window: Move widget focus handler to the widget

clients/desktop-shell.c

@@ -230,10 +230,9 @@ panel_redraw_handler(struct window *window, void *data)
 }
 
 static void
-panel_widget_focus_handler(struct window *window,
+panel_widget_focus_handler(struct widget *widget, void *data)
-			   struct widget *focus, void *data)
 {
-	window_schedule_redraw(window);
+	widget_schedule_redraw(widget);
 }
 
 static void
@@ -285,7 +284,6 @@ panel_create(struct display *display)
 	window_set_custom(panel->window);
 	window_set_user_data(panel->window, panel);
 	window_set_button_handler(panel->window, panel_button_handler);
-	window_set_widget_focus_handler(panel->window, panel_widget_focus_handler);
 
 	return panel;
 }
@@ -300,7 +298,9 @@ panel_add_widget(struct panel *panel, const char *icon, const char *path)
 	widget->icon = cairo_image_surface_create_from_png(icon);
 	widget->path = strdup(path);
 	widget->panel = panel;
-	window_add_widget(panel->window, widget);
+
+	widget->widget = window_add_widget(panel->window, widget);
+	widget_set_focus_handler(widget->widget, panel_widget_focus_handler);
 }
 
 static void
@@ -438,10 +438,9 @@ unlock_dialog_keyboard_focus_handler(struct window *window,
 }
 
 static void
-unlock_dialog_widget_focus_handler(struct window *window,
+unlock_dialog_widget_focus_handler(struct widget *widget, void *data)
-				   struct widget *focus, void *data)
 {
-	window_schedule_redraw(window);
+	widget_schedule_redraw(widget);
 }
 
 static struct unlock_dialog *
@@ -464,9 +463,9 @@ unlock_dialog_create(struct desktop *desktop)
 	window_set_keyboard_focus_handler(dialog->window,
 					  unlock_dialog_keyboard_focus_handler);
 	window_set_button_handler(dialog->window, unlock_dialog_button_handler);
-	window_set_widget_focus_handler(dialog->window,
-				      unlock_dialog_widget_focus_handler);
 	dialog->button = window_add_widget(dialog->window, NULL);
+	widget_set_focus_handler(dialog->button,
+				 unlock_dialog_widget_focus_handler);
 
 	desktop_shell_set_lock_surface(desktop->shell,
 	       window_get_wl_shell_surface(dialog->window));

clients/window.c

@@ -134,7 +134,6 @@ struct window {
 	window_motion_handler_t motion_handler;
 	window_enter_handler_t enter_handler;
 	window_leave_handler_t leave_handler;
-	window_widget_focus_handler_t widget_focus_handler;
 	window_data_handler_t data_handler;
 	window_drop_handler_t drop_handler;
 	window_close_handler_t close_handler;
@@ -150,8 +149,10 @@ struct window {
 };
 
 struct widget {
+	struct window *window;
 	struct wl_list link;
 	struct rectangle allocation;
+	widget_focus_handler_t focus_handler;
 	void *user_data;
 };
 
@@ -1056,6 +1057,7 @@ window_add_widget(struct window *window, void *data)
 
 	widget = malloc(sizeof *widget);
 	memset(widget, 0, sizeof *widget);
+	widget->window = window;
 	widget->user_data = data;
 	wl_list_insert(window->widget_list.prev, &widget->link);
 
@@ -1099,6 +1101,18 @@ widget_get_user_data(struct widget *widget)
 	return widget->user_data;
 }
 
+void
+widget_set_focus_handler(struct widget *widget, widget_focus_handler_t handler)
+{
+	widget->focus_handler = handler;
+}
+
+void
+widget_schedule_redraw(struct widget *widget)
+{
+	window_schedule_redraw(widget->window);
+}
+
 void
 window_draw(struct window *window)
 {
@@ -1232,8 +1246,8 @@ window_set_focus_widget(struct window *window, struct widget *focus)
 
 	window->focus_widget = focus;
 	data = focus ? focus->user_data : NULL;
-	if (window->widget_focus_handler)
+	if (focus && focus->focus_handler)
-		window->widget_focus_handler(window, focus, data);
+		focus->focus_handler(focus, data);
 }
 
 static void
@@ -2038,13 +2052,6 @@ window_set_keyboard_focus_handler(struct window *window,
 	window->keyboard_focus_handler = handler;
 }
 
-void
-window_set_widget_focus_handler(struct window *window,
-				window_widget_focus_handler_t handler)
-{
-	window->widget_focus_handler = handler;
-}
-
 void
 window_set_data_handler(struct window *window, window_data_handler_t handler)
 {

clients/window.h

@@ -194,8 +194,7 @@ typedef void (*window_drop_handler_t)(struct window *window,
 				      struct input *input,
 				      int32_t x, int32_t y, void *data);
 
-typedef void (*window_widget_focus_handler_t)(struct window *window,
+typedef void (*widget_focus_handler_t)(struct widget *widget, void *data);
-					      struct widget *focus, void *data);
 
 typedef void (*window_close_handler_t)(struct window *window, void *data);
 
@@ -334,10 +333,6 @@ void
 window_set_keyboard_focus_handler(struct window *window,
 				  window_keyboard_focus_handler_t handler);
 
-void
-window_set_widget_focus_handler(struct window *window,
-				window_widget_focus_handler_t handler);
-
 void
 window_set_data_handler(struct window *window,
 			window_data_handler_t handler);
@@ -366,6 +361,13 @@ widget_set_allocation(struct widget *widget,
 void *
 widget_get_user_data(struct widget *widget);
 
+void
+widget_set_focus_handler(struct widget *widget,
+			 widget_focus_handler_t handler);
+
+void
+widget_schedule_redraw(struct widget *widget);
+
 void
 input_set_pointer_image(struct input *input, uint32_t time, int pointer);