Resolve "Merge the best from 7.40 branch"

SabrehavenOTClient/modules/game_buttons/buttons.lua

@@ -0,0 +1,49 @@
+buttonsWindow = nil
+contentsPanel = nil
+
+function init()
+  buttonsWindow = g_ui.loadUI('buttons', modules.game_interface.getRightPanel())
+  buttonsWindow:disableResize()
+  buttonsWindow:setup()
+  contentsPanel = buttonsWindow.contentsPanel
+  if not buttonsWindow.forceOpen or not contentsPanel.buttons then
+    buttonsWindow:close()
+  end
+end
+
+function terminate()
+  buttonsWindow:destroy()
+end
+
+function takeButtons(buttons)
+  if not buttonsWindow.forceOpen or not contentsPanel.buttons then return end
+  for i, button in ipairs(buttons) do
+    takeButton(button, true)
+  end
+  updateOrder()
+end
+
+function takeButton(button, dontUpdateOrder)
+  if not buttonsWindow.forceOpen or not contentsPanel.buttons then return end
+  button:setParent(contentsPanel.buttons)
+  if not dontUpdateOrder then
+    updateOrder()
+  end
+end
+
+function updateOrder()
+   local children = contentsPanel.buttons:getChildren()
+   table.sort(children, function(a, b)
+    return (a.index or 1000) < (b.index or 1000)
+   end)
+   contentsPanel.buttons:reorderChildren(children)
+   local visibleCount = 0
+   for _, child in ipairs(children) do
+    if child:isVisible() then
+      visibleCount = visibleCount + 1
+    end
+   end
+   if visibleCount > 6 and buttonsWindow:getHeight() < 30 then
+    buttonsWindow:setHeight(buttonsWindow:getHeight() + 22)
+   end
+end