267 lines
7.6 KiB
Lua
267 lines
7.6 KiB
Lua
--- Launch clients with single instance IDs using wm-launch.
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--
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-- @author James Reed <jcrd@tuta.io>
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-- @copyright 2019 James Reed
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-- @module awesome-launch
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local awful = require("awful")
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local gears = require("gears")
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local wibox = require("wibox")
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local beautiful = require("beautiful")
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local uuid = require("uuid")
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local shared = require("awesome-launch.shared")
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uuid.seed()
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local launch = {}
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launch.widget = require("awesome-launch.widget")
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awesome.register_xproperty("WM_LAUNCH_ID", "string")
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awful.rules.add_rule_source("launch",
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function (c, props, callbacks)
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local id = c:get_xproperty("WM_LAUNCH_ID")
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if not id or id == "" then return end
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local data = shared.pending[id]
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if not data then return end
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data.timer:stop()
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gears.table.crush(props, data.props)
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if data.spawn_callback then
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table.insert(callbacks, data.spawn_callback)
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end
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shared.pending[id] = nil
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launch.widget.update_widgets()
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end)
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awful.client.property.persist("cmdline", "string")
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launch.client = {}
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local function get_ids()
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local ids = {}
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for _, c in ipairs(client.get()) do
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if c.single_instance_id then ids[c.single_instance_id] = c end
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end
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return ids
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end
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--- Get a launched client by its ID.
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--
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-- @param id The ID.
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-- @param filter Function to filter clients that are considered.
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-- @return The client.
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-- @function client.by_id
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function launch.client.by_id(id, filter)
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for _, c in ipairs(client.get()) do
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if (not filter or filter(c)) and c.single_instance_id == id then
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return c
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end
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end
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end
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--- Get a launched client by its command line.
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--
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-- @param cmd The command line.
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-- @param filter Function to filter clients that are considered.
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-- @return The client.
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-- @function client.by_cmdline
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function launch.client.by_cmdline(cmd, filter)
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for _, c in ipairs(client.get()) do
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if (not filter or filter(c)) and c.cmdline == cmd then
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return c
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end
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end
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end
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--- Spawn a client with wm-launch.
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--
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-- @param cmd The command.
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-- @param args Table containing the single instance ID and additional arguments
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-- @param args.id Single instance ID.
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-- @param args.props Properties to apply to the client.
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-- @param args.pwd Pathname to the working directory for new clients.
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-- @param args.timeout Seconds after which to stop waiting for a client to spawn.
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-- @param args.spawn_callback Function to call with client when it spawns.
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-- @param args.factory The factory to use (see wm-launch's -f flag).
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-- @param args.firejail If true, run cmd with firejail.
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-- @return The client's ID.
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-- @function launch.spawn
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local function spawn(cmd, args)
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args = args or {}
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local id = args.id or uuid()
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local data = {
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props = args.props or {},
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pwd = args.pwd,
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spawn_callback = args.spawn_callback,
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timeout = math.ceil(args.timeout or 10),
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}
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gears.table.crush(data.props, {
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single_instance_id = id,
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cmdline = cmd,
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})
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local step = 1/2
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data.timer = gears.timer {
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timeout = step,
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callback = function ()
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data.timeout = data.timeout - step
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if data.timeout == 0 then
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shared.pending[id] = nil
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launch.widget.update_widgets()
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return false
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else
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data.widget.id_const.id_margin.id_progress.value = data.timeout
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end
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return true
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end,
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}
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if launch.widget.active() then
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data.widget = launch.widget.new(cmd, data)
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end
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local launch_cmd = "wm-launch"
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if args.factory then
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launch_cmd = launch_cmd .. " -f " .. args.factory
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end
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if args.firejail then
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launch_cmd = launch_cmd .. " -j"
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end
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launch_cmd = string.format("%s %s %s", launch_cmd, id, cmd)
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if data.pwd then
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awful.spawn.with_shell(string.format("cd %s; %s", data.pwd, launch_cmd))
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else
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awful.spawn(launch_cmd)
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end
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shared.pending[id] = data
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launch.widget.update_widgets()
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data.timer:start()
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return id
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end
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launch.spawn = {}
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setmetatable(launch.spawn, {__call = function (_, ...) spawn(...) end})
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--- Spawn a command if an instance is not already running.
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--
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-- @param cmd The command.
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-- @param args Table containing the single instance ID and additional arguments for spawn
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-- @param args.id Single instance ID.
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-- @param args.props Properties to apply to the client.
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-- @param args.pwd Pathname to the working directory for new clients.
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-- @param args.timeout Seconds after which to stop waiting for a client to spawn.
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-- @param args.spawn_callback Function to call with client when it spawns.
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-- @param args.factory The factory to use (see wm-launch's -f flag).
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-- @param args.firejail If true, run cmd with firejail.
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-- @param args.filter Function to filter clients that are considered.
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-- @return The client's ID.
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-- @function spawn.single_instance
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function launch.spawn.single_instance(cmd, args)
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local c
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if args.id then
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c = launch.client.by_id(args.id, args.filter)
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else
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c = launch.client.by_cmdline(cmd, args.filter)
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end
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if not c then return spawn(cmd, args) end
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return args.id
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end
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--- Raise a client if it exists or spawn a new one then raise it.
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--
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-- @param cmd The command.
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-- @param args Table containing the single instance ID and additional arguments for spawn
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-- @param args.id Single instance ID.
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-- @param args.props Properties to apply to the client.
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-- @param args.pwd Pathname to the working directory for new clients.
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-- @param args.timeout Seconds after which to stop waiting for a client to spawn.
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-- @param args.spawn_callback Function to call with client when it spawns.
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-- @param args.callback Function to call with client when it spawns or is raised.
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-- @param args.factory The factory to use (see wm-launch's -f flag).
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-- @param args.firejail If true, run cmd with firejail.
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-- @param args.filter Function to filter clients that are considered.
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-- @return The client's ID.
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-- @function spawn.raise_or_spawn
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function launch.spawn.raise_or_spawn(cmd, args)
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local c
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if args.id then
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c = launch.client.by_id(args.id, args.filter)
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else
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c = launch.client.by_cmdline(cmd, args.filter)
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end
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if c then
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c:emit_signal("request::activate", "launch.spawn.raise_or_spawn",
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{raise=true})
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if args.callback then
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args.callback(c)
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end
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return args.id
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end
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if args.callback then
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local cb = args.spawn_callback
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args.spawn_callback = function (c)
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if cb then cb(c) end
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args.callback(c)
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end
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end
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return spawn(cmd, args)
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end
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--- Spawn clients on a tag.
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--
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-- Usage: `launch.spawn.here().spawn("xterm")`
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--
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-- @param tag_func Optional function that returns the tag, defaults to
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-- `awful.screen.focused().selected_tag`.
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-- @return A table with the functions: spawn, single_instance, raise_or_spawn.
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-- @function spawn.here
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function launch.spawn.here(tag_func)
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local here = {}
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local function with_tag(func, cmd, args)
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local tag
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if tag_func then
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tag = tag_func()
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else
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tag = awful.screen.focused().selected_tag
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end
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local a = {
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filter = function (c) return c:isvisible() end,
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props = {tag = tag},
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}
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gears.table.crush(a, args or {})
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func(cmd, a)
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end
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function here.spawn(...)
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with_tag(launch.spawn, ...)
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end
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function here.single_instance(...)
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with_tag(launch.spawn.single_instance, ...)
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end
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function here.raise_or_spawn(...)
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with_tag(launch.spawn.raise_or_spawn, ...)
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end
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return here
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end
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return launch
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