class Window(gtk.Window):
             self._vbox.pack_start(alert, False)
             if self._toolbar_box is not None:
                 self._vbox.reorder_child(alert, 1)
-            else:   
+            else:
                 self._vbox.reorder_child(alert, 0)
-                
+
     def remove_alert(self, alert):
         if alert in self._alerts:
             self._alerts.remove(alert)
             # if the alert is the visible one on top of the queue
-            if alert.get_parent() is not None:                            
+            if alert.get_parent() is not None:
                 self._vbox.remove(alert)
                 if len(self._alerts) >= 1:
                     self._vbox.pack_start(self._alerts[0], False)
@@ -177,7 +177,7 @@ class Window(gtk.Window):
                         self._vbox.reorder_child(self._alerts[0], 1)
                     else:
                         self._vbox.reorder_child(self._alert[0], 0)
-                    
+
     def __window_realize_cb(self, window):
         group = gtk.Window()
         group.realize()