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menubar.icon_theme: cache index_theme instances 

Ref: https://github.com/awesomeWM/awesome/pull/523#commitcomment-13716821
This commit is contained in:
Daniel Hahler 2015-10-13 11:11:45 +02:00
parent 7d9b78c13c
commit a648b27af6
1 changed files with 14 additions and 1 deletions
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15
lib/menubar/icon_theme.lua
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@ -91,6 +91,8 @@ end
local icon_theme = { mt = {} }
local index_theme_cache = {}
--- Class constructor of `icon_theme`
-- @tparam string icon_theme_name Internal name of icon theme
-- @tparam table base_directories Paths used for lookup
@ -103,7 +105,18 @@ icon_theme.new = function(icon_theme_name, base_directories)
self.icon_theme_name = icon_theme_name
self.base_directories = base_directories
self.extensions = { "png", "svg", "xpm" }
self.index_theme = index_theme(self.icon_theme_name, self.base_directories)
-- Instantiate index_theme (cached).
if not index_theme_cache[self.icon_theme_name] then
index_theme_cache[self.icon_theme_name] = {}
end
local cache_key = table.concat(self.base_directories, ':')
if not index_theme_cache[self.icon_theme_name][cache_key] then
index_theme_cache[self.icon_theme_name][cache_key] = index_theme(
self.icon_theme_name,
self.base_directories)
end
self.index_theme = index_theme_cache[self.icon_theme_name][cache_key]
return setmetatable(self, { __index = icon_theme })
end