restore old modules

* partially restore vip, battle, healthbar, skills and inventory modules
* more fixes on UIWidgets
* implement UIMiniWindow close/minimize functionality
* allow drag and drop miniwindows beteween game panels

modules/game/widgets/uiitem.lua

@@ -27,7 +27,7 @@ end
 function UIItem:onDrop(widget, mousePos)
   if self:isVirtual() then return false end
 
-  if not widget or not widget.currentDragThing then return true end
+  if not widget or not widget.currentDragThing then return false end
 
   local pos = self.position
   local count = widget.currentDragThing:getCount()

modules/game/widgets/uiminiwindow.lua

@@ -2,10 +2,16 @@ UIMiniWindow = extends(UIWindow)
 
 function UIMiniWindow.create()
   local miniwindow = UIMiniWindow.internalCreate()
-  miniwindow:setFocusable(false)
   return miniwindow
 end
 
+function UIMiniWindow:onSetup()
+  addEvent(function()
+    self:getChildById('closeButton').onClick = function() signalcall(self.onClose, self) end
+    self:getChildById('minimizeButton').onClick = function() signalcall(self.onMinimize, self) end
+  end)
+end
+
 function UIMiniWindow:onDragEnter(mousePos)
   local parent = self:getParent()
   if not parent then return false end
@@ -19,9 +25,19 @@ function UIMiniWindow:onDragEnter(mousePos)
   local oldPos = self:getPosition()
   self.movingReference = { x = mousePos.x - oldPos.x, y = mousePos.y - oldPos.y }
   self:setPosition(oldPos)
+  self.free = true
   return true
 end
 
+function UIMiniWindow:onMousePress()
+  local parent = self:getParent()
+  if not parent then return false end
+  if parent:getClassName() ~= 'UIMiniWindowContainer' then
+    self:raise()
+    return true
+  end
+end
+
 function UIMiniWindow:onDragLeave(droppedWidget, mousePos)
   -- TODO: drop on other interfaces
 end
@@ -35,3 +51,25 @@ function UIMiniWindow:onFocusChange(focused)
   end
 end
 
+function UIMiniWindow:onClose()
+end
+
+function UIMiniWindow:onMinimize()
+  if self:isOn() then
+    self:setOn(false)
+    self:getChildById('contentsPanel'):show()
+    self:getChildById('miniwindowScrollBar'):show()
+    self:getChildById('bottomResizeBorder'):show()
+    self:getChildById('minimizeButton'):setOn(false)
+    self:setHeight(self.savedHeight)
+  else
+    self.savedHeight = self:getHeight()
+    self:setHeight(self.minimizedHeight)
+    self:setOn(true)
+    self:getChildById('contentsPanel'):hide()
+    self:getChildById('miniwindowScrollBar'):hide()
+    self:getChildById('bottomResizeBorder'):hide()
+    self:getChildById('minimizeButton'):setOn(true)
+  end
+end
+

modules/game/widgets/uiminiwindowcontainer.lua

@@ -8,7 +8,8 @@ function UIMiniWindowContainer.create()
 end
 
 function UIMiniWindowContainer:onDrop(widget, mousePos)
-  print 'drop'
+  widget:setParent(self)
+  return true
 end
 
 function UIMiniWindowContainer:getClassName()