diff --git a/elements/element.lua b/elements/element.lua
index b54d458..bdb15b5 100644
--- a/elements/element.lua
+++ b/elements/element.lua
@@ -159,6 +159,13 @@ do
     getPadding = function(self)
       return self.data.padding
     end,
+    indexOf = function(self, element)
+      for i = 1, #self.child do
+        if self.child[i] == element then
+          return i
+        end
+      end
+    end,
     delete = function(self)
       for i = #self.child, 1, -1 do
         self.child[i]:delete()
diff --git a/elements/element.moon b/elements/element.moon
index d5e5404..839ecef 100644
--- a/elements/element.moon
+++ b/elements/element.moon
@@ -206,6 +206,11 @@ class element
     getPadding: =>
         return @data.padding
 
+    indexOf: (element) =>
+        for i = 1, #@child
+            if @child[i] == element
+                return i
+
     --- Deletes references to this element and then deletes it.
     delete: =>
         for i=#@child, 1, -1
diff --git a/elements/window.lua b/elements/window.lua
index e52137e..d16b342 100644
--- a/elements/window.lua
+++ b/elements/window.lua
@@ -1,19 +1,195 @@
-local element = require(tostring((...):sub(1, -7)) .. "/element")
+local pop
+local mouse
+mouse = love.mouse
+local path = (...):sub(1, -7)
+local element = require(tostring(path) .. "/element")
+local box = require(tostring(path) .. "/box")
+local text = require(tostring(path) .. "/text")
 local window
 do
   local _class_0
   local _parent_0 = element
-  local _base_0 = { }
+  local _base_0 = {
+    load = function(pop_lib)
+      pop = pop_lib
+    end,
+    align = function(self, ...)
+      if not (self.data.align) then
+        return self
+      end
+      _class_0.__parent.__base.align(self, ...)
+      self.header:align()
+      self.title:align()
+      self.window_area:align()
+      self.window_area:move(nil, self.header:getHeight())
+      return self
+    end,
+    setSize = function(self, w, h)
+      local x = 0
+      local y = 0
+      if w then
+        local _exp_0 = self.data.horizontal
+        if "center" == _exp_0 then
+          x = x - ((w - self.data.w) / 2)
+        elseif "right" == _exp_0 then
+          x = x - (w - self.data.w)
+        end
+        self.header:setWidth(w)
+        self.window_area:setWidth(w)
+        self.data.w = w
+        self.data.x = self.data.x + x
+        self.title:align()
+      end
+      if h then
+        local _exp_0 = self.data.vertical
+        if "center" == _exp_0 then
+          y = y - ((h - self.data.h) / 2)
+        elseif "right" == _exp_0 then
+          y = y - (h - self.data.h)
+        end
+        self.window_area:setHeight(h - self.header:getHeight())
+        self.window_area:move(nil, self.header:getHeight())
+        self.data.h = h
+        self.data.y = self.data.y + y
+      end
+      self.header:move(x, y)
+      self.window_area:move(x, y)
+      return self
+    end,
+    setWidth = function(self, w)
+      return self:setSize(w)
+    end,
+    setHeight = function(self, h)
+      return self:setSize(nil, h)
+    end
+  }
   _base_0.__index = _base_0
   setmetatable(_base_0, _parent_0.__base)
   _class_0 = setmetatable({
-    __init = function(self, parent, data)
+    __init = function(self, parent, data, title)
       if data == nil then
         data = { }
       end
+      if title == nil then
+        title = "Window"
+      end
       self.parent, self.data = parent, data
       _class_0.__parent.__init(self, self.parent, self.data)
       self.data.type = "window"
+      if not (self.data.w > 0) then
+        self.data.w = 100
+      end
+      if not (self.data.h > 0) then
+        self.data.h = 80
+      end
+      if not (self.data.containMethod) then
+        self.data.containMethod = "mouse"
+      end
+      self.header = pop.box(self, self.data.titleBackground or {
+        25,
+        180,
+        230,
+        255
+      })
+      self.title = pop.text(self.header, {
+        horizontal = "center"
+      }, title, self.data.titleColor or {
+        255,
+        255,
+        255,
+        255
+      })
+      self.window_area = pop.box(self, self.data.windowBackground or {
+        200,
+        200,
+        210,
+        255
+      })
+      local height = self.title:getHeight()
+      self.header:setSize(self.data.w, height)
+      self.window_area:setSize(self.data.w, self.data.h - height)
+      self.window_area:move(nil, height)
+      self.window_area.mousepressed = function(x, y, button)
+        if button == pop.constants.left_mouse then
+          local grandparent = self.parent.parent
+          table.insert(grandparent.child, table.remove(grandparent.child, grandparent:indexOf(self.parent)))
+        end
+        return nil
+      end
+      self.window_area.clicked = function()
+        return nil
+      end
+      local selected = false
+      local mx = 0
+      local my = 0
+      self.header.mousemoved = function(self, x, y, dx, dy)
+        if selected then
+          self.parent:move(dx, dy)
+          local grandparent = self.parent.parent
+          local _exp_0 = self.parent.data.containMethod
+          if "title" == _exp_0 then
+            if self.data.x < grandparent.data.x then
+              self.parent:move(grandparent.data.x - self.data.x)
+            end
+            if self.data.y < grandparent.data.y then
+              self.parent:move(nil, grandparent.data.y - self.data.y)
+            end
+            if self.data.x + self.data.w > grandparent.data.x + grandparent.data.w then
+              self.parent:move(grandparent.data.x + grandparent.data.w - (self.data.x + self.data.w))
+            end
+            if self.data.y + self.data.h > grandparent.data.y + grandparent.data.h then
+              self.parent:move(nil, grandparent.data.y + grandparent.data.h - (self.data.y + self.data.h))
+            end
+          elseif "body" == _exp_0 then
+            if self.data.x < grandparent.data.x then
+              self.parent:move(grandparent.data.x - self.data.x)
+            end
+            if self.data.y < grandparent.data.y then
+              self.parent:move(nil, grandparent.data.y - self.data.y)
+            end
+            if self.parent.data.x + self.parent.data.w > grandparent.data.x + grandparent.data.w then
+              self.parent:move(grandparent.data.x + grandparent.data.w - (self.parent.data.x + self.parent.data.w))
+            end
+            if self.parent.data.y + self.parent.data.h > grandparent.data.y + grandparent.data.h then
+              self.parent:move(nil, grandparent.data.y + grandparent.data.h - (self.parent.data.y + self.parent.data.h))
+            end
+          elseif "mouse" == _exp_0 then
+            if mouse.getX() < grandparent.data.x then
+              self.parent:setPosition(grandparent.data.x + self.data.w - mx)
+            end
+            if mouse.getY() < grandparent.data.y then
+              self.parent:setPosition(nil, grandparent.data.y + self.parent.data.h - my)
+            end
+            if mouse.getX() > grandparent.data.x + grandparent.data.w then
+              self.parent:setPosition(grandparent.data.x + grandparent.data.w + self.data.w - mx)
+            end
+            if mouse.getY() > grandparent.data.y + grandparent.data.h then
+              self.parent:setPosition(nil, grandparent.data.y + grandparent.data.h + self.parent.data.h - my)
+            end
+          end
+          return true
+        end
+        return false
+      end
+      self.header.mousepressed = function(self, x, y, button)
+        if button == pop.constants.left_mouse then
+          local grandparent = self.parent.parent
+          table.insert(grandparent.child, table.remove(grandparent.child, grandparent:indexOf(self.parent)))
+          selected = true
+          mx = x
+          my = y
+          return true
+        end
+        return false
+      end
+      self.header.mousereleased = function(self, x, y, button)
+        if button == pop.constants.left_mouse then
+          selected = false
+          return true
+        end
+        return false
+      end
+      return self:align()
     end,
     __base = _base_0,
     __name = "window",
diff --git a/elements/window.moon b/elements/window.moon
index d76e91d..665ad35 100644
--- a/elements/window.moon
+++ b/elements/window.moon
@@ -3,17 +3,158 @@
 --- @classmod window
 --- @copyright Paul Liverman III (2016)
 --- @license The MIT License (MIT)
+--- @todo Implement missing features.
 
-element = require "#{(...)\sub 1, -7}/element"
+local pop
+
+import mouse from love
+
+path = (...)\sub 1, -7
+element = require "#{path}/element"
+box = require "#{path}/box"
+text = require "#{path}/text"
+
+-- images would go here
 
 class window extends element
+    load: (pop_lib) ->
+        pop = pop_lib
+
     --- Constructor expects nothing, or a data table describing it.
-    new: (@parent, @data={}) =>
+    --- @todo document containMethod values
+    new: (@parent, @data={}, title="Window") =>
         super @parent, @data
 
         @data.type = "window"
+        @data.w = 100 unless @data.w > 0
+        @data.h = 80 unless @data.h > 0
+        @data.containMethod = "mouse" unless @data.containMethod
 
-        --- @todo if data, do stuff about it
+        @header = pop.box @, @data.titleBackground or {25, 180, 230, 255}
+        @title = pop.text @header, {horizontal: "center"}, title, @data.titleColor or {255, 255, 255, 255}
+        @window_area = pop.box @, @data.windowBackground or {200, 200, 210, 255}
+        -- closeButton, minimizeButton, etc
 
-    --setSize: =>
-        --do more stuff!
+        height = @title\getHeight!
+        @header\setSize @data.w, height
+        @window_area\setSize @data.w, @data.h - height
+        @window_area\move nil, height
+
+        -- window area steals mouse events to prevent propagation to elements under it
+        @window_area.mousepressed = (x, y, button) ->
+            -- attempted to also make them pull to foreground, but it doesn't work
+            if button == pop.constants.left_mouse
+                grandparent = @parent.parent
+                table.insert grandparent.child, table.remove(grandparent.child, grandparent\indexOf @parent)
+            return nil
+        @window_area.clicked = ->
+            return nil
+
+        selected = false
+        mx = 0
+        my = 0
+
+        @header.mousemoved = (x, y, dx, dy) =>
+            if selected
+                @parent\move dx, dy
+                -- do not leave area of grandparent (based on containMethod)
+                grandparent = @parent.parent
+                switch @parent.data.containMethod
+                    when "title" -- the window title can't leave
+                        @parent\move(grandparent.data.x - @data.x) if @data.x < grandparent.data.x
+                        @parent\move(nil, grandparent.data.y - @data.y) if @data.y < grandparent.data.y
+                        @parent\move(grandparent.data.x + grandparent.data.w - (@data.x + @data.w)) if @data.x + @data.w > grandparent.data.x + grandparent.data.w
+                        @parent\move(nil, grandparent.data.y + grandparent.data.h - (@data.y + @data.h)) if @data.y + @data.h > grandparent.data.y + grandparent.data.h
+                    when "body" -- the entire window can't leave
+                        @parent\move(grandparent.data.x - @data.x) if @data.x < grandparent.data.x
+                        @parent\move(nil, grandparent.data.y - @data.y) if @data.y < grandparent.data.y
+                        @parent\move(grandparent.data.x + grandparent.data.w - (@parent.data.x + @parent.data.w)) if @parent.data.x + @parent.data.w > grandparent.data.x + grandparent.data.w
+                        @parent\move(nil, grandparent.data.y + grandparent.data.h - (@parent.data.y + @parent.data.h)) if @parent.data.y + @parent.data.h > grandparent.data.y + grandparent.data.h
+                    when "mouse" -- wherever the mouse has clicked can't leave
+                        @parent\setPosition(grandparent.data.x + @data.w - mx) if mouse.getX! < grandparent.data.x
+                        @parent\setPosition(nil, grandparent.data.y + @parent.data.h - my) if mouse.getY! < grandparent.data.y
+                        @parent\setPosition(grandparent.data.x + grandparent.data.w + @data.w - mx) if mouse.getX! > grandparent.data.x + grandparent.data.w
+                        @parent\setPosition(nil, grandparent.data.y + grandparent.data.h + @parent.data.h - my) if mouse.getY! > grandparent.data.y + grandparent.data.h
+                return true
+            return false
+
+        @header.mousepressed = (x, y, button) =>
+            if button == pop.constants.left_mouse
+                grandparent = @parent.parent
+                table.insert grandparent.child, table.remove(grandparent.child, grandparent\indexOf @parent)
+                selected = true
+                mx = x
+                my = y
+                return true
+            return false
+
+        @header.mousereleased = (x, y, button) =>
+            if button == pop.constants.left_mouse
+                selected = false
+                --pop.focused = false -- we have to manually clear our focus
+                return true
+            return false
+
+        -- unsure if needed or how needed
+        --@setSize @data.w, @data.h -- or 100, 80
+        @align!
+
+    align: (...) =>
+        unless @data.align return @
+        super ...
+
+        -- don't know if this is needed or why
+        --for i = 1, #@child
+        --    @child[i]\align!
+        @header\align!
+        @title\align!
+        @window_area\align!
+
+        @window_area\move nil, @header\getHeight!
+
+        return @
+
+    setSize: (w, h) =>
+        x = 0
+        y = 0
+
+        if w
+            switch @data.horizontal
+                when "center"
+                    x -= (w - @data.w) / 2
+                when "right"
+                    x -= w - @data.w
+
+            -- close button stuff
+
+            @header\setWidth w
+            @window_area\setWidth w
+            @data.w = w
+            @data.x += x
+
+            @title\align!
+
+            -- close button stuff 2 ?
+
+        if h
+            switch @data.vertical
+                when "center"
+                    y -= (h - @data.h) / 2
+                when "right"
+                    y -= h - @data.h
+
+            @window_area\setHeight h - @header\getHeight!
+            @window_area\move nil, @header\getHeight!
+            @data.h = h
+            @data.y += y
+
+        @header\move x, y
+        @window_area\move x, y
+
+        return @
+
+    setWidth: (w) =>
+        return @setSize w
+
+    setHeight: (h) =>
+        return @setSize nil, h
diff --git a/extensions/utility.lua b/extensions/utility.lua
index 4a3506f..7018e60 100644
--- a/extensions/utility.lua
+++ b/extensions/utility.lua
@@ -5,7 +5,7 @@ do
   local _obj_0 = string
   sub, len = _obj_0.sub, _obj_0.len
 end
-local path = sub(..., 1, len(...) - len("/extensions/streamlined_get_set"))
+local path = sub(..., 1, len(...) - len("/extensions/utility"))
 local element = require(tostring(path) .. "/elements/element")
 element.__base.fill = function(self)
   self.data.x = self.parent.data.x + self.data.padding
diff --git a/extensions/utility.moon b/extensions/utility.moon
index 566e279..12cf1ee 100644
--- a/extensions/utility.moon
+++ b/extensions/utility.moon
@@ -5,11 +5,12 @@
 import graphics from love
 import sub, len from string
 
-path = sub ..., 1, len(...) - len "/extensions/streamlined_get_set"
+path = sub ..., 1, len(...) - len "/extensions/utility"
 element = require "#{path}/elements/element"
 --box = require "#{path}/elements/box"
 --text = require "#{path}/elements/text"
 
+--- @todo make this built-in as maximize for window elements
 element.__base.fill = =>
   @data.x = @parent.data.x + @data.padding
   @data.y = @parent.data.y + @data.padding
diff --git a/init.lua b/init.lua
index 4ece8b3..6131954 100644
--- a/init.lua
+++ b/init.lua
@@ -134,7 +134,7 @@ pop.load = function(load_path)
       local name = extensions[i]:sub(1, -5)
       log("Requiring \"" .. tostring(name) .. "\" from \"" .. tostring(load_path) .. "/extensions/" .. tostring(name) .. "\"")
       pop.extensions[name] = require(tostring(load_path) .. "/extensions/" .. tostring(name))
-      if pop.extensions[name].load then
+      if type(pop.extensions[name]) == "table" and pop.extensions[name].load then
         pop.extensions[name].load(pop)
       end
       log("Extension loaded: \"" .. tostring(name) .. "\"")
@@ -226,10 +226,10 @@ pop.mousemoved = function(x, y, dx, dy, element)
 end
 pop.mousepressed = function(x, y, button, element)
   if not (element) then
-    if button == "wd" then
+    if button == pop.constants.mouse_wheel_down then
       pop.wheelmoved(0, -1)
       return true
-    elseif button == "wu" then
+    elseif button == pop.constants.mouse_wheel_up then
       pop.wheelmoved(0, 1)
       return true
     end
@@ -276,6 +276,22 @@ pop.mousereleased = function(x, y, button, element)
     end
   else
     log("mousereleased", x, y, button)
+    do
+      element = pop.focused
+      if element then
+        if element.data.draw and (x >= element.data.x) and (x <= element.data.x + element.data.w) and (y >= element.data.y) and (y <= element.data.y + element.data.h) then
+          if element.clicked then
+            clickedHandled = element:clicked(x - element.data.x, y - element.data.y, button)
+          end
+        end
+        if element.mousereleased then
+          mousereleasedHandled = element:mousereleased(x - element.data.x, y - element.data.y, button)
+        end
+        if clickedHandled ~= false or mousereleasedHandled ~= false then
+          return clickedHandled, mousereleasedHandled
+        end
+      end
+    end
     pop.mousereleased(x, y, button, pop.screen)
   end
   return clickedHandled, mousereleasedHandled
diff --git a/init.moon b/init.moon
index a4341b3..df96402 100644
--- a/init.moon
+++ b/init.moon
@@ -158,7 +158,7 @@ pop.load = (load_path=path) ->
         pop.extensions[name] = require "#{load_path}/extensions/#{name}"
 
         -- call the extension's load function if it exists
-        if pop.extensions[name].load
+        if type(pop.extensions[name]) == "table" and pop.extensions[name].load
             pop.extensions[name].load pop
 
         log "Extension loaded: \"#{name}\""
@@ -299,10 +299,10 @@ pop.mousepressed = (x, y, button, element) ->
     -- start at the screen, print that we received an event
     unless element
         -- take pre 0.10.0 wheel movement and pass it along
-        if button == "wd"
+        if button == pop.constants.mouse_wheel_down
           pop.wheelmoved 0, -1
           return true
-        elseif button == "wu"
+        elseif button == pop.constants.mouse_wheel_up
           pop.wheelmoved 0, 1
           return true
 
@@ -373,9 +373,20 @@ pop.mousereleased = (x, y, button, element) ->
                 --element.parent\focusChild element
                 --table.insert element.parent, element.parent\removeChild(element),
 
-    -- else, default to pop.screen to begin! (and print that we received an event)
+    -- else, check for focused element, and then default to pop.screen to begin! (and print that we received an event)
     else
         log "mousereleased", x, y, button
+
+        if element = pop.focused
+            if element.data.draw and (x >= element.data.x) and (x <= element.data.x + element.data.w) and (y >= element.data.y) and (y <= element.data.y + element.data.h)
+                if element.clicked
+                    clickedHandled = element\clicked x - element.data.x, y - element.data.y, button
+            -- a focused element needs to know when it has been released no matter what!
+            if element.mousereleased
+                mousereleasedHandled = element\mousereleased x - element.data.x, y - element.data.y, button
+            if clickedHandled != false or mousereleasedHandled != false
+                return clickedHandled, mousereleasedHandled
+
         pop.mousereleased x, y, button, pop.screen
 
     return clickedHandled, mousereleasedHandled
diff --git a/main.lua b/main.lua
index 04505b2..03cfa4c 100644
--- a/main.lua
+++ b/main.lua
@@ -2,6 +2,13 @@ local pop = require("")
 local debug = false
 love.load = function()
   pop.text("Hello World!"):align("center", "center")
+  pop.window({
+    windowBackground = {
+      200,
+      200,
+      200
+    }
+  }, "Testing Window"):move(20, 20):setSize(200, 100):align("right", "top")
   local centerBox = pop.box({
     w = 200,
     h = 200
@@ -129,12 +136,27 @@ love.load = function()
     }
   }):align("right", "bottom")
 end
+love.update = function(dt)
+  return pop.update(dt)
+end
 love.draw = function()
   pop.draw()
   if debug then
     return pop.debugDraw()
   end
 end
+love.mousemoved = function(x, y, dx, dy)
+  return pop.mousemoved(x, y, dx, dy)
+end
+love.mousepressed = function(x, y, button)
+  return pop.mousepressed(x, y, button)
+end
+love.mousereleased = function(x, y, button)
+  return pop.mousereleased(x, y, button)
+end
+love.wheelmoved = function(x, y)
+  return pop.wheelmoved(x, y)
+end
 love.keypressed = function(key)
   if key == "escape" then
     return love.event.quit()
@@ -142,3 +164,9 @@ love.keypressed = function(key)
     debug = not debug
   end
 end
+love.keyreleased = function(key)
+  return pop.keyreleased(key)
+end
+love.textinput = function(text)
+  return pop.textinput(text)
+end
diff --git a/main.moon b/main.moon
index b6b37f6..eaa0ca4 100644
--- a/main.moon
+++ b/main.moon
@@ -7,6 +7,7 @@ debug = false
 
 love.load = ->
     pop.text("Hello World!")\align "center", "center"
+    pop.window({windowBackground: {200, 200, 200}}, "Testing Window")\move(20, 20)\setSize(200, 100)\align "right", "top"
 
     -- alignment testing
     centerBox = pop.box({w: 200, h: 200}, {255, 255, 0, 120})\align "center", "center"
@@ -28,18 +29,37 @@ love.load = ->
     pop.text(centerBox, {padding: 5, color: {0, 0, 255, 100}}, "Align me!")\align "right", "top"
     pop.window(centerBox, {padding: 5, titleColor: {0, 0, 0, 150}, titleBackground: {0, 0, 255, 100}, windowBackground: {200, 200, 255, 100}})\align "right", "bottom"
 
---- @todo finish writing callbacks!
+love.update = (dt) ->
+    pop.update dt
 
 love.draw = ->
     pop.draw!
     pop.debugDraw! if debug
 
+love.mousemoved = (x, y, dx, dy) ->
+    pop.mousemoved x, y, dx, dy
+
+love.mousepressed = (x, y, button) ->
+    pop.mousepressed x, y, button
+
+love.mousereleased = (x, y, button) ->
+    pop.mousereleased x, y, button
+
+love.wheelmoved = (x, y) ->
+    pop.wheelmoved x, y
+
 love.keypressed = (key) ->
     if key == "escape"
         love.event.quit!
     elseif key == "d"
         debug = not debug
 
+love.keyreleased = (key) ->
+    pop.keyreleased key
+
+love.textinput = (text) ->
+    pop.textinput text
+
 
 
 -- NOTE TEMPORARY