Exemple #1
0
	def handle_mouse_motion(self, coordinate):
		"""
		The mouse has moved, respond to mouse dragging.
		Move a selected element to the new coordinate.
		Auto-scroll the scroll bars at the boundaries.
		"""
		#to perform a movement, the mouse must be pressed, no pending events
		if gtk.events_pending() or not self.mouse_pressed: return
		#perform autoscrolling
		width, height = self.get_size()
		x, y = coordinate
		h_adj = self.get_scroll_pane().get_hadjustment()
		v_adj = self.get_scroll_pane().get_vadjustment()
		for pos, length, adj, adj_val, adj_len in (
			(x, width, h_adj, h_adj.get_value(), h_adj.page_size),
			(y, height, v_adj, v_adj.get_value(), v_adj.page_size),
		):
			#scroll if we moved near the border
			if pos-adj_val > adj_len-SCROLL_PROXIMITY_SENSITIVITY and adj_val+SCROLL_DISTANCE < length-adj_len:
				adj.set_value(adj_val+SCROLL_DISTANCE)
				adj.emit('changed')
			elif pos-adj_val < SCROLL_PROXIMITY_SENSITIVITY:
				adj.set_value(adj_val-SCROLL_DISTANCE)
				adj.emit('changed')
		#remove the connection if selected in drag event
		if len(self.get_selected_elements()) == 1 and self.get_selected_element().is_connection():
			Actions.ELEMENT_DELETE()
		#move the selected elements and record the new coordinate
		X, Y = self.get_coordinate()
		if not self.get_ctrl_mask(): self.move_selected((int(x - X), int(y - Y)))
		self.set_coordinate((x, y))
		#queue draw for animation
		self.queue_draw()
Exemple #2
0
 def handle_mouse_motion(self, coordinate):
     """
     The mouse has moved, respond to mouse dragging or notify elements
     Move a selected element to the new coordinate.
     Auto-scroll the scroll bars at the boundaries.
     """
     #to perform a movement, the mouse must be pressed
     # (no longer checking pending events via gtk.events_pending() - always true in Windows)
     if not self.mouse_pressed:
         # only continue if mouse-over stuff is enabled (just the auto-hide port label stuff for now)
         if not Actions.TOGGLE_AUTO_HIDE_PORT_LABELS.get_active(): return
         redraw = False
         for element in reversed(self.get_elements()):
             over_element = element.what_is_selected(coordinate)
             if not over_element: continue
             if over_element != self.element_under_mouse:  # over sth new
                 if self.element_under_mouse:
                     redraw |= self.element_under_mouse.mouse_out() or False
                 self.element_under_mouse = over_element
                 redraw |= over_element.mouse_over() or False
             break
         else:
             if self.element_under_mouse:
                 redraw |= self.element_under_mouse.mouse_out() or False
                 self.element_under_mouse = None
         if redraw:
             #self.create_labels()
             self.create_shapes()
             self.queue_draw()
     else:
         #perform auto-scrolling
         width, height = self.get_size()
         x, y = coordinate
         h_adj = self.get_scroll_pane().get_hadjustment()
         v_adj = self.get_scroll_pane().get_vadjustment()
         for pos, length, adj, adj_val, adj_len in (
             (x, width, h_adj, h_adj.get_value(), h_adj.page_size),
             (y, height, v_adj, v_adj.get_value(), v_adj.page_size),
         ):
             #scroll if we moved near the border
             if pos-adj_val > adj_len-SCROLL_PROXIMITY_SENSITIVITY and adj_val+SCROLL_DISTANCE < length-adj_len:
                 adj.set_value(adj_val+SCROLL_DISTANCE)
                 adj.emit('changed')
             elif pos-adj_val < SCROLL_PROXIMITY_SENSITIVITY:
                 adj.set_value(adj_val-SCROLL_DISTANCE)
                 adj.emit('changed')
         #remove the connection if selected in drag event
         if len(self.get_selected_elements()) == 1 and self.get_selected_element().is_connection():
             Actions.ELEMENT_DELETE()
         #move the selected elements and record the new coordinate
         if not self.get_ctrl_mask():
             X, Y = self.get_coordinate()
             dX, dY = int(x - X), int(y - Y)
             active = Actions.TOGGLE_SNAP_TO_GRID.get_active() or self.get_mod1_mask()
             if not active or abs(dX) >= Utils.CANVAS_GRID_SIZE or abs(dY) >= Utils.CANVAS_GRID_SIZE:
                 self.move_selected((dX, dY))
                 self.set_coordinate((x, y))
         #queue draw for animation
         self.queue_draw()
Exemple #3
0
 def _handle_action(self, action):
     #print action
     ##################################################
     # Initalize/Quit
     ##################################################
     if action == Actions.APPLICATION_INITIALIZE:
         for action in Actions.get_all_actions():
             action.set_sensitive(False)  #set all actions disabled
         #enable a select few actions
         for action in (
                 Actions.APPLICATION_QUIT,
                 Actions.FLOW_GRAPH_NEW,
                 Actions.FLOW_GRAPH_OPEN,
                 Actions.FLOW_GRAPH_SAVE_AS,
                 Actions.FLOW_GRAPH_CLOSE,
                 Actions.ABOUT_WINDOW_DISPLAY,
                 Actions.FLOW_GRAPH_SCREEN_CAPTURE,
                 Actions.HELP_WINDOW_DISPLAY,
                 Actions.TYPES_WINDOW_DISPLAY,
         ):
             action.set_sensitive(True)
         if not self.init_file_paths:
             self.init_file_paths = Preferences.files_open()
         if not self.init_file_paths: self.init_file_paths = ['']
         for file_path in self.init_file_paths:
             if file_path:
                 self.main_window.new_page(
                     file_path)  #load pages from file paths
         if Preferences.file_open() in self.init_file_paths:
             self.main_window.new_page(Preferences.file_open(), show=True)
         if not self.get_page():
             self.main_window.new_page(
             )  #ensure that at least a blank page exists
     elif action == Actions.APPLICATION_QUIT:
         if self.main_window.close_pages():
             gtk.main_quit()
             exit(0)
     ##################################################
     # Selections
     ##################################################
     elif action == Actions.ELEMENT_SELECT:
         pass  #do nothing, update routines below
     elif action == Actions.NOTHING_SELECT:
         self.get_flow_graph().unselect()
     ##################################################
     # Enable/Disable
     ##################################################
     elif action == Actions.BLOCK_ENABLE:
         if self.get_flow_graph().enable_selected(True):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     elif action == Actions.BLOCK_DISABLE:
         if self.get_flow_graph().enable_selected(False):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     ##################################################
     # Cut/Copy/Paste
     ##################################################
     elif action == Actions.BLOCK_CUT:
         Actions.BLOCK_COPY()
         Actions.ELEMENT_DELETE()
     elif action == Actions.BLOCK_COPY:
         self.clipboard = self.get_flow_graph().copy_to_clipboard()
     elif action == Actions.BLOCK_PASTE:
         if self.clipboard:
             self.get_flow_graph().paste_from_clipboard(self.clipboard)
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     ##################################################
     # Move/Rotate/Delete/Create
     ##################################################
     elif action == Actions.BLOCK_MOVE:
         self.get_page().get_state_cache().save_new_state(
             self.get_flow_graph().export_data())
         self.get_page().set_saved(False)
     elif action == Actions.BLOCK_ROTATE_CCW:
         if self.get_flow_graph().rotate_selected(90):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     elif action == Actions.BLOCK_ROTATE_CW:
         if self.get_flow_graph().rotate_selected(-90):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     elif action == Actions.ELEMENT_DELETE:
         if self.get_flow_graph().remove_selected():
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             Actions.NOTHING_SELECT()
             self.get_page().set_saved(False)
     elif action == Actions.ELEMENT_CREATE:
         self.get_flow_graph().update()
         self.get_page().get_state_cache().save_new_state(
             self.get_flow_graph().export_data())
         Actions.NOTHING_SELECT()
         self.get_page().set_saved(False)
     elif action == Actions.BLOCK_INC_TYPE:
         if self.get_flow_graph().type_controller_modify_selected(1):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     elif action == Actions.BLOCK_DEC_TYPE:
         if self.get_flow_graph().type_controller_modify_selected(-1):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     elif action == Actions.PORT_CONTROLLER_INC:
         if self.get_flow_graph().port_controller_modify_selected(1):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     elif action == Actions.PORT_CONTROLLER_DEC:
         if self.get_flow_graph().port_controller_modify_selected(-1):
             self.get_flow_graph().update()
             self.get_page().get_state_cache().save_new_state(
                 self.get_flow_graph().export_data())
             self.get_page().set_saved(False)
     ##################################################
     # Window stuff
     ##################################################
     elif action == Actions.ABOUT_WINDOW_DISPLAY:
         Dialogs.AboutDialog(self.get_flow_graph().get_parent())
     elif action == Actions.HELP_WINDOW_DISPLAY:
         Dialogs.HelpDialog()
     elif action == Actions.TYPES_WINDOW_DISPLAY:
         Dialogs.TypesDialog(self.get_flow_graph().get_parent())
     elif action == Actions.ERRORS_WINDOW_DISPLAY:
         Dialogs.ErrorsDialog(self.get_flow_graph())
     ##################################################
     # Param Modifications
     ##################################################
     elif action == Actions.BLOCK_PARAM_MODIFY:
         selected_block = self.get_flow_graph().get_selected_block()
         if selected_block:
             if PropsDialog(selected_block).run():
                 #save the new state
                 self.get_flow_graph().update()
                 self.get_page().get_state_cache().save_new_state(
                     self.get_flow_graph().export_data())
                 self.get_page().set_saved(False)
             else:
                 #restore the current state
                 n = self.get_page().get_state_cache().get_current_state()
                 self.get_flow_graph().import_data(n)
                 self.get_flow_graph().update()
     ##################################################
     # Undo/Redo
     ##################################################
     elif action == Actions.FLOW_GRAPH_UNDO:
         n = self.get_page().get_state_cache().get_prev_state()
         if n:
             self.get_flow_graph().unselect()
             self.get_flow_graph().import_data(n)
             self.get_flow_graph().update()
             self.get_page().set_saved(False)
     elif action == Actions.FLOW_GRAPH_REDO:
         n = self.get_page().get_state_cache().get_next_state()
         if n:
             self.get_flow_graph().unselect()
             self.get_flow_graph().import_data(n)
             self.get_flow_graph().update()
             self.get_page().set_saved(False)
     ##################################################
     # New/Open/Save/Close
     ##################################################
     elif action == Actions.FLOW_GRAPH_NEW:
         self.main_window.new_page()
     elif action == Actions.FLOW_GRAPH_OPEN:
         file_paths = OpenFlowGraphFileDialog(
             self.get_page().get_file_path()).run()
         if file_paths:  #open a new page for each file, show only the first
             for i, file_path in enumerate(file_paths):
                 self.main_window.new_page(file_path, show=(i == 0))
     elif action == Actions.FLOW_GRAPH_CLOSE:
         self.main_window.close_page()
     elif action == Actions.FLOW_GRAPH_SAVE:
         #read-only or undefined file path, do save-as
         if self.get_page().get_read_only(
         ) or not self.get_page().get_file_path():
             Actions.FLOW_GRAPH_SAVE_AS()
         #otherwise try to save
         else:
             try:
                 ParseXML.to_file(self.get_flow_graph().export_data(),
                                  self.get_page().get_file_path())
                 self.get_page().set_saved(True)
             except IOError:
                 Messages.send_fail_save(self.get_page().get_file_path())
                 self.get_page().set_saved(False)
     elif action == Actions.FLOW_GRAPH_SAVE_AS:
         file_path = SaveFlowGraphFileDialog(
             self.get_page().get_file_path()).run()
         if file_path is not None:
             self.get_page().set_file_path(file_path)
             Actions.FLOW_GRAPH_SAVE()
     elif action == Actions.FLOW_GRAPH_SCREEN_CAPTURE:
         file_path = SaveImageFileDialog(
             self.get_page().get_file_path()).run()
         if file_path is not None:
             pixbuf = self.get_flow_graph().get_drawing_area().get_pixbuf()
             pixbuf.save(file_path, IMAGE_FILE_EXTENSION[1:])
     ##################################################
     # Gen/Exec/Stop
     ##################################################
     elif action == Actions.FLOW_GRAPH_GEN:
         if not self.get_page().get_pid():
             if not self.get_page().get_saved() or not self.get_page(
             ).get_file_path():
                 Actions.FLOW_GRAPH_SAVE(
                 )  #only save if file path missing or not saved
             if self.get_page().get_saved() and self.get_page(
             ).get_file_path():
                 generator = self.get_page().get_generator()
                 try:
                     Messages.send_start_gen(generator.get_file_path())
                     generator.write()
                 except Exception, e:
                     Messages.send_fail_gen(e)
             else:
                 self.generator = None
Exemple #4
0
    def _handle_action(self, action):
        #print action
        ##################################################
        # Initialize/Quit
        ##################################################
        if action == Actions.APPLICATION_INITIALIZE:
            for action in Actions.get_all_actions():
                action.set_sensitive(False)  #set all actions disabled
            #enable a select few actions
            for action in (
                    Actions.APPLICATION_QUIT,
                    Actions.FLOW_GRAPH_NEW,
                    Actions.FLOW_GRAPH_OPEN,
                    Actions.FLOW_GRAPH_SAVE_AS,
                    Actions.FLOW_GRAPH_CLOSE,
                    Actions.ABOUT_WINDOW_DISPLAY,
                    Actions.FLOW_GRAPH_SCREEN_CAPTURE,
                    Actions.HELP_WINDOW_DISPLAY,
                    Actions.TYPES_WINDOW_DISPLAY,
                    Actions.TOGGLE_BLOCKS_WINDOW,
                    Actions.TOGGLE_REPORTS_WINDOW,
                    Actions.TOGGLE_HIDE_DISABLED_BLOCKS,
                    Actions.TOOLS_RUN_FDESIGN,
                    Actions.TOGGLE_SCROLL_LOCK,
                    Actions.CLEAR_REPORTS,
                    Actions.SAVE_REPORTS,
                    Actions.TOGGLE_AUTO_HIDE_PORT_LABELS,
                    Actions.TOGGLE_SNAP_TO_GRID,
                    Actions.TOGGLE_SHOW_BLOCK_COMMENTS,
                    Actions.TOGGLE_SHOW_CODE_PREVIEW_TAB,
            ):
                action.set_sensitive(True)
            if ParseXML.xml_failures:
                Messages.send_xml_errors_if_any(ParseXML.xml_failures)
                Actions.XML_PARSER_ERRORS_DISPLAY.set_sensitive(True)

            if not self.init_file_paths:
                self.init_file_paths = filter(os.path.exists,
                                              Preferences.files_open())
            if not self.init_file_paths: self.init_file_paths = ['']
            for file_path in self.init_file_paths:
                if file_path:
                    self.main_window.new_page(
                        file_path)  #load pages from file paths
            if Preferences.file_open() in self.init_file_paths:
                self.main_window.new_page(Preferences.file_open(), show=True)
            if not self.get_page():
                self.main_window.new_page(
                )  #ensure that at least a blank page exists

            self.main_window.btwin.search_entry.hide()
            for action in (
                    Actions.TOGGLE_REPORTS_WINDOW,
                    Actions.TOGGLE_BLOCKS_WINDOW,
                    Actions.TOGGLE_AUTO_HIDE_PORT_LABELS,
                    Actions.TOGGLE_SCROLL_LOCK,
                    Actions.TOGGLE_SNAP_TO_GRID,
                    Actions.TOGGLE_SHOW_BLOCK_COMMENTS,
                    Actions.TOGGLE_SHOW_CODE_PREVIEW_TAB,
            ):
                action.load_from_preferences()
        elif action == Actions.APPLICATION_QUIT:
            if self.main_window.close_pages():
                gtk.main_quit()
                exit(0)
        ##################################################
        # Selections
        ##################################################
        elif action == Actions.ELEMENT_SELECT:
            pass  #do nothing, update routines below
        elif action == Actions.NOTHING_SELECT:
            self.get_flow_graph().unselect()
        ##################################################
        # Enable/Disable
        ##################################################
        elif action == Actions.BLOCK_ENABLE:
            if self.get_flow_graph().enable_selected(True):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_DISABLE:
            if self.get_flow_graph().enable_selected(False):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_BYPASS:
            if self.get_flow_graph().bypass_selected():
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        ##################################################
        # Cut/Copy/Paste
        ##################################################
        elif action == Actions.BLOCK_CUT:
            Actions.BLOCK_COPY()
            Actions.ELEMENT_DELETE()
        elif action == Actions.BLOCK_COPY:
            self.clipboard = self.get_flow_graph().copy_to_clipboard()
        elif action == Actions.BLOCK_PASTE:
            if self.clipboard:
                self.get_flow_graph().paste_from_clipboard(self.clipboard)
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
                ##################################################
                # Create heir block
                ##################################################
        elif action == Actions.BLOCK_CREATE_HIER:

            # keeping track of coordinates for pasting later
            coords = self.get_flow_graph().get_selected_blocks(
            )[0].get_coordinate()
            x, y = coords
            x_min = x
            y_min = y

            pads = []
            params = []

            # Save the state of the leaf blocks
            for block in self.get_flow_graph().get_selected_blocks():

                # Check for string variables within the blocks
                for param in block.get_params():
                    for variable in self.get_flow_graph().get_variables():
                        # If a block parameter exists that is a variable, create a parameter for it
                        if param.get_value() == variable.get_id():
                            params.append(param.get_value())
                    for flow_param in self.get_flow_graph().get_parameters():
                        # If a block parameter exists that is a parameter, create a parameter for it
                        if param.get_value() == flow_param.get_id():
                            params.append(param.get_value())

                # keep track of x,y mins for pasting later
                (x, y) = block.get_coordinate()
                if x < x_min:
                    x_min = x
                if y < y_min:
                    y_min = y

                for connection in block.get_connections():

                    # Get id of connected blocks
                    source_id = connection.get_source().get_parent().get_id()
                    sink_id = connection.get_sink().get_parent().get_id()

                    # If connected block is not in the list of selected blocks create a pad for it
                    if self.get_flow_graph().get_block(
                            source_id) not in self.get_flow_graph(
                            ).get_selected_blocks():
                        pads.append({
                            'key':
                            connection.get_sink().get_key(),
                            'coord':
                            connection.get_source().get_coordinate(),
                            'block_id':
                            block.get_id(),
                            'direction':
                            'source'
                        })

                    if self.get_flow_graph().get_block(
                            sink_id) not in self.get_flow_graph(
                            ).get_selected_blocks():
                        pads.append({
                            'key':
                            connection.get_source().get_key(),
                            'coord':
                            connection.get_sink().get_coordinate(),
                            'block_id':
                            block.get_id(),
                            'direction':
                            'sink'
                        })

            # Copy the selected blocks and paste them into a new page
            #   then move the flowgraph to a reasonable position
            Actions.BLOCK_COPY()
            self.main_window.new_page()
            Actions.BLOCK_PASTE()
            coords = (x_min, y_min)
            self.get_flow_graph().move_selected(coords)

            # Set flow graph to heir block type
            top_block = self.get_flow_graph().get_block("top_block")
            top_block.get_param('generate_options').set_value('hb')

            # this needs to be a unique name
            top_block.get_param('id').set_value('new_heir')

            # Remove the default samp_rate variable block that is created
            remove_me = self.get_flow_graph().get_block("samp_rate")
            self.get_flow_graph().remove_element(remove_me)

            # Add the param blocks along the top of the window
            x_pos = 150
            for param in params:
                param_id = self.get_flow_graph().add_new_block(
                    'parameter', (x_pos, 10))
                param_block = self.get_flow_graph().get_block(param_id)
                param_block.get_param('id').set_value(param)
                x_pos = x_pos + 100

            for pad in pads:
                # Add the pad sources and sinks within the new heir block
                if pad['direction'] == 'sink':

                    # Add new PAD_SINK block to the canvas
                    pad_id = self.get_flow_graph().add_new_block(
                        'pad_sink', pad['coord'])

                    # setup the references to the sink and source
                    pad_block = self.get_flow_graph().get_block(pad_id)
                    pad_sink = pad_block.get_sinks()[0]

                    source_block = self.get_flow_graph().get_block(
                        pad['block_id'])
                    source = source_block.get_source(pad['key'])

                    # Ensure the port types match
                    while pad_sink.get_type() != source.get_type():

                        # Special case for some blocks that have non-standard type names, e.g. uhd
                        if pad_sink.get_type(
                        ) == 'complex' and source.get_type() == 'fc32':
                            break
                        pad_block.type_controller_modify(1)

                    # Connect the pad to the proper sinks
                    new_connection = self.get_flow_graph().connect(
                        source, pad_sink)

                elif pad['direction'] == 'source':
                    pad_id = self.get_flow_graph().add_new_block(
                        'pad_source', pad['coord'])

                    # setup the references to the sink and source
                    pad_block = self.get_flow_graph().get_block(pad_id)
                    pad_source = pad_block.get_sources()[0]

                    sink_block = self.get_flow_graph().get_block(
                        pad['block_id'])
                    sink = sink_block.get_sink(pad['key'])

                    # Ensure the port types match
                    while sink.get_type() != pad_source.get_type():
                        # Special case for some blocks that have non-standard type names, e.g. uhd
                        if pad_source.get_type(
                        ) == 'complex' and sink.get_type() == 'fc32':
                            break
                        pad_block.type_controller_modify(1)

                    # Connect the pad to the proper sinks
                    new_connection = self.get_flow_graph().connect(
                        pad_source, sink)

            # update the new heir block flow graph
            self.get_flow_graph().update()

        ##################################################
        # Move/Rotate/Delete/Create
        ##################################################
        elif action == Actions.BLOCK_MOVE:
            self.get_page().get_state_cache().save_new_state(
                self.get_flow_graph().export_data())
            self.get_page().set_saved(False)
        elif action == Actions.BLOCK_ROTATE_CCW:
            if self.get_flow_graph().rotate_selected(90):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_ROTATE_CW:
            if self.get_flow_graph().rotate_selected(-90):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.ELEMENT_DELETE:
            if self.get_flow_graph().remove_selected():
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                Actions.NOTHING_SELECT()
                self.get_page().set_saved(False)
        elif action == Actions.ELEMENT_CREATE:
            self.get_flow_graph().update()
            self.get_page().get_state_cache().save_new_state(
                self.get_flow_graph().export_data())
            Actions.NOTHING_SELECT()
            self.get_page().set_saved(False)
        elif action == Actions.BLOCK_INC_TYPE:
            if self.get_flow_graph().type_controller_modify_selected(1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_DEC_TYPE:
            if self.get_flow_graph().type_controller_modify_selected(-1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.PORT_CONTROLLER_INC:
            if self.get_flow_graph().port_controller_modify_selected(1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.PORT_CONTROLLER_DEC:
            if self.get_flow_graph().port_controller_modify_selected(-1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(
                    self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        ##################################################
        # Window stuff
        ##################################################
        elif action == Actions.ABOUT_WINDOW_DISPLAY:
            Dialogs.AboutDialog(self.get_flow_graph().get_parent())
        elif action == Actions.HELP_WINDOW_DISPLAY:
            Dialogs.HelpDialog()
        elif action == Actions.TYPES_WINDOW_DISPLAY:
            Dialogs.TypesDialog(self.get_flow_graph().get_parent())
        elif action == Actions.ERRORS_WINDOW_DISPLAY:
            Dialogs.ErrorsDialog(self.get_flow_graph())
        elif action == Actions.TOGGLE_REPORTS_WINDOW:
            if action.get_active():
                self.main_window.reports_scrolled_window.show()
            else:
                self.main_window.reports_scrolled_window.hide()
            action.save_to_preferences()
        elif action == Actions.TOGGLE_BLOCKS_WINDOW:
            if action.get_active():
                self.main_window.btwin.show()
            else:
                self.main_window.btwin.hide()
            action.save_to_preferences()
        elif action == Actions.TOGGLE_SCROLL_LOCK:
            active = action.get_active()
            self.main_window.text_display.scroll_lock = active
            if active:
                self.main_window.text_display.scroll_to_end()
            action.save_to_preferences()
        elif action == Actions.CLEAR_REPORTS:
            self.main_window.text_display.clear()
        elif action == Actions.SAVE_REPORTS:
            file_path = SaveReportsFileDialog(
                self.get_page().get_file_path()).run()
            if file_path is not None:
                self.main_window.text_display.save(file_path)
        elif action == Actions.TOGGLE_HIDE_DISABLED_BLOCKS:
            Actions.NOTHING_SELECT()
        elif action == Actions.TOGGLE_AUTO_HIDE_PORT_LABELS:
            action.save_to_preferences()
            for page in self.main_window.get_pages():
                page.get_flow_graph().create_shapes()
        elif action == Actions.TOGGLE_SNAP_TO_GRID:
            action.save_to_preferences()
        elif action == Actions.TOGGLE_SHOW_BLOCK_COMMENTS:
            action.save_to_preferences()
        elif action == Actions.TOGGLE_SHOW_CODE_PREVIEW_TAB:
            action.save_to_preferences()
        ##################################################
        # Param Modifications
        ##################################################
        elif action == Actions.BLOCK_PARAM_MODIFY:
            selected_block = self.get_flow_graph().get_selected_block()
            if selected_block:
                dialog = PropsDialog(selected_block)
                response = gtk.RESPONSE_APPLY
                while response == gtk.RESPONSE_APPLY:  # rerun the dialog if Apply was hit
                    response = dialog.run()
                    if response in (gtk.RESPONSE_APPLY, gtk.RESPONSE_ACCEPT):
                        self.get_flow_graph().update()
                        self.get_page().get_state_cache().save_new_state(
                            self.get_flow_graph().export_data())
                        self.get_page().set_saved(False)
                    else:  # restore the current state
                        n = self.get_page().get_state_cache(
                        ).get_current_state()
                        self.get_flow_graph().import_data(n)
                        self.get_flow_graph().update()
                    if response == gtk.RESPONSE_APPLY:
                        # null action, that updates the main window
                        Actions.ELEMENT_SELECT()
                dialog.destroy()
        ##################################################
        # View Parser Errors
        ##################################################
        elif action == Actions.XML_PARSER_ERRORS_DISPLAY:
            ParserErrorsDialog(ParseXML.xml_failures).run()
        ##################################################
        # Undo/Redo
        ##################################################
        elif action == Actions.FLOW_GRAPH_UNDO:
            n = self.get_page().get_state_cache().get_prev_state()
            if n:
                self.get_flow_graph().unselect()
                self.get_flow_graph().import_data(n)
                self.get_flow_graph().update()
                self.get_page().set_saved(False)
        elif action == Actions.FLOW_GRAPH_REDO:
            n = self.get_page().get_state_cache().get_next_state()
            if n:
                self.get_flow_graph().unselect()
                self.get_flow_graph().import_data(n)
                self.get_flow_graph().update()
                self.get_page().set_saved(False)
        ##################################################
        # New/Open/Save/Close
        ##################################################
        elif action == Actions.FLOW_GRAPH_NEW:
            self.main_window.new_page()
        elif action == Actions.FLOW_GRAPH_OPEN:
            file_paths = OpenFlowGraphFileDialog(
                self.get_page().get_file_path()).run()
            if file_paths:  #open a new page for each file, show only the first
                for i, file_path in enumerate(file_paths):
                    self.main_window.new_page(file_path, show=(i == 0))
        elif action == Actions.FLOW_GRAPH_CLOSE:
            self.main_window.close_page()
        elif action == Actions.FLOW_GRAPH_SAVE:
            #read-only or undefined file path, do save-as
            if self.get_page().get_read_only(
            ) or not self.get_page().get_file_path():
                Actions.FLOW_GRAPH_SAVE_AS()
            #otherwise try to save
            else:
                try:
                    ParseXML.to_file(self.get_flow_graph().export_data(),
                                     self.get_page().get_file_path())
                    self.get_flow_graph().grc_file_path = self.get_page(
                    ).get_file_path()
                    self.get_page().set_saved(True)
                except IOError:
                    Messages.send_fail_save(self.get_page().get_file_path())
                    self.get_page().set_saved(False)
        elif action == Actions.FLOW_GRAPH_SAVE_AS:
            file_path = SaveFlowGraphFileDialog(
                self.get_page().get_file_path()).run()
            if file_path is not None:
                self.get_page().set_file_path(file_path)
                Actions.FLOW_GRAPH_SAVE()
        elif action == Actions.FLOW_GRAPH_SCREEN_CAPTURE:
            file_path = SaveImageFileDialog(
                self.get_page().get_file_path()).run()
            if file_path is not None:
                pixbuf = self.get_flow_graph().get_drawing_area().get_pixbuf()
                pixbuf.save(file_path, IMAGE_FILE_EXTENSION[1:])
        ##################################################
        # Gen/Exec/Stop
        ##################################################
        elif action == Actions.FLOW_GRAPH_GEN:
            if not self.get_page().get_proc():
                if not self.get_page().get_saved() or not self.get_page(
                ).get_file_path():
                    Actions.FLOW_GRAPH_SAVE(
                    )  #only save if file path missing or not saved
                if self.get_page().get_saved() and self.get_page(
                ).get_file_path():
                    generator = self.get_page().get_generator()
                    try:
                        Messages.send_start_gen(generator.get_file_path())
                        generator.write()
                    except Exception, e:
                        Messages.send_fail_gen(e)
                else:
                    self.generator = None
Exemple #5
0
    def _handle_action(self, action):
        #print action
        ##################################################
        # Initalize/Quit
        ##################################################
        if action == Actions.APPLICATION_INITIALIZE:
            for action in Actions.get_all_actions(): action.set_sensitive(False) #set all actions disabled
            #enable a select few actions
            for action in (
                Actions.APPLICATION_QUIT, Actions.FLOW_GRAPH_NEW,
                Actions.FLOW_GRAPH_OPEN, Actions.FLOW_GRAPH_SAVE_AS,
                Actions.FLOW_GRAPH_CLOSE, Actions.ABOUT_WINDOW_DISPLAY,
                Actions.FLOW_GRAPH_SCREEN_CAPTURE, Actions.HELP_WINDOW_DISPLAY,
                Actions.TYPES_WINDOW_DISPLAY,
            ): action.set_sensitive(True)
            if not self.init_file_paths:
                self.init_file_paths = Preferences.files_open()
            if not self.init_file_paths: self.init_file_paths = ['']
            for file_path in self.init_file_paths:
                if file_path: self.main_window.new_page(file_path) #load pages from file paths
            if Preferences.file_open() in self.init_file_paths:
                self.main_window.new_page(Preferences.file_open(), show=True)
            if not self.get_page(): self.main_window.new_page() #ensure that at least a blank page exists
        elif action == Actions.APPLICATION_QUIT:
            if self.main_window.close_pages():
                gtk.main_quit()
                exit(0)
        ##################################################
        # Selections
        ##################################################
        elif action == Actions.ELEMENT_SELECT:
            pass #do nothing, update routines below
        elif action == Actions.NOTHING_SELECT:
            self.get_flow_graph().unselect()
        ##################################################
        # Enable/Disable
        ##################################################
        elif action == Actions.BLOCK_ENABLE:
            if self.get_flow_graph().enable_selected(True):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_DISABLE:
            if self.get_flow_graph().enable_selected(False):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        ##################################################
        # Cut/Copy/Paste
        ##################################################
        elif action == Actions.BLOCK_CUT:
            Actions.BLOCK_COPY()
            Actions.ELEMENT_DELETE()
        elif action == Actions.BLOCK_COPY:
            self.clipboard = self.get_flow_graph().copy_to_clipboard()
        elif action == Actions.BLOCK_PASTE:
            if self.clipboard:
                self.get_flow_graph().paste_from_clipboard(self.clipboard)
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
                ##################################################
                # Create heir block 
                ##################################################
        elif action == Actions.BLOCK_CREATE_HIER:

                        # keeping track of coordinates for pasting later
                        coords = self.get_flow_graph().get_selected_blocks()[0].get_coordinate()
                        x,y = coords
                        x_min = x 
                        y_min = y

                        pads = [];
                        params = [];

                        # Save the state of the leaf blocks
                        for block in self.get_flow_graph().get_selected_blocks():

                            # Check for string variables within the blocks
                            for param in block.get_params():
                                for variable in self.get_flow_graph().get_variables():
                                    # If a block parameter exists that is a variable, create a parameter for it
                                    if param.get_value() == variable.get_id():
                                        params.append(param.get_value())
                                for flow_param in self.get_flow_graph().get_parameters():
                                    # If a block parameter exists that is a parameter, create a parameter for it
                                    if param.get_value() == flow_param.get_id():
                                        params.append(param.get_value())
           
                          
                            # keep track of x,y mins for pasting later 
                            (x,y) = block.get_coordinate()
                            if x < x_min:
                                x_min = x
                            if y < y_min:
                                y_min = y

                            for connection in block.get_connections():

                                # Get id of connected blocks
                                source_id = connection.get_source().get_parent().get_id()
                                sink_id = connection.get_sink().get_parent().get_id()
                                
                                # If connected block is not in the list of selected blocks create a pad for it 
                                if self.get_flow_graph().get_block(source_id) not in self.get_flow_graph().get_selected_blocks():
                                    pads.append({'key': connection.get_sink().get_key(), 'coord': connection.get_source().get_coordinate(), 'block_id' : block.get_id(), 'direction': 'source'})

                                if self.get_flow_graph().get_block(sink_id) not in self.get_flow_graph().get_selected_blocks():
                                    pads.append({'key': connection.get_source().get_key(), 'coord': connection.get_sink().get_coordinate(), 'block_id' : block.get_id(), 'direction': 'sink'})


                        # Copy the selected blocks and paste them into a new page
                        #   then move the flowgraph to a reasonable position
                        Actions.BLOCK_COPY()
                        self.main_window.new_page()
                        Actions.BLOCK_PASTE()
                        coords = (x_min,y_min)
                        self.get_flow_graph().move_selected(coords)


                        # Set flow graph to heir block type
                        top_block  = self.get_flow_graph().get_block("top_block")
                        top_block.get_param('generate_options').set_value('hb')

                        # this needs to be a unique name
                        top_block.get_param('id').set_value('new_heir')

                        # Remove the default samp_rate variable block that is created
                        remove_me  = self.get_flow_graph().get_block("samp_rate")
                        self.get_flow_graph().remove_element(remove_me) 


                        # Add the param blocks along the top of the window
                        x_pos = 150
                        for param in params:
                            param_id = self.get_flow_graph().add_new_block('parameter',(x_pos,10))
                            param_block = self.get_flow_graph().get_block(param_id)
                            param_block.get_param('id').set_value(param)
                            x_pos = x_pos + 100

                        for pad in pads:
                            # Add the pad sources and sinks within the new heir block
                            if pad['direction'] == 'sink':

                                # Add new PAD_SINK block to the canvas
                                pad_id = self.get_flow_graph().add_new_block('pad_sink', pad['coord'])

                                # setup the references to the sink and source
                                pad_block = self.get_flow_graph().get_block(pad_id)
                                pad_sink = pad_block.get_sinks()[0]

                                source_block = self.get_flow_graph().get_block(pad['block_id'])
                                source = source_block.get_source(pad['key'])

                                # Ensure the port types match
                                while pad_sink.get_type() != source.get_type():

                                    # Special case for some blocks that have non-standard type names, e.g. uhd
                                    if pad_sink.get_type() == 'complex' and source.get_type() == 'fc32':
                                        break;
                                    pad_block.type_controller_modify(1)

                                # Connect the pad to the proper sinks
                                new_connection = self.get_flow_graph().connect(source,pad_sink)

                            elif pad['direction'] == 'source':
                                pad_id = self.get_flow_graph().add_new_block('pad_source', pad['coord'])

                                # setup the references to the sink and source
                                pad_block = self.get_flow_graph().get_block(pad_id)
                                pad_source = pad_block.get_sources()[0]

                                sink_block = self.get_flow_graph().get_block(pad['block_id'])
                                sink = sink_block.get_sink(pad['key'])

                                # Ensure the port types match
                                while sink.get_type() != pad_source.get_type():
                                    # Special case for some blocks that have non-standard type names, e.g. uhd
                                    if pad_source.get_type() == 'complex' and sink.get_type() == 'fc32':
                                        break;
                                    pad_block.type_controller_modify(1)

                                # Connect the pad to the proper sinks
                                new_connection = self.get_flow_graph().connect(pad_source,sink)

                        # update the new heir block flow graph 
                        self.get_flow_graph().update()
                               

        ##################################################
        # Move/Rotate/Delete/Create
        ##################################################
        elif action == Actions.BLOCK_MOVE:
            self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
            self.get_page().set_saved(False)
        elif action == Actions.BLOCK_ROTATE_CCW:
            if self.get_flow_graph().rotate_selected(90):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_ROTATE_CW:
            if self.get_flow_graph().rotate_selected(-90):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.ELEMENT_DELETE:
            if self.get_flow_graph().remove_selected():
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                Actions.NOTHING_SELECT()
                self.get_page().set_saved(False)
        elif action == Actions.ELEMENT_CREATE:
            self.get_flow_graph().update()
            self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
            Actions.NOTHING_SELECT()
            self.get_page().set_saved(False)
        elif action == Actions.BLOCK_INC_TYPE:
            if self.get_flow_graph().type_controller_modify_selected(1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.BLOCK_DEC_TYPE:
            if self.get_flow_graph().type_controller_modify_selected(-1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.PORT_CONTROLLER_INC:
            if self.get_flow_graph().port_controller_modify_selected(1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        elif action == Actions.PORT_CONTROLLER_DEC:
            if self.get_flow_graph().port_controller_modify_selected(-1):
                self.get_flow_graph().update()
                self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                self.get_page().set_saved(False)
        ##################################################
        # Window stuff
        ##################################################
        elif action == Actions.ABOUT_WINDOW_DISPLAY:
            Dialogs.AboutDialog(self.get_flow_graph().get_parent())
        elif action == Actions.HELP_WINDOW_DISPLAY:
            Dialogs.HelpDialog()
        elif action == Actions.TYPES_WINDOW_DISPLAY:
            Dialogs.TypesDialog(self.get_flow_graph().get_parent())
        elif action == Actions.ERRORS_WINDOW_DISPLAY:
            Dialogs.ErrorsDialog(self.get_flow_graph())
        ##################################################
        # Param Modifications
        ##################################################
        elif action == Actions.BLOCK_PARAM_MODIFY:
            selected_block = self.get_flow_graph().get_selected_block()
            if selected_block:
                if PropsDialog(selected_block).run():
                    #save the new state
                    self.get_flow_graph().update()
                    self.get_page().get_state_cache().save_new_state(self.get_flow_graph().export_data())
                    self.get_page().set_saved(False)
                else:
                    #restore the current state
                    n = self.get_page().get_state_cache().get_current_state()
                    self.get_flow_graph().import_data(n)
                    self.get_flow_graph().update()
        ##################################################
        # Undo/Redo
        ##################################################
        elif action == Actions.FLOW_GRAPH_UNDO:
            n = self.get_page().get_state_cache().get_prev_state()
            if n:
                self.get_flow_graph().unselect()
                self.get_flow_graph().import_data(n)
                self.get_flow_graph().update()
                self.get_page().set_saved(False)
        elif action == Actions.FLOW_GRAPH_REDO:
            n = self.get_page().get_state_cache().get_next_state()
            if n:
                self.get_flow_graph().unselect()
                self.get_flow_graph().import_data(n)
                self.get_flow_graph().update()
                self.get_page().set_saved(False)
        ##################################################
        # New/Open/Save/Close
        ##################################################
        elif action == Actions.FLOW_GRAPH_NEW:
            self.main_window.new_page()
        elif action == Actions.FLOW_GRAPH_OPEN:
            file_paths = OpenFlowGraphFileDialog(self.get_page().get_file_path()).run()
            if file_paths: #open a new page for each file, show only the first
                for i,file_path in enumerate(file_paths):
                    self.main_window.new_page(file_path, show=(i==0))
        elif action == Actions.FLOW_GRAPH_CLOSE:
            self.main_window.close_page()
        elif action == Actions.FLOW_GRAPH_SAVE:
            #read-only or undefined file path, do save-as
            if self.get_page().get_read_only() or not self.get_page().get_file_path():
                Actions.FLOW_GRAPH_SAVE_AS()
            #otherwise try to save
            else:
                try:
                    ParseXML.to_file(self.get_flow_graph().export_data(), self.get_page().get_file_path())
                    self.get_flow_graph().grc_file_path = self.get_page().get_file_path()
                    self.get_page().set_saved(True)
                except IOError:
                    Messages.send_fail_save(self.get_page().get_file_path())
                    self.get_page().set_saved(False)
        elif action == Actions.FLOW_GRAPH_SAVE_AS:
            file_path = SaveFlowGraphFileDialog(self.get_page().get_file_path()).run()
            if file_path is not None:
                self.get_page().set_file_path(file_path)
                Actions.FLOW_GRAPH_SAVE()
        elif action == Actions.FLOW_GRAPH_SCREEN_CAPTURE:
            file_path = SaveImageFileDialog(self.get_page().get_file_path()).run()
            if file_path is not None:
                pixbuf = self.get_flow_graph().get_drawing_area().get_pixbuf()
                pixbuf.save(file_path, IMAGE_FILE_EXTENSION[1:])
        ##################################################
        # Gen/Exec/Stop
        ##################################################
        elif action == Actions.FLOW_GRAPH_GEN:
            if not self.get_page().get_proc():
                if not self.get_page().get_saved() or not self.get_page().get_file_path():
                    Actions.FLOW_GRAPH_SAVE() #only save if file path missing or not saved
                if self.get_page().get_saved() and self.get_page().get_file_path():
                    generator = self.get_page().get_generator()
                    try:
                        Messages.send_start_gen(generator.get_file_path())
                        generator.write()
                    except Exception,e: Messages.send_fail_gen(e)
                else: self.generator = None
        elif action == Actions.FLOW_GRAPH_EXEC:
            if not self.get_page().get_proc():
                Actions.FLOW_GRAPH_GEN()
                if self.get_page().get_saved() and self.get_page().get_file_path():
                    ExecFlowGraphThread(self)
        elif action == Actions.FLOW_GRAPH_KILL:
            if self.get_page().get_proc():
                try: self.get_page().get_proc().kill()
                except: print "could not kill process: %d"%self.get_page().get_proc().pid
        elif action == Actions.PAGE_CHANGE: #pass and run the global actions
            pass
        elif action == Actions.RELOAD_BLOCKS:
            self.platform.loadblocks()
            self.main_window.btwin.clear();
            self.platform.load_block_tree(self.main_window.btwin);
        elif action == Actions.OPEN_HIER:
            bn = [];
            for b in self.get_flow_graph().get_selected_blocks():
                if b._grc_source:
                    self.main_window.new_page(b._grc_source, show=True);
        elif action == Actions.BUSSIFY_SOURCES:
            n = {'name':'bus', 'type':'bus'}
            for b in self.get_flow_graph().get_selected_blocks():
                b.bussify(n, 'source');
            self.get_flow_graph()._old_selected_port = None;
            self.get_flow_graph()._new_selected_port = None;
            Actions.ELEMENT_CREATE();
            
        elif action == Actions.BUSSIFY_SINKS:
            n = {'name':'bus', 'type':'bus'}
            for b in self.get_flow_graph().get_selected_blocks():
                b.bussify(n, 'sink')
            self.get_flow_graph()._old_selected_port = None;
            self.get_flow_graph()._new_selected_port = None;
            Actions.ELEMENT_CREATE();
        else: print '!!! Action "%s" not handled !!!'%action
        ##################################################
        # Global Actions for all States
        ##################################################
        #update general buttons
        Actions.ERRORS_WINDOW_DISPLAY.set_sensitive(not self.get_flow_graph().is_valid())
        Actions.ELEMENT_DELETE.set_sensitive(bool(self.get_flow_graph().get_selected_elements()))
        Actions.BLOCK_PARAM_MODIFY.set_sensitive(bool(self.get_flow_graph().get_selected_block()))
        Actions.BLOCK_ROTATE_CCW.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BLOCK_ROTATE_CW.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        #update cut/copy/paste
        Actions.BLOCK_CUT.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BLOCK_COPY.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BLOCK_PASTE.set_sensitive(bool(self.clipboard))
        #update enable/disable
        Actions.BLOCK_ENABLE.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BLOCK_DISABLE.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BLOCK_CREATE_HIER.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.OPEN_HIER.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BUSSIFY_SOURCES.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.BUSSIFY_SINKS.set_sensitive(bool(self.get_flow_graph().get_selected_blocks()))
        Actions.RELOAD_BLOCKS.set_sensitive(True)
        #set the exec and stop buttons
        self.update_exec_stop()
        #saved status
        Actions.FLOW_GRAPH_SAVE.set_sensitive(not self.get_page().get_saved())
        self.main_window.update()
        try: #set the size of the flow graph area (if changed)
            new_size = self.get_flow_graph().get_option('window_size')
            if self.get_flow_graph().get_size() != tuple(new_size):
                self.get_flow_graph().set_size(*new_size)
        except: pass
        #draw the flow graph
        self.get_flow_graph().update_selected()
        self.get_flow_graph().queue_draw()
        return True #action was handled