sway: Add non-desktop-output type

Currently, when encountering a non-desktop display, sway offers the
output for leasing and returns without storing it in a sway specific
output type like `struct sway_output`.  Additionally, running
`swaymsg -t get_outputs` doesn't show non-desktop outputs.

This commit stores the non-desktop outputs into a struct called
`sway_output_non_desktop`, and adds them to a list on `sway_root`

2 files changed, 29 insertions, 0 deletions

diff --git a/sway/tree/output.c b/sway/tree/output.c
index 52826c91..b30e646e 100644
--- a/sway/tree/output.c
+++ b/sway/tree/output.c
@@ -9,6 +9,7 @@
 #include "sway/output.h"
 #include "sway/tree/arrange.h"
 #include "sway/tree/workspace.h"
+#include "sway/server.h"
 #include "log.h"
 #include "util.h"
 
@@ -390,6 +391,33 @@ void output_get_box(struct sway_output *output, struct wlr_box *box) {
 	box->height = output->height;
 }
 
+static void handle_destroy_non_desktop(struct wl_listener *listener, void *data) {
+	struct sway_output_non_desktop *output =
+		wl_container_of(listener, output, destroy);
+
+	sway_log(SWAY_DEBUG, "Destroying non-desktop output '%s'", output->wlr_output->name);
+
+	int index = list_find(root->non_desktop_outputs, output);
+	list_del(root->non_desktop_outputs, index);
+
+	wl_list_remove(&output->destroy.link);
+
+	free(output);
+}
+
+struct sway_output_non_desktop *output_non_desktop_create(
+		struct wlr_output *wlr_output) {
+	struct sway_output_non_desktop *output =
+		calloc(1, sizeof(struct sway_output_non_desktop));
+
+	output->wlr_output = wlr_output;
+
+	wl_signal_add(&wlr_output->events.destroy, &output->destroy);
+	output->destroy.notify = handle_destroy_non_desktop;
+
+	return output;
+}
+
 enum sway_container_layout output_get_default_layout(
 		struct sway_output *output) {
 	if (config->default_orientation != L_NONE) {
diff --git a/sway/tree/root.c b/sway/tree/root.c
index 8508e9eb..7df0b237 100644
--- a/sway/tree/root.c
+++ b/sway/tree/root.c
@@ -38,6 +38,7 @@ struct sway_root *root_create(void) {
 	wl_list_init(&root->drag_icons);
 	wl_signal_init(&root->events.new_node);
 	root->outputs = create_list();
+	root->non_desktop_outputs = create_list();
 	root->scratchpad = create_list();
 
 	root->output_layout_change.notify = output_layout_handle_change;