tdf#160349: add .uno:ChangeTheme to notebookbar to toggle dark mode

A temporary (ugly, but appropriate) icon has been assigned.

The toggle can be customize-assigned to keyboard, menu, and toolbar,
and can be found by searching for "Dark Mode".

In the menu, it is checked when in Dark mode,
and in the toolbar it is "depressed" or highlighted as active.

Dark mode has been added to the view tab of notebookbar.ui.
I added it as NOT VISIBLE, for several reasons.
- dark mode is rather new and not so stable, so don't over-promote it.
- notebookbars cannot be infinitely customized by the end user,
  so developers have to add all items. Users only enable or disable.
- toggling dark mode really ought to be done at the OS level,
  and typically should be a one-time setting,
  therefore not appropriate to waste precious toolbar space.

The primary benefit of making it available in the menu
is for QA testers who want to easily switch back and forth.
WARNING: by customizing the notebookbar, you prevent seeing
any future NBB changes made to the program
(until you reset to defaults or blow away the user profile).

Dark Mode can easily be added to a menu, toolbar or keyboard shortcut
by the end user, so I didn't bother adding it anywhere else.

To avoid completely cluttering up this commit,
I only added Dark mode to the main notebookbar.
Once this commit has been finalized,
the other writer-apps and notebookbars can
also gain this command.

Change-Id: Ia7594ad81e305ead922abd0ad7b41d6fc0413053
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166781
Reviewed-by: Heiko Tietze <heiko.tietze@documentfoundation.org>
Tested-by: Jenkins
Reviewed-by: Justin Luth <jluth@mail.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu b/officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu
index c8ba600372b4..7880deebb46c 100644
--- a/officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu
+++ b/officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu
@@ -1404,6 +1404,17 @@ bit 3 (0x8): #define UICOMMANDDESCRIPTION_PROPERTIES_TOGGLEBUTTON 8
           <value xml:lang="en-US">Undo</value>
         </prop>
       </node>
+      <node oor:name=".uno:ChangeTheme" oor:op="replace">
+        <prop oor:name="Label" oor:type="xs:string">
+          <value xml:lang="en-US">Dark Mode</value>
+        </prop>
+        <prop oor:name="TooltipLabel" oor:type="xs:string">
+          <value xml:lang="en-US">Toggle between dark and light modes</value>
+        </prop>
+        <prop oor:name="Properties" oor:type="xs:int">
+          <value>1</value>
+        </prop>
+      </node>
       <node oor:name=".uno:ToggleControlFocus" oor:op="replace">
         <prop oor:name="Label" oor:type="xs:string">
           <value xml:lang="en-US">Control Focus</value>