diff --git a/graphs/wrapper.py b/graphs/wrapper.py
index 7cc3a1d4f..1ca277f19 100644
--- a/graphs/wrapper.py
+++ b/graphs/wrapper.py
@@ -22,6 +22,7 @@ import math
 
 from eos.saveddata.fit import Fit
 from eos.saveddata.targetProfile import TargetProfile
+from service.const import TargetResistMode
 
 
 class BaseWrapper:
@@ -99,7 +100,51 @@ class TargetWrapper(BaseWrapper):
 
     def __init__(self, item):
         super().__init__(item=item)
-        self.resistMode = None
+        self.__resistMode = TargetResistMode.auto
+
+    @property
+    def resistMode(self):
+        return self.__resistMode
+
+    @resistMode.setter
+    def resistMode(self, value):
+        self.__resistMode = value
+
+    def getResists(self):
+        if self.isProfile:
+            em = self.item.emAmount
+            therm = self.item.thermalAmount
+            kin = self.item.kineticAmount
+            explo = self.item.explosiveAmount
+            return em, therm, kin, explo
+        if self.isFit:
+            if self.resistMode == TargetResistMode.auto:
+                return 0, 0, 0, 0
+            elif self.resistMode == TargetResistMode.shield:
+                return _getShieldResists(self.item.ship)
+            elif self.resistMode == TargetResistMode.armor:
+                return _getArmorResists(self.item.ship)
+            elif self.resistMode == TargetResistMode.hull:
+                return _getHullResists(self.item.ship)
+            elif self.resistMode == TargetResistMode.weighedAverage:
+                shieldEmRes, shieldThermRes, shieldKinRes, shieldExploRes = _getShieldResists(self.item.ship)
+                armorEmRes, armorThermRes, armorKinRes, armorExploRes = _getArmorResists(self.item.ship)
+                hullEmRes, hullThermRes, hullKinRes, hullExploRes = _getHullResists(self.item.ship)
+                hpData = self.item.hp
+                shieldHp = hpData['shield']
+                armorHp = hpData['armor']
+                hullHp = hpData['hull']
+                totalHp = shieldHp + armorHp + hullHp
+                totalEhpEm = shieldHp / (1 - shieldEmRes) + armorHp / (1 - armorEmRes) + hullHp / (1 - hullEmRes)
+                totalEhpTherm = shieldHp / (1 - shieldThermRes) + armorHp / (1 - armorThermRes) + hullHp / (1 - hullThermRes)
+                totalEhpKin = shieldHp / (1 - shieldKinRes) + armorHp / (1 - armorKinRes) + hullHp / (1 - hullKinRes)
+                totalEhpExplo = shieldHp / (1 - shieldExploRes) + armorHp / (1 - armorExploRes) + hullHp / (1 - hullExploRes)
+                weighedEmRes = 1 - totalHp / totalEhpEm
+                weighedThermRes = 1 - totalHp / totalEhpTherm
+                weighedKinRes = 1 - totalHp / totalEhpKin
+                weighedExploRes = 1 - totalHp / totalEhpExplo
+                return weighedEmRes, weighedThermRes, weighedKinRes, weighedExploRes
+        return 0, 0, 0, 0
 
 
 # Just copy-paste penalization chain calculation code (with some modifications,
@@ -125,3 +170,27 @@ def _calculateMultiplier(multipliers):
                 bonus = l[i]
                 val *= 1 + (bonus - 1) * math.exp(- i ** 2 / 7.1289)
     return val
+
+
+def _getShieldResists(ship):
+    em = 1 - ship.getModifiedItemAttr('shieldEmDamageResonance')
+    therm = 1 - ship.getModifiedItemAttr('shieldThermalDamageResonance')
+    kin = 1 - ship.getModifiedItemAttr('shieldKineticDamageResonance')
+    explo = 1 - ship.getModifiedItemAttr('shieldExplosiveDamageResonance')
+    return em, therm, kin, explo
+
+
+def _getArmorResists(ship):
+    em = 1 - ship.getModifiedItemAttr('armorEmDamageResonance')
+    therm = 1 - ship.getModifiedItemAttr('armorThermalDamageResonance')
+    kin = 1 - ship.getModifiedItemAttr('armorKineticDamageResonance')
+    explo = 1 - ship.getModifiedItemAttr('armorExplosiveDamageResonance')
+    return em, therm, kin, explo
+
+
+def _getHullResists(ship):
+    em = 1 - ship.getModifiedItemAttr('emDamageResonance')
+    therm = 1 - ship.getModifiedItemAttr('thermalDamageResonance')
+    kin = 1 - ship.getModifiedItemAttr('kineticDamageResonance')
+    explo = 1 - ship.getModifiedItemAttr('explosiveDamageResonance')
+    return em, therm, kin, explo
diff --git a/service/const.py b/service/const.py
index 06f64bc80..056975543 100644
--- a/service/const.py
+++ b/service/const.py
@@ -17,7 +17,7 @@
 # along with pyfa.  If not, see <http://www.gnu.org/licenses/>.
 # =============================================================================
 
-from enum import Enum, IntEnum, unique, auto
+from enum import Enum, IntEnum, unique, auto as autoId
 
 
 @unique
@@ -96,20 +96,20 @@ class GuiAttrGroup(IntEnum):
     This enum is used for GUI functions and getting redefined in
     /gui/builtinItemStatsViews/attributeGrouping.py
     """
-    FITTING = auto()
-    STRUCTURE = auto()
-    SHIELD = auto()
-    ARMOR = auto()
-    TARGETING = auto()
-    EWAR_RESISTS = auto()
-    CAPACITOR = auto()
-    SHARED_FACILITIES = auto()
-    FIGHTER_FACILITIES = auto()
-    ON_DEATH = auto()
-    JUMP_SYSTEMS = auto()
-    PROPULSIONS = auto()
-    FIGHTERS = auto()
-    SHIP_GROUP = auto()
+    FITTING = autoId()
+    STRUCTURE = autoId()
+    SHIELD = autoId()
+    ARMOR = autoId()
+    TARGETING = autoId()
+    EWAR_RESISTS = autoId()
+    CAPACITOR = autoId()
+    SHARED_FACILITIES = autoId()
+    FIGHTER_FACILITIES = autoId()
+    ON_DEATH = autoId()
+    JUMP_SYSTEMS = autoId()
+    PROPULSIONS = autoId()
+    FIGHTERS = autoId()
+    SHIP_GROUP = autoId()
 
 
 @unique
@@ -121,10 +121,19 @@ class GraphDpsDroneMode(IntEnum):
 
 @unique
 class GraphCacheCleanupReason(IntEnum):
-    fitChanged = auto()
-    fitRemoved = auto()
-    profileChanged = auto()
-    profileRemoved = auto()
-    graphSwitched = auto()
-    inputChanged = auto()
-    optionChanged = auto()
+    fitChanged = autoId()
+    fitRemoved = autoId()
+    profileChanged = autoId()
+    profileRemoved = autoId()
+    graphSwitched = autoId()
+    inputChanged = autoId()
+    optionChanged = autoId()
+
+
+@unique
+class TargetResistMode(IntEnum):
+    auto = autoId()
+    shield = autoId()
+    armor = autoId()
+    hull = autoId()
+    weighedAverage = autoId()