core: change apprt action to enum value instead of a new one

src/Surface.zig

@@ -5183,13 +5183,13 @@ pub fn performBindingAction(self: *Surface, action: input.Binding.Action) !bool
         .prompt_surface_title => return try self.rt_app.performAction(
             .{ .surface = self },
             .prompt_title,
-            {},
+            .surface,
         ),
 
         .prompt_tab_title => return try self.rt_app.performAction(
             .{ .surface = self },
-            .prompt_tab_title,
-            {},
+            .prompt_title,
+            .tab,
         ),
 
         .clear_screen => {

src/apprt/action.zig

@@ -189,13 +189,9 @@ pub const Action = union(Key) {
     set_title: SetTitle,
 
     /// Set the title of the target to a prompted value. It is up to
-    /// the apprt to prompt.
-    prompt_title,
-
-    /// Set the title of the current tab/window to a prompted value. The title
-    /// set via this prompt overrides any title set by the terminal and persists
-    /// across focus changes within the tab. It is up to the apprt to prompt.
-    prompt_tab_title,
+    /// the apprt to prompt. The value specifies whether to prompt for the
+    /// surface title or the tab title.
+    prompt_title: PromptTitle,
 
     /// The current working directory has changed for the target terminal.
     pwd: Pwd,
@@ -352,7 +348,6 @@ pub const Action = union(Key) {
         desktop_notification,
         set_title,
         prompt_title,
-        prompt_tab_title,
         pwd,
         mouse_shape,
         mouse_visibility,
@@ -542,6 +537,12 @@ pub const MouseVisibility = enum(c_int) {
     hidden,
 };
 
+/// Whether to prompt for the surface title or tab title.
+pub const PromptTitle = enum(c_int) {
+    surface,
+    tab,
+};
+
 pub const MouseOverLink = struct {
     url: [:0]const u8,
 

src/apprt/gtk/class/application.zig

@@ -693,7 +693,7 @@ pub const Application = extern struct {
 
             .progress_report => return Action.progressReport(target, value),
 
-            .prompt_title => return Action.promptTitle(target),
+            .prompt_title => return Action.promptTitle(target, value),
 
             .quit => self.quit(),
 
@@ -2250,12 +2250,18 @@ const Action = struct {
         };
     }
 
-    pub fn promptTitle(target: apprt.Target) bool {
-        switch (target) {
-            .app => return false,
-            .surface => |v| {
-                v.rt_surface.surface.promptTitle();
-                return true;
+    pub fn promptTitle(target: apprt.Target, value: apprt.action.PromptTitle) bool {
+        switch (value) {
+            .surface => switch (target) {
+                .app => return false,
+                .surface => |v| {
+                    v.rt_surface.surface.promptTitle();
+                    return true;
+                },
+            },
+            .tab => {
+                // GTK does not yet support tab title prompting
+                return false;
             },
         }
     }