Implement #261

modules/corelib/ui/uispinbox.lua

@@ -118,6 +118,10 @@ function UISpinBox:setValue(value)
   signalcall(self.onValueChange, self, value)
 end
 
+function UISpinBox:getValue()
+  return self.value
+end
+
 function UISpinBox:setMinimum(minimum)
   minimum = minimum or -9223372036854775808
   self.minimum = minimum
@@ -129,6 +133,10 @@ function UISpinBox:setMinimum(minimum)
   end
 end
 
+function UISpinBox:getMinimum()
+  return self.minimum
+end
+
 function UISpinBox:setMaximum(maximum)
   maximum = maximum or 9223372036854775807
   self.maximum = maximum
@@ -137,10 +145,10 @@ function UISpinBox:setMaximum(maximum)
   end
 end
 
-function UISpinBox:setStep(step)
-  self.step = step or 1
+function UISpinBox:getMaximum()
+  return self.maximum
 end
 
-function UISpinBox:getValue()
-  return self.value
+function UISpinBox:setStep(step)
+  self.step = step or 1
 end

modules/game_interface/gameinterface.lua

@@ -591,12 +591,24 @@ function moveStackableItem(item, toPos)
   spinbox:setValue(0)
   spinbox:hideButtons()
   spinbox:focus()
+  spinbox.firstEdit = true
 
   local spinBoxValueChange = function(self, value)
     scrollbar:setValue(value)
   end
   spinbox.onValueChange = spinBoxValueChange
 
+  local check = function()
+    if spinbox.firstEdit then
+      spinbox:setValue(spinbox:getMaximum())
+      spinbox.firstEdit = false
+    end
+  end
+  g_keyboard.bindKeyPress("Up", function() check() spinbox:up() end, spinbox)
+  g_keyboard.bindKeyPress("Down", function() check() spinbox:down() end, spinbox)
+  g_keyboard.bindKeyPress("PageUp", function() check() spinbox:setValue(spinbox:getValue()+10) end, spinbox)
+  g_keyboard.bindKeyPress("PageDown", function() check() spinbox:setValue(spinbox:getValue()-10) end, spinbox)
+
   scrollbar.onValueChange = function(self, value)
     itembox:setItemCount(value)
     spinbox.onValueChange = nil