sugar-toolkit-gtk3/shell/view/frame/TopPanel.py

import goocanvas

from sugar.canvas.CanvasBox import CanvasBox
from sugar.canvas.IconItem import IconItem
from sugar.canvas.MenuIcon import MenuIcon
from sugar.canvas.Menu import Menu
from view.frame.MenuStrategy import MenuStrategy
import sugar

class ActivityMenu(Menu):
	ACTION_SHARE = 1

	def __init__(self, grid, activity_host):
		title = activity_host.get_title()
		Menu.__init__(self, grid, title)

		icon = IconItem(icon_name='stock-share')
		self.add_action(icon, ActivityMenu.ACTION_SHARE) 

class ActivityIcon(MenuIcon):
	def __init__(self, shell, activity_host):
		self._shell = shell
		self._activity_host = activity_host

		icon_name = activity_host.get_icon_name()
		icon_color = activity_host.get_icon_color()

		MenuIcon.__init__(self, shell.get_grid(), icon_name=icon_name,
						  color=icon_color)

		self.set_menu_strategy(MenuStrategy())

	def create_menu(self):
		menu = ActivityMenu(self._shell.get_grid(), self._activity_host)
		menu.connect('action', self._action_cb)
		return menu

	def _action_cb(self, menu, action):
		if action == ActivityMenu.ACTION_SHARE:
			shell_model = self._shell.get_model()
			activity = shell_model.get_current_activity()
			if activity != None:
				activity.share()

class TopPanel(goocanvas.Group):
	def __init__(self, shell):
		goocanvas.Group.__init__(self)

		self._shell = shell
		self._activity_icon = None

		grid = shell.get_grid()

		box = CanvasBox(grid, CanvasBox.HORIZONTAL, 1)
		grid.set_constraints(box, 5, 0)
		self.add_child(box)

		icon = IconItem(icon_name='stock-zoom-activity')
		icon.connect('clicked', self._level_clicked_cb, sugar.ZOOM_ACTIVITY)
		box.set_constraints(icon, 3, 3)
		box.add_child(icon)

		icon = IconItem(icon_name='stock-zoom-home')
		icon.connect('clicked', self._level_clicked_cb, sugar.ZOOM_HOME)
		box.set_constraints(icon, 3, 3)
		box.add_child(icon)

		icon = IconItem(icon_name='stock-zoom-friends')
		icon.connect('clicked', self._level_clicked_cb, sugar.ZOOM_FRIENDS)
		box.set_constraints(icon, 3, 3)
		box.add_child(icon)

		icon = IconItem(icon_name='stock-zoom-mesh')
		icon.connect('clicked', self._level_clicked_cb, sugar.ZOOM_MESH)
		box.set_constraints(icon, 3, 3)
		box.add_child(icon)

		self._box = box

		shell_model = shell.get_model()
		shell_model.connect('activity-changed', self._activity_changed_cb)
		self._set_current_activity(shell_model.get_current_activity())

	def _set_current_activity(self, activity):
		if self._activity_icon:
			self._box.remove_child(self._activity_icon)

		if activity:
			icon = ActivityIcon(self._shell, activity)
			self._box.set_constraints(icon, 3, 3)
			self._box.add_child(icon)
			self._activity_icon = icon
		else:
			self._activity_icon = None

	def _activity_changed_cb(self, shell_model, activity):
		self._set_current_activity(activity)

	def _level_clicked_cb(self, item, level):
		self._shell.set_zoom_level(level)