refactor: change directory structure to support mpv 0.32 and lower

scripts/uosc_shared/elements/Elements.lua

@@ -0,0 +1,154 @@
+local Elements = {itable = {}}
+
+---@param element Element
+function Elements:add(element)
+	if not element.id then
+		msg.error('attempt to add element without "id" property')
+		return
+	end
+
+	if self:has(element.id) then Elements:remove(element.id) end
+
+	self.itable[#self.itable + 1] = element
+	self[element.id] = element
+
+	request_render()
+end
+
+function Elements:remove(idOrElement)
+	if not idOrElement then return end
+	local id = type(idOrElement) == 'table' and idOrElement.id or idOrElement
+	local element = Elements[id]
+	if element then
+		if not element.destroyed then element:destroy() end
+		element.enabled = false
+		self.itable = itable_remove(self.itable, self[id])
+		self[id] = nil
+		request_render()
+	end
+end
+
+function Elements:update_proximities()
+	local capture_mbtn_left = false
+	local capture_wheel = false
+	local menu_only = Elements.menu ~= nil
+	local mouse_leave_elements = {}
+	local mouse_enter_elements = {}
+
+	-- Calculates proximities and opacities for defined elements
+	for _, element in self:ipairs() do
+		if element.enabled then
+			local previous_proximity_raw = element.proximity_raw
+
+			-- If menu is open, all other elements have to be disabled
+			if menu_only then
+				if element.ignores_menu then
+					capture_mbtn_left = true
+					capture_wheel = true
+					element:update_proximity()
+				else
+					element.proximity_raw = infinity
+					element.proximity = 0
+				end
+			else
+				element:update_proximity()
+			end
+
+			-- Element has global forced key listeners
+			if element.on_global_mbtn_left_down then capture_mbtn_left = true end
+			if element.on_global_wheel_up or element.on_global_wheel_down then capture_wheel = true end
+
+			if element.proximity_raw == 0 then
+				-- Element has local forced key listeners
+				if element.on_mbtn_left_down then capture_mbtn_left = true end
+				if element.on_wheel_up or element.on_wheel_up then capture_wheel = true end
+
+				-- Mouse entered element area
+				if previous_proximity_raw ~= 0 then
+					mouse_enter_elements[#mouse_enter_elements + 1] = element
+				end
+			else
+				-- Mouse left element area
+				if previous_proximity_raw == 0 then
+					mouse_leave_elements[#mouse_leave_elements + 1] = element
+				end
+			end
+		end
+	end
+
+	-- Enable key group captures requested by elements
+	mp[capture_mbtn_left and 'enable_key_bindings' or 'disable_key_bindings']('mbtn_left')
+	mp[capture_wheel and 'enable_key_bindings' or 'disable_key_bindings']('wheel')
+
+	-- Trigger `mouse_leave` and `mouse_enter` events
+	for _, element in ipairs(mouse_leave_elements) do element:trigger('mouse_leave') end
+	for _, element in ipairs(mouse_enter_elements) do element:trigger('mouse_enter') end
+end
+
+-- Toggles passed elements' min visibilities between 0 and 1.
+---@param ids string[] IDs of elements to peek.
+function Elements:toggle(ids)
+	local has_invisible = itable_find(ids, function(id) return Elements[id] and Elements[id].min_visibility ~= 1 end)
+	self:set_min_visibility(has_invisible and 1 or 0, ids)
+end
+
+-- Set (animate) elements' min visibilities to passed value.
+---@param visibility number 0-1 floating point.
+---@param ids string[] IDs of elements to peek.
+function Elements:set_min_visibility(visibility, ids)
+	for _, id in ipairs(ids) do
+		local element = Elements[id]
+		if element then element:tween_property('min_visibility', element.min_visibility, visibility) end
+	end
+end
+
+-- Flash passed elements.
+---@param ids string[] IDs of elements to peek.
+function Elements:flash(ids)
+	local elements = itable_filter(self.itable, function(element) return itable_index_of(ids, element.id) ~= nil end)
+	for _, element in ipairs(elements) do element:flash() end
+end
+
+---@param name string Event name.
+function Elements:trigger(name, ...)
+	for _, element in self:ipairs() do element:trigger(name, ...) end
+end
+
+-- Trigger two events, `name` and `global_name`, depending on element-cursor proximity.
+-- Disabled elements don't receive these events.
+---@param name string Event name.
+function Elements:proximity_trigger(name, ...)
+	for _, element in self:ipairs() do
+		if element.enabled then
+			if element.proximity_raw == 0 then element:trigger(name, ...) end
+			element:trigger('global_' .. name, ...)
+		end
+	end
+end
+
+function Elements:has(id) return self[id] ~= nil end
+function Elements:ipairs() return ipairs(self.itable) end
+
+---@param name string Event name.
+function Elements:create_proximity_dispatcher(name)
+	return function(...) self:proximity_trigger(name, ...) end
+end
+
+mp.set_key_bindings({
+	{
+		'mbtn_left',
+		Elements:create_proximity_dispatcher('mbtn_left_up'),
+		function(...)
+			update_mouse_pos(nil, mp.get_property_native('mouse-pos'), true)
+			Elements:proximity_trigger('mbtn_left_down', ...)
+		end,
+	},
+	{'mbtn_left_dbl', 'ignore'},
+}, 'mbtn_left', 'force')
+
+mp.set_key_bindings({
+	{'wheel_up', Elements:create_proximity_dispatcher('wheel_up')},
+	{'wheel_down', Elements:create_proximity_dispatcher('wheel_down')},
+}, 'wheel', 'force')
+
+return Elements