Show pfUI's dropdowns and menus with ClassicAPI's menu system

pfUIDropdownTemplate (a DropdownButton) replaces CreateDropDownButton in
the config GUI, addon profiles, the trigger editor and the icon picker
filter. The equipment set gear menu and the tracking menu open
MenuUtil context menus. pfUIMenuStyleMixin draws pfUI's backdrop behind
them, and the skin module makes it the default style and draws the
checkboxes and radios as pfUI boxes.

modules/addons.lua

@@ -110,6 +110,12 @@ pfUI:RegisterModule("addons", function ()
     return selected_addons
   end
 
+  local selectedProfile
+
+  local function IsSelectedProfile(profile)
+    return profile == selectedProfile
+  end
+
   local function SetAddonProfile(profile)
     -- create new profile if not existing
     if not pfUI_addon_profiles[profile] then
@@ -117,7 +123,8 @@ pfUI:RegisterModule("addons", function ()
     end
 
     -- set dropdown to profile
-    pfUI.addons.profile.dropdown:SetSelectionByText(profile)
+    selectedProfile = profile
+    pfUI.addons.profile.dropdown:GenerateMenu()
 
     -- load profile
     local selected = {}
@@ -163,7 +170,7 @@ pfUI:RegisterModule("addons", function ()
   pfUI.addons.profile.del:SetText("-")
   pfUI.addons.profile.del:SetTextColor(1,.5,.5,1)
   pfUI.addons.profile.del:SetScript("OnClick", function() -- TODO
-    local id, name = pfUI.addons.profile.dropdown:GetSelection()
+    local name = selectedProfile
     if not name then return end
     CreateQuestionDialog(T["Delete profile"] .. " '|cff33ffcc" .. name .. "|r'?", function()
       pfUI_addon_profiles[name] = nil
@@ -193,26 +200,13 @@ pfUI:RegisterModule("addons", function ()
   end)
 
   -- addon profile: dropdown
-  pfUI.addons.profile.dropdown = CreateDropDownButton("pfAddonListProfileList", pfUI.addons.profile)
-  pfUI.addons.profile.dropdown:SetBackdrop(nil)
-  pfUI.addons.profile.dropdown:ClearAllPoints()
+  pfUI.addons.profile.dropdown = CreateFrame("DropdownButton", nil, pfUI.addons.profile, "pfUIDropdownTemplate")
   pfUI.addons.profile.dropdown:SetPoint("RIGHT", pfUI.addons.profile.add, "LEFT", -2, 0)
   pfUI.addons.profile.dropdown:SetWidth(220)
-  pfUI.addons.profile.dropdown:SetMenu(function()
-    local menu = {}
-
-    for name, list in pairs(pfUI_addon_profiles) do
-      local name = name
-      local entry = {}
-      entry.text = name
-      entry.checked = false
-      entry.func = function()
-        SetAddonProfile(name)
-      end
-      table.insert(menu, entry)
+  pfUI.addons.profile.dropdown:SetupMenu(function(dropdown, rootDescription)
+    for name in pairs(pfUI_addon_profiles) do
+      rootDescription:CreateRadio(name, IsSelectedProfile, SetAddonProfile, name)
     end
-
-    return menu
   end)
 
   local function AddDependencyLines(header, deps)
@@ -263,9 +257,7 @@ pfUI:RegisterModule("addons", function ()
   local function InputOnClick(self)
     SetAddonEnabled(self:GetParent().addon.index, self:GetChecked())
 
-    local _, name = pfUI.addons.profile.dropdown:GetSelection()
-    name = name or T["Current"]
-    pfUI_addon_profiles[name] = GetSelectedAddonsList()
+    pfUI_addon_profiles[selectedProfile or T["Current"]] = GetSelectedAddonsList()
   end
 
   local function InitRow(row, addon)