Support DruidManaBar current value text

mods/unitframes-bighealth.lua

@@ -172,6 +172,79 @@ module.enable = function(self)
     UpdateUnitValues("player")
     UpdateUnitValues("target")
 
+    -- DruidManaBar is a separate addon/frame used to keep mana visible while
+    -- shapeshifted. Its TextStatusBar normally renders "current / max", so give
+    -- it the same current-value-only presentation as Big Health.
+    ShaguTweaks.HookAddonOrVariable("DruidManaBar", function()
+      local bar = _G.DruidManaBar
+      if not bar then return end
+
+      if bar.text then
+        bar.text:SetAlpha(0)
+      elseif bar.TextString then
+        bar.TextString:SetAlpha(0)
+      end
+
+      if not self.druidManaText then
+        self.druidManaText = bar:CreateFontString(nil, "OVERLAY", "GameFontWhite")
+        self.druidManaText:SetFont(STANDARD_TEXT_FONT, 10, "OUTLINE")
+        self.druidManaText:SetHeight(32)
+        self.druidManaText:SetPoint("CENTER", bar, "CENTER", 0, 0)
+        self.druidManaText:SetJustifyH("CENTER")
+        self.druidManaText:SetTextColor(1, 1, 1, 1)
+      end
+
+      local function UpdateDruidManaText()
+        if not bar:IsShown() then
+          self.druidManaText:Hide()
+          return
+        end
+
+        local value
+        local max
+        if _G.DruidManaLib and _G.DruidManaLib.GetMana and _G.DruidManaLib.GetMaxMana then
+          value = _G.DruidManaLib:GetMana()
+          max = _G.DruidManaLib:GetMaxMana()
+        else
+          value = bar:GetValue()
+          local _, barMax = bar:GetMinMaxValues()
+          max = barMax
+        end
+
+        if not max or max <= 0 then
+          self.druidManaText:Hide()
+          return
+        end
+
+        self.druidManaText:SetText(tostring(value or 0))
+        self.druidManaText:Show()
+      end
+
+      if not self.druidManaEvents then
+        self.druidManaEvents = CreateFrame("Frame")
+        self.druidManaEvents:RegisterEvent("PLAYER_ENTERING_WORLD")
+        self.druidManaEvents:RegisterEvent("PLAYER_AURAS_CHANGED")
+        self.druidManaEvents:RegisterEvent("UNIT_DISPLAYPOWER")
+        self.druidManaEvents:RegisterEvent("UNIT_MANA")
+        self.druidManaEvents:RegisterEvent("UNIT_MAXMANA")
+        self.druidManaEvents:SetScript("OnEvent", function()
+          if event == "PLAYER_ENTERING_WORLD" or event == "PLAYER_AURAS_CHANGED"
+            or not arg1 or arg1 == "player" then
+            UpdateDruidManaText()
+          end
+        end)
+      end
+
+      -- DruidManaBar can update after the shared event dispatch. Hook its value
+      -- write as the authoritative final refresh without polling every frame.
+      if not self.druidManaValueHooked and bar.SetValue then
+        self.druidManaValueHooked = true
+        hooksecurefunc(bar, "SetValue", UpdateDruidManaText)
+      end
+
+      UpdateDruidManaText()
+    end)
+
     local playerSetStatusBarColor = PlayerFrameHealthBar.SetStatusBarColor
     local targetSetStatusBarColor = TargetFrameHealthBar.SetStatusBarColor