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prompt: Add a key release callback. 

A possible use case is to highlight something when a key is
pressed and un-highlight it when the key is released.
This commit is contained in:
Emmanuel Lepage Vallee 2016-09-29 02:46:04 -04:00
parent 11644f4582
commit ef50f75551
1 changed files with 10 additions and 1 deletions
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11
lib/awful/prompt.lua
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@ -248,6 +248,8 @@ end
-- with command as argument when a command was changed. -- with command as argument when a command was changed.
-- @tparam[opt] function args.keypressed_callback The callback function to call -- @tparam[opt] function args.keypressed_callback The callback function to call
-- with mod table, key and command as arguments when a key was pressed. -- with mod table, key and command as arguments when a key was pressed.
-- @tparam[opt] function args.keyreleased_callback The callback function to call
-- with mod table, key and command as arguments when a key was pressed.
-- @tparam[opt] table args.hooks The "hooks" argument uses a syntax similar to -- @tparam[opt] table args.hooks The "hooks" argument uses a syntax similar to
-- `awful.key`. It will call a function for the matching modifiers + key. -- `awful.key`. It will call a function for the matching modifiers + key.
-- It receives the command (widget text/input) as an argument. -- It receives the command (widget text/input) as an argument.
@ -407,11 +409,18 @@ function prompt.run(args, textbox, exe_callback, completion_callback,
grabber = keygrabber.run( grabber = keygrabber.run(
function (modifiers, key, event) function (modifiers, key, event)
if event ~= "press" then return end
-- Convert index array to hash table -- Convert index array to hash table
local mod = {} local mod = {}
for _, v in ipairs(modifiers) do mod[v] = true end for _, v in ipairs(modifiers) do mod[v] = true end
if event ~= "press" then
if args.keyreleased_callback then
args.keyreleased_callback(mod, key, command)
end
return
end
-- Call the user specified callback. If it returns true as -- Call the user specified callback. If it returns true as
-- the first result then return from the function. Treat the -- the first result then return from the function. Treat the
-- second and third results as a new command and new prompt -- second and third results as a new command and new prompt