core/gtk: open urls using an apprt action instead of doing it directly

Partial implementation of #5256

This implements the core changes necessary to open urls using an apprt
action rather than doing it directly from the core.

Implements the open_url action in the GTK and GLFW apprts.

Note that this should not be merged until a macOS-savvy developer can add
an implementation of the open_url action for the macOS apprt.

1 files changed, 16 insertions, 1 deletions

diff --git a/include/ghostty.h b/include/ghostty.h
index 73c708c6b..16ca21d89 100644
--- a/include/ghostty.h
+++ b/include/ghostty.h
@@ -662,6 +662,19 @@ typedef struct {
   bool soft;
 } ghostty_action_reload_config_s;
 
+// apprt.action.OpenUrlKind
+typedef enum {
+  GHOSTTY_ACTION_OPEN_URL_KIND_TEXT,
+  GHOSTTY_ACTION_OPEN_URL_KIND_UNKNOWN,
+} ghostty_action_open_url_kind_e;
+
+// apprt.action.OpenUrl.C
+typedef struct {
+  ghostty_action_open_url_kind_e kind;
+  const char* url;
+  uintptr_t len;
+} ghostty_action_open_url_s;
+
 // apprt.Action.Key
 typedef enum {
   GHOSTTY_ACTION_QUIT,
@@ -711,7 +724,8 @@ typedef enum {
   GHOSTTY_ACTION_RING_BELL,
   GHOSTTY_ACTION_UNDO,
   GHOSTTY_ACTION_REDO,
-  GHOSTTY_ACTION_CHECK_FOR_UPDATES
+  GHOSTTY_ACTION_CHECK_FOR_UPDATES,
+  GHOSTTY_ACTION_OPEN_URL,
 } ghostty_action_tag_e;
 
 typedef union {
@@ -739,6 +753,7 @@ typedef union {
   ghostty_action_color_change_s color_change;
   ghostty_action_reload_config_s reload_config;
   ghostty_action_config_change_s config_change;
+  ghostty_action_open_url_s open_url;
 } ghostty_action_u;
 
 typedef struct {