Module: ruled.client

Rules for clients.

This module applies rules to clients during startup (via client.manage, but its functions can be used for client matching in general.

All existing client properties can be used in rules. It is also possible to add random properties that will be later accessible as c.property_name (where c is a valid client object)

Syntax

You should fill this table with your rule and properties to apply. For example, if you want to set xterm maximized at startup, you can add:

Usage example

ruled.client.append_rule {
    rule = { class = 'xterm' },
    properties = {
        maximized_vertical   = true,
        maximized_horizontal = true
    },
}

-- Spawn xterm
awful.spawn('xterm')

If you want to set mplayer floating at startup, you can add:

Usage example

ruled.client.append_rule {
    rule = { class = 'mplayer' },
    properties = {
        floating  = true,
        placement = awful.placement.centered,
        width     = 640,
        height    = 480,
    },
}

-- Spawn xterm
for _=1, 5 do
    awful.spawn('xterm')
end

-- Spawn mplayer
awful.spawn('mplayer')

If you want to put Firefox on a specific tag at startup. It is possible to specify the tag with it’s object or by name:

Usage example

-- Select tag by object reference:
ruled.client.append_rule {
    rule_any    = {
        class = {'firefox'}
    },
    properties = {
        tag = screen[1].tags[3],
    },
}

-- Select tag by name:
ruled.client.append_rule {
    rule_any    = {
        class = {'thunderbird'}
    },
    properties = {
        tag = 'five',
    },
}

-- Spawn firefox and thunderbird
awful.spawn('firefox')
awful.spawn('thunderbird')

If you want to put Thunderbird on a specific screen at startup, use:

Usage example

mouse.coords {x = 2500, y = 100 }

-- Screen by IDs:
ruled.client.append_rule {
    rule_any    = {
        class = {'firefox'}
    },
    properties = {
        screen = 2,
    },
}

-- Screen by object:
ruled.client.append_rule {
    rule_any    = {
        class = {'thunderbird'}
    },
    properties = {
        screen = mouse.screen,
    },
}

-- Screen by output name:
ruled.client.append_rule {
    rule_any    = {
        class = {'xterm'}
    },
    properties = {
        screen = 'LVDS1',
    },
}

-- Spawn firefox, thunderbird and xterm
awful.spawn('firefox')
awful.spawn('thunderbird')
awful.spawn('xterm')

If you want to put Emacs on a specific tag at startup, and immediately switch to that tag you can add:

Usage example

-- Select tag by object reference:
ruled.client.append_rule {
    rule = { class = 'firefox' },
    properties = {
        tag            = screen[1].tags[4],
        switch_to_tags = true
    }
}

-- Spawn firefox
awful.spawn('firefox')

If you want to apply a custom callback to execute when a rule matched, for example to pause playing music from mpd when you start dosbox, you can add:

{ rule = { class = "dosbox" },
  callback = function(c)
     awful.spawn('mpc pause')
  end }

Note that all “rule” entries need to match. If any of the entry does not match, the rule won’t be applied.

If a client matches multiple rules, they are applied in the order they are put in this global rules table. If the value of a rule is a string, then the match function is used to determine if the client matches the rule.

If the value of a property is a function, that function gets called and function’s return value is used for the property.

To match multiple clients to a rule one need to use slightly different syntax:

{ rule_any = { class = { "MPlayer", "Nitrogen" }, instance = { "xterm" } },
  properties = { floating = true } }

To match multiple clients with an exception one can couple rules.except or rules.except_any with the rules:

{ rule = { class = "Firefox" },
  except = { instance = "Navigator" },
  properties = {floating = true},
},

{ rule_any = { class = { "Pidgin", "Xchat" } },
  except_any = { role = { "conversation" } },
  properties = { tag = "1" }
}

{ rule = {},
  except_any = { class = { "Firefox", "Vim" } },
  properties = { floating = true }
}

Note that all rules can have an id field. This can then be used to find the rule. For example, it can be used in remove_rule instead of the table.

Flowchart

Client rules

Applicable client properties

The table below holds the list of default client properties along with some extra properties that are specific to the rules. Note that any property can be set in the rules and interpreted by user provided code. This table only represent those offered by default.

Info:

Functions

ruled.client.append_rule (rule) Add a new rule to the default set.
ruled.client.append_rules (rules) Add a new rules to the default set.
ruled.client.remove_rule (rule) Remove a new rule to the default set.

Static module functions

ruled.client.match (c, rule) -> bool Check if a client matches a rule.
ruled.client.match_any (c, rule) -> bool Check if a client matches any part of a rule.
ruled.client.matches (c, entry) -> bool Does a given rule entry match a client?
ruled.client.matching_rules (c, _rules) -> table Get list of matching rules for a client.
ruled.client.matches_list (c, _rules) -> bool Check if a client matches a given set of rules.
ruled.client.remove_rule_source (name) -> boolean Remove a source.
ruled.client.apply (c) Apply ruled.client.rules to a client.
ruled.client.add_rule_source (name, callback, depends_on, precede) -> boolean Add a new rule source.
ruled.client.execute (c, props[, callbacks]) Apply properties and callbacks to a client.

Rule sources

awful.rules The default ruled.client source.
awful.spawn The rule source for clients spawned by awful.spawn.
awful.spawn_once The rule source for clients spawned by awful.spawn.once and single_instance.

Rule components

properties table A table whose content will be used to set the target object properties.
callbacks table A list of callback function to call after the properties have been apploed.
rule table A table whose content will be compared to the target object current properties.
rule_any table Similar to rule, but each entry is a table with multiple values.
except table The negative equivalent of rule.
except_any table The negative equivalent of rule_any.
rule_every table Matches when one of every \“category\” of components match.
rule_lesser table A table whose content will be compared to the target object current properties.
rule_greater table A table whose content will be compared to the target object current properties.
id table or string or number or function An identifier for this rule.

Tables

ruled.client.extra_properties Extra rules properties.
ruled.client.high_priority_properties Extra high priority properties.
ruled.client.delayed_properties Delayed properties.


Functions

Methods
ruled.client.append_rule (rule)
Add a new rule to the default set.

Parameters:

  • rule table A valid rule.
ruled.client.append_rules (rules)
Add a new rules to the default set.

Parameters:

  • rules table A table with rules.
ruled.client.remove_rule (rule)
Remove a new rule to the default set.

Parameters:

Static module functions

ruled.client.match (c, rule) -> bool
Check if a client matches a rule.

Parameters:

  • c client The client.
  • rule table The rule to check.

Returns:

    bool True if it matches, false otherwise.
ruled.client.match_any (c, rule) -> bool
Check if a client matches any part of a rule.

Parameters:

  • c client The client.
  • rule table The rule to check.

Returns:

    bool True if at least one rule is matched, false otherwise.
ruled.client.matches (c, entry) -> bool
Does a given rule entry match a client?

Parameters:

Returns:

    bool
ruled.client.matching_rules (c, _rules) -> table
Get list of matching rules for a client.

Parameters:

  • c client The client.
  • _rules table The rules to check. List with “rule”, “rule_any”, “except” and “except_any” keys.

Returns:

    table The list of matched rules.
ruled.client.matches_list (c, _rules) -> bool
Check if a client matches a given set of rules.

Parameters:

Returns:

    bool True if at least one rule is matched, false otherwise.
ruled.client.remove_rule_source (name) -> boolean
Remove a source.

Parameters:

  • name string The source name.

Returns:

    boolean If the source was removed.
ruled.client.apply (c)
Apply ruled.client.rules to a client.

Parameters:

  • c client The client.
ruled.client.add_rule_source (name, callback, depends_on, precede) -> boolean
Add a new rule source.

A rule source is a provider called when a client is managed (started). It allows to configure the client by providing properties that should be applied. By default, Awesome provides 2 sources:

It is possible to register new callbacks to modify the properties table before it is applied. Each provider is executed sequentially and modifies the same table. If the first provider set a property, then the second can override it, then the third, etc. Once the providers are exhausted, the properties are applied on the client.

It is important to note that properties themselves have their own dependencies. For example, a tag property implies a screen. Therefor, if a screen is already specified, then it will be ignored when the rule is executed. Properties also have their own priorities. For example, the titlebar and border_width need to be applied before the x and y positions are set. Otherwise, it will be off or the client will shift upward everytime Awesome is restarted. A rule source cannot change this. It is up to the callback to be aware of the dependencies and avoid to introduce issues. For example, if the source wants to set a screen, it has to check if the tag, tags or new_tag are on that screen or remove those properties. Otherwise, they will be ignored once the rule is applied.

Parameters:

  • name string The provider name. It must be unique.
  • callback The callback that is called to produce properties.
    • c client The client
    • properties table The current properties. The callback should add to and overwrite properties in this table
    • callbacks table A table of all callbacks scheduled to be executed after the main properties are applied.
  • depends_on table A list of names of sources this source depends on (sources that must be executed before name. (default {})
  • precede table A list of names of sources this source have a priority over. (default {})

Returns:

    boolean Returns false if a dependency conflict was found.
ruled.client.execute (c, props[, callbacks]) · 1 permission
Apply properties and callbacks to a client.

Parameters:

  • c client The client.
  • props table Properties to apply.
  • callbacks table Callbacks to apply. (optional)

Click to display more

Requested actions or permissions:

Class Permission Context Default Description
clienttitlebarsrulesgrantedThe titlebars_enabled is set in the rules.

Rule sources

awful.rules
The default ruled.client source.

It is called awful.rules for historical reasons.

Has priority over:

nothing

awful.spawn

The rule source for clients spawned by awful.spawn.

Has priority over:

awful.spawn_once

The rule source for clients spawned by awful.spawn.once and single_instance.

Has priority over:

Depends on:

Rule components

properties table
A table whose content will be used to set the target object properties.

See also:

callbacks table
A list of callback function to call after the properties have been apploed.

See also:

rule table
A table whose content will be compared to the target object current properties.

See also:

rule_any table
Similar to rule, but each entry is a table with multiple values.

See also:

except table
The negative equivalent of rule.

See also:

except_any table
The negative equivalent of rule_any.

See also:

rule_every table
Matches when one of every \“category\” of components match.

See also:

rule_lesser table
A table whose content will be compared to the target object current properties.

The comparison will be made using the lesser (<) operator.

See also:

rule_greater table
A table whose content will be compared to the target object current properties.

The comparison will be made using the greater (>) operator.

See also:

id table or string or number or function
An identifier for this rule.

It can be anything. It will be compared with the == operator. Strings are highly recommended.

Setting an id is useful to be able to remove the rule by using its id instead of a table reference. Modules can also listen to rule::appended and modify or disable a rule.

Tables

ruled.client.extra_properties

Extra rules properties.

These properties are used in the rules only and are not sent to the client afterward.

To add a new properties, just do:

function ruled.client.extra_properties.my_new_property(c, value, props)
    -- do something
end

By default, the table has the following functions:

  • geometry
  • placement
ruled.client.high_priority_properties

Extra high priority properties.

Some properties, such as anything related to tags, geometry or focus, will cause a race condition if set in the main property section. This is why they have a section for them.

To add a new properties, just do:

function ruled.client.high_priority_properties.my_new_property(c, value, props)
    -- do something
end

By default, the table has the following functions:

  • tag
  • new_tag
ruled.client.delayed_properties
Delayed properties. Properties applied after all other categories.
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