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tag.viewmore: Add an optional limit to the number of selection.

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This commit is contained in:
Emmanuel Lepage Vallee 2018-10-01 16:08:33 -04:00
parent da68b3cbaf
commit 9e45e016e9
1 changed files with 22 additions and 2 deletions
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24
lib/awful/tag.lua
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@ -1281,19 +1281,39 @@ function tag.viewonly(t)
end
--- View only a set of tags.
--
-- If `maximum` is set, there will be a limit on the number of new tag being
-- selected. The tags already selected do not count. To do nothing if one or
-- more of the tags are already selected, set `maximum` to zero.
--
-- @function awful.tag.viewmore
-- @param tags A table with tags to view only.
-- @param[opt] screen The screen of the tags.
function tag.viewmore(tags, screen)
-- @tparam[opt=#tags] number maximum The maximum number of tags to select.
function tag.viewmore(tags, screen, maximum)
maximum = maximum or #tags
local selected = 0
screen = get_screen(screen or ascreen.focused())
local screen_tags = screen.tags
for _, _tag in ipairs(screen_tags) do
if not gtable.hasitem(tags, _tag) then
_tag.selected = false
elseif _tag.selected then
selected = selected + 1
end
end
for _, _tag in ipairs(tags) do
_tag.selected = true
if selected == 0 and maximum == 0 then
_tag.selected = true
break
end
if selected >= maximum then break end
if not _tag.selected then
selected = selected + 1
_tag.selected = true
end
end
screen:emit_signal("tag::history::update")
end