First go at shared links (not functional)

activities/web/linkscontroller.py

@@ -0,0 +1,19 @@
+from sugar.presence import PresenceService
+
+class LinksController(object):
+	def __init__(self, service, model):
+		self._model = model
+
+		self._pservice = PresenceService.get_instance()
+
+		self._stream = Stream.new_from_service(service)
+		self._stream.set_data_listener(self._recv_message)
+		self._stream_writer = self._stream.new_writer()
+
+	def post_link(self, title, address):
+		self._stream_writer.write('test')
+
+	def _recv_message(self, address, msg):
+		buddy = self._pservice.get_buddy_by_address(address)
+		if buddy:
+			self._model.add_link(buddy, 'Test title', 'Test address')

activities/web/linksmodel.py

@@ -0,0 +1,35 @@
+import gobject
+
+class Link(object):
+	def __init__(self, buddy, title, url):
+		self.buddy = buddy
+		self.title = title
+		self.url = url
+
+class LinksModel(gobject.GObject):
+	__gsignals__ = {
+		'link-added':   (gobject.SIGNAL_RUN_FIRST,
+						 gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
+		'link-removed': (gobject.SIGNAL_RUN_FIRST,
+						 gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
+	}
+
+	def __init__(self):
+		gobject.GObject.__init__(self)
+		self._links = {}
+
+	def add_link(buddy, title, url):
+		link = Link(buddy, title, url)
+		self._links[(buddy.get_name(), url)] = link
+
+		self.emit('link-added', link)
+
+	def remove_link(buddy, url):
+		key = (buddy.get_name(), url)
+		if self._links.haskey(key):
+			link = self._links[key]
+			del self._links[key]
+			self.emit('link-removed', link)
+
+	def __iter__(self):
+		return self._links.values().__iter__()

activities/web/linksview.py

@@ -0,0 +1,36 @@
+import hippo
+
+from sugar.graphics.bubble import Bubble
+
+class LinksView(hippo.Canvas):
+	def __init__(self, model):
+		hippo.Canvas.__init__(self)
+
+		self._bubbles = {}
+
+		self._box = hippo.CanvasBox(background_color=0x414141ff)
+		self.set_root(self._box)
+
+		for link in model:
+			self._add_link(link)
+
+		model.connect('link_added', self._link_added_cb)
+		model.connect('link_removed', self._link_removed_cb)
+
+	def _add_link(self, link):
+		bubble = Bubble(color=link.buddy.get_color())
+		self._box.append(link)
+
+		self._bubbles[link] = bubble
+
+	def _remove_link(self, link):
+		bubble = self._bubbles[link]
+		self._box.remove(bubble)
+
+		del self._bubbles[link]
+
+	def _link_added_cb(self, model, link):
+		self._add_link(link)
+
+	def _link_removed_cb(self, model, link):
+		self._removed_link(link)

activities/web/toolbar.py

@@ -43,6 +43,18 @@ class Toolbar(gtk.Toolbar):
 		self.insert(address_item, -1)
 		address_item.show()
 
+		separator = gtk.SeparatorToolItem()
+		separator.set_draw(False)		
+		self.insert(separator, -1)
+		separator.show()
+
+		self._post = gtk.ToolButton()
+		self._post.props.sensitive = False
+		self._post.set_icon_name('stock-add')
+		self._post.connect("clicked", self._post_cb)
+		self.insert(self._post, -1)
+		self._post.show()
+
 		self._insert_spring()
 
 		self._embed = embed
@@ -53,6 +65,10 @@ class Toolbar(gtk.Toolbar):
 		self._embed.connect("notify::can-go-forward",
 							self._can_go_forward_changed_cb)
 
+	def set_links_controller(self, links_controller):
+		self._links_controller = links_controller
+		self._post.props.sensitive = False
+
 	def _progress_changed_cb(self, embed, spec):
 		self._entry.props.progress = embed.props.progress
 
@@ -74,6 +90,11 @@ class Toolbar(gtk.Toolbar):
 	def _go_forward_cb(self, button):
 		self._embed.go_forward()
 
+	def _post_cb(self, button):
+		title = self._embed.get_title()
+		address = self._embed.get_location()
+		self._links_controller.post_link(title, address)
+
 	def _insert_spring(self):
 		separator = gtk.SeparatorToolItem()
 		separator.set_draw(False)

activities/web/webactivity.py

@@ -6,6 +6,9 @@ from sugar.activity.Activity import Activity
 from sugar import env
 from webbrowser import WebBrowser
 from toolbar import Toolbar
+from linksmodel import LinksModel
+from linksview import LinksView
+from linkscontroller import LinksController
 
 _HOMEPAGE = 'http://www.google.com'
 
@@ -20,13 +23,24 @@ class WebActivity(Activity):
 		self._browser = WebBrowser()
 		self._browser.connect('notify::title', self._title_changed_cb)
 
-		toolbar = Toolbar(self._browser)
-		vbox.pack_start(toolbar, False)
-		toolbar.show()
+		links_model = LinksModel()
+		links_view = LinksView(links_model)
 
-		vbox.pack_start(self._browser)
+		self._toolbar = Toolbar(self._browser)
+		vbox.pack_start(self._toolbar, False)
+		self._toolbar.show()
+
+		hbox = gtk.HBox()
+
+		hbox.pack_start(links_view, False)
+		links_view.show()
+		
+		hbox.pack_start(self._browser)
 		self._browser.show()
 
+		vbox.pack_start(hbox)
+		hbox.show()
+
 		self.add(vbox)
 		vbox.show()
 
@@ -35,6 +49,9 @@ class WebActivity(Activity):
 	def join(self, activity_ps):
 		Activity.join(self, activity_ps)
 
+		links_controller = LinksController(service, links_model)
+		self._toolbar.set_links_controller(links_controller)
+
 		url = self._service.get_published_value('URL')
 		if url:
 			self._browser.load_url(url)

sugar/graphics/bubble.py

@@ -0,0 +1,48 @@
+import gobject
+import hippo
+
+class Bubble(hippo.CanvasBox, hippo.CanvasItem):
+	__gtype_name__ = 'SugarBubble'
+
+	__gproperties__ = {
+		'color'    : (object, None, None,
+					  gobject.PARAM_READWRITE),
+	}
+
+	def __init__(self, **kwargs):
+		self._color = None
+		self._radius = 12
+
+		hippo.CanvasBox.__init__(self, **kwargs)
+
+	def do_set_property(self, pspec, value):
+		if pspec.name == 'color':
+			self._color = value
+			self.emit_paint_needed(0, 0, -1, -1)
+
+	def do_get_property(self, pspec):
+		if pspec.name == 'color':
+			return self._color
+
+	def _color_string_to_rgb(self, color_string):
+		col = gtk.gdk.color_parse(color_string)
+		return (col.red / 65535, col.green / 65535, col.blue / 65535)
+
+	def do_paint_below_children(self, cr, damaged_box):
+		cairo_move_to(self._radius, 0);
+		cr.arc(width - self._radius, self._radius,
+			   self._radius, math.pi * 1.5, math.pi * 2);
+		cr.arc(width - self._radius, height - self._radius,
+			   self._radius, 0, math.pi * 0.5);
+		cr.arc(self._radius, height - self._radius,
+			   self._radius, math.pi * 0.5, math.pi);
+		cr.arc(cr, self._radius, self._radius, self._radius,
+			   math.pi, math.pi * 1.5);
+
+		color = self._color.get_fill_color()
+		cr.set_source_rgb(cr, self._color_string_to_rgb(color));
+		cairo_fill_preserve(cr);
+
+		color = self._color.get_stroke_color()
+		cr.set_source_rgb(cr, self._color_string_to_rgb(color));
+		cairo_stroke(cr);