rc.lua: Switch from `awful.rules` to `ruled.client`.

It's the same module, but with a new name. The commit also switches
from the "one off" rule write to the incremental and signal based one.

This allows modules to add their own rules without having a race
condition against `rc.lua` and other modules. Previously, if a module
wasn't designed to prevent it, rules got destroyed each time.

awesomerc.lua

@@ -13,6 +13,8 @@ local wibox = require("wibox")
 local beautiful = require("beautiful")
 -- Notification library
 local naughty = require("naughty")
+-- Declarative object management
+local ruled = require("ruled")
 local menubar = require("menubar")
 local hotkeys_popup = require("awful.hotkeys_popup")
 -- Enable hotkeys help widget for VIM and other apps
@@ -439,60 +441,60 @@ end)
 -- {{{ Rules
 -- Rules to apply to new clients.
 -- @DOC_RULES@
-awful.rules.rules = {
+ruled.client.connect_signal("request::rules", function()
     -- @DOC_GLOBAL_RULE@
     -- All clients will match this rule.
-    { rule = { },
-      properties = { focus = awful.client.focus.filter,
-                     raise = true,
-                     screen = awful.screen.preferred,
-                     placement = awful.placement.no_overlap+awful.placement.no_offscreen
-     }
-    },
+    ruled.client.append_rule {
+        id         = "global",
+        rule       = { },
+        properties = {
+            focus     = awful.client.focus.filter,
+            raise     = true,
+            screen    = awful.screen.preferred,
+            placement = awful.placement.no_overlap+awful.placement.no_offscreen
+        }
+    }
 
     -- @DOC_FLOATING_RULE@
     -- Floating clients.
-    { rule_any = {
-        instance = {
-          "DTA",  -- Firefox addon DownThemAll.
-          "copyq",  -- Includes session name in class.
-          "pinentry",
+    ruled.client.append_rule {
+        id       = "floating",
+        rule_any = {
+            instance = { "copyq", "pinentry" },
+            class    = {
+                "Arandr", "Blueman-manager", "Gpick", "Kruler", "Sxiv",
+                "Tor Browser", "Wpa_gui", "veromix", "xtightvncviewer"
+            },
+            -- Note that the name property shown in xprop might be set slightly after creation of the client
+            -- and the name shown there might not match defined rules here.
+            name    = {
+                "Event Tester",  -- xev.
+            },
+            role    = {
+                "AlarmWindow",    -- Thunderbird's calendar.
+                "ConfigManager",  -- Thunderbird's about:config.
+                "pop-up",         -- e.g. Google Chrome's (detached) Developer Tools.
+            }
         },
-        class = {
-          "Arandr",
-          "Blueman-manager",
-          "Gpick",
-          "Kruler",
-          "MessageWin",  -- kalarm.
-          "Sxiv",
-          "Tor Browser", -- Needs a fixed window size to avoid fingerprinting by screen size.
-          "Wpa_gui",
-          "veromix",
-          "xtightvncviewer"},
-
-        -- Note that the name property shown in xprop might be set slightly after creation of the client
-        -- and the name shown there might not match defined rules here.
-        name = {
-          "Event Tester",  -- xev.
-        },
-        role = {
-          "AlarmWindow",  -- Thunderbird's calendar.
-          "ConfigManager",  -- Thunderbird's about:config.
-          "pop-up",       -- e.g. Google Chrome's (detached) Developer Tools.
-        }
-      }, properties = { floating = true }},
+        properties = { floating = true }
+    }
 
     -- @DOC_DIALOG_RULE@
     -- Add titlebars to normal clients and dialogs
-    { rule_any = {type = { "normal", "dialog" }
-      -- @DOC_CSD_TITLEBARS@
-      }, properties = { titlebars_enabled = true }
-    },
+    ruled.client.append_rule {
+        -- @DOC_CSD_TITLEBARS@
+        id         = "titlebars",
+        rule_any   = { type = { "normal", "dialog" } },
+        properties = { titlebars_enabled = true      }
+    }
 
     -- Set Firefox to always map on the tag named "2" on screen 1.
-    -- { rule = { class = "Firefox" },
-    --   properties = { screen = 1, tag = "2" } },
-}
+    -- ruled.tag.append_rule {
+    --     rule       = { class = "Firefox"     },
+    --     properties = { screen = 1, tag = "2" }
+    -- }
+end)
+
 -- }}}
 
 -- {{{ Titlebars