718 lines
24 KiB
Lua
718 lines
24 KiB
Lua
---------------------------------------------------------------------------
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--- Rules for clients.
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--
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-- This module applies @{rules} to clients during startup (via @{client.manage},
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-- but its functions can be used for client matching in general.
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--
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-- All existing `client` properties can be used in rules. It is also possible
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-- to add random properties that will be later accessible as `c.property_name`
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-- (where `c` is a valid client object)
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--
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-- Syntax
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-- ===
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-- You should fill this table with your rule and properties to apply.
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-- For example, if you want to set xterm maximized at startup, you can add:
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--
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-- @DOC_sequences_client_rules_maximized_EXAMPLE@
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--
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-- If you want to set mplayer floating at startup, you can add:
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--
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-- @DOC_sequences_client_rules_floating_EXAMPLE@
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--
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-- If you want to put Firefox on a specific tag at startup. It is possible to
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-- specify the tag with it's object or by name:
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--
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-- @DOC_sequences_client_rules_tags_EXAMPLE@
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--
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-- If you want to put Thunderbird on a specific screen at startup, use:
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--
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-- @DOC_sequences_client_rules_screens_EXAMPLE@
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--
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-- If you want to put Emacs on a specific tag at startup, and immediately switch
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-- to that tag you can add:
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--
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-- @DOC_sequences_client_rules_switch_to_tags_EXAMPLE@
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--
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-- If you want to apply a custom callback to execute when a rule matched,
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-- for example to pause playing music from mpd when you start dosbox, you
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-- can add:
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--
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-- { rule = { class = "dosbox" },
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-- callback = function(c)
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-- awful.spawn('mpc pause')
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-- end }
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--
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-- Note that all "rule" entries need to match. If any of the entry does not
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-- match, the rule won't be applied.
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--
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-- If a client matches multiple rules, they are applied in the order they are
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-- put in this global rules table. If the value of a rule is a string, then the
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-- match function is used to determine if the client matches the rule.
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--
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-- If the value of a property is a function, that function gets called and
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-- function's return value is used for the property.
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--
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-- To match multiple clients to a rule one need to use slightly different
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-- syntax:
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--
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-- { rule_any = { class = { "MPlayer", "Nitrogen" }, instance = { "xterm" } },
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-- properties = { floating = true } }
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--
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-- To match multiple clients with an exception one can couple `rules.except` or
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-- `rules.except_any` with the rules:
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--
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-- { rule = { class = "Firefox" },
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-- except = { instance = "Navigator" },
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-- properties = {floating = true},
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-- },
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--
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-- { rule_any = { class = { "Pidgin", "Xchat" } },
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-- except_any = { role = { "conversation" } },
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-- properties = { tag = "1" }
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-- }
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--
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-- { rule = {},
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-- except_any = { class = { "Firefox", "Vim" } },
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-- properties = { floating = true }
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-- }
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--
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-- Note that all rules can have an `id` field. This can then be used to find
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-- the rule. For example, it can be used in `remove_rule` instead of the table.
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--
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-- Flowchart
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-- =========
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--
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-- 
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--
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-- Applicable client properties
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-- ===
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--
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-- The table below holds the list of default client properties along with
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-- some extra properties that are specific to the rules. Note that any property
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-- can be set in the rules and interpreted by user provided code. This table
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-- only represent those offered by default.
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--
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--@DOC_client_rules_index_COMMON@
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--
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-- @author Julien Danjou <julien@danjou.info>
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-- @copyright 2009 Julien Danjou
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-- @ruleslib ruled.client
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---------------------------------------------------------------------------
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-- Grab environment we need
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local capi = {client = client, awesome = awesome, screen = screen, tag = tag}
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local table = table
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local type = type
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local ipairs = ipairs
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local pairs = pairs
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local atag = require("awful.tag")
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local gobject = require("gears.object")
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local gtable = require("gears.table")
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local a_place = require("awful.placement")
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local protected_call = require("gears.protected_call")
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local aspawn = require("awful.spawn")
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local gdebug = require("gears.debug")
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local gmatcher = require("gears.matcher")
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local amouse = require("awful.mouse")
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local akeyboard = require("awful.keyboard")
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local unpack = unpack or table.unpack -- luacheck: globals unpack (compatibility with Lua 5.1)
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local module = {}
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local crules = gmatcher()
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--- Check if a client matches a rule.
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-- @tparam client c The client.
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-- @tparam table rule The rule to check.
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-- @treturn bool True if it matches, false otherwise.
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-- @staticfct ruled.client.match
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function module.match(c, rule)
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return crules:_match(c, rule)
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end
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--- Check if a client matches any part of a rule.
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-- @tparam client c The client.
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-- @tparam table rule The rule to check.
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-- @treturn bool True if at least one rule is matched, false otherwise.
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-- @staticfct ruled.client.match_any
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function module.match_any(c, rule)
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return crules:_match_any(c, rule)
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end
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--- Does a given rule entry match a client?
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-- @tparam client c The client.
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-- @tparam table entry Rule entry (with keys `rule`, `rule_any`, `except` and/or
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-- `except_any`).
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-- @treturn bool
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-- @staticfct ruled.client.matches
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function module.matches(c, entry)
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return crules:matches_rule(c, entry)
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end
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--- Get list of matching rules for a client.
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-- @tparam client c The client.
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-- @tparam table _rules The rules to check. List with "rule", "rule_any", "except" and
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-- "except_any" keys.
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-- @treturn table The list of matched rules.
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-- @staticfct ruled.client.matching_rules
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function module.matching_rules(c, _rules)
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return crules:matching_rules(c, _rules)
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end
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--- Check if a client matches a given set of rules.
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-- @tparam client c The client.
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-- @tparam table _rules The rules to check. List of tables with `rule`, `rule_any`,
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-- `except` and `except_any` keys.
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-- @treturn bool True if at least one rule is matched, false otherwise.
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-- @staticfct ruled.client.matches_list
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function module.matches_list(c, _rules)
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return crules:matches_rules(c, _rules)
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end
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--- Remove a source.
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-- @tparam string name The source name.
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-- @treturn boolean If the source was removed.
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-- @staticfct ruled.client.remove_rule_source
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function module.remove_rule_source(name)
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return crules:remove_matching_source(name)
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end
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--- Apply ruled.client.rules to a client.
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-- @tparam client c The client.
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-- @staticfct ruled.client.apply
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function module.apply(c)
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return crules:apply(c)
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end
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--- Add a new rule to the default set.
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--
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-- @tparam table rule A valid rule.
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function module.append_rule(rule)
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crules:append_rule("awful.rules", rule)
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end
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--- Add a new rules to the default set.
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-- @tparam table rules A table with rules.
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function module.append_rules(rules)
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crules:append_rules("awful.rules", rules)
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end
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--- Remove a new rule to the default set.
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-- @tparam table|string rule A valid rule or a name passed in the `id` value
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-- when calling `append_rule`.
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function module.remove_rule(rule)
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crules:remove_rule("awful.rules", rule)
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end
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--- Add a new rule source.
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--
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-- A rule source is a provider called when a client is managed (started). It
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-- allows to configure the client by providing properties that should be applied.
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-- By default, Awesome provides 2 sources:
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--
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-- * `awful.rules`: A declarative matcher
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-- * `awful.spawn`: Launch clients with pre-defined properties
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--
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-- It is possible to register new callbacks to modify the properties table
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-- before it is applied. Each provider is executed sequentially and modifies the
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-- same table. If the first provider set a property, then the second can
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-- override it, then the third, etc. Once the providers are exhausted, the
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-- properties are applied on the client.
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--
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-- It is important to note that properties themselves have their own
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-- dependencies. For example, a `tag` property implies a `screen`. Therefor, if
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-- a `screen` is already specified, then it will be ignored when the rule is
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-- executed. Properties also have their own priorities. For example, the
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-- `titlebar` and `border_width` need to be applied before the `x` and `y`
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-- positions are set. Otherwise, it will be off or the client will shift
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-- upward everytime Awesome is restarted. A rule source *cannot* change this.
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-- It is up to the callback to be aware of the dependencies and avoid to
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-- introduce issues. For example, if the source wants to set a `screen`, it has
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-- to check if the `tag`, `tags` or `new_tag` are on that `screen` or remove
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-- those properties. Otherwise, they will be ignored once the rule is applied.
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--
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-- @tparam string name The provider name. It must be unique.
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-- @tparam function callback The callback that is called to produce properties.
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-- @tparam client callback.c The client
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-- @tparam table callback.properties The current properties. The callback should
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-- add to and overwrite properties in this table
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-- @tparam table callback.callbacks A table of all callbacks scheduled to be
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-- executed after the main properties are applied.
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-- @tparam[opt={}] table depends_on A list of names of sources this source depends on
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-- (sources that must be executed *before* `name`.
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-- @tparam[opt={}] table precede A list of names of sources this source have a
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-- priority over.
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-- @treturn boolean Returns false if a dependency conflict was found.
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-- @staticfct ruled.client.add_rule_source
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function module.add_rule_source(name, cb, ...)
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local function callback(_, ...)
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cb(...)
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end
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return crules:add_matching_function(name, callback, ...)
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end
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--- The default `ruled.client` source.
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--
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-- It is called `awful.rules` for historical reasons.
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--
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-- **Has priority over:**
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--
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-- *nothing*
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--
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-- @rulesources awful.rules
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crules:add_matching_rules("awful.rules", {}, {"awful.spawn"}, {})
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-- Add startup_id overridden properties
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local function apply_spawn_rules(c, props, callbacks)
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if c.startup_id and aspawn.snid_buffer[c.startup_id] then
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local snprops, sncb = unpack(aspawn.snid_buffer[c.startup_id])
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-- The SNID tag(s) always have precedence over the rules one(s)
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if snprops.tag or snprops.tags or snprops.new_tag then
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props.tag, props.tags, props.new_tag = nil, nil, nil
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end
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gtable.crush(props, snprops)
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gtable.merge(callbacks, sncb)
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end
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end
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--- The rule source for clients spawned by `awful.spawn`.
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--
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-- **Has priority over:**
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--
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-- * `awful.rules`
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--
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-- @rulesources awful.spawn
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module.add_rule_source("awful.spawn", apply_spawn_rules, {}, {"awful.rules"})
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local function apply_singleton_rules(c, props, callbacks)
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local persis_id, info = c.single_instance_id, nil
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-- This is a persistent property set by `awful.spawn`
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if capi.awesome.startup and persis_id then
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info = aspawn.single_instance_manager.by_uid[persis_id]
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elseif c.startup_id then
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info = aspawn.single_instance_manager.by_snid[c.startup_id]
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aspawn.single_instance_manager.by_snid[c.startup_id] = nil
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elseif aspawn.single_instance_manager.by_pid[c.pid] then
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info = aspawn.single_instance_manager.by_pid[c.pid].matcher(c) and
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aspawn.single_instance_manager.by_pid[c.pid] or nil
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end
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if info then
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c.single_instance_id = info.hash
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if info.rules then
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gtable.crush(props, info.rules)
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end
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table.insert(callbacks, info.callback)
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table.insert(info.instances, c)
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-- Prevent apps with multiple clients from re-using this too often in
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-- the first 30 seconds before the PID is cleared.
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aspawn.single_instance_manager.by_pid[c.pid] = nil
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end
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end
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--- The rule source for clients spawned by `awful.spawn.once` and `single_instance`.
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--
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-- **Has priority over:**
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--
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-- * `awful.rules`
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--
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-- **Depends on:**
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--
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-- * `awful.spawn`
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--
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-- @rulesources awful.spawn_once
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module.add_rule_source("awful.spawn_once", apply_singleton_rules, {"awful.spawn"}, {"awful.rules"})
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local function add_to_tag(c, t)
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if not t then return end
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local tags = c:tags()
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table.insert(tags, t)
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c:tags(tags)
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end
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--- Extra rules properties.
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--
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-- These properties are used in the rules only and are not sent to the client
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-- afterward.
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--
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-- To add a new properties, just do:
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--
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-- function ruled.client.extra_properties.my_new_property(c, value, props)
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-- -- do something
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-- end
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--
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-- By default, the table has the following functions:
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--
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-- * geometry
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-- * placement
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--
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-- @tfield table ruled.client.extra_properties
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module.extra_properties = {}
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--- Extra high priority properties.
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--
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-- Some properties, such as anything related to tags, geometry or focus, will
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-- cause a race condition if set in the main property section. This is why
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-- they have a section for them.
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--
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-- To add a new properties, just do:
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--
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-- function ruled.client.high_priority_properties.my_new_property(c, value, props)
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-- -- do something
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-- end
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--
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-- By default, the table has the following functions:
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--
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-- * tag
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-- * new_tag
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--
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-- @tfield table ruled.client.high_priority_properties
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module.high_priority_properties = {}
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--- Delayed properties.
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-- Properties applied after all other categories.
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-- @tfield table ruled.client.delayed_properties
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-- By default, the table has the following functions:
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--
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-- * switch_to_tags
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module.delayed_properties = {}
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local force_ignore = {
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titlebars_enabled=true, focus=true, screen=true, x=true,
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y=true, width=true, height=true, geometry=true,placement=true,
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border_width=true,floating=true,size_hints_honor=true
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}
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function module.high_priority_properties.tag(c, value, props)
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if value then
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if type(value) == "string" then
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local name = value
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value = atag.find_by_name(c.screen, value)
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if not value and not props.screen then
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value = atag.find_by_name(nil, name)
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end
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if not value then
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gdebug.print_error("ruled.client-rule specified "
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.. "tag = '" .. name .. "', but no such tag exists")
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return
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end
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end
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-- In case the tag has been forced to another screen, move the client
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if c.screen ~= value.screen then
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c.screen = value.screen
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props.screen = value.screen -- In case another rule query it
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end
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c:tags{ value }
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end
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end
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function module.delayed_properties.switch_to_tags(c, value)
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if not value then return end
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atag.viewmore(c:tags(), c.screen)
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end
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function module.delayed_properties.switchtotag(c, value)
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gdebug.deprecate("Use switch_to_tags instead of switchtotag", {deprecated_in=5})
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module.delayed_properties.switch_to_tags(c, value)
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end
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function module.extra_properties.geometry(c, _, props)
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local cur_geo = c:geometry()
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local new_geo = type(props.geometry) == "function"
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and props.geometry(c, props) or props.geometry or {}
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for _, v in ipairs {"x", "y", "width", "height"} do
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new_geo[v] = type(props[v]) == "function" and props[v](c, props)
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or props[v] or new_geo[v] or cur_geo[v]
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end
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c:geometry(new_geo) --TODO use request::geometry
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end
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function module.high_priority_properties.new_tag(c, value, props)
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local ty = type(value)
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local t = nil
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if ty == "boolean" then
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-- Create a new tag named after the client class
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t = atag.add(c.class or "N/A", {screen=c.screen, volatile=true})
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elseif ty == "string" then
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-- Create a tag named after "value"
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t = atag.add(value, {screen=c.screen, volatile=true})
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elseif ty == "table" then
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-- Assume a table of tags properties. Set the right screen, but
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-- avoid editing the original table
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local values = value.screen and value or gtable.clone(value)
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values.screen = values.screen or c.screen
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t = atag.add(value.name or c.class or "N/A", values)
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-- In case the tag has been forced to another screen, move the client
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c.screen = t.screen
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props.screen = t.screen -- In case another rule query it
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else
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assert(false)
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end
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add_to_tag(c, t)
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return t
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end
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function module.extra_properties.placement(c, value, props)
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-- Avoid problems
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if capi.awesome.startup and
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(c.size_hints.user_position or c.size_hints.program_position) then
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return
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end
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local ty = type(value)
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local args = {
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honor_workarea = props.honor_workarea ~= false,
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honor_padding = props.honor_padding ~= false
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}
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if ty == "function" or (ty == "table" and
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getmetatable(value) and getmetatable(value).__call
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) then
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value(c, args)
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elseif ty == "string" and a_place[value] then
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a_place[value](c, args)
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end
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end
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function module.high_priority_properties.tags(c, value, props)
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local current = c:tags()
|
|
|
|
local tags, s = {}, nil
|
|
|
|
for _, t in ipairs(value) do
|
|
if type(t) == "string" then
|
|
t = atag.find_by_name(c.screen, t)
|
|
end
|
|
|
|
if t and ((not s) or t.screen == s) then
|
|
table.insert(tags, t)
|
|
s = s or t.screen
|
|
end
|
|
end
|
|
|
|
if s and s ~= c.screen then
|
|
c.screen = s
|
|
props.screen = s -- In case another rule query it
|
|
end
|
|
|
|
if #current == 0 or (value[1] and value[1].screen ~= current[1].screen) then
|
|
c:tags(tags)
|
|
else
|
|
c:tags(gtable.merge(current, tags))
|
|
end
|
|
end
|
|
|
|
--- Apply properties and callbacks to a client.
|
|
-- @tparam client c The client.
|
|
-- @tparam table props Properties to apply.
|
|
-- @tparam[opt] table callbacks Callbacks to apply.
|
|
-- @staticfct ruled.client.execute
|
|
-- @request client titlebars rules granted The `titlebars_enabled` is set in the
|
|
-- rules.
|
|
|
|
crules._execute = function(_, c, props, callbacks)
|
|
|
|
-- Set the default buttons and keys
|
|
local btns = amouse._get_client_mousebindings()
|
|
local keys = akeyboard._get_client_keybindings()
|
|
props.keys = props.keys or keys
|
|
props.buttons = props.buttons or btns
|
|
|
|
-- Border width will also cause geometry related properties to fail
|
|
if props.border_width then
|
|
c.border_width = type(props.border_width) == "function" and
|
|
props.border_width(c, props) or props.border_width
|
|
end
|
|
|
|
-- This has to be done first, as it will impact geometry related props.
|
|
if props.titlebars_enabled and (type(props.titlebars_enabled) ~= "function"
|
|
or props.titlebars_enabled(c,props)) then
|
|
c:emit_signal("request::titlebars", "rules", {properties=props})
|
|
c._request_titlebars_called = true
|
|
end
|
|
|
|
-- Size hints will be re-applied when setting width/height unless it is
|
|
-- disabled first
|
|
if props.size_hints_honor ~= nil then
|
|
c.size_hints_honor = type(props.size_hints_honor) == "function" and props.size_hints_honor(c,props)
|
|
or props.size_hints_honor
|
|
end
|
|
|
|
-- Geometry will only work if floating is true, otherwise the "saved"
|
|
-- geometry will be restored.
|
|
if props.floating ~= nil then
|
|
c.floating = type(props.floating) == "function" and props.floating(c,props)
|
|
or props.floating
|
|
end
|
|
|
|
-- Before requesting a tag, make sure the screen is right
|
|
if props.screen then
|
|
c.screen = type(props.screen) == "function" and capi.screen[props.screen(c,props)]
|
|
or capi.screen[props.screen]
|
|
end
|
|
|
|
-- Some properties need to be handled first. For example, many properties
|
|
-- require that the client is tagged, this isn't yet the case.
|
|
for prop, handler in pairs(module.high_priority_properties) do
|
|
local value = props[prop]
|
|
if value ~= nil then
|
|
if type(value) == "function" then
|
|
value = value(c, props)
|
|
end
|
|
handler(c, value, props)
|
|
end
|
|
end
|
|
|
|
-- Make sure the tag is selected before the main rules are called.
|
|
-- Otherwise properties like "urgent" or "focus" may fail (if they were
|
|
-- overridden by other callbacks).
|
|
-- Previously this was done in a second client.manage callback, but caused
|
|
-- a race condition where the order of modules being loaded would change
|
|
-- the outcome.
|
|
c:emit_signal("request::tag", nil, {reason="rules", screen = c.screen})
|
|
|
|
-- By default, rc.lua uses no_overlap+no_offscreen placement. This has to
|
|
-- be executed before x/y/width/height/geometry as it would otherwise
|
|
-- always override the user specified position with the default rule.
|
|
if props.placement then
|
|
-- It may be a function, so this one doesn't execute it like others
|
|
module.extra_properties.placement(c, props.placement, props)
|
|
end
|
|
|
|
-- Handle the geometry (since tags and screen are set).
|
|
if props.height or props.width or props.x or props.y or props.geometry then
|
|
module.extra_properties.geometry(c, nil, props)
|
|
end
|
|
|
|
-- Apply the remaining properties (after known race conditions are handled).
|
|
for property, value in pairs(props) do
|
|
if property ~= "focus" and property ~= "shape" and type(value) == "function" then
|
|
value = value(c, props)
|
|
end
|
|
|
|
local ignore = module.high_priority_properties[property] or
|
|
module.delayed_properties[property] or force_ignore[property]
|
|
|
|
if not ignore then
|
|
if module.extra_properties[property] then
|
|
module.extra_properties[property](c, value, props)
|
|
elseif type(c[property]) == "function" then
|
|
c[property](c, value)
|
|
else
|
|
c[property] = value
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Apply all callbacks.
|
|
if callbacks then
|
|
for _, callback in pairs(callbacks) do
|
|
protected_call(callback, c)
|
|
end
|
|
end
|
|
|
|
-- Apply the delayed properties
|
|
for prop, handler in pairs(module.delayed_properties) do
|
|
if not force_ignore[prop] then
|
|
local value = props[prop]
|
|
if value ~= nil then
|
|
if type(value) == "function" then
|
|
value = value(c, props)
|
|
end
|
|
handler(c, value, props)
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Do this at last so we do not erase things done by the focus signal.
|
|
if props.focus and (type(props.focus) ~= "function" or props.focus(c)) then
|
|
c:emit_signal('request::activate', "rules", {raise=not capi.awesome.startup})
|
|
end
|
|
end
|
|
|
|
function module.execute(...) crules:_execute(...) end
|
|
|
|
-- TODO v5 deprecate this
|
|
function module.completed_with_payload_callback(c, props, callbacks)
|
|
module.execute(c, props, callbacks)
|
|
end
|
|
|
|
gobject._setup_class_signals(module)
|
|
|
|
capi.client.connect_signal("request::manage", module.apply)
|
|
|
|
-- Request rules to be added **after** all modules are loaded, but before the
|
|
-- clients are managed. This allows module to listen to rules being added and
|
|
-- either modify them or add their own in the right order.
|
|
local function request_rules()
|
|
module.emit_signal("request::rules")
|
|
end
|
|
|
|
capi.client.connect_signal("scanning", request_rules)
|
|
|
|
--@DOC_rule_COMMON@
|
|
|
|
return setmetatable(module, {
|
|
__newindex = function(_, k, v)
|
|
if k == "rules" then
|
|
gdebug.deprecate(
|
|
"Use ruled.client.append_rules instead of setting awful.rules.rules directly",
|
|
{deprecated_in=5}
|
|
)
|
|
|
|
-- Clearing the rule was supported, so it still has to be. This is
|
|
-- a bad idea. There is no plan to make this API public.
|
|
if not next(v) then
|
|
-- It isn't possible to just set it to {}, there is other
|
|
-- references to the table.
|
|
for k2 in pairs(crules._matching_rules["awful.rules"]) do
|
|
crules._matching_rules["awful.rules"][k2] = nil
|
|
end
|
|
else
|
|
crules:append_rules("awful.rules", v)
|
|
end
|
|
else
|
|
rawset(module, k, v)
|
|
end
|
|
end,
|
|
__index = function(_, k)
|
|
if k == "rules" then
|
|
gdebug.deprecate(
|
|
"Accessing `ruled.rules` isn't recommended, to modify rules, "..
|
|
"use `ruled.client.remove_rule()` and add a new one.",
|
|
{deprecated_in=5}
|
|
)
|
|
|
|
if not crules._matching_rules["awful.rules"] then
|
|
crules:add_matching_rules("awful.rules", {}, {}, {})
|
|
end
|
|
|
|
return crules._matching_rules["awful.rules"]
|
|
end
|
|
end
|
|
})
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|