details: Add USB redirection support in console viewer

Add "Select USB devices to redirect" option in console viewer
Initialize and embed UsbDeviceWidget object from SpiceClientGtk into
a dialog to let use choose available USB devices for redirection.
Throw an error message if USB connection failed.

ui/vmm-details.ui

@@ -337,6 +337,21 @@
                         <signal name="activate" handler="on_details_menu_screenshot_activate" swapped="no"/>
                       </object>
                     </child>
+                    <child>
+                      <object class="GtkSeparatorMenuItem" id="separator13">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkMenuItem" id="details-menu-usb-redirection">
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="label" translatable="yes">_Select USB devices to redirect</property>
+                        <property name="use_underline">True</property>
+                        <signal name="activate" handler="on_details_menu_usb_redirection" swapped="no"/>
+                      </object>
+                    </child>
                   </object>
                 </child>
               </object>

virtManager/console.py

@@ -286,6 +286,7 @@ class VNCViewer(Viewer):
         Viewer.__init__(self, console)
         self.display = GtkVnc.Display.new()
         self.sockfd = None
+        self.type = "vnc"
 
         # Last noticed desktop resolution
         self.desktop_resolution = None
@@ -446,6 +447,7 @@ class SpiceViewer(Viewer):
         self.display = None
         self.audio = None
         self.display_channel = None
+        self.type = "spice"
 
     def _init_widget(self):
         self.set_grab_keys()
@@ -594,6 +596,22 @@ class SpiceViewer(Viewer):
             return
         self.display.set_property("scaling", scaling)
 
+    def get_usb_widget(self):
+
+        # The @format positional parameters are the following:
+        # 1 '%s' manufacturer
+        # 2 '%s' product
+        # 3 '%s' descriptor (a [vendor_id:product_id] string)
+        # 4 '%d' bus
+        # 5 '%d' address
+
+        usb_device_description_fmt = _("%s %s %s at %d-%d")
+
+        if self.spice_session:
+            return SpiceClientGtk.UsbDeviceWidget.new(self.spice_session,
+                                                      usb_device_description_fmt)
+        return
+
 
 class vmmConsolePages(vmmGObjectUI):
     def __init__(self, vm, builder, topwin):
@@ -955,11 +973,13 @@ class vmmConsolePages(vmmGObjectUI):
         self.close_viewer()
         self.widget("console-pages").set_current_page(PAGE_UNAVAILABLE)
         self.widget("details-menu-vm-screenshot").set_sensitive(False)
+        self.widget("details-menu-usb-redirection").set_sensitive(False)
         self.widget("console-unavailable").set_label("<b>" + msg + "</b>")
 
     def activate_auth_page(self, withPassword=True, withUsername=False):
         (pw, username) = self.config.get_console_password(self.vm)
         self.widget("details-menu-vm-screenshot").set_sensitive(False)
+        self.widget("details-menu-usb-redirection").set_sensitive(False)
 
         if withPassword:
             self.widget("console-auth-password").show()
@@ -999,6 +1019,9 @@ class vmmConsolePages(vmmGObjectUI):
         if self.viewer and self.viewer.display:
             self.viewer.display.grab_focus()
 
+            if self.viewer.type == "spice":
+                self.widget("details-menu-usb-redirection").set_sensitive(True)
+
     def page_changed(self, ignore1=None, ignore2=None, ignore3=None):
         self.set_allow_fullscreen()
 

virtManager/details.py

@@ -415,6 +415,7 @@ class vmmDetails(vmmGObjectUI):
             "on_details_menu_migrate_activate": self.control_vm_migrate,
             "on_details_menu_delete_activate": self.control_vm_delete,
             "on_details_menu_screenshot_activate": self.control_vm_screenshot,
+            "on_details_menu_usb_redirection": self.control_vm_usb_redirection,
             "on_details_menu_view_toolbar_activate": self.toggle_toolbar,
             "on_details_menu_view_manager_activate": self.view_manager,
             "on_details_menu_view_details_toggled": self.details_console_changed,
@@ -1593,6 +1594,31 @@ class vmmDetails(vmmGObjectUI):
         except Exception, e:
             self.err.show_err(_("Error taking screenshot: %s") % str(e))
 
+    def spice_usbdev_rediret_error(self,
+                                   spice_usbdev_widget, spice_usb_device,
+                                   errstr):
+        ignore_widget = spice_usbdev_widget
+        ignore_device = spice_usb_device
+
+        self.err.show_err(_("USB redirection error"),
+                         text2=str(errstr),
+                         async=False)
+
+    def control_vm_usb_redirection(self, src):
+        ignore = src
+        spice_usbdev_dialog = self.err
+
+        spice_usbdev_widget = self.console.viewer.get_usb_widget()
+        if not spice_usbdev_widget:
+            self.err.show_err(_("Error initialize spice USB device widget"))
+            return
+
+        spice_usbdev_widget.connect("connect-failed",
+                                    self.spice_usbdev_rediret_error)
+        spice_usbdev_widget.show()
+        spice_usbdev_dialog.show_info_with_widget(_("Select USB devices for redirection"),
+                                                   widget=spice_usbdev_widget)
+
     def _take_screenshot(self):
         image = self.console.viewer.get_pixbuf()