src/*.vala: make the switch item & action QMenuModel compatible

QMenuModel, inheritting code from GTK, will consider the menu item not
"activatable" if the item's "target" [1] doesn't match the corresponding
action's parameter. Since we take a boolean as action's parameter (and
we can't change action's parameter easily since it's semi-public), we
instead have to pass "target".

Taking a page from the slider menu items, pass "true" as the target
will make QMenuModel considers the item activatable and reflect the
right state.

And while we're at it, restore the ability to use g_action_change_state
to change the state. This allows the clients that still support
Canonical's indicator (e.g. Lomiri) to not have to distinguish between
that and Ayatana's. This, again, is taken from how the slider menu items
work.

[1] i.e. the parameter to pass when activating the action. See
https://wiki.gnome.org/Projects/GLib/GApplication/DBusAPI#Attributes

Related: https://github.com/AyatanaIndicators/qmenumodel/issues/21

2 files changed, 18 insertions, 9 deletions

diff --git a/src/desktop.vala b/src/desktop.vala
index ae9b0db..c70d49a 100644
--- a/src/desktop.vala
+++ b/src/desktop.vala
@@ -106,7 +106,7 @@ class Desktop: Profile
     var id = device.id;
     var action_name = @"desktop-device-$(id)-connected";
 
-    var item = new MenuItem (_("Connection"), @"indicator.$action_name");
+    var item = new MenuItem (_("Connection"), @"indicator.$(action_name)(true)");
     item.set_attribute ("x-ayatana-type",
                         "s", "org.ayatana.indicator.switch");
 
@@ -118,8 +118,11 @@ class Desktop: Profile
                                            VariantType.BOOLEAN,
                                            new Variant.boolean (device.is_connected));
 
-        a.activate.connect ((action, state)
-          => bluetooth.set_device_connected (id, state.get_boolean()));
+        a.activate.connect ((action, param)
+          => a.change_state (param));
+
+        a.change_state.connect ((action, requestedValue)
+          => bluetooth.set_device_connected (id, requestedValue.get_boolean()));
 
         connect_actions.insert (device.id, a);
         action_group.add_action (a);
@@ -223,7 +226,7 @@ class Desktop: Profile
     // quick toggles section
     section = new Menu ();
     section.append_item (create_enabled_menuitem ());
-    item = new MenuItem (_("Visible"), "indicator.desktop-discoverable");
+    item = new MenuItem (_("Visible"), "indicator.desktop-discoverable(true)");
     item.set_attribute ("x-ayatana-type", "s",
                         "org.ayatana.indicator.switch");
     section.append_item (item);
@@ -271,8 +274,11 @@ class Desktop: Profile
                                             VariantType.BOOLEAN,
                                             new Variant.boolean (bluetooth.discoverable));
 
-    action.activate.connect ((action, state)
-        => bluetooth.try_set_discoverable (state.get_boolean()));
+    action.activate.connect ((action, param)
+        => action.change_state (param));
+
+    action.change_state.connect ((action, requestedValue)
+        => bluetooth.try_set_discoverable (requestedValue.get_boolean()));
 
     bluetooth.notify["discoverable"].connect (()
         => action.set_state (new Variant.boolean (bluetooth.discoverable)));
diff --git a/src/profile.vala b/src/profile.vala
index 708a3f0..69de0c5 100644
--- a/src/profile.vala
+++ b/src/profile.vala
@@ -86,7 +86,7 @@ class Profile: Object
 
   protected MenuItem create_enabled_menuitem ()
   {
-    var item = new MenuItem (_("Bluetooth"), "indicator.bluetooth-enabled");
+    var item = new MenuItem (_("Bluetooth"), "indicator.bluetooth-enabled(true)");
 
     item.set_attribute ("x-ayatana-type", "s",
                         "org.ayatana.indicator.switch");
@@ -126,8 +126,11 @@ class Profile: Object
                                             VariantType.BOOLEAN,
                                             new Variant.boolean (bluetooth.enabled));
 
-    action.activate.connect ((action, state)
-        => bluetooth.try_set_enabled (state.get_boolean()));
+    action.activate.connect ((action, param)
+        => action.change_state (param));
+
+    action.change_state.connect ((action, requestedValue)
+        => bluetooth.try_set_enabled (requestedValue.get_boolean()));
 
     bluetooth.notify["enabled"].connect (()
         => action.set_state (new Variant.boolean (bluetooth.enabled)));