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--
-- environment_placement_hook.lua
--
-- Linux-only placement hook which detects the presence of an ION_USE_WS
-- environment variable in the processes of new windows, and uses that to
-- determine where to place them.
--
-- ION_USE_WS should be exported in the same terminal the app is started
-- from, or something like this could be typed at the "Run:" prompt:
--
-- export ION_USE_WS="framename" && firefox
--
-- Or simply use the run_here query provided to "Run (in current frame):"
--
-- Note: there are a lot of apps that this will not work with.
--
defbindings("WMPlex", {
kpress("Shift+F3", "run_here(_)")
})
local pid_prop_atom = ioncore.x_intern_atom("_NET_WM_PID", false)
local function pidof(w)
return ioncore.x_get_window_property(w:xid(), pid_prop_atom, 0, 0, true)[1]
end
local function get_environment_of(pid)
local file = io.open("/proc/"..tostring(pid).."/environ")
local envstr = string.format("%q", file:read("*a"))
file:close()
local rv = {}
for k, v in string.gfind(envstr, "(.-)=(.-)\\000") do
rv[k] = v
end
return rv
end
local function environ_placement_hook(w, t)
if t.tfor then return false end -- ignore transients with this PID
local pid = tostring(pidof(w))
local env = get_environment_of(pid)
local ws = env.ION_USE_WS
if not ws then return false end
ws = ioncore.lookup_region(ws)
if not ws then return false end
ws:attach(w, {switchto=true})
return true
end
hook = ioncore.get_hook("clientwin_do_manage_alt")
if hook then
hook:add(environ_placement_hook)
end
-- TODO: attempt to handle ":" for terminal apps.
local function qhandler(mplex, str)
mod_query.exec_handler(mplex, "export ION_USE_WS="..
string.shell_safe(mplex:name()).." && "..str)
end
function run_here(mplex)
mod_query.query(mplex, "Run (in current frame):",
nil, qhandler,
mod_query.exec_completor, "run")
end
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