xwayland: add core option for XWayland startup script (#2672)

Fixes #2670

Author: ammen99

.gitignore

@@ -65,3 +65,4 @@ build/**
 .cache/**
 
 # End of https://www.toptal.com/developers/gitignore/api/c++,meson,ninja,linux
+.aider*

metadata/core.xml

@@ -62,6 +62,11 @@
 				<_name>Start when client connects</_name>
 			</desc>
 		</option>
+		<option name="xwayland_startup_script" type="string">
+			<_short>XWayland startup script</_short>
+			<_long>A script to execute when the XWayland server starts. This script is executed in a POSIX shell (/bin/sh).</_long>
+			<default></default>
+		</option>
 		<option name="max_render_time" type="int">
 			<_short>Maximum render time</_short>
 			<_long>Sets the compositor render delay in milliseconds, which allows applications to render with low latency.</_long>

src/view/xwayland.cpp

@@ -5,6 +5,7 @@
 #include "../core/seat/cursor.hpp"
 #include <wayfire/view.hpp>
 #include <wayfire/nonstd/tracking-allocator.hpp>
+#include <wayfire/option-wrapper.hpp>
 
 #include "wayfire/unstable/wlr-view-events.hpp"
 #include "wayfire/util.hpp"
@@ -243,6 +244,14 @@ void wf::init_xwayland(bool lazy)
 
         wlr_xwayland_set_seat(xwayland_handle, wf::get_core().get_current_seat());
         xwayland_update_default_cursor();
+
+        static wf::option_wrapper_t<std::string> xwayland_startup_script{"core/xwayland_startup_script"};
+        auto script = xwayland_startup_script.value();
+        if (!script.empty())
+        {
+            LOGD("Executing XWayland startup script: ", script);
+            wf::get_core().run(script);
+        }
     });
 
     xwayland_handle = wlr_xwayland_create(wf::get_core().display,