Implement links. Require new gecko-embed

chat/chat.py

@@ -142,6 +142,13 @@ class ChatActivity(activity.Activity):
 		self._buddy_list = BuddyList.BuddyList(self._realname)
 		self._buddy_list.add_buddy_listener(self._on_buddy_presence_event)
 
+		bus = dbus.SessionBus()
+		proxy_obj = bus.get_object('com.redhat.Sugar.Browser', '/com/redhat/Sugar/Browser')
+		self.browser_shell = dbus.Interface(proxy_obj, 'com.redhat.Sugar.BrowserShell')
+
+	def __link_clicked_cb(self, view, address):
+		self.browser_shell.open_browser(address)
+
 	def _create_chat(self):
 		chat_vbox = gtk.VBox()
 		chat_vbox.set_spacing(6)
@@ -154,7 +161,8 @@ class ChatActivity(activity.Activity):
 		sw = gtk.ScrolledWindow()
 		sw.set_shadow_type(gtk.SHADOW_IN)
 		sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_ALWAYS)
-		self._chat_view = gtk.TextView()
+		self._chat_view = richtext.RichTextView()
+		self._chat_view.connect("link-clicked", self.__link_clicked_cb)
 		sw.add(self._chat_view)
 		self._chat_view.show()
 		chat_vbox.pack_start(sw)
@@ -164,7 +172,7 @@ class ChatActivity(activity.Activity):
 		chat_view_sw = gtk.ScrolledWindow()
 		chat_view_sw.set_shadow_type(gtk.SHADOW_IN)
 		chat_view_sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
-		self._editor = gtk.TextView(rich_buf)
+		self._editor = richtext.RichTextView(rich_buf)
 		self._editor.connect("key-press-event", self.__key_press_event_cb)
 		self._editor.set_size_request(-1, 50)
 		chat_view_sw.add(self._editor)
@@ -229,6 +237,34 @@ class ChatActivity(activity.Activity):
 		
 		return vbox
 
+	def _create_toolbar(self, rich_buf):
+		toolbar = richtext.RichTextToolbar(rich_buf)
+
+		item = gtk.MenuToolButton(None, "Links")
+		item.set_menu(gtk.Menu())
+		item.connect("show-menu", self.__show_link_menu_cb)
+		toolbar.insert(item, -1)
+		item.show()
+		
+		return toolbar
+
+	def __link_activate_cb(self, item, link):
+		buf = self._editor.get_buffer()
+		buf.append_link(link['title'], link['address'])
+
+	def __show_link_menu_cb(self, button):
+		menu = gtk.Menu()
+		
+		links = self.browser_shell.get_links()
+
+		for link in links:
+			item = gtk.MenuItem(link['title'], False)
+			item.connect("activate", self.__link_activate_cb, link)
+			menu.append(item)
+			item.show()
+		
+		button.set_menu(menu)
+		
 	def _ui_setup(self, plug):
 		vbox = gtk.VBox(False, 6)
 
@@ -246,7 +282,7 @@ class ChatActivity(activity.Activity):
 		vbox.pack_start(hbox)
 		hbox.show()
 
-		toolbar = richtext.RichTextToolbar(rich_buf)
+		toolbar = self._create_toolbar(rich_buf)
 		vbox.pack_start(toolbar, False);
 		toolbar.show()		
 		

chat/richtext.py

@@ -1,11 +1,43 @@
 #!/usr/bin/env python
 
 import pygtk
+import gobject
 pygtk.require('2.0')
 import gtk
 import pango
 import xml.sax
 
+class RichTextView(gtk.TextView):
+	
+	__gsignals__ = {
+		'link-clicked': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+					    ([gobject.TYPE_STRING]))
+	}
+
+	def __init__(self, rich_buf = None):
+		gtk.TextView.__init__(self, rich_buf)
+#		self.connect("motion-notify-event", self.__motion_notify_cb)
+		self.connect("button-press-event", self.__button_press_cb)
+
+#	def __motion_notify_cb(self, widget, event):
+#		if event.is_hint:
+#			[x, y, state] = event.window.get_pointer();
+
+	def __button_press_cb(self, widget, event):
+		buf = self.get_buffer()
+		it = self.get_iter_at_location(int(event.x), int(event.y))
+		if it.has_tag(buf.get_tag_table().lookup("link")):
+			address_tag = buf.get_tag_table().lookup("link-address")
+
+			address_end = it.copy()
+			address_end.backward_to_tag_toggle(address_tag)
+			
+			address_start = address_end.copy()
+			address_start.backward_to_tag_toggle(address_tag)
+			
+			address = buf.get_text(address_start, address_end)
+			self.emit("link-clicked", address)
+
 class RichTextBuffer(gtk.TextBuffer):
 	def __init__(self):
 		gtk.TextBuffer.__init__(self)
@@ -14,6 +46,11 @@ class RichTextBuffer(gtk.TextBuffer):
 		
 		self.__create_tags()
 		self.active_tags = []
+
+	def append_link(self, title, address):
+		it = self.get_iter_at_mark(self.get_insert())
+		self.insert_with_tags_by_name(it, address, "link", "link-address")
+		self.insert_with_tags_by_name(it, title, "link")
 		
 	def apply_tag(self, tag_name):
 		self.active_tags.append(tag_name)
@@ -32,6 +69,13 @@ class RichTextBuffer(gtk.TextBuffer):
 			self.remove_tag_by_name(tag_name, start, end)
 	
 	def __create_tags(self):
+		tag = self.create_tag("link")
+		tag.set_property("underline", pango.UNDERLINE_SINGLE)
+		tag.set_property("foreground", "#0000FF")
+
+		tag = self.create_tag("link-address")
+		tag.set_property("invisible", True)
+
 		tag = self.create_tag("bold")
 		tag.set_property("weight", pango.WEIGHT_BOLD)
 		
@@ -137,6 +181,8 @@ class RichTextHandler(xml.sax.handler.ContentHandler):
 		if name != "richtext":
 			tag = self.serializer.deserialize_element(name, attrs)
 			self.tags.append(tag)
+		if name == "link":
+			self.href = attrs['href']
  
 	def characters(self, data):
 		start_it = it = self.buf.get_end_iter()
@@ -146,6 +192,9 @@ class RichTextHandler(xml.sax.handler.ContentHandler):
 
 		for tag in self.tags:
 			self.buf.apply_tag_by_name(tag, start_it, it)
+			if tag == "link":
+				self.buf.insert_with_tags_by_name(start_it, self.href,
+											      "link", "link-address")
  
 	def endElement(self, name):
 		if name != "richtext":
@@ -162,15 +211,25 @@ class RichTextSerializer:
 			return "italic"
 		elif el_name == "font":
 			return "font-size-" + attributes["size"]
+		elif el_name == "link":
+			return "link"
 		else:
 			return None
 
-	def serialize_tag_start(self, tag):
+	def serialize_tag_start(self, tag, it):
 		name = tag.get_property("name")
 		if name == "bold":
 			return "<bold>"
 		elif name == "italic":
 			return "<italic>"
+		elif name == "link":
+			address_tag = self.buf.get_tag_table().lookup("link-address")
+			end = it.copy()
+			end.forward_to_tag_toggle(address_tag)
+			address = self.buf.get_text(it, end)
+			return "<link " + "href=\"" + address + "\">"
+		elif name == "link-address":
+			return ""
 		elif name.startswith("font-size-"):
 			tag_name = name.replace("font-size-", "", 1)
 			return "<font size=\"" + tag_name + "\">"
@@ -179,16 +238,22 @@ class RichTextSerializer:
 
 	def serialize_tag_end(self, tag):
 		name = tag.get_property("name")
-		if tag.get_property("name") == "bold":
+		if name == "bold":
 			return "</bold>"
-		elif tag.get_property("name") == "italic":
+		elif name == "italic":
 			return "</italic>"
+		elif name == "link":
+			return "</link>"
+		elif name == "link-address":
+			return ""
 		elif name.startswith("font-size-"):
 			return "</font>"
 		else:
 			return "</unknown>"
-			
+	
 	def serialize(self, buf):
+		self.buf = buf
+		
 		xml = "<richtext>"
 
 		next_it = buf.get_start_iter()
@@ -207,11 +272,15 @@ class RichTextSerializer:
 						break						
 					tags_to_reopen.append(open_tag)
 					
-			for tag in tags_to_reopen + it.get_toggled_tags(True):
+			for tag in tags_to_reopen:
 				self._open_tags.append(tag)
-				xml += self.serialize_tag_start(tag)
+				xml += self.serialize_tag_start(tag, it)
 			
-			xml += buf.get_text(it, next_it)
+			for tag in it.get_toggled_tags(True):
+				self._open_tags.append(tag)
+				xml += self.serialize_tag_start(tag, it)
+			
+			xml += buf.get_text(it, next_it, False)
 
 		if next_it.is_end():
 			self._open_tags.reverse()
@@ -232,6 +301,9 @@ class RichTextSerializer:
 def test_quit(window, rich_buf):
 	print RichTextSerializer().serialize(rich_buf)
 	gtk.main_quit()
+	
+def link_clicked(view, address):
+	print "Link clicked " + address
 
 if __name__ == "__main__":
 	window = gtk.Window()
@@ -246,12 +318,13 @@ if __name__ == "__main__":
 	xml_string += "<bold><italic>Test</italic>one</bold>\n"
 	xml_string += "<bold><italic>Test two</italic></bold>"
 	xml_string += "<font size=\"xx-small\">Test three</font>"
-
+	xml_string += "<link href=\"http://www.gnome.org\">Test link</link>"
 	xml_string += "</richtext>"
 
 	RichTextSerializer().deserialize(xml_string, rich_buf)
 	
-	view = gtk.TextView(rich_buf)
+	view = RichTextView(rich_buf)
+	view.connect("link-clicked", link_clicked)
 	vbox.pack_start(view)
 	view.show()