Allow mouse keybinds to be configured

src/types/unitframe.lua

@@ -58,6 +58,8 @@ function UnitFrame:Init(unit, config)
     local secure = self:CreateSecureFrame(width, height)
     secure:Hide()
 
+    self:SetMouseBinds(config.mouse)
+
     self.hp = StatusBar:new(self, width, height, 0, true)
     self.power = StatusBar:new(self, width, 6, 2, false)
     self.power:Hide()
@@ -185,21 +187,51 @@ function UnitFrame:SetMacroAction(button, macro)
     secure:SetAttribute(attributeName, macro:gsub("@UNIT", "@" .. self.unit))
 end
 
-function UnitFrame:PrepareWheelBinds()
+local function ModifiersToPrefix(mods)
+    if not mods then
+        return ""
+    end
+
+    local result = {}
+    if mods.ctrl then
+        table.insert(result, "CTRL-")
+    end
+    if mods.shift then
+        table.insert(result, "SHIFT-")
+    end
+    if mods.alt then
+        table.insert(result, "ALT-")
+    end
+    return table.concat(result, "")
+end
+
+function UnitFrame:PrepareWheelBinds(bindings)
     -- By default you can't use the SecureUnitButtonTemplate to handle scroll
     -- wheel "clicks". We solve this by using SecureHandler*Template to bind
     -- scroll wheel to the current unit frame button when the mouse enters and
     -- to unbind it when the mouse leaves. When the keybind is triggered the
     -- button will receive a click with a custom button name
-
+    
+    -- Build a table with all lines of the scroll wheel + modifier combinations
+    -- we want to bind, then concat it with newlines into a full script
+    local unit = self.unit
+    local bindScript = {
+        [[self:ClearBindings()]],
+    }
+    for _, bind in ipairs(bindings) do
+        if bind.button == "wheel-up" or bind.button == "wheel-down" then
+            local prefix = ModifiersToPrefix(bind.mods)
+            local button = bind.button == "wheel-up" and "MOUSEWHEELUP" or "MOUSEWHEELDOWN"
+            table.insert(bindScript,
+                string.format([[self:SetBindingClick(false, "%s%s", "OmicronSecureFrame%s", "%s%s")]], 
+                    prefix, button, unit, prefix, bind.button
+                ) 
+            )
+        end
+    end
+    
     local secure = self.secureFrame
-    local bindScript = ([[
-        self:ClearBindings()
-        self:SetBindingClick(false, "MOUSEWHEELUP", "BUTTONNAME", "wheel-up")
-        self:SetBindingClick(false, "MOUSEWHEELDOWN", "BUTTONNAME", "wheel-down")
-        self:SetBindingClick(false, "ALT-MOUSEWHEELUP", "BUTTONNAME", "alt-wheel-up")
-        self:SetBindingClick(false, "ALT-MOUSEWHEELDOWN", "BUTTONNAME", "alt-wheel-down")
-    ]]):gsub("BUTTONNAME", "OmicronSecureFrame" .. self.unit)
+    local bindScript = table.concat(bindScript, "\n")
 
     local removeBindScript = [[
         self:ClearBindings()
@@ -210,6 +242,42 @@ function UnitFrame:PrepareWheelBinds()
     secure:SetAttribute("_onhide", removeBindScript)
 end
 
+function UnitFrame:SetMouseBinds(binds)
+    local secure = self.secureFrame
+    local unit = self.unit
+
+    secure:RegisterForClicks("AnyDown")
+    self:PrepareWheelBinds(binds)
+    
+    for _, bind in ipairs(binds) do
+        local prefix = ModifiersToPrefix(bind.mods)
+        local button
+        -- This is kind of a mess but there are two options for attribute names
+        -- in the normal click case (mouse1, mouse2, etc) we have to put the
+        -- modifiers before type so it would become SHIFT-type1 for mouse1 with
+        -- shift
+        --
+        -- Since scroll wheel is not supported here and we manually create
+        -- click events with global scroll wheel binds while we are moused over
+        -- the unit frame they receive the modifiers after the type so it would become
+        -- type-SHIFT-wheel-up for wheel-up with shift
+        if bind.button:find("mouse", 1, true) == 1 then
+            button = prefix .. bind.button:gsub("^mouse", "type")
+        elseif bind.button:find("wheel", 1, true) == 1 then
+            button = "type-" .. prefix .. bind.button
+        else
+            error("Keybinds were invalid")
+        end
+        if bind.kind == "macro" then
+            self:SetMacroAction(button, bind.data)
+        elseif bind.kind == "spell" then
+            self:SetSpellAction(button, bind.data) 
+        else
+            secure:SetAttribute(button, bind.kind)
+        end
+    end
+end
+
 function UnitFrame:CreateSecureFrame(width, height)
     local name = "OmicronSecureFrame" .. self.unit
     local templates = table.concat({
@@ -222,26 +290,8 @@ function UnitFrame:CreateSecureFrame(width, height)
     secure:SetFrameStrata("MEDIUM")
     secure:SetFrameLevel(0)
     secure:SetAttribute("unit", self.unit)
-
     secure:SetSize(width, height)
 
-    secure:RegisterForClicks("AnyDown")
-    self:PrepareWheelBinds()
-
-    -- No modifiers
-    secure:SetAttribute("type1", "target")
-    self:SetMacroAction("type2", "/use [@UNIT,dead,help]Ancestral Vision; [@UNIT]Chain Heal")
-    self:SetMacroAction("type3", "/use [@UNIT,dead,help]Ancestral Spirit; [@UNIT]Purify Spirit")
-    self:SetMacroAction("type-wheel-up", "/use [@UNIT]Healing Surge")
-    self:SetMacroAction("type-wheel-down", "/use [@UNIT,help]Riptide")
-
-    -- alt
-    self:SetSpellAction("type-alt-wheel-up", "Healing Wave")
-    self:SetSpellAction("type-alt-wheel-down", "Earth Shield")
-
-    -- Shift
-    secure:SetAttribute("SHIFT-type2", "togglemenu")
-
     return secure
 end