Extract default mux worker timeout in a constant

When invoked, will kill the client returned by
`layout.current_client`. ICCCM WM_DELETE_WINDOW is used instead if the
window reports to support this protocol.

.travis.yml

@@ -5,8 +5,8 @@ rvm:
   - ruby-head
   - 2.1
 before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq twm x11-utils xdotool
+  - travis_retry sudo apt-get update -qq
+  - travis_retry sudo apt-get install -qq twm x11-utils xdotool
 matrix:
   allow_failures:
     - rvm: ruby-head

README.md

@@ -1,17 +1,40 @@
 uh-wm
 =====
 
-  Xlib Window Manager prototype.
-
 [![Version      ][badge-version-img]][badge-version-uri]
 [![Build status ][badge-build-img]][badge-build-uri]
 [![Code Climate ][badge-cclimate-img]][badge-cclimate-uri]
 
 
+  uh-wm is a minimalistic tiling and stacking window manager for X. It
+shares some similarities with dwm and wmii, but is written in ruby so
+you can configure and extend features directly with ruby code.
+
+  The layout strategy is interchangeable, the default one being the
+`uh-layout` ruby gem. A layout is a simple ruby object responding to
+specific messages.
+
+  Main features:
+
+  * Xinerama support;
+  * multiple event handling strategy: blocking or multiplexing
+    with `select()`;
+  * configuration with a run control file (ruby DSL);
+  * key bindings with user defined code as callback;
+  * configurable modifier key;
+  * support user-defined layout strategies;
+  * program execution;
+  * no re-parenting (therefore, no window decoration either);
+  * no grabbing of the modifier key alone;
+  * no mouse handling;
+  * no EWMH support;
+  * very limited ICCCM support.
+
+
 Getting started
 ---------------
 
-### Installation (requires ruby ~> 2.1 and rubygems)
+### Installation (requires ruby ~> 2.1 with rubygems)
 
 ```
 $ gem install uh-wm
@@ -24,13 +47,15 @@ $ gem install uh-wm
 Usage: uhwm [options]
 
 options:
-    -h, --help                       print this message
     -v, --verbose                    enable verbose mode
     -d, --debug                      enable debug mode
     -f, --run-control PATH           specify alternate run control file
     -r, --require PATH               require ruby feature
     -l, --layout LAYOUT              specify layout
     -w, --worker WORKER              specify worker
+
+    -h, --help                       print this message
+    -V, --version                    print version
 ```
 
 

Rakefile

@@ -10,13 +10,19 @@ XEPHYR_SCREENS_XINERAMA =
 
 task default: %i[features spec]
 
-Cucumber::Rake::Task.new(:features)
+Cucumber::Rake::Task.new :features do |t|
+  t.profile = 'quiet' if ENV.key? 'TRAVIS'
+end
 
-RSpec::Core::RakeTask.new
+RSpec::Core::RakeTask.new do |t|
+  t.rspec_opts = '--format progress' if ENV.key? 'TRAVIS'
+end
 
 desc 'Run uhwm in a Xephyr X server'
 task :run do
-  uhwm_args = ARGV.slice_after('--').to_a.last || %w[-d]
+  uhwm_args = ARGV.include?('--') ?
+    ARGV.slice_after('--').to_a.last :
+    %w[-d]
   Tempfile.create('uhwm_xinitrc') do |xinitrc|
     xinitrc.write <<-eoh
 [ -f $HOME/.Xdefaults ] && xrdb $HOME/.Xdefaults

config/cucumber.yaml

@@ -1 +1,2 @@
-default: --require features/support --require features/steps
+default: --require features/support --require features/steps --no-source
+quiet: --format progress

features/actions/kill.feature

@@ -0,0 +1,11 @@
+Feature: `kill' action keyword
+
+  @icccm_window
+  Scenario: kills current client
+    Given uhwm is running with this run control file:
+      """
+      key(:f) { kill_current }
+      """
+    And an ICCCM compliant window is mapped
+    When I press the alt+f keys
+    Then the ICCCM window must be unmapped by the manager

features/actions/layout_delegation.feature

@@ -0,0 +1,28 @@
+Feature: `layout_*' action keywords
+
+  Scenario: delegates messages matching `layout_*' to `layout_handle_*'
+    Given a file named layout.rb with:
+      """
+      class Layout
+        def register _; end
+
+        def handle_some_action arg
+          puts "testing_layout_action_#{arg}"
+        end
+      end
+      """
+    And a run control file with:
+      """
+      key(:f) { layout_some_action 'with_arg' }
+      """
+    And uhwm is running with options -v -r./layout.rb -l Layout
+    When I press the alt+f keys
+    Then the output must contain "testing_layout_action_with_arg"
+
+  Scenario: logs an error about unimplemented messages
+    Given uhwm is running with this run control file:
+      """
+      key(:f) { layout_unknown_action }
+      """
+    When I press the alt+f keys
+    Then the output must match /layout.+no.+implem.+handle_unknown_action/i

features/actions/log_separator.feature

@@ -0,0 +1,9 @@
+Feature: `log_separator' action keyword
+
+  Scenario: logs a separator
+    Given uhwm is running with this run control file:
+      """
+      key(:f) { log_separator }
+      """
+    When I press the alt+f keys
+    Then the output must contain "- - - - - - - - - - - - - - - - - - - - - - -"

features/cli/layout.feature

@@ -4,8 +4,14 @@ Feature: layout CLI option
     Given a file named layout.rb with:
       """
       class MyLayout
-        def register _; end
+        def register *_
+          puts 'testing_cli_layout'
+        end
       end
       """
-    When I run uhwm with option -v -r./layout -l MyLayout
-    Then the output must match /layout.+mylayout/i
+    When I run uhwm with options -r./layout -l MyLayout
+    Then the output must contain "testing_cli_layout"
+
+  Scenario: resolves layout class from the root namespace
+    When I run uhwm with option -l Layout
+    Then the output must contain "uninitialized constant Layout"

features/cli/require.feature

@@ -1,5 +1,9 @@
 Feature: require CLI option
 
   Scenario: requires a ruby feature
-    When I run uhwm with option -v -r abbrev
-    Then the output must match /load.+abbrev.+ruby feature/i
+    Given a file named my_feature.rb with:
+      """
+      puts 'testing_feature_load'
+      """
+    When I run uhwm with option -r ./my_feature.rb
+    Then the output must contain "testing_feature_load"

features/cli/run_control.feature

@@ -3,7 +3,7 @@ Feature: run control file path CLI option
   Scenario: specifies run control file path
     Given a file named uhwmrc.rb with:
       """
-      puts 'run control evaluation'
+      puts 'testing_run_control'
       """
     When I run uhwm with option -f uhwmrc.rb
-    Then the output must contain "run control evaluation"
+    Then the output must contain "testing_run_control"

features/cli/worker.feature

@@ -1,9 +1,9 @@
 Feature: worker CLI option
 
   Scenario: uses the blocking worker when `block' is given
-    When I run uhwm with option -v -w block
+    When I run uhwm with options -v -w block
     Then the output must match /work.+event.+block/i
 
   Scenario: uses the multiplexing worker when `mux' is given
-    When I run uhwm with option -v -w mux
+    When I run uhwm with options -v -w mux
     Then the output must match /work.+event.+mux/i

features/layout/manage.feature

@@ -1,16 +1,12 @@
 Feature: layout client management
 
-  Scenario: sends the #<< message when telling the layout to manage a client
-    Given a file named layout.rb with:
-      """
-      class Layout
-        def register *_; end
+  Background:
+    Given uhwm is running
 
-        def << client
-          puts client
-        end
-      end
-      """
-    And uhwm is running with options -v -r./layout -l Layout
+  Scenario: maps new client window
     When a window requests to be mapped
-    Then the output must contain the window name
+    Then the window must be mapped
+
+  Scenario: focuses new client window
+    When a window is mapped
+    Then the window must be focused

features/layout/protocol.feature

@@ -0,0 +1,56 @@
+Feature: layout protocol
+
+  Background:
+    Given a file named layout.rb with:
+      """
+      class Layout
+        def register display
+          puts display
+          display.create_subwindow(Uh::Geo.new(0, 0, 640, 16)).tap do |o|
+            o.show
+          end
+        end
+
+        def << client
+          puts "testing_#<<_#{client.name}"
+          client.show
+        end
+
+        def remove client
+          puts "testing_#remove_#{client.name}"
+        end
+
+        def update client
+          puts "testing_#update_#{client.name}"
+        end
+
+        def expose window
+          puts "testing_#expose_#{window.id}"
+        end
+      end
+      """
+
+  Scenario: tells the layout to register with #register message
+    When I run uhwm with option -r./layout -l Layout
+    Then the output must contain current display
+
+  Scenario: tells the layout to manage a client with #<< message
+    Given uhwm is running with options -v -r./layout -l Layout
+    When a window requests to be mapped
+    Then the output must contain "testing_#<<_XClient/default"
+
+  Scenario: tells the layout to unmanage a client with #remove message
+    Given uhwm is running with options -v -r./layout -l Layout
+    And a window is mapped
+    When the window is unmapped
+    Then the output must contain "testing_#remove_XClient/default"
+
+  Scenario: tells the layout to update a changed client with #update message
+    Given uhwm is running with options -v -r./layout -l Layout
+    And a window is mapped
+    When the window name changes to "testing_new_name"
+    Then the output must contain "testing_#update_testing_new_name"
+
+  Scenario: tells the layout about an exposed window with #expose message
+    Given I run uhwm with options -r./layout -l Layout
+    Then the output must match /testing_#expose_\d+/

features/layout/registration.feature

@@ -1,13 +0,0 @@
-Feature: layout registration
-
-  Scenario: sends the #register message to the layout with the display
-    Given a file named layout.rb with:
-      """
-      class Layout
-        def register display
-          puts display
-        end
-      end
-      """
-    When I run uhwm with option -r./layout -l Layout
-    Then the output must contain current display

features/layout/unmanage.feature

@@ -0,0 +1,10 @@
+Feature: layout client unmanagement
+
+  Background:
+    Given uhwm is running
+    And a first window is mapped
+    And a second window is mapped
+
+  Scenario: maps another window
+    When the second window is unmapped
+    Then the first window must be mapped

features/manager/change.feature

@@ -0,0 +1,7 @@
+Feature: clients window properties updating
+
+  Scenario: logs when the window properties of a client change
+    Given uhwm is running
+    And a window is mapped
+    When the window name changes to "testing_new_name"
+    Then the output must match /updat.+testing_new_name/i

features/manager/expose.feature

@@ -0,0 +1,5 @@
+Feature: expose events handling
+
+  Scenario: logs when an expose event is handled
+    Given uhwm is running
+    Then the output must match /expos.+window.+\d+/i

features/manager/manage.feature

@@ -0,0 +1,14 @@
+Feature: manager client management
+
+  Background:
+    Given uhwm is running
+
+  Scenario: logs when a new client is managed
+    When a window requests to be mapped
+    Then the output must match /manag.+xclient/i
+
+  Scenario: manages a given client only once
+    When a window requests to be mapped 2 times
+    And I quit uhwm
+    Then the output must not match /manag.*\n.*manag/mi
+    And the output must not match /xerror/i

features/manager/unmanage.feature

@@ -0,0 +1,13 @@
+Feature: manager client unmanagement
+
+  Background:
+    Given uhwm is running
+    And a window is mapped
+
+  Scenario: logs when a new client is unmanaged
+    When the window is unmapped
+    Then the output must match /unmanag.+xclient/i
+
+  Scenario: unmanages client on destroy notify X events
+    When the window is destroyed
+    Then the output must match /unmanag.+xclient/i

features/manager/x_errors.feature

@@ -0,0 +1,17 @@
+Feature: X errors logging
+
+  Scenario: logs error details
+    Given a file named layout.rb with:
+      """
+      class Layout
+        def register _; end
+
+        # Focusing a client before mapping will force an error
+        def << client
+          client.focus
+        end
+      end
+      """
+    And uhwm is running with options -v -r./layout -l Layout
+    When a window requests to be mapped
+    Then the output must match /x.*error.+x_setinputfocus.+/i

features/run_control/evaluation.feature

@@ -1,18 +1,10 @@
 Feature: run control file evaluation
 
-  Scenario: evaluates the default run control file when present
-    Given a run control file with:
-      """
-      puts 'run control evaluation'
-      """
-    When I start uhwm
-    Then the output must contain "run control evaluation"
-
   Scenario: reports run control code in backtrace on errors
     Given a run control file with:
       """
       'no error on first line'
-      fail 'fails on second line'
+      fail 'testing_rc_failure'
       """
     When I start uhwm
-    Then the output must match /\.uhwmrc\.rb:2:.+fails on second line/
+    Then the output must match /\.uhwmrc\.rb:2:.+testing_rc_failure/

features/run_control/key.feature

@@ -3,23 +3,31 @@ Feature: `key' run control keyword
   Scenario: defines code to run when given key is pressed
     Given uhwm is running with this run control file:
       """
-      key(:f) { puts 'trigger f key code' }
+      key(:f) { puts 'testing_rc_key' }
       """
     When I press the alt+f keys
-    Then the output must contain "trigger f key code"
+    Then the output must contain "testing_rc_key"
+
+  Scenario: defines code to run when given keys are pressed
+    Given uhwm is running with this run control file:
+      """
+      key(:f, :shift) { puts 'testing_rc_key' }
+      """
+    When I press the alt+shift+f keys
+    Then the output must contain "testing_rc_key"
 
   Scenario: translates common key names to their X equivalent
     Given uhwm is running with this run control file:
       """
-      key(:enter) { puts 'trigger return key code' }
+      key(:enter) { puts 'testing_rc_key' }
       """
     When I press the alt+Return keys
-    Then the output must contain "trigger return key code"
+    Then the output must contain "testing_rc_key"
 
   Scenario: translates upcased key names to combination with shift key
     Given uhwm is running with this run control file:
       """
-      key(:F) { puts 'trigger shift+f key code' }
+      key(:F) { puts 'testing_rc_key' }
       """
     When I press the alt+shift+f keys
-    Then the output must contain "trigger shift+f key code"
+    Then the output must contain "testing_rc_key"

features/run_control/layout.feature

@@ -0,0 +1,39 @@
+Feature: `layout' run control keyword
+
+  Background:
+    Given a file named my_layout.rb with:
+      """
+      class MyLayout
+        def initialize **options
+          @options = options
+        end
+
+        def register *_
+          puts "testing_rc_layout_#{@options.inspect}"
+        end
+      end
+      """
+
+  Scenario: configures a layout class
+    Given a run control file with:
+      """
+      layout MyLayout
+      """
+    When I run uhwm with options -r./my_layout
+    Then the output must contain "testing_rc_layout_{}"
+
+  Scenario: configures a layout class with options
+    Given a run control file with:
+      """
+      layout MyLayout, foo: :bar
+      """
+    When I run uhwm with options -r./my_layout
+    Then the output must contain "testing_rc_layout_{:foo=>:bar}"
+
+  Scenario: configures a layout instance
+    Given a run control file with:
+      """
+      layout MyLayout.new
+      """
+    When I run uhwm with options -r./my_layout
+    Then the output must contain "testing_rc_layout_{}"

features/run_control/modifier.feature

@@ -1,10 +1,9 @@
 Feature: `modifier' run control keyword
 
   Scenario: configures the modifier key
-    Given a run control file with:
+    Given uhwm is running with this run control file:
       """
       modifier :ctrl
       """
-    And uhwm is running
-    When I press the ctrl+q keys
+    When I press the ctrl+shift+q keys
     Then uhwm must terminate successfully

features/run_control/worker.feature

@@ -1,9 +1,8 @@
 Feature: `worker' run control keyword
 
   Scenario: configures the modifier key
-    Given a run control file with:
+    Given uhwm is running with this run control file:
       """
       worker :mux
       """
-    And I start uhwm
     Then the output must match /work.+event.+mux/i

features/session/connection.feature

@@ -1,5 +0,0 @@
-Feature: connection to X server
-
-  Scenario: connects to X server
-    When I start uhwm
-    Then it must connect to X display

features/session/termination.feature

@@ -9,5 +9,4 @@ Feature: program termination
 
   Scenario: logs about termination
     When I tell uhwm to quit
-    Then uhwm must terminate successfully
-    And the output must match /terminat/i
+    Then the output must match /terminat/i

features/steps/output_steps.rb

@@ -16,7 +16,6 @@ options:
 end
 
 Then /^the output must contain exactly the version$/ do
-  #require File.expand_path('../lib/uh/wm/version', __FILE__)
   assert_exact_output "%s\n" % Uh::WM::VERSION, all_output
 end
 
@@ -24,6 +23,21 @@ Then /^the output must match \/([^\/]+)\/([a-z]*)$/ do |pattern, options|
   uhwm_wait_output Regexp.new(pattern, options)
 end
 
+Then /^the output must not match \/([^\/]+)\/([a-z]*)$/ do |pattern, options|
+  expect(all_output).not_to match Regexp.new(pattern, options)
+end
+
+Then /^the output must match \/([^\/]+)\/([a-z]*) at least (\d+) times$/ do
+    |pattern, options, times|
+  uhwm_wait_output Regexp.new(pattern, options), times.to_i
+end
+
+Then /^the output must match \/([^\/]+)\/([a-z]*) exactly (\d+) times$/ do
+    |pattern, options, times|
+  scans = uhwm_wait_output Regexp.new(pattern, options)
+  expect(scans.size).to eq times.to_i
+end
+
 Then /^the output must contain:$/ do |content|
   uhwm_wait_output content.to_s
 end

features/steps/run_steps.rb

@@ -24,7 +24,12 @@ When /^I run uhwm with options? (-.+)$/ do |options|
 end
 
 When /^I tell uhwm to quit$/ do
-  x_key 'alt+q'
+  uhwm_request_quit
+end
+
+When /^I quit uhwm$/ do
+  uhwm_request_quit
+  assert_exit_status 0
 end
 
 Then /^the exit status must be (\d+)$/ do |exit_status|

features/steps/x_steps.rb

@@ -1,12 +1,68 @@
+Given /^an ICCCM compliant window is mapped$/ do
+  icccm_window_start
+  timeout_until 'window not mapped after %d seconds' do
+    x_window_map_state(icccm_window_name) == 'IsViewable'
+  end
+end
+
+Given /^a(?:\s(\w+))? window is mapped$/ do |ident|
+  x_client(ident).map.sync
+  timeout_until 'window not mapped after %d seconds' do
+    x_window_map_state(x_client(ident).window_id) == 'IsViewable'
+  end
+end
+
 When /^I press the ([^ ]+) keys?$/ do |keys|
   x_key keys
 end
 
-When /^a window requests to be mapped$/ do
-  x_window_map
+When /^I press the ([^ ]+) keys? (\d+) times$/ do |keys, times|
+  times.to_i.times { x_key keys }
 end
 
-Then /^it must connect to X display$/ do
-  uhwm_wait_output 'Connected to'
-  expect(x_socket_check uhwm_pid).to be true
+When /^I quickly press the ([^ ]+) keys? (\d+) times$/ do |keys, times|
+  x_key [keys] * times.to_i, delay: 0
+end
+
+When /^a window requests to be mapped$/ do
+  x_client.map.sync
+end
+
+When /^a window requests to be mapped (\d+) times$/ do |times|
+  x_client.map times: times.to_i
+end
+
+When /^the(?:\s(\w+))? window is unmapped$/ do |ident|
+  x_client(ident).unmap.sync
+  timeout_until 'window not unmapped after %d seconds' do
+    x_window_map_state(x_client(ident).window_id) == 'IsUnMapped'
+  end
+end
+
+When /^the window is destroyed$/ do
+  x_client.destroy.sync
+end
+
+When /^the window name changes to "([^"]+)"$/ do |name|
+  x_client.window_name = name
+end
+
+Then /^the(?:\s(\w+))? window must be mapped$/ do |ident|
+  timeout_until 'window not mapped after %d seconds' do
+    x_window_map_state(x_client(ident).window_id) == 'IsViewable'
+  end
+end
+
+Then /^the ICCCM window must be unmapped by the manager$/ do
+  uhwm_wait_output /unmanag.+#{icccm_window_name}/i
+end
+
+Then /^the window must be focused$/ do
+  timeout_until 'window not focused after %d seconds' do
+    x_focused_window_id == x_client.window_id
+  end
+end
+
+Then /^the input event mask must include (.+)$/ do |mask|
+  expect(x_input_event_masks).to include mask
 end

features/support/env.rb

@@ -28,6 +28,10 @@ Around '@other_wm_running' do |_, block|
   with_other_wm { block.call }
 end
 
+After '@icccm_window' do
+  icccm_window_ensure_stop
+end
+
 if ENV.key? 'TRAVIS'
   ENV['UHWMTEST_TIMEOUT'] = 8.to_s
 end

features/workers/block.feature

@@ -0,0 +1,15 @@
+Feature: blocking worker
+
+  Scenario: processes initial events
+    Given uhwm is running with options -d -w block
+    Then the output must match /xevent/i at least 2 times
+
+  Scenario: processes generated events
+    Given a run control file with:
+      """
+      key(:f) { puts 'testing_worker_read' }
+      """
+    And uhwm is running with options -v -w block
+    When I quickly press the alt+f key 1024 times
+    And I quit uhwm
+    Then the output must match /(testing_worker_read)/ exactly 1024 times

features/workers/mux.feature

@@ -0,0 +1,15 @@
+Feature: multiplexing worker
+
+  Scenario: processes initial events
+    Given uhwm is running with options -d -w mux
+    Then the output must match /xevent/i at least 2 times
+
+  Scenario: processes generated events
+    Given a run control file with:
+      """
+      key(:f) { puts 'testing_worker_read' }
+      """
+    And uhwm is running with options -d -w mux
+    When I press the alt+f key 3 times
+    And I quit uhwm
+    Then the output must match /(testing_worker_read)/ exactly 3 times

lib/uh/wm.rb

@@ -3,6 +3,8 @@ require 'logger'
 require 'optparse'
 require 'uh'
 
+require 'uh/wm/env_logging'
+
 require 'uh/wm/actions_handler'
 require 'uh/wm/cli'
 require 'uh/wm/client'

lib/uh/wm/actions_handler.rb

@@ -1,32 +1,75 @@
 module Uh
   module WM
     class ActionsHandler
+      include EnvLogging
+
+      extend Forwardable
+      def_delegator :@env, :layout
+
       def initialize env, events
         @env, @events = env, events
       end
 
-      def evaluate code
-        instance_eval &code
+      def evaluate code = nil, &block
+        if code
+          instance_exec &code
+        else
+          instance_exec &block
+        end
       end
 
       def quit
+        log 'Quit requested'
         @events.emit :quit
       end
 
       def execute command
-        @env.log "Execute: #{command}"
+        log "Execute: #{command}"
         pid = fork do
           fork do
             Process.setsid
             begin
               exec command
             rescue Errno::ENOENT => e
-              @env.log_error "ExecuteError: #{e}"
+              log_error "ExecuteError: #{e}"
             end
           end
         end
         Process.waitpid pid
       end
+
+      def kill_current
+        layout.current_client.kill
+      end
+
+      def log_separator
+        log '- ' * 24
+      end
+
+      def method_missing(m, *args, &block)
+        if respond_to? m
+          meth = layout_method m
+          log "#{layout.class.name}##{meth} #{args.inspect}"
+          begin
+            layout.send(meth, *args)
+          rescue NoMethodError
+            log_error "Layout does not implement `#{meth}'"
+          end
+        else
+          super
+        end
+      end
+
+      def respond_to_missing?(m, *)
+        m.to_s =~ /\Alayout_/ || super
+      end
+
+
+      private
+
+      def layout_method(m)
+        m.to_s.gsub(/\Alayout_/, 'handle_').to_sym
+      end
     end
   end
 end

lib/uh/wm/cli.rb

@@ -3,6 +3,8 @@ module Uh
     class CLI
       ArgumentError = Class.new(ArgumentError)
 
+      include EnvLogging
+
       USAGE = "Usage: #{File.basename $0} [options]".freeze
 
       EX_USAGE    = 64
@@ -63,10 +65,10 @@ module Uh
           end
           opts.on '-r', '--require PATH', 'require ruby feature' do |feature|
             require feature
-            @env.log "Loaded `#{feature}' ruby feature"
+            log "Loaded `#{feature}' ruby feature"
           end
           opts.on '-l', '--layout LAYOUT', 'specify layout' do |layout|
-            @env.layout_class = self.class.const_get layout.to_sym
+            @env.layout_class = Object.const_get layout.to_sym
           end
           opts.on '-w', Workers.types, '--worker WORKER',
               'specify worker' do |worker|

lib/uh/wm/client.rb

@@ -1,8 +1,10 @@
 module Uh
   module WM
     class Client
-      attr_reader   :window, :unmap_count
-      attr_accessor :geo
+      include GeoAccessors
+
+      attr_reader   :window
+      attr_accessor :geo, :unmap_count
 
       def initialize window, geo = nil
         @window       = window
@@ -31,6 +33,16 @@ module Uh
         @wclass ||= @window.wclass
       end
 
+      def update_window_properties
+        @wname  = @window.name
+        @wclass = @window.wclass
+      end
+
+      def configure
+        @window.configure @geo
+        self
+      end
+
       def moveresize
         @window.moveresize @geo
         self
@@ -54,6 +66,20 @@ module Uh
         @window.focus
         self
       end
+
+      def kill
+        if @window.icccm_wm_protocols.include? :WM_DELETE_WINDOW
+          @window.icccm_wm_delete
+        else
+          @window.kill
+        end
+        self
+      end
+
+      def kill!
+        window.kill
+        self
+      end
     end
   end
 end

lib/uh/wm/dispatcher.rb

@@ -16,7 +16,9 @@ module Uh
       end
 
       def emit *key, args: []
-        @hooks[translate_key key].each { |e| e.call *args }
+        value = nil
+        @hooks[translate_key key].each { |e| value = e.call *args }
+        value
       end
 
 

lib/uh/wm/env.rb

@@ -5,7 +5,7 @@ module Uh
 
       MODIFIER  = :mod1
       KEYBINDS  = {
-        q: proc { quit }
+        [:q, :shift] => proc { quit }
       }.freeze
       WORKER    = :block
 
@@ -21,8 +21,8 @@ module Uh
       def_delegators  :@output, :print, :puts
 
       attr_reader   :output, :keybinds
-      attr_accessor :verbose, :debug, :rc_path, :layout_class, :modifier,
-                    :worker
+      attr_accessor :verbose, :debug, :rc_path, :modifier, :worker,
+                    :layout, :layout_class
 
       def initialize output
         @output   = output

lib/uh/wm/env_logging.rb

@@ -0,0 +1,8 @@
+module Uh
+  module WM
+    module EnvLogging
+      extend Forwardable
+      def_delegators :@env, :log, :log_error, :log_debug
+    end
+  end
+end

lib/uh/wm/manager.rb

@@ -6,6 +6,7 @@ module Uh
                     Events::SUBSTRUCTURE_REDIRECT_MASK |
                     Events::SUBSTRUCTURE_NOTIFY_MASK |
                     Events::STRUCTURE_NOTIFY_MASK
+      DEFAULT_GEO = Geo.new(0, 0, 320, 240).freeze
 
       attr_reader :modifier, :display, :clients
 
@@ -45,6 +46,42 @@ module Uh
         @display.grab_key keysym.to_s, mod_mask
       end
 
+      def configure window
+        if client = client_for(window)
+          client.configure
+        else
+          geo = @events.emit :configure, args: window
+          window.configure_event geo ? geo : DEFAULT_GEO
+        end
+      end
+
+      def map window
+        return if window.override_redirect? || client_for(window)
+        @clients << client = Client.new(window)
+        @events.emit :manage, args: client
+        @display.listen_events window, Events::PROPERTY_CHANGE_MASK
+      end
+
+      def unmap window
+        return unless client = client_for(window)
+        if client.unmap_count > 0
+          client.unmap_count -= 1
+        else
+          unmanage client
+        end
+      end
+
+      def destroy window
+        return unless client = client_for(window)
+        unmanage client
+      end
+
+      def update_properties window
+        return unless client = client_for(window)
+        client.update_window_properties
+        @events.emit :change, args: client
+      end
+
       def handle_next_event
         handle @display.next_event
       end
@@ -63,7 +100,7 @@ module Uh
       private
 
       def handle_error *args
-        @dispatcher.emit :error, args: args
+        @events.emit :xerror, args: args
       end
 
       def handle_key_press event
@@ -73,9 +110,37 @@ module Uh
         @events.emit :key, *key_selector
       end
 
+      def handle_configure_request event
+        configure event.window
+      end
+
+      def handle_destroy_notify event
+        destroy event.window
+      end
+
+      def handle_expose event
+        @events.emit :expose, args: event.window
+      end
+
       def handle_map_request event
-        @clients << client = Client.new(event.window)
-        @events.emit :manage, args: client
+        map event.window
+      end
+
+      def handle_property_notify event
+        update_properties event.window
+      end
+
+      def handle_unmap_notify event
+        unmap event.window
+      end
+
+      def client_for window
+        @clients.find { |e| e.window == window }
+      end
+
+      def unmanage client
+        @clients.delete client
+        @events.emit :unmanage, args: client
       end
 
       def check_other_wm!

lib/uh/wm/run_control.rb

@@ -28,8 +28,20 @@ module Uh
         @env.modifier = mod
       end
 
-      def key keysym, &block
-        @env.keybinds[translate_keysym keysym] = block
+      def key *keysyms, &block
+        @env.keybinds[translate_keysym *keysyms] = block
+      end
+
+      def layout arg, **options
+        if arg.is_a? Class
+          if options.any?
+            @env.layout = arg.new options
+          else
+            @env.layout_class = arg
+          end
+        else
+          @env.layout = arg
+        end
       end
 
       def worker type, **options
@@ -39,7 +51,8 @@ module Uh
 
       private
 
-      def translate_keysym keysym
+      def translate_keysym keysym, modifier = nil
+        return [translate_keysym(keysym)[0].to_sym, modifier] if modifier
         translate_key = keysym.to_s.downcase.to_sym
         translated_keysym = KEYSYM_TRANSLATIONS.key?(translate_key) ?
           KEYSYM_TRANSLATIONS[translate_key] :

lib/uh/wm/runner.rb

@@ -1,6 +1,8 @@
 module Uh
   module WM
     class Runner
+      include EnvLogging
+
       class << self
         def run env, **options
           runner = new env, **options
@@ -49,24 +51,17 @@ module Uh
 
       def connect_manager
         manager.connect
-        @env.keybinds.each do |keysym, _|
-          manager.grab_key *keysym
-        end
+        @env.keybinds.each { |keysym, _| manager.grab_key *keysym }
       end
 
       def worker
         @worker ||= Workers.build(*(@env.worker)).tap do |w|
-          w.on_read do
-            @env.log_debug 'Processing pending events'
-            @manager.handle_pending_events
-          end
-          w.on_read_next do
-            @env.log_debug 'Processing next event'
-            @manager.handle_next_event
-          end
+          w.before_watch  { @manager.handle_pending_events }
+          w.on_read       { @manager.handle_pending_events }
+          w.on_read_next  { @manager.handle_next_event }
           w.on_timeout do |*args|
-            @env.log_debug "Worker timeout: #{args.inspect}"
-            @env.log_debug 'Flushing X output buffer'
+            log_debug "Worker timeout: #{args.inspect}"
+            log_debug 'Flushing X output buffer'
             @manager.flush
           end
         end
@@ -74,12 +69,12 @@ module Uh
 
       def run_until &block
         worker.watch @manager
-        @env.log "Working events with `#{worker.class}'"
+        log "Working events with `#{worker.class}'"
         worker.work_events until block.call
       end
 
       def terminate
-        @env.log "Terminating..."
+        log "Terminating..."
         manager.disconnect
       end
 
@@ -92,24 +87,41 @@ module Uh
 
       def register_manager_hooks
         @events.on :connecting do |display|
-          @env.log_debug "Connecting to X server on `#{display}'"
+          log_debug "Connecting to X server on `#{display}'"
         end
         @events.on :connected do |display|
-          @env.log "Connected to X server on `#{display}'"
+          log "Connected to X server on `#{display}'"
         end
-        @events.on(:disconnected) { @env.log "Disconnected from X server" }
+        @events.on(:disconnected) { log "Disconnected from X server" }
         @events.on(:xevent) { |event| XEventLogger.new(env).log_event event }
+        @events.on(:xerror) { |*error| XEventLogger.new(env).log_xerror *error }
       end
 
       def register_layout_hooks
         @events.on :connected do |display|
-          @env.log "Registering layout `#{layout.class}'"
+          log "Registering layout `#{layout.class}'"
           layout.register display
         end
+        @events.on :configure do |window|
+          log "Configuring window: #{window}"
+          layout.suggest_geo
+        end
         @events.on :manage do |client|
-          @env.log "Manage client #{client}"
+          log "Managing client #{client}"
           layout << client
         end
+        @events.on :unmanage do |client|
+          log "Unmanaging client #{client}"
+          layout.remove client
+        end
+        @events.on :change do |client|
+          log "Updating client #{client}"
+          layout.update client
+        end
+        @events.on :expose do |window|
+          log "Exposing window: #{window}"
+          layout.expose window
+        end
       end
 
       def register_keybinds_hooks
@@ -120,6 +132,8 @@ module Uh
 
 
       class XEventLogger
+        include EnvLogging
+
         def initialize env
           @env = env
         end
@@ -132,13 +146,17 @@ module Uh
             "window: #{xev.window}"
           end
 
-          @env.log_debug [
+          log_debug [
             'XEvent',
             xev.type,
             xev.send_event ? 'SENT' : nil,
             complement
           ].compact.join ' '
         end
+
+        def log_xerror req, resource_id, msg
+          log_error "XERROR: #{resource_id} #{req} #{msg}"
+        end
       end
     end
   end

lib/uh/wm/testing/acceptance_helpers.rb

@@ -4,45 +4,67 @@ module Uh
   module WM
     module Testing
       module AcceptanceHelpers
+        TIMEOUT_DEFAULT = 2
+        QUIT_KEYBINDING = 'alt+shift+q'.freeze
+        LOG_READY       = 'Working events'.freeze
+
+        def icccm_window_start
+          @icccm_window = ChildProcess.build(*%w[xmessage window])
+          @icccm_window.start
+        end
+
+        def icccm_window_ensure_stop
+          @icccm_window.stop
+        end
+
+        def icccm_window_name
+          'xmessage'
+        end
+
         def uhwm_run options = '-v'
           command = %w[uhwm]
           command << options if options
           @interactive = @process = run command.join ' '
         end
 
+        def uhwm
+          @process
+        end
+
+        def uhwm_request_quit
+          x_key QUIT_KEYBINDING
+        end
+
         def uhwm_ensure_stop
           if @process
-            x_key 'alt+q'
+            x_key 'alt+shift+q'
             @process.terminate
           end
         end
 
-        def uhwm_pid
-          @process.pid
-        end
-
-        def uhwm_output
-          @process.stdout
-        end
-
-        def uhwm_wait_output message
+        def uhwm_wait_output message, times = 1, value = nil
           output = -> { @process.stdout + @process.stderr }
           timeout_until do
             case message
-              when Regexp then output.call =~ message
-              when String then assert_partial_output_interactive message
+            when Regexp then (value = output.call.scan(message)).size >= times
+            when String then output.call.include? message
             end
           end
+          value
         rescue TimeoutError => e
-          fail [
-            "expected `#{message}' not seen after #{e.timeout} seconds in:",
-            "  ```\n#{output.call.lines.map { |e| "  #{e}" }.join}  ```"
-          ].join "\n"
+          fail <<-eoh
+expected `#{message}' (#{times}) not seen after #{e.timeout} seconds in:
+  ```\n#{output.call.lines.map { |e| "  #{e}" }.join}  ```
+          eoh
+        end
+
+        def uhwm_wait_ready
+          uhwm_wait_output LOG_READY
         end
 
         def uhwm_run_wait_ready options = nil
           if options then uhwm_run options else uhwm_run end
-          uhwm_wait_output 'Connected to'
+          uhwm_wait_ready
         end
 
         def with_other_wm
@@ -56,42 +78,48 @@ module Uh
           @other_wm
         end
 
-        def x_client
-          @x_client ||= XClient.new
-        end
-
-        def x_key key
-          fail "cannot simulate X key `#{key}'" unless system "xdotool key #{key}"
-        end
-
-        def x_socket_check pid
-          case RbConfig::CONFIG['host_os']
-          when /linux/
-            `netstat -xp 2> /dev/null`.lines.grep /\s+#{pid}\/ruby/
-          else
-            `sockstat -u`.lines.grep /\s+ruby.+\s+#{pid}/
-          end.any?
-        end
-
-        def x_window_name
-          @x_client.window_name
-        end
-
-        def x_window_map
-          x_client.map.sync
+        def x_client ident = nil
+          ident             ||= :default
+          @x_clients        ||= {}
+          @x_clients[ident] ||= XClient.new(ident)
         end
 
         def x_clients_ensure_stop
-          @x_client and @x_client.terminate
+          @x_clients and @x_clients.any? and @x_clients.values.each &:terminate
+        end
+
+        def x_focused_window_id
+          Integer(`xdpyinfo`[/^focus:\s+window\s+(0x\h+)/, 1])
+        end
+
+        def x_input_event_masks
+          `xdpyinfo`[/current input event mask:\s+0x\h+([\w\s]+):/, 1]
+            .split(/\s+/)
+            .grep /Mask\z/
+        end
+
+        def x_key *k, delay: 12
+          k = k.join " key --delay #{delay} "
+          fail "cannot simulate X key `#{k}'" unless system "xdotool key #{k}"
+        end
+
+        def x_window_map_state window_selector
+          select_args = case window_selector
+            when Integer  then "-id #{window_selector}"
+            when String   then "-name #{window_selector}"
+            else fail ArgumentError,
+              "not an Integer nor a String: `#{window_selector.inspect}'"
+          end
+          `xwininfo #{select_args} 2> /dev/null`[/Map State: (\w+)/, 1]
         end
 
 
         private
 
-        def timeout_until
+        def timeout_until message = 'condition not met after %d seconds'
           timeout = ENV.key?('UHWMTEST_TIMEOUT') ?
             ENV['UHWMTEST_TIMEOUT'].to_i :
-            1
+            TIMEOUT_DEFAULT
           Timeout.timeout(timeout) do
             loop do
               break if yield
@@ -99,7 +127,7 @@ module Uh
             end
           end
         rescue Timeout::Error
-          fail TimeoutError.new('execution expired', timeout)
+          fail TimeoutError.new(message % timeout, timeout)
         end
 
 
@@ -115,8 +143,8 @@ module Uh
         class XClient
           attr_reader :name
 
-          def initialize
-            @name     = "#{self.class.name.split('::').last}/#{object_id}"
+          def initialize name = object_id
+            @name     = "#{self.class.name.split('::').last}/#{name}"
             @geo      = Geo.new(0, 0, 640, 480)
             @display  = Display.new.tap { |o| o.open }
           end
@@ -130,19 +158,37 @@ module Uh
           end
 
           def window
-            @window ||= @display.create_window(@geo).tap do |o|
-              o.name = @name
-            end
+            @window ||= @display.create_window(@geo).tap { |o| o.name = @name }
+          end
+
+          def window_id
+            @window.id
           end
 
           def window_name
             @name
           end
 
-          def map
+          def window_name= name
+            @name = @window.name = name
+            window.name
+          end
+
+          def map times: 1
+            times.times { window.map }
             window.map
             self
           end
+
+          def unmap
+            window.unmap
+            self
+          end
+
+          def destroy
+            window.destroy
+            self
+          end
         end
       end
     end

lib/uh/wm/version.rb

@@ -1,5 +1,5 @@
 module Uh
   module WM
-    VERSION = '0.0.1'
+    VERSION = '0.0.6'
   end
 end

lib/uh/wm/workers/base.rb

@@ -2,7 +2,7 @@ module Uh
   module WM
     module Workers
       class Base
-        CALLBACKS = %w[before_wait on_timeout on_read on_read_next].freeze
+        CALLBACKS = %w[before_watch on_timeout on_read on_read_next].freeze
 
         def initialize **options
           @ios = []

lib/uh/wm/workers/mux.rb

@@ -2,13 +2,15 @@ module Uh
   module WM
     module Workers
       class Mux < Base
-        def initialize timeout: 1
+        TIMEOUT_DEFAULT = 1
+
+        def initialize timeout: TIMEOUT_DEFAULT
           super
           @timeout = timeout
         end
 
         def work_events
-          @before_wait.call if @before_wait
+          @before_watch.call if @before_watch
           if res = select(@ios, [], [], @timeout) then @on_read.call res
           else @on_timeout.call if @on_timeout end
         end

spec/spec_helper.rb

@@ -2,7 +2,11 @@ require 'headless'
 
 require 'uh/wm'
 
+Dir['spec/support/**/*.rb'].map { |e| require e.gsub 'spec/', '' }
+
 RSpec.configure do |config|
+  config.include Factories
+
   config.expect_with :rspec do |expectations|
     expectations.include_chain_clauses_in_custom_matcher_descriptions = true
   end

spec/support/factories.rb

@@ -0,0 +1,28 @@
+module Factories
+  def build_geo x = 0, y = 0, width = 640, height = 480
+    Uh::Geo.new(x, y, width, height)
+  end
+
+  def build_client window = mock_window
+    Uh::WM::Client.new(window)
+  end
+
+  def mock_event type = :xany, **options
+    double 'event', type: type, **options
+  end
+
+  def mock_event_key_press key, modifier_mask
+    mock_event :key_press,
+      key:            'f',
+      modifier_mask:  modifier_mask
+  end
+
+  def mock_window override_redirect: false, icccm_wm_protocols: []
+    instance_spy Uh::Window, 'window',
+      to_s:               'wid',
+      name:               'wname',
+      wclass:             'wclass',
+      override_redirect?: override_redirect,
+      icccm_wm_protocols: icccm_wm_protocols
+  end
+end

spec/uh/wm/actions_handler_spec.rb

@@ -6,10 +6,15 @@ module Uh
       subject(:actions) { described_class.new env, events }
 
       describe '#evaluate' do
-        it 'evaluates given code' do
+        it 'evaluates code given as Proc argument' do
           expect { actions.evaluate proc { throw :action_code } }
             .to throw_symbol :action_code
         end
+
+        it 'evaluates code given as block' do
+          expect { actions.evaluate { throw :action_code } }
+            .to throw_symbol :action_code
+        end
       end
 
       describe '#quit' do
@@ -18,6 +23,35 @@ module Uh
           actions.quit
         end
       end
+
+      describe '#kill_current' do
+        let(:client) { instance_spy Client }
+
+        context 'when layout has a client' do
+          before do
+            allow(actions.layout).to receive(:current_client) { client }
+          end
+
+          it 'kills layout current client' do
+            expect(client).to receive :kill
+            actions.kill_current
+          end
+        end
+      end
+
+      describe '#log_separator' do
+        it 'logs a separator' do
+          expect(env).to receive(:log).with /(?:- ){20,}/
+          actions.log_separator
+        end
+      end
+
+      describe '#layout_*' do
+        it 'delegates messages to the layout with handle_ prefix' do
+          expect(env.layout).to receive :handle_screen_sel
+          actions.layout_screen_sel :succ
+        end
+      end
     end
   end
 end

spec/uh/wm/client_spec.rb

@@ -1,11 +1,9 @@
 module Uh
   module WM
     RSpec.describe Client do
-      let(:geo)         { Geo.new(0, 0, 640, 480) }
-      let(:window) do
-        instance_spy Window, 'window', to_s: 'wid',
-          name: 'wname', wclass: 'wclass'
-      end
+      let(:protocols)   { [] }
+      let(:window)      { mock_window icccm_wm_protocols: protocols }
+      let(:geo)         { build_geo }
       subject(:client)  { described_class.new window, geo }
 
       it 'is not visible' do
@@ -33,7 +31,7 @@ module Uh
           expect(client.to_s).to include geo.to_s
         end
 
-        it 'includes window id' do
+        it 'includes window string representation' do
           expect(client.to_s).to include 'wid'
         end
       end
@@ -50,6 +48,35 @@ module Uh
         end
       end
 
+      describe '#update_window_properties' do
+        it 'updates the cached window name' do
+          client.name
+          allow(window).to receive(:name) { 'new name' }
+          expect { client.update_window_properties }
+            .to change { client.name }
+            .from('wname').to 'new name'
+        end
+
+        it 'updates the cached window class' do
+          client.wclass
+          allow(window).to receive(:wclass) { 'new class' }
+          expect { client.update_window_properties }
+            .to change { client.wclass }
+            .from('wclass').to 'new class'
+        end
+      end
+
+      describe '#configure' do
+        it 'configures the window with client geo' do
+          expect(window).to receive(:configure).with geo
+          client.configure
+        end
+
+        it 'returns self' do
+          expect(client.configure).to be client
+        end
+      end
+
       describe '#moveresize' do
         it 'moveresizes the window with client geo' do
           expect(window).to receive(:moveresize).with geo
@@ -117,6 +144,37 @@ module Uh
           expect(client.focus).to be client
         end
       end
+
+      describe '#kill' do
+        it 'kills the window' do
+          expect(window).to receive :kill
+          client.kill
+        end
+
+        it 'returns self' do
+          expect(client.kill).to be client
+        end
+
+        context 'when window supports icccm wm delete' do
+          let(:protocols) { [:WM_DELETE_WINDOW] }
+
+          it 'icccm deletes the window' do
+            expect(window).to receive :icccm_wm_delete
+            client.kill
+          end
+        end
+      end
+
+      describe '#kill!' do
+        it 'kills the window' do
+          expect(window).to receive :kill
+          client.kill!
+        end
+
+        it 'returns self' do
+          expect(client.kill!).to be client
+        end
+      end
     end
   end
 end

spec/uh/wm/dispatcher_spec.rb

@@ -1,7 +1,7 @@
 module Uh
   module WM
     RSpec.describe Dispatcher do
-      subject(:dispatcher)  { described_class.new }
+      subject(:dispatcher) { described_class.new }
 
       describe '#[]' do
         context 'when given key for existing hook' do
@@ -45,6 +45,11 @@ module Uh
           expect { dispatcher.emit :hook_key }.to throw_symbol :hook_code
         end
 
+        it 'returns the value returned by a registered hook' do
+          dispatcher.on(:hook_key) { :hook_code }
+          expect(dispatcher.emit :hook_key).to eq :hook_code
+        end
+
         context 'when no hooks are registered for given key' do
           it 'does not call another hook' do
             dispatcher.on(:hook_key) { throw :hook_code }

spec/uh/wm/env_spec.rb

@@ -25,8 +25,8 @@ module Uh
         expect(env.modifier).to eq :mod1
       end
 
-      it 'has defaults key bindings set' do
-        expect(env.keybinds.keys).to eq %i[q]
+      it 'has default key binding for quit set' do
+        expect(env.keybinds.keys).to include [:q, :shift]
       end
 
       it 'has the blocking worker by default' do
@@ -70,19 +70,27 @@ module Uh
       end
 
       describe '#layout' do
-        context 'when a layout class is set' do
-          let(:some_layout) { Class.new }
+        let(:some_layout_class) { Class.new }
 
-          before { env.layout_class = some_layout }
+        it 'returns the default layout' do
+          expect(env.layout).to be_an_instance_of ::Uh::Layout
+        end
 
-          it 'returns a new instance of this layout class' do
-            expect(env.layout).to be_an_instance_of some_layout
+        context 'when a layout is set' do
+          let(:some_layout) { some_layout_class.new }
+
+          before { env.layout = some_layout }
+
+          it 'returns the assigned layout' do
+            expect(env.layout).to be some_layout
           end
         end
 
-        context 'when a layout class is not set' do
-          it 'returns an instance of the default layout' do
-            expect(env.layout).to be_an_instance_of ::Uh::Layout
+        context 'when a layout class is set' do
+          before { env.layout_class = some_layout_class }
+
+          it 'returns a new instance of this layout class' do
+            expect(env.layout).to be_an_instance_of some_layout_class
           end
         end
       end
@@ -129,7 +137,8 @@ module Uh
 
       describe '#log_logger_level' do
         it 'logs the logger level' do
-          expect(env.logger).to receive(:info).with /log.+(warn|info|debug).+level/i
+          expect(env.logger)
+            .to receive(:info).with /log.+(warn|info|debug).+level/i
           env.log_logger_level
         end
       end

spec/uh/wm/manager_spec.rb

@@ -2,15 +2,13 @@ module Uh
   module WM
     RSpec.describe Manager do
       let(:block)       { proc { } }
+      let(:window)      { mock_window }
+      let(:client)      { build_client window }
       let(:events)      { Dispatcher.new }
       let(:modifier)    { :mod1 }
       let(:display)     { Display.new }
       subject(:manager) { described_class.new events, modifier, display }
 
-      it 'has a new display' do
-        expect(manager.display).to be_a Display
-      end
-
       it 'has no clients' do
         expect(manager.clients).to be_empty
       end
@@ -106,6 +104,174 @@ module Uh
         end
       end
 
+      describe '#configure' do
+        context 'with new window' do
+          it 'sends a configure event to the window with a default geo' do
+            expect(window)
+              .to receive(:configure_event).with(build_geo 0, 0, 320, 240)
+            manager.configure window
+          end
+
+          context 'when :configure event returns a geo' do
+            it 'sends a configure event with geo returned by event' do
+              geo = build_geo 0, 0, 42, 42
+              events.on(:configure) { geo }
+              expect(window).to receive(:configure_event).with geo
+              manager.configure window
+            end
+          end
+        end
+
+        context 'with known window' do
+          before { manager.clients << client }
+
+          it 'tells the client to configure' do
+            expect(client).to receive :configure
+            manager.configure window
+          end
+        end
+      end
+
+      describe '#map' do
+        let(:display) { instance_spy Display }
+
+        it 'registers a new client wrapping the given window' do
+          manager.map window
+          expect(manager.clients[0])
+            .to be_a(Client)
+            .and have_attributes(window: window)
+        end
+
+        it 'registers new client only once for a given window' do
+          manager.map window
+          expect { manager.map window }.not_to change { manager.clients }
+        end
+
+        it 'ignores event when window has override redirect' do
+          allow(window).to receive(:override_redirect?) { true }
+          expect { manager.map window }.not_to change { manager.clients }
+        end
+
+        it 'emits :manage event with the registered client' do
+          events.on :manage, &block
+          expect(block).to receive :call do |client|
+            expect(client)
+              .to be_a(Client)
+              .and have_attributes(window: window)
+          end
+          manager.map window
+        end
+
+        it 'listens for property notify events on given window' do
+          expect(display)
+            .to receive(:listen_events)
+            .with window, Events::PROPERTY_CHANGE_MASK
+          manager.map window
+        end
+      end
+
+      describe '#unmap' do
+        before { manager.clients << client }
+
+        context 'when client unmap count is 0 or less' do
+          it 'preserves the client unmap count' do
+            expect { manager.unmap window }.not_to change { client.unmap_count }
+          end
+
+          it 'unregisters the client' do
+            manager.unmap window
+            expect(manager.clients).not_to include client
+          end
+
+          it 'emits :unmanage event with the client' do
+            events.on :unmanage, &block
+            expect(block).to receive(:call).with client
+            manager.unmap window
+          end
+        end
+
+        context 'when client unmap count is strictly positive' do
+          before { client.unmap_count += 1 }
+
+          it 'does not unregister the client' do
+            manager.unmap window
+            expect(manager.clients).to include client
+          end
+
+          it 'decrements the unmap count' do
+            manager.unmap window
+            expect(client.unmap_count).to eq 0
+          end
+        end
+
+        context 'with unknown window' do
+          let(:unknown_window) { window.dup }
+
+          it 'does not change registered clients' do
+            expect { manager.unmap unknown_window }
+              .not_to change { manager.clients }
+          end
+
+          it 'does not emit any event' do
+            expect(events).not_to receive :emit
+            manager.unmap unknown_window
+          end
+        end
+      end
+
+      describe '#destroy' do
+        before { manager.clients << client }
+
+        it 'unregisters the client' do
+          manager.destroy window
+          expect(manager.clients).not_to include client
+        end
+
+        it 'emits :unmanage event with the client' do
+          events.on :unmanage, &block
+          expect(block).to receive(:call).with client
+          manager.destroy window
+        end
+
+        context 'with unknown window' do
+          let(:unknown_window) { window.dup }
+
+          it 'does not change registered clients' do
+            expect { manager.destroy unknown_window }
+              .not_to change { manager.clients }
+          end
+
+          it 'does not emit any event' do
+            expect(events).not_to receive :emit
+            manager.destroy unknown_window
+          end
+        end
+      end
+
+      describe '#update_properties' do
+        context 'with known window' do
+          before { manager.clients << client }
+
+          it 'tells the client to update its window properties' do
+            expect(client).to receive :update_window_properties
+            manager.update_properties window
+          end
+
+          it 'emits :change event with the client' do
+            events.on :change, &block
+            expect(block).to receive(:call).with client
+            manager.update_properties window
+          end
+        end
+
+        context 'with unknown window' do
+          it 'does not emit any event' do
+            expect(events).not_to receive :emit
+            manager.update_properties window
+          end
+        end
+      end
+
       describe '#handle_next_event' do
         it 'handles the next available event on display' do
           event = double 'event'
@@ -116,7 +282,7 @@ module Uh
       end
 
       describe '#handle_pending_events' do
-        let(:event) { double 'event' }
+        let(:event) { mock_event }
 
         context 'when an event is pending on display' do
           before do
@@ -144,7 +310,7 @@ module Uh
       end
 
       describe '#handle' do
-        let(:event) { double 'event', type: :any }
+        let(:event) { mock_event }
 
         it 'emits :xevent event with the X event' do
           events.on :xevent, &block
@@ -152,13 +318,8 @@ module Uh
         end
 
         context 'when key_press event is given' do
-          let(:mod_mask) { KEY_MODIFIERS[modifier] }
-          let(:event) do
-            double 'event',
-              type:           :key_press,
-              key:            'f',
-              modifier_mask:  mod_mask
-          end
+          let(:mod_mask)  { KEY_MODIFIERS[modifier] }
+          let(:event)     { mock_event_key_press 'f', mod_mask }
 
           it 'emits :key event with the corresponding key' do
             events.on(:key, :f) { throw :key_press_code }
@@ -175,23 +336,47 @@ module Uh
           end
         end
 
-        context 'when map_request event is given' do
-          let(:event) { double 'event', type: :map_request, window: :window }
+        context 'when configure request event is given' do
+          let(:event) { mock_event :configure_request, window: :window }
 
-          it 'registers a new client wrapping the event window' do
+          it 'configures the event window' do
+            expect(manager).to receive(:configure).with :window
             manager.handle event
-            expect(manager.clients[0])
-              .to be_a(Client)
-              .and have_attributes(window: :window)
           end
+        end
 
-          it 'emits :manage event with the registered client' do
-            events.on :manage, &block
-            expect(block).to receive :call do |client|
-              expect(client)
-                .to be_a(Client)
-                .and have_attributes(window: :window)
-            end
+        context 'when destroy_notify event is given' do
+          let(:event) { mock_event :destroy_notify, window: :window }
+
+          it 'destroy the event window' do
+            expect(manager).to receive(:destroy).with :window
+            manager.handle event
+          end
+        end
+
+        context 'when map_request event is given' do
+          let(:event) { mock_event :map_request, window: :window }
+
+          it 'maps the event window' do
+            expect(manager).to receive(:map).with :window
+            manager.handle event
+          end
+        end
+
+        context 'when unmap_notify event is given' do
+          let(:event) { mock_event :unmap_notify, window: :window }
+
+          it 'unmaps the event window' do
+            expect(manager).to receive(:unmap).with :window
+            manager.handle event
+          end
+        end
+
+        context 'when property_notify event is given' do
+          let(:event) { mock_event :property_notify, window: :window }
+
+          it 'updates event window properties' do
+            expect(manager).to receive(:update_properties).with :window
             manager.handle event
           end
         end

spec/uh/wm/run_control_spec.rb

@@ -5,7 +5,6 @@ module Uh
     RSpec.describe RunControl do
       include FileSystemHelpers
 
-      let(:code)    { :run_control_code }
       let(:env)     { Env.new(StringIO.new) }
       subject(:rc)  { described_class.new env }
 
@@ -28,14 +27,6 @@ module Uh
           allow(described_class).to receive(:new) { rc }
           described_class.evaluate env
         end
-
-        context 'when run control file is not present' do
-          before { env.rc_path = 'non_existent_rc_file.rb' }
-
-          it 'does not raise any error' do
-            expect { described_class.evaluate env }.not_to raise_error
-          end
-        end
       end
 
       describe '#evaluate' do
@@ -65,6 +56,11 @@ module Uh
           expect(env.keybinds.keys).to include :f
         end
 
+        it 'registers a combined keys binding in the env' do
+          rc.key :f, :shift, &code
+          expect(env.keybinds.keys).to include %i[f shift]
+        end
+
         it 'registers given block with the key binding' do
           rc.key :f, &code
           expect(env.keybinds[:f].call).to eq :keybind_code
@@ -81,6 +77,31 @@ module Uh
         end
       end
 
+      describe '#layout' do
+        context 'when given a class' do
+          let(:layout_class) { Class.new }
+
+          it 'sets a layout class in the env' do
+            rc.layout layout_class
+            expect(env.layout_class).to be layout_class
+          end
+
+          context 'when given options' do
+            it 'instantiates the class with given options' do
+              expect(layout_class).to receive(:new).with(foo: :bar)
+              rc.layout layout_class, foo: :bar
+            end
+          end
+        end
+
+        context 'when given an object' do
+          it 'sets a layout instance in the env' do
+            rc.layout layout = Object.new
+            expect(env.layout).to eq layout
+          end
+        end
+      end
+
       describe '#worker' do
         it 'sets the worker type in the env' do
           rc.worker :some_worker

spec/uh/wm/runner_spec.rb

@@ -1,6 +1,11 @@
 SomeLayout = Class.new do
-  define_method(:register)  { |*args| }
-  define_method(:<<)        { |*args| }
+  include Factories
+
+  define_method(:register)    { |*_| }
+  define_method(:suggest_geo) { build_geo 0, 0, 42, 42 }
+  define_method(:<<)          { |*_| }
+  define_method(:remove)      { |*_| }
+  define_method(:update)      { |*_| }
 end
 
 module Uh
@@ -14,10 +19,6 @@ module Uh
         env.rc_path       = 'non_existent_run_control.rb'
       end
 
-      it 'has the env' do
-        expect(runner.env).to be env
-      end
-
       it 'has a dispatcher' do
         expect(runner.events).to be_a Dispatcher
       end
@@ -70,39 +71,61 @@ module Uh
       describe '#register_event_hooks' do
         it 'registers quit event hook' do
           runner.register_event_hooks
-          expect(runner).to receive(:stop!)
+          expect(runner).to receive :stop!
           runner.events.emit :quit
         end
 
-        it 'registers layout hook for :connected event' do
-          runner.register_event_hooks
-          expect(env.layout).to receive(:register).with :display
-          runner.events.emit :connected, args: :display
+        context 'layout hooks' do
+          it 'registers for :connected event' do
+            runner.register_event_hooks
+            expect(env.layout).to receive(:register).with :display
+            runner.events.emit :connected, args: :display
+          end
+
+          it 'registers for :configure event' do
+            runner.register_event_hooks
+            expect(runner.events.emit :configure, args: :window)
+              .to eq build_geo 0, 0, 42, 42
+          end
+
+          it 'registers for :manage event' do
+            runner.register_event_hooks
+            expect(env.layout).to receive(:<<).with :client
+            runner.events.emit :manage, args: :client
+          end
+
+          it 'registers for :unmanage event' do
+            runner.register_event_hooks
+            expect(env.layout).to receive(:remove).with :client
+            runner.events.emit :unmanage, args: :client
+          end
+
+          it 'registers for :change event' do
+            runner.register_event_hooks
+            expect(env.layout).to receive(:update).with :client
+            runner.events.emit :change, args: :client
+          end
         end
 
-        it 'registers layout hook for :manage event' do
-          runner.register_event_hooks
-          expect(env.layout).to receive(:<<).with :window
-          runner.events.emit :manage, args: :window
-        end
+        context 'keys hooks' do
+          it 'registers for :key' do
+            env.keybinds[:f] = -> { }
+            runner.register_event_hooks
+            expect(runner.events[:key, :f]).not_to be_empty
+          end
 
-        it 'registers key bindings event hooks' do
-          env.keybinds[:f] = -> { }
-          runner.register_event_hooks
-          expect(runner.events[:key, :f]).not_to be_empty
-        end
+          it 'registers for :key with combined key bindings' do
+            env.keybinds[[:f, :shift]] = -> { }
+            runner.register_event_hooks
+            expect(runner.events[:key, :f, :shift]).not_to be_empty
+          end
 
-        it 'registers combined key bindings event hooks' do
-          env.keybinds[[:f, :shift]] = -> { }
-          runner.register_event_hooks
-          expect(runner.events[:key, :f, :shift]).not_to be_empty
-        end
-
-        it 'registers key bindings code evaluation with the actions handler' do
-          env.keybinds[:f] = code = proc { }
-          runner.register_event_hooks
-          expect(runner.actions).to receive(:evaluate).with code
-          runner.events.emit :key, :f
+          it 'registers code evaluation with the actions handler' do
+            env.keybinds[:f] = code = proc { }
+            runner.register_event_hooks
+            expect(runner.actions).to receive(:evaluate).with code
+            runner.events.emit :key, :f
+          end
         end
       end
 
@@ -127,17 +150,22 @@ module Uh
           expect(runner.worker).to respond_to :work_events
         end
 
-        it 'setups the read callback to tell manager to handle pending events' do
+        it 'setups the before_watch callback' do
+          expect(runner.manager).to receive :handle_pending_events
+          runner.worker.before_watch.call
+        end
+
+        it 'setups the read callback' do
           expect(runner.manager).to receive :handle_pending_events
           runner.worker.on_read.call
         end
 
-        it 'setups the read_next callback to tell manager to handle next event' do
+        it 'setups the read_next callback' do
           expect(runner.manager).to receive :handle_next_event
           runner.worker.on_read_next.call
         end
 
-        it 'setups the timeout callback to tell manager to flush the output' do
+        it 'setups the timeout callback' do
           expect(runner.manager).to receive :flush
           runner.worker.on_timeout.call
         end

uh-wm.gemspec

@@ -3,8 +3,9 @@ require File.expand_path('../lib/uh/wm/version', __FILE__)
 Gem::Specification.new do |s|
   s.name    = 'uh-wm'
   s.version = Uh::WM::VERSION.dup
-  s.summary = 'uh window manager'
+  s.summary = 'minimalistic tiling and stacking window manager for X'
   s.description = s.name
+  s.license = 'BSD-3-Clause'
   s.homepage = 'https://rubygems.org/gems/uh-wm'
 
   s.authors = 'Thibault Jouan'
@@ -14,8 +15,8 @@ Gem::Specification.new do |s|
   s.test_files  = s.files.grep /\A(spec|features)\//
   s.executables = s.files.grep(/\Abin\//) { |f| File.basename(f) }
 
-  s.add_dependency 'uh',        '2.0.0.pre1'
-  s.add_dependency 'uh-layout', '0.2.0.pre'
+  s.add_dependency 'uh',        '2.0.0'
+  s.add_dependency 'uh-layout', '~> 0.4.0'
 
   s.add_development_dependency 'aruba',     '~> 0.6'
   s.add_development_dependency 'cucumber',  '~> 2.0'