Add like / dislike buttons

This patch adds buttons for liking and disliking a song.  I also use
this patch to add like / dislike icons.

ocarina/components/button.py

@@ -178,3 +178,52 @@ class VolumeButton(gtk.VolumeButton):
 	def changed(self, widget, value):
 		LS.controls.set_volume(value)
 		widget.resize()
+
+class LikeButton(gtk.ToggleButton):
+	def __init__(self):
+		gtk.ToggleButton.__init__(self)
+		img = gtk.image_new_from_file("images/thumbs_up.png")
+		img.show()
+		self.add(img)
+		self.set_active(liked==True)
+		self.set_relief(gtk.RELIEF_NONE)
+		self.t_id = self.connect("toggled", self.toggle)
+		invite("POSTLOAD", self.set_status)
+		invite("POSTSETLIKE", self.set_status)
+		self.show()
+
+	def set_status(self, *args):
+		print "setting status..."
+		self.disconnect(self.t_id)
+		self.set_active(LS.controls.get_like() == True)
+		self.t_id = self.connect("toggled", self.toggle)
+
+	def toggle(self, button):
+		status = self.get_active()
+		if status == False:
+			status = None
+		LS.controls.set_like(status)
+
+class DislikeButton(gtk.ToggleButton):
+	def __init__(self):
+		gtk.ToggleButton.__init__(self)
+		img = gtk.image_new_from_file("images/thumbs_down.png")
+		img.show()
+		self.add(img)
+		self.set_active(liked==False)
+		self.set_relief(gtk.RELIEF_NONE)
+		self.t_id = self.connect("toggled", self.toggle)
+		invite("POSTLOAD", self.set_status)
+		invite("POSTSETLIKE", self.set_status)
+		self.show()
+
+	def set_status(self, *args):
+		self.disconnect(self.t_id)
+		self.set_active(LS.controls.get_like() == False)
+		self.t_id = self.connect("toggled", self.toggle)
+
+	def toggle(self, button):
+		status = not self.get_active()
+		if status == True:
+			status = None
+		LS.controls.set_like(status)