Add GNOME support

Add ability to install the GNOME desktop environment.
Most common global settings (date and time, power management, touchpad settings, theme) can be configured via Ansible variables.
See "group_vars/all" file.

group_vars/all

@@ -220,6 +220,41 @@ gdm:
         tap_to_click: True
     accessibility_menu: True
 
+desktop_environment: i3
+gnome:
+    night_light:
+        enabled: True
+        color_temperature: 4000 # in Kelvin
+    date_time:
+        show_date_in_clock: True
+        show_weeks_in_calendar: True
+    battery:
+        show_percentage: True
+    power:
+        sleep_timeout_when_computer_on_ac: 3600 # in seconds
+        timeout_action_when_computer_on_ac: suspend
+        sleep_timeout_when_computer_on_battery: 1800 # in seconds
+        timeout_action_when_computer_on_battery: suspend
+        power_button_action: suspend
+    touchpad:
+        tap_to_click: True
+        natural_scrolling: True
+        disabled_while_typing: True
+    online_accounts_support: True
+    lock_screen:
+        automatic_lock: True
+        lock_screen_after_blank_for: 0 # in seconds
+        show_notifications: True
+        show_full_name_of_user: True
+    theme:
+        theme_name: Adwaita
+        icon_theme_name: Adwaita
+        font_name: Dejavu Sans 13
+        dark_variant: True
+    gnome_shell:
+        disable_top_left_hot_corner: False
+        extensions_support: True
+
 base_fonts:
     - terminus-font
     - cantarell-fonts

playbook.yml

@@ -14,7 +14,8 @@
     - { role: x, tags: ['x'] }
     - { role: lightdm, tags: ['lightdm'], when: "display_manager == 'lightdm'" }
     - { role: gdm, tags: ['gdm'], when: "display_manager == 'gdm'" }
-    - { role: i3, tags: ['i3'] }
+    - { role: i3, tags: ['i3'], when: "desktop_environment == 'i3'" }
+    - { role: gnome, tags: ['gnome'], when: "desktop_environment == 'gnome'" }
     - { role: pass, tags: ['pass'] }
     - { role: iptables, tags: ['iptables'] }
     - { role: nettools, tags: ['nettools'] }

roles/gnome/meta/main.yml

@@ -0,0 +1,5 @@
+---
+dependencies:
+  - { role: x }
+  - { role: gdm }
+  - { role: networkmanager }

roles/gnome/tasks/dconf.yml

@@ -0,0 +1,13 @@
+---
+- name: Creating gnome.d directory for DConf
+  file: path=/etc/dconf/db/gnome.d state=directory mode=0755
+
+- name: Configuring GNOME
+  template: src=gnome.d/00-spark.j2 dest=/etc/dconf/db/gnome.d/00-spark mode=0644
+  notify: update DConf database
+
+- name: Configuring DConf
+  lineinfile: path=/etc/dconf/profile/user line={{ item }} create=yes mode=0644
+  with_items:
+    - "user-db:user"
+    - "system-db:gnome"

roles/gnome/tasks/gnome_shell.yml

@@ -0,0 +1,14 @@
+---
+- name: Disabling GNOME Shell top left hot corner
+  aur: name=gnome-shell-extension-no-topleft-hot-corner user={{ user.name }}
+  when: "gnome.gnome_shell.disable_top_left_hot_corner"
+
+- name: Enabling GNOME Shell top left hot corner
+  pacman: name=gnome-shell-extension-no-topleft-hot-corner state=absent
+  when: "not gnome.gnome_shell.disable_top_left_hot_corner"
+
+- name: Configuring GNOME Shell Extensions support
+  pacman: name={{ item }} state={{ "present" if gnome.gnome_shell.extensions_support else "absent" }}
+  with_items:
+    - gnome-shell-extensions
+    - chrome-gnome-shell

roles/gnome/tasks/gtk.yml

@@ -0,0 +1,6 @@
+---
+- name: Creating GTK+ 3 system wide settings
+  file: path=/etc/gtk-3.0 state=directory mode=0755
+
+- name: Configuring GTK+ 3 theme
+  template: src=gtk-3.0/settings.ini.j2 dest=/etc/gtk-3.0/settings.ini mode=0644

roles/gnome/tasks/main.yml

@@ -0,0 +1,13 @@
+---
+- name: Install GNOME
+  pacman: name={{ item }} state=present
+  with_items:
+    - gnome
+    - gnome-extra
+    - gnome-tweaks
+    - xorg-server-xwayland
+
+- include: dconf.yml
+- include: gtk.yml
+- include: gnome_shell.yml
+- include: online_accounts.yml

roles/gnome/tasks/online_accounts.yml

@@ -0,0 +1,3 @@
+---
+- name: Configuring GNOME Online Accounts integration
+  pacman: name=gvfs-goa state={{ "present" if gnome.online_accounts_support else "absent" }}

roles/gnome/templates/gnome.d/00-spark.j2

@@ -0,0 +1,37 @@
+# This configuration file is created by Ansible. Manual changes would get lost.
+
+# Night Light settings
+[org/gnome/settings-daemon/plugins/color]
+night-light-enabled={{ gnome.night_light.enabled | ternary('true', 'false') }}
+night-light-temperature={{ gnome.night_light.color_temperature | default(4000) }}
+
+[org/gnome/desktop/calendar]
+show-weekdate={{ gnome.date_time.show_weeks_in_calendar | ternary('true', 'false') }}
+
+[org/gnome/desktop/interface]
+# Date and time settings
+clock-show-date={{ gnome.date_time.show_date_in_clock | ternary('true', 'false') }}
+
+# Battery settings
+show-battery-percentage={{ gnome.battery.show_percentage | ternary('true', 'false') }}
+
+# Touchpad settings
+[org/gnome/desktop/peripherals/touchpad]
+tap-to-click={{ gnome.touchpad.tap_to_click | ternary('true', 'false') }}
+natural-scroll={{ gnome.touchpad.natural_scrolling | ternary('true', 'false') }}
+disable-while-typing={{ gnome.touchpad.disabled_while_typing | ternary('true', 'false') }}
+
+# Power settings
+[org/gnome/settings-daemon/plugins/power]
+sleep-inactive-ac-timeout={{ gnome.power.sleep_timeout_when_computer_on_ac | default(3600) }}
+sleep-inactive-ac-type='{{ gnome.power.timeout_action_when_computer_on_ac | default("hibernate") }}'
+sleep-inactive-battery-timeout={{ gnome.power.sleep_timeout_when_computer_on_battery | default(3600) }}
+sleep-inactive-battery-type='{{ gnome.power.timeout_action_when_computer_on_battery | default("hibernate") }}'
+power-button-action='{{ gnome.power.power_button_action | default("suspend") }}'
+
+# Lock screen settings
+[org/gnome/desktop/screensaver]
+lock-enabled={{ gnome.lock_screen.automatic_lock | ternary('true', 'false') }}
+lock-delay={{ gnome.lock_screen.lock_screen_after_blank_for | default(0) }}
+status-message-enabled={{ gnome.lock_screen.show_notifications | ternary('true', 'false') }}
+show-full-name-in-top-bar={{ gnome.lock_screen.show_full_name_of_user | ternary('true', 'false') }}

roles/gnome/templates/gtk-3.0/settings.ini.j2

@@ -0,0 +1,11 @@
+[Settings]
+{% if gnome.theme.theme_name %}
+gtk-icon-theme-name = {{ gnome.theme.theme_name }}
+{% endif %}
+{% if gnome.theme.icon_theme_name %}
+gtk-theme-name = {{ gnome.theme.icon_theme_name }}
+{% endif %}
+{% if gnome.theme.font_name %}
+gtk-font-name = {{ gnome.theme.font_name }}
+{% endif %}
+gtk-application-prefer-dark-theme = {% if gnome.theme.dark_variant %}true{% else %}false{% endif %}