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{tag,task}list: Use a weak-valued table 

The data table is used to map objects (clients/tags) to the buttons associated
with them. This is done so that we don't have to re-create the button objects
each time this lists are updated.

The problem was that this weak-keyed table was never cleared, because the value
had a strong reference to the key (via the button's signal):

btn:connect_signal("press", function () b:emit_signal("press", o) end)

"o" is the key in the table and btn is reachable from the value. This prevented
the garbage collection of the key. Using a weak-keyed and weak-valued table
fixes this.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2010-09-16 17:28:50 +02:00
parent 3aee846869
commit 89f05c90ca
2 changed files with 2 additions and 2 deletions
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2
lib/awful/widget/taglist.lua.in
View File

@ -158,7 +158,7 @@ function new(screen, filter, buttons, style, template)
layout = layout.horizontal.leftright
}
local data = setmetatable({}, { __mode = 'k' })
local data = setmetatable({}, { __mode = 'vk' })
local u = function (s)
if s == screen then
taglist_update(s, w, buttons, filter, data, style, template)

2
lib/awful/widget/tasklist.lua.in
View File

@ -133,7 +133,7 @@ function new(screen, filter, buttons, style, template)
layout = layout.horizontal.leftright
}
local data = setmetatable({}, { __mode = 'k' })
local data = setmetatable({}, { __mode = 'kv' })
local u = function () tasklist_update(screen, w, buttons, filter, data, style, template) end
capi.screen[screen]:connect_signal("tag::detach", u)
tag.attached_connect_signal(screen, "property::selected", u)