westoy: Remove unused support for window parents

It seems that this was only used by the popup menu infrastructure,
which can handle this all on its own. Implementing e.g. transients
in the future can be done with a simple xdg_shell_set_transient_for.

clients/image.c

@@ -336,7 +336,7 @@ fullscreen_handler(struct window *window, void *data)
 }
 
 static void
-close_handler(struct window *window, void *data)
+close_handler(void *data)
 {
 	struct image *image = data;
 

clients/terminal.c

@@ -2212,7 +2212,7 @@ fullscreen_handler(struct window *window, void *data)
 }
 
 static void
-close_handler(struct window *window, void *data)
+close_handler(void *data)
 {
 	struct terminal *terminal = data;
 

clients/view.c

@@ -168,7 +168,7 @@ fullscreen_handler(struct window *window, void *data)
 }
 
 static void
-close_handler(struct window *window, void *data)
+close_handler(void *data)
 {
 	struct view *view = data;
 

clients/window.c

@@ -221,7 +221,6 @@ struct surface {
 
 struct window {
 	struct display *display;
-	struct window *parent;
 	struct wl_list window_output_list;
 	char *title;
 	struct rectangle saved_allocation;
@@ -358,6 +357,7 @@ struct window_frame {
 
 struct menu {
 	struct window *window;
+	struct window *parent;
 	struct widget *widget;
 	struct input *input;
 	struct frame *frame;
@@ -2274,8 +2274,7 @@ frame_menu_func(struct window *window,
 	switch (index) {
 	case 0: /* close */
 		if (window->close_handler)
-			window->close_handler(window->parent,
-					      window->user_data);
+			window->close_handler(window->user_data);
 		else
 			display_exit(window->display);
 		break;
@@ -2392,8 +2391,7 @@ frame_handle_status(struct window_frame *frame, struct input *input,
 
 	if (status & FRAME_STATUS_CLOSE) {
 		if (window->close_handler)
-			window->close_handler(window->parent,
-					      window->user_data);
+			window->close_handler(window->user_data);
 		else
 			display_exit(window->display);
 		return;
@@ -2894,8 +2892,7 @@ keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
 		   input->modifiers == MOD_ALT_MASK &&
 		   state == WL_KEYBOARD_KEY_STATE_PRESSED) {
 		if (window->close_handler)
-			window->close_handler(window->parent,
-					      window->user_data);
+			window->close_handler(window->user_data);
 		else
 			display_exit(window->display);
 	} else if (window->key_handler) {
@@ -4230,8 +4227,7 @@ surface_create(struct window *window)
 }
 
 static struct window *
-window_create_internal(struct display *display,
-		       struct window *parent, int type)
+window_create_internal(struct display *display, int type)
 {
 	struct window *window;
 	struct surface *surface;
@@ -4239,7 +4235,6 @@ window_create_internal(struct display *display,
 	window = xzalloc(sizeof *window);
 	wl_list_init(&window->subsurface_list);
 	window->display = display;
-	window->parent = parent;
 
 	surface = surface_create(window);
 	window->main_surface = surface;
@@ -4283,13 +4278,13 @@ window_create_internal(struct display *display,
 struct window *
 window_create(struct display *display)
 {
-	return window_create_internal(display, NULL, TYPE_NONE);
+	return window_create_internal(display, TYPE_NONE);
 }
 
 struct window *
 window_create_custom(struct display *display)
 {
-	return window_create_internal(display, NULL, TYPE_CUSTOM);
+	return window_create_internal(display, TYPE_CUSTOM);
 }
 
 struct window *
@@ -4298,8 +4293,7 @@ window_create_transient(struct display *display, struct window *parent,
 {
 	struct window *window;
 
-	window = window_create_internal(parent->display,
-					parent, TYPE_TRANSIENT);
+	window = window_create_internal(parent->display, TYPE_TRANSIENT);
 
 	window->x = x;
 	window->y = y;
@@ -4307,7 +4301,7 @@ window_create_transient(struct display *display, struct window *parent,
 	if (display->shell)
 		wl_shell_surface_set_transient(
 			window->shell_surface,
-			window->parent->main_surface->surface,
+			parent->main_surface->surface,
 			window->x, window->y, flags);
 
 	return window;
@@ -4374,8 +4368,8 @@ menu_button_handler(struct widget *widget,
 	    (menu->release_count > 0 || time - menu->time > 500)) {
 		/* Either relase after press-drag-release or
 		 * click-motion-click. */
-		menu->func(menu->window->parent, input,
-			   menu->current, menu->window->parent->user_data);
+		menu->func(menu->parent, input,
+			   menu->current, menu->parent->user_data);
 		input_ungrab(input);
 		menu_destroy(menu);
 	} else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
@@ -4437,13 +4431,14 @@ window_show_menu(struct display *display,
 	if (!menu)
 		return;
 
-	window = window_create_internal(parent->display, parent, TYPE_MENU);
+	window = window_create_internal(parent->display, TYPE_MENU);
 	if (!window) {
 		free(menu);
 		return;
 	}
 
 	menu->window = window;
+	menu->parent = parent;
 	menu->widget = window_add_widget(menu->window, menu);
 	window_set_buffer_scale (menu->window, window_get_buffer_scale (parent));
 	window_set_buffer_transform (menu->window, window_get_buffer_transform (parent));
@@ -4477,7 +4472,7 @@ window_show_menu(struct display *display,
 	frame_interior(menu->frame, &ix, &iy, NULL, NULL);
 	wl_shell_surface_set_popup(window->shell_surface, input->seat,
 				   display_get_serial(window->display),
-				   window->parent->main_surface->surface,
+				   parent->main_surface->surface,
 				   window->x - ix, window->y - iy, 0);
 }
 

clients/window.h

@@ -214,7 +214,7 @@ typedef void (*window_drop_handler_t)(struct window *window,
 				      struct input *input,
 				      int32_t x, int32_t y, void *data);
 
-typedef void (*window_close_handler_t)(struct window *window, void *data);
+typedef void (*window_close_handler_t)(void *data);
 typedef void (*window_fullscreen_handler_t)(struct window *window, void *data);
 
 typedef void (*window_output_handler_t)(struct window *window, struct output *output,