From 52668d11f90a25c917d29353bf3a2dab2fa13bc4 Mon Sep 17 00:00:00 2001
From: Federico Angelilli <code@fedang.net>
Date: Sun, 26 Nov 2023 22:56:12 +0100
Subject: Add menu button that dynamically changes group items

TODO: Make the creation of such menus less cumbersome and do some more testing
---
 src/comet.c | 48 +++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 41 insertions(+), 7 deletions(-)

diff --git a/src/comet.c b/src/comet.c
index ece7c89..6257bf1 100644
--- a/src/comet.c
+++ b/src/comet.c
@@ -196,6 +196,25 @@ static void quit_action(Button *btn)
     g_main_loop_quit(CAST(btn, ButtonSimple)->action_data);
 }
 
+static void menu_action(Button *btn)
+{
+    struct {
+        ButtonGroup *group;
+        GList *toggled;
+        State *state;
+    } *menu_ctx = CAST(btn, ButtonSimple)->action_data;
+
+    // Otherwise the menu can't be closed
+    g_assert(menu_ctx->group->children->data == btn);
+
+    GList *temp = menu_ctx->group->children;
+    menu_ctx->group->children = menu_ctx->toggled;
+    menu_ctx->toggled = temp;
+
+    log_debug("Toggled menu");
+    state_redraw(menu_ctx->state, true);
+}
+
 static void register_buttons(State *state, Color color, Color line_color, Color text_color)
 {
     // Tags button
@@ -309,22 +328,35 @@ int main(int argc, char **argv)
 
     Button *child1 = button_simple_create(PANGO_ALIGN_CENTER, color, line_color);
     button_set_padding(child1, 1);
-    button_simple_set_text(child1, "Open", text_color);
+    button_simple_set_text(child1, "C1", text_color);
     button_simple_set_action(child1, show_action, NULL);
 
     Button *child2 = button_simple_create(PANGO_ALIGN_CENTER, color, line_color);
     button_set_padding(child2, 1);
-    button_simple_set_text(child2, "Firefox", text_color);
+    button_simple_set_text(child2, "C2", text_color);
     button_simple_set_action(child2, show_action, NULL);
 
     Button *child3 = button_simple_create(PANGO_ALIGN_CENTER, color, line_color);
-    button_set_padding(child3, 0);
-    button_simple_set_text(child3, "Alacritty", text_color);
+    button_set_padding(child3, 1);
+    button_simple_set_text(child3, "C3", text_color);
     button_simple_set_action(child3, show_action, NULL);
 
-    button_group_append(group, child1);
-    button_group_append(group, child2);
-    button_group_append(group, child3);
+    struct {
+        ButtonGroup *group;
+        GList *toggled;
+        State *state;
+    } menu_ctx = { (gpointer)group, NULL, state };
+
+    Button *menu = button_simple_create(PANGO_ALIGN_CENTER, color, line_color);
+    button_simple_set_text(menu, "Open", text_color);
+    button_simple_set_action(menu, menu_action, &menu_ctx);
+
+    menu_ctx.toggled = g_list_append(menu_ctx.toggled, menu);
+    menu_ctx.toggled = g_list_append(menu_ctx.toggled, child1);
+    menu_ctx.toggled = g_list_append(menu_ctx.toggled, child2);
+    menu_ctx.toggled = g_list_append(menu_ctx.toggled, child3);
+
+    button_group_append(group, menu);
     state_add_button(state, group);
 
     connect_attach_state(con, state);
@@ -347,7 +379,9 @@ int main(int argc, char **argv)
     g_source_remove(source_int);
 
     timer_delete(date_ctx.timer);
+    g_list_free(menu_ctx.toggled);
 
+    // Buttons are freed by state_destroy
     state_destroy(state);
     draw_destroy(draw);
     window_destroy(win);
-- 
cgit v1.2.3