Add scroll:bind_grid function

druid/base/dynamic_grid.lua

@@ -245,17 +245,21 @@ end
 -- update poses on grid elements. Default: gui.set_position
 -- @function dynamic_grid:set_position_function
 -- @tparam function callback Function on node set position
+-- @treturn druid.dynamic_grid Current grid instance
 function DynamicGrid:set_position_function(callback)
 	self._set_position_function = callback or gui.set_position
+	return self
 end
 
 
 --- Clear grid nodes array. GUI nodes will be not deleted!
 -- If you want to delete GUI nodes, use dynamic_grid.nodes array before grid:clear
 -- @function dynamic_grid:clear
+-- @treturn druid.dynamic_grid Current grid instance
 function DynamicGrid:clear()
 	self.nodes = {}
 	self:_update()
+	return self
 end
 
 

druid/base/scroll.lua

@@ -118,8 +118,11 @@ function Scroll:init(view_node, content_node)
 
 	self.selected = nil
 	self.is_animate = false
+
 	self._is_horizontal_scroll = true
 	self._is_vertical_scroll = true
+	self._grid_on_change = nil
+	self._grid_on_change_callback = nil
 
 	self:_update_size()
 end
@@ -139,6 +142,11 @@ function Scroll:update(dt)
 end
 
 
+function Scroll:on_remove()
+	self:bind_grid(nil)
+end
+
+
 --- Start scroll to target point.
 -- @function scroll:scroll_to
 -- @tparam point vector3 Target point
@@ -318,6 +326,28 @@ function Scroll:set_vertical_scroll(state)
 end
 
 
+
+function Scroll:bind_grid(grid)
+	if self._grid_on_change then
+		self._grid_on_change:unsubscribe(self._grid_on_change_callback)
+
+		self._grid_on_change = nil
+		self._grid_on_change_callback = nil
+	end
+
+	if not grid then
+		return
+	end
+
+	self._grid_on_change = grid.on_change_items
+	self._grid_on_change_callback = self._grid_on_change:subscribe(function()
+		self:set_size(grid:get_size())
+	end)
+
+	return self
+end
+
+
 function Scroll:_on_scroll_drag(dx, dy)
 	local t = self.target_position
 	local b = self.available_pos

druid/base/static_grid.lua

@@ -218,14 +218,18 @@ end
 -- update poses on grid elements. Default: gui.set_position
 -- @function static_grid:set_position_function
 -- @tparam function callback Function on node set position
+-- @treturn druid.static_grid Current grid instance
 function StaticGrid:set_position_function(callback)
 	self._set_position_function = callback or gui.set_position
+
+	return self
 end
 
 
 --- Clear grid nodes array. GUI nodes will be not deleted!
 -- If you want to delete GUI nodes, use static_grid.nodes array before grid:clear
 -- @function static_grid:clear
+-- @treturn druid.static_grid Current grid instance
 function StaticGrid:clear()
 	self.border.x = 0
 	self.border.y = 0
@@ -234,6 +238,8 @@ function StaticGrid:clear()
 
 	self.nodes = {}
 	self:_update()
+
+	return self
 end