feat: finish ghostty pane backend integration

1 files changed, 21 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/os/dbus.zig b/vendor/libghostty-vt/src/os/dbus.zig
new file mode 100644
index 00000000..99824db7
--- /dev/null
+++ b/vendor/libghostty-vt/src/os/dbus.zig
@@ -0,0 +1,21 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+/// Returns true if the program was launched by D-Bus activation.
+///
+/// On Linux GTK, this returns true if the program was launched using D-Bus
+/// activation. It will return false if Ghostty was launched any other way.
+///
+/// For other platforms and app runtimes, this returns false.
+pub fn launchedByDbusActivation() bool {
+    return switch (builtin.os.tag) {
+        // On Linux, D-Bus activation sets `DBUS_STARTER_ADDRESS` and
+        // `DBUS_STARTER_BUS_TYPE`. If these environment variables are present
+        // (no matter the value) we were launched by D-Bus activation.
+        .linux => std.posix.getenv("DBUS_STARTER_ADDRESS") != null and
+            std.posix.getenv("DBUS_STARTER_BUS_TYPE") != null,
+
+        // No other system supports D-Bus so always return false.
+        else => false,
+    };
+}