web: reimplement menus as a stack with more shared code

1 files changed, 214 insertions, 144 deletions

diff --git a/web/web_prompt.c b/web/web_prompt.c
index f65259e..1e2e1a1 100644
--- a/web/web_prompt.c
+++ b/web/web_prompt.c
@@ -18,15 +18,21 @@ enum prompt_mode {
 	PM_VISIT,
 	PM_NUM_DARTS,
 	PM_END_MATCH,
-	PM_SELECT_MODE,
-	PM_MATCH_OPTS,
-	PM_MATCH_OPT_START_PTS,
-	PM_MATCH_OPT_THROWS_FIRST
+	PM_MENU
 };
 enum prompt_mode pm;
 
+enum menu {
+	MENU_MAIN,
+	MENU_MATCH_OPTS,
+	MENU_START_PTS,
+	MENU_THROWS_FIRST
+};
+static enum menu menu_stack[10];
+static int menu_depth = 0;
 static char *list_optv[10];
 static int list_optc;
+static bool list_back;
 
 static struct {
 	bufstr msgl, msgr, input;
@@ -74,11 +80,28 @@ void prompt_flush()
 		dom_set_content("#prompt-input", bufstr_flush(&bufs.input));
 }
 
+void set_prompt_mode(enum prompt_mode mode)
+{
+	pm = mode;
+
+	if (pm != PM_DARTBOARD)
+		dom_add_class("#prompt", "active");
+	else
+		dom_remove_class("#prompt", "active");
+
+	dom_set_uniq_class(
+		pm == PM_DARTBOARD ? "#keypad-dartboard" :
+			pm == PM_MENU ? "#keypad-list" :
+			"#keypad-default",
+		"visible", ".keypad");
+}
+
 static void clear_list_opts()
 {
 	for (int i = 0; i < list_optc; ++i)
 		free(list_optv[i]);
 	list_optc = 0;
+	list_back = false;
 }
 
 static void add_list_opt(char *str)
@@ -119,97 +142,23 @@ static void flush_list_opts()
 	free(elemv);
 }
 
-void set_prompt_mode(enum prompt_mode mode)
-{
-	pm = mode;
-
-	if (pm != PM_DARTBOARD)
-		dom_add_class("#prompt", "active");
-	else
-		dom_remove_class("#prompt", "active");
-
-	dom_set_uniq_class(
-		pm == PM_DARTBOARD ? "#keypad-dartboard" :
-			pm == PM_SELECT_MODE ? "#keypad-list" :
-			pm == PM_MATCH_OPTS ? "#keypad-list" :
-			pm == PM_MATCH_OPT_START_PTS ? "#keypad-list" :
-			pm == PM_MATCH_OPT_THROWS_FIRST ? "#keypad-list" :
-			"#keypad-default",
-		"visible", ".keypad");
-}
-
-void prompt_user_visit()
+void menu_display_main()
 {
-	set_prompt_mode(PM_VISIT);
-	prompt_set_msgl("Enter points:");
-	prompt_set_msgr(NULL);
-
-	dom_set_content("#key-submit", "OK");
-	dom_set_content("#key-rem", "REMAINING");
-}
-
-void prompt_comp_visit()
-{
-	set_prompt_mode(PM_DARTBOARD);
-
-	char buf[64];
-	sprintf(buf, "%s is throwing…", state_active_leg()->name);
-	prompt_set_msgl(buf);
-	prompt_set_msgr(NULL);
-}
-
-void prompt_num_darts()
-{
-	set_prompt_mode(PM_NUM_DARTS);
-	prompt_set_msgl("Darts needed?");
-	prompt_set_msgr(NULL);
-	dom_set_content("#key-submit", "OK");
-	dom_set_content("#key-rem", "REMAINING");
-}
-
-void prompt_end_match()
-{
-	scoreboard_set_player_active(0);
-
-	char buf[64];
-	sprintf(buf, "%s wins.",
-		state->legs[match_winning_player() - 1]->name);
-
-	set_prompt_mode(PM_END_MATCH);
-	prompt_set_msgl(buf);
-	prompt_set_msgr(NULL);
-
-	dom_set_content("#key-submit", "END MATCH");
-	dom_set_content("#key-rem", "REMATCH");
-}
-
-void prompt_select_mode()
-{
-	scoreboard_hide_info();
-	dom_set_content("#visits", NULL);
-
-	set_prompt_mode(PM_SELECT_MODE);
 	prompt_set_msgl("Select match mode:");
-	prompt_set_msgr(NULL);
 
-	clear_list_opts();
 	add_list_opt("Play against computer");
 	add_list_opt("One-player scoreboard");
 	add_list_opt("Two-player scoreboard");
 	add_list_opt("Computer vs computer");
 	add_list_opt("Three-player scoreboard");
 	add_list_opt("Play against three computers");
-	flush_list_opts();
 }
 
-void prompt_match_opts()
+void menu_display_match_opts()
 {
-	set_prompt_mode(PM_MATCH_OPTS);
 	prompt_set_msgl("Match options:");
-	prompt_set_msgr(NULL);
 
 	char buf[64];
-	clear_list_opts();
 	add_list_opt("Start match");
 	sprintf(buf, "Starting points: %d", match_opts->start_pts);
 	add_list_opt(buf);
@@ -218,35 +167,128 @@ void prompt_match_opts()
 			match_opts->p1_name :
 			match_opts->p2_name);
 	add_list_opt(buf);
-	add_list_opt("Back");
-	flush_list_opts();
+
+	list_back = true;
 }
 
-void prompt_match_opt_start_pts()
+void menu_display_start_pts()
 {
-	set_prompt_mode(PM_MATCH_OPT_START_PTS);
 	prompt_set_msgl("Starting points:");
-	prompt_set_msgr(NULL);
-	prompt_flush();
 
-	clear_list_opts();
 	add_list_opt("301");
 	add_list_opt("501");
 	add_list_opt("701");
 	add_list_opt("901");
-	add_list_opt("Back");
+
+	list_back = true;
+}
+
+void menu_display_throws_first()
+{
+	prompt_set_msgl("Throws first:");
+
+	add_list_opt(match_opts->p1_name);
+	if (match_opts->p2_name)
+		add_list_opt(match_opts->p2_name);
+
+	list_back = true;
+}
+
+void menu_display()
+{
+	if (pm != PM_MENU)
+		set_prompt_mode(PM_MENU);
+
+	prompt_set_msgl(NULL);
+	prompt_set_msgr(NULL);
+	clear_list_opts();
+
+	switch (menu_stack[menu_depth]) {
+	case MENU_MAIN:
+		menu_display_main();
+		break;
+	case MENU_MATCH_OPTS:
+		menu_display_match_opts();
+		break;
+	case MENU_START_PTS:
+		menu_display_start_pts();
+		break;
+	case MENU_THROWS_FIRST:
+		menu_display_throws_first();
+		break;
+	}
+
+	if (list_back)
+		add_list_opt("Back");
+
 	flush_list_opts();
+	prompt_flush();
 }
 
-static void match_opt_start_pts_submit(int val)
+static void menu_pop()
 {
-	if (val < 1 || val > list_optc) {
+	--menu_depth;
+	menu_display();
+}
+
+static void menu_push(enum menu m)
+{
+	menu_stack[++menu_depth] = m;
+	menu_display();
+}
+
+void menu_submit_main(int mode)
+{
+	if (mode < M_FIRST || mode > M_LAST) {
 		oi();
 		return;
-	} else if (val == list_optc) {
-		goto prompt_next;
 	}
 
+	if (match_opts) match_opts_free();
+	match_opts = calloc(1, sizeof(*match_opts));
+	match_opts->mode = mode;
+	match_opts->start_pts = 501;
+	match_opts->throws_first = 1;
+	// names need to be freed if we stop using string literals
+	if (mode == M_PVC) {
+		match_opts->p1_name = "User";
+		match_opts->p2_name = "Computer";
+		match_opts->p2_type = PT_COMP;
+	} else if (mode == M_P) {
+		match_opts->p1_name = "Player 1";
+		match_opts->p2_name = NULL;
+	} else if (mode == M_PVP) {
+		match_opts->p1_name = "Player 1";
+		match_opts->p2_name = "Player 2";
+	} else if (mode == M_CVC) {
+		match_opts->p1_name = "Computer 1";
+		match_opts->p1_type = PT_COMP;
+		match_opts->p2_name = "Computer 2";
+		match_opts->p2_type = PT_COMP;
+	} else if (mode == M_PVPVP) {
+		match_opts->p1_name = "Player 1";
+		match_opts->p2_name = "Player 2";
+	} else if (mode == M_PVCVCVC) {
+		match_opts->p1_name = "User";
+		match_opts->p2_type = PT_COMP;
+		match_opts->p2_name = "Computer 1";
+	}
+
+	menu_push(MENU_MATCH_OPTS);
+}
+
+static void menu_submit_match_opts(int val)
+{
+	if (val == 1)
+		start_match();
+	else if (val == 2)
+		menu_push(MENU_START_PTS);
+	else if (val == 3)
+		menu_push(MENU_THROWS_FIRST);
+}
+
+static void menu_submit_start_pts(int val)
+{
 	if (val == 1)
 		match_opts->start_pts = 301;
 	else if (val == 2)
@@ -256,58 +298,98 @@ static void match_opt_start_pts_submit(int val)
 	else if (val == 4)
 		match_opts->start_pts = 901;
 
-prompt_next:
-	prompt_match_opts();
-	prompt_flush();
+	menu_pop();
 }
 
-void prompt_match_opt_throws_first()
+static void menu_submit_throws_first(int val)
 {
-	set_prompt_mode(PM_MATCH_OPT_THROWS_FIRST);
-	prompt_set_msgl("Throws first:");
-	prompt_set_msgr(NULL);
-	prompt_flush();
+	match_opts->throws_first = val;
 
-	clear_list_opts();
-	add_list_opt(match_opts->p1_name);
-	if (match_opts->p2_name)
-		add_list_opt(match_opts->p2_name);
-	add_list_opt("Back");
-	flush_list_opts();
+	menu_pop();
 }
 
-static void match_opt_throws_first_submit(int val)
+static void menu_submit(int opt)
 {
-	if (val < 1 || val > list_optc) {
+	if (opt < 1 || opt > list_optc) {
 		oi();
 		return;
-	} else if (val == list_optc) {
-		goto prompt_next;
 	}
 
-	match_opts->throws_first = val;
+	if (list_back && opt == list_optc) {
+		menu_pop();
+		return;
+	}
 
-prompt_next:
-	prompt_match_opts();
-	prompt_flush();
+	switch (menu_stack[menu_depth]) {
+	case MENU_MAIN:
+		menu_submit_main(opt);
+		break;
+	case MENU_MATCH_OPTS:
+		menu_submit_match_opts(opt);
+		break;
+	case MENU_START_PTS:
+		menu_submit_start_pts(opt);
+		break;
+	case MENU_THROWS_FIRST:
+		menu_submit_throws_first(opt);
+		break;
+	}
 }
 
-static void match_opts_submit(int val)
+void prompt_main_menu()
 {
-	if (val < 1 || val > list_optc) {
-		oi();
-		return;
-	} else if (val == list_optc) {
-		prompt_select_mode();
-		prompt_flush();
-	}
+	scoreboard_hide_info();
+	dom_set_content("#visits", NULL);
 
-	if (val == 1)
-		start_match();
-	else if (val == 2)
-		prompt_match_opt_start_pts();
-	else if (val == 3)
-		prompt_match_opt_throws_first();
+	menu_depth = 0;
+	menu_stack[0] = MENU_MAIN;
+
+	menu_display();
+}
+
+void prompt_user_visit()
+{
+	set_prompt_mode(PM_VISIT);
+	prompt_set_msgl("Enter points:");
+	prompt_set_msgr(NULL);
+
+	dom_set_content("#key-submit", "OK");
+	dom_set_content("#key-rem", "REMAINING");
+}
+
+void prompt_comp_visit()
+{
+	set_prompt_mode(PM_DARTBOARD);
+
+	char buf[64];
+	sprintf(buf, "%s is throwing…", state_active_leg()->name);
+	prompt_set_msgl(buf);
+	prompt_set_msgr(NULL);
+}
+
+void prompt_num_darts()
+{
+	set_prompt_mode(PM_NUM_DARTS);
+	prompt_set_msgl("Darts needed?");
+	prompt_set_msgr(NULL);
+	dom_set_content("#key-submit", "OK");
+	dom_set_content("#key-rem", "REMAINING");
+}
+
+void prompt_end_match()
+{
+	scoreboard_set_player_active(0);
+
+	char buf[64];
+	sprintf(buf, "%s wins.",
+		state->legs[match_winning_player() - 1]->name);
+
+	set_prompt_mode(PM_END_MATCH);
+	prompt_set_msgl(buf);
+	prompt_set_msgr(NULL);
+
+	dom_set_content("#key-submit", "END MATCH");
+	dom_set_content("#key-rem", "REMATCH");
 }
 
 bool key_is_active(char *k)
@@ -371,10 +453,7 @@ void prompt_handle_on_change()
 
 void prompt_handle_append(char *data)
 {
-	if (pm != PM_MATCH_OPTS &&
-		pm != PM_MATCH_OPT_START_PTS &&
-		pm != PM_MATCH_OPT_THROWS_FIRST &&
-		pm != PM_SELECT_MODE &&
+	if (pm != PM_MENU &&
 		pm != PM_VISIT &&
 		pm != PM_NUM_DARTS)
 		return;
@@ -426,10 +505,7 @@ void prompt_handle_submit()
 
 	if (pm != PM_VISIT &&
 		pm != PM_NUM_DARTS &&
-		pm != PM_SELECT_MODE &&
-		pm != PM_MATCH_OPTS &&
-		pm != PM_MATCH_OPT_START_PTS &&
-		pm != PM_MATCH_OPT_THROWS_FIRST)
+		pm != PM_MENU)
 		return;
 
 	char *str = prompt_get();
@@ -439,14 +515,8 @@ void prompt_handle_submit()
 			user_visit(atoi(str));
 		else if (pm == PM_NUM_DARTS)
 			user_num_darts(atoi(str));
-		else if (pm == PM_SELECT_MODE)
-			match_mode_selected(atoi(str));
-		else if (pm == PM_MATCH_OPTS)
-			match_opts_submit(atoi(str));
-		else if (pm == PM_MATCH_OPT_START_PTS)
-			match_opt_start_pts_submit(atoi(str));
-		else if (pm == PM_MATCH_OPT_THROWS_FIRST)
-			match_opt_throws_first_submit(atoi(str));
+		else if (pm == PM_MENU)
+			menu_submit(atoi(str));
 	}
 
 	free(str);