Add a window to show long receivers list

init.lua

@@ -75,6 +75,7 @@ dofile(MP .. "/ui/outbox.lua")
 dofile(MP .. "/ui/drafts.lua")
 dofile(MP .. "/ui/trash.lua")
 dofile(MP .. "/ui/message.lua")
+dofile(MP .. "/ui/receivers.lua")
 dofile(MP .. "/ui/events.lua")
 dofile(MP .. "/ui/contacts.lua")
 dofile(MP .. "/ui/edit_contact.lua")

ui/message.lua

@@ -17,6 +17,7 @@ function mail.show_message(name, id)
 			label[0.2,0.5;]] .. S("To") .. [[: %s]
 			label[0.2,0.9;]] .. S("CC") .. [[: %s]
 			label[0.2,1.3;]] .. S("Date") .. [[: %s]
+			button[5.1,1;2,1;receivers;]] .. S("Receivers") .. [[]
 
 			label[0,2.1;]] .. S("Subject") .. [[: %s]
 			textarea[0.25,2.6;8,7.0;;;%s]
@@ -29,7 +30,9 @@ function mail.show_message(name, id)
 
 	local from = minetest.formspec_escape(message.from) or ""
 	local to = minetest.formspec_escape(message.to) or ""
+	if string.len(to) > 70 then to = string.sub(to, 1, 67) .. "..." end
 	local cc = minetest.formspec_escape(message.cc) or ""
+	if string.len(cc) > 50 then cc = string.sub(cc, 1, 47) .. "..." end
 	local date = type(message.time) == "number"
 		and minetest.formspec_escape(os.date("%Y-%m-%d %X", message.time)) or ""
 	local subject = minetest.formspec_escape(message.subject) or ""
@@ -134,6 +137,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 			mail.delete_mail(name, message.id, true)
 		end
 		mail.show_mail_menu(name)
+
+	elseif fields.receivers then
+		mail.show_receivers(name, message.id)
 	end
 
 	return true

ui/receivers.lua

@@ -0,0 +1,62 @@
+-- translation
+local S = minetest.get_translator("mail")
+
+local FORMNAME = "mail:receivers"
+
+function mail.show_receivers(name, id)
+	local message = mail.get_message(name, id)
+
+	local formspec = [[
+			size[8,6]
+
+			box[0,0;7,1.1;]] .. mail.colors.highlighted .. [[]
+
+			button[7.25,0.15;0.75,0.5;back;X]
+
+			label[0.2,0.1;]] .. S("From") .. [[: %s]
+			label[0.2,0.5;]] .. S("Date") .. [[: %s]
+
+			tablecolumns[color;text]
+			table[0,1.5;3.8,4.5;to;%s]
+
+			tablecolumns[color;text]
+			table[4,1.5;3.8,4.5;cc;%s]
+		]] .. mail.theme
+
+	local from = minetest.formspec_escape(message.from) or ""
+	local to = mail.parse_player_list(message.to or "")
+	local to_str = mail.colors.header .. "," .. S("To") .. ",,"
+	to_str = to_str .. table.concat(to, ",,")
+	local cc = mail.parse_player_list(message.cc or "")
+	local cc_str = mail.colors.header .. "," .. S("CC") .. ",,"
+	cc_str = cc_str .. table.concat(cc, ",,")
+	local date = type(message.time) == "number"
+		and minetest.formspec_escape(os.date("%Y-%m-%d %X", message.time)) or ""
+	formspec = string.format(formspec, from, date, to_str, cc_str)
+
+	minetest.show_formspec(name, FORMNAME, formspec)
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= FORMNAME then
+		return
+	end
+
+	local name = player:get_player_name()
+    local entry = mail.get_storage_entry(name)
+
+	local message_id = ""
+	if mail.selected_idxs.inbox[name] and mail.selected_idxs.boxtab[name] == 1 then
+		message_id = mail.selected_idxs.inbox[name][#mail.selected_idxs.inbox[name]]
+	elseif mail.selected_idxs.outbox[name] and mail.selected_idxs.boxtab[name] == 2 then
+		message_id = mail.selected_idxs.outbox[name][#mail.selected_idxs.outbox[name]]
+	elseif mail.selected_idxs.trash[name] and mail.selected_idxs.boxtab[name] == 4 then
+		message_id = entry.trash[mail.selected_idxs.trash[name]].id
+	end
+
+	if fields.back then
+		mail.show_message(name, message_id)
+	end
+
+	return true
+end)