Add channel and node search feature

Press Ctrl + / while the nodes or channels window is highlighted to
start search

Type text to search as you type, first matching item will be selected,
starting at current selected index

Press Tab to find next match starting from the current index - search
wraps around if necessary

Press Esc or Enter to exit search mode

ui/curses_ui.py

@@ -374,6 +374,50 @@ def draw_packetlog_win():
         packetlog_win.box()
         packetlog_win.refresh()
 
+def search(win):
+    start_idx = globals.selected_node
+    l = globals.node_list
+    select_func = select_node
+
+    if win == 0:
+        start_idx = globals.selected_channel
+        l = globals.channel_list
+        select_func = select_channel
+
+    search_text = ""
+    entry_win.erase()
+
+    while True:
+        draw_centered_text_field(entry_win, f"Search: {search_text}", 0, get_color("input"))
+        char = entry_win.get_wch()
+
+        if char in (chr(27), chr(curses.KEY_ENTER), chr(10), chr(13)):
+            break
+        elif char == "\t":
+            start_idx = globals.selected_node + 1 if win == 2 else globals.selected_channel + 1
+        elif char in (curses.KEY_BACKSPACE, chr(127)):
+            if search_text:
+                search_text = search_text[:-1]
+                y, x = entry_win.getyx()
+                entry_win.move(y, x - 1)
+                entry_win.addch(' ')  #
+                entry_win.move(y, x - 1)
+                entry_win.erase()
+                entry_win.refresh()
+        elif isinstance(char, str):
+            search_text += char
+
+        search_text_caseless = search_text.casefold()
+
+        for i, n in enumerate(l[start_idx:] + l[:start_idx]):
+            if isinstance(n, int) and search_text_caseless in get_name_from_database(n, 'long').casefold() \
+              or isinstance(n, int) and search_text_caseless in get_name_from_database(n, 'short').casefold() \
+              or search_text_caseless in str(n).casefold():
+                select_func((i + start_idx) % len(l))
+                break
+
+    entry_win.erase()
+
 def handle_resize(stdscr, firstrun):
     global messages_pad, messages_box, nodes_pad, nodes_box, channel_pad, channel_box, function_win, packetlog_win, entry_win
 
@@ -671,6 +715,10 @@ def main_ui(stdscr):
                     draw_channel_list()
                     draw_messages_window()
 
+        elif char == chr(31):
+            if(globals.current_window == 2 or globals.current_window == 0):
+                search(globals.current_window)
+
         else:
             # Append typed character to input text
             if(isinstance(char, str)):