add new-output handler

src/load-script.c

@@ -9,6 +9,7 @@
 #include "seat.h"
 
 #include "river-control-unstable-v1.h"
+#include "call-new-output-handler.h"
 
 /**
  * ISO C forbids casting a function pointer to a void pointer because on some
@@ -77,7 +78,29 @@ static SCM install_handler (SCM key, SCM proc)
 		return SCM_UNSPECIFIED;
 	}
 
-	if ( scm_is_eq(scm_from_utf8_symbol("layout-demand"), key) == 1 )
+	if ( scm_is_eq(scm_from_utf8_symbol("new-output"), key) == 1 )
+	{
+		context.mode = CONTINOUS;
+		context.new_output_handler = proc;
+
+		/* Call handler for all already existing outputs. */
+		struct Output *output;
+		wl_list_for_each(output, &context.outputs, link)
+		{
+			struct Call_new_output_handler_parameters params = {
+				.output = output,
+			};
+
+			void *res = scm_with_guile(call_new_output_handler, (void *)&params);
+			if ( res != NULL )
+			{
+				fputs(res, stderr);
+				fputs("INFO: This error is not fatal.\n", stderr);
+				continue;
+			}
+		}
+	}
+	else if ( scm_is_eq(scm_from_utf8_symbol("layout-demand"), key) == 1 )
 	{
 		if ( context.layout_manager == NULL )
 		{